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[FFmpeg-devel,25/34] avcodec/libx264: Avoid copying packet data

Message ID HE1PR0301MB21540C6750201C0B4E591A718F439@HE1PR0301MB2154.eurprd03.prod.outlook.com
State New
Headers show
Series [FFmpeg-devel,01/34] avcodec/adpcmenc: Avoid copying packet data
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Commit Message

Andreas Rheinhardt April 25, 2021, 10:34 p.m. UTC
Here the packet size is known before allocating the packet because
the encoder provides said information (and works with internal buffers
itself), so one can pass this information to ff_alloc_packet2() to
avoid the implicit use of another intermediate buffer for the packet data.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
---
 libavcodec/libx264.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/libavcodec/libx264.c b/libavcodec/libx264.c
index 4ddc4973a4..b23471a809 100644
--- a/libavcodec/libx264.c
+++ b/libavcodec/libx264.c
@@ -144,7 +144,7 @@  static int encode_nals(AVCodecContext *ctx, AVPacket *pkt,
     for (i = 0; i < nnal; i++)
         size += nals[i].i_payload;
 
-    if ((ret = ff_alloc_packet2(ctx, pkt, size, 0)) < 0)
+    if ((ret = ff_alloc_packet2(ctx, pkt, size, size)) < 0)
         return ret;
 
     p = pkt->data;