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Sun, 25 Apr 2021 22:35:41 +0000 X-MS-PublicTrafficType: Email X-IncomingHeaderCount: 48 X-EOPAttributedMessage: 0 X-MS-Office365-Filtering-Correlation-Id: 61f809a0-7e0b-4340-714e-08d9083a7544 X-MS-Exchange-SLBlob-MailProps: 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 X-MS-TrafficTypeDiagnostic: HE1EUR01HT158: X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: BwSavYkjQmSQHxIT/YhBrMHvWGiqriNPOXkzA/yQzygFYr9RfISa1yYoPe76WWb1Xabopj+oWTYE5Epo1/cGUCiY1zuh0LMxjl/LXo6nYb7OiaZs8vPVlvqNW2pK8UcotbD7WFbO8yH2NvFO06KscmdWbWP7l7Uz9MlVpNRgV6DcGNSAYWwIv/zAIJbSM9ppFNR5+qwCLv/7OwkxGpuDO3VuPpLL+BM2zm0bPdxZzIijkh2ovGsv6eeNVIJTZ3WLK7+cbHF6x6/IjtIzXeSJBAhDkDqsY+yjtyiAvMFnudug8AqD/gZpjBxtnc208vN+ZQOLsDPZR+fYQFzyIbBBaNoZB6mj5dA1HxRgMvN5ifeQit7M7+tThE7ZBiog8B6UsIXPv2PJdSOHeCL7eTuYwQ== X-MS-Exchange-AntiSpam-MessageData: 1j8/U7eBAD9+c09byFGyyVjTkgVL1wzpmGFLEApvHHdpIbYxCfUX5WC1LOthD+FQSc0RmEy4xtNnwEzP42UcYwxDgyWkaC38IA26CTFZrdyTkuZAye5/ItgkUcBY7o5+yiP/9Xmr8ZNqZsmpm4BTNA== X-OriginatorOrg: outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: 61f809a0-7e0b-4340-714e-08d9083a7544 X-MS-Exchange-CrossTenant-OriginalArrivalTime: 25 Apr 2021 22:35:42.0300 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 84df9e7f-e9f6-40af-b435-aaaaaaaaaaaa X-MS-Exchange-CrossTenant-AuthSource: HE1EUR01FT054.eop-EUR01.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: Internet X-MS-Exchange-CrossTenant-RMS-PersistedConsumerOrg: 00000000-0000-0000-0000-000000000000 X-MS-Exchange-Transport-CrossTenantHeadersStamped: HE1EUR01HT158 Subject: [FFmpeg-devel] [PATCH 22/34] avcodec/yuv4enc: Avoid copying packet data X-BeenThere: ffmpeg-devel@ffmpeg.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: FFmpeg development discussions and patches List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: FFmpeg development discussions and patches Cc: Andreas Rheinhardt Errors-To: ffmpeg-devel-bounces@ffmpeg.org Sender: "ffmpeg-devel" X-TUID: okxTY1EHh8nV When the packet size is known in advance like here, one can avoid an intermediate buffer for the packet data. Signed-off-by: Andreas Rheinhardt --- libavcodec/yuv4enc.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/libavcodec/yuv4enc.c b/libavcodec/yuv4enc.c index 63a7fae964..5096f81e1a 100644 --- a/libavcodec/yuv4enc.c +++ b/libavcodec/yuv4enc.c @@ -26,11 +26,12 @@ static int yuv4_encode_frame(AVCodecContext *avctx, AVPacket *pkt, const AVFrame *pic, int *got_packet) { + int64_t size = 6 * (avctx->width + 1 >> 1) * (avctx->height + 1 >> 1); uint8_t *dst; uint8_t *y, *u, *v; int i, j, ret; - if ((ret = ff_alloc_packet2(avctx, pkt, 6 * (avctx->width + 1 >> 1) * (avctx->height + 1 >> 1), 0)) < 0) + if ((ret = ff_alloc_packet2(avctx, pkt, size, size)) < 0) return ret; dst = pkt->data;