Mercurial > hg > forks > bilotrip-mj12
annotate liboggplayer-src/src/play.cpp @ 14:083c73ceb716
Get rid of the vorbis related code.
| author | Matti Hamalainen <ccr@tnsp.org> |
|---|---|
| date | Mon, 05 Aug 2013 16:54:46 +0300 |
| parents | 105513a2e3c9 |
| children | 3eacedd172ab |
| rev | line source |
|---|---|
| 2 | 1 #include "imp.hpp" |
| 2 | |
| 3 bool OggPlayer::Imp::ready() { | |
| 4 return audio_cache_ready; | |
| 5 } | |
| 6 // return true if need more data | |
| 7 // the return value is strange but the function is | |
| 8 // for internal use only and should only be called | |
| 9 // in play() | |
| 10 bool OggPlayer::Imp::decode_audio() { | |
|
14
083c73ceb716
Get rid of the vorbis related code.
Matti Hamalainen <ccr@tnsp.org>
parents:
2
diff
changeset
|
11 #ifdef VORBIS_SUPPORT |
| 2 | 12 int ret; |
| 13 float **pcm; | |
| 14 // if there's pending, decoded audio, grab it | |
| 15 while ((ret = vorbis_synthesis_pcmout(&v_state, &pcm)) > 0) { | |
| 16 boost::unique_lock<boost::mutex> lock(audio_mut); | |
| 17 // first we need to convert from float to signed short | |
| 18 // then we will use SDL_ConvertAudio | |
| 19 // is our temp buffer big enough? | |
| 20 if (cirbuf.capacity() < ret * v_info.channels * cvt.len_mult | |
| 21 * sizeof(short)) { | |
| 22 cirbuf.set_capacity(ret * v_info.channels * cvt.len_mult * 16 | |
| 23 * sizeof(short)); | |
| 24 } | |
| 25 if (cirbuf.capacity() - cirbuf.size() < ret * v_info.channels | |
| 26 * cvt.len_mult * sizeof(short)) { | |
| 27 audio_cache_ready = true; | |
| 28 return false; | |
| 29 } | |
| 30 if ((audio_buffer_size) < ret * v_info.channels * cvt.len_mult | |
| 31 * sizeof(short)) { | |
| 32 if (audio_buffer) | |
| 33 delete[] audio_buffer; | |
| 34 audio_buffer_size = ret * v_info.channels * cvt.len_mult | |
| 35 * sizeof(short); | |
| 36 audio_buffer = new char[audio_buffer_size]; | |
| 37 } | |
| 38 // convert from float to short | |
| 39 int k = 0; | |
| 40 char* char_ab = (char*) audio_buffer; | |
| 41 short* short_ab = (short*) audio_buffer; | |
| 42 for (int i = 0; i < ret; i++) { | |
| 43 for (int j = 0; j < v_info.channels; j++) { | |
| 44 int val = (int)(pcm[j][i] * 32767.f); | |
| 45 if (val > 32767) | |
| 46 val = 32767; | |
| 47 if (val < -32768) | |
| 48 val = -32768; | |
| 49 short_ab[k++] = val; | |
| 50 | |
| 51 } | |
| 52 } | |
| 53 vorbis_synthesis_read(&v_state, ret); | |
| 54 // now we can use SDL_ConvertAudio | |
| 55 cvt.len = k * sizeof(short); | |
| 56 cvt.buf = (Uint8*) char_ab; | |
| 57 SDL_ConvertAudio(&cvt); | |
| 58 | |
| 59 for (int i = 0; i < cvt.len_cvt; i++) { | |
| 60 cirbuf.push_back(char_ab[i]); | |
| 61 } | |
| 62 | |
| 63 | |
| 64 if(v_state.granulepos!=0){ | |
| 65 AudioGranulePos agp; | |
| 66 agp.pos = audio_bytes_played+cvt.len_cvt; | |
| 67 agp.set_time = (double)v_state.granulepos/(double)v_info.rate; | |
| 68 audio_granule_poses.push_back(agp); | |
| 69 } | |
| 70 | |
| 71 lock.unlock(); | |
| 72 audio_ready_cond.notify_one(); | |
| 73 return false; | |
| 74 | |
| 75 } | |
| 76 // no pending audio; is there a pending packet to decode? | |
| 77 if (ogg_stream_packetout(&o_vsstate, &o_packet) > 0) { | |
| 78 if (vorbis_synthesis(&v_block, &o_packet) == 0) { | |
| 79 vorbis_synthesis_blockin(&v_state, &v_block); | |
| 80 return false; | |
| 81 } | |
| 82 } else { return true; } | |
|
14
083c73ceb716
Get rid of the vorbis related code.
Matti Hamalainen <ccr@tnsp.org>
parents:
2
diff
changeset
|
83 #endif |
|
083c73ceb716
Get rid of the vorbis related code.
Matti Hamalainen <ccr@tnsp.org>
parents:
2
diff
changeset
|
84 return true; |
| 2 | 85 } |
| 86 // similar to decode_audio | |
| 87 bool OggPlayer::Imp::decode_video() { | |
| 88 bool was_ready=videobuf_ready; | |
| 89 boost::unique_lock<boost::mutex> lock(video_mut, boost::defer_lock); | |
| 90 ogg_int64_t videobuf_granulepos = -1; | |
| 91 if (!videobuf_ready){ | |
| 92 if(!lock.try_lock()) | |
| 93 return false; | |
| 94 } | |
| 95 while (!videobuf_ready) { | |
| 96 // theora is one in, one out... | |
| 97 if (ogg_stream_packetout(&o_tsstate, &o_packet) > 0) { | |
| 98 | |
| 99 if(pp_inc){ | |
| 100 pp_level+=pp_inc; | |
| 101 theora_control(&t_state,TH_DECCTL_SET_PPLEVEL,&pp_level,sizeof(pp_level)); | |
| 102 pp_inc=0; | |
| 103 } | |
| 104 if (o_packet.granulepos >= 0) { | |
| 105 theora_control(&t_state, TH_DECCTL_SET_GRANPOS, | |
| 106 &o_packet.granulepos, sizeof(o_packet.granulepos)); | |
| 107 } | |
| 108 if (theora_decode_packetin(&t_state, &o_packet) == 0) { | |
| 109 videobuf_granulepos = t_state.granulepos; | |
| 110 videobuf_time = theora_granule_time(&t_state, videobuf_granulepos); | |
| 111 | |
| 112 if (videobuf_time >= get_time()){ | |
| 113 videobuf_ready = true; | |
| 114 frame++; | |
| 115 } | |
| 116 else { | |
| 117 // If we are too slow, reduce the pp level. | |
| 118 pp_inc=pp_level>0?-1:0; | |
| 119 } | |
| 120 } | |
| 121 | |
| 122 } else | |
| 123 break; | |
| 124 } | |
| 125 lock.unlock(); | |
| 126 if(videobuf_ready!=was_ready) | |
| 127 video_ready_cond.notify_one(); | |
| 128 | |
| 129 return !videobuf_ready; | |
| 130 } | |
| 131 | |
| 132 void OggPlayer::Imp::play_loop() { | |
| 133 if(!file_in.is_open()) return; | |
| 134 audio_cache_ready = false; | |
| 135 audio_bytes_played = 0; | |
| 136 bool audio_need_data = vorbis_p; | |
| 137 bool video_need_data = theora_p; | |
| 138 timer.restart(); | |
| 139 // buffer_data() will close the file on eof | |
| 140 while ((file_in.is_open() || !audio_need_data || !video_need_data) && playing) { | |
| 141 | |
| 142 // sync audio video timer | |
| 143 while(!audio_granule_poses.empty() && | |
| 144 audio_granule_poses.front().pos <= audio_bytes_played){ | |
| 145 time_factor= audio_granule_poses.front().set_time/timer.elapsed(); | |
| 146 audio_granule_poses.pop_front(); | |
| 147 } | |
| 148 | |
| 149 if (theora_p && !videobuf_ready) { | |
| 150 video_need_data = decode_video(); | |
| 151 } | |
| 152 | |
| 153 if (vorbis_p) { | |
| 154 audio_need_data = decode_audio(); | |
| 155 } | |
| 156 | |
| 157 // are we at or past time for this video frame? | |
| 158 if (videobuf_ready && videobuf_time <= get_time()) { | |
| 159 videobuf_ready = false; | |
| 160 } | |
| 161 // if no data yet for somebody, grab another page | |
| 162 if (file_in.is_open() && (audio_need_data || video_need_data)) { | |
| 163 // buffer_data() can handle eof itself | |
| 164 buffer_data(); | |
| 165 while (ogg_sync_pageout(&o_sync, &o_page) > 0) { | |
| 166 queue_page(&o_page); | |
| 167 } | |
| 168 audio_need_data = false; | |
| 169 video_need_data = false; | |
| 170 } | |
| 171 } | |
| 172 playing = false; | |
| 173 | |
| 174 // do not risk a lock | |
| 175 audio_ready_cond.notify_one(); | |
| 176 video_ready_cond.notify_one(); | |
| 177 | |
| 178 // cleanup | |
| 179 close(); | |
| 180 } | |
| 181 | |
| 182 void OggPlayer::Imp::play() { | |
| 183 playing = true; | |
| 184 play_thread = boost::thread(boost::bind(&OggPlayer::Imp::play_loop, this)); | |
| 185 } | |
| 186 |