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avcodec/xfaceenc: 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 14407e84b9
commit b66ca3b8d4
1 changed files with 3 additions and 1 deletions
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4
libavcodec/xfaceenc.c
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@ -26,6 +26,7 @@
#include "xface.h"
#include "avcodec.h"
#include "encode.h"
#include "internal.h"
#include "libavutil/avassert.h"
@ -195,7 +196,7 @@ static int xface_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
intbuf[i++] = r + XFACE_FIRST_PRINT;
}
if ((ret = ff_alloc_packet2(avctx, pkt, i+2, 0)) < 0)
if ((ret = ff_get_encode_buffer(avctx, pkt, i + 2, 0)) < 0)
return ret;
/* revert the number, and close the buffer */
@ -216,6 +217,7 @@ const AVCodec ff_xface_encoder = {
.long_name = NULL_IF_CONFIG_SMALL("X-face image"),
.type = AVMEDIA_TYPE_VIDEO,
.id = AV_CODEC_ID_XFACE,
.capabilities = AV_CODEC_CAP_DR1,
.priv_data_size = sizeof(XFaceContext),
.encode2 = xface_encode_frame,
.pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_MONOWHITE, AV_PIX_FMT_NONE },