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avcodec/adpcmenc: add "block_size" option

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Signed-off-by: Zane van Iperen <zane@zanevaniperen.com>
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Zane van Iperen 2020-10-14 22:16:53 +10:00
parent fcec7a6848
commit c78c60c3e8
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GPG Key ID: 68616B2D8AC4DCC5
1 changed files with 32 additions and 0 deletions
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32
libavcodec/adpcmenc.c
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@ -22,6 +22,8 @@
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "libavutil/opt.h"
#include "avcodec.h"
#include "put_bits.h"
#include "bytestream.h"
@ -49,6 +51,9 @@ typedef struct TrellisNode {
} TrellisNode;
typedef struct ADPCMEncodeContext {
AVClass *class;
int block_size;
ADPCMChannelStatus status[6];
TrellisPath *paths;
TrellisNode *node_buf;
@ -69,6 +74,11 @@ static av_cold int adpcm_encode_init(AVCodecContext *avctx)
return AVERROR(EINVAL);
}
if (s->block_size & (s->block_size - 1)) {
av_log(avctx, AV_LOG_ERROR, "block size must be power of 2\n");
return AVERROR(EINVAL);
}
if (avctx->trellis) {
int frontier, max_paths;
@ -841,6 +851,27 @@ static const enum AVSampleFormat sample_fmts_p[] = {
AV_SAMPLE_FMT_S16P, AV_SAMPLE_FMT_NONE
};
static const AVOption options[] = {
{
.name = "block_size",
.help = "set the block size",
.offset = offsetof(ADPCMEncodeContext, block_size),
.type = AV_OPT_TYPE_INT,
.default_val = {.i64 = BLKSIZE},
.min = 32,
.max = 8192, /* Is this a reasonable upper limit? */
.flags = AV_OPT_FLAG_ENCODING_PARAM | AV_OPT_FLAG_AUDIO_PARAM
},
{ NULL }
};
static const AVClass adpcm_encoder_class = {
.class_name = "ADPCM Encoder",
.item_name = av_default_item_name,
.option = options,
.version = LIBAVUTIL_VERSION_INT,
};
#define ADPCM_ENCODER(id_, name_, sample_fmts_, capabilities_, long_name_) \
AVCodec ff_ ## name_ ## _encoder = { \
.name = #name_, \
@ -854,6 +885,7 @@ AVCodec ff_ ## name_ ## _encoder = { \
.sample_fmts = sample_fmts_, \
.capabilities = capabilities_, \
.caps_internal = FF_CODEC_CAP_INIT_CLEANUP, \
.priv_class = &adpcm_encoder_class, \
}
ADPCM_ENCODER(AV_CODEC_ID_ADPCM_ARGO, adpcm_argo, sample_fmts_p, 0, "ADPCM Argonaut Games");