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Code Issues Releases Activity

als: decode directly to the user-provided AVFrame

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This commit is contained in:
Justin Ruggles 2012-12-23 16:59:43 -05:00
parent 5cd597f22f
commit 9b0b355e97
1 changed files with 9 additions and 14 deletions
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23
libavcodec/alsdec.c
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@ -192,7 +192,6 @@ typedef struct {
typedef struct {
AVCodecContext *avctx;
AVFrame frame;
ALSSpecificConfig sconf;
GetBitContext gb;
DSPContext dsp;
@ -1432,6 +1431,7 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame_ptr,
AVPacket *avpkt)
{
ALSDecContext *ctx = avctx->priv_data;
AVFrame *frame = data;
ALSSpecificConfig *sconf = &ctx->sconf;
const uint8_t *buffer = avpkt->data;
int buffer_size = avpkt->size;
@ -1461,8 +1461,8 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame_ptr,
ctx->frame_id++;
/* get output buffer */
ctx->frame.nb_samples = ctx->cur_frame_length;
if ((ret = ff_get_buffer(avctx, &ctx->frame)) < 0) {
frame->nb_samples = ctx->cur_frame_length;
if ((ret = ff_get_buffer(avctx, frame)) < 0) {
av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
return ret;
}
@ -1470,7 +1470,7 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame_ptr,
// transform decoded frame into output format
#define INTERLEAVE_OUTPUT(bps) \
{ \
int##bps##_t *dest = (int##bps##_t*)ctx->frame.data[0]; \
int##bps##_t *dest = (int##bps##_t*)frame->data[0]; \
shift = bps - ctx->avctx->bits_per_raw_sample; \
for (sample = 0; sample < ctx->cur_frame_length; sample++) \
for (c = 0; c < avctx->channels; c++) \
@ -1488,7 +1488,7 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame_ptr,
int swap = HAVE_BIGENDIAN != sconf->msb_first;
if (ctx->avctx->bits_per_raw_sample == 24) {
int32_t *src = (int32_t *)ctx->frame.data[0];
int32_t *src = (int32_t *)frame->data[0];
for (sample = 0;
sample < ctx->cur_frame_length * avctx->channels;
@ -1509,7 +1509,7 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame_ptr,
if (swap) {
if (ctx->avctx->bits_per_raw_sample <= 16) {
int16_t *src = (int16_t*) ctx->frame.data[0];
int16_t *src = (int16_t*) frame->data[0];
int16_t *dest = (int16_t*) ctx->crc_buffer;
for (sample = 0;
sample < ctx->cur_frame_length * avctx->channels;
@ -1517,12 +1517,12 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame_ptr,
*dest++ = av_bswap16(src[sample]);
} else {
ctx->dsp.bswap_buf((uint32_t*)ctx->crc_buffer,
(uint32_t *)ctx->frame.data[0],
(uint32_t *)frame->data[0],
ctx->cur_frame_length * avctx->channels);
}
crc_source = ctx->crc_buffer;
} else {
crc_source = ctx->frame.data[0];
crc_source = frame->data[0];
}
ctx->crc = av_crc(ctx->crc_table, ctx->crc, crc_source,
@ -1538,9 +1538,7 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame_ptr,
}
}
*got_frame_ptr = 1;
*(AVFrame *)data = ctx->frame;
*got_frame_ptr = 1;
bytes_read = invalid_frame ? buffer_size :
(get_bits_count(&ctx->gb) + 7) >> 3;
@ -1737,9 +1735,6 @@ static av_cold int decode_init(AVCodecContext *avctx)
ff_dsputil_init(&ctx->dsp, avctx);
avcodec_get_frame_defaults(&ctx->frame);
avctx->coded_frame = &ctx->frame;
return 0;
}