19f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project/* 29f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * jdatasrc.c 39f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * 49f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * Copyright (C) 1994-1996, Thomas G. Lane. 59f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * This file is part of the Independent JPEG Group's software. 69f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * For conditions of distribution and use, see the accompanying README file. 79f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * 89f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * This file contains decompression data source routines for the case of 99f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * reading JPEG data from a file (or any stdio stream). While these routines 109f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * are sufficient for most applications, some will want to use a different 119f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * source manager. 129f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * IMPORTANT: we assume that fread() will correctly transcribe an array of 139f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * JOCTETs from 8-bit-wide elements on external storage. If char is wider 149f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * than 8 bits on your machine, you may need to do some tweaking. 159f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project */ 169f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 179f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project/* this is not a core library module, so it doesn't define JPEG_INTERNALS */ 189f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project#include "jinclude.h" 199f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project#include "jpeglib.h" 209f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project#include "jerror.h" 219f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 229f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 239f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project/* Expanded data source object for stdio input */ 249f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 259f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Projecttypedef struct { 269f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project struct jpeg_source_mgr pub; /* public fields */ 279f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 289f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project FILE * infile; /* source stream */ 299f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project JOCTET * buffer; /* start of buffer */ 309f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project boolean start_of_file; /* have we gotten any data yet? */ 319f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project} my_source_mgr; 329f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 339f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Projecttypedef my_source_mgr * my_src_ptr; 349f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 359f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project#define INPUT_BUF_SIZE 4096 /* choose an efficiently fread'able size */ 369f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 379f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 389f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project/* 399f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * Initialize source --- called by jpeg_read_header 409f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * before any data is actually read. 419f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project */ 429f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 439f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source ProjectMETHODDEF(void) 449f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Projectinit_source (j_decompress_ptr cinfo) 459f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project{ 469f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project my_src_ptr src = (my_src_ptr) cinfo->src; 479f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 489f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project /* We reset the empty-input-file flag for each image, 499f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * but we don't clear the input buffer. 509f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * This is correct behavior for reading a series of images from one source. 519f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project */ 529f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project src->start_of_file = TRUE; 539f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project} 549f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 559f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 569f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project/* 579f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * Fill the input buffer --- called whenever buffer is emptied. 589f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * 599f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * In typical applications, this should read fresh data into the buffer 609f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * (ignoring the current state of next_input_byte & bytes_in_buffer), 619f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * reset the pointer & count to the start of the buffer, and return TRUE 629f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * indicating that the buffer has been reloaded. It is not necessary to 639f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * fill the buffer entirely, only to obtain at least one more byte. 649f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * 659f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * There is no such thing as an EOF return. If the end of the file has been 669f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * reached, the routine has a choice of ERREXIT() or inserting fake data into 679f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * the buffer. In most cases, generating a warning message and inserting a 689f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * fake EOI marker is the best course of action --- this will allow the 699f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * decompressor to output however much of the image is there. However, 709f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * the resulting error message is misleading if the real problem is an empty 719f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * input file, so we handle that case specially. 729f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * 739f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * In applications that need to be able to suspend compression due to input 749f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * not being available yet, a FALSE return indicates that no more data can be 759f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * obtained right now, but more may be forthcoming later. In this situation, 769f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * the decompressor will return to its caller (with an indication of the 779f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * number of scanlines it has read, if any). The application should resume 789f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * decompression after it has loaded more data into the input buffer. Note 799f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * that there are substantial restrictions on the use of suspension --- see 809f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * the documentation. 819f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * 829f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * When suspending, the decompressor will back up to a convenient restart point 839f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * (typically the start of the current MCU). next_input_byte & bytes_in_buffer 849f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * indicate where the restart point will be if the current call returns FALSE. 859f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * Data beyond this point must be rescanned after resumption, so move it to 869f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * the front of the buffer rather than discarding it. 879f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project */ 889f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 899f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source ProjectMETHODDEF(boolean) 909f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Projectfill_input_buffer (j_decompress_ptr cinfo) 919f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project{ 929f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project my_src_ptr src = (my_src_ptr) cinfo->src; 939f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project size_t nbytes; 949f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 959f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project nbytes = JFREAD(src->infile, src->buffer, INPUT_BUF_SIZE); 969f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 979f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project if (nbytes <= 0) { 989f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project if (src->start_of_file) /* Treat empty input file as fatal error */ 999f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project ERREXIT(cinfo, JERR_INPUT_EMPTY); 1009f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project WARNMS(cinfo, JWRN_JPEG_EOF); 1019f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project /* Insert a fake EOI marker */ 1029f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project src->buffer[0] = (JOCTET) 0xFF; 1039f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project src->buffer[1] = (JOCTET) JPEG_EOI; 1049f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project nbytes = 2; 1059f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project } 1069f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 1079f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project src->pub.next_input_byte = src->buffer; 1089f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project src->pub.bytes_in_buffer = nbytes; 1099f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project src->start_of_file = FALSE; 1109f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 1119f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project return TRUE; 1129f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project} 1139f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 1149f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 1159f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project/* 1169f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * Skip data --- used to skip over a potentially large amount of 1179f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * uninteresting data (such as an APPn marker). 1189f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * 1199f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * Writers of suspendable-input applications must note that skip_input_data 1209f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * is not granted the right to give a suspension return. If the skip extends 1219f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * beyond the data currently in the buffer, the buffer can be marked empty so 1229f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * that the next read will cause a fill_input_buffer call that can suspend. 1239f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * Arranging for additional bytes to be discarded before reloading the input 1249f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * buffer is the application writer's problem. 1259f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project */ 1269f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 1279f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source ProjectMETHODDEF(void) 1289f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Projectskip_input_data (j_decompress_ptr cinfo, long num_bytes) 1299f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project{ 1309f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project my_src_ptr src = (my_src_ptr) cinfo->src; 1319f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 1329f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project /* Just a dumb implementation for now. Could use fseek() except 1339f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * it doesn't work on pipes. Not clear that being smart is worth 1349f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * any trouble anyway --- large skips are infrequent. 1359f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project */ 1369f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project if (num_bytes > 0) { 1379f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project while (num_bytes > (long) src->pub.bytes_in_buffer) { 1389f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project num_bytes -= (long) src->pub.bytes_in_buffer; 1399f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project (void) fill_input_buffer(cinfo); 1409f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project /* note we assume that fill_input_buffer will never return FALSE, 1419f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * so suspension need not be handled. 1429f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project */ 1439f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project } 1449f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project src->pub.next_input_byte += (size_t) num_bytes; 1459f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project src->pub.bytes_in_buffer -= (size_t) num_bytes; 1469f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project } 1479f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project} 1489f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 1499f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 1509f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project/* 1519f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * An additional method that can be provided by data source modules is the 1529f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * resync_to_restart method for error recovery in the presence of RST markers. 1539f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * For the moment, this source module just uses the default resync method 1549f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * provided by the JPEG library. That method assumes that no backtracking 1559f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * is possible. 1569f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project */ 1579f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 1589f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 1599f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project/* 1609f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * Terminate source --- called by jpeg_finish_decompress 1619f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * after all data has been read. Often a no-op. 1629f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * 1639f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * NB: *not* called by jpeg_abort or jpeg_destroy; surrounding 1649f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * application must deal with any cleanup that should happen even 1659f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * for error exit. 1669f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project */ 1679f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 1689f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source ProjectMETHODDEF(void) 1699f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Projectterm_source (j_decompress_ptr cinfo) 1709f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project{ 1719f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project /* no work necessary here */ 1729f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project} 1739f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 1749f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 1759f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project/* 1769f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * Prepare for input from a stdio stream. 1779f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * The caller must have already opened the stream, and is responsible 1789f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * for closing it after finishing decompression. 1799f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project */ 1809f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 1819f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source ProjectGLOBAL(void) 1829f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Projectjpeg_stdio_src (j_decompress_ptr cinfo, FILE * infile) 1839f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project{ 1849f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project my_src_ptr src; 1859f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 1869f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project /* The source object and input buffer are made permanent so that a series 1879f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * of JPEG images can be read from the same file by calling jpeg_stdio_src 1889f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * only before the first one. (If we discarded the buffer at the end of 1899f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * one image, we'd likely lose the start of the next one.) 1909f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * This makes it unsafe to use this manager and a different source 1919f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * manager serially with the same JPEG object. Caveat programmer. 1929f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project */ 1939f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project if (cinfo->src == NULL) { /* first time for this JPEG object? */ 1949f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project cinfo->src = (struct jpeg_source_mgr *) 1959f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_PERMANENT, 1969f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project SIZEOF(my_source_mgr)); 1979f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project src = (my_src_ptr) cinfo->src; 1989f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project src->buffer = (JOCTET *) 1999f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_PERMANENT, 2009f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project INPUT_BUF_SIZE * SIZEOF(JOCTET)); 2019f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project } 2029f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 2039f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project src = (my_src_ptr) cinfo->src; 2049f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project src->pub.init_source = init_source; 2059f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project src->pub.fill_input_buffer = fill_input_buffer; 2069f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project src->pub.skip_input_data = skip_input_data; 2079f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project src->pub.resync_to_restart = jpeg_resync_to_restart; /* use default method */ 2089f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project src->pub.term_source = term_source; 2099f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project src->infile = infile; 2109f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project src->pub.bytes_in_buffer = 0; /* forces fill_input_buffer on first read */ 2119f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project src->pub.next_input_byte = NULL; /* until buffer loaded */ 2129f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project} 213