Lines Matching refs:page
78 void simple_ogg_page__init(ogg_page *page)
80 page->header = 0;
81 page->header_len = 0;
82 page->body = 0;
83 page->body_len = 0;
86 void simple_ogg_page__clear(ogg_page *page)
88 if(page->header)
89 free(page->header);
90 if(page->body)
91 free(page->body);
92 simple_ogg_page__init(page);
95 FLAC__bool simple_ogg_page__get_at(FLAC__StreamEncoder *encoder, FLAC__uint64 position, ogg_page *page, FLAC__StreamEncoderSeekCallback seek_callback, FLAC__StreamEncoderReadCallback read_callback, void *client_data)
102 FLAC__ASSERT(page->header == 0);
103 FLAC__ASSERT(page->header_len == 0);
104 FLAC__ASSERT(page->body == 0);
105 FLAC__ASSERT(page->body_len == 0);
107 /* move the stream pointer to the supposed beginning of the page */
116 /* allocate space for the page header */
117 if(0 == (page->header = safe_malloc_(OGG_MAX_HEADER_LEN))) {
122 /* read in the fixed part of the page header (up to but not including
124 if(!full_read_(encoder, page->header, OGG_HEADER_FIXED_PORTION_LEN, read_callback, client_data))
127 page->header_len = OGG_HEADER_FIXED_PORTION_LEN + page->header[26];
129 /* check to see if it's a correct, "simple" page (one packet only) */
131 memcmp(page->header, "OggS", 4) || /* doesn't start with OggS */
132 (page->header[5] & 0x01) || /* continued packet */
133 memcmp(page->header+6, "\0\0\0\0\0\0\0\0", 8) || /* granulepos is non-zero */
134 page->header[26] == 0 /* packet is 0-size */
141 if(!full_read_(encoder, page->header + OGG_HEADER_FIXED_PORTION_LEN, page->header[26], read_callback, client_data))
148 for(i = 0; i < (unsigned)page->header[26] - 1; i++) {
149 if(page->header[i + OGG_HEADER_FIXED_PORTION_LEN] != 255) {
155 page->body_len = 255 * i + page->header[i + OGG_HEADER_FIXED_PORTION_LEN];
158 /* allocate space for the page body */
159 if(0 == (page->body = safe_malloc_(page->body_len))) {
164 /* read in the page body */
165 if(!full_read_(encoder, page->body, page->body_len, read_callback, client_data))
169 memcpy(crc, page->header+22, 4);
170 ogg_page_checksum_set(page);
171 if(memcmp(crc, page->header+22, 4)) {
179 FLAC__bool simple_ogg_page__set_at(FLAC__StreamEncoder *encoder, FLAC__uint64 position, ogg_page *page, FLAC__StreamEncoderSeekCallback seek_callback, FLAC__StreamEncoderWriteCallback write_callback, void *client_data)
183 FLAC__ASSERT(page->header != 0);
184 FLAC__ASSERT(page->header_len != 0);
185 FLAC__ASSERT(page->body != 0);
186 FLAC__ASSERT(page->body_len != 0);
188 /* move the stream pointer to the supposed beginning of the page */
197 ogg_page_checksum_set(page);
199 /* re-write the page */
200 if(write_callback((FLAC__StreamEncoder*)encoder, page->header, page->header_len, 0, 0, client_data) != FLAC__STREAM_ENCODER_WRITE_STATUS_OK) {
204 if(write_callback((FLAC__StreamEncoder*)encoder, page->body, page->body_len, 0, 0, client_data) != FLAC__STREAM_ENCODER_WRITE_STATUS_OK) {
