73 int need32 = s->bps > 16;
77 if (need32 || want32) {
148 return ret < 0 ? ret : 0;
160 int metadata_type, metadata_size,
ret;
190 int metadata_last, metadata_size;
191 const uint8_t *buf_end = buf + buf_size;
195 if (buf_end - buf < 4)
199 if (buf_end - buf < metadata_size) {
203 buf += metadata_size;
204 }
while (!metadata_last);
206 return buf_size - (buf_end -
buf);
211 int i, tmp, partition, method_type, rice_order;
212 int rice_bits, rice_esc;
216 if (method_type > 1) {
225 if (samples << rice_order != s->
blocksize) {
231 if (pred_order > samples) {
233 pred_order, samples);
237 rice_bits = 4 + method_type;
238 rice_esc = (1 << rice_bits) - 1;
240 decoded += pred_order;
242 for (partition = 0; partition < (1 << rice_order); partition++) {
244 if (tmp == rice_esc) {
246 for (; i < samples; i++)
249 for (; i < samples; i++) {
260 int pred_order,
int bps)
267 for (i = 0; i < pred_order; i++) {
275 a = decoded[pred_order-1];
277 b =
a - decoded[pred_order-2];
279 c =
b - decoded[pred_order-2] + decoded[pred_order-3];
281 d =
c - decoded[pred_order-2] + 2*decoded[pred_order-3] - decoded[pred_order-4];
283 switch (pred_order) {
287 for (i = pred_order; i < blocksize; i++)
288 decoded[i] =
a += decoded[i];
291 for (i = pred_order; i < blocksize; i++)
292 decoded[i] =
a +=
b += decoded[i];
295 for (i = pred_order; i < blocksize; i++)
296 decoded[i] =
a +=
b +=
c += decoded[i];
299 for (i = pred_order; i < blocksize; i++)
300 decoded[i] =
a +=
b +=
c += d += decoded[i];
314 int coeff_prec, qlevel;
318 for (i = 0; i < pred_order; i++) {
323 if (coeff_prec == 16) {
334 for (i = 0; i < pred_order; i++) {
335 coeffs[pred_order - i - 1] =
get_sbits(&s->
gb, coeff_prec);
349 int type, wasted = 0;
373 "Invalid number of wasted bits > available bits (%d) - left=%d\n",
390 }
else if (type == 1) {
393 }
else if ((type >= 8) && (type <= 12)) {
396 }
else if (type >= 32) {
407 decoded[i] <<= wasted;
424 if (s->channels && fi.channels != s->channels && s->
got_streaminfo) {
436 if (!s->bps && !fi.bps) {
442 }
else if (s->bps && fi.bps != s->bps) {
453 if (!s->max_blocksize)
462 if (!s->samplerate && !fi.samplerate) {
464 " or frame header\n");
467 if (fi.samplerate == 0)
468 fi.samplerate = s->samplerate;
483 for (i = 0; i < s->channels; i++) {
497 int *got_frame_ptr,
AVPacket *avpkt)
502 int buf_size = avpkt->
size;
509 if (s->max_framesize == 0) {
515 if (buf_size > 5 && !memcmp(buf,
"\177FLAC", 5)) {
551 0, buf, bytes_read)) {
565 if (bytes_read > buf_size) {
569 if (bytes_read < buf_size) {
571 buf_size - bytes_read, buf_size);
585 if (s->max_blocksize)