static int
per_client_init(RTSPContext *ctx) {
int i;
AVOutputFormat *fmt;
//
if((fmt = av_guess_format("rtp", NULL, NULL)) == NULL) {
ga_error("RTP not supported.\n");
return -1;
}
if((ctx->sdp_fmtctx = avformat_alloc_context()) == NULL) {
ga_error("create avformat context failed.\n");
return -1;
}
ctx->sdp_fmtctx->oformat = fmt;
// video stream
for(i = 0; i < video_source_channels(); i++) {
if((ctx->sdp_vstream[i] = ga_avformat_new_stream(
ctx->sdp_fmtctx,
i, rtspconf->video_encoder_codec)) == NULL) {
//
ga_error("cannot create new video stream (%d:%d)\n",
i, rtspconf->video_encoder_codec->id);
return -1;
}
if((ctx->sdp_vencoder[i] = ga_avcodec_vencoder_init(
ctx->sdp_vstream[i]->codec,
rtspconf->video_encoder_codec,
video_source_out_width(i), video_source_out_height(i),
rtspconf->video_fps,
rtspconf->vso)) == NULL) {
//
ga_error("cannot init video encoder\n");
return -1;
}
}
// audio stream
#ifdef ENABLE_AUDIO
if((ctx->sdp_astream = ga_avformat_new_stream(
ctx->sdp_fmtctx,
video_source_channels(),
rtspconf->audio_encoder_codec)) == NULL) {
ga_error("cannot create new audio stream (%d)\n",
rtspconf->audio_encoder_codec->id);
return -1;
}
if((ctx->sdp_aencoder = ga_avcodec_aencoder_init(
ctx->sdp_astream->codec,
rtspconf->audio_encoder_codec,
rtspconf->audio_bitrate,
rtspconf->audio_samplerate,
rtspconf->audio_channels,
rtspconf->audio_codec_format,
rtspconf->audio_codec_channel_layout)) == NULL) {
ga_error("cannot init audio encoder\n");
return -1;
}
#endif
if((ctx->mtu = ga_conf_readint("packet-size")) <= 0)
ctx->mtu = RTSP_TCP_MAX_PACKET_SIZE;
//
return 0;
}
int
asource_init(void *arg) {
int delay = 0;
struct RTSPConf *rtspconf = rtspconf_global();
if(initialized)
return 0;
//
if((delay = ga_conf_readint("audio-init-delay")) > 0) {
usleep(delay*1000);
}
//
audioparam.channels = rtspconf->audio_channels;
audioparam.samplerate = rtspconf->audio_samplerate;
if(rtspconf->audio_device_format == AV_SAMPLE_FMT_S16) {
#ifdef WIN32
#else
audioparam.format = SND_PCM_FORMAT_S16_LE;
#endif
audioparam.bits_per_sample = 16;
} else {
ga_error("audio source: unsupported audio format (%d).\n",
rtspconf->audio_device_format);
return -1;
}
if(rtspconf->audio_device_channel_layout != AV_CH_LAYOUT_STEREO) {
ga_error("audio source: unsupported channel layout (%llu).\n",
rtspconf->audio_device_channel_layout);
return -1;
}
#ifdef WIN32
if(ga_wasapi_init(&audioparam) < 0) {
ga_error("WASAPI: initialization failed.\n");
return -1;
}
#else
if((audioparam.handle = ga_alsa_init(&audioparam.sndlog)) == NULL) {
ga_error("ALSA: initialization failed.\n");
return -1;
}
if(ga_alsa_set_param(&audioparam) < 0) {
ga_alsa_close(audioparam.handle, audioparam.sndlog);
ga_error("ALSA: cannot set parameters\n");
return -1;
}
#endif
if(audio_source_setup(audioparam.chunk_size, audioparam.samplerate, audioparam.bits_per_sample, audioparam.channels) < 0) {
ga_error("audio source: setup failed.\n");
#ifdef WIN32
ga_wasapi_close(&audioparam);
#else
ga_alsa_close(audioparam.handle, audioparam.sndlog);
#endif
return -1;
}
initialized = true;
ga_error("audio source: setup chunk=%d, samplerate=%d, bps=%d, channels=%d\n",
audioparam.chunk_size,
audioparam.samplerate,
audioparam.bits_per_sample,
audioparam.channels);
return 0;
}
