static int audio_read_header(AVFormatContext *s1)
{
OSSAudioData *s = s1->priv_data;
AVStream *st;
int ret;
st = avformat_new_stream(s1, NULL);
if (!st) {
return AVERROR(ENOMEM);
}
ret = oss_audio_open(s1, 0, s1->filename);
if (ret < 0) {
return AVERROR(EIO);
}
/* take real parameters */
st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
st->codecpar->codec_id = s->codec_id;
st->codecpar->sample_rate = s->sample_rate;
st->codecpar->channels = s->channels;
avpriv_set_pts_info(st, 64, 1, 1000000); /* 64 bits pts in us */
return 0;
}
void *audio_open(uint8_t devtype, devpath_t *devpath, uint32_t *samplerate)
{
void *ao = NULL;
#ifdef __linux__
if (devtype == 'a') goto try_alsa;
#endif
#if !defined(_WIN32) && !defined(_WIN64)
if (devtype == 'o') goto try_oss;
#endif
#if (defined(_WIN32) || defined(_WIN64))
if ((devtype == 's') || (devtype == 'S')) goto try_nt_wdmks;
#ifdef ENABLE_WINMM
if (devtype == 'm') goto try_winmm;
#endif
#endif
#ifdef __linux__
if (!ao) {
try_alsa:
ao = alsa_audio_open(devpath, samplerate, NULL);
if (ao) {
audio_write_flt = alsa_audio_write_flt;
audio_write_s16 = alsa_audio_write_s16;
audio_close = alsa_audio_close;
return ao;
}
}
#endif
#if !defined(_WIN32) && !defined(_WIN64)
if (!ao) {
try_oss:
ao = oss_audio_open(devpath, samplerate);
if (ao) {
audio_write_flt = oss_audio_write_flt;
audio_write_s16 = oss_audio_write_s16;
audio_close = oss_audio_close;
return ao;
}
}
#endif
#if (defined(_WIN32) || defined(_WIN64))
if (!ao) {
try_nt_wdmks:
ao = audio_wdmks_open(devpath, samplerate);
if (ao) {
audio_close = audio_wdmks_close; // audio_wdmks_open will already have initialized audio_write for us.
return ao;
}
#ifdef ENABLE_WINMM
}
if (!ao) {
try_winmm:
ao = audio_winmm_open(samplerate);
if (ao) {
audio_write_flt = audio_winmm_write_flt;
audio_write_s16 = audio_winmm_write_s16;
audio_close = audio_winmm_close;
return ao;
}
}
#endif
#endif
if (!ao) {
//audio_wrerr("Tried all sound devices, none were successfully opened. Exiting...\n");
return NULL;
}
return ao;
}
