Separate audio_(de)muxer into oss_(de)muxer and audio_beos_(de)muxer
[libav.git] / libavformat / beosaudio.cpp
1 /*
2 * BeOS audio play interface
3 * Copyright (c) 2000, 2001 Fabrice Bellard.
4 *
5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22 #include <signal.h>
23 #include <stdlib.h>
24 #include <stdio.h>
25 #include <string.h>
26 #include <unistd.h>
27 #include <sys/time.h>
28
29 #include <Application.h>
30 #include <SoundPlayer.h>
31
32 extern "C" {
33 #include "avformat.h"
34 }
35
36 #ifdef HAVE_BSOUNDRECORDER
37 #include <SoundRecorder.h>
38 using namespace BPrivate::Media::Experimental;
39 #endif
40
41 /* enable performance checks */
42 //#define PERF_CHECK
43
44 /* enable Media Kit latency checks */
45 //#define LATENCY_CHECK
46
47 #define AUDIO_BLOCK_SIZE 4096
48 #define AUDIO_BLOCK_COUNT 8
49
50 #define AUDIO_BUFFER_SIZE (AUDIO_BLOCK_SIZE*AUDIO_BLOCK_COUNT)
51
52 typedef struct {
53 int fd; // UNUSED
54 int sample_rate;
55 int channels;
56 int frame_size; /* in bytes ! */
57 CodecID codec_id;
58 uint8_t buffer[AUDIO_BUFFER_SIZE];
59 int buffer_ptr;
60 /* ring buffer */
61 sem_id input_sem;
62 int input_index;
63 sem_id output_sem;
64 int output_index;
65 BSoundPlayer *player;
66 #ifdef HAVE_BSOUNDRECORDER
67 BSoundRecorder *recorder;
68 #endif
69 int has_quit; /* signal callbacks not to wait */
70 volatile bigtime_t starve_time;
71 } AudioData;
72
73 static thread_id main_thid;
74 static thread_id bapp_thid;
75 static int own_BApp_created = 0;
76 static int refcount = 0;
77
78 /* create the BApplication and Run() it */
79 static int32 bapp_thread(void *arg)
80 {
81 new BApplication("application/x-vnd.ffmpeg");
82 own_BApp_created = 1;
83 be_app->Run();
84 /* kill the process group */
85 // kill(0, SIGINT);
86 // kill(main_thid, SIGHUP);
87 return B_OK;
88 }
89
90 /* create the BApplication only if needed */
91 static void create_bapp_if_needed(void)
92 {
93 if (refcount++ == 0) {
94 /* needed by libmedia */
95 if (be_app == NULL) {
96 bapp_thid = spawn_thread(bapp_thread, "ffmpeg BApplication", B_NORMAL_PRIORITY, NULL);
97 resume_thread(bapp_thid);
98 while (!own_BApp_created)
99 snooze(50000);
100 }
101 }
102 }
103
104 static void destroy_bapp_if_needed(void)
105 {
106 if (--refcount == 0 && own_BApp_created) {
107 be_app->Lock();
108 be_app->Quit();
109 be_app = NULL;
110 }
111 }
112
113 /* called back by BSoundPlayer */
114 static void audioplay_callback(void *cookie, void *buffer, size_t bufferSize, const media_raw_audio_format &format)
115 {
116 AudioData *s;
117 size_t len, amount;
118 unsigned char *buf = (unsigned char *)buffer;
119
120 s = (AudioData *)cookie;
121 if (s->has_quit)
122 return;
123 while (bufferSize > 0) {
124 #ifdef PERF_CHECK
125 bigtime_t t;
126 t = system_time();
127 #endif
128 len = MIN(AUDIO_BLOCK_SIZE, bufferSize);
129 if (acquire_sem_etc(s->output_sem, len, B_CAN_INTERRUPT, 0LL) < B_OK) {
130 s->has_quit = 1;
131 s->player->SetHasData(false);
132 return;
133 }
134 amount = MIN(len, (AUDIO_BUFFER_SIZE - s->output_index));
135 memcpy(buf, &s->buffer[s->output_index], amount);
136 s->output_index += amount;
137 if (s->output_index >= AUDIO_BUFFER_SIZE) {
138 s->output_index %= AUDIO_BUFFER_SIZE;
139 memcpy(buf + amount, &s->buffer[s->output_index], len - amount);
140 s->output_index += len-amount;
141 s->output_index %= AUDIO_BUFFER_SIZE;
142 }
143 release_sem_etc(s->input_sem, len, 0);
144 #ifdef PERF_CHECK
145 t = system_time() - t;
146 s->starve_time = MAX(s->starve_time, t);
147 #endif
148 buf += len;
149 bufferSize -= len;
150 }
151 }
152
153 #ifdef HAVE_BSOUNDRECORDER
154 /* called back by BSoundRecorder */
155 static void audiorecord_callback(void *cookie, bigtime_t timestamp, void *buffer, size_t bufferSize, const media_multi_audio_format &format)
156 {
157 AudioData *s;
158 size_t len, amount;
159 unsigned char *buf = (unsigned char *)buffer;
160
161 s = (AudioData *)cookie;
162 if (s->has_quit)
163 return;
164
165 while (bufferSize > 0) {
166 len = MIN(bufferSize, AUDIO_BLOCK_SIZE);
167 //printf("acquire_sem(input, %d)\n", len);
168 if (acquire_sem_etc(s->input_sem, len, B_CAN_INTERRUPT, 0LL) < B_OK) {
169 s->has_quit = 1;
170 return;
171 }
172 amount = MIN(len, (AUDIO_BUFFER_SIZE - s->input_index));
173 memcpy(&s->buffer[s->input_index], buf, amount);
174 s->input_index += amount;
175 if (s->input_index >= AUDIO_BUFFER_SIZE) {
176 s->input_index %= AUDIO_BUFFER_SIZE;
177 memcpy(&s->buffer[s->input_index], buf + amount, len - amount);
178 s->input_index += len - amount;
179 }
180 release_sem_etc(s->output_sem, len, 0);
181 //printf("release_sem(output, %d)\n", len);
182 buf += len;
183 bufferSize -= len;
184 }
185 }
186 #endif
187
188 static int audio_open(AudioData *s, int is_output, const char *audio_device)
189 {
190 int p[2];
191 int ret;
192 media_raw_audio_format format;
193 media_multi_audio_format iformat;
194
195 #ifndef HAVE_BSOUNDRECORDER
196 if (!is_output)
197 return AVERROR(EIO); /* not for now */
198 #endif
199 s->input_sem = create_sem(AUDIO_BUFFER_SIZE, "ffmpeg_ringbuffer_input");
200 if (s->input_sem < B_OK)
201 return AVERROR(EIO);
202 s->output_sem = create_sem(0, "ffmpeg_ringbuffer_output");
203 if (s->output_sem < B_OK) {
204 delete_sem(s->input_sem);
205 return AVERROR(EIO);
206 }
207 s->input_index = 0;
208 s->output_index = 0;
209 create_bapp_if_needed();
210 s->frame_size = AUDIO_BLOCK_SIZE;
211 /* bump up the priority (avoid realtime though) */
212 set_thread_priority(find_thread(NULL), B_DISPLAY_PRIORITY+1);
213 #ifdef HAVE_BSOUNDRECORDER
214 if (!is_output) {
215 bool wait_for_input = false;
216 if (audio_device && !strcmp(audio_device, "wait:"))
217 wait_for_input = true;
218 s->recorder = new BSoundRecorder(&iformat, wait_for_input, "ffmpeg input", audiorecord_callback);
219 if (wait_for_input && (s->recorder->InitCheck() == B_OK)) {
220 s->recorder->WaitForIncomingConnection(&iformat);
221 }
222 if (s->recorder->InitCheck() != B_OK || iformat.format != media_raw_audio_format::B_AUDIO_SHORT) {
223 delete s->recorder;
224 s->recorder = NULL;
225 if (s->input_sem)
226 delete_sem(s->input_sem);
227 if (s->output_sem)
228 delete_sem(s->output_sem);
229 return AVERROR(EIO);
230 }
231 s->codec_id = (iformat.byte_order == B_MEDIA_LITTLE_ENDIAN)?CODEC_ID_PCM_S16LE:CODEC_ID_PCM_S16BE;
232 s->channels = iformat.channel_count;
233 s->sample_rate = (int)iformat.frame_rate;
234 s->frame_size = iformat.buffer_size;
235 s->recorder->SetCookie(s);
236 s->recorder->SetVolume(1.0);
237 s->recorder->Start();
238 return 0;
239 }
240 #endif
241 format = media_raw_audio_format::wildcard;
242 format.format = media_raw_audio_format::B_AUDIO_SHORT;
243 format.byte_order = B_HOST_IS_LENDIAN ? B_MEDIA_LITTLE_ENDIAN : B_MEDIA_BIG_ENDIAN;
244 format.channel_count = s->channels;
245 format.buffer_size = s->frame_size;
246 format.frame_rate = s->sample_rate;
247 s->player = new BSoundPlayer(&format, "ffmpeg output", audioplay_callback);
248 if (s->player->InitCheck() != B_OK) {
249 delete s->player;
250 s->player = NULL;
251 if (s->input_sem)
252 delete_sem(s->input_sem);
253 if (s->output_sem)
254 delete_sem(s->output_sem);
255 return AVERROR(EIO);
256 }
257 s->player->SetCookie(s);
258 s->player->SetVolume(1.0);
259 s->player->Start();
260 s->player->SetHasData(true);
261 return 0;
262 }
263
264 static int audio_close(AudioData *s)
265 {
266 if (s->input_sem)
267 delete_sem(s->input_sem);
268 if (s->output_sem)
269 delete_sem(s->output_sem);
270 s->has_quit = 1;
271 if (s->player) {
272 s->player->Stop();
273 }
274 if (s->player)
275 delete s->player;
276 #ifdef HAVE_BSOUNDRECORDER
277 if (s->recorder)
278 delete s->recorder;
279 #endif
280 destroy_bapp_if_needed();
281 return 0;
282 }
283
284 /* sound output support */
285 static int audio_write_header(AVFormatContext *s1)
286 {
287 AudioData *s = (AudioData *)s1->priv_data;
288 AVStream *st;
289 int ret;
290
291 st = s1->streams[0];
292 s->sample_rate = st->codec->sample_rate;
293 s->channels = st->codec->channels;
294 ret = audio_open(s, 1, NULL);
295 if (ret < 0)
296 return AVERROR(EIO);
297 return 0;
298 }
299
300 static int audio_write_packet(AVFormatContext *s1, int stream_index,
301 const uint8_t *buf, int size, int64_t force_pts)
302 {
303 AudioData *s = (AudioData *)s1->priv_data;
304 int len, ret;
305 #ifdef LATENCY_CHECK
306 bigtime_t lat1, lat2;
307 lat1 = s->player->Latency();
308 #endif
309 #ifdef PERF_CHECK
310 bigtime_t t = s->starve_time;
311 s->starve_time = 0;
312 printf("starve_time: %lld \n", t);
313 #endif
314 while (size > 0) {
315 int amount;
316 len = MIN(size, AUDIO_BLOCK_SIZE);
317 if (acquire_sem_etc(s->input_sem, len, B_CAN_INTERRUPT, 0LL) < B_OK)
318 return AVERROR(EIO);
319 amount = MIN(len, (AUDIO_BUFFER_SIZE - s->input_index));
320 memcpy(&s->buffer[s->input_index], buf, amount);
321 s->input_index += amount;
322 if (s->input_index >= AUDIO_BUFFER_SIZE) {
323 s->input_index %= AUDIO_BUFFER_SIZE;
324 memcpy(&s->buffer[s->input_index], buf + amount, len - amount);
325 s->input_index += len - amount;
326 }
327 release_sem_etc(s->output_sem, len, 0);
328 buf += len;
329 size -= len;
330 }
331 #ifdef LATENCY_CHECK
332 lat2 = s->player->Latency();
333 printf("#### BSoundPlayer::Latency(): before= %lld, after= %lld\n", lat1, lat2);
334 #endif
335 return 0;
336 }
337
338 static int audio_write_trailer(AVFormatContext *s1)
339 {
340 AudioData *s = (AudioData *)s1->priv_data;
341
342 audio_close(s);
343 return 0;
344 }
345
346 /* grab support */
347
348 static int audio_read_header(AVFormatContext *s1, AVFormatParameters *ap)
349 {
350 AudioData *s = (AudioData *)s1->priv_data;
351 AVStream *st;
352 int ret;
353
354 if (!ap || ap->sample_rate <= 0 || ap->channels <= 0)
355 return -1;
356
357 st = av_new_stream(s1, 0);
358 if (!st) {
359 return AVERROR(ENOMEM);
360 }
361 s->sample_rate = ap->sample_rate;
362 s->channels = ap->channels;
363
364 ret = audio_open(s, 0, s1->filename);
365 if (ret < 0) {
366 av_free(st);
367 return AVERROR(EIO);
368 }
369 /* take real parameters */
370 st->codec->codec_type = CODEC_TYPE_AUDIO;
371 st->codec->codec_id = s->codec_id;
372 st->codec->sample_rate = s->sample_rate;
373 st->codec->channels = s->channels;
374 return 0;
375 av_set_pts_info(s1, 48, 1, 1000000); /* 48 bits pts in us */
376 }
377
378 static int audio_read_packet(AVFormatContext *s1, AVPacket *pkt)
379 {
380 AudioData *s = (AudioData *)s1->priv_data;
381 int size;
382 size_t len, amount;
383 unsigned char *buf;
384 status_t err;
385
386 if (av_new_packet(pkt, s->frame_size) < 0)
387 return AVERROR(EIO);
388 buf = (unsigned char *)pkt->data;
389 size = pkt->size;
390 while (size > 0) {
391 len = MIN(AUDIO_BLOCK_SIZE, size);
392 //printf("acquire_sem(output, %d)\n", len);
393 while ((err=acquire_sem_etc(s->output_sem, len, B_CAN_INTERRUPT, 0LL)) == B_INTERRUPTED);
394 if (err < B_OK) {
395 av_free_packet(pkt);
396 return AVERROR(EIO);
397 }
398 amount = MIN(len, (AUDIO_BUFFER_SIZE - s->output_index));
399 memcpy(buf, &s->buffer[s->output_index], amount);
400 s->output_index += amount;
401 if (s->output_index >= AUDIO_BUFFER_SIZE) {
402 s->output_index %= AUDIO_BUFFER_SIZE;
403 memcpy(buf + amount, &s->buffer[s->output_index], len - amount);
404 s->output_index += len-amount;
405 s->output_index %= AUDIO_BUFFER_SIZE;
406 }
407 release_sem_etc(s->input_sem, len, 0);
408 //printf("release_sem(input, %d)\n", len);
409 buf += len;
410 size -= len;
411 }
412 //XXX: add pts info
413 return 0;
414 }
415
416 static int audio_read_close(AVFormatContext *s1)
417 {
418 AudioData *s = (AudioData *)s1->priv_data;
419
420 audio_close(s);
421 return 0;
422 }
423
424 static AVInputFormat audio_beos_demuxer = {
425 "audio_device",
426 "audio grab and output",
427 sizeof(AudioData),
428 NULL,
429 audio_read_header,
430 audio_read_packet,
431 audio_read_close,
432 NULL,
433 AVFMT_NOFILE,
434 };
435
436 AVOutputFormat audio_beos_muxer = {
437 "audio_device",
438 "audio grab and output",
439 "",
440 "",
441 sizeof(AudioData),
442 #ifdef WORDS_BIGENDIAN
443 CODEC_ID_PCM_S16BE,
444 #else
445 CODEC_ID_PCM_S16LE,
446 #endif
447 CODEC_ID_NONE,
448 audio_write_header,
449 audio_write_packet,
450 audio_write_trailer,
451 AVFMT_NOFILE,
452 };
453
454 extern "C" {
455
456 int audio_init(void)
457 {
458 main_thid = find_thread(NULL);
459 av_register_input_format(&audio_beos_demuxer);
460 av_register_output_format(&audio_beos_muxer);
461 return 0;
462 }
463
464 } // "C"
465