29 #include <soundcard.h>
31 #include <sys/soundcard.h>
35 #include <sys/ioctl.h>
44 #define AUDIO_BLOCK_SIZE 4096
53 unsigned int flip_left : 1;
63 char *
flip = getenv(
"AUDIO_FLIP_LEFT");
66 audio_fd = open(audio_device, O_WRONLY);
68 audio_fd = open(audio_device, O_RDONLY);
74 if (flip && *flip ==
'1') {
80 fcntl(audio_fd, F_SETFL, O_NONBLOCK);
85 err = ioctl(audio_fd, SNDCTL_DSP_GETFMTS, &tmp);
88 if (tmp & AFMT_S16_BE) {
90 }
else if (tmp & AFMT_S16_LE) {
96 if (tmp & AFMT_S16_LE) {
98 }
else if (tmp & AFMT_S16_BE) {
117 err=ioctl(audio_fd, SNDCTL_DSP_SETFMT, &tmp);
124 err = ioctl(audio_fd, SNDCTL_DSP_STEREO, &tmp);
131 err = ioctl(audio_fd, SNDCTL_DSP_SPEED, &tmp);
185 if (ret < 0 && (errno != EAGAIN && errno != EINTR))
237 struct audio_buf_info abufi;
246 if (ret<0)
return AVERROR(errno);
254 if (ioctl(s->
fd, SNDCTL_DSP_GETISPACE, &abufi) == 0) {
255 bdelay += abufi.bytes;
265 short *p = (
short *) pkt->
data;
267 for (i = 0; i < ret; i += 4) {
290 static const AVClass oss_demuxer_class = {
304 .
flags = AVFMT_NOFILE,
305 .priv_class = &oss_demuxer_class,
309 #if CONFIG_OSS_OUTDEV