70 int need32 = s->bps > 16;
74 if (need32 || want32) {
153 int metadata_type, metadata_size, ret;
183 int metadata_last, metadata_size;
184 const uint8_t *buf_end = buf + buf_size;
188 if (buf_end - buf < 4)
192 if (buf_end - buf < metadata_size) {
196 buf += metadata_size;
197 }
while (!metadata_last);
199 return buf_size - (buf_end - buf);
204 int i, tmp, partition, method_type, rice_order;
205 int rice_bits, rice_esc;
209 if (method_type > 1) {
218 if (pred_order > samples) {
220 pred_order, samples);
224 rice_bits = 4 + method_type;
225 rice_esc = (1 << rice_bits) - 1;
227 decoded += pred_order;
229 for (partition = 0; partition < (1 << rice_order); partition++) {
231 if (tmp == rice_esc) {
247 int pred_order,
int bps)
250 int a,
b, c, d, i, ret;
253 for (i = 0; i < pred_order; i++) {
261 a = decoded[pred_order-1];
263 b = a - decoded[pred_order-2];
265 c = b - decoded[pred_order-2] + decoded[pred_order-3];
267 d = c - decoded[pred_order-2] + 2*decoded[pred_order-3] - decoded[pred_order-4];
269 switch (pred_order) {
273 for (i = pred_order; i < blocksize; i++)
274 decoded[i] = a += decoded[i];
277 for (i = pred_order; i < blocksize; i++)
278 decoded[i] = a += b += decoded[i];
281 for (i = pred_order; i < blocksize; i++)
282 decoded[i] = a += b += c += decoded[i];
285 for (i = pred_order; i < blocksize; i++)
286 decoded[i] = a += b += c += d += decoded[i];
300 int coeff_prec, qlevel;
304 for (i = 0; i < pred_order; i++) {
309 if (coeff_prec == 16) {
320 for (i = 0; i < pred_order; i++) {
321 coeffs[pred_order - i - 1] =
get_sbits(&s->
gb, coeff_prec);
335 int type, wasted = 0;
360 "Invalid number of wasted bits > available bits (%d) - left=%d\n",
378 }
else if (type == 1) {
381 }
else if ((type >= 8) && (type <= 12)) {
384 }
else if (type >= 32) {
395 decoded[i] <<= wasted;
412 if (s->channels && fi.channels != s->channels && s->
got_streaminfo) {
424 if (!s->bps && !fi.bps) {
430 }
else if (s->bps && fi.bps != s->bps) {
441 if (!s->max_blocksize)
450 if (!s->samplerate && !fi.samplerate) {
452 " or frame header\n");
455 if (fi.samplerate == 0)
456 fi.samplerate = s->samplerate;
471 for (i = 0; i < s->channels; i++) {
485 int *got_frame_ptr,
AVPacket *avpkt)
489 int buf_size = avpkt->
size;
496 if (s->max_framesize == 0) {
535 if (bytes_read > buf_size) {
539 if (bytes_read < buf_size) {
541 buf_size - bytes_read, buf_size);