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Properly check to see if there's room for DRED

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This commit is contained in:
Jean-Marc Valin 2023-05-08 19:04:08 -04:00
parent b446e96ad1
commit d7e1bd507f
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GPG key ID: 531A52533318F00A
2 changed files with 7 additions and 4 deletions
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1
silk/dred_config.h
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@ -26,6 +26,7 @@
*/
#define DRED_VERSION 0
#define DRED_MIN_BYTES 16
/* these are inpart duplicates to the values defined in dred_rdovae_constants.h */
#define DRED_NUM_FEATURES 20

10
src/opus_encoder.c
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@ -2194,18 +2194,20 @@ opus_int32 opus_encode_native(OpusEncoder *st, const opus_val16 *pcm, int frame_
opus_extension_data extension;
unsigned char buf[DRED_MAX_DATA_SIZE];
int dred_chunks;
int dred_bytes;
int dred_bytes_left;
DREDEnc *dred = &((silk_encoder*)silk_enc)->state_Fxx[0].sCmn.dred_encoder;
dred_chunks = IMIN(st->dred_duration/4, DRED_NUM_REDUNDANCY_FRAMES/2);
dred_bytes = IMIN(DRED_MAX_DATA_SIZE, max_data_bytes-ret-2);
dred_bytes_left = IMIN(DRED_MAX_DATA_SIZE, max_data_bytes-ret-2);
/* Check whether we actually have something to encode. */
if (dred_chunks >= 1 && dred_bytes >= 5) {
if (dred_chunks >= 1 && dred_bytes_left >= DRED_MIN_BYTES+2) {
int dred_bytes;
/* Add temporary extension type and version.
These bytes will be removed once extension is finalized. */
buf[0] = 'D';
buf[1] = DRED_VERSION;
dred_bytes = dred_encode_silk_frame(dred, buf+2, dred_chunks, dred_bytes-2);
dred_bytes = dred_encode_silk_frame(dred, buf+2, dred_chunks, dred_bytes_left-2);
dred_bytes += 2;
celt_assert(dred_bytes <= dred_bytes_left);
extension.id = 127;
extension.frame = 0;
extension.data = buf;