1f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org/* 2f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * jdapimin.c 3f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * 4f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * Copyright (C) 1994-1998, Thomas G. Lane. 5f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * This file is part of the Independent JPEG Group's software. 6f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * For conditions of distribution and use, see the accompanying README file. 7f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * 8f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * This file contains application interface code for the decompression half 9f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * of the JPEG library. These are the "minimum" API routines that may be 10f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * needed in either the normal full-decompression case or the 11f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * transcoding-only case. 12f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * 13f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * Most of the routines intended to be called directly by an application 14f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * are in this file or in jdapistd.c. But also see jcomapi.c for routines 15f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * shared by compression and decompression, and jdtrans.c for the transcoding 16f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * case. 17f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org */ 18f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 19f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org#define JPEG_INTERNALS 20f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org#include "jinclude.h" 21f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org#include "jpeglib.h" 22f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 23f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 24f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org/* 25f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * Initialization of a JPEG decompression object. 26f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * The error manager must already be set up (in case memory manager fails). 27f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org */ 28f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 29f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.orgGLOBAL(void) 30f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.orgjpeg_CreateDecompress (j_decompress_ptr cinfo, int version, size_t structsize) 31f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org{ 32f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org int i; 33f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 34f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org /* Guard against version mismatches between library and caller. */ 35f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org cinfo->mem = NULL; /* so jpeg_destroy knows mem mgr not called */ 36f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org if (version != JPEG_LIB_VERSION) 37f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org ERREXIT2(cinfo, JERR_BAD_LIB_VERSION, JPEG_LIB_VERSION, version); 38f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org if (structsize != SIZEOF(struct jpeg_decompress_struct)) 39f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org ERREXIT2(cinfo, JERR_BAD_STRUCT_SIZE, 40f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org (int) SIZEOF(struct jpeg_decompress_struct), (int) structsize); 41f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 42f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org /* For debugging purposes, we zero the whole master structure. 43f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * But the application has already set the err pointer, and may have set 44f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * client_data, so we have to save and restore those fields. 45f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * Note: if application hasn't set client_data, tools like Purify may 46f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * complain here. 47f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org */ 48f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org { 49f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org struct jpeg_error_mgr * err = cinfo->err; 50f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org void * client_data = cinfo->client_data; /* ignore Purify complaint here */ 51f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org MEMZERO(cinfo, SIZEOF(struct jpeg_decompress_struct)); 52f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org cinfo->err = err; 53f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org cinfo->client_data = client_data; 54f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org } 55f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org cinfo->is_decompressor = TRUE; 56f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 57f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org /* Initialize a memory manager instance for this object */ 58f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org jinit_memory_mgr((j_common_ptr) cinfo); 59f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 60f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org /* Zero out pointers to permanent structures. */ 61f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org cinfo->progress = NULL; 62f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org cinfo->src = NULL; 63f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 64f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org for (i = 0; i < NUM_QUANT_TBLS; i++) 65f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org cinfo->quant_tbl_ptrs[i] = NULL; 66f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 67f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org for (i = 0; i < NUM_HUFF_TBLS; i++) { 68f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org cinfo->dc_huff_tbl_ptrs[i] = NULL; 69f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org cinfo->ac_huff_tbl_ptrs[i] = NULL; 70f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org } 71f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 72f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org /* Initialize marker processor so application can override methods 73f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * for COM, APPn markers before calling jpeg_read_header. 74f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org */ 75f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org cinfo->marker_list = NULL; 76f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org jinit_marker_reader(cinfo); 77f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 78f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org /* And initialize the overall input controller. */ 79f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org jinit_input_controller(cinfo); 80f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 81f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org /* OK, I'm ready */ 82f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org cinfo->global_state = DSTATE_START; 83f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org} 84f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 85f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 86f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org/* 87f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * Destruction of a JPEG decompression object 88f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org */ 89f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 90f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.orgGLOBAL(void) 91f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.orgjpeg_destroy_decompress (j_decompress_ptr cinfo) 92f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org{ 93f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org jpeg_destroy((j_common_ptr) cinfo); /* use common routine */ 94f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org} 95f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 96f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 97f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org/* 98f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * Abort processing of a JPEG decompression operation, 99f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * but don't destroy the object itself. 100f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org */ 101f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 102f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.orgGLOBAL(void) 103f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.orgjpeg_abort_decompress (j_decompress_ptr cinfo) 104f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org{ 105f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org jpeg_abort((j_common_ptr) cinfo); /* use common routine */ 106f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org} 107f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 108f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 109f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org/* 110f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * Set default decompression parameters. 111f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org */ 112f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 113f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.orgLOCAL(void) 114f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.orgdefault_decompress_parms (j_decompress_ptr cinfo) 115f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org{ 116f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org /* Guess the input colorspace, and set output colorspace accordingly. */ 117f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org /* (Wish JPEG committee had provided a real way to specify this...) */ 118f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org /* Note application may override our guesses. */ 119f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org switch (cinfo->num_components) { 120f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org case 1: 121f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org cinfo->jpeg_color_space = JCS_GRAYSCALE; 122f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org cinfo->out_color_space = JCS_GRAYSCALE; 123f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org break; 124f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 125f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org case 3: 126f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org if (cinfo->saw_JFIF_marker) { 127f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org cinfo->jpeg_color_space = JCS_YCbCr; /* JFIF implies YCbCr */ 128f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org } else if (cinfo->saw_Adobe_marker) { 129f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org switch (cinfo->Adobe_transform) { 130f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org case 0: 131f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org cinfo->jpeg_color_space = JCS_RGB; 132f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org break; 133f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org case 1: 134f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org cinfo->jpeg_color_space = JCS_YCbCr; 135f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org break; 136f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org default: 137f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org WARNMS1(cinfo, JWRN_ADOBE_XFORM, cinfo->Adobe_transform); 138f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org cinfo->jpeg_color_space = JCS_YCbCr; /* assume it's YCbCr */ 139f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org break; 140f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org } 141f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org } else { 142f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org /* Saw no special markers, try to guess from the component IDs */ 143f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org int cid0 = cinfo->comp_info[0].component_id; 144f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org int cid1 = cinfo->comp_info[1].component_id; 145f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org int cid2 = cinfo->comp_info[2].component_id; 146f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 147f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org if (cid0 == 1 && cid1 == 2 && cid2 == 3) 148f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org cinfo->jpeg_color_space = JCS_YCbCr; /* assume JFIF w/out marker */ 149f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org else if (cid0 == 82 && cid1 == 71 && cid2 == 66) 150f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org cinfo->jpeg_color_space = JCS_RGB; /* ASCII 'R', 'G', 'B' */ 151f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org else { 152f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org TRACEMS3(cinfo, 1, JTRC_UNKNOWN_IDS, cid0, cid1, cid2); 153f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org cinfo->jpeg_color_space = JCS_YCbCr; /* assume it's YCbCr */ 154f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org } 155f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org } 156f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org /* Always guess RGB is proper output colorspace. */ 157f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org cinfo->out_color_space = JCS_RGB; 158f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org break; 159f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 160f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org case 4: 161f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org if (cinfo->saw_Adobe_marker) { 162f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org switch (cinfo->Adobe_transform) { 163f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org case 0: 164f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org cinfo->jpeg_color_space = JCS_CMYK; 165f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org break; 166f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org case 2: 167f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org cinfo->jpeg_color_space = JCS_YCCK; 168f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org break; 169f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org default: 170f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org WARNMS1(cinfo, JWRN_ADOBE_XFORM, cinfo->Adobe_transform); 171f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org cinfo->jpeg_color_space = JCS_YCCK; /* assume it's YCCK */ 172f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org break; 173f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org } 174f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org } else { 175f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org /* No special markers, assume straight CMYK. */ 176f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org cinfo->jpeg_color_space = JCS_CMYK; 177f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org } 178f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org cinfo->out_color_space = JCS_CMYK; 179f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org break; 180f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 181f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org default: 182f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org cinfo->jpeg_color_space = JCS_UNKNOWN; 183f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org cinfo->out_color_space = JCS_UNKNOWN; 184f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org break; 185f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org } 186f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 187f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org /* Set defaults for other decompression parameters. */ 188f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org cinfo->scale_num = 1; /* 1:1 scaling */ 189f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org cinfo->scale_denom = 1; 190f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org cinfo->output_gamma = 1.0; 191f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org cinfo->buffered_image = FALSE; 192f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org cinfo->raw_data_out = FALSE; 193f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org cinfo->dct_method = JDCT_DEFAULT; 194f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org cinfo->do_fancy_upsampling = TRUE; 195f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org cinfo->do_block_smoothing = TRUE; 196f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org cinfo->quantize_colors = FALSE; 197f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org /* We set these in case application only sets quantize_colors. */ 198f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org cinfo->dither_mode = JDITHER_FS; 199f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org#ifdef QUANT_2PASS_SUPPORTED 200f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org cinfo->two_pass_quantize = TRUE; 201f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org#else 202f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org cinfo->two_pass_quantize = FALSE; 203f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org#endif 204f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org cinfo->desired_number_of_colors = 256; 205f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org cinfo->colormap = NULL; 206f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org /* Initialize for no mode change in buffered-image mode. */ 207f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org cinfo->enable_1pass_quant = FALSE; 208f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org cinfo->enable_external_quant = FALSE; 209f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org cinfo->enable_2pass_quant = FALSE; 210f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org} 211f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 212f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 213f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org/* 214f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * Decompression startup: read start of JPEG datastream to see what's there. 215f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * Need only initialize JPEG object and supply a data source before calling. 216f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * 217f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * This routine will read as far as the first SOS marker (ie, actual start of 218f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * compressed data), and will save all tables and parameters in the JPEG 219f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * object. It will also initialize the decompression parameters to default 220f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * values, and finally return JPEG_HEADER_OK. On return, the application may 221f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * adjust the decompression parameters and then call jpeg_start_decompress. 222f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * (Or, if the application only wanted to determine the image parameters, 223f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * the data need not be decompressed. In that case, call jpeg_abort or 224f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * jpeg_destroy to release any temporary space.) 225f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * If an abbreviated (tables only) datastream is presented, the routine will 226f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * return JPEG_HEADER_TABLES_ONLY upon reaching EOI. The application may then 227f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * re-use the JPEG object to read the abbreviated image datastream(s). 228f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * It is unnecessary (but OK) to call jpeg_abort in this case. 229f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * The JPEG_SUSPENDED return code only occurs if the data source module 230f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * requests suspension of the decompressor. In this case the application 231f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * should load more source data and then re-call jpeg_read_header to resume 232f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * processing. 233f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * If a non-suspending data source is used and require_image is TRUE, then the 234f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * return code need not be inspected since only JPEG_HEADER_OK is possible. 235f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * 236f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * This routine is now just a front end to jpeg_consume_input, with some 237f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * extra error checking. 238f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org */ 239f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 240f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.orgGLOBAL(int) 241f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.orgjpeg_read_header (j_decompress_ptr cinfo, boolean require_image) 242f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org{ 243f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org int retcode; 244f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 245f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org if (cinfo->global_state != DSTATE_START && 246f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org cinfo->global_state != DSTATE_INHEADER) 247f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state); 248f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 249f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org retcode = jpeg_consume_input(cinfo); 250f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 251f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org switch (retcode) { 252f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org case JPEG_REACHED_SOS: 253f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org retcode = JPEG_HEADER_OK; 254f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org break; 255f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org case JPEG_REACHED_EOI: 256f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org if (require_image) /* Complain if application wanted an image */ 257f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org ERREXIT(cinfo, JERR_NO_IMAGE); 258f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org /* Reset to start state; it would be safer to require the application to 259f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * call jpeg_abort, but we can't change it now for compatibility reasons. 260f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * A side effect is to free any temporary memory (there shouldn't be any). 261f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org */ 262f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org jpeg_abort((j_common_ptr) cinfo); /* sets state = DSTATE_START */ 263f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org retcode = JPEG_HEADER_TABLES_ONLY; 264f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org break; 265f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org case JPEG_SUSPENDED: 266f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org /* no work */ 267f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org break; 268f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org } 269f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 270f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org return retcode; 271f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org} 272f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 273f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 274f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org/* 275f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * Consume data in advance of what the decompressor requires. 276f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * This can be called at any time once the decompressor object has 277f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * been created and a data source has been set up. 278f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * 279f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * This routine is essentially a state machine that handles a couple 280f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * of critical state-transition actions, namely initial setup and 281f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * transition from header scanning to ready-for-start_decompress. 282f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * All the actual input is done via the input controller's consume_input 283f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * method. 284f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org */ 285f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 286f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.orgGLOBAL(int) 287f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.orgjpeg_consume_input (j_decompress_ptr cinfo) 288f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org{ 289f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org int retcode = JPEG_SUSPENDED; 290f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 291f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org /* NB: every possible DSTATE value should be listed in this switch */ 292f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org switch (cinfo->global_state) { 293f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org case DSTATE_START: 294f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org /* Start-of-datastream actions: reset appropriate modules */ 295f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org (*cinfo->inputctl->reset_input_controller) (cinfo); 296f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org /* Initialize application's data source module */ 297f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org (*cinfo->src->init_source) (cinfo); 298f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org cinfo->global_state = DSTATE_INHEADER; 299f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org /*FALLTHROUGH*/ 300f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org case DSTATE_INHEADER: 301f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org retcode = (*cinfo->inputctl->consume_input) (cinfo); 302f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org if (retcode == JPEG_REACHED_SOS) { /* Found SOS, prepare to decompress */ 303f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org /* Set up default parameters based on header data */ 304f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org default_decompress_parms(cinfo); 305f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org /* Set global state: ready for start_decompress */ 306f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org cinfo->global_state = DSTATE_READY; 307f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org } 308f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org break; 309f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org case DSTATE_READY: 310f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org /* Can't advance past first SOS until start_decompress is called */ 311f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org retcode = JPEG_REACHED_SOS; 312f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org break; 313f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org case DSTATE_PRELOAD: 314f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org case DSTATE_PRESCAN: 315f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org case DSTATE_SCANNING: 316f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org case DSTATE_RAW_OK: 317f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org case DSTATE_BUFIMAGE: 318f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org case DSTATE_BUFPOST: 319f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org case DSTATE_STOPPING: 320f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org retcode = (*cinfo->inputctl->consume_input) (cinfo); 321f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org break; 322f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org default: 323f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state); 324f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org } 325f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org return retcode; 326f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org} 327f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 328f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 329f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org/* 330f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * Have we finished reading the input file? 331f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org */ 332f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 333f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.orgGLOBAL(boolean) 334f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.orgjpeg_input_complete (j_decompress_ptr cinfo) 335f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org{ 336f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org /* Check for valid jpeg object */ 337f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org if (cinfo->global_state < DSTATE_START || 338f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org cinfo->global_state > DSTATE_STOPPING) 339f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state); 340f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org return cinfo->inputctl->eoi_reached; 341f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org} 342f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 343f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 344f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org/* 345f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * Is there more than one scan? 346f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org */ 347f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 348f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.orgGLOBAL(boolean) 349f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.orgjpeg_has_multiple_scans (j_decompress_ptr cinfo) 350f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org{ 351f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org /* Only valid after jpeg_read_header completes */ 352f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org if (cinfo->global_state < DSTATE_READY || 353f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org cinfo->global_state > DSTATE_STOPPING) 354f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state); 355f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org return cinfo->inputctl->has_multiple_scans; 356f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org} 357f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 358f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 359f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org/* 360f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * Finish JPEG decompression. 361f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * 362f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * This will normally just verify the file trailer and release temp storage. 363f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * 364f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * Returns FALSE if suspended. The return value need be inspected only if 365f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * a suspending data source is used. 366f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org */ 367f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 368f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.orgGLOBAL(boolean) 369f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.orgjpeg_finish_decompress (j_decompress_ptr cinfo) 370f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org{ 371f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org if ((cinfo->global_state == DSTATE_SCANNING || 372f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org cinfo->global_state == DSTATE_RAW_OK) && ! cinfo->buffered_image) { 373f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org /* Terminate final pass of non-buffered mode */ 374f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org if (cinfo->output_scanline < cinfo->output_height) 375f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org ERREXIT(cinfo, JERR_TOO_LITTLE_DATA); 376f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org (*cinfo->master->finish_output_pass) (cinfo); 377f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org cinfo->global_state = DSTATE_STOPPING; 378f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org } else if (cinfo->global_state == DSTATE_BUFIMAGE) { 379f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org /* Finishing after a buffered-image operation */ 380f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org cinfo->global_state = DSTATE_STOPPING; 381f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org } else if (cinfo->global_state != DSTATE_STOPPING) { 382f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org /* STOPPING = repeat call after a suspension, anything else is error */ 383f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state); 384f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org } 385f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org /* Read until EOI */ 386f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org while (! cinfo->inputctl->eoi_reached) { 387f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org if ((*cinfo->inputctl->consume_input) (cinfo) == JPEG_SUSPENDED) 388f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org return FALSE; /* Suspend, come back later */ 389f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org } 390f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org /* Do final cleanup */ 391f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org (*cinfo->src->term_source) (cinfo); 392f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org /* We can use jpeg_abort to release memory and reset global_state */ 393f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org jpeg_abort((j_common_ptr) cinfo); 394f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org return TRUE; 395f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org} 396