zoneminder/src/zm_camera.cpp

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//
// ZoneMinder Camera Class Implementation, $Date$, $Revision$
// Copyright (C) 2001-2008 Philip Coombes
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; either version 2
// of the License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
//
#include "zm_camera.h"
#include "zm_monitor.h"
Camera::Camera(
const Monitor *monitor,
SourceType p_type,
unsigned int p_width,
unsigned int p_height,
int p_colours,
int p_subpixelorder,
int p_brightness,
int p_contrast,
int p_hue,
int p_colour,
bool p_capture,
bool p_record_audio
) :
monitor(monitor),
type(p_type),
width(p_width),
height(p_height),
colours(p_colours),
subpixelorder(p_subpixelorder),
brightness(p_brightness),
hue(p_hue),
colour(p_colour),
contrast(p_contrast),
capture(p_capture),
record_audio(p_record_audio),
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mVideoStreamId(-1),
mAudioStreamId(-1),
mVideoCodecContext(nullptr),
mAudioCodecContext(nullptr),
mVideoStream(nullptr),
mAudioStream(nullptr),
mFormatContext(nullptr),
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mSecondFormatContext(nullptr),
bytes(0)
{
linesize = width * colours;
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pixels = width * height;
imagesize = height * linesize;
Debug(2, "New camera id: %d width: %d line size: %d height: %d colours: %d subpixelorder: %d capture: %d",
monitor->Id(), width, linesize, height, colours, subpixelorder, capture);
}
Camera::~Camera() {
if ( mFormatContext ) {
// Should also free streams
avformat_free_context(mFormatContext);
}
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if ( mSecondFormatContext ) {
// Should also free streams
avformat_free_context(mSecondFormatContext);
}
mVideoStream = nullptr;
mAudioStream = nullptr;
}
AVStream *Camera::get_VideoStream() {
if ( !mVideoStream ) {
if ( !mFormatContext )
mFormatContext = avformat_alloc_context();
Debug(1, "Allocating avstream");
mVideoStream = avformat_new_stream(mFormatContext, nullptr);
if ( mVideoStream ) {
mVideoStream->time_base = (AVRational){1, 1000000}; // microseconds as base frame rate
#if LIBAVCODEC_VERSION_CHECK(57, 64, 0, 64, 0)
mVideoStream->codecpar->width = width;
mVideoStream->codecpar->height = height;
mVideoStream->codecpar->format = GetFFMPEGPixelFormat(colours, subpixelorder);
mVideoStream->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
mVideoStream->codecpar->codec_id = AV_CODEC_ID_NONE;
Debug(1, "Allocating avstream %p %p %d", mVideoStream, mVideoStream->codecpar, mVideoStream->codecpar->codec_id);
#else
mVideoStream->codec->width = width;
mVideoStream->codec->height = height;
mVideoStream->codec->pix_fmt = GetFFMPEGPixelFormat(colours, subpixelorder);
mVideoStream->codec->codec_type = AVMEDIA_TYPE_VIDEO;
mVideoStream->codec->codec_id = AV_CODEC_ID_NONE;
#endif
} else {
Error("Can't create video stream");
}
mVideoStreamId = mVideoStream->index;
}
return mVideoStream;
}