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atrac3: decode output to float samples instead of converting to s16

This commit is contained in:
Justin Ruggles 2011-10-14 16:13:30 -04:00
parent f20dd574f1
commit c4a6fde33f
1 changed files with 7 additions and 8 deletions
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15
libavcodec/atrac3.c
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@ -208,7 +208,7 @@ static av_cold void init_atrac3_transforms(ATRAC3Context *q) {
}
/* Initialize the MDCT transform. */
ff_mdct_init(&q->mdct_ctx, 9, 1, 1.0);
ff_mdct_init(&q->mdct_ctx, 9, 1, 1.0 / 32768);
}
/**
@ -825,7 +825,7 @@ static int atrac3_decode_frame(AVCodecContext *avctx,
ATRAC3Context *q = avctx->priv_data;
int result = 0, i;
const uint8_t* databuf;
int16_t* samples = data;
float *samples = data;
if (buf_size < avctx->block_align) {
av_log(avctx, AV_LOG_ERROR,
@ -852,16 +852,15 @@ static int atrac3_decode_frame(AVCodecContext *avctx,
if (q->channels == 1) {
/* mono */
for (i = 0; i<1024; i++)
samples[i] = av_clip_int16(round(q->outSamples[i]));
*data_size = 1024 * sizeof(int16_t);
samples[i] = q->outSamples[i];
} else {
/* stereo */
for (i = 0; i < 1024; i++) {
samples[i*2] = av_clip_int16(round(q->outSamples[i]));
samples[i*2+1] = av_clip_int16(round(q->outSamples[1024+i]));
samples[i*2] = q->outSamples[i];
samples[i*2+1] = q->outSamples[1024+i];
}
*data_size = 2048 * sizeof(int16_t);
}
*data_size = 1024 * q->channels * av_get_bytes_per_sample(avctx->sample_fmt);
return avctx->block_align;
}
@ -1014,7 +1013,7 @@ static av_cold int atrac3_decode_init(AVCodecContext *avctx)
return AVERROR(ENOMEM);
}
avctx->sample_fmt = AV_SAMPLE_FMT_S16;
avctx->sample_fmt = AV_SAMPLE_FMT_FLT;
return 0;
}