27 #include <soundcard.h>
29 #include <sys/soundcard.h>
36 #include <sys/ioctl.h>
46 const char *audio_device)
51 char *
flip = getenv(
"AUDIO_FLIP_LEFT");
62 if (flip && *flip ==
'1') {
68 if (fcntl(audio_fd, F_SETFL, O_NONBLOCK) < 0) {
69 av_log(s1,
AV_LOG_WARNING,
"%s: Could not enable non block mode (%s)\n", audio_device, strerror(errno));
75 #define CHECK_IOCTL_ERROR(event) \
77 av_log(s1, AV_LOG_ERROR, #event ": %s\n", strerror(errno)); \
85 err = ioctl(audio_fd, SNDCTL_DSP_GETFMTS, &tmp);
91 if (tmp & AFMT_S16_BE) {
93 }
else if (tmp & AFMT_S16_LE) {
99 if (tmp & AFMT_S16_LE) {
101 }
else if (tmp & AFMT_S16_BE) {
120 err=ioctl(audio_fd, SNDCTL_DSP_SETFMT, &tmp);
124 err = ioctl(audio_fd, SNDCTL_DSP_STEREO, &tmp);
128 err = ioctl(audio_fd, SNDCTL_DSP_SPEED, &tmp);
137 #undef CHECK_IOCTL_ERROR