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avcodec/dnxhdenc: 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 4569c70f14
commit 1393c7edae
1 changed files with 4 additions and 2 deletions
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6
libavcodec/dnxhdenc.c
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@ -30,6 +30,7 @@
#include "avcodec.h"
#include "blockdsp.h"
#include "encode.h"
#include "fdctdsp.h"
#include "internal.h"
#include "mpegvideo.h"
@ -1257,7 +1258,7 @@ static int dnxhd_encode_picture(AVCodecContext *avctx, AVPacket *pkt,
int offset, i, ret;
uint8_t *buf;
if ((ret = ff_alloc_packet2(avctx, pkt, ctx->frame_size, 0)) < 0)
if ((ret = ff_get_encode_buffer(avctx, pkt, ctx->frame_size, 0)) < 0)
return ret;
buf = pkt->data;
@ -1354,11 +1355,12 @@ const AVCodec ff_dnxhd_encoder = {
.long_name = NULL_IF_CONFIG_SMALL("VC3/DNxHD"),
.type = AVMEDIA_TYPE_VIDEO,
.id = AV_CODEC_ID_DNXHD,
.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS |
AV_CODEC_CAP_SLICE_THREADS,
.priv_data_size = sizeof(DNXHDEncContext),
.init = dnxhd_encode_init,
.encode2 = dnxhd_encode_picture,
.close = dnxhd_encode_end,
.capabilities = AV_CODEC_CAP_SLICE_THREADS | AV_CODEC_CAP_FRAME_THREADS,
.caps_internal = FF_CODEC_CAP_INIT_CLEANUP,
.pix_fmts = (const enum AVPixelFormat[]) {
AV_PIX_FMT_YUV422P,