static int dxva2_transfer_data_from(AVHWFramesContext *ctx, AVFrame *dst,
const AVFrame *src)
{
AVFrame *map;
ptrdiff_t src_linesize[4], dst_linesize[4];
int ret, i;
if (dst->format != ctx->sw_format)
return AVERROR(ENOSYS);
map = av_frame_alloc();
if (!map)
return AVERROR(ENOMEM);
map->format = dst->format;
ret = dxva2_map_frame(ctx, map, src, AV_HWFRAME_MAP_READ);
if (ret < 0)
goto fail;
for (i = 0; i < 4; i++) {
dst_linesize[i] = dst->linesize[i];
src_linesize[i] = map->linesize[i];
}
av_image_copy_uc_from(dst->data, dst_linesize, map->data, src_linesize,
ctx->sw_format, src->width, src->height);
fail:
av_frame_free(&map);
return ret;
}
static int dxva2_transfer_data_to(AVHWFramesContext *ctx, AVFrame *dst,
const AVFrame *src)
{
AVFrame *map;
int ret;
if (src->format != ctx->sw_format)
return AVERROR(ENOSYS);
map = av_frame_alloc();
if (!map)
return AVERROR(ENOMEM);
map->format = dst->format;
ret = dxva2_map_frame(ctx, map, dst, AV_HWFRAME_MAP_WRITE | AV_HWFRAME_MAP_OVERWRITE);
if (ret < 0)
goto fail;
av_image_copy(map->data, map->linesize, src->data, src->linesize,
ctx->sw_format, src->width, src->height);
fail:
av_frame_free(&map);
return ret;
}
static int dxva2_transfer_data(AVHWFramesContext *ctx, AVFrame *dst,
const AVFrame *src)
{
int download = !!src->hw_frames_ctx;
AVFrame *map;
int ret, i;
map = av_frame_alloc();
if (!map)
return AVERROR(ENOMEM);
map->format = dst->format;
ret = dxva2_map_frame(ctx, map, download ? src : dst,
download ? AV_HWFRAME_MAP_READ : AV_HWFRAME_MAP_WRITE);
if (ret < 0)
goto fail;
if (download) {
ptrdiff_t src_linesize[4], dst_linesize[4];
for (i = 0; i < 4; i++) {
dst_linesize[i] = dst->linesize[i];
src_linesize[i] = map->linesize[i];
}
av_image_copy_uc_from(dst->data, dst_linesize, map->data, src_linesize,
ctx->sw_format, src->width, src->height);
} else {
av_image_copy(map->data, map->linesize, src->data, src->linesize,
ctx->sw_format, src->width, src->height);
}
fail:
av_frame_free(&map);
return ret;
}
static int dxva2_map_from(AVHWFramesContext *ctx,
AVFrame *dst, const AVFrame *src, int flags)
{
int err;
err = dxva2_map_frame(ctx, dst, src, flags);
if (err < 0)
return err;
err = av_frame_copy_props(dst, src);
if (err < 0)
return err;
return 0;
}
static int dxva2_map_from(AVHWFramesContext *ctx,
AVFrame *dst, const AVFrame *src, int flags)
{
int err;
if (dst->format != AV_PIX_FMT_NONE && dst->format != ctx->sw_format)
return AVERROR(ENOSYS);
dst->format = ctx->sw_format;
err = dxva2_map_frame(ctx, dst, src, flags);
if (err < 0)
return err;
err = av_frame_copy_props(dst, src);
if (err < 0)
return err;
return 0;
}