586 lines
20 KiB
C++
Executable File
586 lines
20 KiB
C++
Executable File
//
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// ZoneMinder Ffmpeg Camera Class Implementation, $Date: 2009-01-16 12:18:50 +0000 (Fri, 16 Jan 2009) $, $Revision: 2713 $
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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_ffmpeg_camera.h"
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extern "C"{
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#include "libavutil/time.h"
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}
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#ifndef AV_ERROR_MAX_STRING_SIZE
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#define AV_ERROR_MAX_STRING_SIZE 64
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#endif
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FfmpegCamera::FfmpegCamera( int p_id, const std::string &p_path, const std::string &p_method, const std::string &p_options, 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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Camera( p_id, FFMPEG_SRC, p_width, p_height, p_colours, ZM_SUBPIX_ORDER_DEFAULT_FOR_COLOUR(p_colours), p_brightness, p_contrast, p_hue, p_colour, p_capture ),
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mPath( p_path ),
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mMethod( p_method ),
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mOptions( p_options )
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{
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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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mAudioStreamId = -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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startTime=0;
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mIsOpening = false;
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mCanCapture = false;
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mOpenStart = 0;
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mReopenThread = 0;
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wasRecording = false;
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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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FfmpegCamera::~FfmpegCamera()
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{
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CloseFfmpeg();
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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 FfmpegCamera::Initialise()
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{
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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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}
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void FfmpegCamera::Terminate()
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{
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}
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int FfmpegCamera::PrimeCapture()
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{
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mVideoStreamId = -1;
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mAudioStreamId = -1;
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Info( "Priming capture from %s", mPath.c_str() );
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if (OpenFfmpeg() != 0){
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ReopenFfmpeg();
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}
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return 0;
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}
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int FfmpegCamera::PreCapture()
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{
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// Nothing to do here
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return( 0 );
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}
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int FfmpegCamera::Capture( Image &image )
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{
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if (!mCanCapture){
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return -1;
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}
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// If the reopen thread has a value, but mCanCapture != 0, then we have just reopened the connection to the ffmpeg device, and we can clean up the thread.
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if (mReopenThread != 0) {
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void *retval = 0;
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int ret;
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ret = pthread_tryjoin_np(mReopenThread, &retval);
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if (ret != 0){
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Error("Could not join reopen thread.");
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}
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Info( "Successfully reopened stream." );
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mReopenThread = 0;
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}
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AVPacket packet;
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uint8_t* directbuffer;
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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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int frameComplete = false;
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while ( !frameComplete )
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{
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int avResult = av_read_frame( mFormatContext, &packet );
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if ( avResult < 0 )
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{
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char errbuf[AV_ERROR_MAX_STRING_SIZE];
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av_strerror(avResult, errbuf, AV_ERROR_MAX_STRING_SIZE);
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if (
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// Check if EOF.
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(avResult == AVERROR_EOF || (mFormatContext->pb && mFormatContext->pb->eof_reached)) ||
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// Check for Connection failure.
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(avResult == -110)
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)
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{
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Info( "av_read_frame returned \"%s\". Reopening stream.", errbuf);
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ReopenFfmpeg();
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}
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Error( "Unable to read packet from stream %d: error %d \"%s\".", packet.stream_index, avResult, errbuf );
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return( -1 );
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}
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Debug( 5, "Got packet from stream %d", packet.stream_index );
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if ( packet.stream_index == mVideoStreamId )
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{
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#if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(52, 25, 0)
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if ( avcodec_decode_video2( mCodecContext, mRawFrame, &frameComplete, &packet ) < 0 )
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#else
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if ( avcodec_decode_video( mCodecContext, mRawFrame, &frameComplete, packet.data, packet.size ) < 0 )
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#endif
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Fatal( "Unable to decode frame at frame %d", frameCount );
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Debug( 4, "Decoded video packet at frame %d", frameCount );
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if ( frameComplete )
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{
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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 for %s", mPath.c_str() );
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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 ffmpeg cameras" );
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#endif // HAVE_LIBSWSCALE
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frameCount++;
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}
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}
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av_free_packet( &packet );
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}
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return (0);
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}
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int FfmpegCamera::PostCapture()
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{
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// Nothing to do here
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return( 0 );
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}
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int FfmpegCamera::OpenFfmpeg() {
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Debug ( 2, "OpenFfmpeg called." );
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mOpenStart = time(NULL);
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mIsOpening = true;
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// Open the input, not necessarily a file
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#if LIBAVFORMAT_VERSION_INT < AV_VERSION_INT(53, 4, 0)
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Debug ( 1, "Calling av_open_input_file" );
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if ( av_open_input_file( &mFormatContext, mPath.c_str(), NULL, 0, NULL ) !=0 )
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#else
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// Handle options
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AVDictionary *opts = 0;
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StringVector opVect = split(Options(), ",");
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// Set transport method as specified by method field, rtpUni is default
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if ( Method() == "rtpMulti" )
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opVect.push_back("rtsp_transport=udp_multicast");
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else if ( Method() == "rtpRtsp" )
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opVect.push_back("rtsp_transport=tcp");
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else if ( Method() == "rtpRtspHttp" )
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opVect.push_back("rtsp_transport=http");
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Debug(2, "Number of Options: %d",opVect.size());
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for (size_t i=0; i<opVect.size(); i++)
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{
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StringVector parts = split(opVect[i],"=");
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if (parts.size() > 1) {
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parts[0] = trimSpaces(parts[0]);
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parts[1] = trimSpaces(parts[1]);
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if ( av_dict_set(&opts, parts[0].c_str(), parts[1].c_str(), 0) == 0 ) {
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Debug(2, "set option %d '%s' to '%s'", i, parts[0].c_str(), parts[1].c_str());
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}
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else
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{
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Warning( "Error trying to set option %d '%s' to '%s'", i, parts[0].c_str(), parts[1].c_str() );
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}
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}
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}
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Debug ( 1, "Calling avformat_open_input" );
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mFormatContext = avformat_alloc_context( );
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mFormatContext->interrupt_callback.callback = FfmpegInterruptCallback;
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mFormatContext->interrupt_callback.opaque = this;
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if ( avformat_open_input( &mFormatContext, mPath.c_str(), NULL, &opts ) !=0 )
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#endif
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{
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mIsOpening = false;
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Error( "Unable to open input %s due to: %s", mPath.c_str(), strerror(errno) );
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return -1;
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}
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mIsOpening = false;
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Debug ( 1, "Opened input" );
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Info( "Stream open %s", mPath.c_str() );
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startTime=av_gettime();//FIXME here or after find_Stream_info
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//FIXME can speed up initial analysis but need sensible parameters...
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//mFormatContext->probesize = 32;
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//mFormatContext->max_analyze_duration = 32;
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// Locate stream info from avformat_open_input
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#if LIBAVFORMAT_VERSION_INT < AV_VERSION_INT(53, 4, 0)
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Debug ( 1, "Calling av_find_stream_info" );
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if ( av_find_stream_info( mFormatContext ) < 0 )
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#else
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Debug ( 1, "Calling avformat_find_stream_info" );
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if ( avformat_find_stream_info( mFormatContext, 0 ) < 0 )
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#endif
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Fatal( "Unable to find stream info from %s due to: %s", mPath.c_str(), strerror(errno) );
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Info( "Find stream info complete %s", mPath.c_str() );
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Debug ( 1, "Got stream info" );
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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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{
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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(mAudioStreamId == -1) //FIXME best way to copy all other streams?
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{
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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_AUDIO )
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#else
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if ( mFormatContext->streams[i]->codec->codec_type == CODEC_TYPE_AUDIO )
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#endif
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{
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mAudioStreamId = i;
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}
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}
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}
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if ( mVideoStreamId == -1 )
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Fatal( "Unable to locate video stream in %s", mPath.c_str() );
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Debug ( 1, "Found video stream" );
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mCodecContext = mFormatContext->streams[mVideoStreamId]->codec;
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// Try and get the codec from the codec context
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if ( (mCodec = avcodec_find_decoder( mCodecContext->codec_id )) == NULL )
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Fatal( "Can't find codec for video stream from %s", mPath.c_str() );
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Debug ( 1, "Found decoder" );
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// Open the codec
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#if LIBAVFORMAT_VERSION_INT < AV_VERSION_INT(53, 7, 0)
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Debug ( 1, "Calling avcodec_open" );
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if ( avcodec_open( mCodecContext, mCodec ) < 0 )
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#else
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Debug ( 1, "Calling avcodec_open2" );
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if ( avcodec_open2( mCodecContext, mCodec, 0 ) < 0 )
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#endif
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Fatal( "Unable to open codec for video stream from %s", mPath.c_str() );
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Debug ( 1, "Opened 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 for %s", mPath.c_str() );
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Debug ( 1, "Allocated frames" );
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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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Debug ( 1, "Validated imagesize" );
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#if HAVE_LIBSWSCALE
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Debug ( 1, "Calling sws_isSupportedInput" );
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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 ffmpeg cameras" );
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#endif // HAVE_LIBSWSCALE
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Info( "Primed capture from %s, video=%d, audio=%d", mPath.c_str(), mVideoStreamId, mAudioStreamId);
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mCanCapture = true;
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return( 0 );
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}
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int FfmpegCamera::ReopenFfmpeg() {
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Debug(2, "ReopenFfmpeg called.");
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mCanCapture = false;
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if (pthread_create( &mReopenThread, NULL, ReopenFfmpegThreadCallback, (void*) this) != 0){
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// Log a fatal error and exit the process.
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Fatal( "ReopenFfmpeg failed to create worker thread." );
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}
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return 0;
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}
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int FfmpegCamera::CloseFfmpeg(){
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Debug(2, "CloseFfmpeg called.");
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mCanCapture = false;
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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 av_close_input_file
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}
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if ( mFormatContext )
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{
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#if LIBAVFORMAT_VERSION_INT < AV_VERSION_INT(53, 4, 0)
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av_close_input_file( mFormatContext );
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#else
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avformat_close_input( &mFormatContext );
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#endif
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mFormatContext = NULL;
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}
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return 0;
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}
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int FfmpegCamera::FfmpegInterruptCallback(void *ctx)
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{
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FfmpegCamera* camera = reinterpret_cast<FfmpegCamera*>(ctx);
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if (camera->mIsOpening){
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int now = time(NULL);
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if ((now - camera->mOpenStart) > config.ffmpeg_open_timeout) {
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Error ( "Open video took more than %d seconds.", config.ffmpeg_open_timeout );
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return 1;
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}
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}
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return 0;
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}
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void *FfmpegCamera::ReopenFfmpegThreadCallback(void *ctx){
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if (ctx == NULL) return NULL;
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FfmpegCamera* camera = reinterpret_cast<FfmpegCamera*>(ctx);
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while (1){
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// Close current stream.
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camera->CloseFfmpeg();
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// Sleep if neccessary to not reconnect too fast.
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int wait = config.ffmpeg_open_timeout - (time(NULL) - camera->mOpenStart);
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wait = wait < 0 ? 0 : wait;
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if (wait > 0){
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Debug( 1, "Sleeping %d seconds before reopening stream.", wait );
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sleep(wait);
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}
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if (camera->OpenFfmpeg() == 0){
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return NULL;
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}
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}
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}
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//Function to handle capture and store
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int FfmpegCamera::CaptureAndRecord( Image &image, bool recording, char* event_directory )
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{
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AVPacket packet;
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uint8_t* directbuffer;
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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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int frameComplete = false;
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while ( !frameComplete )
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{
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int avResult = av_read_frame( mFormatContext, &packet );
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if ( avResult < 0 )
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{
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Error( "Unable to read packet from stream %d: error %d", packet.stream_index, avResult );
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return( -1 );//FIXME do we need to free packet
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}
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Debug( 5, "Got packet from stream %d", packet.stream_index );
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if ( packet.stream_index == mVideoStreamId )
|
|
{
|
|
if ( avcodec_decode_video2( mCodecContext, mRawFrame, &frameComplete, &packet ) < 0 )
|
|
Fatal( "Unable to decode frame at frame %d", frameCount );
|
|
|
|
Debug( 4, "Decoded video packet at frame %d", frameCount );
|
|
|
|
if ( frameComplete )
|
|
{
|
|
Debug( 3, "Got frame %d", frameCount );
|
|
|
|
avpicture_fill( (AVPicture *)mFrame, directbuffer, imagePixFormat, width, height);
|
|
|
|
//Keep the last keyframe so we can establish immediate video
|
|
/*if(packet.flags & AV_PKT_FLAG_KEY)
|
|
av_copy_packet(&lastKeyframePkt, &packet);*/
|
|
//TODO I think we need to store the key frame location for seeking as part of the event
|
|
|
|
//Video recording
|
|
if(recording && !wasRecording){
|
|
//Instanciate the video storage module
|
|
char fileName[4096];
|
|
snprintf(fileName, sizeof(fileName), "%s/event.mp4", event_directory);//no audio support for mp4?...ffmpeg is choking when writing the header probably some unsupported audio options for the stream doesn't like it when called from shell either using ffmpeg binary
|
|
videoStore = new VideoStore((const char *)fileName, "mp4", mFormatContext->streams[mVideoStreamId],mAudioStreamId==-1?NULL:mFormatContext->streams[mAudioStreamId],startTime);
|
|
wasRecording = true;
|
|
strcpy(oldDirectory, event_directory);
|
|
|
|
}else if(!recording && wasRecording && videoStore){
|
|
Warning("Deleting videoStore instance");
|
|
delete videoStore;
|
|
videoStore = NULL;
|
|
}
|
|
|
|
//The directory we are recording to is no longer tied to the current event. Need to re-init the videostore with the correct directory and start recording again
|
|
if(recording && wasRecording && (strcmp(oldDirectory, event_directory)!=0) && (packet.flags & AV_PKT_FLAG_KEY) ){ //don't open new vs until we're on a key frame..would this require an offset adjustment for the event as a result?...if we store our key frame location with the even will that be enough?
|
|
Info("Re-starting video storage module");
|
|
if(videoStore){
|
|
delete videoStore;
|
|
videoStore = NULL;
|
|
}
|
|
char fileName[4096];
|
|
snprintf(fileName, sizeof(fileName), "%s/event.mp4", event_directory);//no audio support for mp4?
|
|
videoStore = new VideoStore((const char *)fileName, "mp4", mFormatContext->streams[mVideoStreamId],mAudioStreamId==-1?NULL:mFormatContext->streams[mAudioStreamId],startTime);
|
|
strcpy(oldDirectory, event_directory);
|
|
}
|
|
|
|
if(videoStore && recording){
|
|
//Write the packet to our video store
|
|
int ret = videoStore->writeVideoFramePacket(&packet, mFormatContext->streams[mVideoStreamId]);//, &lastKeyframePkt);
|
|
if(ret<0){//Less than zero and we skipped a frame
|
|
av_free_packet( &packet );
|
|
return 0;//FIXME av_free_packet not called
|
|
}
|
|
}
|
|
|
|
#if HAVE_LIBSWSCALE
|
|
if(mConvertContext == NULL) {
|
|
if(config.cpu_extensions && sseversion >= 20) {
|
|
mConvertContext = sws_getContext( mCodecContext->width, mCodecContext->height, mCodecContext->pix_fmt, width, height, imagePixFormat, SWS_BICUBIC | SWS_CPU_CAPS_SSE2, NULL, NULL, NULL );
|
|
} else {
|
|
mConvertContext = sws_getContext( mCodecContext->width, mCodecContext->height, mCodecContext->pix_fmt, width, height, imagePixFormat, SWS_BICUBIC, NULL, NULL, NULL );
|
|
}
|
|
if(mConvertContext == NULL)
|
|
Fatal( "Unable to create conversion context for %s", mPath.c_str() );
|
|
}
|
|
|
|
if ( sws_scale( mConvertContext, mRawFrame->data, mRawFrame->linesize, 0, mCodecContext->height, mFrame->data, mFrame->linesize ) < 0 )
|
|
Fatal( "Unable to convert raw format %u to target format %u at frame %d", mCodecContext->pix_fmt, imagePixFormat, frameCount );
|
|
#else // HAVE_LIBSWSCALE
|
|
Fatal( "You must compile ffmpeg with the --enable-swscale option to use ffmpeg cameras" );
|
|
#endif // HAVE_LIBSWSCALE
|
|
|
|
frameCount++;
|
|
}
|
|
}else if(packet.stream_index == mAudioStreamId){//FIXME best way to copy all other streams
|
|
if(videoStore && recording){
|
|
//Write the packet to our video store
|
|
int ret = videoStore->writeAudioFramePacket(&packet, mFormatContext->streams[packet.stream_index]); //FIXME no relevance of last key frame
|
|
/*if(ret<0){//Less than zero and we skipped a frame
|
|
av_free_packet( &packet );
|
|
return 0; //FIXME av_free_packet not called
|
|
}*/
|
|
}
|
|
}
|
|
av_free_packet( &packet );
|
|
}
|
|
return (frameCount);
|
|
}
|
|
|
|
|
|
#endif // HAVE_LIBAVFORMAT
|