29 #include <soundcard.h>
31 #include <sys/soundcard.h>
35 #include <sys/ioctl.h>
37 #include <sys/select.h>
45 #define AUDIO_BLOCK_SIZE 4096
54 unsigned int flip_left : 1;
64 char *
flip = getenv(
"AUDIO_FLIP_LEFT");
67 audio_fd = open(audio_device, O_WRONLY);
69 audio_fd = open(audio_device, O_RDONLY);
75 if (flip && *flip ==
'1') {
81 fcntl(audio_fd, F_SETFL, O_NONBLOCK);
86 err = ioctl(audio_fd, SNDCTL_DSP_GETFMTS, &tmp);
89 if (tmp & AFMT_S16_BE) {
91 }
else if (tmp & AFMT_S16_LE) {
97 if (tmp & AFMT_S16_LE) {
99 }
else if (tmp & AFMT_S16_BE) {
118 err=ioctl(audio_fd, SNDCTL_DSP_SETFMT, &tmp);
125 err = ioctl(audio_fd, SNDCTL_DSP_STEREO, &tmp);
132 err = ioctl(audio_fd, SNDCTL_DSP_SPEED, &tmp);
175 uint8_t *buf= pkt->
data;
186 if (ret < 0 && (errno != EAGAIN && errno != EINTR))
238 struct audio_buf_info abufi;
247 if (ret<0)
return AVERROR(errno);
255 if (ioctl(s->
fd, SNDCTL_DSP_GETISPACE, &abufi) == 0) {
256 bdelay += abufi.bytes;
266 short *p = (
short *) pkt->
data;
268 for (i = 0; i < ret; i += 4) {
291 static const AVClass oss_demuxer_class = {
306 .priv_class = &oss_demuxer_class,
310 #if CONFIG_OSS_OUTDEV