if (avctx->codec->id == AV_CODEC_ID_ADPCM_IMA_SSI ||
avctx->codec->id == AV_CODEC_ID_ADPCM_IMA_APM ||
- avctx->codec->id == AV_CODEC_ID_ADPCM_ARGO) {
+ avctx->codec->id == AV_CODEC_ID_ADPCM_ARGO ||
+ avctx->codec->id == AV_CODEC_ID_ADPCM_IMA_WS) {
/*
* The current trellis implementation doesn't work for extended
* runs of samples without periodic resets. Disallow it.
avctx->frame_size = 32;
avctx->block_align = 17 * avctx->channels;
break;
+ case AV_CODEC_ID_ADPCM_IMA_WS:
+ /* each 16 bits sample gives one nibble */
+ avctx->frame_size = s->block_size * 2 / avctx->channels;
+ avctx->block_align = s->block_size;
+ break;
default:
return AVERROR(EINVAL);
}
if (avctx->codec_id == AV_CODEC_ID_ADPCM_IMA_SSI ||
avctx->codec_id == AV_CODEC_ID_ADPCM_IMA_ALP ||
- avctx->codec_id == AV_CODEC_ID_ADPCM_IMA_APM)
+ avctx->codec_id == AV_CODEC_ID_ADPCM_IMA_APM ||
+ avctx->codec_id == AV_CODEC_ID_ADPCM_IMA_WS)
pkt_size = (frame->nb_samples * avctx->channels) / 2;
else
pkt_size = avctx->block_align;
n = frame->nb_samples - 1;
+ /* NB: This is safe as we don't have AV_CODEC_CAP_SMALL_LAST_FRAME. */
+ av_assert0(n == 4095);
+
// store AdpcmCodeSize
put_bits(&pb, 2, 2); // set 4-bit flash adpcm format
}
if (avctx->trellis > 0) {
- if (!(buf = av_malloc(2 * n)))
- return AVERROR(ENOMEM);
+ uint8_t buf[8190 /* = 2 * n */];
adpcm_compress_trellis(avctx, samples + avctx->channels, buf,
&c->status[0], n, avctx->channels);
if (avctx->channels == 2)
if (avctx->channels == 2)
put_bits(&pb, 4, buf[n + i]);
}
- av_free(buf);
} else {
for (i = 1; i < frame->nb_samples; i++) {
put_bits(&pb, 4, adpcm_ima_compress_sample(&c->status[0],
flush_put_bits(&pb);
break;
}
+ case AV_CODEC_ID_ADPCM_IMA_WS:
+ {
+ PutBitContext pb;
+ init_put_bits(&pb, dst, pkt_size);
+
+ av_assert0(avctx->trellis == 0);
+ for (n = frame->nb_samples / 2; n > 0; n--) {
+ /* stereo: 1 byte (2 samples) for left, 1 byte for right */
+ for (ch = 0; ch < avctx->channels; ch++) {
+ int t1, t2;
+ t1 = adpcm_ima_compress_sample(&c->status[ch], *samples++);
+ t2 = adpcm_ima_compress_sample(&c->status[ch], samples[st]);
+ put_bits(&pb, 4, t2);
+ put_bits(&pb, 4, t1);
+ }
+ samples += avctx->channels;
+ }
+ flush_put_bits(&pb);
+ break;
+ }
default:
return AVERROR(EINVAL);
}
{ 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 = { \
+static const AVClass name_ ## _encoder_class = { \
+ .class_name = #name_, \
+ .item_name = av_default_item_name, \
+ .option = options, \
+ .version = LIBAVUTIL_VERSION_INT, \
+}; \
+ \
+const AVCodec ff_ ## name_ ## _encoder = { \
.name = #name_, \
.long_name = NULL_IF_CONFIG_SMALL(long_name_), \
.type = AVMEDIA_TYPE_AUDIO, \
.sample_fmts = sample_fmts_, \
.capabilities = capabilities_, \
.caps_internal = FF_CODEC_CAP_INIT_CLEANUP | FF_CODEC_CAP_INIT_THREADSAFE, \
- .priv_class = &adpcm_encoder_class, \
+ .priv_class = &name_ ## _encoder_class, \
}
ADPCM_ENCODER(AV_CODEC_ID_ADPCM_ARGO, adpcm_argo, sample_fmts_p, 0, "ADPCM Argonaut Games");
ADPCM_ENCODER(AV_CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt, sample_fmts_p, 0, "ADPCM IMA QuickTime");
ADPCM_ENCODER(AV_CODEC_ID_ADPCM_IMA_SSI, adpcm_ima_ssi, sample_fmts, AV_CODEC_CAP_SMALL_LAST_FRAME, "ADPCM IMA Simon & Schuster Interactive");
ADPCM_ENCODER(AV_CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav, sample_fmts_p, 0, "ADPCM IMA WAV");
+ADPCM_ENCODER(AV_CODEC_ID_ADPCM_IMA_WS, adpcm_ima_ws, sample_fmts, AV_CODEC_CAP_SMALL_LAST_FRAME, "ADPCM IMA Westwood");
ADPCM_ENCODER(AV_CODEC_ID_ADPCM_MS, adpcm_ms, sample_fmts, 0, "ADPCM Microsoft");
ADPCM_ENCODER(AV_CODEC_ID_ADPCM_SWF, adpcm_swf, sample_fmts, 0, "ADPCM Shockwave Flash");
ADPCM_ENCODER(AV_CODEC_ID_ADPCM_YAMAHA, adpcm_yamaha, sample_fmts, 0, "ADPCM Yamaha");