mp4.h

MPEG-4编解码的实现(包括MPEG4视音频编解码)

u_int16_t MP4GetTrackVideoHeight(
	MP4FileHandle hFile, 
	MP4TrackId trackId);

float MP4GetTrackVideoFrameRate(
	MP4FileHandle hFile, 
	MP4TrackId trackId);

/* generic track properties */

u_int64_t MP4GetTrackIntegerProperty(
	MP4FileHandle hFile, 
	MP4TrackId trackId, 
	const char* propName);

float MP4GetTrackFloatProperty(
	MP4FileHandle hFile, 
	MP4TrackId trackId, 
	const char* propName);

const char* MP4GetTrackStringProperty(
	MP4FileHandle hFile, 
	MP4TrackId trackId, 
	const char* propName);

void MP4GetTrackBytesProperty(
	MP4FileHandle hFile, 
	MP4TrackId trackId, 
	const char* propName,
	u_int8_t** ppValue, 
	u_int32_t* pValueSize);

bool MP4SetTrackIntegerProperty(
	MP4FileHandle hFile, 
	MP4TrackId trackId, 
	const char* propName, 
	int64_t value);

bool MP4SetTrackFloatProperty(
	MP4FileHandle hFile, 
	MP4TrackId trackId, 
	const char* propName, 
	float value);

bool MP4SetTrackStringProperty(
	MP4FileHandle hFile, 
	MP4TrackId trackId, 
	const char* propName, 
	const char* value);

bool MP4SetTrackBytesProperty(
	MP4FileHandle hFile, 
	MP4TrackId trackId, 
	const char* propName, 
	const u_int8_t* pValue, 
	u_int32_t valueSize);

/* sample operations */

bool MP4ReadSample(
	/* input parameters */
	MP4FileHandle hFile,
	MP4TrackId trackId, 
	MP4SampleId sampleId,
	/* input/output parameters */
	u_int8_t** ppBytes, 
	u_int32_t* pNumBytes, 
	/* output parameters */
	MP4Timestamp* pStartTime DEFAULT(NULL), 
	MP4Duration* pDuration DEFAULT(NULL),
	MP4Duration* pRenderingOffset DEFAULT(NULL), 
	bool* pIsSyncSample DEFAULT(NULL));

/* uses (unedited) time to specify sample instead of sample id */
bool MP4ReadSampleFromTime(
	/* input parameters */
	MP4FileHandle hFile,
	MP4TrackId trackId, 
	MP4Timestamp when,
	/* input/output parameters */
	u_int8_t** ppBytes, 
	u_int32_t* pNumBytes, 
	/* output parameters */
	MP4Timestamp* pStartTime DEFAULT(NULL), 
	MP4Duration* pDuration DEFAULT(NULL),
	MP4Duration* pRenderingOffset DEFAULT(NULL), 
	bool* pIsSyncSample DEFAULT(NULL));

bool MP4WriteSample(
	MP4FileHandle hFile,
	MP4TrackId trackId,
	u_int8_t* pBytes, 
	u_int32_t numBytes,
	MP4Duration duration DEFAULT(MP4_INVALID_DURATION),
	MP4Duration renderingOffset DEFAULT(0), 
	bool isSyncSample DEFAULT(true));

bool MP4CopySample(
	MP4FileHandle srcFile,
	MP4TrackId srcTrackId, 
	MP4SampleId srcSampleId,
	MP4FileHandle dstFile DEFAULT(MP4_INVALID_FILE_HANDLE),
	MP4TrackId dstTrackId DEFAULT(MP4_INVALID_TRACK_ID),
	MP4Duration dstSampleDuration DEFAULT(MP4_INVALID_DURATION));

/* Note this function is not yet implemented */
bool MP4ReferenceSample(
	MP4FileHandle srcFile,
	MP4TrackId srcTrackId, 
	MP4SampleId srcSampleId,
	MP4FileHandle dstFile,
	MP4TrackId dstTrackId,
	MP4Duration dstSampleDuration DEFAULT(MP4_INVALID_DURATION));

u_int32_t MP4GetSampleSize(
	MP4FileHandle hFile,
	MP4TrackId trackId, 
	MP4SampleId sampleId);

u_int32_t MP4GetTrackMaxSampleSize(
	MP4FileHandle hFile,
	MP4TrackId trackId); 

MP4SampleId MP4GetSampleIdFromTime(
	MP4FileHandle hFile,
	MP4TrackId trackId, 
	MP4Timestamp when, 
	bool wantSyncSample DEFAULT(false));

MP4Timestamp MP4GetSampleTime(
	MP4FileHandle hFile,
	MP4TrackId trackId, 
	MP4SampleId sampleId);

MP4Duration MP4GetSampleDuration(
	MP4FileHandle hFile,
	MP4TrackId trackId, 
	MP4SampleId sampleId);

MP4Duration MP4GetSampleRenderingOffset(
	MP4FileHandle hFile,
	MP4TrackId trackId, 
	MP4SampleId sampleId);

bool MP4SetSampleRenderingOffset(
	MP4FileHandle hFile,
	MP4TrackId trackId, 
	MP4SampleId sampleId,
	MP4Duration renderingOffset);

int8_t MP4GetSampleSync(
	MP4FileHandle hFile,
	MP4TrackId trackId, 
	MP4SampleId sampleId);

/* rtp hint track operations */

bool MP4GetHintTrackRtpPayload(
	MP4FileHandle hFile,
	MP4TrackId hintTrackId,
	char** ppPayloadName DEFAULT(NULL),
	u_int8_t* pPayloadNumber DEFAULT(NULL),
	u_int16_t* pMaxPayloadSize DEFAULT(NULL));

bool MP4SetHintTrackRtpPayload(
	MP4FileHandle hFile,
	MP4TrackId hintTrackId,
	const char* pPayloadName,
	u_int8_t* pPayloadNumber,
	u_int16_t maxPayloadSize DEFAULT(0));

const char* MP4GetSessionSdp(
	MP4FileHandle hFile);

bool MP4SetSessionSdp(
	MP4FileHandle hFile,
	const char* sdpString);

bool MP4AppendSessionSdp(
	MP4FileHandle hFile,
	const char* sdpString);

const char* MP4GetHintTrackSdp(
	MP4FileHandle hFile,
	MP4TrackId hintTrackId);

bool MP4SetHintTrackSdp(
	MP4FileHandle hFile,
	MP4TrackId hintTrackId,
	const char* sdpString);

bool MP4AppendHintTrackSdp(
	MP4FileHandle hFile,
	MP4TrackId hintTrackId,
	const char* sdpString);

MP4TrackId MP4GetHintTrackReferenceTrackId(
	MP4FileHandle hFile,
	MP4TrackId hintTrackId);

bool MP4ReadRtpHint(
	MP4FileHandle hFile,
	MP4TrackId hintTrackId,
	MP4SampleId hintSampleId,
	u_int16_t* pNumPackets DEFAULT(NULL));

u_int16_t MP4GetRtpHintNumberOfPackets(
	MP4FileHandle hFile,
	MP4TrackId hintTrackId);

int8_t MP4GetRtpPacketBFrame(
	MP4FileHandle hFile,
	MP4TrackId hintTrackId,
	u_int16_t packetIndex);

int32_t MP4GetRtpPacketTransmitOffset(
	MP4FileHandle hFile,
	MP4TrackId hintTrackId,
	u_int16_t packetIndex);

bool MP4ReadRtpPacket(
	MP4FileHandle hFile,
	MP4TrackId hintTrackId,
	u_int16_t packetIndex,
	u_int8_t** ppBytes, 
	u_int32_t* pNumBytes,
	u_int32_t ssrc DEFAULT(0),
	bool includeHeader DEFAULT(true),
	bool includePayload DEFAULT(true));

MP4Timestamp MP4GetRtpTimestampStart(
	MP4FileHandle hFile,
	MP4TrackId hintTrackId);

bool MP4SetRtpTimestampStart(
	MP4FileHandle hFile,
	MP4TrackId hintTrackId,
	MP4Timestamp rtpStart);

bool MP4AddRtpHint(
	MP4FileHandle hFile,
	MP4TrackId hintTrackId);

bool MP4AddRtpVideoHint(
	MP4FileHandle hFile,
	MP4TrackId hintTrackId,
	bool isBframe DEFAULT(false), 
	u_int32_t timestampOffset DEFAULT(0));

bool MP4AddRtpPacket(
	MP4FileHandle hFile,
	MP4TrackId hintTrackId,
	bool setMbit DEFAULT(false),
	int32_t transmitOffset DEFAULT(0));

bool MP4AddRtpImmediateData(
	MP4FileHandle hFile,
	MP4TrackId hintTrackId,
	const u_int8_t* pBytes,
	u_int32_t numBytes);

bool MP4AddRtpSampleData(
	MP4FileHandle hFile,
	MP4TrackId hintTrackId,
	MP4SampleId sampleId,
	u_int32_t dataOffset,
	u_int32_t dataLength);

bool MP4AddRtpESConfigurationPacket(
	MP4FileHandle hFile,
	MP4TrackId hintTrackId);

bool MP4WriteRtpHint(
	MP4FileHandle hFile,
	MP4TrackId hintTrackId,
	MP4Duration duration,
	bool isSyncSample DEFAULT(true));

/* ISMA specific utilities */

bool MP4MakeIsmaCompliant(const char* fileName, 
	u_int32_t verbosity DEFAULT(0),
	bool addIsmaComplianceSdp DEFAULT(true));

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 DEFAULT(0));

/* edit list */

/* NOTE this section of functionality 
 * has not yet been fully tested 
 */

MP4EditId MP4AddTrackEdit(
	MP4FileHandle hFile,
	MP4TrackId trackId,
	MP4EditId editId DEFAULT(MP4_INVALID_EDIT_ID),
	MP4Timestamp startTime DEFAULT(0),
	MP4Duration duration DEFAULT(0),
	bool dwell DEFAULT(false));

bool MP4DeleteTrackEdit(
	MP4FileHandle hFile,
	MP4TrackId trackId,
	MP4EditId editId);

u_int32_t MP4GetTrackNumberOfEdits(
	MP4FileHandle hFile,
	MP4TrackId trackId);

MP4Timestamp MP4GetTrackEditStart(
	MP4FileHandle hFile,
	MP4TrackId trackId,
	MP4EditId editId);

MP4Duration MP4GetTrackEditTotalDuration(
	MP4FileHandle hFile,
	MP4TrackId trackId,
	MP4EditId editId DEFAULT(MP4_INVALID_EDIT_ID));

MP4Timestamp MP4GetTrackEditMediaStart(
	MP4FileHandle hFile,
	MP4TrackId trackId,
	MP4EditId editId);

bool MP4SetTrackEditMediaStart(
	MP4FileHandle hFile,
	MP4TrackId trackId,
	MP4EditId editId,
	MP4Timestamp startTime);

MP4Duration MP4GetTrackEditDuration(
	MP4FileHandle hFile,
	MP4TrackId trackId,
	MP4EditId editId);

bool MP4SetTrackEditDuration(
	MP4FileHandle hFile,
	MP4TrackId trackId,
	MP4EditId editId,
	MP4Duration duration);

int8_t MP4GetTrackEditDwell(
	MP4FileHandle hFile,
	MP4TrackId trackId,
	MP4EditId editId);

bool MP4SetTrackEditDwell(
	MP4FileHandle hFile,
	MP4TrackId trackId,
	MP4EditId editId,
	bool dwell);

bool MP4ReadSampleFromEditTime(
	/* input parameters */
	MP4FileHandle hFile,
	MP4TrackId trackId, 
	MP4Timestamp when, 
	/* input/output parameters */
	u_int8_t** ppBytes, 
	u_int32_t* pNumBytes, 
	/* output parameters */
	MP4Timestamp* pStartTime DEFAULT(NULL), 
	MP4Duration* pDuration DEFAULT(NULL),
	MP4Duration* pRenderingOffset DEFAULT(NULL), 
	bool* pIsSyncSample DEFAULT(NULL));

MP4SampleId MP4GetSampleIdFromEditTime(
	MP4FileHandle hFile,
	MP4TrackId trackId, 
	MP4Timestamp when, 
	MP4Timestamp* pStartTime DEFAULT(NULL), 
	MP4Duration* pDuration DEFAULT(NULL));

/* time conversion utilties */

/* predefined values for timeScale parameter below */
#define MP4_SECONDS_TIME_SCALE		1
#define MP4_MILLISECONDS_TIME_SCALE 1000
#define MP4_MICROSECONDS_TIME_SCALE 1000000
#define MP4_NANOSECONDS_TIME_SCALE 	1000000000

#define MP4_SECS_TIME_SCALE 	MP4_SECONDS_TIME_SCALE
#define MP4_MSECS_TIME_SCALE	MP4_MILLISECONDS_TIME_SCALE
#define MP4_USECS_TIME_SCALE	MP4_MICROSECONDS_TIME_SCALE
#define MP4_NSECS_TIME_SCALE	MP4_NANOSECONDS_TIME_SCALE

u_int64_t MP4ConvertFromMovieDuration(
	MP4FileHandle hFile,
	MP4Duration duration,
	u_int32_t timeScale);

u_int64_t MP4ConvertFromTrackTimestamp(
	MP4FileHandle hFile,
	MP4TrackId trackId, 
	MP4Timestamp timeStamp,
	u_int32_t timeScale);

MP4Timestamp MP4ConvertToTrackTimestamp(
	MP4FileHandle hFile,
	MP4TrackId trackId, 
	u_int64_t timeStamp,
	u_int32_t timeScale);

u_int64_t MP4ConvertFromTrackDuration(
	MP4FileHandle hFile,
	MP4TrackId trackId, 
	MP4Duration duration,
	u_int32_t timeScale);

MP4Duration MP4ConvertToTrackDuration(
	MP4FileHandle hFile,
	MP4TrackId trackId, 
	u_int64_t duration,
	u_int32_t timeScale);

char* MP4BinaryToBase16(
	const u_int8_t* pData, 
	u_int32_t dataSize);

char* MP4BinaryToBase64(
	const u_int8_t* pData, 
	u_int32_t dataSize);

#ifdef __cplusplus
}
#endif

/* undefined our utlity macro to avoid conflicts */
#undef DEFAULT

#endif /* __MP4_INCLUDED__ */