diff --git a/src/zm_mpeg.cpp b/src/zm_mpeg.cpp index f45ece4ef..e5b4aa51f 100644 --- a/src/zm_mpeg.cpp +++ b/src/zm_mpeg.cpp @@ -25,8 +25,7 @@ #include "zm_mpeg.h" #if HAVE_LIBAVCODEC -extern "C" -{ +extern "C" { #include #include } @@ -40,12 +39,12 @@ VideoStream::MimeData VideoStream::mime_data[] = { { "mov", "video/quicktime" } }; -void VideoStream::Initialise( ) -{ - if ( logDebugging() ) - av_log_set_level( AV_LOG_DEBUG ); - else - av_log_set_level( AV_LOG_QUIET ); +void VideoStream::Initialise( ) { + if ( logDebugging() ) { + av_log_set_level( AV_LOG_DEBUG ); + } else { + av_log_set_level( AV_LOG_QUIET ); + } av_register_all( ); #if LIBAVFORMAT_VERSION_CHECK(53, 13, 0, 19, 0) @@ -54,16 +53,14 @@ void VideoStream::Initialise( ) initialised = true; } -void VideoStream::SetupFormat( ) -{ +void VideoStream::SetupFormat( ) { /* allocate the output media context */ ofc = NULL; #if (LIBAVFORMAT_VERSION_CHECK(53, 2, 0, 2, 0) && (LIBAVFORMAT_VERSION_MICRO >= 100)) avformat_alloc_output_context2( &ofc, NULL, format, filename ); #else AVFormatContext *s= avformat_alloc_context(); - if(!s) - { + if(!s) { Fatal( "avformat_alloc_context failed %d \"%s\"", (size_t)ofc, av_err2str((size_t)ofc) ); } @@ -91,8 +88,7 @@ void VideoStream::SetupFormat( ) if (s->oformat->priv_data_size > 0) { s->priv_data = av_mallocz(s->oformat->priv_data_size); - if (!s->priv_data) - { + if (!s->priv_data) { Fatal( "Could not allocate private data for output format." ); } #if LIBAVFORMAT_VERSION_CHECK(52, 92, 0, 92, 0) @@ -101,21 +97,17 @@ void VideoStream::SetupFormat( ) av_opt_set_defaults(s->priv_data); } #endif - } - else - { + } else { s->priv_data = NULL; } - if(filename) - { + if ( filename ) { snprintf( s->filename, sizeof(s->filename), "%s", filename ); } ofc = s; #endif - if ( !ofc ) - { + if ( !ofc ) { Fatal( "avformat_alloc_..._context failed: %d", ofc ); } @@ -123,8 +115,7 @@ void VideoStream::SetupFormat( ) Debug( 1, "Using output format: %s (%s)", of->name, of->long_name ); } -void VideoStream::SetupCodec( int colours, int subpixelorder, int width, int height, int bitrate, double frame_rate ) -{ +void VideoStream::SetupCodec( int colours, int subpixelorder, int width, int height, int bitrate, double frame_rate ) { /* ffmpeg format matching */ switch(colours) { case ZM_COLOUR_RGB24: @@ -163,45 +154,37 @@ void VideoStream::SetupCodec( int colours, int subpixelorder, int width, int hei break; } - if ( strcmp( "rtp", of->name ) == 0 ) - { + if ( strcmp( "rtp", of->name ) == 0 ) { // RTP must have a packet_size. // Not sure what this value should be really... ofc->packet_size = width*height; - if ( of->video_codec == AV_CODEC_ID_NONE) - { + if ( of->video_codec == AV_CODEC_ID_NONE ) { // RTP does not have a default codec in ffmpeg <= 0.8. of->video_codec = AV_CODEC_ID_MPEG4; } } _AVCODECID codec_id = of->video_codec; - if ( codec_name ) - { - AVCodec *a = avcodec_find_encoder_by_name(codec_name); - if ( a ) - { - codec_id = a->id; - } - else - { + if ( codec_name ) { + AVCodec *a = avcodec_find_encoder_by_name(codec_name); + if ( a ) { + codec_id = a->id; + } else { #if (LIBAVFORMAT_VERSION_CHECK(53, 8, 0, 11, 0) && (LIBAVFORMAT_VERSION_MICRO >= 100)) - Debug( 1, "Could not find codec \"%s\". Using default \"%s\"", codec_name, avcodec_get_name( codec_id ) ); + Debug( 1, "Could not find codec \"%s\". Using default \"%s\"", codec_name, avcodec_get_name( codec_id ) ); #else - Debug( 1, "Could not find codec \"%s\". Using default \"%d\"", codec_name, codec_id ); + Debug( 1, "Could not find codec \"%s\". Using default \"%d\"", codec_name, codec_id ); #endif - } + } } /* add the video streams using the default format codecs and initialize the codecs */ ost = NULL; - if ( codec_id != AV_CODEC_ID_NONE ) - { + if ( codec_id != AV_CODEC_ID_NONE ) { codec = avcodec_find_encoder( codec_id ); - if ( !codec ) - { + if ( !codec ) { #if (LIBAVFORMAT_VERSION_CHECK(53, 8, 0, 11, 0) && (LIBAVFORMAT_VERSION_MICRO >= 100)) Fatal( "Could not find encoder for '%s'", avcodec_get_name( codec_id ) ); #else @@ -221,8 +204,7 @@ void VideoStream::SetupCodec( int colours, int subpixelorder, int width, int hei ost = av_new_stream( ofc, 0 ); #endif - if ( !ost ) - { + if ( !ost ) { Fatal( "Could not alloc stream" ); } ost->id = ofc->nb_streams - 1; @@ -235,15 +217,12 @@ void VideoStream::SetupCodec( int colours, int subpixelorder, int width, int hei c->codec_type = codec->type; c->pix_fmt = strcmp( "mjpeg", ofc->oformat->name ) == 0 ? AV_PIX_FMT_YUVJ422P : AV_PIX_FMT_YUV420P; - if ( bitrate <= 100 ) - { + if ( bitrate <= 100 ) { // Quality based bitrate control (VBR). Scale is 1..31 where 1 is best. // This gets rid of artifacts in the beginning of the movie; and well, even quality. c->flags |= CODEC_FLAG_QSCALE; c->global_quality = FF_QP2LAMBDA * (31 - (31 * (bitrate / 100.0))); - } - else - { + } else { c->bit_rate = bitrate; } @@ -265,30 +244,23 @@ void VideoStream::SetupCodec( int colours, int subpixelorder, int width, int hei // some formats want stream headers to be separate if ( of->flags & AVFMT_GLOBALHEADER ) c->flags |= CODEC_FLAG_GLOBAL_HEADER; - } - else - { + } else { Fatal( "of->video_codec == AV_CODEC_ID_NONE" ); } } -void VideoStream::SetParameters( ) -{ +void VideoStream::SetParameters( ) { } -const char *VideoStream::MimeType( ) const -{ - for ( unsigned int i = 0; i < sizeof (mime_data) / sizeof (*mime_data); i++ ) - { - if ( strcmp( format, mime_data[i].format ) == 0 ) - { +const char *VideoStream::MimeType( ) const { + for ( unsigned int i = 0; i < sizeof (mime_data) / sizeof (*mime_data); i++ ) { + if ( strcmp( format, mime_data[i].format ) == 0 ) { Debug( 1, "MimeType is \"%s\"", mime_data[i].mime_type ); return ( mime_data[i].mime_type); } } const char *mime_type = of->mime_type; - if ( !mime_type ) - { + if ( !mime_type ) { std::string mime = "video/"; mime = mime.append( format ); mime_type = mime.c_str( ); @@ -300,14 +272,12 @@ const char *VideoStream::MimeType( ) const return ( mime_type); } -void VideoStream::OpenStream( ) -{ +void VideoStream::OpenStream( ) { int avRet; /* now that all the parameters are set, we can open the video codecs and allocate the necessary encode buffers */ - if ( ost ) - { + if ( ost ) { AVCodecContext *c = ost->codec; /* open the codec */ @@ -328,25 +298,22 @@ void VideoStream::OpenStream( ) #else opicture = avcodec_alloc_frame( ); #endif - if ( !opicture ) - { + if ( !opicture ) { Panic( "Could not allocate opicture" ); } #if LIBAVUTIL_VERSION_CHECK(54, 6, 0, 6, 0) - int size = av_image_get_buffer_size( c->pix_fmt, c->width, - c->height, 1 ); + int size = av_image_get_buffer_size( c->pix_fmt, c->width, c->height, 1 ); #else int size = avpicture_get_size( c->pix_fmt, c->width, c->height ); #endif uint8_t *opicture_buf = (uint8_t *)av_malloc( size ); - if ( !opicture_buf ) - { + if ( !opicture_buf ) { #if LIBAVCODEC_VERSION_CHECK(55, 28, 1, 45, 101) - av_frame_free( &opicture ); + av_frame_free( &opicture ); #else - av_freep( &opicture ); + av_freep( &opicture ); #endif Panic( "Could not allocate opicture_buf" ); } @@ -362,26 +329,22 @@ void VideoStream::OpenStream( ) picture is needed too. It is then converted to the required output format */ tmp_opicture = NULL; - if ( c->pix_fmt != pf ) - { + if ( c->pix_fmt != pf ) { #if LIBAVCODEC_VERSION_CHECK(55, 28, 1, 45, 101) tmp_opicture = av_frame_alloc( ); #else tmp_opicture = avcodec_alloc_frame( ); #endif - if ( !tmp_opicture ) - { + if ( !tmp_opicture ) { Panic( "Could not allocate tmp_opicture" ); } #if LIBAVUTIL_VERSION_CHECK(54, 6, 0, 6, 0) - int size = av_image_get_buffer_size( pf, c->width, - c->height,1 ); + int size = av_image_get_buffer_size( pf, c->width, c->height,1 ); #else int size = avpicture_get_size( pf, c->width, c->height ); #endif uint8_t *tmp_opicture_buf = (uint8_t *)av_malloc( size ); - if ( !tmp_opicture_buf ) - { + if ( !tmp_opicture_buf ) { #if LIBAVCODEC_VERSION_CHECK(55, 28, 1, 45, 101) av_frame_free( &tmp_opicture ); #else @@ -401,8 +364,7 @@ void VideoStream::OpenStream( ) } /* open the output file, if needed */ - if ( !(of->flags & AVFMT_NOFILE) ) - { + if ( !(of->flags & AVFMT_NOFILE) ) { int ret; #if LIBAVFORMAT_VERSION_CHECK(53, 15, 0, 21, 0) ret = avio_open2( &ofc->pb, filename, AVIO_FLAG_WRITE, NULL, NULL ); @@ -411,21 +373,17 @@ void VideoStream::OpenStream( ) #else ret = url_fopen( &ofc->pb, filename, AVIO_FLAG_WRITE ); #endif - if ( ret < 0 ) - { + if ( ret < 0 ) { Fatal( "Could not open '%s'", filename ); } Debug( 1, "Opened output \"%s\"", filename ); - } - else - { + } else { Fatal( "of->flags & AVFMT_NOFILE" ); } video_outbuf = NULL; - if ( !(of->flags & AVFMT_RAWPICTURE) ) - { + if ( !(of->flags & AVFMT_RAWPICTURE) ) { /* allocate output buffer */ /* XXX: API change will be done */ // TODO: Make buffer dynamic. @@ -448,8 +406,7 @@ void VideoStream::OpenStream( ) int ret = avformat_write_header( ofc, NULL ); #endif - if ( ret < 0 ) - { + if ( ret < 0 ) { Fatal( "?_write_header failed with error %d \"%s\"", ret, av_err2str( ret ) ); } } @@ -464,23 +421,20 @@ VideoStream::VideoStream( const char *in_filename, const char *in_format, int bi buffer_copy_lock(new pthread_mutex_t), buffer_copy_size(0), buffer_copy_used(0), - packet_index(0) + packet_index(0) { - if ( !initialised ) - { + if ( !initialised ) { Initialise( ); } - if ( format ) - { + if ( format ) { int length = strlen(format); codec_and_format = new char[length+1];; strcpy( codec_and_format, format ); format = codec_and_format; codec_name = NULL; char *f = strchr(codec_and_format, '/'); - if (f != NULL) - { + if (f != NULL) { *f = 0; codec_name = f+1; } @@ -490,26 +444,23 @@ VideoStream::VideoStream( const char *in_filename, const char *in_format, int bi SetupCodec( colours, subpixelorder, width, height, bitrate, frame_rate ); SetParameters( ); - // Allocate buffered packets. - packet_buffers = new AVPacket*[2]; - packet_buffers[0] = new AVPacket(); - packet_buffers[1] = new AVPacket(); - packet_index = 0; + // Allocate buffered packets. + packet_buffers = new AVPacket*[2]; + packet_buffers[0] = new AVPacket(); + packet_buffers[1] = new AVPacket(); + packet_index = 0; // Initialize mutex used by streaming thread. - if ( pthread_mutex_init( buffer_copy_lock, NULL ) != 0 ) - { + if ( pthread_mutex_init( buffer_copy_lock, NULL ) != 0 ) { Fatal("pthread_mutex_init failed"); } } -VideoStream::~VideoStream( ) -{ +VideoStream::~VideoStream( ) { Debug( 1, "VideoStream destructor." ); // Stop streaming thread. - if ( streaming_thread ) - { + if ( streaming_thread ) { do_streaming = false; void* thread_exit_code; @@ -519,29 +470,25 @@ VideoStream::~VideoStream( ) pthread_join(streaming_thread, &thread_exit_code); } - if ( buffer_copy != NULL ) - { + if ( buffer_copy != NULL ) { av_free( buffer_copy ); } - if ( buffer_copy_lock ) - { - if ( pthread_mutex_destroy( buffer_copy_lock ) != 0 ) - { + if ( buffer_copy_lock ) { + if ( pthread_mutex_destroy( buffer_copy_lock ) != 0 ) { Error( "pthread_mutex_destroy failed" ); } delete buffer_copy_lock; } - if (packet_buffers) { - delete packet_buffers[0]; - delete packet_buffers[1]; - delete[] packet_buffers; - } + if (packet_buffers) { + delete packet_buffers[0]; + delete packet_buffers[1]; + delete[] packet_buffers; + } /* close each codec */ - if ( ost ) - { + if ( ost ) { avcodec_close( ost->codec ); av_free( opicture->data[0] ); #if LIBAVCODEC_VERSION_CHECK(55, 28, 1, 45, 101) @@ -549,8 +496,7 @@ VideoStream::~VideoStream( ) #else av_freep( &opicture ); #endif - if ( tmp_opicture ) - { + if ( tmp_opicture ) { av_free( tmp_opicture->data[0] ); #if LIBAVCODEC_VERSION_CHECK(55, 28, 1, 45, 101) av_frame_free( &tmp_opicture ); @@ -565,13 +511,11 @@ VideoStream::~VideoStream( ) av_write_trailer( ofc ); /* free the streams */ - for ( unsigned int i = 0; i < ofc->nb_streams; i++ ) - { + for ( unsigned int i = 0; i < ofc->nb_streams; i++ ) { av_freep( &ofc->streams[i] ); } - if ( !(of->flags & AVFMT_NOFILE) ) - { + if ( !(of->flags & AVFMT_NOFILE) ) { /* close the output file */ #if LIBAVFORMAT_VERSION_CHECK(52, 105, 0, 105, 0) avio_close( ofc->pb ); @@ -584,30 +528,24 @@ VideoStream::~VideoStream( ) av_free( ofc ); /* free format and codec_name data. */ - if ( codec_and_format ) - { + if ( codec_and_format ) { delete codec_and_format; } } -double VideoStream::EncodeFrame( const uint8_t *buffer, int buffer_size, bool _add_timestamp, unsigned int _timestamp ) -{ - if ( pthread_mutex_lock( buffer_copy_lock ) != 0 ) - { +double VideoStream::EncodeFrame( const uint8_t *buffer, int buffer_size, bool _add_timestamp, unsigned int _timestamp ) { + if ( pthread_mutex_lock( buffer_copy_lock ) != 0 ) { Fatal( "EncodeFrame: pthread_mutex_lock failed." ); } - if (buffer_copy_size < buffer_size) - { - if ( buffer_copy ) - { + if (buffer_copy_size < buffer_size) { + if ( buffer_copy ) { av_free( buffer_copy ); } // Allocate a buffer to store source images for the streaming thread to encode. buffer_copy = (uint8_t *)av_malloc( buffer_size ); - if ( !buffer_copy ) - { + if ( !buffer_copy ) { Panic( "Could not allocate buffer_copy" ); } buffer_copy_size = buffer_size; @@ -618,13 +556,11 @@ double VideoStream::EncodeFrame( const uint8_t *buffer, int buffer_size, bool _a buffer_copy_used = buffer_size; memcpy(buffer_copy, buffer, buffer_size); - if ( pthread_mutex_unlock( buffer_copy_lock ) != 0 ) - { + if ( pthread_mutex_unlock( buffer_copy_lock ) != 0 ) { Fatal( "EncodeFrame: pthread_mutex_unlock failed." ); } - if ( streaming_thread == 0 ) - { + if ( streaming_thread == 0 ) { Debug( 1, "Starting streaming thread" ); // Start a thread for streaming encoded video. @@ -639,20 +575,17 @@ double VideoStream::EncodeFrame( const uint8_t *buffer, int buffer_size, bool _a return _timestamp; } -double VideoStream::ActuallyEncodeFrame( const uint8_t *buffer, int buffer_size, bool add_timestamp, unsigned int timestamp ) -{ +double VideoStream::ActuallyEncodeFrame( const uint8_t *buffer, int buffer_size, bool add_timestamp, unsigned int timestamp ) { #ifdef HAVE_LIBSWSCALE static struct SwsContext *img_convert_ctx = 0; #endif // HAVE_LIBSWSCALE AVCodecContext *c = ost->codec; - if ( c->pix_fmt != pf ) - { + if ( c->pix_fmt != pf ) { memcpy( tmp_opicture->data[0], buffer, buffer_size ); #ifdef HAVE_LIBSWSCALE - if ( !img_convert_ctx ) - { + if ( !img_convert_ctx ) { img_convert_ctx = sws_getCachedContext( NULL, c->width, c->height, pf, c->width, c->height, c->pix_fmt, SWS_BICUBIC, NULL, NULL, NULL ); if ( !img_convert_ctx ) Panic( "Unable to initialise image scaling context" ); @@ -661,18 +594,15 @@ double VideoStream::ActuallyEncodeFrame( const uint8_t *buffer, int buffer_size, #else // HAVE_LIBSWSCALE Fatal( "swscale is required for MPEG mode" ); #endif // HAVE_LIBSWSCALE - } - else - { + } else { memcpy( opicture->data[0], buffer, buffer_size ); } AVFrame *opicture_ptr = opicture; AVPacket *pkt = packet_buffers[packet_index]; av_init_packet( pkt ); - int got_packet = 0; - if ( of->flags & AVFMT_RAWPICTURE ) - { + int got_packet = 0; + if ( of->flags & AVFMT_RAWPICTURE ) { #if LIBAVCODEC_VERSION_CHECK(52, 30, 2, 30, 2) pkt->flags |= AV_PKT_FLAG_KEY; #else @@ -681,17 +611,14 @@ double VideoStream::ActuallyEncodeFrame( const uint8_t *buffer, int buffer_size, pkt->stream_index = ost->index; pkt->data = (uint8_t *)opicture_ptr; pkt->size = sizeof (AVPicture); - got_packet = 1; - } - else - { + got_packet = 1; + } else { opicture_ptr->pts = c->frame_number; opicture_ptr->quality = c->global_quality; #if LIBAVFORMAT_VERSION_CHECK(54, 1, 0, 2, 100) int ret = avcodec_encode_video2( c, pkt, opicture_ptr, &got_packet ); - if ( ret != 0 ) - { + if ( ret != 0 ) { Fatal( "avcodec_encode_video2 failed with errorcode %d \"%s\"", ret, av_err2str( ret ) ); } #else @@ -700,8 +627,7 @@ double VideoStream::ActuallyEncodeFrame( const uint8_t *buffer, int buffer_size, pkt->data = got_packet ? video_outbuf : NULL; pkt->size = got_packet ? out_size : 0; #endif - if ( got_packet ) - { + if ( got_packet ) { // if ( c->coded_frame->key_frame ) // { //#if LIBAVCODEC_VERSION_CHECK(52, 30, 2, 30, 2) @@ -711,12 +637,10 @@ double VideoStream::ActuallyEncodeFrame( const uint8_t *buffer, int buffer_size, //#endif // } - if ( pkt->pts != (int64_t)AV_NOPTS_VALUE ) - { + if ( pkt->pts != (int64_t)AV_NOPTS_VALUE ) { pkt->pts = av_rescale_q( pkt->pts, c->time_base, ost->time_base ); } - if ( pkt->dts != (int64_t)AV_NOPTS_VALUE ) - { + if ( pkt->dts != (int64_t)AV_NOPTS_VALUE ) { pkt->dts = av_rescale_q( pkt->dts, c->time_base, ost->time_base ); } pkt->duration = av_rescale_q( pkt->duration, c->time_base, ost->time_base ); @@ -730,14 +654,13 @@ double VideoStream::ActuallyEncodeFrame( const uint8_t *buffer, int buffer_size, int VideoStream::SendPacket(AVPacket *packet) { int ret = av_write_frame( ofc, packet ); - if ( ret != 0 ) - { + if ( ret != 0 ) { Fatal( "Error %d while writing video frame: %s", ret, av_err2str( errno ) ); } #if LIBAVCODEC_VERSION_CHECK(57, 8, 0, 12, 100) - av_packet_unref( packet ); + av_packet_unref( packet ); #else - av_free_packet( packet ); + av_free_packet( packet ); #endif return ret; } @@ -746,10 +669,10 @@ void *VideoStream::StreamingThreadCallback(void *ctx){ Debug( 1, "StreamingThreadCallback started" ); - if (ctx == NULL) return NULL; + if (ctx == NULL) return NULL; + + VideoStream* videoStream = reinterpret_cast(ctx); - VideoStream* videoStream = reinterpret_cast(ctx); - const uint64_t nanosecond_multiplier = 1000000000; uint64_t target_interval_ns = nanosecond_multiplier * ( ((double)videoStream->ost->codec->time_base.num) / (videoStream->ost->codec->time_base.den) ); @@ -757,50 +680,45 @@ void *VideoStream::StreamingThreadCallback(void *ctx){ timespec start_time; clock_gettime(CLOCK_MONOTONIC, &start_time); uint64_t start_time_ns = (start_time.tv_sec*nanosecond_multiplier) + start_time.tv_nsec; - while(videoStream->do_streaming) - { + while(videoStream->do_streaming) { timespec current_time; clock_gettime(CLOCK_MONOTONIC, ¤t_time); uint64_t current_time_ns = (current_time.tv_sec*nanosecond_multiplier) + current_time.tv_nsec; uint64_t target_ns = start_time_ns + (target_interval_ns * frame_count); - if ( current_time_ns < target_ns ) - { + if ( current_time_ns < target_ns ) { // It's not time to render a frame yet. usleep( (target_ns - current_time_ns) * 0.001 ); } - - // By sending the last rendered frame we deliver frames to the client more accurate. - // If we're encoding the frame before sending it there will be lag. - // Since this lag is not constant the client may skip frames. - - // Get the last rendered packet. - AVPacket *packet = videoStream->packet_buffers[videoStream->packet_index]; - if (packet->size) { - videoStream->SendPacket(packet); - } + + // By sending the last rendered frame we deliver frames to the client more accurate. + // If we're encoding the frame before sending it there will be lag. + // Since this lag is not constant the client may skip frames. + + // Get the last rendered packet. + AVPacket *packet = videoStream->packet_buffers[videoStream->packet_index]; + if (packet->size) { + videoStream->SendPacket(packet); + } #if LIBAVCODEC_VERSION_CHECK(57, 8, 0, 12, 100) - av_packet_unref( packet); + av_packet_unref( packet); #else - av_free_packet( packet ); + av_free_packet( packet ); #endif - videoStream->packet_index = videoStream->packet_index ? 0 : 1; + videoStream->packet_index = videoStream->packet_index ? 0 : 1; + + // Lock buffer and render next frame. - // Lock buffer and render next frame. - - if ( pthread_mutex_lock( videoStream->buffer_copy_lock ) != 0 ) - { + if ( pthread_mutex_lock( videoStream->buffer_copy_lock ) != 0 ) { Fatal( "StreamingThreadCallback: pthread_mutex_lock failed." ); } - if ( videoStream->buffer_copy ) - { + if ( videoStream->buffer_copy ) { // Encode next frame. videoStream->ActuallyEncodeFrame( videoStream->buffer_copy, videoStream->buffer_copy_used, videoStream->add_timestamp, videoStream->timestamp ); } - if ( pthread_mutex_unlock( videoStream->buffer_copy_lock ) != 0 ) - { + if ( pthread_mutex_unlock( videoStream->buffer_copy_lock ) != 0 ) { Fatal( "StreamingThreadCallback: pthread_mutex_unlock failed." ); }