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vtenc: Set colorimetry information
It looks like VideoToolbox doesn't support all our colorimetries. Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1214>
This commit is contained in:
Nirbheek Chauhan
GStreamer Marge Bot
parent
0f0e68080c
commit
4e37f99975
1 changed files with 111 additions and 0 deletions
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@ -904,6 +904,115 @@ gst_vtenc_flush (GstVideoEncoder * enc)
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return (ret == GST_FLOW_OK);
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return (ret == GST_FLOW_OK);
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}
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}
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static void
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gst_vtenc_set_colorimetry (GstVTEnc * self, VTCompressionSessionRef session)
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{
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OSStatus status;
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CFStringRef primaries = NULL, transfer = NULL, matrix = NULL;
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GstVideoColorimetry cm = GST_VIDEO_INFO_COLORIMETRY (&self->video_info);
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/*
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* https://developer.apple.com/documentation/corevideo/cvimagebuffer/image_buffer_ycbcr_matrix_constants
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*/
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switch (cm.matrix) {
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case GST_VIDEO_COLOR_MATRIX_BT709:
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matrix = kCVImageBufferYCbCrMatrix_ITU_R_709_2;
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break;
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case GST_VIDEO_COLOR_MATRIX_BT601:
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matrix = kCVImageBufferYCbCrMatrix_ITU_R_601_4;
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break;
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case GST_VIDEO_COLOR_MATRIX_SMPTE240M:
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matrix = kCVImageBufferYCbCrMatrix_SMPTE_240M_1995;
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break;
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case GST_VIDEO_COLOR_MATRIX_BT2020:
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matrix = kCVImageBufferYCbCrMatrix_ITU_R_2020;
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break;
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default:
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GST_WARNING_OBJECT (self, "Unsupported color matrix %u", cm.matrix);
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}
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/*
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* https://developer.apple.com/documentation/corevideo/cvimagebuffer/image_buffer_transfer_function_constants
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*/
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switch (cm.transfer) {
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case GST_VIDEO_TRANSFER_BT709:
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case GST_VIDEO_TRANSFER_BT601:
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case GST_VIDEO_TRANSFER_UNKNOWN:
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transfer = kCVImageBufferTransferFunction_ITU_R_709_2;
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break;
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case GST_VIDEO_TRANSFER_SMPTE240M:
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transfer = kCVImageBufferTransferFunction_SMPTE_240M_1995;
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break;
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case GST_VIDEO_TRANSFER_BT2020_12:
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transfer = kCVImageBufferTransferFunction_ITU_R_2020;
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break;
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case GST_VIDEO_TRANSFER_SRGB:
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if (__builtin_available (macOS 10.13, *))
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transfer = kCVImageBufferTransferFunction_sRGB;
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else
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GST_WARNING_OBJECT (self, "macOS version is too old, the sRGB transfer "
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"function is not available");
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break;
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case GST_VIDEO_TRANSFER_SMPTE2084:
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if (__builtin_available (macOS 10.13, *))
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transfer = kCVImageBufferTransferFunction_SMPTE_ST_2084_PQ;
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else
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GST_WARNING_OBJECT (self, "macOS version is too old, the SMPTE2084 "
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"transfer function is not available");
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break;
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default:
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GST_WARNING_OBJECT (self, "Unsupported color transfer %u", cm.transfer);
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}
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/*
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* https://developer.apple.com/documentation/corevideo/cvimagebuffer/image_buffer_color_primaries_constants
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*/
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switch (cm.primaries) {
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case GST_VIDEO_COLOR_PRIMARIES_BT709:
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primaries = kCVImageBufferColorPrimaries_ITU_R_709_2;
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break;
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case GST_VIDEO_COLOR_PRIMARIES_SMPTE170M:
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case GST_VIDEO_COLOR_PRIMARIES_SMPTE240M:
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primaries = kCVImageBufferColorPrimaries_SMPTE_C;
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break;
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case GST_VIDEO_COLOR_PRIMARIES_BT2020:
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primaries = kCVImageBufferColorPrimaries_ITU_R_2020;
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break;
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case GST_VIDEO_COLOR_PRIMARIES_SMPTERP431:
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primaries = kCVImageBufferColorPrimaries_DCI_P3;
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break;
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case GST_VIDEO_COLOR_PRIMARIES_SMPTEEG432:
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primaries = kCVImageBufferColorPrimaries_P3_D65;
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break;
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case GST_VIDEO_COLOR_PRIMARIES_EBU3213:
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primaries = kCVImageBufferColorPrimaries_EBU_3213;
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break;
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default:
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GST_WARNING_OBJECT (self, "Unsupported color primaries %u", cm.primaries);
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}
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if (primaries) {
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status = VTSessionSetProperty (session,
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kVTCompressionPropertyKey_ColorPrimaries, primaries);
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GST_DEBUG_OBJECT (self, "kVTCompressionPropertyKey_ColorPrimaries =>"
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"%d", status);
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}
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if (transfer) {
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status = VTSessionSetProperty (session,
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kVTCompressionPropertyKey_TransferFunction, transfer);
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GST_DEBUG_OBJECT (self, "kVTCompressionPropertyKey_TransferFunction =>"
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"%d", status);
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}
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if (matrix) {
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status = VTSessionSetProperty (session,
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kVTCompressionPropertyKey_YCbCrMatrix, matrix);
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GST_DEBUG_OBJECT (self, "kVTCompressionPropertyKey_YCbCrMatrix => %d",
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status);
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}
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}
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static VTCompressionSessionRef
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static VTCompressionSessionRef
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gst_vtenc_create_session (GstVTEnc * self)
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gst_vtenc_create_session (GstVTEnc * self)
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{
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{
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@ -977,6 +1086,8 @@ gst_vtenc_create_session (GstVTEnc * self)
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gst_vtenc_get_bitrate (self));
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gst_vtenc_get_bitrate (self));
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}
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}
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gst_vtenc_set_colorimetry (self, session);
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gst_vtenc_session_configure_realtime (self, session,
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gst_vtenc_session_configure_realtime (self, session,
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gst_vtenc_get_realtime (self));
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gst_vtenc_get_realtime (self));
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gst_vtenc_session_configure_allow_frame_reordering (self, session,
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gst_vtenc_session_configure_allow_frame_reordering (self, session,
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