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adpcmdec: use planar sample format for adpcm_ima_qt

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This commit is contained in:
Justin Ruggles 2012-08-28 23:39:53 -04:00
parent 7e5f045039
commit 176db0b892
1 changed files with 17 additions and 8 deletions
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25
libavcodec/adpcm.c
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@ -134,7 +134,14 @@ static av_cold int adpcm_decode_init(AVCodecContext * avctx)
default:
break;
}
avctx->sample_fmt = AV_SAMPLE_FMT_S16;
switch(avctx->codec->id) {
case AV_CODEC_ID_ADPCM_IMA_QT:
avctx->sample_fmt = AV_SAMPLE_FMT_S16P;
break;
default:
avctx->sample_fmt = AV_SAMPLE_FMT_S16;
}
avcodec_get_frame_defaults(&c->frame);
avctx->coded_frame = &c->frame;
@ -573,6 +580,7 @@ static int adpcm_decode_frame(AVCodecContext *avctx, void *data,
ADPCMChannelStatus *cs;
int n, m, channel, i;
short *samples;
int16_t **samples_p;
int st; /* stereo */
int count1, count2;
int nb_samples, coded_samples, ret;
@ -592,6 +600,7 @@ static int adpcm_decode_frame(AVCodecContext *avctx, void *data,
return ret;
}
samples = (short *)c->frame.data[0];
samples_p = (int16_t **)c->frame.extended_data;
/* use coded_samples when applicable */
/* it is always <= nb_samples, so the output buffer will be large enough */
@ -636,14 +645,12 @@ static int adpcm_decode_frame(AVCodecContext *avctx, void *data,
return AVERROR_INVALIDDATA;
}
samples = (short *)c->frame.data[0] + channel;
samples = samples_p[channel];
for (m = 0; m < 32; m++) {
for (m = 0; m < 64; m += 2) {
int byte = bytestream2_get_byteu(&gb);
*samples = adpcm_ima_qt_expand_nibble(cs, byte & 0x0F, 3);
samples += avctx->channels;
*samples = adpcm_ima_qt_expand_nibble(cs, byte >> 4 , 3);
samples += avctx->channels;
samples[m ] = adpcm_ima_qt_expand_nibble(cs, byte & 0x0F, 3);
samples[m + 1] = adpcm_ima_qt_expand_nibble(cs, byte >> 4 , 3);
}
}
break;
@ -1267,6 +1274,8 @@ static int adpcm_decode_frame(AVCodecContext *avctx, void *data,
static const enum AVSampleFormat sample_fmts_s16[] = { AV_SAMPLE_FMT_S16,
AV_SAMPLE_FMT_NONE };
static const enum AVSampleFormat sample_fmts_s16p[] = { AV_SAMPLE_FMT_S16,
AV_SAMPLE_FMT_NONE };
#define ADPCM_DECODER(id_, sample_fmts_, name_, long_name_) \
AVCodec ff_ ## name_ ## _decoder = { \
@ -1297,7 +1306,7 @@ ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_DK4, sample_fmts_s16, adpcm_ima_dk4,
ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_EA_EACS, sample_fmts_s16, adpcm_ima_ea_eacs, "ADPCM IMA Electronic Arts EACS");
ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_EA_SEAD, sample_fmts_s16, adpcm_ima_ea_sead, "ADPCM IMA Electronic Arts SEAD");
ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_ISS, sample_fmts_s16, adpcm_ima_iss, "ADPCM IMA Funcom ISS");
ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_QT, sample_fmts_s16, adpcm_ima_qt, "ADPCM IMA QuickTime");
ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_QT, sample_fmts_s16p, adpcm_ima_qt, "ADPCM IMA QuickTime");
ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_SMJPEG, sample_fmts_s16, adpcm_ima_smjpeg, "ADPCM IMA Loki SDL MJPEG");
ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_WAV, sample_fmts_s16, adpcm_ima_wav, "ADPCM IMA WAV");
ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_WS, sample_fmts_s16, adpcm_ima_ws, "ADPCM IMA Westwood");