356 lines
10 KiB
C++
356 lines
10 KiB
C++
//
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// ZoneMinder Remote Camera Class Implementation, $Date$, $Revision$
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// Copyright (C) 2001-2008 Philip Coombes
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License
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// as published by the Free Software Foundation; either version 2
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// of the License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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//
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#include "zm.h"
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#if HAVE_LIBAVFORMAT
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#include "zm_remote_camera_rtsp.h"
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#include "zm_ffmpeg.h"
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#include "zm_mem_utils.h"
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#include <sys/types.h>
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#include <sys/socket.h>
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RemoteCameraRtsp::RemoteCameraRtsp( int p_id, const std::string &p_method, const std::string &p_host, const std::string &p_port, const std::string &p_path, int p_width, int p_height, int p_colours, int p_brightness, int p_contrast, int p_hue, int p_colour, bool p_capture ) :
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RemoteCamera( p_id, "rtsp", p_host, p_port, p_path, p_width, p_height, p_colours, p_brightness, p_contrast, p_hue, p_colour, p_capture ),
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rtspThread( 0 )
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{
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if ( p_method == "rtpUni" )
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method = RtspThread::RTP_UNICAST;
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else if ( p_method == "rtpMulti" )
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method = RtspThread::RTP_MULTICAST;
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else if ( p_method == "rtpRtsp" )
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method = RtspThread::RTP_RTSP;
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else if ( p_method == "rtpRtspHttp" )
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method = RtspThread::RTP_RTSP_HTTP;
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else
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Fatal( "Unrecognised method '%s' when creating RTSP camera %d", p_method.c_str(), id );
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if ( capture )
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{
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Initialise();
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}
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mFormatContext = NULL;
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mVideoStreamId = -1;
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mCodecContext = NULL;
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mCodec = NULL;
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mRawFrame = NULL;
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mFrame = NULL;
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frameCount = 0;
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#if HAVE_LIBSWSCALE
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mConvertContext = NULL;
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#endif
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/* Has to be located inside the constructor so other components such as zma will receive correct colours and subpixel order */
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if(colours == ZM_COLOUR_RGB32) {
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subpixelorder = ZM_SUBPIX_ORDER_RGBA;
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imagePixFormat = PIX_FMT_RGBA;
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} else if(colours == ZM_COLOUR_RGB24) {
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subpixelorder = ZM_SUBPIX_ORDER_RGB;
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imagePixFormat = PIX_FMT_RGB24;
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} else if(colours == ZM_COLOUR_GRAY8) {
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subpixelorder = ZM_SUBPIX_ORDER_NONE;
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imagePixFormat = PIX_FMT_GRAY8;
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} else {
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Panic("Unexpected colours: %d",colours);
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}
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}
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RemoteCameraRtsp::~RemoteCameraRtsp()
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{
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av_freep( &mFrame );
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av_freep( &mRawFrame );
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#if HAVE_LIBSWSCALE
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if ( mConvertContext )
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{
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sws_freeContext( mConvertContext );
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mConvertContext = NULL;
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}
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#endif
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if ( mCodecContext )
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{
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avcodec_close( mCodecContext );
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mCodecContext = NULL; // Freed by avformat_free_context in the destructor of RtspThread class
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}
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if ( capture )
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{
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Terminate();
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}
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}
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void RemoteCameraRtsp::Initialise()
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{
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RemoteCamera::Initialise();
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int max_size = width*height*colours;
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buffer.size( max_size );
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if ( logDebugging() )
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av_log_set_level( AV_LOG_DEBUG );
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else
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av_log_set_level( AV_LOG_QUIET );
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av_register_all();
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Connect();
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}
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void RemoteCameraRtsp::Terminate()
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{
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Disconnect();
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}
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int RemoteCameraRtsp::Connect()
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{
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rtspThread = new RtspThread( id, method, protocol, host, port, path, auth );
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rtspThread->start();
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return( 0 );
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}
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int RemoteCameraRtsp::Disconnect()
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{
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if ( rtspThread )
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{
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rtspThread->stop();
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rtspThread->join();
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delete rtspThread;
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rtspThread = 0;
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}
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return( 0 );
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}
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int RemoteCameraRtsp::PrimeCapture()
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{
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Debug( 2, "Waiting for sources" );
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for ( int i = 0; i < 100 && !rtspThread->hasSources(); i++ )
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{
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usleep( 100000 );
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}
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if ( !rtspThread->hasSources() )
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Fatal( "No RTSP sources" );
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Debug( 2, "Got sources" );
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mFormatContext = rtspThread->getFormatContext();
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// Find first video stream present
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mVideoStreamId = -1;
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for ( unsigned int i = 0; i < mFormatContext->nb_streams; i++ )
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#if LIBAVUTIL_VERSION_INT >= AV_VERSION_INT(51,2,1)
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if ( mFormatContext->streams[i]->codec->codec_type == AVMEDIA_TYPE_VIDEO )
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#else
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if ( mFormatContext->streams[i]->codec->codec_type == CODEC_TYPE_VIDEO )
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#endif
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{
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mVideoStreamId = i;
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break;
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}
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if ( mVideoStreamId == -1 )
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Fatal( "Unable to locate video stream" );
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// Get a pointer to the codec context for the video stream
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mCodecContext = mFormatContext->streams[mVideoStreamId]->codec;
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// Find the decoder for the video stream
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mCodec = avcodec_find_decoder( mCodecContext->codec_id );
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if ( mCodec == NULL )
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Panic( "Unable to locate codec %d decoder", mCodecContext->codec_id );
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// Open codec
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#if LIBAVFORMAT_VERSION_INT < AV_VERSION_INT(53, 7, 0)
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if ( avcodec_open( mCodecContext, mCodec ) < 0 )
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#else
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if ( avcodec_open2( mCodecContext, mCodec, 0 ) < 0 )
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#endif
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Panic( "Can't open codec" );
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// Allocate space for the native video frame
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mRawFrame = avcodec_alloc_frame();
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// Allocate space for the converted video frame
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mFrame = avcodec_alloc_frame();
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if(mRawFrame == NULL || mFrame == NULL)
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Fatal( "Unable to allocate frame(s)");
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int pSize = avpicture_get_size( imagePixFormat, width, height );
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if( (unsigned int)pSize != imagesize) {
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Fatal("Image size mismatch. Required: %d Available: %d",pSize,imagesize);
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}
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/*
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#if HAVE_LIBSWSCALE
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if(!sws_isSupportedInput(mCodecContext->pix_fmt)) {
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Fatal("swscale does not support the codec format: %c%c%c%c",(mCodecContext->pix_fmt)&0xff,((mCodecContext->pix_fmt>>8)&0xff),((mCodecContext->pix_fmt>>16)&0xff),((mCodecContext->pix_fmt>>24)&0xff));
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}
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if(!sws_isSupportedOutput(imagePixFormat)) {
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Fatal("swscale does not support the target format: %c%c%c%c",(imagePixFormat)&0xff,((imagePixFormat>>8)&0xff),((imagePixFormat>>16)&0xff),((imagePixFormat>>24)&0xff));
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}
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#else // HAVE_LIBSWSCALE
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Fatal( "You must compile ffmpeg with the --enable-swscale option to use RTSP cameras" );
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#endif // HAVE_LIBSWSCALE
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*/
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return( 0 );
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}
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int RemoteCameraRtsp::PreCapture()
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{
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if ( !rtspThread->isRunning() )
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return( -1 );
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if ( !rtspThread->hasSources() )
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{
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Error( "Cannot precapture, no RTP sources" );
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return( -1 );
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}
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return( 0 );
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}
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int RemoteCameraRtsp::Capture( Image &image )
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{
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AVPacket packet;
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uint8_t* directbuffer;
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int frameComplete = false;
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/* Request a writeable buffer of the target image */
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directbuffer = image.WriteBuffer(width, height, colours, subpixelorder);
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if(directbuffer == NULL) {
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Error("Failed requesting writeable buffer for the captured image.");
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return (-1);
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}
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while ( true )
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{
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buffer.clear();
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if ( !rtspThread->isRunning() )
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return (-1);
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if ( rtspThread->getFrame( buffer ) )
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{
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Debug( 3, "Read frame %d bytes", buffer.size() );
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Debug( 4, "Address %p", buffer.head() );
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Hexdump( 4, buffer.head(), 16 );
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if ( !buffer.size() )
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return( -1 );
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if(mCodecContext->codec_id == AV_CODEC_ID_H264)
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{
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// SPS and PPS frames should be saved and appended to IDR frames
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int nalType = (buffer.head()[3] & 0x1f);
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// SPS
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if(nalType == 7)
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{
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lastSps = buffer;
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continue;
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}
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// PPS
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else if(nalType == 8)
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{
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lastPps = buffer;
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continue;
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}
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// IDR
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else if(nalType == 5)
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{
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buffer += lastSps;
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buffer += lastPps;
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}
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}
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av_init_packet( &packet );
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while ( !frameComplete && buffer.size() > 0 )
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{
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packet.data = buffer.head();
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packet.size = buffer.size();
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#if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(52, 25, 0)
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int len = avcodec_decode_video2( mCodecContext, mRawFrame, &frameComplete, &packet );
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#else
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int len = avcodec_decode_video( mCodecContext, mRawFrame, &frameComplete, packet.data, packet.size );
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#endif
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if ( len < 0 )
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{
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Error( "Error while decoding frame %d", frameCount );
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Hexdump( Logger::ERROR, buffer.head(), buffer.size()>256?256:buffer.size() );
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buffer.clear();
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continue;
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}
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Debug( 2, "Frame: %d - %d/%d", frameCount, len, buffer.size() );
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//if ( buffer.size() < 400 )
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//Hexdump( 0, buffer.head(), buffer.size() );
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buffer -= len;
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}
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if ( frameComplete ) {
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Debug( 3, "Got frame %d", frameCount );
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avpicture_fill( (AVPicture *)mFrame, directbuffer, imagePixFormat, width, height);
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#if HAVE_LIBSWSCALE
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if(mConvertContext == NULL) {
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if(config.cpu_extensions && sseversion >= 20) {
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mConvertContext = sws_getContext( mCodecContext->width, mCodecContext->height, mCodecContext->pix_fmt, width, height, imagePixFormat, SWS_BICUBIC | SWS_CPU_CAPS_SSE2, NULL, NULL, NULL );
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} else {
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mConvertContext = sws_getContext( mCodecContext->width, mCodecContext->height, mCodecContext->pix_fmt, width, height, imagePixFormat, SWS_BICUBIC, NULL, NULL, NULL );
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}
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if(mConvertContext == NULL)
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Fatal( "Unable to create conversion context");
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}
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if ( sws_scale( mConvertContext, mRawFrame->data, mRawFrame->linesize, 0, mCodecContext->height, mFrame->data, mFrame->linesize ) < 0 )
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Fatal( "Unable to convert raw format %u to target format %u at frame %d", mCodecContext->pix_fmt, imagePixFormat, frameCount );
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#else // HAVE_LIBSWSCALE
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Fatal( "You must compile ffmpeg with the --enable-swscale option to use RTSP cameras" );
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#endif // HAVE_LIBSWSCALE
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frameCount++;
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} /* frame complete */
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av_free_packet( &packet );
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} /* getFrame() */
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if(frameComplete)
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return (0);
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}
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return (0) ;
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}
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int RemoteCameraRtsp::PostCapture()
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{
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return( 0 );
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}
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#endif // HAVE_LIBAVFORMAT
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