Images.cpp revision 8daabceb2efddebe2e7c0b2425ad9f8ef62c0a5c
1282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski// 2282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski// Copyright 2006 The Android Open Source Project 3282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski// 4282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski// Build resource files from raw assets. 5282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski// 6282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 7282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski#define PNG_INTERNAL 8282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 9282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski#include "Images.h" 10282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 11282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski#include <androidfw/ResourceTypes.h> 12282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski#include <utils/ByteOrder.h> 13282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 14282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski#include <png.h> 15282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski#include <zlib.h> 16282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 172412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe// Change this to true for noisy debug output. 182412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampestatic const bool kIsDebug = false; 19282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 20282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinskistatic void 21282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinskipng_write_aapt_file(png_structp png_ptr, png_bytep data, png_size_t length) 22282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski{ 23282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski AaptFile* aaptfile = (AaptFile*) png_get_io_ptr(png_ptr); 24282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski status_t err = aaptfile->writeData(data, length); 25282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (err != NO_ERROR) { 26282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski png_error(png_ptr, "Write Error"); 27282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 28282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski} 29282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 30282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 31282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinskistatic void 322412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampepng_flush_aapt_file(png_structp /* png_ptr */) 33282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski{ 34282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski} 35282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 36282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski// This holds an image as 8bpp RGBA. 37282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinskistruct image_info 38282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski{ 396381dd4ff212a95be30d2b445d40ff419ab076b4Narayan Kamath image_info() : rows(NULL), is9Patch(false), 406381dd4ff212a95be30d2b445d40ff419ab076b4Narayan Kamath xDivs(NULL), yDivs(NULL), colors(NULL), allocRows(NULL) { } 416381dd4ff212a95be30d2b445d40ff419ab076b4Narayan Kamath 42282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski ~image_info() { 43282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (rows && rows != allocRows) { 44282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski free(rows); 45282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 46282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (allocRows) { 47282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski for (int i=0; i<(int)allocHeight; i++) { 48282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski free(allocRows[i]); 49282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 50282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski free(allocRows); 51282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 526381dd4ff212a95be30d2b445d40ff419ab076b4Narayan Kamath free(xDivs); 536381dd4ff212a95be30d2b445d40ff419ab076b4Narayan Kamath free(yDivs); 546381dd4ff212a95be30d2b445d40ff419ab076b4Narayan Kamath free(colors); 556381dd4ff212a95be30d2b445d40ff419ab076b4Narayan Kamath } 566381dd4ff212a95be30d2b445d40ff419ab076b4Narayan Kamath 576381dd4ff212a95be30d2b445d40ff419ab076b4Narayan Kamath void* serialize9patch() { 586381dd4ff212a95be30d2b445d40ff419ab076b4Narayan Kamath void* serialized = Res_png_9patch::serialize(info9Patch, xDivs, yDivs, colors); 596381dd4ff212a95be30d2b445d40ff419ab076b4Narayan Kamath reinterpret_cast<Res_png_9patch*>(serialized)->deviceToFile(); 606381dd4ff212a95be30d2b445d40ff419ab076b4Narayan Kamath return serialized; 61282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 62282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 63282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski png_uint_32 width; 64282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski png_uint_32 height; 65282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski png_bytepp rows; 66282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 67282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // 9-patch info. 68282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski bool is9Patch; 69282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski Res_png_9patch info9Patch; 706381dd4ff212a95be30d2b445d40ff419ab076b4Narayan Kamath int32_t* xDivs; 716381dd4ff212a95be30d2b445d40ff419ab076b4Narayan Kamath int32_t* yDivs; 726381dd4ff212a95be30d2b445d40ff419ab076b4Narayan Kamath uint32_t* colors; 73282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 74282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // Layout padding, if relevant 75282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski bool haveLayoutBounds; 76282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski int32_t layoutBoundsLeft; 77282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski int32_t layoutBoundsTop; 78282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski int32_t layoutBoundsRight; 79282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski int32_t layoutBoundsBottom; 80282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 8147cd8e921db73e894f94ec4729ade90da50996f5Chris Craik // Round rect outline description 8247cd8e921db73e894f94ec4729ade90da50996f5Chris Craik int32_t outlineInsetsLeft; 8347cd8e921db73e894f94ec4729ade90da50996f5Chris Craik int32_t outlineInsetsTop; 8447cd8e921db73e894f94ec4729ade90da50996f5Chris Craik int32_t outlineInsetsRight; 8547cd8e921db73e894f94ec4729ade90da50996f5Chris Craik int32_t outlineInsetsBottom; 8647cd8e921db73e894f94ec4729ade90da50996f5Chris Craik float outlineRadius; 8777b5cad3efedd20f2b7cc14d87ccce1b0261960aChris Craik uint8_t outlineAlpha; 8847cd8e921db73e894f94ec4729ade90da50996f5Chris Craik 89282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski png_uint_32 allocHeight; 90282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski png_bytepp allocRows; 91282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski}; 92282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 93859e19f97d481bf07c768087d8eb3031fac77aadJohn Reckstatic void log_warning(png_structp png_ptr, png_const_charp warning_message) 94859e19f97d481bf07c768087d8eb3031fac77aadJohn Reck{ 95859e19f97d481bf07c768087d8eb3031fac77aadJohn Reck const char* imageName = (const char*) png_get_error_ptr(png_ptr); 96859e19f97d481bf07c768087d8eb3031fac77aadJohn Reck fprintf(stderr, "%s: libpng warning: %s\n", imageName, warning_message); 97859e19f97d481bf07c768087d8eb3031fac77aadJohn Reck} 98859e19f97d481bf07c768087d8eb3031fac77aadJohn Reck 99282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinskistatic void read_png(const char* imageName, 100282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski png_structp read_ptr, png_infop read_info, 101282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski image_info* outImageInfo) 102282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski{ 103282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski int color_type; 104282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski int bit_depth, interlace_type, compression_type; 105282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski int i; 106282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 107859e19f97d481bf07c768087d8eb3031fac77aadJohn Reck png_set_error_fn(read_ptr, const_cast<char*>(imageName), 108859e19f97d481bf07c768087d8eb3031fac77aadJohn Reck NULL /* use default errorfn */, log_warning); 109282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski png_read_info(read_ptr, read_info); 110282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 111282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski png_get_IHDR(read_ptr, read_info, &outImageInfo->width, 112282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski &outImageInfo->height, &bit_depth, &color_type, 113282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski &interlace_type, &compression_type, NULL); 114282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 115282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski //printf("Image %s:\n", imageName); 116282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski //printf("color_type=%d, bit_depth=%d, interlace_type=%d, compression_type=%d\n", 117282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // color_type, bit_depth, interlace_type, compression_type); 118282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 119282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (color_type == PNG_COLOR_TYPE_PALETTE) 120282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski png_set_palette_to_rgb(read_ptr); 121282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 122282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (color_type == PNG_COLOR_TYPE_GRAY && bit_depth < 8) 123282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski png_set_expand_gray_1_2_4_to_8(read_ptr); 124282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 125282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (png_get_valid(read_ptr, read_info, PNG_INFO_tRNS)) { 126282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski //printf("Has PNG_INFO_tRNS!\n"); 127282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski png_set_tRNS_to_alpha(read_ptr); 128282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 129282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 130282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (bit_depth == 16) 131282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski png_set_strip_16(read_ptr); 132282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 133282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if ((color_type&PNG_COLOR_MASK_ALPHA) == 0) 134282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski png_set_add_alpha(read_ptr, 0xFF, PNG_FILLER_AFTER); 135282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 136282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (color_type == PNG_COLOR_TYPE_GRAY || color_type == PNG_COLOR_TYPE_GRAY_ALPHA) 137282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski png_set_gray_to_rgb(read_ptr); 138282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 139859e19f97d481bf07c768087d8eb3031fac77aadJohn Reck png_set_interlace_handling(read_ptr); 140859e19f97d481bf07c768087d8eb3031fac77aadJohn Reck 141282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski png_read_update_info(read_ptr, read_info); 142282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 143282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski outImageInfo->rows = (png_bytepp)malloc( 144282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski outImageInfo->height * sizeof(png_bytep)); 145282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski outImageInfo->allocHeight = outImageInfo->height; 146282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski outImageInfo->allocRows = outImageInfo->rows; 147282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 148282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski png_set_rows(read_ptr, read_info, outImageInfo->rows); 149282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 150282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski for (i = 0; i < (int)outImageInfo->height; i++) 151282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski { 152282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski outImageInfo->rows[i] = (png_bytep) 153282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski malloc(png_get_rowbytes(read_ptr, read_info)); 154282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 155282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 156282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski png_read_image(read_ptr, outImageInfo->rows); 157282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 158282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski png_read_end(read_ptr, read_info); 159282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 1602412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe if (kIsDebug) { 1612412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe printf("Image %s: w=%d, h=%d, d=%d, colors=%d, inter=%d, comp=%d\n", 1622412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe imageName, 1632412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe (int)outImageInfo->width, (int)outImageInfo->height, 1642412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe bit_depth, color_type, 1652412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe interlace_type, compression_type); 1662412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe } 167282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 168282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski png_get_IHDR(read_ptr, read_info, &outImageInfo->width, 169282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski &outImageInfo->height, &bit_depth, &color_type, 170282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski &interlace_type, &compression_type, NULL); 171282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski} 172282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 173282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski#define COLOR_TRANSPARENT 0 174282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski#define COLOR_WHITE 0xFFFFFFFF 175282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski#define COLOR_TICK 0xFF000000 176282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski#define COLOR_LAYOUT_BOUNDS_TICK 0xFF0000FF 177282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 178282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinskienum { 179282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski TICK_TYPE_NONE, 180282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski TICK_TYPE_TICK, 181282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski TICK_TYPE_LAYOUT_BOUNDS, 182282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski TICK_TYPE_BOTH 183282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski}; 184282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 185282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinskistatic int tick_type(png_bytep p, bool transparent, const char** outError) 186282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski{ 187282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski png_uint_32 color = p[0] | (p[1] << 8) | (p[2] << 16) | (p[3] << 24); 188282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 189282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (transparent) { 190282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (p[3] == 0) { 191282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski return TICK_TYPE_NONE; 192282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 193282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (color == COLOR_LAYOUT_BOUNDS_TICK) { 194282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski return TICK_TYPE_LAYOUT_BOUNDS; 195282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 196282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (color == COLOR_TICK) { 197282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski return TICK_TYPE_TICK; 198282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 199282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 200282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // Error cases 201282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (p[3] != 0xff) { 202282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski *outError = "Frame pixels must be either solid or transparent (not intermediate alphas)"; 203282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski return TICK_TYPE_NONE; 204282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 205282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (p[0] != 0 || p[1] != 0 || p[2] != 0) { 206282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski *outError = "Ticks in transparent frame must be black or red"; 207282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 208282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski return TICK_TYPE_TICK; 209282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 210282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 211282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (p[3] != 0xFF) { 212282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski *outError = "White frame must be a solid color (no alpha)"; 213282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 214282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (color == COLOR_WHITE) { 215282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski return TICK_TYPE_NONE; 216282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 217282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (color == COLOR_TICK) { 218282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski return TICK_TYPE_TICK; 219282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 220282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (color == COLOR_LAYOUT_BOUNDS_TICK) { 221282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski return TICK_TYPE_LAYOUT_BOUNDS; 222282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 223282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 224282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (p[0] != 0 || p[1] != 0 || p[2] != 0) { 225282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski *outError = "Ticks in white frame must be black or red"; 226282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski return TICK_TYPE_NONE; 227282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 228282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski return TICK_TYPE_TICK; 229282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski} 230282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 231282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinskienum { 232282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski TICK_START, 233282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski TICK_INSIDE_1, 234282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski TICK_OUTSIDE_1 235282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski}; 236282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 237282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinskistatic status_t get_horizontal_ticks( 238282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski png_bytep row, int width, bool transparent, bool required, 239282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski int32_t* outLeft, int32_t* outRight, const char** outError, 240282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski uint8_t* outDivs, bool multipleAllowed) 241282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski{ 242282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski int i; 243282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski *outLeft = *outRight = -1; 244282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski int state = TICK_START; 245282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski bool found = false; 246282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 247282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski for (i=1; i<width-1; i++) { 248282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (TICK_TYPE_TICK == tick_type(row+i*4, transparent, outError)) { 249282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (state == TICK_START || 250282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski (state == TICK_OUTSIDE_1 && multipleAllowed)) { 251282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski *outLeft = i-1; 252282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski *outRight = width-2; 253282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski found = true; 254282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (outDivs != NULL) { 255282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski *outDivs += 2; 256282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 257282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski state = TICK_INSIDE_1; 258282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } else if (state == TICK_OUTSIDE_1) { 259282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski *outError = "Can't have more than one marked region along edge"; 260282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski *outLeft = i; 261282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski return UNKNOWN_ERROR; 262282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 263282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } else if (*outError == NULL) { 264282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (state == TICK_INSIDE_1) { 265282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // We're done with this div. Move on to the next. 266282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski *outRight = i-1; 267282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski outRight += 2; 268282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski outLeft += 2; 269282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski state = TICK_OUTSIDE_1; 270282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 271282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } else { 272282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski *outLeft = i; 273282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski return UNKNOWN_ERROR; 274282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 275282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 276282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 277282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (required && !found) { 278282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski *outError = "No marked region found along edge"; 279282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski *outLeft = -1; 280282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski return UNKNOWN_ERROR; 281282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 282282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 283282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski return NO_ERROR; 284282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski} 285282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 286282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinskistatic status_t get_vertical_ticks( 287282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski png_bytepp rows, int offset, int height, bool transparent, bool required, 288282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski int32_t* outTop, int32_t* outBottom, const char** outError, 289282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski uint8_t* outDivs, bool multipleAllowed) 290282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski{ 291282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski int i; 292282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski *outTop = *outBottom = -1; 293282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski int state = TICK_START; 294282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski bool found = false; 295282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 296282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski for (i=1; i<height-1; i++) { 297282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (TICK_TYPE_TICK == tick_type(rows[i]+offset, transparent, outError)) { 298282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (state == TICK_START || 299282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski (state == TICK_OUTSIDE_1 && multipleAllowed)) { 300282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski *outTop = i-1; 301282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski *outBottom = height-2; 302282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski found = true; 303282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (outDivs != NULL) { 304282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski *outDivs += 2; 305282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 306282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski state = TICK_INSIDE_1; 307282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } else if (state == TICK_OUTSIDE_1) { 308282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski *outError = "Can't have more than one marked region along edge"; 309282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski *outTop = i; 310282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski return UNKNOWN_ERROR; 311282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 312282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } else if (*outError == NULL) { 313282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (state == TICK_INSIDE_1) { 314282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // We're done with this div. Move on to the next. 315282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski *outBottom = i-1; 316282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski outTop += 2; 317282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski outBottom += 2; 318282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski state = TICK_OUTSIDE_1; 319282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 320282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } else { 321282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski *outTop = i; 322282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski return UNKNOWN_ERROR; 323282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 324282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 325282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 326282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (required && !found) { 327282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski *outError = "No marked region found along edge"; 328282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski *outTop = -1; 329282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski return UNKNOWN_ERROR; 330282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 331282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 332282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski return NO_ERROR; 333282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski} 334282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 335282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinskistatic status_t get_horizontal_layout_bounds_ticks( 3362412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe png_bytep row, int width, bool transparent, bool /* required */, 337282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski int32_t* outLeft, int32_t* outRight, const char** outError) 338282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski{ 339282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski int i; 340282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski *outLeft = *outRight = 0; 341282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 342282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // Look for left tick 343282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (TICK_TYPE_LAYOUT_BOUNDS == tick_type(row + 4, transparent, outError)) { 344282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // Starting with a layout padding tick 345282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski i = 1; 346282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski while (i < width - 1) { 347282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski (*outLeft)++; 348282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski i++; 349282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski int tick = tick_type(row + i * 4, transparent, outError); 350282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (tick != TICK_TYPE_LAYOUT_BOUNDS) { 351282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski break; 352282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 353282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 354282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 355282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 356282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // Look for right tick 357282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (TICK_TYPE_LAYOUT_BOUNDS == tick_type(row + (width - 2) * 4, transparent, outError)) { 358282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // Ending with a layout padding tick 359282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski i = width - 2; 360282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski while (i > 1) { 361282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski (*outRight)++; 362282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski i--; 363282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski int tick = tick_type(row+i*4, transparent, outError); 364282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (tick != TICK_TYPE_LAYOUT_BOUNDS) { 365282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski break; 366282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 367282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 368282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 369282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 370282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski return NO_ERROR; 371282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski} 372282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 373282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinskistatic status_t get_vertical_layout_bounds_ticks( 3742412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe png_bytepp rows, int offset, int height, bool transparent, bool /* required */, 375282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski int32_t* outTop, int32_t* outBottom, const char** outError) 376282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski{ 377282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski int i; 378282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski *outTop = *outBottom = 0; 379282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 380282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // Look for top tick 381282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (TICK_TYPE_LAYOUT_BOUNDS == tick_type(rows[1] + offset, transparent, outError)) { 382282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // Starting with a layout padding tick 383282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski i = 1; 384282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski while (i < height - 1) { 385282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski (*outTop)++; 386282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski i++; 387282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski int tick = tick_type(rows[i] + offset, transparent, outError); 388282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (tick != TICK_TYPE_LAYOUT_BOUNDS) { 389282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski break; 390282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 391282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 392282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 393282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 394282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // Look for bottom tick 395282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (TICK_TYPE_LAYOUT_BOUNDS == tick_type(rows[height - 2] + offset, transparent, outError)) { 396282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // Ending with a layout padding tick 397282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski i = height - 2; 398282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski while (i > 1) { 399282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski (*outBottom)++; 400282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski i--; 401282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski int tick = tick_type(rows[i] + offset, transparent, outError); 402282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (tick != TICK_TYPE_LAYOUT_BOUNDS) { 403282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski break; 404282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 405282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 406282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 407282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 408282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski return NO_ERROR; 409282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski} 410282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 41147cd8e921db73e894f94ec4729ade90da50996f5Chris Craikstatic void find_max_opacity(png_byte** rows, 41247cd8e921db73e894f94ec4729ade90da50996f5Chris Craik int startX, int startY, int endX, int endY, int dX, int dY, 41347cd8e921db73e894f94ec4729ade90da50996f5Chris Craik int* out_inset) 41447cd8e921db73e894f94ec4729ade90da50996f5Chris Craik{ 41547cd8e921db73e894f94ec4729ade90da50996f5Chris Craik bool opaque_within_inset = true; 41677b5cad3efedd20f2b7cc14d87ccce1b0261960aChris Craik uint8_t max_opacity = 0; 41747cd8e921db73e894f94ec4729ade90da50996f5Chris Craik int inset = 0; 41847cd8e921db73e894f94ec4729ade90da50996f5Chris Craik *out_inset = 0; 41947cd8e921db73e894f94ec4729ade90da50996f5Chris Craik for (int x = startX, y = startY; x != endX && y != endY; x += dX, y += dY, inset++) { 42047cd8e921db73e894f94ec4729ade90da50996f5Chris Craik png_byte* color = rows[y] + x * 4; 42177b5cad3efedd20f2b7cc14d87ccce1b0261960aChris Craik uint8_t opacity = color[3]; 42247cd8e921db73e894f94ec4729ade90da50996f5Chris Craik if (opacity > max_opacity) { 42347cd8e921db73e894f94ec4729ade90da50996f5Chris Craik max_opacity = opacity; 42447cd8e921db73e894f94ec4729ade90da50996f5Chris Craik *out_inset = inset; 42547cd8e921db73e894f94ec4729ade90da50996f5Chris Craik } 42647cd8e921db73e894f94ec4729ade90da50996f5Chris Craik if (opacity == 0xff) return; 42747cd8e921db73e894f94ec4729ade90da50996f5Chris Craik } 42847cd8e921db73e894f94ec4729ade90da50996f5Chris Craik} 42947cd8e921db73e894f94ec4729ade90da50996f5Chris Craik 43077b5cad3efedd20f2b7cc14d87ccce1b0261960aChris Craikstatic uint8_t max_alpha_over_row(png_byte* row, int startX, int endX) 43147cd8e921db73e894f94ec4729ade90da50996f5Chris Craik{ 43277b5cad3efedd20f2b7cc14d87ccce1b0261960aChris Craik uint8_t max_alpha = 0; 43347cd8e921db73e894f94ec4729ade90da50996f5Chris Craik for (int x = startX; x < endX; x++) { 43477b5cad3efedd20f2b7cc14d87ccce1b0261960aChris Craik uint8_t alpha = (row + x * 4)[3]; 43577b5cad3efedd20f2b7cc14d87ccce1b0261960aChris Craik if (alpha > max_alpha) max_alpha = alpha; 43647cd8e921db73e894f94ec4729ade90da50996f5Chris Craik } 43777b5cad3efedd20f2b7cc14d87ccce1b0261960aChris Craik return max_alpha; 43847cd8e921db73e894f94ec4729ade90da50996f5Chris Craik} 43947cd8e921db73e894f94ec4729ade90da50996f5Chris Craik 44077b5cad3efedd20f2b7cc14d87ccce1b0261960aChris Craikstatic uint8_t max_alpha_over_col(png_byte** rows, int offsetX, int startY, int endY) 44147cd8e921db73e894f94ec4729ade90da50996f5Chris Craik{ 44277b5cad3efedd20f2b7cc14d87ccce1b0261960aChris Craik uint8_t max_alpha = 0; 44347cd8e921db73e894f94ec4729ade90da50996f5Chris Craik for (int y = startY; y < endY; y++) { 44477b5cad3efedd20f2b7cc14d87ccce1b0261960aChris Craik uint8_t alpha = (rows[y] + offsetX * 4)[3]; 44577b5cad3efedd20f2b7cc14d87ccce1b0261960aChris Craik if (alpha > max_alpha) max_alpha = alpha; 44647cd8e921db73e894f94ec4729ade90da50996f5Chris Craik } 44777b5cad3efedd20f2b7cc14d87ccce1b0261960aChris Craik return max_alpha; 44847cd8e921db73e894f94ec4729ade90da50996f5Chris Craik} 44947cd8e921db73e894f94ec4729ade90da50996f5Chris Craik 45047cd8e921db73e894f94ec4729ade90da50996f5Chris Craikstatic void get_outline(image_info* image) 45147cd8e921db73e894f94ec4729ade90da50996f5Chris Craik{ 45247cd8e921db73e894f94ec4729ade90da50996f5Chris Craik int midX = image->width / 2; 45347cd8e921db73e894f94ec4729ade90da50996f5Chris Craik int midY = image->height / 2; 45447cd8e921db73e894f94ec4729ade90da50996f5Chris Craik int endX = image->width - 2; 45547cd8e921db73e894f94ec4729ade90da50996f5Chris Craik int endY = image->height - 2; 45647cd8e921db73e894f94ec4729ade90da50996f5Chris Craik 45747cd8e921db73e894f94ec4729ade90da50996f5Chris Craik // find left and right extent of nine patch content on center row 45847cd8e921db73e894f94ec4729ade90da50996f5Chris Craik if (image->width > 4) { 45947cd8e921db73e894f94ec4729ade90da50996f5Chris Craik find_max_opacity(image->rows, 1, midY, midX, -1, 1, 0, &image->outlineInsetsLeft); 46047cd8e921db73e894f94ec4729ade90da50996f5Chris Craik find_max_opacity(image->rows, endX, midY, midX, -1, -1, 0, &image->outlineInsetsRight); 46147cd8e921db73e894f94ec4729ade90da50996f5Chris Craik } else { 46247cd8e921db73e894f94ec4729ade90da50996f5Chris Craik image->outlineInsetsLeft = 0; 46347cd8e921db73e894f94ec4729ade90da50996f5Chris Craik image->outlineInsetsRight = 0; 46447cd8e921db73e894f94ec4729ade90da50996f5Chris Craik } 46547cd8e921db73e894f94ec4729ade90da50996f5Chris Craik 46647cd8e921db73e894f94ec4729ade90da50996f5Chris Craik // find top and bottom extent of nine patch content on center column 46747cd8e921db73e894f94ec4729ade90da50996f5Chris Craik if (image->height > 4) { 46847cd8e921db73e894f94ec4729ade90da50996f5Chris Craik find_max_opacity(image->rows, midX, 1, -1, midY, 0, 1, &image->outlineInsetsTop); 46947cd8e921db73e894f94ec4729ade90da50996f5Chris Craik find_max_opacity(image->rows, midX, endY, -1, midY, 0, -1, &image->outlineInsetsBottom); 47047cd8e921db73e894f94ec4729ade90da50996f5Chris Craik } else { 47147cd8e921db73e894f94ec4729ade90da50996f5Chris Craik image->outlineInsetsTop = 0; 47247cd8e921db73e894f94ec4729ade90da50996f5Chris Craik image->outlineInsetsBottom = 0; 47347cd8e921db73e894f94ec4729ade90da50996f5Chris Craik } 47447cd8e921db73e894f94ec4729ade90da50996f5Chris Craik 47547cd8e921db73e894f94ec4729ade90da50996f5Chris Craik int innerStartX = 1 + image->outlineInsetsLeft; 47647cd8e921db73e894f94ec4729ade90da50996f5Chris Craik int innerStartY = 1 + image->outlineInsetsTop; 47747cd8e921db73e894f94ec4729ade90da50996f5Chris Craik int innerEndX = endX - image->outlineInsetsRight; 47847cd8e921db73e894f94ec4729ade90da50996f5Chris Craik int innerEndY = endY - image->outlineInsetsBottom; 47947cd8e921db73e894f94ec4729ade90da50996f5Chris Craik int innerMidX = (innerEndX + innerStartX) / 2; 48047cd8e921db73e894f94ec4729ade90da50996f5Chris Craik int innerMidY = (innerEndY + innerStartY) / 2; 48147cd8e921db73e894f94ec4729ade90da50996f5Chris Craik 48247cd8e921db73e894f94ec4729ade90da50996f5Chris Craik // assuming the image is a round rect, compute the radius by marching 48347cd8e921db73e894f94ec4729ade90da50996f5Chris Craik // diagonally from the top left corner towards the center 48477b5cad3efedd20f2b7cc14d87ccce1b0261960aChris Craik image->outlineAlpha = max(max_alpha_over_row(image->rows[innerMidY], innerStartX, innerEndX), 48577b5cad3efedd20f2b7cc14d87ccce1b0261960aChris Craik max_alpha_over_col(image->rows, innerMidX, innerStartY, innerStartY)); 48647cd8e921db73e894f94ec4729ade90da50996f5Chris Craik 48747cd8e921db73e894f94ec4729ade90da50996f5Chris Craik int diagonalInset = 0; 48847cd8e921db73e894f94ec4729ade90da50996f5Chris Craik find_max_opacity(image->rows, innerStartX, innerStartY, innerMidX, innerMidY, 1, 1, 48947cd8e921db73e894f94ec4729ade90da50996f5Chris Craik &diagonalInset); 49047cd8e921db73e894f94ec4729ade90da50996f5Chris Craik 49147d86230823de5d372688dff2b6e363a607009a8Chris Craik /* Determine source radius based upon inset: 49247d86230823de5d372688dff2b6e363a607009a8Chris Craik * sqrt(r^2 + r^2) = sqrt(i^2 + i^2) + r 49347d86230823de5d372688dff2b6e363a607009a8Chris Craik * sqrt(2) * r = sqrt(2) * i + r 49447d86230823de5d372688dff2b6e363a607009a8Chris Craik * (sqrt(2) - 1) * r = sqrt(2) * i 49547d86230823de5d372688dff2b6e363a607009a8Chris Craik * r = sqrt(2) / (sqrt(2) - 1) * i 49647d86230823de5d372688dff2b6e363a607009a8Chris Craik */ 49747d86230823de5d372688dff2b6e363a607009a8Chris Craik image->outlineRadius = 3.4142f * diagonalInset; 49847cd8e921db73e894f94ec4729ade90da50996f5Chris Craik 4998daabceb2efddebe2e7c0b2425ad9f8ef62c0a5cAndreas Gampe if (kIsDebug) { 5008daabceb2efddebe2e7c0b2425ad9f8ef62c0a5cAndreas Gampe printf("outline insets %d %d %d %d, rad %f, alpha %x\n", 5018daabceb2efddebe2e7c0b2425ad9f8ef62c0a5cAndreas Gampe image->outlineInsetsLeft, 5028daabceb2efddebe2e7c0b2425ad9f8ef62c0a5cAndreas Gampe image->outlineInsetsTop, 5038daabceb2efddebe2e7c0b2425ad9f8ef62c0a5cAndreas Gampe image->outlineInsetsRight, 5048daabceb2efddebe2e7c0b2425ad9f8ef62c0a5cAndreas Gampe image->outlineInsetsBottom, 5058daabceb2efddebe2e7c0b2425ad9f8ef62c0a5cAndreas Gampe image->outlineRadius, 5068daabceb2efddebe2e7c0b2425ad9f8ef62c0a5cAndreas Gampe image->outlineAlpha); 5078daabceb2efddebe2e7c0b2425ad9f8ef62c0a5cAndreas Gampe } 50847cd8e921db73e894f94ec4729ade90da50996f5Chris Craik} 50947cd8e921db73e894f94ec4729ade90da50996f5Chris Craik 510282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 511282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinskistatic uint32_t get_color( 512282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski png_bytepp rows, int left, int top, int right, int bottom) 513282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski{ 514282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski png_bytep color = rows[top] + left*4; 515282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 516282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (left > right || top > bottom) { 517282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski return Res_png_9patch::TRANSPARENT_COLOR; 518282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 519282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 520282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski while (top <= bottom) { 521282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski for (int i = left; i <= right; i++) { 522282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski png_bytep p = rows[top]+i*4; 523282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (color[3] == 0) { 524282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (p[3] != 0) { 525282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski return Res_png_9patch::NO_COLOR; 526282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 527282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } else if (p[0] != color[0] || p[1] != color[1] 528282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski || p[2] != color[2] || p[3] != color[3]) { 529282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski return Res_png_9patch::NO_COLOR; 530282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 531282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 532282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski top++; 533282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 534282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 535282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (color[3] == 0) { 536282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski return Res_png_9patch::TRANSPARENT_COLOR; 537282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 538282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski return (color[3]<<24) | (color[0]<<16) | (color[1]<<8) | color[2]; 539282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski} 540282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 541282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinskistatic status_t do_9patch(const char* imageName, image_info* image) 542282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski{ 543282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski image->is9Patch = true; 544282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 545282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski int W = image->width; 546282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski int H = image->height; 547282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski int i, j; 548282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 549282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski int maxSizeXDivs = W * sizeof(int32_t); 550282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski int maxSizeYDivs = H * sizeof(int32_t); 5516381dd4ff212a95be30d2b445d40ff419ab076b4Narayan Kamath int32_t* xDivs = image->xDivs = (int32_t*) malloc(maxSizeXDivs); 5526381dd4ff212a95be30d2b445d40ff419ab076b4Narayan Kamath int32_t* yDivs = image->yDivs = (int32_t*) malloc(maxSizeYDivs); 553c367d48c55e5a3fa0df14fd62889e4bb6b63cb01Elliott Hughes uint8_t numXDivs = 0; 554c367d48c55e5a3fa0df14fd62889e4bb6b63cb01Elliott Hughes uint8_t numYDivs = 0; 555c367d48c55e5a3fa0df14fd62889e4bb6b63cb01Elliott Hughes 556282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski int8_t numColors; 557282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski int numRows; 558282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski int numCols; 559282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski int top; 560282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski int left; 561282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski int right; 562282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski int bottom; 563282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski memset(xDivs, -1, maxSizeXDivs); 564282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski memset(yDivs, -1, maxSizeYDivs); 565282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski image->info9Patch.paddingLeft = image->info9Patch.paddingRight = 566282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski image->info9Patch.paddingTop = image->info9Patch.paddingBottom = -1; 567282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 568282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski image->layoutBoundsLeft = image->layoutBoundsRight = 569282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski image->layoutBoundsTop = image->layoutBoundsBottom = 0; 570282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 571282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski png_bytep p = image->rows[0]; 572282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski bool transparent = p[3] == 0; 573282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski bool hasColor = false; 574282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 575282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski const char* errorMsg = NULL; 576282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski int errorPixel = -1; 577282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski const char* errorEdge = NULL; 578282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 579282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski int colorIndex = 0; 580282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 581282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // Validate size... 582282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (W < 3 || H < 3) { 583282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski errorMsg = "Image must be at least 3x3 (1x1 without frame) pixels"; 584282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski goto getout; 585282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 586282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 587282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // Validate frame... 588282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (!transparent && 589282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski (p[0] != 0xFF || p[1] != 0xFF || p[2] != 0xFF || p[3] != 0xFF)) { 590282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski errorMsg = "Must have one-pixel frame that is either transparent or white"; 591282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski goto getout; 592282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 593282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 594282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // Find left and right of sizing areas... 595282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (get_horizontal_ticks(p, W, transparent, true, &xDivs[0], 596282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski &xDivs[1], &errorMsg, &numXDivs, true) != NO_ERROR) { 597282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski errorPixel = xDivs[0]; 598282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski errorEdge = "top"; 599282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski goto getout; 600282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 601282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 602282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // Find top and bottom of sizing areas... 603282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (get_vertical_ticks(image->rows, 0, H, transparent, true, &yDivs[0], 604282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski &yDivs[1], &errorMsg, &numYDivs, true) != NO_ERROR) { 605282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski errorPixel = yDivs[0]; 606282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski errorEdge = "left"; 607282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski goto getout; 608282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 609282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 610b30296b5fda75bf383c7ab3f567eb41820747869Elliott Hughes // Copy patch size data into image... 611b30296b5fda75bf383c7ab3f567eb41820747869Elliott Hughes image->info9Patch.numXDivs = numXDivs; 612b30296b5fda75bf383c7ab3f567eb41820747869Elliott Hughes image->info9Patch.numYDivs = numYDivs; 613b30296b5fda75bf383c7ab3f567eb41820747869Elliott Hughes 614282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // Find left and right of padding area... 615282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (get_horizontal_ticks(image->rows[H-1], W, transparent, false, &image->info9Patch.paddingLeft, 616282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski &image->info9Patch.paddingRight, &errorMsg, NULL, false) != NO_ERROR) { 617282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski errorPixel = image->info9Patch.paddingLeft; 618282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski errorEdge = "bottom"; 619282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski goto getout; 620282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 621282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 622282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // Find top and bottom of padding area... 623282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (get_vertical_ticks(image->rows, (W-1)*4, H, transparent, false, &image->info9Patch.paddingTop, 624282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski &image->info9Patch.paddingBottom, &errorMsg, NULL, false) != NO_ERROR) { 625282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski errorPixel = image->info9Patch.paddingTop; 626282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski errorEdge = "right"; 627282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski goto getout; 628282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 629282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 630282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // Find left and right of layout padding... 631282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski get_horizontal_layout_bounds_ticks(image->rows[H-1], W, transparent, false, 632282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski &image->layoutBoundsLeft, 633282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski &image->layoutBoundsRight, &errorMsg); 634282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 635282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski get_vertical_layout_bounds_ticks(image->rows, (W-1)*4, H, transparent, false, 636282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski &image->layoutBoundsTop, 637282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski &image->layoutBoundsBottom, &errorMsg); 638282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 639282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski image->haveLayoutBounds = image->layoutBoundsLeft != 0 640282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski || image->layoutBoundsRight != 0 641282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski || image->layoutBoundsTop != 0 642282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski || image->layoutBoundsBottom != 0; 643282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 644282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (image->haveLayoutBounds) { 6452412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe if (kIsDebug) { 6462412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe printf("layoutBounds=%d %d %d %d\n", image->layoutBoundsLeft, image->layoutBoundsTop, 6472412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe image->layoutBoundsRight, image->layoutBoundsBottom); 6482412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe } 649282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 650282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 65147cd8e921db73e894f94ec4729ade90da50996f5Chris Craik // use opacity of pixels to estimate the round rect outline 65247cd8e921db73e894f94ec4729ade90da50996f5Chris Craik get_outline(image); 65347cd8e921db73e894f94ec4729ade90da50996f5Chris Craik 654282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // If padding is not yet specified, take values from size. 655282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (image->info9Patch.paddingLeft < 0) { 656282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski image->info9Patch.paddingLeft = xDivs[0]; 657282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski image->info9Patch.paddingRight = W - 2 - xDivs[1]; 658282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } else { 659282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // Adjust value to be correct! 660282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski image->info9Patch.paddingRight = W - 2 - image->info9Patch.paddingRight; 661282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 662282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (image->info9Patch.paddingTop < 0) { 663282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski image->info9Patch.paddingTop = yDivs[0]; 664282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski image->info9Patch.paddingBottom = H - 2 - yDivs[1]; 665282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } else { 666282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // Adjust value to be correct! 667282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski image->info9Patch.paddingBottom = H - 2 - image->info9Patch.paddingBottom; 668282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 669282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 6702412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe if (kIsDebug) { 6712412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe printf("Size ticks for %s: x0=%d, x1=%d, y0=%d, y1=%d\n", imageName, 6728daabceb2efddebe2e7c0b2425ad9f8ef62c0a5cAndreas Gampe xDivs[0], xDivs[1], 6738daabceb2efddebe2e7c0b2425ad9f8ef62c0a5cAndreas Gampe yDivs[0], yDivs[1]); 6742412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe printf("padding ticks for %s: l=%d, r=%d, t=%d, b=%d\n", imageName, 6752412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe image->info9Patch.paddingLeft, image->info9Patch.paddingRight, 6762412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe image->info9Patch.paddingTop, image->info9Patch.paddingBottom); 6772412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe } 678282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 679282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // Remove frame from image. 680282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski image->rows = (png_bytepp)malloc((H-2) * sizeof(png_bytep)); 681282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski for (i=0; i<(H-2); i++) { 682282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski image->rows[i] = image->allocRows[i+1]; 683282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski memmove(image->rows[i], image->rows[i]+4, (W-2)*4); 684282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 685282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski image->width -= 2; 686282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski W = image->width; 687282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski image->height -= 2; 688282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski H = image->height; 689282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 690282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // Figure out the number of rows and columns in the N-patch 691282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski numCols = numXDivs + 1; 692282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (xDivs[0] == 0) { // Column 1 is strechable 693282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski numCols--; 694282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 695282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (xDivs[numXDivs - 1] == W) { 696282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski numCols--; 697282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 698282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski numRows = numYDivs + 1; 699282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (yDivs[0] == 0) { // Row 1 is strechable 700282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski numRows--; 701282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 702282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (yDivs[numYDivs - 1] == H) { 703282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski numRows--; 704282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 705282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 706282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // Make sure the amount of rows and columns will fit in the number of 707282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // colors we can use in the 9-patch format. 708282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (numRows * numCols > 0x7F) { 709282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski errorMsg = "Too many rows and columns in 9-patch perimeter"; 710282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski goto getout; 711282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 712282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 713282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski numColors = numRows * numCols; 714282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski image->info9Patch.numColors = numColors; 7156381dd4ff212a95be30d2b445d40ff419ab076b4Narayan Kamath image->colors = (uint32_t*)malloc(numColors * sizeof(uint32_t)); 716282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 717282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // Fill in color information for each patch. 718282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 719282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski uint32_t c; 720282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski top = 0; 721282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 722282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // The first row always starts with the top being at y=0 and the bottom 723282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // being either yDivs[1] (if yDivs[0]=0) of yDivs[0]. In the former case 724282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // the first row is stretchable along the Y axis, otherwise it is fixed. 725282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // The last row always ends with the bottom being bitmap.height and the top 726282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // being either yDivs[numYDivs-2] (if yDivs[numYDivs-1]=bitmap.height) or 727282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // yDivs[numYDivs-1]. In the former case the last row is stretchable along 728282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // the Y axis, otherwise it is fixed. 729282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // 730282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // The first and last columns are similarly treated with respect to the X 731282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // axis. 732282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // 733282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // The above is to help explain some of the special casing that goes on the 734282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // code below. 735282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 736282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // The initial yDiv and whether the first row is considered stretchable or 737282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // not depends on whether yDiv[0] was zero or not. 738282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski for (j = (yDivs[0] == 0 ? 1 : 0); 739282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski j <= numYDivs && top < H; 740282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski j++) { 741282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (j == numYDivs) { 742282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski bottom = H; 743282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } else { 744282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski bottom = yDivs[j]; 745282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 746282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski left = 0; 747282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // The initial xDiv and whether the first column is considered 748282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // stretchable or not depends on whether xDiv[0] was zero or not. 749282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski for (i = xDivs[0] == 0 ? 1 : 0; 750282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski i <= numXDivs && left < W; 751282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski i++) { 752282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (i == numXDivs) { 753282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski right = W; 754282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } else { 755282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski right = xDivs[i]; 756282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 757282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski c = get_color(image->rows, left, top, right - 1, bottom - 1); 7586381dd4ff212a95be30d2b445d40ff419ab076b4Narayan Kamath image->colors[colorIndex++] = c; 7592412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe if (kIsDebug) { 7602412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe if (c != Res_png_9patch::NO_COLOR) 7612412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe hasColor = true; 7622412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe } 763282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski left = right; 764282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 765282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski top = bottom; 766282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 767282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 768282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski assert(colorIndex == numColors); 769282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 770282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski for (i=0; i<numColors; i++) { 771282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (hasColor) { 772282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (i == 0) printf("Colors in %s:\n ", imageName); 7736381dd4ff212a95be30d2b445d40ff419ab076b4Narayan Kamath printf(" #%08x", image->colors[i]); 774282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (i == numColors - 1) printf("\n"); 775282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 776282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 777282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinskigetout: 778282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (errorMsg) { 779282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski fprintf(stderr, 780282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski "ERROR: 9-patch image %s malformed.\n" 781282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski " %s.\n", imageName, errorMsg); 782282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (errorEdge != NULL) { 783282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (errorPixel >= 0) { 784282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski fprintf(stderr, 785282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski " Found at pixel #%d along %s edge.\n", errorPixel, errorEdge); 786282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } else { 787282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski fprintf(stderr, 788282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski " Found along %s edge.\n", errorEdge); 789282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 790282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 791282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski return UNKNOWN_ERROR; 792282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 793282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski return NO_ERROR; 794282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski} 795282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 7966381dd4ff212a95be30d2b445d40ff419ab076b4Narayan Kamathstatic void checkNinePatchSerialization(Res_png_9patch* inPatch, void* data) 797282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski{ 798282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski size_t patchSize = inPatch->serializedSize(); 7996381dd4ff212a95be30d2b445d40ff419ab076b4Narayan Kamath void* newData = malloc(patchSize); 800282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski memcpy(newData, data, patchSize); 801282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski Res_png_9patch* outPatch = inPatch->deserialize(newData); 802282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // deserialization is done in place, so outPatch == newData 803282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski assert(outPatch == newData); 804282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski assert(outPatch->numXDivs == inPatch->numXDivs); 805282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski assert(outPatch->numYDivs == inPatch->numYDivs); 806282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski assert(outPatch->paddingLeft == inPatch->paddingLeft); 807282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski assert(outPatch->paddingRight == inPatch->paddingRight); 808282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski assert(outPatch->paddingTop == inPatch->paddingTop); 809282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski assert(outPatch->paddingBottom == inPatch->paddingBottom); 810282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski for (int i = 0; i < outPatch->numXDivs; i++) { 811282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski assert(outPatch->xDivs[i] == inPatch->xDivs[i]); 812282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 813282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski for (int i = 0; i < outPatch->numYDivs; i++) { 814282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski assert(outPatch->yDivs[i] == inPatch->yDivs[i]); 815282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 816282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski for (int i = 0; i < outPatch->numColors; i++) { 817282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski assert(outPatch->colors[i] == inPatch->colors[i]); 818282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 819282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski free(newData); 820282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski} 821282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 822282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinskistatic void dump_image(int w, int h, png_bytepp rows, int color_type) 823282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski{ 824282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski int i, j, rr, gg, bb, aa; 825282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 826282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski int bpp; 827282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (color_type == PNG_COLOR_TYPE_PALETTE || color_type == PNG_COLOR_TYPE_GRAY) { 828282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski bpp = 1; 829282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } else if (color_type == PNG_COLOR_TYPE_GRAY_ALPHA) { 830282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski bpp = 2; 831282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } else if (color_type == PNG_COLOR_TYPE_RGB || color_type == PNG_COLOR_TYPE_RGB_ALPHA) { 832282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // We use a padding byte even when there is no alpha 833282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski bpp = 4; 834282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } else { 835282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski printf("Unknown color type %d.\n", color_type); 836282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 837282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 838282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski for (j = 0; j < h; j++) { 839282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski png_bytep row = rows[j]; 840282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski for (i = 0; i < w; i++) { 841282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski rr = row[0]; 842282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski gg = row[1]; 843282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski bb = row[2]; 844282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski aa = row[3]; 845282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski row += bpp; 846282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 847282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (i == 0) { 848282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski printf("Row %d:", j); 849282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 850282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski switch (bpp) { 851282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski case 1: 852282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski printf(" (%d)", rr); 853282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski break; 854282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski case 2: 855282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski printf(" (%d %d", rr, gg); 856282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski break; 857282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski case 3: 858282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski printf(" (%d %d %d)", rr, gg, bb); 859282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski break; 860282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski case 4: 861282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski printf(" (%d %d %d %d)", rr, gg, bb, aa); 862282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski break; 863282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 864282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (i == (w - 1)) { 8652412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe printf("\n"); 866282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 867282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 868282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 869282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski} 870282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 871282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski#define MAX(a,b) ((a)>(b)?(a):(b)) 872282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski#define ABS(a) ((a)<0?-(a):(a)) 873282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 874282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinskistatic void analyze_image(const char *imageName, image_info &imageInfo, int grayscaleTolerance, 875282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski png_colorp rgbPalette, png_bytep alphaPalette, 876282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski int *paletteEntries, bool *hasTransparency, int *colorType, 877282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski png_bytepp outRows) 878282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski{ 879282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski int w = imageInfo.width; 880282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski int h = imageInfo.height; 881282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski int i, j, rr, gg, bb, aa, idx; 882282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski uint32_t colors[256], col; 883282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski int num_colors = 0; 884282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski int maxGrayDeviation = 0; 885282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 886282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski bool isOpaque = true; 887282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski bool isPalette = true; 888282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski bool isGrayscale = true; 889282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 890282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // Scan the entire image and determine if: 891282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // 1. Every pixel has R == G == B (grayscale) 892282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // 2. Every pixel has A == 255 (opaque) 893282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // 3. There are no more than 256 distinct RGBA colors 894282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 8952412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe if (kIsDebug) { 8962412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe printf("Initial image data:\n"); 8972412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe dump_image(w, h, imageInfo.rows, PNG_COLOR_TYPE_RGB_ALPHA); 8982412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe } 899282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 900282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski for (j = 0; j < h; j++) { 901282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski png_bytep row = imageInfo.rows[j]; 902282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski png_bytep out = outRows[j]; 903282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski for (i = 0; i < w; i++) { 904282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski rr = *row++; 905282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski gg = *row++; 906282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski bb = *row++; 907282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski aa = *row++; 908282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 909282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski int odev = maxGrayDeviation; 910282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski maxGrayDeviation = MAX(ABS(rr - gg), maxGrayDeviation); 911282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski maxGrayDeviation = MAX(ABS(gg - bb), maxGrayDeviation); 912282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski maxGrayDeviation = MAX(ABS(bb - rr), maxGrayDeviation); 913282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (maxGrayDeviation > odev) { 9142412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe if (kIsDebug) { 9152412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe printf("New max dev. = %d at pixel (%d, %d) = (%d %d %d %d)\n", 9162412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe maxGrayDeviation, i, j, rr, gg, bb, aa); 9172412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe } 918282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 919282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 920282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // Check if image is really grayscale 921282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (isGrayscale) { 922282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (rr != gg || rr != bb) { 9232412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe if (kIsDebug) { 9242412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe printf("Found a non-gray pixel at %d, %d = (%d %d %d %d)\n", 9252412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe i, j, rr, gg, bb, aa); 9262412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe } 927282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski isGrayscale = false; 928282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 929282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 930282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 931282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // Check if image is really opaque 932282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (isOpaque) { 933282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (aa != 0xff) { 9342412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe if (kIsDebug) { 9352412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe printf("Found a non-opaque pixel at %d, %d = (%d %d %d %d)\n", 9362412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe i, j, rr, gg, bb, aa); 9372412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe } 938282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski isOpaque = false; 939282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 940282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 941282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 942282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // Check if image is really <= 256 colors 943282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (isPalette) { 944282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski col = (uint32_t) ((rr << 24) | (gg << 16) | (bb << 8) | aa); 945282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski bool match = false; 946282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski for (idx = 0; idx < num_colors; idx++) { 947282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (colors[idx] == col) { 948282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski match = true; 949282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski break; 950282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 951282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 952282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 953282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // Write the palette index for the pixel to outRows optimistically 954282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // We might overwrite it later if we decide to encode as gray or 955282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // gray + alpha 956282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski *out++ = idx; 957282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (!match) { 958282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (num_colors == 256) { 9592412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe if (kIsDebug) { 9602412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe printf("Found 257th color at %d, %d\n", i, j); 9612412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe } 962282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski isPalette = false; 963282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } else { 964282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski colors[num_colors++] = col; 965282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 966282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 967282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 968282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 969282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 970282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 971282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski *paletteEntries = 0; 972282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski *hasTransparency = !isOpaque; 973282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski int bpp = isOpaque ? 3 : 4; 974282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski int paletteSize = w * h + bpp * num_colors; 975282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 9762412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe if (kIsDebug) { 9772412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe printf("isGrayscale = %s\n", isGrayscale ? "true" : "false"); 9782412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe printf("isOpaque = %s\n", isOpaque ? "true" : "false"); 9792412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe printf("isPalette = %s\n", isPalette ? "true" : "false"); 9802412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe printf("Size w/ palette = %d, gray+alpha = %d, rgb(a) = %d\n", 9812412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe paletteSize, 2 * w * h, bpp * w * h); 9822412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe printf("Max gray deviation = %d, tolerance = %d\n", maxGrayDeviation, grayscaleTolerance); 9832412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe } 984282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 985282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // Choose the best color type for the image. 986282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // 1. Opaque gray - use COLOR_TYPE_GRAY at 1 byte/pixel 987282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // 2. Gray + alpha - use COLOR_TYPE_PALETTE if the number of distinct combinations 988282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // is sufficiently small, otherwise use COLOR_TYPE_GRAY_ALPHA 989282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // 3. RGB(A) - use COLOR_TYPE_PALETTE if the number of distinct colors is sufficiently 990282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // small, otherwise use COLOR_TYPE_RGB{_ALPHA} 991282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (isGrayscale) { 992282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (isOpaque) { 993282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski *colorType = PNG_COLOR_TYPE_GRAY; // 1 byte/pixel 994282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } else { 995282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // Use a simple heuristic to determine whether using a palette will 996282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // save space versus using gray + alpha for each pixel. 997282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // This doesn't take into account chunk overhead, filtering, LZ 998282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // compression, etc. 999282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (isPalette && (paletteSize < 2 * w * h)) { 1000282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski *colorType = PNG_COLOR_TYPE_PALETTE; // 1 byte/pixel + 4 bytes/color 1001282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } else { 1002282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski *colorType = PNG_COLOR_TYPE_GRAY_ALPHA; // 2 bytes per pixel 1003282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 1004282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 1005282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } else if (isPalette && (paletteSize < bpp * w * h)) { 1006282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski *colorType = PNG_COLOR_TYPE_PALETTE; 1007282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } else { 1008282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (maxGrayDeviation <= grayscaleTolerance) { 1009282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski printf("%s: forcing image to gray (max deviation = %d)\n", imageName, maxGrayDeviation); 1010282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski *colorType = isOpaque ? PNG_COLOR_TYPE_GRAY : PNG_COLOR_TYPE_GRAY_ALPHA; 1011282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } else { 1012282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski *colorType = isOpaque ? PNG_COLOR_TYPE_RGB : PNG_COLOR_TYPE_RGB_ALPHA; 1013282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 1014282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 1015282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 1016282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // Perform postprocessing of the image or palette data based on the final 1017282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // color type chosen 1018282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 1019282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (*colorType == PNG_COLOR_TYPE_PALETTE) { 1020282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // Create separate RGB and Alpha palettes and set the number of colors 1021282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski *paletteEntries = num_colors; 1022282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 1023282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // Create the RGB and alpha palettes 1024282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski for (int idx = 0; idx < num_colors; idx++) { 1025282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski col = colors[idx]; 1026282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski rgbPalette[idx].red = (png_byte) ((col >> 24) & 0xff); 1027282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski rgbPalette[idx].green = (png_byte) ((col >> 16) & 0xff); 1028282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski rgbPalette[idx].blue = (png_byte) ((col >> 8) & 0xff); 1029282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski alphaPalette[idx] = (png_byte) (col & 0xff); 1030282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 1031282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } else if (*colorType == PNG_COLOR_TYPE_GRAY || *colorType == PNG_COLOR_TYPE_GRAY_ALPHA) { 1032282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // If the image is gray or gray + alpha, compact the pixels into outRows 1033282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski for (j = 0; j < h; j++) { 1034282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski png_bytep row = imageInfo.rows[j]; 1035282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski png_bytep out = outRows[j]; 1036282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski for (i = 0; i < w; i++) { 1037282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski rr = *row++; 1038282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski gg = *row++; 1039282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski bb = *row++; 1040282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski aa = *row++; 1041282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 1042282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (isGrayscale) { 1043282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski *out++ = rr; 1044282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } else { 1045282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski *out++ = (png_byte) (rr * 0.2126f + gg * 0.7152f + bb * 0.0722f); 1046282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 1047282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (!isOpaque) { 1048282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski *out++ = aa; 1049282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 1050282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 1051282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 1052282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 1053282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski} 1054282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 1055282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 1056282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinskistatic void write_png(const char* imageName, 1057282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski png_structp write_ptr, png_infop write_info, 1058282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski image_info& imageInfo, int grayscaleTolerance) 1059282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski{ 1060282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski png_uint_32 width, height; 1061282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski int color_type; 1062282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski int bit_depth, interlace_type, compression_type; 1063282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski int i; 1064282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 106547cd8e921db73e894f94ec4729ade90da50996f5Chris Craik png_unknown_chunk unknowns[3]; 1066282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski unknowns[0].data = NULL; 1067282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski unknowns[1].data = NULL; 106847cd8e921db73e894f94ec4729ade90da50996f5Chris Craik unknowns[2].data = NULL; 1069282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 1070282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski png_bytepp outRows = (png_bytepp) malloc((int) imageInfo.height * sizeof(png_bytep)); 1071282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (outRows == (png_bytepp) 0) { 1072282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski printf("Can't allocate output buffer!\n"); 1073282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski exit(1); 1074282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 1075282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski for (i = 0; i < (int) imageInfo.height; i++) { 1076282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski outRows[i] = (png_bytep) malloc(2 * (int) imageInfo.width); 1077282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (outRows[i] == (png_bytep) 0) { 1078282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski printf("Can't allocate output buffer!\n"); 1079282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski exit(1); 1080282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 1081282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 1082282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 1083282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski png_set_compression_level(write_ptr, Z_BEST_COMPRESSION); 1084282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 10852412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe if (kIsDebug) { 10862412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe printf("Writing image %s: w = %d, h = %d\n", imageName, 10872412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe (int) imageInfo.width, (int) imageInfo.height); 10882412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe } 1089282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 1090282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski png_color rgbPalette[256]; 1091282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski png_byte alphaPalette[256]; 1092282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski bool hasTransparency; 1093282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski int paletteEntries; 1094282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 1095282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski analyze_image(imageName, imageInfo, grayscaleTolerance, rgbPalette, alphaPalette, 1096282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski &paletteEntries, &hasTransparency, &color_type, outRows); 1097282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 1098282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // If the image is a 9-patch, we need to preserve it as a ARGB file to make 1099282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // sure the pixels will not be pre-dithered/clamped until we decide they are 1100282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (imageInfo.is9Patch && (color_type == PNG_COLOR_TYPE_RGB || 1101282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski color_type == PNG_COLOR_TYPE_GRAY || color_type == PNG_COLOR_TYPE_PALETTE)) { 1102282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski color_type = PNG_COLOR_TYPE_RGB_ALPHA; 1103282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 1104282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 11052412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe if (kIsDebug) { 11062412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe switch (color_type) { 11072412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe case PNG_COLOR_TYPE_PALETTE: 11082412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe printf("Image %s has %d colors%s, using PNG_COLOR_TYPE_PALETTE\n", 11092412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe imageName, paletteEntries, 11102412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe hasTransparency ? " (with alpha)" : ""); 11112412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe break; 11122412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe case PNG_COLOR_TYPE_GRAY: 11132412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe printf("Image %s is opaque gray, using PNG_COLOR_TYPE_GRAY\n", imageName); 11142412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe break; 11152412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe case PNG_COLOR_TYPE_GRAY_ALPHA: 11162412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe printf("Image %s is gray + alpha, using PNG_COLOR_TYPE_GRAY_ALPHA\n", imageName); 11172412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe break; 11182412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe case PNG_COLOR_TYPE_RGB: 11192412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe printf("Image %s is opaque RGB, using PNG_COLOR_TYPE_RGB\n", imageName); 11202412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe break; 11212412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe case PNG_COLOR_TYPE_RGB_ALPHA: 11222412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe printf("Image %s is RGB + alpha, using PNG_COLOR_TYPE_RGB_ALPHA\n", imageName); 11232412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe break; 11242412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe } 1125282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 1126282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 1127282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski png_set_IHDR(write_ptr, write_info, imageInfo.width, imageInfo.height, 1128282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 8, color_type, PNG_INTERLACE_NONE, 1129282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski PNG_COMPRESSION_TYPE_DEFAULT, PNG_FILTER_TYPE_DEFAULT); 1130282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 1131282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (color_type == PNG_COLOR_TYPE_PALETTE) { 1132282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski png_set_PLTE(write_ptr, write_info, rgbPalette, paletteEntries); 1133282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (hasTransparency) { 1134282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski png_set_tRNS(write_ptr, write_info, alphaPalette, paletteEntries, (png_color_16p) 0); 1135282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 1136282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski png_set_filter(write_ptr, 0, PNG_NO_FILTERS); 1137282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } else { 1138282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski png_set_filter(write_ptr, 0, PNG_ALL_FILTERS); 1139282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 1140282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 1141282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (imageInfo.is9Patch) { 114247cd8e921db73e894f94ec4729ade90da50996f5Chris Craik int chunk_count = 2 + (imageInfo.haveLayoutBounds ? 1 : 0); 114347cd8e921db73e894f94ec4729ade90da50996f5Chris Craik int p_index = imageInfo.haveLayoutBounds ? 2 : 1; 114447cd8e921db73e894f94ec4729ade90da50996f5Chris Craik int b_index = 1; 114547cd8e921db73e894f94ec4729ade90da50996f5Chris Craik int o_index = 0; 114647cd8e921db73e894f94ec4729ade90da50996f5Chris Craik 114747cd8e921db73e894f94ec4729ade90da50996f5Chris Craik // Chunks ordered thusly because older platforms depend on the base 9 patch data being last 1148282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski png_byte *chunk_names = imageInfo.haveLayoutBounds 114947cd8e921db73e894f94ec4729ade90da50996f5Chris Craik ? (png_byte*)"npOl\0npLb\0npTc\0" 115047cd8e921db73e894f94ec4729ade90da50996f5Chris Craik : (png_byte*)"npOl\0npTc"; 115147cd8e921db73e894f94ec4729ade90da50996f5Chris Craik 115247cd8e921db73e894f94ec4729ade90da50996f5Chris Craik // base 9 patch data 11532412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe if (kIsDebug) { 11542412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe printf("Adding 9-patch info...\n"); 11552412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe } 1156282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski strcpy((char*)unknowns[p_index].name, "npTc"); 11576381dd4ff212a95be30d2b445d40ff419ab076b4Narayan Kamath unknowns[p_index].data = (png_byte*)imageInfo.serialize9patch(); 1158282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski unknowns[p_index].size = imageInfo.info9Patch.serializedSize(); 1159282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // TODO: remove the check below when everything works 1160282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski checkNinePatchSerialization(&imageInfo.info9Patch, unknowns[p_index].data); 1161282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 116247cd8e921db73e894f94ec4729ade90da50996f5Chris Craik // automatically generated 9 patch outline data 116347cd8e921db73e894f94ec4729ade90da50996f5Chris Craik int chunk_size = sizeof(png_uint_32) * 6; 116447cd8e921db73e894f94ec4729ade90da50996f5Chris Craik strcpy((char*)unknowns[o_index].name, "npOl"); 116547cd8e921db73e894f94ec4729ade90da50996f5Chris Craik unknowns[o_index].data = (png_byte*) calloc(chunk_size, 1); 116647cd8e921db73e894f94ec4729ade90da50996f5Chris Craik png_byte outputData[chunk_size]; 116747cd8e921db73e894f94ec4729ade90da50996f5Chris Craik memcpy(&outputData, &imageInfo.outlineInsetsLeft, 4 * sizeof(png_uint_32)); 116847cd8e921db73e894f94ec4729ade90da50996f5Chris Craik ((float*) outputData)[4] = imageInfo.outlineRadius; 116977b5cad3efedd20f2b7cc14d87ccce1b0261960aChris Craik ((png_uint_32*) outputData)[5] = imageInfo.outlineAlpha; 117047cd8e921db73e894f94ec4729ade90da50996f5Chris Craik memcpy(unknowns[o_index].data, &outputData, chunk_size); 117147cd8e921db73e894f94ec4729ade90da50996f5Chris Craik unknowns[o_index].size = chunk_size; 117247cd8e921db73e894f94ec4729ade90da50996f5Chris Craik 117347cd8e921db73e894f94ec4729ade90da50996f5Chris Craik // optional optical inset / layout bounds data 1174282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (imageInfo.haveLayoutBounds) { 1175282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski int chunk_size = sizeof(png_uint_32) * 4; 1176282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski strcpy((char*)unknowns[b_index].name, "npLb"); 1177282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski unknowns[b_index].data = (png_byte*) calloc(chunk_size, 1); 1178282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski memcpy(unknowns[b_index].data, &imageInfo.layoutBoundsLeft, chunk_size); 1179282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski unknowns[b_index].size = chunk_size; 1180282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 1181282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 1182282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski for (int i = 0; i < chunk_count; i++) { 1183282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski unknowns[i].location = PNG_HAVE_PLTE; 1184282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 1185282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski png_set_keep_unknown_chunks(write_ptr, PNG_HANDLE_CHUNK_ALWAYS, 1186282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski chunk_names, chunk_count); 1187282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski png_set_unknown_chunks(write_ptr, write_info, unknowns, chunk_count); 1188282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski#if PNG_LIBPNG_VER < 10600 1189282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski /* Deal with unknown chunk location bug in 1.5.x and earlier */ 1190282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski png_set_unknown_chunk_location(write_ptr, write_info, 0, PNG_HAVE_PLTE); 1191282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (imageInfo.haveLayoutBounds) { 1192282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski png_set_unknown_chunk_location(write_ptr, write_info, 1, PNG_HAVE_PLTE); 1193282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 1194282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski#endif 1195282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 1196282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 1197282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 1198282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski png_write_info(write_ptr, write_info); 1199282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 1200282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski png_bytepp rows; 1201282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (color_type == PNG_COLOR_TYPE_RGB || color_type == PNG_COLOR_TYPE_RGB_ALPHA) { 1202282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (color_type == PNG_COLOR_TYPE_RGB) { 1203282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski png_set_filler(write_ptr, 0, PNG_FILLER_AFTER); 1204282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 1205282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski rows = imageInfo.rows; 1206282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } else { 1207282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski rows = outRows; 1208282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 1209282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski png_write_image(write_ptr, rows); 1210282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 12112412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe if (kIsDebug) { 12122412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe printf("Final image data:\n"); 12132412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe dump_image(imageInfo.width, imageInfo.height, rows, color_type); 12142412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe } 1215282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 1216282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski png_write_end(write_ptr, write_info); 1217282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 1218282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski for (i = 0; i < (int) imageInfo.height; i++) { 1219282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski free(outRows[i]); 1220282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 1221282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski free(outRows); 1222282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski free(unknowns[0].data); 1223282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski free(unknowns[1].data); 122447cd8e921db73e894f94ec4729ade90da50996f5Chris Craik free(unknowns[2].data); 1225282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 1226282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski png_get_IHDR(write_ptr, write_info, &width, &height, 1227282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski &bit_depth, &color_type, &interlace_type, 1228282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski &compression_type, NULL); 1229282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 12302412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe if (kIsDebug) { 12312412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe printf("Image written: w=%d, h=%d, d=%d, colors=%d, inter=%d, comp=%d\n", 12322412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe (int)width, (int)height, bit_depth, color_type, interlace_type, 12332412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe compression_type); 12342412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe } 1235282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski} 1236282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 12372412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampestatus_t preProcessImage(const Bundle* bundle, const sp<AaptAssets>& /* assets */, 12382412f84064c26b643c722ce914a97c4ec7776c69Andreas Gampe const sp<AaptFile>& file, String8* /* outNewLeafName */) 1239282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski{ 1240282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski String8 ext(file->getPath().getPathExtension()); 1241282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 1242282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // We currently only process PNG images. 1243282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (strcmp(ext.string(), ".png") != 0) { 1244282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski return NO_ERROR; 1245282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 1246282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 1247282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // Example of renaming a file: 1248282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski //*outNewLeafName = file->getPath().getBasePath().getFileName(); 1249282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski //outNewLeafName->append(".nupng"); 1250282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 1251282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski String8 printableName(file->getPrintableSource()); 1252282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 1253282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (bundle->getVerbose()) { 1254282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski printf("Processing image: %s\n", printableName.string()); 1255282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 1256282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 1257282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski png_structp read_ptr = NULL; 1258282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski png_infop read_info = NULL; 1259282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski FILE* fp; 1260282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 1261282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski image_info imageInfo; 1262282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 1263282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski png_structp write_ptr = NULL; 1264282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski png_infop write_info = NULL; 1265282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 1266282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski status_t error = UNKNOWN_ERROR; 1267282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 1268282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski const size_t nameLen = file->getPath().length(); 1269282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 1270282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski fp = fopen(file->getSourceFile().string(), "rb"); 1271282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (fp == NULL) { 1272282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski fprintf(stderr, "%s: ERROR: Unable to open PNG file\n", printableName.string()); 1273282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski goto bail; 1274282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 1275282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 1276282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski read_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, 0, (png_error_ptr)NULL, 1277282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski (png_error_ptr)NULL); 1278282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (!read_ptr) { 1279282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski goto bail; 1280282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 1281282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 1282282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski read_info = png_create_info_struct(read_ptr); 1283282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (!read_info) { 1284282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski goto bail; 1285282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 1286282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 1287282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (setjmp(png_jmpbuf(read_ptr))) { 1288282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski goto bail; 1289282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 1290282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 1291282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski png_init_io(read_ptr, fp); 1292282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 1293282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski read_png(printableName.string(), read_ptr, read_info, &imageInfo); 1294282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 1295282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (nameLen > 6) { 1296282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski const char* name = file->getPath().string(); 1297282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (name[nameLen-5] == '9' && name[nameLen-6] == '.') { 1298282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (do_9patch(printableName.string(), &imageInfo) != NO_ERROR) { 1299282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski goto bail; 1300282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 1301282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 1302282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 1303282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 1304282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski write_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, 0, (png_error_ptr)NULL, 1305282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski (png_error_ptr)NULL); 1306282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (!write_ptr) 1307282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski { 1308282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski goto bail; 1309282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 1310282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 1311282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski write_info = png_create_info_struct(write_ptr); 1312282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (!write_info) 1313282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski { 1314282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski goto bail; 1315282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 1316282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 1317282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski png_set_write_fn(write_ptr, (void*)file.get(), 1318282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski png_write_aapt_file, png_flush_aapt_file); 1319282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 1320282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (setjmp(png_jmpbuf(write_ptr))) 1321282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski { 1322282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski goto bail; 1323282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 1324282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 1325282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski write_png(printableName.string(), write_ptr, write_info, imageInfo, 1326282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski bundle->getGrayscaleTolerance()); 1327282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 1328282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski error = NO_ERROR; 1329282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 1330282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (bundle->getVerbose()) { 1331282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski fseek(fp, 0, SEEK_END); 1332282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski size_t oldSize = (size_t)ftell(fp); 1333282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski size_t newSize = file->getSize(); 1334282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski float factor = ((float)newSize)/oldSize; 1335282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski int percent = (int)(factor*100); 1336282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski printf(" (processed image %s: %d%% size of source)\n", printableName.string(), percent); 1337282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 1338282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 1339282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinskibail: 1340282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (read_ptr) { 1341282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski png_destroy_read_struct(&read_ptr, &read_info, (png_infopp)NULL); 1342282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 1343282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (fp) { 1344282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski fclose(fp); 1345282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 1346282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (write_ptr) { 1347282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski png_destroy_write_struct(&write_ptr, &write_info); 1348282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 1349282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 1350282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (error != NO_ERROR) { 1351282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski fprintf(stderr, "ERROR: Failure processing PNG image %s\n", 1352282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski file->getPrintableSource().string()); 1353282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 1354282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski return error; 1355282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski} 1356282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 1357282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinskistatus_t preProcessImageToCache(const Bundle* bundle, const String8& source, const String8& dest) 1358282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski{ 1359282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski png_structp read_ptr = NULL; 1360282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski png_infop read_info = NULL; 1361282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 1362282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski FILE* fp; 1363282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 1364282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski image_info imageInfo; 1365282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 1366282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski png_structp write_ptr = NULL; 1367282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski png_infop write_info = NULL; 1368282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 1369282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski status_t error = UNKNOWN_ERROR; 1370282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 1371282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (bundle->getVerbose()) { 1372282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski printf("Processing image to cache: %s => %s\n", source.string(), dest.string()); 1373282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 1374282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 1375282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // Get a file handler to read from 1376282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski fp = fopen(source.string(),"rb"); 1377282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (fp == NULL) { 1378282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski fprintf(stderr, "%s ERROR: Unable to open PNG file\n", source.string()); 1379282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski return error; 1380282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 1381282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 1382282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // Call libpng to get a struct to read image data into 1383282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski read_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL); 1384282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (!read_ptr) { 1385282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski fclose(fp); 1386282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski png_destroy_read_struct(&read_ptr, &read_info,NULL); 1387282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski return error; 1388282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 1389282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 1390282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // Call libpng to get a struct to read image info into 1391282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski read_info = png_create_info_struct(read_ptr); 1392282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (!read_info) { 1393282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski fclose(fp); 1394282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski png_destroy_read_struct(&read_ptr, &read_info,NULL); 1395282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski return error; 1396282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 1397282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 1398282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // Set a jump point for libpng to long jump back to on error 1399282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (setjmp(png_jmpbuf(read_ptr))) { 1400282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski fclose(fp); 1401282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski png_destroy_read_struct(&read_ptr, &read_info,NULL); 1402282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski return error; 1403282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 1404282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 1405282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // Set up libpng to read from our file. 1406282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski png_init_io(read_ptr,fp); 1407282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 1408282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // Actually read data from the file 1409282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski read_png(source.string(), read_ptr, read_info, &imageInfo); 1410282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 1411282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // We're done reading so we can clean up 1412282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // Find old file size before releasing handle 1413282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski fseek(fp, 0, SEEK_END); 1414282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski size_t oldSize = (size_t)ftell(fp); 1415282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski fclose(fp); 1416282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski png_destroy_read_struct(&read_ptr, &read_info,NULL); 1417282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 1418282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // Check to see if we're dealing with a 9-patch 1419282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // If we are, process appropriately 1420282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (source.getBasePath().getPathExtension() == ".9") { 1421282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (do_9patch(source.string(), &imageInfo) != NO_ERROR) { 1422282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski return error; 1423282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 1424282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 1425282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 1426282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // Call libpng to create a structure to hold the processed image data 1427282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // that can be written to disk 1428282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski write_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL); 1429282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (!write_ptr) { 1430282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski png_destroy_write_struct(&write_ptr, &write_info); 1431282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski return error; 1432282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 1433282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 1434282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // Call libpng to create a structure to hold processed image info that can 1435282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // be written to disk 1436282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski write_info = png_create_info_struct(write_ptr); 1437282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (!write_info) { 1438282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski png_destroy_write_struct(&write_ptr, &write_info); 1439282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski return error; 1440282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 1441282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 1442282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // Open up our destination file for writing 1443282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski fp = fopen(dest.string(), "wb"); 1444282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (!fp) { 1445282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski fprintf(stderr, "%s ERROR: Unable to open PNG file\n", dest.string()); 1446282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski png_destroy_write_struct(&write_ptr, &write_info); 1447282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski return error; 1448282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 1449282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 1450282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // Set up libpng to write to our file 1451282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski png_init_io(write_ptr, fp); 1452282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 1453282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // Set up a jump for libpng to long jump back on on errors 1454282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (setjmp(png_jmpbuf(write_ptr))) { 1455282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski fclose(fp); 1456282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski png_destroy_write_struct(&write_ptr, &write_info); 1457282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski return error; 1458282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 1459282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 1460282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // Actually write out to the new png 1461282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski write_png(dest.string(), write_ptr, write_info, imageInfo, 1462282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski bundle->getGrayscaleTolerance()); 1463282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 1464282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (bundle->getVerbose()) { 1465282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // Find the size of our new file 1466282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski FILE* reader = fopen(dest.string(), "rb"); 1467282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski fseek(reader, 0, SEEK_END); 1468282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski size_t newSize = (size_t)ftell(reader); 1469282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski fclose(reader); 1470282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 1471282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski float factor = ((float)newSize)/oldSize; 1472282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski int percent = (int)(factor*100); 1473282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski printf(" (processed image to cache entry %s: %d%% size of source)\n", 1474282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski dest.string(), percent); 1475282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 1476282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 1477282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski //Clean up 1478282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski fclose(fp); 1479282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski png_destroy_write_struct(&write_ptr, &write_info); 1480282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 1481282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski return NO_ERROR; 1482282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski} 1483282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 1484e572c011feabf6319ba836cf5bc4c3baa0ba6a85Adam Lesinskistatus_t postProcessImage(const Bundle* bundle, const sp<AaptAssets>& assets, 1485282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski ResourceTable* table, const sp<AaptFile>& file) 1486282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski{ 1487282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski String8 ext(file->getPath().getPathExtension()); 1488282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 1489282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // At this point, now that we have all the resource data, all we need to 1490282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski // do is compile XML files. 1491282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski if (strcmp(ext.string(), ".xml") == 0) { 1492e572c011feabf6319ba836cf5bc4c3baa0ba6a85Adam Lesinski String16 resourceName(parseResourceName(file->getPath().getPathLeaf())); 1493e572c011feabf6319ba836cf5bc4c3baa0ba6a85Adam Lesinski return compileXmlFile(bundle, assets, resourceName, file, table); 1494282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 1495282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 1496282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski return NO_ERROR; 1497282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski} 1498