mp4.cpp

完整的RTP RTSP代码库

/*
 * 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 - 2005.  All Rights Reserved.
 *
 * 3GPP features implementation is based on 3GPP's TS26.234-v5.60,
 * and was contributed by Ximpo Group Ltd.
 *
 * Portions created by Ximpo Group Ltd. are
 * Copyright (C) Ximpo Group Ltd. 2003, 2004.  All Rights Reserved.
 * 
 * Contributor(s): 
 *		Dave Mackie			[e-mail]
 *		Alix Marchandise-Franquet	[e-mail]
 *              Ximpo Group Ltd.                [e-mail]
 *              Bill May                        [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 */
// benski>
 extern "C" MP4FileHandle MP4ReadEx (const char* fileName,
				     void *user, 
				     struct Virtual_IO *virtual_IO, 
				     u_int32_t verbosity)
{
  MP4File* pFile = NULL;
  try {
    pFile = new MP4File(verbosity);
    
    pFile->ReadEx(fileName, user, virtual_IO);
    return (MP4FileHandle)pFile;
  } catch (MP4Error* e) {
    VERBOSE_ERROR(verbosity, e->Print());
    delete e; 
    delete pFile;
    return MP4_INVALID_FILE_HANDLE;
  }
}

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, 
				    u_int32_t  flags)
{
  return MP4CreateEx(fileName, verbosity, flags);
}

extern "C" MP4FileHandle MP4CreateEx (const char* fileName,
				      u_int32_t verbosity, 
				      u_int32_t  flags,
				      int add_ftyp,
				      int add_iods,
				      char* majorBrand, 
				      u_int32_t minorVersion,
				      char** supportedBrands, 
				      u_int32_t supportedBrandsCount)
{
	MP4File* pFile = NULL;
	try {
		pFile = new MP4File(verbosity);
		// LATER useExtensibleFormat, moov first, then mvex's
		pFile->Create(fileName, flags, add_ftyp, add_iods,
			      majorBrand, minorVersion, 
			      supportedBrands, supportedBrandsCount);
		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, u_int32_t flags)
{
	MP4File* pFile = NULL;
	try {
		pFile = new MP4File(verbosity);
		// LATER useExtensibleFormat, moov first, then mvex's
		if (pFile->Modify(fileName))
		return (MP4FileHandle)pFile;
	}
	catch (MP4Error* e) {
		VERBOSE_ERROR(verbosity, e->Print());
		delete e;
	}

	if (pFile) 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" void MP4Close(MP4FileHandle hFile)
{
	if (MP4_IS_VALID_FILE_HANDLE(hFile)) {
		try {
			((MP4File*)hFile)->Close();
			delete (MP4File*)hFile;
			return;
		}
		catch (MP4Error* e) {
			PRINT_ERROR(e);
			delete e;
		}
	}
	return ;
}

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

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,
					    MP4TrackId trackId)
{
	if (MP4_IS_VALID_FILE_HANDLE(hFile)) {
		try {
			return ((MP4File*)hFile)->GetVideoProfileLevel();
		}
		catch (MP4Error* e) {
			PRINT_ERROR(e);
			delete e;
		}
		if (MP4_IS_VALID_TRACK_ID(trackId)) {
		  uint8_t *foo;
		  uint32_t bufsize;
		  uint8_t type;
		  // for mpeg4 video tracks, try to look for the VOSH header,
		  // which has this info.
		  type = MP4GetTrackEsdsObjectTypeId(hFile, trackId);
		  if (type == MP4_MPEG4_VIDEO_TYPE) {
		    if (MP4GetTrackESConfiguration(hFile, 
						   trackId,
						   &foo, 
						   &bufsize)) {
		      uint8_t *ptr = foo;
		      while (bufsize > 0) {
			if (htonl(*(uint32_t *)ptr) == 0x1b0) {
			  uint8_t ret = ptr[4];
			  free(foo);
			  return ret;
			}
			ptr++;
			bufsize--;
		      }
		      free(foo);
		    }
		  }
		}
		  
	}
	return 0;
}

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

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" void MP4SetAudioProfileLevel(MP4FileHandle hFile, u_int8_t value)
{
	if (MP4_IS_VALID_FILE_HANDLE(hFile)) {
		try {
			((MP4File*)hFile)->SetAudioProfileLevel(value);
		}
		catch (MP4Error* e) {
			PRINT_ERROR(e);
			delete e;
		}
	}
}

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" bool MP4HaveAtom (MP4FileHandle hFile, const char *atomName)
{
  if (MP4_IS_VALID_FILE_HANDLE(hFile)) {
    try {
      return ((MP4File *)hFile)->FindAtom(atomName) != NULL;
    } catch (MP4Error *e) {
      PRINT_ERROR(e);
      delete e;
    }
  }
  return false;
}

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

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

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

extern "C" bool 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 true;
		}
		catch (MP4Error* e) {
			PRINT_ERROR(e);
			delete e;
		}
	}
	*ppValue = NULL;
	*pValueSize = 0;
	return false;
}

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 {