Panda3D
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00001 // Filename: ffmpegAudioCursor.h 00002 // Created by: jyelon (01Aug2007) 00003 // 00004 //////////////////////////////////////////////////////////////////// 00005 // 00006 // PANDA 3D SOFTWARE 00007 // Copyright (c) Carnegie Mellon University. All rights reserved. 00008 // 00009 // All use of this software is subject to the terms of the revised BSD 00010 // license. You should have received a copy of this license along 00011 // with this source code in a file named "LICENSE." 00012 // 00013 //////////////////////////////////////////////////////////////////// 00014 00015 #ifndef FFMPEGAUDIOCURSOR_H 00016 #define FFMPEGAUDIOCURSOR_H 00017 00018 #include "pandabase.h" 00019 00020 #ifdef HAVE_FFMPEG 00021 00022 #include "movieAudioCursor.h" 00023 #include "namable.h" 00024 #include "texture.h" 00025 #include "pointerTo.h" 00026 #include "ffmpegVirtualFile.h" 00027 00028 class FfmpegAudio; 00029 struct AVFormatContext; 00030 struct AVCodecContext; 00031 struct AVStream; 00032 struct AVPacket; 00033 00034 //////////////////////////////////////////////////////////////////// 00035 // Class : FfmpegAudioCursor 00036 // Description : A stream that generates a sequence of audio samples. 00037 //////////////////////////////////////////////////////////////////// 00038 class EXPCL_PANDA_MOVIES FfmpegAudioCursor : public MovieAudioCursor { 00039 friend class FfmpegAudio; 00040 00041 PUBLISHED: 00042 FfmpegAudioCursor(FfmpegAudio *src); 00043 virtual ~FfmpegAudioCursor(); 00044 virtual void seek(double offset); 00045 00046 public: 00047 virtual void read_samples(int n, PN_int16 *data); 00048 00049 protected: 00050 void fetch_packet(); 00051 bool reload_buffer(); 00052 void cleanup(); 00053 Filename _filename; 00054 int _initial_dts; 00055 AVPacket *_packet; 00056 int _packet_size; 00057 unsigned char *_packet_data; 00058 AVFormatContext *_format_ctx; 00059 AVCodecContext *_audio_ctx; 00060 FfmpegVirtualFile _ffvfile; 00061 int _audio_index; 00062 double _audio_timebase; 00063 00064 PN_int16 *_buffer; 00065 int _buffer_size; 00066 PN_int16 *_buffer_alloc; 00067 int _buffer_head; 00068 int _buffer_tail; 00069 00070 public: 00071 static TypeHandle get_class_type() { 00072 return _type_handle; 00073 } 00074 static void init_type() { 00075 TypedWritableReferenceCount::init_type(); 00076 register_type(_type_handle, "FfmpegAudioCursor", 00077 MovieAudioCursor::get_class_type()); 00078 } 00079 virtual TypeHandle get_type() const { 00080 return get_class_type(); 00081 } 00082 virtual TypeHandle force_init_type() {init_type(); return get_class_type();} 00083 00084 private: 00085 static TypeHandle _type_handle; 00086 }; 00087 00088 #include "ffmpegAudioCursor.I" 00089 00090 #endif // HAVE_FFMPEG 00091 #endif // FFMPEG_AUDIO.H