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avcodec/dcaenc: Avoid copying packet data, allow user-supplied buffers 

When the packet size is known in advance like here, one can avoid
an intermediate buffer for the packet data by using
ff_get_encode_buffer() and also set AV_CODEC_CAP_DR1 at the same time.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This commit is contained in:
Andreas Rheinhardt 2021-04-25 01:43:26 +02:00
parent 72c521e80a
commit 4569c70f14
1 changed files with 3 additions and 2 deletions
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5
libavcodec/dcaenc.c
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@ -37,6 +37,7 @@
#include "dca_core.h"
#include "dcadata.h"
#include "dcaenc.h"
#include "encode.h"
#include "fft.h"
#include "internal.h"
#include "mathops.h"
@ -1182,7 +1183,7 @@ static int encode_frame(AVCodecContext *avctx, AVPacket *avpkt,
const int32_t *samples;
int ret, i;
if ((ret = ff_alloc_packet2(avctx, avpkt, c->frame_size, 0)) < 0)
if ((ret = ff_get_encode_buffer(avctx, avpkt, c->frame_size, 0)) < 0)
return ret;
samples = (const int32_t *)frame->data[0];
@ -1239,11 +1240,11 @@ const AVCodec ff_dca_encoder = {
.long_name = NULL_IF_CONFIG_SMALL("DCA (DTS Coherent Acoustics)"),
.type = AVMEDIA_TYPE_AUDIO,
.id = AV_CODEC_ID_DTS,
.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_EXPERIMENTAL,
.priv_data_size = sizeof(DCAEncContext),
.init = encode_init,
.close = encode_close,
.encode2 = encode_frame,
.capabilities = AV_CODEC_CAP_EXPERIMENTAL,
.caps_internal = FF_CODEC_CAP_INIT_THREADSAFE | FF_CODEC_CAP_INIT_CLEANUP,
.sample_fmts = (const enum AVSampleFormat[]){ AV_SAMPLE_FMT_S32,
AV_SAMPLE_FMT_NONE },