2 * BeOS audio play interface
3 * Copyright (c) 2000, 2001 Fabrice Bellard.
5 * This file is part of FFmpeg.
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.
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.
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
29 #include <Application.h>
30 #include <SoundPlayer.h>
36 #ifdef HAVE_BSOUNDRECORDER
37 #include <SoundRecorder.h>
38 using namespace BPrivate::Media::Experimental;
41 /* enable performance checks */
44 /* enable Media Kit latency checks */
45 //#define LATENCY_CHECK
47 #define AUDIO_BLOCK_SIZE 4096
48 #define AUDIO_BLOCK_COUNT 8
50 #define AUDIO_BUFFER_SIZE (AUDIO_BLOCK_SIZE*AUDIO_BLOCK_COUNT)
56 int frame_size; /* in bytes ! */
58 uint8_t buffer[AUDIO_BUFFER_SIZE];
66 #ifdef HAVE_BSOUNDRECORDER
67 BSoundRecorder *recorder;
69 int has_quit; /* signal callbacks not to wait */
70 volatile bigtime_t starve_time;
73 static thread_id main_thid;
74 static thread_id bapp_thid;
75 static int own_BApp_created = 0;
76 static int refcount = 0;
78 /* create the BApplication and Run() it */
79 static int32 bapp_thread(void *arg)
81 new BApplication("application/x-vnd.ffmpeg");
84 /* kill the process group */
86 // kill(main_thid, SIGHUP);
90 /* create the BApplication only if needed */
91 static void create_bapp_if_needed(void)
93 if (refcount++ == 0) {
94 /* needed by libmedia */
96 bapp_thid = spawn_thread(bapp_thread, "ffmpeg BApplication", B_NORMAL_PRIORITY, NULL);
97 resume_thread(bapp_thid);
98 while (!own_BApp_created)
104 static void destroy_bapp_if_needed(void)
106 if (--refcount == 0 && own_BApp_created) {
113 /* called back by BSoundPlayer */
114 static void audioplay_callback(void *cookie, void *buffer, size_t bufferSize, const media_raw_audio_format &format)
118 unsigned char *buf = (unsigned char *)buffer;
120 s = (AudioData *)cookie;
123 while (bufferSize > 0) {
128 len = MIN(AUDIO_BLOCK_SIZE, bufferSize);
129 if (acquire_sem_etc(s->output_sem, len, B_CAN_INTERRUPT, 0LL) < B_OK) {
131 s->player->SetHasData(false);
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;
143 release_sem_etc(s->input_sem, len, 0);
145 t = system_time() - t;
146 s->starve_time = MAX(s->starve_time, t);
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)
159 unsigned char *buf = (unsigned char *)buffer;
161 s = (AudioData *)cookie;
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) {
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;
180 release_sem_etc(s->output_sem, len, 0);
181 //printf("release_sem(output, %d)\n", len);
188 static int audio_open(AudioData *s, int is_output, const char *audio_device)
192 media_raw_audio_format format;
193 media_multi_audio_format iformat;
195 #ifndef HAVE_BSOUNDRECORDER
197 return AVERROR(EIO); /* not for now */
199 s->input_sem = create_sem(AUDIO_BUFFER_SIZE, "ffmpeg_ringbuffer_input");
200 if (s->input_sem < B_OK)
202 s->output_sem = create_sem(0, "ffmpeg_ringbuffer_output");
203 if (s->output_sem < B_OK) {
204 delete_sem(s->input_sem);
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
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);
222 if (s->recorder->InitCheck() != B_OK || iformat.format != media_raw_audio_format::B_AUDIO_SHORT) {
226 delete_sem(s->input_sem);
228 delete_sem(s->output_sem);
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();
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) {
252 delete_sem(s->input_sem);
254 delete_sem(s->output_sem);
257 s->player->SetCookie(s);
258 s->player->SetVolume(1.0);
260 s->player->SetHasData(true);
264 static int audio_close(AudioData *s)
267 delete_sem(s->input_sem);
269 delete_sem(s->output_sem);
276 #ifdef HAVE_BSOUNDRECORDER
280 destroy_bapp_if_needed();
284 /* sound output support */
285 static int audio_write_header(AVFormatContext *s1)
287 AudioData *s = (AudioData *)s1->priv_data;
292 s->sample_rate = st->codec->sample_rate;
293 s->channels = st->codec->channels;
294 ret = audio_open(s, 1, NULL);
300 static int audio_write_packet(AVFormatContext *s1, int stream_index,
301 const uint8_t *buf, int size, int64_t force_pts)
303 AudioData *s = (AudioData *)s1->priv_data;
306 bigtime_t lat1, lat2;
307 lat1 = s->player->Latency();
310 bigtime_t t = s->starve_time;
312 printf("starve_time: %lld \n", t);
316 len = MIN(size, AUDIO_BLOCK_SIZE);
317 if (acquire_sem_etc(s->input_sem, len, B_CAN_INTERRUPT, 0LL) < B_OK)
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;
327 release_sem_etc(s->output_sem, len, 0);
332 lat2 = s->player->Latency();
333 printf("#### BSoundPlayer::Latency(): before= %lld, after= %lld\n", lat1, lat2);
338 static int audio_write_trailer(AVFormatContext *s1)
340 AudioData *s = (AudioData *)s1->priv_data;
348 static int audio_read_header(AVFormatContext *s1, AVFormatParameters *ap)
350 AudioData *s = (AudioData *)s1->priv_data;
354 if (!ap || ap->sample_rate <= 0 || ap->channels <= 0)
357 st = av_new_stream(s1, 0);
359 return AVERROR(ENOMEM);
361 s->sample_rate = ap->sample_rate;
362 s->channels = ap->channels;
364 ret = audio_open(s, 0, s1->filename);
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;
375 av_set_pts_info(s1, 48, 1, 1000000); /* 48 bits pts in us */
378 static int audio_read_packet(AVFormatContext *s1, AVPacket *pkt)
380 AudioData *s = (AudioData *)s1->priv_data;
386 if (av_new_packet(pkt, s->frame_size) < 0)
388 buf = (unsigned char *)pkt->data;
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);
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;
407 release_sem_etc(s->input_sem, len, 0);
408 //printf("release_sem(input, %d)\n", len);
416 static int audio_read_close(AVFormatContext *s1)
418 AudioData *s = (AudioData *)s1->priv_data;
424 static AVInputFormat audio_demuxer = {
426 "audio grab and output",
436 AVOutputFormat audio_muxer = {
438 "audio grab and output",
442 #ifdef WORDS_BIGENDIAN
458 main_thid = find_thread(NULL);
459 av_register_input_format(&audio_demuxer);
460 av_register_output_format(&audio_muxer);