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Use the mastering display metadata to do proper tone mapping for HDR content

This commit is contained in:
Sam Lantinga 2024-02-26 14:20:11 -08:00
parent 98b1a59a95
commit dc9a3c83e2
1 changed files with 22 additions and 14 deletions
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36
test/testffmpeg.c
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@ -640,6 +640,7 @@ static SDL_bool GetTextureForD3D11Frame(AVFrame *frame, SDL_Texture **texture)
}
if (!*texture || (UINT)texture_width != desc.Width || (UINT)texture_height != desc.Height) {
Uint32 format;
AVFrameSideData *pSideData;
switch (desc.Format) {
case DXGI_FORMAT_NV12:
@ -659,6 +660,16 @@ static SDL_bool GetTextureForD3D11Frame(AVFrame *frame, SDL_Texture **texture)
SDL_PropertiesID props = SDL_CreateProperties();
SDL_SetNumberProperty(props, SDL_PROP_TEXTURE_CREATE_COLORSPACE_NUMBER, GetFrameColorspace(frame));
pSideData = av_frame_get_side_data(frame, AV_FRAME_DATA_MASTERING_DISPLAY_METADATA);
if (pSideData) {
/* ITU-R BT.2408-6 recommends using an SDR white point of 203 nits, which is more likely for game content */
static const float k_flSDRWhitePoint = 203.0f;
AVMasteringDisplayMetadata *pMasteringDisplayMetadata = (AVMasteringDisplayMetadata *)pSideData->data;
float flMaxLuminance = (float)pMasteringDisplayMetadata->max_luminance.num / pMasteringDisplayMetadata->max_luminance.den;
SDL_SetFloatProperty(props, SDL_PROP_TEXTURE_CREATE_SDR_WHITE_POINT_FLOAT, k_flSDRWhitePoint);
SDL_SetFloatProperty(props, SDL_PROP_TEXTURE_CREATE_HDR_HEADROOM_FLOAT, flMaxLuminance / k_flSDRWhitePoint);
}
SDL_SetNumberProperty(props, SDL_PROP_TEXTURE_CREATE_FORMAT_NUMBER, format);
SDL_SetNumberProperty(props, SDL_PROP_TEXTURE_CREATE_ACCESS_NUMBER, SDL_TEXTUREACCESS_STATIC);
SDL_SetNumberProperty(props, SDL_PROP_TEXTURE_CREATE_WIDTH_NUMBER, desc.Width);
@ -692,6 +703,7 @@ static SDL_bool GetTextureForVideoToolboxFrame(AVFrame *frame, SDL_Texture **tex
size_t nPixelBufferHeight = CVPixelBufferGetHeightOfPlane(pPixelBuffer, 0);
SDL_PropertiesID props;
Uint32 format;
AVFrameSideData *pSideData;
switch (nPixelBufferType) {
case kCVPixelFormatType_420YpCbCr8BiPlanarVideoRange:
@ -719,6 +731,16 @@ static SDL_bool GetTextureForVideoToolboxFrame(AVFrame *frame, SDL_Texture **tex
props = SDL_CreateProperties();
SDL_SetNumberProperty(props, SDL_PROP_TEXTURE_CREATE_COLORSPACE_NUMBER, GetFrameColorspace(frame));
pSideData = av_frame_get_side_data(frame, AV_FRAME_DATA_MASTERING_DISPLAY_METADATA);
if (pSideData) {
/* ITU-R BT.2408-6 recommends using an SDR white point of 203 nits, which is more likely for game content */
static const float k_flSDRWhitePoint = 203.0f;
AVMasteringDisplayMetadata *pMasteringDisplayMetadata = (AVMasteringDisplayMetadata *)pSideData->data;
float flMaxLuminance = (float)pMasteringDisplayMetadata->max_luminance.num / pMasteringDisplayMetadata->max_luminance.den;
SDL_SetFloatProperty(props, SDL_PROP_TEXTURE_CREATE_SDR_WHITE_POINT_FLOAT, k_flSDRWhitePoint);
SDL_SetFloatProperty(props, SDL_PROP_TEXTURE_CREATE_HDR_HEADROOM_FLOAT, flMaxLuminance / k_flSDRWhitePoint);
}
SDL_SetNumberProperty(props, SDL_PROP_TEXTURE_CREATE_FORMAT_NUMBER, format);
SDL_SetNumberProperty(props, SDL_PROP_TEXTURE_CREATE_ACCESS_NUMBER, SDL_TEXTUREACCESS_STATIC);
SDL_SetNumberProperty(props, SDL_PROP_TEXTURE_CREATE_WIDTH_NUMBER, nPixelBufferWidth);
@ -754,20 +776,6 @@ static SDL_bool GetTextureForFrame(AVFrame *frame, SDL_Texture **texture)
static void DisplayVideoTexture(AVFrame *frame)
{
#if 0 /* This data doesn't seem to be valid in any of the videos I've tried */
AVFrameSideData *sd = av_frame_get_side_data(frame, AV_FRAME_DATA_MASTERING_DISPLAY_METADATA);
if (sd) {
AVMasteringDisplayMetadata *mdm = (AVMasteringDisplayMetadata *)sd->data;
mdm = mdm;
}
sd = av_frame_get_side_data(frame, AV_FRAME_DATA_CONTENT_LIGHT_LEVEL);
if (sd) {
AVContentLightMetadata *clm = (AVContentLightMetadata *)sd->data;
clm = clm;
}
#endif /* 0 */
/* Update the video texture */
if (!GetTextureForFrame(frame, &video_texture)) {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't get texture for frame: %s\n", SDL_GetError());