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avcodec/y41penc: 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 765366bcba
commit a043dcbe65
1 changed files with 4 additions and 1 deletions
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5
libavcodec/y41penc.c
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@ -21,6 +21,7 @@
*/
#include "avcodec.h"
#include "encode.h"
#include "internal.h"
static av_cold int y41p_encode_init(AVCodecContext *avctx)
@ -43,7 +44,8 @@ static int y41p_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
uint8_t *y, *u, *v;
int i, j, ret;
if ((ret = ff_alloc_packet2(avctx, pkt, avctx->width * avctx->height * 1.5, 0)) < 0)
ret = ff_get_encode_buffer(avctx, pkt, avctx->width * avctx->height * 1.5, 0);
if (ret < 0)
return ret;
dst = pkt->data;
@ -80,6 +82,7 @@ const AVCodec ff_y41p_encoder = {
.long_name = NULL_IF_CONFIG_SMALL("Uncompressed YUV 4:1:1 12-bit"),
.type = AVMEDIA_TYPE_VIDEO,
.id = AV_CODEC_ID_Y41P,
.capabilities = AV_CODEC_CAP_DR1,
.init = y41p_encode_init,
.encode2 = y41p_encode_frame,
.pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV411P,