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avcodec/lcevcdec: avoid copying the input frame

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Based on the lcevc filter implementation.

Signed-off-by: James Almer <jamrial@gmail.com>
(cherry picked from commit b392d75cf7)
This commit is contained in:
James Almer 2025-12-22 21:53:47 -03:00
parent 4007d2a532
commit 044ca5f5ef
1 changed files with 7 additions and 30 deletions
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37
libavcodec/lcevcdec.c
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@ -47,10 +47,7 @@ static int alloc_base_frame(void *logctx, FFLCEVCContext *lcevc,
{
LCEVC_PictureDesc desc;
LCEVC_ColorFormat fmt = map_format(frame->format);
LCEVC_PictureLockHandle lock;
uint8_t *data[4] = { NULL };
int linesizes[4] = { 0 };
uint32_t planes;
LCEVC_PicturePlaneDesc planes[AV_VIDEO_MAX_PLANES] = { 0 };
LCEVC_ReturnCode res;
res = LCEVC_DefaultPictureDesc(&desc, fmt, frame->width, frame->height);
@ -64,36 +61,16 @@ static int alloc_base_frame(void *logctx, FFLCEVCContext *lcevc,
desc.sampleAspectRatioNum = frame->sample_aspect_ratio.num;
desc.sampleAspectRatioDen = frame->sample_aspect_ratio.den;
for (int i = 0; i < AV_VIDEO_MAX_PLANES; i++) {
planes[i].firstSample = frame->data[i];
planes[i].rowByteStride = frame->linesize[i];
}
/* Allocate LCEVC Picture */
res = LCEVC_AllocPicture(lcevc->decoder, &desc, picture);
res = LCEVC_AllocPictureExternal(lcevc->decoder, &desc, NULL, planes, picture);
if (res != LCEVC_Success) {
return AVERROR_EXTERNAL;
}
res = LCEVC_LockPicture(lcevc->decoder, *picture, LCEVC_Access_Write, &lock);
if (res != LCEVC_Success)
return AVERROR_EXTERNAL;
res = LCEVC_GetPicturePlaneCount(lcevc->decoder, *picture, &planes);
if (res != LCEVC_Success)
return AVERROR_EXTERNAL;
for (unsigned i = 0; i < planes; i++) {
LCEVC_PicturePlaneDesc plane;
res = LCEVC_GetPictureLockPlaneDesc(lcevc->decoder, lock, i, &plane);
if (res != LCEVC_Success)
return AVERROR_EXTERNAL;
data[i] = plane.firstSample;
linesizes[i] = plane.rowByteStride;
}
av_image_copy2(data, linesizes, frame->data, frame->linesize,
frame->format, frame->width, frame->height);
res = LCEVC_UnlockPicture(lcevc->decoder, lock);
if (res != LCEVC_Success)
return AVERROR_EXTERNAL;
return 0;
}