Lines Matching refs:ape
145 APEContext *ape = s->priv_data;
154 ape->junklength = avio_tell(pb);
160 ape->fileversion = avio_rl16(pb);
162 if (ape->fileversion < APE_MIN_VERSION || ape->fileversion > APE_MAX_VERSION) {
164 ape->fileversion / 1000, (ape->fileversion % 1000) / 10);
168 if (ape->fileversion >= 3980) {
169 ape->padding1 = avio_rl16(pb);
170 ape->descriptorlength = avio_rl32(pb);
171 ape->headerlength = avio_rl32(pb);
172 ape->seektablelength = avio_rl32(pb);
173 ape->wavheaderlength = avio_rl32(pb);
174 ape->audiodatalength = avio_rl32(pb);
175 ape->audiodatalength_high = avio_rl32(pb);
176 ape->wavtaillength = avio_rl32(pb);
177 avio_read(pb, ape->md5, 16);
181 if (ape->descriptorlength > 52)
182 avio_skip(pb, ape->descriptorlength - 52);
185 ape->compressiontype = avio_rl16(pb);
186 ape->formatflags = avio_rl16(pb);
187 ape->blocksperframe = avio_rl32(pb);
188 ape->finalframeblocks = avio_rl32(pb);
189 ape->totalframes = avio_rl32(pb);
190 ape->bps = avio_rl16(pb);
191 ape->channels = avio_rl16(pb);
192 ape->samplerate = avio_rl32(pb);
194 ape->descriptorlength = 0;
195 ape->headerlength = 32;
197 ape->compressiontype = avio_rl16(pb);
198 ape->formatflags = avio_rl16(pb);
199 ape->channels = avio_rl16(pb);
200 ape->samplerate = avio_rl32(pb);
201 ape->wavheaderlength = avio_rl32(pb);
202 ape->wavtaillength = avio_rl32(pb);
203 ape->totalframes = avio_rl32(pb);
204 ape->finalframeblocks = avio_rl32(pb);
206 if (ape->formatflags & MAC_FORMAT_FLAG_HAS_PEAK_LEVEL) {
208 ape->headerlength += 4;
211 if (ape->formatflags & MAC_FORMAT_FLAG_HAS_SEEK_ELEMENTS) {
212 ape->seektablelength = avio_rl32(pb);
213 ape->headerlength += 4;
214 ape->seektablelength *= sizeof(int32_t);
216 ape->seektablelength = ape->totalframes * sizeof(int32_t);
218 if (ape->formatflags & MAC_FORMAT_FLAG_8_BIT)
219 ape->bps = 8;
220 else if (ape->formatflags & MAC_FORMAT_FLAG_24_BIT)
221 ape->bps = 24;
223 ape->bps = 16;
225 if (ape->fileversion >= 3950)
226 ape->blocksperframe = 73728 * 4;
227 else if (ape->fileversion >= 3900 || (ape->fileversion >= 3800 && ape->compressiontype >= 4000))
228 ape->blocksperframe = 73728;
230 ape->blocksperframe = 9216;
233 if (!(ape->formatflags & MAC_FORMAT_FLAG_CREATE_WAV_HEADER))
234 avio_skip(pb, ape->wavheaderlength);
237 if(!ape->totalframes || pb->eof_reached){
241 if(ape->totalframes > UINT_MAX / sizeof(APEFrame)){
243 ape->totalframes);
246 if (ape->seektablelength / sizeof(uint32_t) < ape->totalframes) {
249 ape->seektablelength / sizeof(uint32_t), ape->totalframes);
252 ape->frames = av_malloc_array(ape->totalframes, sizeof(APEFrame));
253 if(!ape->frames)
255 ape->firstframe = ape->junklength + ape->descriptorlength + ape->headerlength + ape->seektablelength + ape->wavheaderlength;
256 if (ape->fileversion < 3810)
257 ape->firstframe += ape->totalframes;
258 ape->currentframe = 0;
261 ape->totalsamples = ape->finalframeblocks;
262 if (ape->totalframes > 1)
263 ape->totalsamples += ape->blocksperframe * (ape->totalframes - 1);
265 ape->frames[0].pos = ape->firstframe;
266 ape->frames[0].nblocks = ape->blocksperframe;
267 ape->frames[0].skip = 0;
269 for (i = 1; i < ape->totalframes; i++) {
271 ape->frames[i].pos = seektable_entry + ape->junklength;
272 ape->frames[i].nblocks = ape->blocksperframe;
273 ape->frames[i - 1].size = ape->frames[i].pos - ape->frames[i - 1].pos;
274 ape->frames[i].skip = (ape->frames[i].pos - ape->frames[0].pos) & 3;
282 avio_skip(pb, ape->seektablelength / sizeof(uint32_t) - ape->totalframes);
284 ape->frames[ape->totalframes - 1].nblocks = ape->finalframeblocks;
288 final_size = file_size - ape->frames[ape->totalframes - 1].pos -
289 ape->wavtaillength;
293 final_size = ape->finalframeblocks * 8LL;
294 ape->frames[ape->totalframes - 1].size = final_size;
296 for (i = 0; i < ape->totalframes; i++) {
297 if(ape->frames[i].skip){
298 ape->frames[i].pos -= ape->frames[i].skip;
299 ape->frames[i].size += ape->frames[i].skip;
301 if (ape->frames[i].size > INT_MAX - 3)
303 ape->frames[i].size = (ape->frames[i].size + 3) & ~3;
305 if (ape->fileversion < 3810) {
306 for (i = 0; i < ape->totalframes; i++) {
309 ape->frames[i - 1].size += 4;
311 ape->frames[i].skip <<= 3;
312 ape->frames[i].skip += bits;
321 ape_dumpinfo(s, ape);
324 ape->fileversion / 1000, (ape->fileversion % 1000) / 10,
325 ape->compressiontype);
332 total_blocks = (ape->totalframes == 0) ? 0 : ((ape->totalframes - 1) * ape->blocksperframe) + ape->finalframeblocks;
337 st->codecpar->ch_layout.nb_channels = ape->channels;
338 st->codecpar->sample_rate = ape->samplerate;
339 st->codecpar->bits_per_coded_sample = ape->bps;
341 st->nb_frames = ape->totalframes;
344 avpriv_set_pts_info(st, 64, 1, ape->samplerate);
348 AV_WL16(st->codecpar->extradata + 0, ape->fileversion);
349 AV_WL16(st->codecpar->extradata + 2, ape->compressiontype);
350 AV_WL16(st->codecpar->extradata + 4, ape->formatflags);
353 for (i = 0; i < ape->totalframes; i++) {
354 ape->frames[i].pts = pts;
355 av_add_index_entry(st, ape->frames[i].pos, ape->frames[i].pts, 0, 0, AVINDEX_KEYFRAME);
356 pts += ape->blocksperframe;
372 APEContext *ape = s->priv_data;
378 if (ape->currentframe >= ape->totalframes)
381 ret64 = avio_seek(s->pb, ape->frames[ape->currentframe].pos, SEEK_SET);
386 if (ape->currentframe == (ape->totalframes - 1))
387 nblocks = ape->finalframeblocks;
389 nblocks = ape->blocksperframe;
391 if (ape->frames[ape->currentframe].size <= 0 ||
392 ape->frames[ape->currentframe].size > INT_MAX - extra_size) {
394 ape->frames[ape->currentframe].size);
395 ape->currentframe++;
399 ret = av_new_packet(pkt, ape->frames[ape->currentframe].size + extra_size);
404 AV_WL32(pkt->data + 4, ape->frames[ape->currentframe].skip);
405 ret = avio_read(s->pb, pkt->data + extra_size, ape->frames[ape->currentframe].size);
410 pkt->pts = ape->frames[ape->currentframe].pts;
417 ape->currentframe++;
424 APEContext *ape = s->priv_data;
426 av_freep(&ape->frames);
433 APEContext *ape = s->priv_data;
442 ape->currentframe = index;
447 .name = "ape",
456 .extensions = "ape,apl,mac",