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f331303404
* depends on libmp4v2 <http://code.google.com/p/mp4v2/> (originally compiled against v1.6.1) * File format details: - Files must be hinted (mpeg4ip can be used to create the hint tracks). - Video track encoding must be supported by FS (e.g. H.263) - Audio track encoding must be PCMU/8000/Mono. The audio track can be created with this tool: <https://asteriskvideo.svn.sourceforge.net/svnroot/asteriskvideo/tools/pcm2mp4.cpp>
138 lines
3.0 KiB
C++
138 lines
3.0 KiB
C++
/*
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The contents of this file are subject to the Mozilla Public License
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Version 1.1 (the "License"); you may not use this file except in
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compliance with the License. You may obtain a copy of the License at
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http://www.mozilla.org/MPL/
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Software distributed under the License is distributed on an "AS IS"
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basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
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License for the specific language governing rights and limitations
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under the License.
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The Original Code is MP4 Helper Library to Freeswitch MP4 module.
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The Initial Developer of the Original Code is
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Paulo Rogério Panhoto <paulo@voicetechnology.com.br>.
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Portions created by the Initial Developer are Copyright (C)
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the Initial Developer. All Rights Reserved.
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*/
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#ifndef MP4_HELPER_HPP_
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#define MP4_HELPER_HPP_
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#include <mp4.h>
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#include <string>
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#include <exception>
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#include <string>
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namespace MP4
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{
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class Exception: public std::exception {
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public:
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Exception(const std::string & file, const std::string & error)
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: description_(file + ':' + error)
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{
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}
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const char * what() const throw()
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{
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return description_.c_str();
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}
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~Exception() throw()
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{
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}
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private:
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std::string description_;
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};
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struct RuntimeProperties {
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u_int32_t frame; // sampleID
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u_int16_t packetsPerFrame;
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u_int16_t packet; // packetID
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u_int32_t last_frame; // timestamp
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RuntimeProperties(): frame(0), packetsPerFrame(0), packet(0)
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{
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}
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};
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struct TrackProperties {
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MP4TrackId hint;
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MP4TrackId track;
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char * codecName;
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u_int8_t payload;
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u_int32_t clock;
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u_int32_t packetLength; // packet Length in time (ms)
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RuntimeProperties runtime;
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TrackProperties(): hint(MP4_INVALID_TRACK_ID), track(MP4_INVALID_TRACK_ID),
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codecName(NULL), payload(0), clock(0), packetLength(0)
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{
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}
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};
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typedef TrackProperties AudioProperties;
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struct VideoProperties {
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TrackProperties track;
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std::string fmtp;
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VideoProperties()
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{
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}
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VideoProperties(const TrackProperties & rhs): track(rhs)
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{
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}
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};
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class Context {
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public:
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Context(const char * file, bool create = false);
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~Context();
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void open(const char * file);
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void create(const char * file);
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void close();
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// returns: TRUE = has more data, FALSE = end-of-stream or failure
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bool getVideoPacket(void * buffer, u_int & size, u_int & ts);
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// returns: TRUE = has more data, FALSE = end-of-stream or failure
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bool getAudioPacket(void * buffer, u_int & size, u_int & ts);
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bool isOpen() const { return fh != MP4_INVALID_FILE_HANDLE; }
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bool isSupported() const { return audio.track != MP4_INVALID_TRACK_ID && video.track.track != MP4_INVALID_TRACK_ID; }
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const AudioProperties & audioTrack() const { return audio; }
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const VideoProperties & videoTrack() const { return video; }
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private:
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MP4FileHandle fh;
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AudioProperties audio;
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VideoProperties video;
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// Prevent copy construction.
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Context(const Context &);
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bool getPacket(MP4TrackId hint, RuntimeProperties & rt,
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bool header, void * buffer, u_int & size, u_int & ts);
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void getTracks(const char * file);
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};
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}
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#endif
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