mirror of
https://github.com/moonlight-stream/moonlight-ios.git
synced 2025-07-01 23:35:59 +00:00
Rework CMVideoFormatDescription handling to fix several bugs
- Populate CMVideoFormatDescription with data parsed directly from sequence header OBU - Recreate AV1 CMVideoFormatDescription for each IDR frame (same as H.264/HEVC) to fix HDR-SDR transitions - Fixed leaking the format description on each IDR frame
This commit is contained in:
Cameron Gutman
parent
c51caba1ec
commit
089b424f65
@ -9,6 +9,9 @@
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#import "VideoDecoderRenderer.h"
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#import "StreamView.h"
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#include <libavcodec/avcodec.h>
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#include <libavcodec/cbs.h>
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#include <libavcodec/cbs_av1.h>
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#include <libavformat/avio.h>
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#include <libavutil/mem.h>
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@ -22,7 +25,7 @@ extern int ff_isom_write_av1c(AVIOContext *pb, const uint8_t *buf, int size,
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float _streamAspectRatio;
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AVSampleBufferDisplayLayer* displayLayer;
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int videoFormat, videoWidth, videoHeight;
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int videoFormat;
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int frameRate;
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NSMutableArray *parameterSetBuffers;
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@ -93,8 +96,6 @@ extern int ff_isom_write_av1c(AVIOContext *pb, const uint8_t *buf, int size,
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- (void)setupWithVideoFormat:(int)videoFormat width:(int)videoWidth height:(int)videoHeight frameRate:(int)frameRate
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{
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self->videoFormat = videoFormat;
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self->videoWidth = videoWidth;
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self->videoHeight = videoHeight;
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self->frameRate = frameRate;
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}
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@ -190,8 +191,8 @@ int DrSubmitDecodeUnit(PDECODE_UNIT decodeUnit);
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Log(LOG_E, @"avio_open_dyn_buf() failed: %d", err);
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return nil;
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}
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// The sequence header and any metadata OBUs should always fit in the first buffer
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// Submit the IDR frame to write the av1C blob
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err = ff_isom_write_av1c(ioctx, (uint8_t*)frameData.bytes, (int)frameData.length, 1);
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if (err < 0) {
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Log(LOG_E, @"ff_isom_write_av1c() failed: %d", err);
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@ -218,47 +219,153 @@ int DrSubmitDecodeUnit(PDECODE_UNIT decodeUnit);
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}
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// Much of this logic comes from Chrome
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- (NSDictionary*)createAV1FormatExtensionsDictionaryForDU:(PDECODE_UNIT)du frameData:(NSData*)frameData {
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- (CMVideoFormatDescriptionRef)createAV1FormatDescriptionForIDRFrame:(NSData*)frameData {
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NSMutableDictionary* extensions = [[NSMutableDictionary alloc] init];
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extensions[(__bridge NSString*)kCMFormatDescriptionExtension_FormatName] = @"av01";
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CodedBitstreamContext* cbsCtx = NULL;
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int err = ff_cbs_init(&cbsCtx, AV_CODEC_ID_AV1, NULL);
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if (err < 0) {
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Log(LOG_E, @"ff_cbs_init() failed: %d", err);
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return nil;
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}
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AVPacket avPacket = {};
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avPacket.data = (uint8_t*)frameData.bytes;
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avPacket.size = (int)frameData.length;
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// Read the sequence header OBU
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CodedBitstreamFragment cbsFrag = {};
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err = ff_cbs_read_packet(cbsCtx, &cbsFrag, &avPacket);
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if (err < 0) {
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Log(LOG_E, @"ff_cbs_read_packet() failed: %d", err);
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ff_cbs_close(&cbsCtx);
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return nil;
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}
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#define SET_CFSTR_EXTENSION(key, value) extensions[(__bridge NSString*)key] = (__bridge NSString*)(value)
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#define SET_EXTENSION(key, value) extensions[(__bridge NSString*)key] = (value)
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SET_EXTENSION(kCMFormatDescriptionExtension_FormatName, @"av01");
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// We use the value for YUV without alpha, same as Chrome
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// https://developer.apple.com/library/archive/qa/qa1183/_index.html
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extensions[(__bridge NSString*)kCMFormatDescriptionExtension_Depth] = @24;
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switch (du->colorspace) {
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SET_EXTENSION(kCMFormatDescriptionExtension_Depth, @24);
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CodedBitstreamAV1Context* bitstreamCtx = (CodedBitstreamAV1Context*)cbsCtx->priv_data;
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AV1RawSequenceHeader* seqHeader = bitstreamCtx->sequence_header;
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switch (seqHeader->color_config.color_primaries) {
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case 1: // CP_BT_709
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SET_CFSTR_EXTENSION(kCMFormatDescriptionExtension_ColorPrimaries,
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kCMFormatDescriptionColorPrimaries_ITU_R_709_2);
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break;
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case 6: // CP_BT_601
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SET_CFSTR_EXTENSION(kCMFormatDescriptionExtension_ColorPrimaries,
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kCMFormatDescriptionColorPrimaries_SMPTE_C);
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break;
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case 9: // CP_BT_2020
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SET_CFSTR_EXTENSION(kCMFormatDescriptionExtension_ColorPrimaries,
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kCMFormatDescriptionColorPrimaries_ITU_R_2020);
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break;
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default:
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case COLORSPACE_REC_601:
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extensions[(__bridge NSString*)kCMFormatDescriptionExtension_ColorPrimaries] = (__bridge NSString*)kCMFormatDescriptionColorPrimaries_SMPTE_C;
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extensions[(__bridge NSString*)kCMFormatDescriptionExtension_TransferFunction] = (__bridge NSString*)kCMFormatDescriptionTransferFunction_ITU_R_709_2;
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extensions[(__bridge NSString*)kCMFormatDescriptionExtension_YCbCrMatrix] = (__bridge NSString*)kCMFormatDescriptionYCbCrMatrix_ITU_R_601_4;
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break;
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case COLORSPACE_REC_709:
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extensions[(__bridge NSString*)kCMFormatDescriptionExtension_ColorPrimaries] = (__bridge NSString*)kCMFormatDescriptionColorPrimaries_ITU_R_709_2;
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extensions[(__bridge NSString*)kCMFormatDescriptionExtension_TransferFunction] = (__bridge NSString*)kCMFormatDescriptionTransferFunction_ITU_R_709_2;
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extensions[(__bridge NSString*)kCMFormatDescriptionExtension_YCbCrMatrix] = (__bridge NSString*)kCMFormatDescriptionTransferFunction_ITU_R_709_2;
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break;
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case COLORSPACE_REC_2020:
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extensions[(__bridge NSString*)kCMFormatDescriptionExtension_ColorPrimaries] = (__bridge NSString*)kCMFormatDescriptionColorPrimaries_ITU_R_2020;
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extensions[(__bridge NSString*)kCMFormatDescriptionExtension_YCbCrMatrix] = (__bridge NSString*)kCMFormatDescriptionYCbCrMatrix_ITU_R_2020;
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if (du->hdrActive) {
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extensions[(__bridge NSString*)kCMFormatDescriptionExtension_TransferFunction] = (__bridge NSString*)kCMFormatDescriptionTransferFunction_SMPTE_ST_2084_PQ;
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}
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else {
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extensions[(__bridge NSString*)kCMFormatDescriptionExtension_TransferFunction] = (__bridge NSString*)kCMFormatDescriptionTransferFunction_ITU_R_2020;
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}
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Log(LOG_W, @"Unsupported color_primaries value: %d", seqHeader->color_config.color_primaries);
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break;
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}
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extensions[(__bridge NSString*)kCMFormatDescriptionExtension_FullRangeVideo] = @(NO);
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switch (seqHeader->color_config.transfer_characteristics) {
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case 1: // TC_BT_709
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case 6: // TC_BT_601
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SET_CFSTR_EXTENSION(kCMFormatDescriptionExtension_TransferFunction,
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kCMFormatDescriptionTransferFunction_ITU_R_709_2);
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break;
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case 7: // TC_SMPTE_240
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SET_CFSTR_EXTENSION(kCMFormatDescriptionExtension_TransferFunction,
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kCMFormatDescriptionTransferFunction_SMPTE_240M_1995);
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break;
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case 8: // TC_LINEAR
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SET_CFSTR_EXTENSION(kCMFormatDescriptionExtension_TransferFunction,
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kCMFormatDescriptionTransferFunction_Linear);
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break;
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case 14: // TC_BT_2020_10_BIT
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case 15: // TC_BT_2020_12_BIT
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SET_CFSTR_EXTENSION(kCMFormatDescriptionExtension_TransferFunction,
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kCMFormatDescriptionTransferFunction_ITU_R_2020);
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break;
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case 16: // TC_SMPTE_2084
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SET_CFSTR_EXTENSION(kCMFormatDescriptionExtension_TransferFunction,
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kCMFormatDescriptionTransferFunction_SMPTE_ST_2084_PQ);
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break;
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case 17: // TC_HLG
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SET_CFSTR_EXTENSION(kCMFormatDescriptionExtension_TransferFunction,
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kCMFormatDescriptionTransferFunction_ITU_R_2100_HLG);
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break;
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default:
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Log(LOG_W, @"Unsupported transfer_characteristics value: %d", seqHeader->color_config.transfer_characteristics);
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break;
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}
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switch (seqHeader->color_config.matrix_coefficients) {
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case 1: // MC_BT_709
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SET_CFSTR_EXTENSION(kCMFormatDescriptionExtension_YCbCrMatrix,
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kCMFormatDescriptionYCbCrMatrix_ITU_R_709_2);
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break;
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case 6: // MC_BT_601
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SET_CFSTR_EXTENSION(kCMFormatDescriptionExtension_YCbCrMatrix,
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kCMFormatDescriptionYCbCrMatrix_ITU_R_601_4);
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break;
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case 7: // MC_SMPTE_240
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SET_CFSTR_EXTENSION(kCMFormatDescriptionExtension_YCbCrMatrix,
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kCMFormatDescriptionYCbCrMatrix_SMPTE_240M_1995);
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break;
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case 9: // MC_BT_2020_NCL
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SET_CFSTR_EXTENSION(kCMFormatDescriptionExtension_YCbCrMatrix,
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kCMFormatDescriptionYCbCrMatrix_ITU_R_2020);
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break;
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default:
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Log(LOG_W, @"Unsupported matrix_coefficients value: %d", seqHeader->color_config.matrix_coefficients);
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break;
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}
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SET_EXTENSION(kCMFormatDescriptionExtension_FullRangeVideo, @(seqHeader->color_config.color_range == 1));
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// Progressive content
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SET_EXTENSION(kCMFormatDescriptionExtension_FieldCount, @(1));
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switch (seqHeader->color_config.chroma_sample_position) {
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case 1: // CSP_VERTICAL
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SET_CFSTR_EXTENSION(kCMFormatDescriptionExtension_ChromaLocationTopField,
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kCMFormatDescriptionChromaLocation_Left);
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break;
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case 2: // CSP_COLOCATED
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SET_CFSTR_EXTENSION(kCMFormatDescriptionExtension_ChromaLocationTopField,
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kCMFormatDescriptionChromaLocation_TopLeft);
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break;
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default:
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Log(LOG_W, @"Unsupported chroma_sample_position value: %d", seqHeader->color_config.chroma_sample_position);
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break;
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}
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if (contentLightLevelInfo) {
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extensions[(__bridge NSString*)kCMFormatDescriptionExtension_ContentLightLevelInfo] = contentLightLevelInfo;
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SET_EXTENSION(kCMFormatDescriptionExtension_ContentLightLevelInfo, contentLightLevelInfo);
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}
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if (masteringDisplayColorVolume) {
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extensions[(__bridge NSString*)kCMFormatDescriptionExtension_MasteringDisplayColorVolume] = masteringDisplayColorVolume;
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SET_EXTENSION(kCMFormatDescriptionExtension_MasteringDisplayColorVolume, masteringDisplayColorVolume);
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}
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// Referenced the VP9 code in Chrome that performs a similar function
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@ -267,9 +374,25 @@ int DrSubmitDecodeUnit(PDECODE_UNIT decodeUnit);
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@{
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@"av1C" : [self getAv1CodecConfigurationBox:frameData],
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};
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extensions[@"BitsPerComponent"] = @((videoFormat & VIDEO_FORMAT_MASK_10BIT) ? 10 : 8);
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extensions[@"BitsPerComponent"] = @(bitstreamCtx->bit_depth);
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return extensions;
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#undef SET_EXTENSION
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#undef SET_CFSTR_EXTENSION
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// AV1 doesn't have a special format description function like H.264 and HEVC have, so we just use the generic one
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CMVideoFormatDescriptionRef formatDesc = NULL;
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OSStatus status = CMVideoFormatDescriptionCreate(kCFAllocatorDefault, kCMVideoCodecType_AV1,
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bitstreamCtx->frame_width, bitstreamCtx->frame_height,
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(__bridge CFDictionaryRef)extensions,
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&formatDesc);
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if (status != noErr) {
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Log(LOG_E, @"Failed to create AV1 format description: %d", (int)status);
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formatDesc = NULL;
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}
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ff_cbs_fragment_free(&cbsFrag);
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ff_cbs_close(&cbsCtx);
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return formatDesc;
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}
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// This function must free data for bufferType == BUFFER_TYPE_PICDATA
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@ -284,9 +407,6 @@ int DrSubmitDecodeUnit(PDECODE_UNIT decodeUnit);
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// Add new parameter set into the parameter set array
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int startLen = data[2] == 0x01 ? 3 : 4;
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[parameterSetBuffers addObject:[NSData dataWithBytes:&data[startLen] length:length - startLen]];
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// We must reconstruct the format description if we get new parameter sets
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formatDesc = NULL;
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}
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// Data is NOT to be freed here. It's a direct usage of the caller's buffer.
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@ -294,95 +414,92 @@ int DrSubmitDecodeUnit(PDECODE_UNIT decodeUnit);
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// No frame data to submit for these NALUs
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return DR_OK;
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}
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else if (formatDesc == NULL) {
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// Create the new format description when we get the first picture data buffer of an IDR frame.
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// This is the only way we know that there is no more CSD for this frame.
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if (videoFormat & VIDEO_FORMAT_MASK_H264) {
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// Construct parameter set arrays for the format description
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size_t parameterSetCount = [parameterSetBuffers count];
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const uint8_t* parameterSetPointers[parameterSetCount];
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size_t parameterSetSizes[parameterSetCount];
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for (int i = 0; i < parameterSetCount; i++) {
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NSData* parameterSet = parameterSetBuffers[i];
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parameterSetPointers[i] = parameterSet.bytes;
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parameterSetSizes[i] = parameterSet.length;
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}
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Log(LOG_I, @"Constructing new H264 format description");
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status = CMVideoFormatDescriptionCreateFromH264ParameterSets(kCFAllocatorDefault,
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parameterSetCount,
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parameterSetPointers,
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parameterSetSizes,
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NAL_LENGTH_PREFIX_SIZE,
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&formatDesc);
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if (status != noErr) {
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Log(LOG_E, @"Failed to create H264 format description: %d", (int)status);
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formatDesc = NULL;
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}
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// Free parameter set buffers after submission
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[parameterSetBuffers removeAllObjects];
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// Create the new format description when we get the first picture data buffer of an IDR frame.
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// This is the only way we know that there is no more CSD for this frame.
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//
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// NB: This logic depends on the fact that we submit all picture data in one buffer!
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// Free the old format description
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if (formatDesc != NULL) {
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CFRelease(formatDesc);
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formatDesc = NULL;
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}
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if (videoFormat & VIDEO_FORMAT_MASK_H264) {
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// Construct parameter set arrays for the format description
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size_t parameterSetCount = [parameterSetBuffers count];
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const uint8_t* parameterSetPointers[parameterSetCount];
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size_t parameterSetSizes[parameterSetCount];
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for (int i = 0; i < parameterSetCount; i++) {
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NSData* parameterSet = parameterSetBuffers[i];
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parameterSetPointers[i] = parameterSet.bytes;
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parameterSetSizes[i] = parameterSet.length;
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}
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else if (videoFormat & VIDEO_FORMAT_MASK_H265) {
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// Construct parameter set arrays for the format description
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size_t parameterSetCount = [parameterSetBuffers count];
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const uint8_t* parameterSetPointers[parameterSetCount];
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size_t parameterSetSizes[parameterSetCount];
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for (int i = 0; i < parameterSetCount; i++) {
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NSData* parameterSet = parameterSetBuffers[i];
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parameterSetPointers[i] = parameterSet.bytes;
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parameterSetSizes[i] = parameterSet.length;
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}
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Log(LOG_I, @"Constructing new HEVC format description");
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NSMutableDictionary* videoFormatParams = [[NSMutableDictionary alloc] init];
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if (contentLightLevelInfo) {
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[videoFormatParams setObject:contentLightLevelInfo forKey:(__bridge NSString*)kCMFormatDescriptionExtension_ContentLightLevelInfo];
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}
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if (masteringDisplayColorVolume) {
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[videoFormatParams setObject:masteringDisplayColorVolume forKey:(__bridge NSString*)kCMFormatDescriptionExtension_MasteringDisplayColorVolume];
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}
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status = CMVideoFormatDescriptionCreateFromHEVCParameterSets(kCFAllocatorDefault,
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parameterSetCount,
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parameterSetPointers,
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parameterSetSizes,
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NAL_LENGTH_PREFIX_SIZE,
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(__bridge CFDictionaryRef)videoFormatParams,
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&formatDesc);
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if (status != noErr) {
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Log(LOG_E, @"Failed to create HEVC format description: %d", (int)status);
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formatDesc = NULL;
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}
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// Free parameter set buffers after submission
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[parameterSetBuffers removeAllObjects];
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Log(LOG_I, @"Constructing new H264 format description");
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status = CMVideoFormatDescriptionCreateFromH264ParameterSets(kCFAllocatorDefault,
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parameterSetCount,
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parameterSetPointers,
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parameterSetSizes,
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NAL_LENGTH_PREFIX_SIZE,
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&formatDesc);
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if (status != noErr) {
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Log(LOG_E, @"Failed to create H264 format description: %d", (int)status);
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formatDesc = NULL;
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}
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#if defined(__IPHONE_16_0) || defined(__TVOS_16_0)
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else if (videoFormat & VIDEO_FORMAT_MASK_AV1) {
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Log(LOG_I, @"Constructing new AV1 format description");
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// AV1 doesn't have a special format description function like H.264 and HEVC have, so we just use the generic one
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NSData* fullFrameData = [NSData dataWithBytesNoCopy:data length:length freeWhenDone:NO];
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NSDictionary* extensions = [self createAV1FormatExtensionsDictionaryForDU:du frameData:fullFrameData];
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status = CMVideoFormatDescriptionCreate(kCFAllocatorDefault, kCMVideoCodecType_AV1,
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videoWidth, videoHeight,
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(__bridge CFDictionaryRef)extensions,
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&formatDesc);
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if (status != noErr) {
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Log(LOG_E, @"Failed to create AV1 format description: %d", (int)status);
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formatDesc = NULL;
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}
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// Free parameter set buffers after submission
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[parameterSetBuffers removeAllObjects];
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}
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else if (videoFormat & VIDEO_FORMAT_MASK_H265) {
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// Construct parameter set arrays for the format description
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size_t parameterSetCount = [parameterSetBuffers count];
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const uint8_t* parameterSetPointers[parameterSetCount];
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size_t parameterSetSizes[parameterSetCount];
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for (int i = 0; i < parameterSetCount; i++) {
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NSData* parameterSet = parameterSetBuffers[i];
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parameterSetPointers[i] = parameterSet.bytes;
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parameterSetSizes[i] = parameterSet.length;
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}
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#endif
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else {
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// Unsupported codec!
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abort();
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Log(LOG_I, @"Constructing new HEVC format description");
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NSMutableDictionary* videoFormatParams = [[NSMutableDictionary alloc] init];
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if (contentLightLevelInfo) {
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[videoFormatParams setObject:contentLightLevelInfo forKey:(__bridge NSString*)kCMFormatDescriptionExtension_ContentLightLevelInfo];
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}
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if (masteringDisplayColorVolume) {
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[videoFormatParams setObject:masteringDisplayColorVolume forKey:(__bridge NSString*)kCMFormatDescriptionExtension_MasteringDisplayColorVolume];
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}
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status = CMVideoFormatDescriptionCreateFromHEVCParameterSets(kCFAllocatorDefault,
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parameterSetCount,
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parameterSetPointers,
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parameterSetSizes,
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NAL_LENGTH_PREFIX_SIZE,
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(__bridge CFDictionaryRef)videoFormatParams,
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&formatDesc);
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|
||||
if (status != noErr) {
|
||||
Log(LOG_E, @"Failed to create HEVC format description: %d", (int)status);
|
||||
formatDesc = NULL;
|
||||
}
|
||||
|
||||
// Free parameter set buffers after submission
|
||||
[parameterSetBuffers removeAllObjects];
|
||||
}
|
||||
else if (videoFormat & VIDEO_FORMAT_MASK_AV1) {
|
||||
NSData* fullFrameData = [NSData dataWithBytesNoCopy:data length:length freeWhenDone:NO];
|
||||
|
||||
Log(LOG_I, @"Constructing new AV1 format description");
|
||||
formatDesc = [self createAV1FormatDescriptionForIDRFrame:fullFrameData];
|
||||
}
|
||||
else {
|
||||
// Unsupported codec!
|
||||
abort();
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user