Update initialization data to CodecPrivate format for VP9 (39bd2319) · Commits · e / os / android_frameworks_av

media/module/extractors/Android.bp

+5 −0

Original line number	Original line	Diff line number	Diff line
	@@ -28,6 +28,10 @@ cc_defaults {
	"liblog",		"liblog",
	],		],

			static_libs: [
			"libstagefright_metadatautils",
			],

	// extractors are expected to run on Q(29)		// extractors are expected to run on Q(29)
	min_sdk_version: "29",		min_sdk_version: "29",
	apex_available: [		apex_available: [
	@@ -56,6 +60,7 @@ cc_defaults {
	"libutils",		"libutils",
	"libmediandk_format",		"libmediandk_format",
	"libmedia_ndkformatpriv",		"libmedia_ndkformatpriv",
			"libstagefright_metadatautils",
	],		],
	},		},
	},		},

media/module/extractors/fuzzers/Android.bp

+1 −0

Original line number	Original line	Diff line number	Diff line
	@@ -131,6 +131,7 @@ cc_fuzz {
	"libstagefright_id3",		"libstagefright_id3",
	"libstagefright_esds",		"libstagefright_esds",
	"libmp4extractor",		"libmp4extractor",
			"libstagefright_metadatautils",
	],		],

	dictionary: "mp4_extractor_fuzzer.dict",		dictionary: "mp4_extractor_fuzzer.dict",

media/module/extractors/mkv/MatroskaExtractor.cpp

+1 −1

Original line number	Original line	Diff line number	Diff line
	@@ -1787,7 +1787,7 @@ status_t MatroskaExtractor::synthesizeVP9(TrackInfo* trackInfo, size_t index) {
	return ERROR_MALFORMED;		return ERROR_MALFORMED;
	}		}

	if (!MakeVP9CodecSpecificData(trackInfo->mMeta, tmpData.get(), frame.len)) {		if (!MakeVP9CodecSpecificDataFromFirstFrame(trackInfo->mMeta, tmpData.get(), frame.len)) {
	return ERROR_MALFORMED;		return ERROR_MALFORMED;
	}		}

media/module/extractors/mp4/MPEG4Extractor.cpp

+26 −1

Original line number	Original line	Diff line number	Diff line
	@@ -51,6 +51,7 @@
	#include <media/stagefright/MediaBufferGroup.h>		#include <media/stagefright/MediaBufferGroup.h>
	#include <media/stagefright/MediaDefs.h>		#include <media/stagefright/MediaDefs.h>
	#include <media/stagefright/MetaDataBase.h>		#include <media/stagefright/MetaDataBase.h>
			#include <media/stagefright/MetaDataUtils.h>
	#include <utils/String8.h>		#include <utils/String8.h>

	#include <byteswap.h>		#include <byteswap.h>
	@@ -2596,8 +2597,32 @@ status_t MPEG4Extractor::parseChunk(off64_t *offset, int depth) {
	*offset += chunk_size;		*offset += chunk_size;
	break;		break;
	}		}

	case FOURCC("vpcC"):		case FOURCC("vpcC"):
			{
			if (mLastTrack == NULL) {
			return ERROR_MALFORMED;
			}

			auto buffer = heapbuffer<uint8_t>(chunk_data_size);

			if (buffer.get() == NULL) {
			ALOGE("b/28471206");
			return NO_MEMORY;
			}

			if (mDataSource->readAt(data_offset, buffer.get(), chunk_data_size) < chunk_data_size) {
			return ERROR_IO;
			}

			if (!MakeVP9CodecPrivateFromVpcC(mLastTrack->meta, buffer.get(), chunk_data_size)) {
			ALOGE("Failed to create VP9 CodecPrivate from vpcC.");
			return ERROR_MALFORMED;
			}

			*offset += chunk_size;
			break;
			}

	case FOURCC("av1C"):		case FOURCC("av1C"):
	{		{
	auto buffer = heapbuffer<uint8_t>(chunk_data_size);		auto buffer = heapbuffer<uint8_t>(chunk_data_size);

media/module/metadatautils/MetaDataUtils.cpp

+64 −20

Original line number	Original line	Diff line number	Diff line
	@@ -134,10 +134,54 @@ static bool getVp9BitdepthChromaSubSampling(ABitReader &bits,
	}		}
	return true;		return true;
	}		}

			/**
			* Build VP9 Codec Feature Metadata (CodecPrivate) to set CSD for VP9 codec.
			* For reference:
			* https://www.webmproject.org/docs/container/#vp9-codec-feature-metadata-codecprivate.
			*
			* @param meta A pointer to AMediaFormat object.
			* @param profile The profile value of the VP9 stream.
			* @param level The VP9 codec level. If the level is unknown, pass -1 to this parameter.
			* @param bitDepth The bit depth of the luma and color components of the VP9 stream.
			* @param chromaSubsampling The chroma subsampling of the VP9 stream. If chromaSubsampling is
			* unknown, pass -1 to this parameter.
			* @return true if CodecPrivate is set as CSD of AMediaFormat object.
			*
			*/
			static bool MakeVP9CodecPrivate(AMediaFormat* meta, int32_t profile, int32_t level,
			int32_t bitDepth, int32_t chromaSubsampling) {
			if (meta == nullptr) {
			return false;
			}

			std::vector<uint8_t> codecPrivate;
			// Construct CodecPrivate in WebM format (ID \| Length \| Data).
			// Helper lambda to add a field to the codec private data
			auto addField = [&codecPrivate](uint8_t id, uint8_t value) {
			codecPrivate.push_back(id);
			codecPrivate.push_back(0x01); // Length is always 1
			codecPrivate.push_back(value);
			};

			// Add fields
			addField(0x01, static_cast<uint8_t>(profile));
			if (level >= 0) {
			addField(0x02, static_cast<uint8_t>(level));
			}
			addField(0x03, static_cast<uint8_t>(bitDepth));
			if (chromaSubsampling >= 0) {
			addField(0x04, static_cast<uint8_t>(chromaSubsampling));
			}
			// Set CSD in the meta format
			AMediaFormat_setBuffer(meta, AMEDIAFORMAT_KEY_CSD_0, codecPrivate.data(), codecPrivate.size());
			return true;
			}

	// The param data contains the first frame data, starting with the uncompressed frame		// The param data contains the first frame data, starting with the uncompressed frame
	// header. This uncompressed header (refer section 6.2 of the VP9 bitstream spec) is		// header. This uncompressed header (refer section 6.2 of the VP9 bitstream spec) is
	// used to parse profile, bitdepth and subsampling.		// used to parse profile, bitdepth and subsampling.
	bool MakeVP9CodecSpecificData(AMediaFormat* meta, const uint8_t* data, size_t size) {		bool MakeVP9CodecSpecificDataFromFirstFrame(AMediaFormat* meta, const uint8_t* data, size_t size) {
	if (meta == nullptr \|\| data == nullptr \|\| size == 0) {		if (meta == nullptr \|\| data == nullptr \|\| size == 0) {
	return false;		return false;
	}		}
	@@ -227,29 +271,29 @@ bool MakeVP9CodecSpecificData(AMediaFormat* meta, const uint8_t* data, size_t si
	if (chromaSubsampling != -1) {		if (chromaSubsampling != -1) {
	csdSize += 3;		csdSize += 3;
	}		}
			// As level is not present in first frame build CodecPrivate without it.
			return MakeVP9CodecPrivate(meta, profile, -1, bitDepth, chromaSubsampling);
			}

	// Create VP9 Codec Feature Metadata (CodecPrivate) that can be parsed		bool MakeVP9CodecPrivateFromVpcC(AMediaFormat* meta, const uint8_t* csdData, size_t size) {
	// https://www.webmproject.org/docs/container/#vp9-codec-feature-metadata-codecprivate		if (meta == nullptr \|\| csdData == nullptr \|\| size < 12) {
	sp<ABuffer> csd = sp<ABuffer>::make(csdSize);		return false;
	uint8_t* csdData = csd->data();		}

	csdData++ = 0x01 / FEATURE PROFILE */;
	csdData++ = 0x01 / length */;
	*csdData++ = profile;

	csdData++ = 0x03 / FEATURE BITDEPTH */;
	csdData++ = 0x01 / length */;
	*csdData++ = bitDepth;

	// csdSize more than 6 means chroma subsampling data was found.		// Check the first 4 bytes (VersionAndFlags) if they match the required value.
	if (csdSize > 6) {		if (csdData[0] != 0x01 \|\| csdData[1] != 0x00 \|\| csdData[2] != 0x00 \|\| csdData[3] != 0x00) {
	csdData++ = 0x04 / FEATURE SUBSAMPLING */;		return false;
	csdData++ = 0x01 / length */;
	*csdData++ = chromaSubsampling;
	}		}

	AMediaFormat_setBuffer(meta, AMEDIAFORMAT_KEY_CSD_0, csd->data(), csd->size());		// Create VP9 Codec Feature Metadata (CodecPrivate) that can be parsed.
	return true;		// https://www.webmproject.org/docs/container/#vp9-codec-feature-metadata-codecprivate
			const uint8_t* vpcCData = csdData + 4; // Skip the first 4 bytes (VersionAndFlags)

			int32_t profile = vpcCData[0];
			int32_t level = vpcCData[1];
			int32_t bitDepth = (vpcCData[2] >> 4) & 0x0F; // Bit Depth (4 bits).
			int32_t chromaSubsampling = (vpcCData[2] >> 1) & 0x07; // Chroma Subsampling (3 bits).
			return MakeVP9CodecPrivate(meta, profile, level, bitDepth, chromaSubsampling);
	}		}

	bool MakeAACCodecSpecificData(MetaDataBase &meta, const uint8_t *data, size_t size) {		bool MakeAACCodecSpecificData(MetaDataBase &meta, const uint8_t *data, size_t size) {