4 * Copyright (C) 2008 Adam Williams <broadcast at earthling dot net>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
28 #include <sys/ioctl.h>
32 #include "audioalsa.inc"
33 #include "audioconfig.inc"
34 #include "audiodvb.inc"
35 #include "audiodevice.inc"
36 #include "audioesound.inc"
37 #include "audiooss.inc"
38 #include "audiov4l2mpeg.inc"
39 #include "bctimer.inc"
41 #include "condition.inc"
42 #include "dcoffset.inc"
43 #include "device1394output.inc"
44 #include "devicedvbinput.inc"
45 #include "devicempeginput.inc"
46 #include "maxchannels.h"
48 #include "mwindow.inc"
49 #include "preferences.inc"
50 #include "recordgui.inc"
51 #include "samples.inc"
54 #include "videodevice.inc"
56 #include "audio1394.inc"
57 #include "device1394output.inc"
58 #include "vdevice1394.inc"
61 class AudioThread : public Thread
64 void (AudioDevice::*arun)();
65 void (AudioDevice::*aend)();
66 Condition *startup_lock;
69 AudioThread(AudioDevice *device,
70 void (AudioDevice::*arun)(),
71 void (AudioDevice::*aend)());
81 friend class RecordAudio;
83 // MWindow is required where global input is used, to get the pointer.
84 AudioDevice(MWindow *mwindow = 0);
87 friend class AudioALSA;
88 friend class AudioMPEG;
89 friend class AudioDVB;
90 friend class AudioV4L2MPEG;
91 friend class AudioOSS;
92 friend class AudioESound;
93 friend class Audio1394;
94 friend class VDevice1394;
95 friend class Device1394Output;
96 friend class DeviceMPEGInput;
97 friend class DeviceDVBInput;
98 friend class DeviceV4L2Input;
100 int open_input(AudioInConfig *config,
101 VideoInConfig *vconfig,
106 int open_output(AudioOutConfig *config,
111 int open_monitor(AudioOutConfig *config, int mode);
114 // ================================ recording
116 // read from the record device
117 // Conversion between double and int is done in AudioDevice
118 int read_buffer(Samples **input, int channels,
119 int samples, int *over, double *max, int input_offset = 0);
120 void start_recording();
121 // If a firewire device crashed
122 int interrupt_crash();
124 // ================================== dc offset
126 // writes to whichever buffer is free or blocks until one becomes free
127 int write_buffer(double **output, int channels, int samples, double bfr_time=-1.);
129 int stop_audio(int wait);
131 // After the last buffer is written call this to terminate.
132 // A separate buffer for termination is required since the audio device can be
133 // finished without writing a single byte
134 int set_last_buffer();
136 // start the thread processing buffers
137 int start_playback();
138 int is_monitoring() { return monitoring && monitor_open; }
139 void set_monitoring(int mode);
140 // record menu auto config update
141 void auto_update(int channels, int samplerate, int bits);
142 int config_updated();
143 void config_update();
144 // record raw stream on file descr fd, to close use fd=-1
145 // bsz records up to bsz bytes of past buffer data in first_write
146 int start_toc(const char *path, const char *toc_path);
147 int start_record(int fd, int bsz=0);
149 int total_audio_channels();
150 DeviceMPEGInput *mpeg_device();
152 // interrupt the playback thread
153 int interrupt_playback();
154 // drop the current record buffer and wait for resume
155 void interrupt_recording();
156 void resume_recording();
157 void set_play_dither(int status);
158 void set_rec_gain(double gain=1.);
159 void set_play_gain(double gain=1.);
160 // set software positioning on or off
161 void set_software_positioning(int status = 1);
162 // total samples played
163 // + audio offset from configuration if playback
164 int64_t current_position();
165 int64_t samples_output();
166 double get_itimestamp();
167 double get_otimestamp();
168 double device_timestamp();
169 void set_vdevice(VideoDevice *vdevice) { this->vdevice = vdevice; }
170 int get_interrupted() { return playback_interrupted; }
171 int get_ichannels() { return in_channels; }
172 int get_ochannels() { return out_channels; }
173 int get_ibits() { return in_bits; }
174 int get_obits() { return out_bits; }
175 int get_irate() { return in_samplerate; }
176 int get_orate() { return out_samplerate; }
177 int get_irealtime() { return in_realtime; }
178 int get_orealtime() { return out_realtime; }
179 int get_device_buffer() { return device_buffer; }
180 int64_t get_samples_written() { return total_samples_written; }
181 int64_t get_samples_output() { return total_samples_output; }
182 int64_t get_samples_read() { return total_samples_read; }
183 int64_t get_samples_input() { return total_samples_input; }
184 int get_idmix() { return in51_2; }
185 int get_odmix() { return out51_2; }
186 int get_play_gain() { return play_gain; }
187 int get_record_gain() { return rec_gain; }
192 // Create a lowlevel driver out of the driver ID
193 int create_lowlevel(AudioLowLevel* &lowlevel, int driver,int in);
194 int arm_buffer(int buffer, double **output, int channels,
195 int samples, int64_t sample_position, double bfr_time);
196 int read_inactive() {
197 int result = !is_recording || recording_interrupted || in_config_updated;
200 // Override configured parameters depending on the driver
201 int in_samplerate, out_samplerate;
202 int in_bits, out_bits;
203 int in_channels, out_channels;
204 int in_samples, out_samples;
205 int in_realtime, out_realtime;
207 int in_config_updated;
211 // Video device to pass data to if the same device handles video
212 VideoDevice *vdevice;
213 // bits in output file 1 or 0
214 int rec_dither, play_dither;
215 double rec_gain, play_gain;
219 // background loop for playback
220 AudioThread *audio_out;
223 void stop_output(int wait);
224 // background loop for recording
225 AudioThread *audio_in;
229 // writes input to output, follows input config
230 void monitor_buffer(Samples **input, int channels,
231 int samples, int ioffset, double bfr_time);
234 class input_buffer_t {
239 } input[TOTAL_AUDIO_BUFFERS];
240 class output_buffer_t {
245 int64_t sample_position;
247 Condition *play_lock;
249 } output[TOTAL_AUDIO_BUFFERS];
252 // Get buffer_lock to delay before locking to allow read_buffer to lock it.
254 Condition *polling_lock;
258 double last_buffer_time;
259 int position_correction;
261 // prevent the counter from going backwards
263 Timer *playback_timer;
268 int global_timer_started;
269 int software_position_info;
270 int playback_interrupted;
271 int recording_interrupted;
272 int idriver, odriver;
274 // Multiple data paths can be opened simultaneously by Record when monitoring
275 AudioLowLevel *lowlevel_in, *lowlevel_out;
276 AudioOutConfig *out_config;
277 AudioInConfig *in_config;
278 // Extra configuration if shared with video
279 VideoInConfig *vconfig;
281 // Buffer being used by the hardware
282 int input_buffer_count;
284 int input_buffer_out;
285 int input_buffer_offset;
286 int output_buffer_num;
287 // for position information
288 int64_t total_samples_read;
289 int64_t total_samples_input;
290 int64_t total_samples_written;
291 int64_t total_samples_output;
299 AudioLowLevel(AudioDevice *device);
300 virtual ~AudioLowLevel();
302 virtual int open_input() { return 1; };
303 virtual int open_output() { return 1; };
304 virtual int close_all() { return 1; };
305 virtual int interrupt_crash() { return 0; };
306 virtual int64_t device_position() { return -1; };
307 virtual int64_t samples_output() { return -1; };
308 virtual int write_buffer(char *buffer, int size) { return 1; };
309 virtual int read_buffer(char *buffer, int size) { return -1; };
310 virtual int flush_device() { return 1; };
311 virtual int interrupt_playback() { return 1; };
312 virtual double device_timestamp() {
313 struct timeval tv; gettimeofday(&tv, 0);
314 return tv.tv_sec + tv.tv_usec / 1000000.0;
316 virtual int start_toc(const char *path, const char *toc_path) { return -1; }
317 virtual int start_record(int fd, int bsz=0) { return -1; }
318 virtual int stop_record() { return -1; }
319 virtual int total_audio_channels() {
320 return device ? device->get_ichannels() : 0;
322 virtual DeviceMPEGInput *mpeg_device() { return 0; }