2 * BeOS audio play interface
3 * Copyright (c) 2000, 2001 Fabrice Bellard.
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
15 * You should have received a copy of the GNU Lesser General Public
16 * License along with this library; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
27 #include <Application.h>
28 #include <SoundPlayer.h>
34 #ifdef HAVE_BSOUNDRECORDER
35 #include <SoundRecorder.h>
36 using namespace BPrivate::Media::Experimental;
39 /* enable performance checks */
42 /* enable Media Kit latency checks */
43 //#define LATENCY_CHECK
45 #define AUDIO_BLOCK_SIZE 4096
46 #define AUDIO_BLOCK_COUNT 8
48 #define AUDIO_BUFFER_SIZE (AUDIO_BLOCK_SIZE*AUDIO_BLOCK_COUNT)
54 int frame_size; /* in bytes ! */
56 uint8_t buffer[AUDIO_BUFFER_SIZE];
64 #ifdef HAVE_BSOUNDRECORDER
65 BSoundRecorder *recorder;
67 int has_quit; /* signal callbacks not to wait */
68 volatile bigtime_t starve_time;
71 static thread_id main_thid;
72 static thread_id bapp_thid;
73 static int own_BApp_created = 0;
74 static int refcount = 0;
76 /* create the BApplication and Run() it */
77 static int32 bapp_thread(void *arg)
79 new BApplication("application/x-vnd.ffmpeg");
82 /* kill the process group */
84 // kill(main_thid, SIGHUP);
88 /* create the BApplication only if needed */
89 static void create_bapp_if_needed(void)
91 if (refcount++ == 0) {
92 /* needed by libmedia */
94 bapp_thid = spawn_thread(bapp_thread, "ffmpeg BApplication", B_NORMAL_PRIORITY, NULL);
95 resume_thread(bapp_thid);
96 while (!own_BApp_created)
102 static void destroy_bapp_if_needed(void)
104 if (--refcount == 0 && own_BApp_created) {
111 /* called back by BSoundPlayer */
112 static void audioplay_callback(void *cookie, void *buffer, size_t bufferSize, const media_raw_audio_format &format)
116 unsigned char *buf = (unsigned char *)buffer;
118 s = (AudioData *)cookie;
121 while (bufferSize > 0) {
126 len = MIN(AUDIO_BLOCK_SIZE, bufferSize);
127 if (acquire_sem_etc(s->output_sem, len, B_CAN_INTERRUPT, 0LL) < B_OK) {
129 s->player->SetHasData(false);
132 amount = MIN(len, (AUDIO_BUFFER_SIZE - s->output_index));
133 memcpy(buf, &s->buffer[s->output_index], amount);
134 s->output_index += amount;
135 if (s->output_index >= AUDIO_BUFFER_SIZE) {
136 s->output_index %= AUDIO_BUFFER_SIZE;
137 memcpy(buf + amount, &s->buffer[s->output_index], len - amount);
138 s->output_index += len-amount;
139 s->output_index %= AUDIO_BUFFER_SIZE;
141 release_sem_etc(s->input_sem, len, 0);
143 t = system_time() - t;
144 s->starve_time = MAX(s->starve_time, t);
151 #ifdef HAVE_BSOUNDRECORDER
152 /* called back by BSoundRecorder */
153 static void audiorecord_callback(void *cookie, bigtime_t timestamp, void *buffer, size_t bufferSize, const media_multi_audio_format &format)
157 unsigned char *buf = (unsigned char *)buffer;
159 s = (AudioData *)cookie;
163 while (bufferSize > 0) {
164 len = MIN(bufferSize, AUDIO_BLOCK_SIZE);
165 //printf("acquire_sem(input, %d)\n", len);
166 if (acquire_sem_etc(s->input_sem, len, B_CAN_INTERRUPT, 0LL) < B_OK) {
170 amount = MIN(len, (AUDIO_BUFFER_SIZE - s->input_index));
171 memcpy(&s->buffer[s->input_index], buf, amount);
172 s->input_index += amount;
173 if (s->input_index >= AUDIO_BUFFER_SIZE) {
174 s->input_index %= AUDIO_BUFFER_SIZE;
175 memcpy(&s->buffer[s->input_index], buf + amount, len - amount);
176 s->input_index += len - amount;
178 release_sem_etc(s->output_sem, len, 0);
179 //printf("release_sem(output, %d)\n", len);
186 static int audio_open(AudioData *s, int is_output, const char *audio_device)
190 media_raw_audio_format format;
191 media_multi_audio_format iformat;
193 #ifndef HAVE_BSOUNDRECORDER
195 return -EIO; /* not for now */
197 s->input_sem = create_sem(AUDIO_BUFFER_SIZE, "ffmpeg_ringbuffer_input");
198 if (s->input_sem < B_OK)
200 s->output_sem = create_sem(0, "ffmpeg_ringbuffer_output");
201 if (s->output_sem < B_OK) {
202 delete_sem(s->input_sem);
207 create_bapp_if_needed();
208 s->frame_size = AUDIO_BLOCK_SIZE;
209 /* bump up the priority (avoid realtime though) */
210 set_thread_priority(find_thread(NULL), B_DISPLAY_PRIORITY+1);
211 #ifdef HAVE_BSOUNDRECORDER
213 bool wait_for_input = false;
214 if (audio_device && !strcmp(audio_device, "wait:"))
215 wait_for_input = true;
216 s->recorder = new BSoundRecorder(&iformat, wait_for_input, "ffmpeg input", audiorecord_callback);
217 if (wait_for_input && (s->recorder->InitCheck() == B_OK)) {
218 s->recorder->WaitForIncomingConnection(&iformat);
220 if (s->recorder->InitCheck() != B_OK || iformat.format != media_raw_audio_format::B_AUDIO_SHORT) {
224 delete_sem(s->input_sem);
226 delete_sem(s->output_sem);
229 s->codec_id = (iformat.byte_order == B_MEDIA_LITTLE_ENDIAN)?CODEC_ID_PCM_S16LE:CODEC_ID_PCM_S16BE;
230 s->channels = iformat.channel_count;
231 s->sample_rate = (int)iformat.frame_rate;
232 s->frame_size = iformat.buffer_size;
233 s->recorder->SetCookie(s);
234 s->recorder->SetVolume(1.0);
235 s->recorder->Start();
239 format = media_raw_audio_format::wildcard;
240 format.format = media_raw_audio_format::B_AUDIO_SHORT;
241 format.byte_order = B_HOST_IS_LENDIAN ? B_MEDIA_LITTLE_ENDIAN : B_MEDIA_BIG_ENDIAN;
242 format.channel_count = s->channels;
243 format.buffer_size = s->frame_size;
244 format.frame_rate = s->sample_rate;
245 s->player = new BSoundPlayer(&format, "ffmpeg output", audioplay_callback);
246 if (s->player->InitCheck() != B_OK) {
250 delete_sem(s->input_sem);
252 delete_sem(s->output_sem);
255 s->player->SetCookie(s);
256 s->player->SetVolume(1.0);
258 s->player->SetHasData(true);
262 static int audio_close(AudioData *s)
265 delete_sem(s->input_sem);
267 delete_sem(s->output_sem);
274 #ifdef HAVE_BSOUNDRECORDER
278 destroy_bapp_if_needed();
282 /* sound output support */
283 static int audio_write_header(AVFormatContext *s1)
285 AudioData *s = (AudioData *)s1->priv_data;
290 s->sample_rate = st->codec.sample_rate;
291 s->channels = st->codec.channels;
292 ret = audio_open(s, 1, NULL);
298 static int audio_write_packet(AVFormatContext *s1, int stream_index,
299 const uint8_t *buf, int size, int64_t force_pts)
301 AudioData *s = (AudioData *)s1->priv_data;
304 bigtime_t lat1, lat2;
305 lat1 = s->player->Latency();
308 bigtime_t t = s->starve_time;
310 printf("starve_time: %lld \n", t);
314 len = MIN(size, AUDIO_BLOCK_SIZE);
315 if (acquire_sem_etc(s->input_sem, len, B_CAN_INTERRUPT, 0LL) < B_OK)
317 amount = MIN(len, (AUDIO_BUFFER_SIZE - s->input_index));
318 memcpy(&s->buffer[s->input_index], buf, amount);
319 s->input_index += amount;
320 if (s->input_index >= AUDIO_BUFFER_SIZE) {
321 s->input_index %= AUDIO_BUFFER_SIZE;
322 memcpy(&s->buffer[s->input_index], buf + amount, len - amount);
323 s->input_index += len - amount;
325 release_sem_etc(s->output_sem, len, 0);
330 lat2 = s->player->Latency();
331 printf("#### BSoundPlayer::Latency(): before= %lld, after= %lld\n", lat1, lat2);
336 static int audio_write_trailer(AVFormatContext *s1)
338 AudioData *s = (AudioData *)s1->priv_data;
346 static int audio_read_header(AVFormatContext *s1, AVFormatParameters *ap)
348 AudioData *s = (AudioData *)s1->priv_data;
352 if (!ap || ap->sample_rate <= 0 || ap->channels <= 0)
355 st = av_new_stream(s1, 0);
359 s->sample_rate = ap->sample_rate;
360 s->channels = ap->channels;
362 ret = audio_open(s, 0, ap->device);
367 /* take real parameters */
368 st->codec.codec_type = CODEC_TYPE_AUDIO;
369 st->codec.codec_id = s->codec_id;
370 st->codec.sample_rate = s->sample_rate;
371 st->codec.channels = s->channels;
373 av_set_pts_info(s1, 48, 1, 1000000); /* 48 bits pts in us */
376 static int audio_read_packet(AVFormatContext *s1, AVPacket *pkt)
378 AudioData *s = (AudioData *)s1->priv_data;
384 if (av_new_packet(pkt, s->frame_size) < 0)
386 buf = (unsigned char *)pkt->data;
389 len = MIN(AUDIO_BLOCK_SIZE, size);
390 //printf("acquire_sem(output, %d)\n", len);
391 while ((err=acquire_sem_etc(s->output_sem, len, B_CAN_INTERRUPT, 0LL)) == B_INTERRUPTED);
396 amount = MIN(len, (AUDIO_BUFFER_SIZE - s->output_index));
397 memcpy(buf, &s->buffer[s->output_index], amount);
398 s->output_index += amount;
399 if (s->output_index >= AUDIO_BUFFER_SIZE) {
400 s->output_index %= AUDIO_BUFFER_SIZE;
401 memcpy(buf + amount, &s->buffer[s->output_index], len - amount);
402 s->output_index += len-amount;
403 s->output_index %= AUDIO_BUFFER_SIZE;
405 release_sem_etc(s->input_sem, len, 0);
406 //printf("release_sem(input, %d)\n", len);
414 static int audio_read_close(AVFormatContext *s1)
416 AudioData *s = (AudioData *)s1->priv_data;
422 static AVInputFormat audio_in_format = {
424 "audio grab and output",
434 AVOutputFormat audio_out_format = {
436 "audio grab and output",
440 #ifdef WORDS_BIGENDIAN
456 main_thid = find_thread(NULL);
457 av_register_input_format(&audio_in_format);
458 av_register_output_format(&audio_out_format);