diff options
Diffstat (limited to 'libavcodec')
| -rw-r--r-- | libavcodec/adpcm.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/libavcodec/adpcm.c b/libavcodec/adpcm.c index ebf37dbcf9..6abe18495c 100644 --- a/libavcodec/adpcm.c +++ b/libavcodec/adpcm.c @@ -154,6 +154,8 @@ typedef struct ADPCMContext { #if CONFIG_ENCODERS static av_cold int adpcm_encode_init(AVCodecContext *avctx) { + uint8_t *extradata; + int i; if (avctx->channels > 2) return -1; /* only stereo or mono =) */ @@ -177,6 +179,16 @@ static av_cold int adpcm_encode_init(AVCodecContext *avctx) avctx->frame_size = (BLKSIZE - 7 * avctx->channels) * 2 / avctx->channels + 2; /* each 16 bits sample gives one nibble */ /* and we have 7 bytes per channel overhead */ avctx->block_align = BLKSIZE; + avctx->extradata_size = 32; + extradata = avctx->extradata = av_malloc(avctx->extradata_size); + if (!extradata) + return AVERROR(ENOMEM); + bytestream_put_le16(&extradata, avctx->frame_size); + bytestream_put_le16(&extradata, 7); /* wNumCoef */ + for (i = 0; i < 7; i++) { + bytestream_put_le16(&extradata, AdaptCoeff1[i] * 4); + bytestream_put_le16(&extradata, AdaptCoeff2[i] * 4); + } break; case CODEC_ID_ADPCM_YAMAHA: avctx->frame_size = BLKSIZE * avctx->channels; |