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tak: decode directly to the user-provided AVFrame

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This commit is contained in:
Justin Ruggles 2012-12-23 20:02:46 -05:00
parent 903b62cc0b
commit 4a2b26fc1b
1 changed files with 8 additions and 11 deletions
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19
libavcodec/takdec.c
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@ -45,7 +45,6 @@ typedef struct MCDParam {
typedef struct TAKDecContext {
AVCodecContext *avctx; // parent AVCodecContext
AVFrame frame; // AVFrame for decoded output
DSPContext dsp;
TAKStreamInfo ti;
GetBitContext gb; // bitstream reader initialized to start at the current frame
@ -176,8 +175,6 @@ static av_cold int tak_decode_init(AVCodecContext *avctx)
ff_dsputil_init(&s->dsp, avctx);
s->avctx = avctx;
avcodec_get_frame_defaults(&s->frame);
avctx->coded_frame = &s->frame;
set_sample_rate_params(avctx);
@ -675,6 +672,7 @@ static int tak_decode_frame(AVCodecContext *avctx, void *data,
int *got_frame_ptr, AVPacket *pkt)
{
TAKDecContext *s = avctx->priv_data;
AVFrame *frame = data;
GetBitContext *gb = &s->gb;
int chan, i, ret, hsize;
@ -741,8 +739,8 @@ static int tak_decode_frame(AVCodecContext *avctx, void *data,
s->nb_samples = s->ti.last_frame_samples ? s->ti.last_frame_samples
: s->ti.frame_samples;
s->frame.nb_samples = s->nb_samples;
if ((ret = ff_get_buffer(avctx, &s->frame)) < 0)
frame->nb_samples = s->nb_samples;
if ((ret = ff_get_buffer(avctx, frame)) < 0)
return ret;
if (avctx->bits_per_coded_sample <= 16) {
@ -759,7 +757,7 @@ static int tak_decode_frame(AVCodecContext *avctx, void *data,
return ret;
} else {
for (chan = 0; chan < avctx->channels; chan++)
s->decoded[chan] = (int32_t *)s->frame.extended_data[chan];
s->decoded[chan] = (int32_t *)frame->extended_data[chan];
}
if (s->nb_samples < 16) {
@ -877,7 +875,7 @@ static int tak_decode_frame(AVCodecContext *avctx, void *data,
switch (avctx->sample_fmt) {
case AV_SAMPLE_FMT_U8P:
for (chan = 0; chan < avctx->channels; chan++) {
uint8_t *samples = (uint8_t *)s->frame.extended_data[chan];
uint8_t *samples = (uint8_t *)frame->extended_data[chan];
int32_t *decoded = s->decoded[chan];
for (i = 0; i < s->nb_samples; i++)
samples[i] = decoded[i] + 0x80;
@ -885,7 +883,7 @@ static int tak_decode_frame(AVCodecContext *avctx, void *data,
break;
case AV_SAMPLE_FMT_S16P:
for (chan = 0; chan < avctx->channels; chan++) {
int16_t *samples = (int16_t *)s->frame.extended_data[chan];
int16_t *samples = (int16_t *)frame->extended_data[chan];
int32_t *decoded = s->decoded[chan];
for (i = 0; i < s->nb_samples; i++)
samples[i] = decoded[i];
@ -893,15 +891,14 @@ static int tak_decode_frame(AVCodecContext *avctx, void *data,
break;
case AV_SAMPLE_FMT_S32P:
for (chan = 0; chan < avctx->channels; chan++) {
int32_t *samples = (int32_t *)s->frame.extended_data[chan];
int32_t *samples = (int32_t *)frame->extended_data[chan];
for (i = 0; i < s->nb_samples; i++)
samples[i] <<= 8;
}
break;
}
*got_frame_ptr = 1;
*(AVFrame *)data = s->frame;
*got_frame_ptr = 1;
return pkt->size;
}