mp4.cpp

MPEG-4编解码的实现(包括MPEG4视音频编解码)

/*
 * The contents of this file are subject to the Mozilla Public
 * License Version 1.1 (the "License"); you may not use this file
 * except in compliance with the License. You may obtain a copy of
 * the License at http://www.mozilla.org/MPL/
 * 
 * Software distributed under the License is distributed on an "AS
 * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
 * implied. See the License for the specific language governing
 * rights and limitations under the License.
 * 
 * The Original Code is MPEG4IP.
 * 
 * The Initial Developer of the Original Code is Cisco Systems Inc.
 * Portions created by Cisco Systems Inc. are
 * Copyright (C) Cisco Systems Inc. 2001.  All Rights Reserved.
 * 
 * Contributor(s): 
 *		Dave Mackie		[e-mail]
 */

/* 
 * MP4 library API functions
 * 
 * These are wrapper functions that provide C linkage conventions
 * to the library, and catch any internal errors, ensuring that
 * a proper return value is given.
 */

#include "mp4common.h"

#define PRINT_ERROR(e) \
	VERBOSE_ERROR(((MP4File*)hFile)->GetVerbosity(), e->Print());

/* file operations */

extern "C" MP4FileHandle MP4Read(const char* fileName, u_int32_t verbosity)
{
	MP4File* pFile = NULL;
	try {
		pFile = new MP4File(verbosity);
		pFile->Read(fileName);
		return (MP4FileHandle)pFile;
	}
	catch (MP4Error* e) {
		VERBOSE_ERROR(verbosity, e->Print());
		delete e;
		delete pFile;
		return MP4_INVALID_FILE_HANDLE;
	}
}

extern "C" MP4FileHandle MP4Create(const char* fileName, 
	u_int32_t verbosity, bool use64bits, bool useExtensibleFormat)
{
	MP4File* pFile = NULL;
	try {
		pFile = new MP4File(verbosity);
		// LATER useExtensibleFormat, moov first, then mvex's
		pFile->Create(fileName, use64bits);
		return (MP4FileHandle)pFile;
	}
	catch (MP4Error* e) {
		VERBOSE_ERROR(verbosity, e->Print());
		delete e;
		delete pFile;
		return MP4_INVALID_FILE_HANDLE;
	}
}

extern "C" MP4FileHandle MP4Modify(const char* fileName, 
	u_int32_t verbosity, bool useExtensibleFormat)
{
	MP4File* pFile = NULL;
	try {
		pFile = new MP4File(verbosity);
		// LATER useExtensibleFormat, moov first, then mvex's
		pFile->Modify(fileName);
		return (MP4FileHandle)pFile;
	}
	catch (MP4Error* e) {
		VERBOSE_ERROR(verbosity, e->Print());
		delete e;
		delete pFile;
		return MP4_INVALID_FILE_HANDLE;
	}
}

extern "C" bool MP4Optimize(const char* existingFileName, 
	const char* newFileName, 
	u_int32_t verbosity)
{
	try {
		MP4File* pFile = new MP4File(verbosity);
		pFile->Optimize(existingFileName, newFileName);
		delete pFile;
		return true;
	}
	catch (MP4Error* e) {
		VERBOSE_ERROR(verbosity, e->Print());
		delete e;
	}
	return false;
}

extern "C" bool MP4Close(MP4FileHandle hFile)
{
	if (MP4_IS_VALID_FILE_HANDLE(hFile)) {
		try {
			((MP4File*)hFile)->Close();
			delete (MP4File*)hFile;
			return true;
		}
		catch (MP4Error* e) {
			PRINT_ERROR(e);
			delete e;
		}
	}
	return false;
}

extern "C" bool MP4Dump(
	MP4FileHandle hFile, 
	FILE* pDumpFile, 
	bool dumpImplicits)
{
	if (MP4_IS_VALID_FILE_HANDLE(hFile)) {
		try {
			((MP4File*)hFile)->Dump(pDumpFile, dumpImplicits);
			return true;
		}
		catch (MP4Error* e) {
			PRINT_ERROR(e);
			delete e;
		}
	}
	return false;
}


/* specific file properties */

extern "C" u_int32_t MP4GetVerbosity(MP4FileHandle hFile)
{
	if (MP4_IS_VALID_FILE_HANDLE(hFile)) {
		try {
			return ((MP4File*)hFile)->GetVerbosity();
		}
		catch (MP4Error* e) {
			PRINT_ERROR(e);
			delete e;
		}
	}
	return 0;
}

extern "C" bool MP4SetVerbosity(MP4FileHandle hFile, u_int32_t verbosity)
{
	if (MP4_IS_VALID_FILE_HANDLE(hFile)) {
		try {
			((MP4File*)hFile)->SetVerbosity(verbosity);
			return true;
		}
		catch (MP4Error* e) {
			PRINT_ERROR(e);
			delete e;
		}
	}
	return false;
}

extern "C" MP4Duration MP4GetDuration(MP4FileHandle hFile)
{
	if (MP4_IS_VALID_FILE_HANDLE(hFile)) {
		try {
			return ((MP4File*)hFile)->GetDuration();
		}
		catch (MP4Error* e) {
			PRINT_ERROR(e);
			delete e;
		}
	}
	return MP4_INVALID_DURATION;
}

extern "C" u_int32_t MP4GetTimeScale(MP4FileHandle hFile)
{
	if (MP4_IS_VALID_FILE_HANDLE(hFile)) {
		try {
			return ((MP4File*)hFile)->GetTimeScale();
		}
		catch (MP4Error* e) {
			PRINT_ERROR(e);
			delete e;
		}
	}
	return 0;
}

extern "C" bool MP4SetTimeScale(MP4FileHandle hFile, u_int32_t value)
{
	if (MP4_IS_VALID_FILE_HANDLE(hFile)) {
		try {
			((MP4File*)hFile)->SetTimeScale(value);
			return true;
		}
		catch (MP4Error* e) {
			PRINT_ERROR(e);
			delete e;
		}
	}
	return false;
}

extern "C" u_int8_t MP4GetODProfileLevel(MP4FileHandle hFile)
{
	if (MP4_IS_VALID_FILE_HANDLE(hFile)) {
		try {
			return ((MP4File*)hFile)->GetODProfileLevel();
		}
		catch (MP4Error* e) {
			PRINT_ERROR(e);
			delete e;
		}
	}
	return 0;
}

extern "C" bool MP4SetODProfileLevel(MP4FileHandle hFile, u_int8_t value)
{
	if (MP4_IS_VALID_FILE_HANDLE(hFile)) {
		try {
			((MP4File*)hFile)->SetODProfileLevel(value);
			return true;
		}
		catch (MP4Error* e) {
			PRINT_ERROR(e);
			delete e;
		}
	}
	return false;
}

extern "C" u_int8_t MP4GetSceneProfileLevel(MP4FileHandle hFile)
{
	if (MP4_IS_VALID_FILE_HANDLE(hFile)) {
		try {
			return ((MP4File*)hFile)->GetSceneProfileLevel();
		}
		catch (MP4Error* e) {
			PRINT_ERROR(e);
			delete e;
		}
	}
	return 0;
}

extern "C" bool MP4SetSceneProfileLevel(MP4FileHandle hFile, u_int8_t value)
{
	if (MP4_IS_VALID_FILE_HANDLE(hFile)) {
		try {
			((MP4File*)hFile)->SetSceneProfileLevel(value);
			return true;
		}
		catch (MP4Error* e) {
			PRINT_ERROR(e);
			delete e;
		}
	}
	return false;
}

extern "C" u_int8_t MP4GetVideoProfileLevel(MP4FileHandle hFile)
{
	if (MP4_IS_VALID_FILE_HANDLE(hFile)) {
		try {
			return ((MP4File*)hFile)->GetVideoProfileLevel();
		}
		catch (MP4Error* e) {
			PRINT_ERROR(e);
			delete e;
		}
	}
	return 0;
}

extern "C" bool MP4SetVideoProfileLevel(MP4FileHandle hFile, u_int8_t value)
{
	if (MP4_IS_VALID_FILE_HANDLE(hFile)) {
		try {
			((MP4File*)hFile)->SetVideoProfileLevel(value);
			return true;
		}
		catch (MP4Error* e) {
			PRINT_ERROR(e);
			delete e;
		}
	}
	return false;
}

extern "C" u_int8_t MP4GetAudioProfileLevel(MP4FileHandle hFile)
{
	if (MP4_IS_VALID_FILE_HANDLE(hFile)) {
		try {
			return ((MP4File*)hFile)->GetAudioProfileLevel();
		}
		catch (MP4Error* e) {
			PRINT_ERROR(e);
			delete e;
		}
	}
	return 0;
}

extern "C" bool MP4SetAudioProfileLevel(MP4FileHandle hFile, u_int8_t value)
{
	if (MP4_IS_VALID_FILE_HANDLE(hFile)) {
		try {
			((MP4File*)hFile)->SetAudioProfileLevel(value);
			return true;
		}
		catch (MP4Error* e) {
			PRINT_ERROR(e);
			delete e;
		}
	}
	return false;
}

extern "C" u_int8_t MP4GetGraphicsProfileLevel(MP4FileHandle hFile)
{
	if (MP4_IS_VALID_FILE_HANDLE(hFile)) {
		try {
			return ((MP4File*)hFile)->GetGraphicsProfileLevel();
		}
		catch (MP4Error* e) {
			PRINT_ERROR(e);
			delete e;
		}
	}
	return 0;
}

extern "C" bool MP4SetGraphicsProfileLevel(MP4FileHandle hFile, u_int8_t value)
{
	if (MP4_IS_VALID_FILE_HANDLE(hFile)) {
		try {
			((MP4File*)hFile)->SetGraphicsProfileLevel(value);
			return true;
		}
		catch (MP4Error* e) {
			PRINT_ERROR(e);
			delete e;
		}
	}
	return false;
}

/* generic file properties */

extern "C" u_int64_t MP4GetIntegerProperty(
	MP4FileHandle hFile, const char* propName)
{
	if (MP4_IS_VALID_FILE_HANDLE(hFile)) {
		try {
			return ((MP4File*)hFile)->GetIntegerProperty(propName);
		}
		catch (MP4Error* e) {
			PRINT_ERROR(e);
			delete e;
		}
	}
	return (u_int64_t)-1;
}

extern "C" float MP4GetFloatProperty(
	MP4FileHandle hFile, const char* propName)
{
	if (MP4_IS_VALID_FILE_HANDLE(hFile)) {
		try {
			return ((MP4File*)hFile)->GetFloatProperty(propName);
		}
		catch (MP4Error* e) {
			PRINT_ERROR(e);
			delete e;
		}
	}
	return NAN;
}

extern "C" const char* MP4GetStringProperty(
	MP4FileHandle hFile, const char* propName)
{
	if (MP4_IS_VALID_FILE_HANDLE(hFile)) {
		try {
			return ((MP4File*)hFile)->GetStringProperty(propName);
		}
		catch (MP4Error* e) {
			PRINT_ERROR(e);
			delete e;
		}
	}
	return NULL;
}

extern "C" void MP4GetBytesProperty(
	MP4FileHandle hFile, const char* propName, 
	u_int8_t** ppValue, u_int32_t* pValueSize)
{
	if (MP4_IS_VALID_FILE_HANDLE(hFile)) {
		try {
			((MP4File*)hFile)->GetBytesProperty(propName, ppValue, pValueSize);
			return;
		}
		catch (MP4Error* e) {
			PRINT_ERROR(e);
			delete e;
		}
	}
	*ppValue = NULL;
	*pValueSize = 0;
	return;
}

extern "C" bool MP4SetIntegerProperty(
	MP4FileHandle hFile, const char* propName, int64_t value)
{
	if (MP4_IS_VALID_FILE_HANDLE(hFile)) {
		try {
			((MP4File*)hFile)->SetIntegerProperty(propName, value);
			return true;
		}
		catch (MP4Error* e) {
			PRINT_ERROR(e);
			delete e;
		}
	}
	return false;
}

extern "C" bool MP4SetFloatProperty(
	MP4FileHandle hFile, const char* propName, float value)
{
	if (MP4_IS_VALID_FILE_HANDLE(hFile)) {
		try {
			((MP4File*)hFile)->SetFloatProperty(propName, value);
			return true;
		}
		catch (MP4Error* e) {
			PRINT_ERROR(e);
			delete e;
		}
	}
	return false;
}

extern "C" bool MP4SetStringProperty(
	MP4FileHandle hFile, const char* propName, const char* value)
{
	if (MP4_IS_VALID_FILE_HANDLE(hFile)) {
		try {
			((MP4File*)hFile)->SetStringProperty(propName, value);
			return true;
		}
		catch (MP4Error* e) {
			PRINT_ERROR(e);
			delete e;
		}
	}
	return false;
}

extern "C" bool MP4SetBytesProperty(
	MP4FileHandle hFile, const char* propName, 
	const u_int8_t* pValue, u_int32_t valueSize)
{
	if (MP4_IS_VALID_FILE_HANDLE(hFile)) {
		try {
			((MP4File*)hFile)->SetBytesProperty(propName, pValue, valueSize);
			return true;
		}
		catch (MP4Error* e) {
			PRINT_ERROR(e);
			delete e;
		}
	}
	return false;
}

/* track operations */

extern "C" MP4TrackId MP4AddTrack(
	MP4FileHandle hFile, const char* type)
{
	if (MP4_IS_VALID_FILE_HANDLE(hFile)) {
		try {
			return ((MP4File*)hFile)->AddSystemsTrack(type);
		}
		catch (MP4Error* e) {
			PRINT_ERROR(e);
			delete e;
		}
	}
	return MP4_INVALID_TRACK_ID;
}

extern "C" MP4TrackId MP4AddSystemsTrack(
	MP4FileHandle hFile, const char* type)
{
	if (MP4_IS_VALID_FILE_HANDLE(hFile)) {
		try {
			return ((MP4File*)hFile)->AddSystemsTrack(type);
		}
		catch (MP4Error* e) {
			PRINT_ERROR(e);
			delete e;
		}
	}
	return MP4_INVALID_TRACK_ID;
}

extern "C" MP4TrackId MP4AddODTrack(MP4FileHandle hFile)
{
	if (MP4_IS_VALID_FILE_HANDLE(hFile)) {
		try {
			return ((MP4File*)hFile)->AddODTrack();
		}
		catch (MP4Error* e) {
			PRINT_ERROR(e);
			delete e;
		}
	}
	return MP4_INVALID_TRACK_ID;
}

extern "C" MP4TrackId MP4AddSceneTrack(MP4FileHandle hFile)
{
	if (MP4_IS_VALID_FILE_HANDLE(hFile)) {
		try {
			return ((MP4File*)hFile)->AddSceneTrack();
		}
		catch (MP4Error* e) {
			PRINT_ERROR(e);
			delete e;
		}
	}
	return MP4_INVALID_TRACK_ID;
}

extern "C" MP4TrackId MP4AddAudioTrack(
	MP4FileHandle hFile, 
	u_int32_t timeScale, 
	MP4Duration sampleDuration, 
	u_int8_t audioType)
{
	if (MP4_IS_VALID_FILE_HANDLE(hFile)) {
		try {
			return ((MP4File*)hFile)->
				AddAudioTrack(timeScale, sampleDuration, audioType);
		}
		catch (MP4Error* e) {
			PRINT_ERROR(e);
			delete e;
		}
	}
	return MP4_INVALID_TRACK_ID;
}

extern "C" MP4TrackId MP4AddVideoTrack(
	MP4FileHandle hFile, 
	u_int32_t timeScale, 
	MP4Duration sampleDuration,
	u_int16_t width, 
	u_int16_t height, 
	u_int8_t videoType)
{
	if (MP4_IS_VALID_FILE_HANDLE(hFile)) {
		try {
			return ((MP4File*)hFile)->AddVideoTrack(
				timeScale, sampleDuration, width, height, videoType);
		}
		catch (MP4Error* e) {
			PRINT_ERROR(e);
			delete e;
		}
	}
	return MP4_INVALID_TRACK_ID;
}

extern "C" MP4TrackId MP4AddHintTrack(
	MP4FileHandle hFile, MP4TrackId refTrackId)
{
	if (MP4_IS_VALID_FILE_HANDLE(hFile)) {
		try {
			return ((MP4File*)hFile)->AddHintTrack(refTrackId);
		}
		catch (MP4Error* e) {
			PRINT_ERROR(e);
			delete e;
		}
	}
	return MP4_INVALID_TRACK_ID;
}

extern "C" MP4TrackId MP4CloneTrack(
	MP4FileHandle srcFile, 
	MP4TrackId srcTrackId,
	MP4FileHandle dstFile)
{
	MP4TrackId dstTrackId = MP4_INVALID_TRACK_ID;