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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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