return AVERROR(EINVAL);
}
- if (s->block_size & (s->block_size - 1)) {
+ /*
+ * AMV's block size has to match that of the corresponding video
+ * stream. Relax the POT requirement.
+ */
+ if (avctx->codec->id != AV_CODEC_ID_ADPCM_IMA_AMV &&
+ (s->block_size & (s->block_size - 1))) {
av_log(avctx, AV_LOG_ERROR, "block size must be power of 2\n");
return AVERROR(EINVAL);
}
"22050 or 44100\n");
return AVERROR(EINVAL);
}
- avctx->frame_size = (s->block_size / 2) * (avctx->sample_rate / 11025);
+ avctx->frame_size = 4096; /* Hardcoded according to the SWF spec. */
avctx->block_align = (2 + avctx->channels * (22 + 4 * (avctx->frame_size - 1)) + 7) / 8;
break;
case AV_CODEC_ID_ADPCM_IMA_SSI:
+ case AV_CODEC_ID_ADPCM_IMA_ALP:
avctx->frame_size = s->block_size * 2 / avctx->channels;
avctx->block_align = s->block_size;
break;
+ case AV_CODEC_ID_ADPCM_IMA_AMV:
+ if (avctx->sample_rate != 22050) {
+ av_log(avctx, AV_LOG_ERROR, "Sample rate must be 22050\n");
+ return AVERROR(EINVAL);
+ }
+
+ if (avctx->channels != 1) {
+ av_log(avctx, AV_LOG_ERROR, "Only mono is supported\n");
+ return AVERROR(EINVAL);
+ }
+
+ avctx->frame_size = s->block_size;
+ avctx->block_align = 8 + (FFALIGN(avctx->frame_size, 2) / 2);
+ break;
case AV_CODEC_ID_ADPCM_IMA_APM:
avctx->frame_size = s->block_size * 2 / avctx->channels;
avctx->block_align = s->block_size;
return nibble;
}
+static inline uint8_t adpcm_ima_alp_compress_sample(ADPCMChannelStatus *c, int16_t sample)
+{
+ const int delta = sample - c->prev_sample;
+ const int step = ff_adpcm_step_table[c->step_index];
+ const int sign = (delta < 0) * 8;
+
+ int nibble = FFMIN(abs(delta) * 4 / step, 7);
+ int diff = (step * nibble) >> 2;
+ if (sign)
+ diff = -diff;
+
+ nibble = sign | nibble;
+
+ c->prev_sample += diff;
+ c->prev_sample = av_clip_int16(c->prev_sample);
+ c->step_index = av_clip(c->step_index + ff_adpcm_index_table[nibble], 0, 88);
+ return nibble;
+}
+
static inline uint8_t adpcm_ima_qt_compress_sample(ADPCMChannelStatus *c,
int16_t sample)
{
nodes[0]->sample2 = c->sample2;
if (version == AV_CODEC_ID_ADPCM_IMA_WAV ||
version == AV_CODEC_ID_ADPCM_IMA_QT ||
+ version == AV_CODEC_ID_ADPCM_IMA_AMV ||
version == AV_CODEC_ID_ADPCM_SWF)
nodes[0]->sample1 = c->prev_sample;
if (version == AV_CODEC_ID_ADPCM_MS)
}
} else if (version == AV_CODEC_ID_ADPCM_IMA_WAV ||
version == AV_CODEC_ID_ADPCM_IMA_QT ||
+ version == AV_CODEC_ID_ADPCM_IMA_AMV ||
version == AV_CODEC_ID_ADPCM_SWF) {
#define LOOP_NODES(NAME, STEP_TABLE, STEP_INDEX)\
const int predictor = nodes[j]->sample1;\
st = avctx->channels == 2;
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)
pkt_size = (frame->nb_samples * avctx->channels) / 2;
else
flush_put_bits(&pb);
break;
}
+ case AV_CODEC_ID_ADPCM_IMA_ALP:
+ {
+ PutBitContext pb;
+ init_put_bits(&pb, dst, pkt_size);
+
+ av_assert0(avctx->trellis == 0);
+
+ for (n = frame->nb_samples / 2; n > 0; n--) {
+ for (ch = 0; ch < avctx->channels; ch++) {
+ put_bits(&pb, 4, adpcm_ima_alp_compress_sample(c->status + ch, *samples++));
+ put_bits(&pb, 4, adpcm_ima_alp_compress_sample(c->status + ch, samples[st]));
+ }
+ samples += avctx->channels;
+ }
+
+ flush_put_bits(&pb);
+ break;
+ }
case AV_CODEC_ID_ADPCM_SWF:
{
PutBitContext pb;
flush_put_bits(&pb);
break;
}
+ case AV_CODEC_ID_ADPCM_IMA_AMV:
+ {
+ av_assert0(avctx->channels == 1);
+
+ c->status[0].prev_sample = *samples;
+ bytestream_put_le16(&dst, c->status[0].prev_sample);
+ bytestream_put_byte(&dst, c->status[0].step_index);
+ bytestream_put_byte(&dst, 0);
+ bytestream_put_le32(&dst, avctx->frame_size);
+
+ if (avctx->trellis > 0) {
+ n = frame->nb_samples >> 1;
+
+ if (!(buf = av_malloc(2 * n)))
+ return AVERROR(ENOMEM);
+
+ adpcm_compress_trellis(avctx, samples, buf, &c->status[0], 2 * n, avctx->channels);
+ for (i = 0; i < n; i++)
+ bytestream_put_byte(&dst, (buf[2 * i] << 4) | buf[2 * i + 1]);
+
+ samples += 2 * n;
+ av_free(buf);
+ } else for (n = frame->nb_samples >> 1; n > 0; n--) {
+ int nibble;
+ nibble = adpcm_ima_compress_sample(&c->status[0], *samples++) << 4;
+ nibble |= adpcm_ima_compress_sample(&c->status[0], *samples++) & 0x0F;
+ bytestream_put_byte(&dst, nibble);
+ }
+
+ if (avctx->frame_size & 1) {
+ int nibble = adpcm_ima_compress_sample(&c->status[0], *samples++) << 4;
+ bytestream_put_byte(&dst, nibble);
+ }
+ break;
+ }
case AV_CODEC_ID_ADPCM_ARGO:
{
PutBitContext pb;
.close = adpcm_encode_close, \
.sample_fmts = sample_fmts_, \
.capabilities = capabilities_, \
- .caps_internal = FF_CODEC_CAP_INIT_CLEANUP, \
+ .caps_internal = FF_CODEC_CAP_INIT_CLEANUP | FF_CODEC_CAP_INIT_THREADSAFE, \
.priv_class = &adpcm_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_AMV, adpcm_ima_amv, sample_fmts, 0, "ADPCM IMA AMV");
ADPCM_ENCODER(AV_CODEC_ID_ADPCM_IMA_APM, adpcm_ima_apm, sample_fmts, AV_CODEC_CAP_SMALL_LAST_FRAME, "ADPCM IMA Ubisoft APM");
+ADPCM_ENCODER(AV_CODEC_ID_ADPCM_IMA_ALP, adpcm_ima_alp, sample_fmts, AV_CODEC_CAP_SMALL_LAST_FRAME, "ADPCM IMA High Voltage Software ALP");
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");
projects / ffmpeg / blobdiff