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

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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 c7a0addf93
commit 7bb7161f86
1 changed files with 4 additions and 2 deletions
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6
libavcodec/roqaudioenc.c
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@ -23,6 +23,7 @@
#include "avcodec.h"
#include "bytestream.h"
#include "encode.h"
#include "internal.h"
#include "mathops.h"
@ -154,7 +155,8 @@ static int roq_dpcm_encode_frame(AVCodecContext *avctx, AVPacket *avpkt,
else
data_size = avctx->channels * avctx->frame_size;
if ((ret = ff_alloc_packet2(avctx, avpkt, ROQ_HEADER_SIZE + data_size, 0)) < 0)
ret = ff_get_encode_buffer(avctx, avpkt, ROQ_HEADER_SIZE + data_size, 0);
if (ret < 0)
return ret;
out = avpkt->data;
@ -188,11 +190,11 @@ const AVCodec ff_roq_dpcm_encoder = {
.long_name = NULL_IF_CONFIG_SMALL("id RoQ DPCM"),
.type = AVMEDIA_TYPE_AUDIO,
.id = AV_CODEC_ID_ROQ_DPCM,
.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_DELAY,
.priv_data_size = sizeof(ROQDPCMContext),
.init = roq_dpcm_encode_init,
.encode2 = roq_dpcm_encode_frame,
.close = roq_dpcm_encode_close,
.capabilities = AV_CODEC_CAP_DELAY,
.sample_fmts = (const enum AVSampleFormat[]){ AV_SAMPLE_FMT_S16,
AV_SAMPLE_FMT_NONE },
.caps_internal = FF_CODEC_CAP_INIT_THREADSAFE,