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avcodec/nellymoserenc: Avoid copying packet 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 8fb25961b9
commit ef6232aa38
1 changed files with 4 additions and 2 deletions
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6
libavcodec/nellymoserenc.c
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@ -42,6 +42,7 @@
#include "audio_frame_queue.h"
#include "avcodec.h"
#include "encode.h"
#include "fft.h"
#include "internal.h"
#include "nellymoser.h"
@ -405,7 +406,7 @@ static int encode_frame(AVCodecContext *avctx, AVPacket *avpkt,
s->last_frame = 1;
}
if ((ret = ff_alloc_packet2(avctx, avpkt, NELLY_BLOCK_LEN, 0)) < 0)
if ((ret = ff_get_encode_buffer(avctx, avpkt, NELLY_BLOCK_LEN, 0)) < 0)
return ret;
encode_block(s, avpkt->data, avpkt->size);
@ -422,11 +423,12 @@ const AVCodec ff_nellymoser_encoder = {
.long_name = NULL_IF_CONFIG_SMALL("Nellymoser Asao"),
.type = AVMEDIA_TYPE_AUDIO,
.id = AV_CODEC_ID_NELLYMOSER,
.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_DELAY |
AV_CODEC_CAP_SMALL_LAST_FRAME,
.priv_data_size = sizeof(NellyMoserEncodeContext),
.init = encode_init,
.encode2 = encode_frame,
.close = encode_end,
.capabilities = AV_CODEC_CAP_SMALL_LAST_FRAME | AV_CODEC_CAP_DELAY,
.sample_fmts = (const enum AVSampleFormat[]){ AV_SAMPLE_FMT_FLT,
AV_SAMPLE_FMT_NONE },
.caps_internal = FF_CODEC_CAP_INIT_THREADSAFE | FF_CODEC_CAP_INIT_CLEANUP,