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avcodec/xwdenc: 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>
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@ -24,6 +24,7 @@
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#include "libavutil/pixdesc.h"
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#include "avcodec.h"
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#include "bytestream.h"
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#include "encode.h"
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#include "internal.h"
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#include "xwd.h"
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@ -147,7 +148,7 @@ static int xwd_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
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header_size = XWD_HEADER_SIZE + WINDOW_NAME_SIZE;
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out_size = header_size + ncolors * XWD_CMAP_SIZE + avctx->height * lsize;
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if ((ret = ff_alloc_packet2(avctx, pkt, out_size, 0)) < 0)
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if ((ret = ff_get_encode_buffer(avctx, pkt, out_size, 0)) < 0)
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return ret;
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buf = pkt->data;
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@ -220,6 +221,7 @@ const AVCodec ff_xwd_encoder = {
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.long_name = NULL_IF_CONFIG_SMALL("XWD (X Window Dump) image"),
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.type = AVMEDIA_TYPE_VIDEO,
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.id = AV_CODEC_ID_XWD,
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.capabilities = AV_CODEC_CAP_DR1,
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.encode2 = xwd_encode_frame,
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.pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_BGRA,
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AV_PIX_FMT_RGBA,
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