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display/drm: Correctly handle video frames larger than fb

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This commit is contained in:
Martin Piatka
2024-04-30 13:24:41 +02:00
parent 77f6a3303e
commit c24da809ba
1 changed files with 10 additions and 3 deletions
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13
src/video_display/drm.cpp
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@@ -570,6 +570,8 @@ static Framebuffer create_dumb_fb(int dri, int width, int height, uint32_t pix_f
return {};
}
handle.handle = create_info.handle;
buf.width = width;
buf.height = height;
buf.pitch = create_info.pitch;
buf.size = create_info.size;
handle.dri_fd = dri;
@@ -637,15 +639,20 @@ static void draw_splash(drm_display_state *s){
static void draw_frame(Framebuffer *dst, video_frame *src, int x = 0, int y = 0){
auto dst_p = static_cast<char *>(dst->map.get());
auto src_p = static_cast<char *>(src->tiles[0].data);
auto linesize = vc_get_linesize(src->tiles[0].width, src->color_spec);
int width = std::min(src->tiles[0].width, dst->width - x);
int height = std::min(src->tiles[0].height, dst->height - y);
auto src_pitch = vc_get_linesize(src->tiles[0].width, src->color_spec);
auto linesize = vc_get_size(width, src->color_spec);
dst_p += dst->pitch * y;
dst_p += vc_get_size(x, src->color_spec);
for(unsigned y = 0; y < src->tiles[0].height; y++){
for(unsigned y = 0; y < height; y++){
memcpy(dst_p, src_p, linesize);
dst_p += dst->pitch;
src_p += linesize;
src_p += src_pitch;
}
}