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Don't request IDR frame if the HDR metadata change was a no-op

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Cameron Gutman
2023-03-04 12:11:33 -06:00
parent 64803d9715
commit bdb7d08c57
1 changed files with 57 additions and 42 deletions
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99
Limelight/Stream/VideoDecoderRenderer.m
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@@ -376,56 +376,71 @@ int DrSubmitDecodeUnit(PDECODE_UNIT decodeUnit);
}
- (void)setHdrMode:(BOOL)enabled {
// Free old metadata
masteringDisplayColorVolume = nil;
contentLightLevelInfo = nil;
// Update metadata from host if provided
SS_HDR_METADATA hdrMetadata;
if (enabled && LiGetHdrMetadata(&hdrMetadata)) {
if (hdrMetadata.displayPrimaries[0].x != 0 && hdrMetadata.maxDisplayLuminance != 0) {
// This data is all in big-endian
struct {
vector_ushort2 primaries[3];
vector_ushort2 white_point;
uint32_t luminance_max;
uint32_t luminance_min;
} __attribute__((packed, aligned(4))) mdcv;
BOOL hasMetadata = enabled && LiGetHdrMetadata(&hdrMetadata);
BOOL metadataChanged = NO;
if (hasMetadata && hdrMetadata.displayPrimaries[0].x != 0 && hdrMetadata.maxDisplayLuminance != 0) {
// This data is all in big-endian
struct {
vector_ushort2 primaries[3];
vector_ushort2 white_point;
uint32_t luminance_max;
uint32_t luminance_min;
} __attribute__((packed, aligned(4))) mdcv;
// mdcv is in GBR order while SS_HDR_METADATA is in RGB order
mdcv.primaries[0].x = __builtin_bswap16(hdrMetadata.displayPrimaries[1].x);
mdcv.primaries[0].y = __builtin_bswap16(hdrMetadata.displayPrimaries[1].y);
mdcv.primaries[1].x = __builtin_bswap16(hdrMetadata.displayPrimaries[2].x);
mdcv.primaries[1].y = __builtin_bswap16(hdrMetadata.displayPrimaries[2].y);
mdcv.primaries[2].x = __builtin_bswap16(hdrMetadata.displayPrimaries[0].x);
mdcv.primaries[2].y = __builtin_bswap16(hdrMetadata.displayPrimaries[0].y);
// mdcv is in GBR order while SS_HDR_METADATA is in RGB order
mdcv.primaries[0].x = __builtin_bswap16(hdrMetadata.displayPrimaries[1].x);
mdcv.primaries[0].y = __builtin_bswap16(hdrMetadata.displayPrimaries[1].y);
mdcv.primaries[1].x = __builtin_bswap16(hdrMetadata.displayPrimaries[2].x);
mdcv.primaries[1].y = __builtin_bswap16(hdrMetadata.displayPrimaries[2].y);
mdcv.primaries[2].x = __builtin_bswap16(hdrMetadata.displayPrimaries[0].x);
mdcv.primaries[2].y = __builtin_bswap16(hdrMetadata.displayPrimaries[0].y);
mdcv.white_point.x = __builtin_bswap16(hdrMetadata.whitePoint.x);
mdcv.white_point.y = __builtin_bswap16(hdrMetadata.whitePoint.y);
mdcv.white_point.x = __builtin_bswap16(hdrMetadata.whitePoint.x);
mdcv.white_point.y = __builtin_bswap16(hdrMetadata.whitePoint.y);
// These luminance values are in 10000ths of a nit
mdcv.luminance_max = __builtin_bswap32((uint32_t)hdrMetadata.maxDisplayLuminance * 10000);
mdcv.luminance_min = __builtin_bswap32(hdrMetadata.minDisplayLuminance);
// These luminance values are in 10000ths of a nit
mdcv.luminance_max = __builtin_bswap32((uint32_t)hdrMetadata.maxDisplayLuminance * 10000);
mdcv.luminance_min = __builtin_bswap32(hdrMetadata.minDisplayLuminance);
masteringDisplayColorVolume = [NSData dataWithBytes:&mdcv length:sizeof(mdcv)];
}
if (hdrMetadata.maxContentLightLevel != 0 && hdrMetadata.maxFrameAverageLightLevel != 0) {
// This data is all in big-endian
struct {
uint16_t max_content_light_level;
uint16_t max_frame_average_light_level;
} __attribute__((packed, aligned(2))) cll;
cll.max_content_light_level = __builtin_bswap16(hdrMetadata.maxContentLightLevel);
cll.max_frame_average_light_level = __builtin_bswap16(hdrMetadata.maxFrameAverageLightLevel);
contentLightLevelInfo = [NSData dataWithBytes:&cll length:sizeof(cll)];
NSData* newMdcv = [NSData dataWithBytes:&mdcv length:sizeof(mdcv)];
if (masteringDisplayColorVolume == nil || ![newMdcv isEqualToData:masteringDisplayColorVolume]) {
masteringDisplayColorVolume = newMdcv;
metadataChanged = YES;
}
}
else if (masteringDisplayColorVolume != nil) {
masteringDisplayColorVolume = nil;
metadataChanged = YES;
}
// Request an IDR frame to trigger us to re-create the format with the adjusted metadata
LiRequestIdrFrame();
if (hasMetadata && hdrMetadata.maxContentLightLevel != 0 && hdrMetadata.maxFrameAverageLightLevel != 0) {
// This data is all in big-endian
struct {
uint16_t max_content_light_level;
uint16_t max_frame_average_light_level;
} __attribute__((packed, aligned(2))) cll;
cll.max_content_light_level = __builtin_bswap16(hdrMetadata.maxContentLightLevel);
cll.max_frame_average_light_level = __builtin_bswap16(hdrMetadata.maxFrameAverageLightLevel);
NSData* newCll = [NSData dataWithBytes:&cll length:sizeof(cll)];
if (contentLightLevelInfo == nil || ![newCll isEqualToData:contentLightLevelInfo]) {
contentLightLevelInfo = newCll;
metadataChanged = YES;
}
}
else if (contentLightLevelInfo != nil) {
contentLightLevelInfo = nil;
metadataChanged = YES;
}
// If the metadata changed, request an IDR frame to re-create the CMVideoFormatDescription
if (metadataChanged) {
LiRequestIdrFrame();
}
}
@end