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Side by Side Diff: src/images/SkJpegUtility.cpp

Issue 23464068: Use the default resync_to_restart in jpeg. (Closed) Base URL: https://skia.googlecode.com/svn/trunk
Patch Set: Created 7 years, 3 months ago
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1 /* 1 /*
2 * Copyright 2010 The Android Open Source Project 2 * Copyright 2010 The Android Open Source Project
3 * 3 *
4 * Use of this source code is governed by a BSD-style license that can be 4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file. 5 * found in the LICENSE file.
6 */ 6 */
7 7
8 8
9 #include "SkJpegUtility.h" 9 #include "SkJpegUtility.h"
10 10
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83 bytesToSkip -= bytes; 83 bytesToSkip -= bytes;
84 } 84 }
85 src->next_input_byte = (const JOCTET*)src->fBuffer; 85 src->next_input_byte = (const JOCTET*)src->fBuffer;
86 src->bytes_in_buffer = 0; 86 src->bytes_in_buffer = 0;
87 } else { 87 } else {
88 src->next_input_byte += num_bytes; 88 src->next_input_byte += num_bytes;
89 src->bytes_in_buffer -= num_bytes; 89 src->bytes_in_buffer -= num_bytes;
90 } 90 }
91 } 91 }
92 92
93 static boolean sk_resync_to_restart(j_decompress_ptr cinfo, int desired) {
94 skjpeg_source_mgr* src = (skjpeg_source_mgr*)cinfo->src;
95
96 // what is the desired param for???
97
98 if (!src->fStream->rewind()) {
99 SkDebugf("xxxxxxxxxxxxxx failure to rewind\n");
100 cinfo->err->error_exit((j_common_ptr)cinfo);
101 return FALSE;
102 }
103 src->next_input_byte = (const JOCTET*)src->fBuffer;
104 src->bytes_in_buffer = 0;
105 return TRUE;
106 }
107
108 static void sk_term_source(j_decompress_ptr /*cinfo*/) {} 93 static void sk_term_source(j_decompress_ptr /*cinfo*/) {}
109 94
110 95
111 /////////////////////////////////////////////////////////////////////////////// 96 ///////////////////////////////////////////////////////////////////////////////
112 97
113 skjpeg_source_mgr::skjpeg_source_mgr(SkStream* stream, SkImageDecoder* decoder) 98 skjpeg_source_mgr::skjpeg_source_mgr(SkStream* stream, SkImageDecoder* decoder)
114 : fStream(SkRef(stream)) 99 : fStream(SkRef(stream))
115 , fDecoder(decoder) { 100 , fDecoder(decoder) {
116 101
117 init_source = sk_init_source; 102 init_source = sk_init_source;
118 fill_input_buffer = sk_fill_input_buffer; 103 fill_input_buffer = sk_fill_input_buffer;
119 skip_input_data = sk_skip_input_data; 104 skip_input_data = sk_skip_input_data;
120 resync_to_restart = sk_resync_to_restart; 105 resync_to_restart = jpeg_resync_to_restart;
121 term_source = sk_term_source; 106 term_source = sk_term_source;
122 #ifdef SK_BUILD_FOR_ANDROID 107 #ifdef SK_BUILD_FOR_ANDROID
123 seek_input_data = sk_seek_input_data; 108 seek_input_data = sk_seek_input_data;
124 #endif 109 #endif
125 // SkDebugf("**************** use memorybase %p %d\n", fMemoryBase, fMemoryBa seSize); 110 // SkDebugf("**************** use memorybase %p %d\n", fMemoryBase, fMemoryBa seSize);
126 } 111 }
127 112
128 skjpeg_source_mgr::~skjpeg_source_mgr() { 113 skjpeg_source_mgr::~skjpeg_source_mgr() {
129 SkSafeUnref(fStream); 114 SkSafeUnref(fStream);
130 } 115 }
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176 void skjpeg_error_exit(j_common_ptr cinfo) { 161 void skjpeg_error_exit(j_common_ptr cinfo) {
177 skjpeg_error_mgr* error = (skjpeg_error_mgr*)cinfo->err; 162 skjpeg_error_mgr* error = (skjpeg_error_mgr*)cinfo->err;
178 163
179 (*error->output_message) (cinfo); 164 (*error->output_message) (cinfo);
180 165
181 /* Let the memory manager delete any temp files before we die */ 166 /* Let the memory manager delete any temp files before we die */
182 jpeg_destroy(cinfo); 167 jpeg_destroy(cinfo);
183 168
184 longjmp(error->fJmpBuf, -1); 169 longjmp(error->fJmpBuf, -1);
185 } 170 }
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