mp4.cpp

MPEG-4编解码的实现(包括MPEG4视音频编解码)

				hintTrackId, hintSampleId, pNumPackets);
			return true;
		}
		catch (MP4Error* e) {
			PRINT_ERROR(e);
			delete e;
		}
	}
	return false;
}

extern "C" u_int16_t MP4GetRtpHintNumberOfPackets(
	MP4FileHandle hFile,
	MP4TrackId hintTrackId)
{
	if (MP4_IS_VALID_FILE_HANDLE(hFile)) {
		try {
			return ((MP4File*)hFile)->GetRtpHintNumberOfPackets(hintTrackId);
		}
		catch (MP4Error* e) {
			PRINT_ERROR(e);
			delete e;
		}
	}
	return 0;
}

extern "C" int8_t MP4GetRtpPacketBFrame(
	MP4FileHandle hFile,
	MP4TrackId hintTrackId,
	u_int16_t packetIndex)
{
	if (MP4_IS_VALID_FILE_HANDLE(hFile)) {
		try {
			return ((MP4File*)hFile)->
				GetRtpPacketBFrame(hintTrackId, packetIndex);
		}
		catch (MP4Error* e) {
			PRINT_ERROR(e);
			delete e;
		}
	}
	return -1;
}

extern "C" int32_t MP4GetRtpPacketTransmitOffset(
	MP4FileHandle hFile,
	MP4TrackId hintTrackId,
	u_int16_t packetIndex)
{
	if (MP4_IS_VALID_FILE_HANDLE(hFile)) {
		try {
			return ((MP4File*)hFile)->
				GetRtpPacketTransmitOffset(hintTrackId, packetIndex);
		}
		catch (MP4Error* e) {
			PRINT_ERROR(e);
			delete e;
		}
	}
	return 0;
}

extern "C" bool MP4ReadRtpPacket(
	MP4FileHandle hFile,
	MP4TrackId hintTrackId,
	u_int16_t packetIndex,
	u_int8_t** ppBytes, 
	u_int32_t* pNumBytes,
	u_int32_t ssrc,
	bool includeHeader,
	bool includePayload)
{
	if (MP4_IS_VALID_FILE_HANDLE(hFile)) {
		try {
			((MP4File*)hFile)->ReadRtpPacket(
				hintTrackId, packetIndex, 
				ppBytes, pNumBytes, 
				ssrc, includeHeader, includePayload);
			return true;
		}
		catch (MP4Error* e) {
			PRINT_ERROR(e);
			delete e;
		}
	}
	return false;
}

extern "C" MP4Timestamp MP4GetRtpTimestampStart(
	MP4FileHandle hFile,
	MP4TrackId hintTrackId)
{
	if (MP4_IS_VALID_FILE_HANDLE(hFile)) {
		try {
			return ((MP4File*)hFile)->GetRtpTimestampStart(hintTrackId);
		}
		catch (MP4Error* e) {
			PRINT_ERROR(e);
			delete e;
		}
	}
	return MP4_INVALID_TIMESTAMP;
}

extern "C" bool MP4SetRtpTimestampStart(
	MP4FileHandle hFile,
	MP4TrackId hintTrackId,
	MP4Timestamp rtpStart)
{
	if (MP4_IS_VALID_FILE_HANDLE(hFile)) {
		try {
			((MP4File*)hFile)->SetRtpTimestampStart(
				hintTrackId, rtpStart);
			return true;
		}
		catch (MP4Error* e) {
			PRINT_ERROR(e);
			delete e;
		}
	}
	return false;
}

extern "C" bool MP4AddRtpHint(
	MP4FileHandle hFile,
	MP4TrackId hintTrackId)
{
	return MP4AddRtpVideoHint(hFile, hintTrackId, false, 0);
}

extern "C" bool MP4AddRtpVideoHint(
	MP4FileHandle hFile,
	MP4TrackId hintTrackId,
	bool isBframe, 
	u_int32_t timestampOffset)
{
	if (MP4_IS_VALID_FILE_HANDLE(hFile)) {
		try {
			((MP4File*)hFile)->AddRtpHint(hintTrackId, 
				isBframe, timestampOffset);
			return true;
		}
		catch (MP4Error* e) {
			PRINT_ERROR(e);
			delete e;
		}
	}
	return false;
}

extern "C" bool MP4AddRtpPacket(
	MP4FileHandle hFile,
	MP4TrackId hintTrackId,
	bool setMbit,
	int32_t transmitOffset)
{
	if (MP4_IS_VALID_FILE_HANDLE(hFile)) {
		try {
			((MP4File*)hFile)->AddRtpPacket(
				hintTrackId, setMbit, transmitOffset);
			return true;
		}
		catch (MP4Error* e) {
			PRINT_ERROR(e);
			delete e;
		}
	}
	return false;
}

extern "C" bool MP4AddRtpImmediateData(
	MP4FileHandle hFile,
	MP4TrackId hintTrackId,
	const u_int8_t* pBytes,
	u_int32_t numBytes)
{
	if (MP4_IS_VALID_FILE_HANDLE(hFile)) {
		try {
			((MP4File*)hFile)->AddRtpImmediateData(hintTrackId, 
				pBytes, numBytes);
			return true;
		}
		catch (MP4Error* e) {
			PRINT_ERROR(e);
			delete e;
		}
	}
	return false;
}

extern "C" bool MP4AddRtpSampleData(
	MP4FileHandle hFile,
	MP4TrackId hintTrackId,
	MP4SampleId sampleId,
	u_int32_t dataOffset,
	u_int32_t dataLength)
{
	if (MP4_IS_VALID_FILE_HANDLE(hFile)) {
		try {
			((MP4File*)hFile)->AddRtpSampleData(
				hintTrackId, sampleId, dataOffset, dataLength);
			return true;
		}
		catch (MP4Error* e) {
			PRINT_ERROR(e);
			delete e;
		}
	}
	return false;
}

extern "C" bool MP4AddRtpESConfigurationPacket(
	MP4FileHandle hFile,
	MP4TrackId hintTrackId)
{
	if (MP4_IS_VALID_FILE_HANDLE(hFile)) {
		try {
			((MP4File*)hFile)->AddRtpESConfigurationPacket(hintTrackId);
			return true;
		}
		catch (MP4Error* e) {
			PRINT_ERROR(e);
			delete e;
		}
	}
	return false;
}

extern "C" bool MP4WriteRtpHint(
	MP4FileHandle hFile,
	MP4TrackId hintTrackId,
	MP4Duration duration,
	bool isSyncSample)
{
	if (MP4_IS_VALID_FILE_HANDLE(hFile)) {
		try {
			((MP4File*)hFile)->WriteRtpHint(
				hintTrackId, duration, isSyncSample);
			return true;
		}
		catch (MP4Error* e) {
			PRINT_ERROR(e);
			delete e;
		}
	}
	return false;
}

/* ISMA specific operations */

extern "C" bool MP4MakeIsmaCompliant(
	const char* fileName, 
	u_int32_t verbosity,
	bool addIsmaComplianceSdp)
{
	MP4File* pFile = NULL;

	try {
		pFile = new MP4File(verbosity);
		pFile->Modify(fileName);
		pFile->MakeIsmaCompliant(addIsmaComplianceSdp);
		pFile->Close();
		delete pFile;
		return true;
	}
	catch (MP4Error* e) {
		VERBOSE_ERROR(verbosity, e->Print());
		delete e;
	}
	delete pFile;
	return false;
}

extern "C" char* MP4MakeIsmaSdpIod(
	u_int8_t videoProfile,
	u_int32_t videoBitrate,
	u_int8_t* videoConfig,
	u_int32_t videoConfigLength,
	u_int8_t audioProfile,
	u_int32_t audioBitrate,
	u_int8_t* audioConfig,
	u_int32_t audioConfigLength,
	u_int32_t verbosity)
{
	MP4File* pFile = NULL;

	try {
		pFile = new MP4File(verbosity);

		u_int8_t* pBytes = NULL;
		u_int64_t numBytes = 0;

		pFile->CreateIsmaIodFromParams(
			videoProfile,
			videoBitrate,
			videoConfig,
			videoConfigLength,
			audioProfile,
			audioBitrate,
			audioConfig,
			audioConfigLength,
			&pBytes,
			&numBytes);

		char* iodBase64 = 
			MP4ToBase64(pBytes, numBytes);
		MP4Free(pBytes);

		char* sdpIod = 
			(char*)MP4Malloc(strlen(iodBase64) + 64);
		sprintf(sdpIod,
			"a=mpeg4-iod: \042data:application/mpeg4-iod;base64,%s\042",
			iodBase64);
		MP4Free(iodBase64);

		delete pFile;

		return sdpIod;
	}
	catch (MP4Error* e) {
		VERBOSE_ERROR(verbosity, e->Print());
		delete e;
	}
	delete pFile;
	return NULL;
}

/* Edit list */

extern "C" MP4EditId MP4AddTrackEdit(
	MP4FileHandle hFile,
	MP4TrackId trackId,
	MP4EditId editId,
	MP4Timestamp startTime,
	MP4Duration duration,
	bool dwell)
{
	if (MP4_IS_VALID_FILE_HANDLE(hFile)) {
		try {
			MP4EditId editId =
				((MP4File*)hFile)->AddTrackEdit(trackId, editId);

			if (editId != MP4_INVALID_EDIT_ID) {
				((MP4File*)hFile)->SetTrackEditMediaStart(
					trackId, editId, startTime);
				((MP4File*)hFile)->SetTrackEditDuration(
					trackId, editId, duration);
				((MP4File*)hFile)->SetTrackEditDwell(
					trackId, editId, dwell);
			}

			return editId;
		}
		catch (MP4Error* e) {
			PRINT_ERROR(e);
			delete e;
		}
	}
	return MP4_INVALID_EDIT_ID;
}

extern "C" bool MP4DeleteTrackEdit(
	MP4FileHandle hFile,
	MP4TrackId trackId,
	MP4EditId editId)
{
	if (MP4_IS_VALID_FILE_HANDLE(hFile)) {
		try {
			((MP4File*)hFile)->DeleteTrackEdit(trackId, editId);
			return true;
		}
		catch (MP4Error* e) {
			PRINT_ERROR(e);
			delete e;
		}
	}
	return false;
}

extern "C" u_int32_t MP4GetTrackNumberOfEdits(
	MP4FileHandle hFile,
	MP4TrackId trackId)
{
	if (MP4_IS_VALID_FILE_HANDLE(hFile)) {
		try {
			return ((MP4File*)hFile)->GetTrackNumberOfEdits(trackId);
		}
		catch (MP4Error* e) {
			PRINT_ERROR(e);
			delete e;
		}
	}
	return 0;
}

extern "C" MP4Timestamp MP4GetTrackEditMediaStart(
	MP4FileHandle hFile,
	MP4TrackId trackId,
	MP4EditId editId)
{
	if (MP4_IS_VALID_FILE_HANDLE(hFile)) {
		try {
			return ((MP4File*)hFile)->GetTrackEditMediaStart(
				trackId, editId);
		}
		catch (MP4Error* e) {
			PRINT_ERROR(e);
			delete e;
		}
	}
	return MP4_INVALID_TIMESTAMP;
}

extern "C" MP4Duration MP4GetTrackEditTotalDuration(
	MP4FileHandle hFile,
	MP4TrackId trackId,
	MP4EditId editId)
{
	if (MP4_IS_VALID_FILE_HANDLE(hFile)) {
		try {
			return ((MP4File*)hFile)->GetTrackEditTotalDuration(
				trackId, editId);
		}
		catch (MP4Error* e) {
			PRINT_ERROR(e);
			delete e;
		}
	}
	return MP4_INVALID_DURATION;
}

extern "C" bool MP4SetTrackEditMediaStart(
	MP4FileHandle hFile,
	MP4TrackId trackId,
	MP4EditId editId,
	MP4Timestamp startTime)
{
	if (MP4_IS_VALID_FILE_HANDLE(hFile)) {
		try {
			((MP4File*)hFile)->SetTrackEditMediaStart(
				trackId, editId, startTime);
			return true;
		}
		catch (MP4Error* e) {
			PRINT_ERROR(e);
			delete e;
		}
	}
	return false;
}

extern "C" MP4Duration MP4GetTrackEditDuration(
	MP4FileHandle hFile,
	MP4TrackId trackId,
	MP4EditId editId)
{
	if (MP4_IS_VALID_FILE_HANDLE(hFile)) {
		try {
			return ((MP4File*)hFile)->GetTrackEditDuration(trackId, editId);
		}
		catch (MP4Error* e) {
			PRINT_ERROR(e);
			delete e;
		}
	}
	return MP4_INVALID_DURATION;
}

extern "C" bool MP4SetTrackEditDuration(
	MP4FileHandle hFile,
	MP4TrackId trackId,
	MP4EditId editId,
	MP4Duration duration)
{
	if (MP4_IS_VALID_FILE_HANDLE(hFile)) {
		try {
			((MP4File*)hFile)->SetTrackEditDuration(trackId, editId, duration);
			return true;
		}
		catch (MP4Error* e) {
			PRINT_ERROR(e);
			delete e;
		}
	}
	return false;
}

extern "C" int8_t MP4GetTrackEditDwell(
	MP4FileHandle hFile,
	MP4TrackId trackId,
	MP4EditId editId)
{
	if (MP4_IS_VALID_FILE_HANDLE(hFile)) {
		try {
			return ((MP4File*)hFile)->GetTrackEditDwell(trackId, editId);
		}
		catch (MP4Error* e) {
			PRINT_ERROR(e);
			delete e;
		}
	}
	return -1;
}

extern "C" bool MP4SetTrackEditDwell(
	MP4FileHandle hFile,
	MP4TrackId trackId,
	MP4EditId editId,
	bool dwell)
{
	if (MP4_IS_VALID_FILE_HANDLE(hFile)) {
		try {
			((MP4File*)hFile)->SetTrackEditDwell(trackId, editId, dwell);
			return true;
		}
		catch (MP4Error* e) {
			PRINT_ERROR(e);
			delete e;
		}
	}
	return false;
}

extern "C" bool MP4ReadSampleFromEditTime(
	/* input parameters */
	MP4FileHandle hFile,
	MP4TrackId trackId, 
	MP4Timestamp when,
	/* output parameters */
	u_int8_t** ppBytes, 
	u_int32_t* pNumBytes, 
	MP4Timestamp* pStartTime, 
	MP4Duration* pDuration,
	MP4Duration* pRenderingOffset, 
	bool* pIsSyncSample)
{
	MP4SampleId sampleId = 
		MP4GetSampleIdFromEditTime(
			hFile,
			trackId, 
			when, 
			pStartTime,
			pDuration);

	return MP4ReadSample(
		hFile,
		trackId, 
		sampleId, 
		ppBytes, 
		pNumBytes, 
		NULL,
		NULL, 
		pRenderingOffset, 
		pIsSyncSample);
}

extern "C" MP4SampleId MP4GetSampleIdFromEditTime(
	MP4FileHandle hFile,
	MP4TrackId trackId, 
	MP4Timestamp when,
	MP4Timestamp* pStartTime,
	MP4Duration* pDuration)
{
	if (MP4_IS_VALID_FILE_HANDLE(hFile)) {
		try {
			return ((MP4File*)hFile)->GetSampleIdFromEditTime(
				trackId, when, pStartTime, pDuration);
		}
		catch (MP4Error* e) {
			PRINT_ERROR(e);
			delete e;
		}
	}
	return MP4_INVALID_SAMPLE_ID;
}

/* Utlities */

extern "C" char* MP4BinaryToBase16(
	const u_int8_t* pData, 
	u_int32_t dataSize)
{
	if (pData || dataSize == 0) {
		try {
			return MP4ToBase16(pData, dataSize);
		}
		catch (MP4Error* e) {
			delete e;
		}
	}
	return NULL;
}

extern "C" char* MP4BinaryToBase64(
	const u_int8_t* pData, 
	u_int32_t dataSize)
{
	if (pData || dataSize == 0) {
		try {
			return MP4ToBase64(pData, dataSize);
		}
		catch (MP4Error* e) {
			delete e;
		}
	}
	return NULL;
}