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_width(i), video_source_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
return 0;
}
static int
rtp_new_av_stream(RTSPContext *ctx, struct sockaddr_in *sin, int streamid, enum AVCodecID codecid) {
AVOutputFormat *fmt = NULL;
AVFormatContext *fmtctx = NULL;
AVStream *stream = NULL;
AVCodecContext *encoder = NULL;
uint8_t *dummybuf = NULL;
//
if(streamid > VIDEO_SOURCE_CHANNEL_MAX) {
ga_error("invalid stream index (%d > %d)\n",
streamid, VIDEO_SOURCE_CHANNEL_MAX);
return -1;
}
if(codecid != rtspconf->video_encoder_codec->id
&& codecid != rtspconf->audio_encoder_codec->id) {
ga_error("invalid codec (%d)\n", codecid);
return -1;
}
if(ctx->fmtctx[streamid] != NULL) {
ga_error("duplicated setup to an existing stream (%d)\n",
streamid);
return -1;
}
if((fmt = av_guess_format("rtp", NULL, NULL)) == NULL) {
ga_error("RTP not supported.\n");
return -1;
}
if((fmtctx = avformat_alloc_context()) == NULL) {
ga_error("create avformat context failed.\n");
return -1;
}
fmtctx->oformat = fmt;
if(ctx->mtu > 0) {
if(fmtctx->packet_size > 0) {
fmtctx->packet_size =
ctx->mtu < fmtctx->packet_size ? ctx->mtu : fmtctx->packet_size;
} else {
fmtctx->packet_size = ctx->mtu;
}
ga_error("RTP: packet size set to %d (configured: %d)\n",
fmtctx->packet_size, ctx->mtu);
}
#ifdef HOLE_PUNCHING
if(ffio_open_dyn_packet_buf(&fmtctx->pb, ctx->mtu) < 0) {
ga_error("cannot open dynamic packet buffer\n");
return -1;
}
ga_error("RTP: Dynamic buffer opened, max_packet_size=%d.\n",
(int) fmtctx->pb->max_packet_size);
if(ctx->lower_transport[streamid] == RTSP_LOWER_TRANSPORT_UDP) {
if(rtp_open_ports(ctx, streamid) < 0) {
ga_error("RTP: open ports failed - %s\n", strerror(errno));
return -1;
}
}
#else
if(ctx->lower_transport[streamid] == RTSP_LOWER_TRANSPORT_UDP) {
snprintf(fmtctx->filename, sizeof(fmtctx->filename),
"rtp://%s:%d", inet_ntoa(sin->sin_addr), ntohs(sin->sin_port));
if(avio_open(&fmtctx->pb, fmtctx->filename, AVIO_FLAG_WRITE) < 0) {
ga_error("cannot open URL: %s\n", fmtctx->filename);
return -1;
}
ga_error("RTP/UDP: URL opened [%d]: %s, max_packet_size=%d\n",
streamid, fmtctx->filename, fmtctx->pb->max_packet_size);
} else if(ctx->lower_transport[streamid] == RTSP_LOWER_TRANSPORT_TCP) {
// XXX: should we use avio_open_dyn_buf(&fmtctx->pb)?
if(ffio_open_dyn_packet_buf(&fmtctx->pb, ctx->mtu) < 0) {
ga_error("cannot open dynamic packet buffer\n");
return -1;
}
ga_error("RTP/TCP: Dynamic buffer opened, max_packet_size=%d.\n",
(int) fmtctx->pb->max_packet_size);
}
#endif
fmtctx->pb->seekable = 0;
//
if((stream = ga_avformat_new_stream(fmtctx, 0,
codecid == rtspconf->video_encoder_codec->id ?
rtspconf->video_encoder_codec : rtspconf->audio_encoder_codec)) == NULL) {
ga_error("Cannot create new stream (%d)\n", codecid);
return -1;
}
//
if(codecid == rtspconf->video_encoder_codec->id) {
encoder = ga_avcodec_vencoder_init(
stream->codec,
rtspconf->video_encoder_codec,
video_source_out_width(streamid),
video_source_out_height(streamid),
rtspconf->video_fps,
rtspconf->vso);
} else if(codecid == rtspconf->audio_encoder_codec->id) {
encoder = ga_avcodec_aencoder_init(
stream->codec,
rtspconf->audio_encoder_codec,
rtspconf->audio_bitrate,
rtspconf->audio_samplerate,
rtspconf->audio_channels,
rtspconf->audio_codec_format,
rtspconf->audio_codec_channel_layout);
}
if(encoder == NULL) {
ga_error("Cannot init encoder\n");
return -1;
}
//
ctx->encoder[streamid] = encoder;
ctx->stream[streamid] = stream;
ctx->fmtctx[streamid] = fmtctx;
// write header
if(avformat_write_header(ctx->fmtctx[streamid], NULL) < 0) {
ga_error("Cannot write stream id %d.\n", streamid);
return -1;
}
#ifdef HOLE_PUNCHING
avio_close_dyn_buf(ctx->fmtctx[streamid]->pb, &dummybuf);
av_free(dummybuf);
#else
if(ctx->lower_transport[streamid] == RTSP_LOWER_TRANSPORT_TCP) {
/*int rlen;
rlen =*/ avio_close_dyn_buf(ctx->fmtctx[streamid]->pb, &dummybuf);
av_free(dummybuf);
}
#endif
return 0;
}
void *
vencoder_threadproc(void *arg) {
// arg is pointer to source pipe
// image info
int iid;
int iwidth;
int iheight;
int rtp_id;
struct pooldata *data = NULL;
struct vsource_frame *frame = NULL;
pipeline *pipe = (pipeline*) arg;
AVCodecContext *encoder = NULL;
//
AVFrame *pic_in = NULL;
unsigned char *pic_in_buf = NULL;
int pic_in_size;
unsigned char *nalbuf = NULL, *nalbuf_a = NULL;
int nalbuf_size = 0, nalign = 0;
long long basePts = -1LL, newpts = 0LL, pts = -1LL, ptsSync = 0LL;
pthread_mutex_t condMutex = PTHREAD_MUTEX_INITIALIZER;
pthread_cond_t cond = PTHREAD_COND_INITIALIZER;
//
int resolution[2];
int video_written = 0;
//
if(pipe == NULL) {
ga_error("video encoder: NULL pipeline specified.\n");
goto video_quit;
}
//
rtspconf = rtspconf_global();
// init variables
iid = ((struct vsource_config*) pipe->get_privdata())->id;
iwidth = video_source_maxwidth(iid);
iheight = video_source_maxheight(iid);
rtp_id = ((struct vsource_config*) pipe->get_privdata())->rtp_id;
//
outputW = iwidth; // by default, the same as max resolution
outputH = iheight;
if(ga_conf_readints("output-resolution", resolution, 2) == 2) {
outputW = resolution[0];
outputH = resolution[1];
}
//
ga_error("video encoder: image source from '%s' (%dx%d) via channel %d, resolution=%dx%d.\n",
pipe->name(), iwidth, iheight, rtp_id, outputW, outputH);
//
encoder = ga_avcodec_vencoder_init(
NULL,
rtspconf->video_encoder_codec,
outputW, outputH,
rtspconf->video_fps,
rtspconf->vso);
if(encoder == NULL) {
ga_error("video encoder: cannot initialized the encoder.\n");
goto video_quit;
}
//
nalbuf_size = 100000+12 * outputW * outputH;
if(ga_malloc(nalbuf_size, (void**) &nalbuf, &nalign) < 0) {
ga_error("video encoder: buffer allocation failed, terminated.\n");
goto video_quit;
}
nalbuf_a = nalbuf + nalign;
//
if((pic_in = avcodec_alloc_frame()) == NULL) {
ga_error("video encoder: picture allocation failed, terminated.\n");
goto video_quit;
}
pic_in_size = avpicture_get_size(PIX_FMT_YUV420P, outputW, outputH);
if((pic_in_buf = (unsigned char*) av_malloc(pic_in_size)) == NULL) {
ga_error("video encoder: picture buffer allocation failed, terminated.\n");
goto video_quit;
}
avpicture_fill((AVPicture*) pic_in, pic_in_buf,
PIX_FMT_YUV420P, outputW, outputH);
//ga_error("video encoder: linesize = %d|%d|%d\n", pic_in->linesize[0], pic_in->linesize[1], pic_in->linesize[2]);
// start encoding
ga_error("video encoding started: tid=%ld %dx%d@%dfps, nalbuf_size=%d, pic_in_size=%d.\n",
ga_gettid(),
iwidth, iheight, rtspconf->video_fps,
nalbuf_size, pic_in_size);
//
pipe->client_register(ga_gettid(), &cond);
//
while(encoder_running() > 0) {
AVPacket pkt;
int got_packet = 0;
// wait for notification
data = pipe->load_data();
if(data == NULL) {
int err;
struct timeval tv;
struct timespec to;
gettimeofday(&tv, NULL);
to.tv_sec = tv.tv_sec+1;
to.tv_nsec = tv.tv_usec * 1000;
//
if((err = pipe->timedwait(&cond, &condMutex, &to)) != 0) {
ga_error("viedo encoder: image source timed out.\n");
continue;
}
data = pipe->load_data();
if(data == NULL) {
ga_error("viedo encoder: unexpected NULL frame received (from '%s', data=%d, buf=%d).\n",
pipe->name(), pipe->data_count(), pipe->buf_count());
continue;
}
}
frame = (struct vsource_frame*) data->ptr;
// handle pts
if(basePts == -1LL) {
basePts = frame->imgpts;
ptsSync = encoder_pts_sync(rtspconf->video_fps);
newpts = ptsSync;
} else {
newpts = ptsSync + frame->imgpts - basePts;
}
// XXX: assume always YUV420P
if(pic_in->linesize[0] == frame->linesize[0]
&& pic_in->linesize[1] == frame->linesize[1]
&& pic_in->linesize[2] == frame->linesize[2]) {
bcopy(frame->imgbuf, pic_in_buf, pic_in_size);
} else {
ga_error("video encoder: YUV mode failed - mismatched linesize(s) (src:%d,%d,%d; dst:%d,%d,%d)\n",
frame->linesize[0], frame->linesize[1], frame->linesize[2],
pic_in->linesize[0], pic_in->linesize[1], pic_in->linesize[2]);
pipe->release_data(data);
goto video_quit;
}
pipe->release_data(data);
// pts must be monotonically increasing
if(newpts > pts) {
pts = newpts;
} else {
pts++;
}
// encode
pic_in->pts = pts;
av_init_packet(&pkt);
pkt.data = nalbuf_a;
pkt.size = nalbuf_size;
if(avcodec_encode_video2(encoder, &pkt, pic_in, &got_packet) < 0) {
ga_error("video encoder: encode failed, terminated.\n");
goto video_quit;
}
if(got_packet) {
if(pkt.pts == (int64_t) AV_NOPTS_VALUE) {
pkt.pts = pts;
}
pkt.stream_index = 0;
// send the packet
if(encoder_send_packet_all("video-encoder",
rtp_id/*rtspconf->video_id*/, &pkt,
pkt.pts) < 0) {
goto video_quit;
}
// free unused side-data
if(pkt.side_data_elems > 0) {
int i;
for (i = 0; i < pkt.side_data_elems; i++)
av_free(pkt.side_data[i].data);
av_freep(&pkt.side_data);
pkt.side_data_elems = 0;
}
//
if(video_written == 0) {
video_written = 1;
ga_error("first video frame written (pts=%lld)\n", pts);
}
}
}
//
video_quit:
if(pipe) {
pipe->client_unregister(ga_gettid());
pipe = NULL;
}
//
if(pic_in_buf) av_free(pic_in_buf);
if(pic_in) av_free(pic_in);
if(nalbuf) free(nalbuf);
if(encoder) ga_avcodec_close(encoder);
//
ga_error("video encoder: thread terminated (tid=%ld).\n", ga_gettid());
//
return NULL;
}
static int
vencoder_init(void *arg) {
int iid;
char *pipefmt = (char*) arg;
struct RTSPConf *rtspconf = rtspconf_global();
//
if(rtspconf == NULL) {
ga_error("video encoder: no configuration found\n");
return -1;
}
if(vencoder_initialized != 0)
return 0;
//
for(iid = 0; iid < video_source_channels(); iid++) {
char pipename[64];
int outputW, outputH;
pipeline *pipe;
//
_sps[iid] = _pps[iid] = NULL;
_spslen[iid] = _ppslen[iid] = 0;
snprintf(pipename, sizeof(pipename), pipefmt, iid);
outputW = video_source_out_width(iid);
outputH = video_source_out_height(iid);
if((pipe = pipeline::lookup(pipename)) == NULL) {
ga_error("video encoder: pipe %s is not found\n", pipename);
goto init_failed;
}
ga_error("video encoder: video source #%d from '%s' (%dx%d).\n",
iid, pipe->name(), outputW, outputH, iid);
vencoder[iid] = ga_avcodec_vencoder_init(NULL,
rtspconf->video_encoder_codec,
outputW, outputH,
rtspconf->video_fps, rtspconf->vso);
if(vencoder[iid] == NULL)
goto init_failed;
#ifdef STANDALONE_SDP
// encoders for SDP generation
switch(rtspconf->video_encoder_codec->id) {
case AV_CODEC_ID_H264:
case AV_CODEC_ID_H265:
case AV_CODEC_ID_CAVS:
case AV_CODEC_ID_MPEG4:
// need ctx with CODEC_FLAG_GLOBAL_HEADER flag
avc = avcodec_alloc_context3(rtspconf->video_encoder_codec);
if(avc == NULL)
goto init_failed;
avc->flags |= CODEC_FLAG_GLOBAL_HEADER;
avc = ga_avcodec_vencoder_init(avc,
rtspconf->video_encoder_codec,
outputW, outputH,
rtspconf->video_fps, rtspconf->vso);
if(avc == NULL)
goto init_failed;
ga_error("video encoder: meta-encoder #%d created.\n", iid);
break;
default:
// do nothing
break;
}
vencoder_sdp[iid] = avc;
#endif
}
vencoder_initialized = 1;
ga_error("video encoder: initialized.\n");
return 0;
init_failed:
vencoder_deinit(NULL);
return -1;
}
