1205 lines
38 KiB
C++
1205 lines
38 KiB
C++
//
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// ZoneMinder Ffmpeg Camera Class Implementation
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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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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//
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#include "zm.h"
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#include "zm_signal.h"
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#include "zm_utils.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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#if HAVE_LIBAVUTIL_HWCONTEXT_H
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#include "libavutil/hwcontext.h"
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#endif
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#include "libavutil/pixdesc.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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#include <string>
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#if HAVE_LIBAVUTIL_HWCONTEXT_H
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#if LIBAVCODEC_VERSION_CHECK(57, 89, 0, 89, 0)
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static enum AVPixelFormat hw_pix_fmt;
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static enum AVPixelFormat get_hw_format(
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AVCodecContext *ctx,
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const enum AVPixelFormat *pix_fmts
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) {
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const enum AVPixelFormat *p;
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for ( p = pix_fmts; *p != -1; p++ ) {
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if ( *p == hw_pix_fmt )
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return *p;
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}
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Error("Failed to get HW surface format for %s.",
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av_get_pix_fmt_name(hw_pix_fmt));
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for ( p = pix_fmts; *p != -1; p++ )
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Error("Available HW surface format was %s.",
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av_get_pix_fmt_name(*p));
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return AV_PIX_FMT_NONE;
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}
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#if !LIBAVUTIL_VERSION_CHECK(56, 22, 0, 14, 0)
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static enum AVPixelFormat find_fmt_by_hw_type(const enum AVHWDeviceType type) {
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enum AVPixelFormat fmt;
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switch (type) {
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case AV_HWDEVICE_TYPE_VAAPI:
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fmt = AV_PIX_FMT_VAAPI;
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break;
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case AV_HWDEVICE_TYPE_DXVA2:
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fmt = AV_PIX_FMT_DXVA2_VLD;
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break;
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case AV_HWDEVICE_TYPE_D3D11VA:
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fmt = AV_PIX_FMT_D3D11;
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break;
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case AV_HWDEVICE_TYPE_VDPAU:
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fmt = AV_PIX_FMT_VDPAU;
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break;
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case AV_HWDEVICE_TYPE_CUDA:
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fmt = AV_PIX_FMT_CUDA;
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break;
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case AV_HWDEVICE_TYPE_VIDEOTOOLBOX:
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fmt = AV_PIX_FMT_VIDEOTOOLBOX;
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break;
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default:
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fmt = AV_PIX_FMT_NONE;
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break;
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}
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return fmt;
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}
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#endif
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#endif
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#endif
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FfmpegCamera::FfmpegCamera(
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int p_id,
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const std::string &p_path,
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const std::string &p_method,
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const std::string &p_options,
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int p_width,
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int p_height,
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int p_colours,
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int p_brightness,
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int p_contrast,
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int p_hue,
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int p_colour,
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bool p_capture,
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bool p_record_audio,
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const std::string &p_hwaccel_name,
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const std::string &p_hwaccel_device) :
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Camera(
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p_id,
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FFMPEG_SRC,
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p_width,
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p_height,
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p_colours,
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ZM_SUBPIX_ORDER_DEFAULT_FOR_COLOUR(p_colours),
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p_brightness,
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p_contrast,
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p_hue,
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p_colour,
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p_capture,
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p_record_audio
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),
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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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hwaccel_name(p_hwaccel_name),
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hwaccel_device(p_hwaccel_device)
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{
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if ( capture ) {
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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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mVideoCodecContext = NULL;
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mAudioCodecContext = NULL;
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mVideoCodec = NULL;
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mAudioCodec = NULL;
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mRawFrame = NULL;
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mFrame = NULL;
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frameCount = 0;
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mCanCapture = false;
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videoStore = NULL;
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have_video_keyframe = false;
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packetqueue = NULL;
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error_count = 0;
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use_hwaccel = true;
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#if HAVE_LIBAVUTIL_HWCONTEXT_H
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hwFrame = NULL;
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hw_device_ctx = NULL;
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#if LIBAVCODEC_VERSION_CHECK(57, 89, 0, 89, 0)
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hw_pix_fmt = AV_PIX_FMT_NONE;
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#endif
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#endif
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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
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* 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 = AV_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 = AV_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 = AV_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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frame_buffer = NULL;
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// sws_scale needs 32bit aligned width and an extra 16 bytes padding, so recalculate imagesize, which was width*height*bytes_per_pixel
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#if LIBAVUTIL_VERSION_CHECK(54, 6, 0, 6, 0)
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alignment = 32;
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imagesize = av_image_get_buffer_size(imagePixFormat, width, height, alignment);
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// av_image_get_linesize isn't aligned, so we have to do that.
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linesize = FFALIGN(av_image_get_linesize(imagePixFormat, width, 0), alignment);
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#else
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alignment = 1;
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linesize = FFALIGN(av_image_get_linesize(imagePixFormat, width, 0), alignment);
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imagesize = avpicture_get_size(imagePixFormat, width, height);
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#endif
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if ( linesize != width * colours ) {
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Debug(1, "linesize %d != width %d * colours %d = %d, allocating frame_buffer", linesize, width, colours, width*colours);
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frame_buffer = (uint8_t *)av_malloc(imagesize);
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}
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Debug(1, "ffmpegcamera: width %d height %d linesize %d colours %d image linesize %d imagesize %d",
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width, height, linesize, colours, width*colours, imagesize);
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} // FfmpegCamera::FfmpegCamera
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FfmpegCamera::~FfmpegCamera() {
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Close();
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if ( capture ) {
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Terminate();
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}
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FFMPEGDeInit();
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}
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void FfmpegCamera::Initialise() {
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FFMPEGInit();
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}
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void FfmpegCamera::Terminate() {
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}
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int FfmpegCamera::PrimeCapture() {
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if ( mCanCapture ) {
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Debug(1, "Priming capture from %s, Closing", mPath.c_str());
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Close();
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}
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mVideoStreamId = -1;
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mAudioStreamId = -1;
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Debug(1, "Priming capture from %s", mPath.c_str());
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return OpenFfmpeg();
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}
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int FfmpegCamera::PreCapture() {
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// If Reopen was called, then ffmpeg is closed and we need to reopen it.
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if ( !mCanCapture )
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return OpenFfmpeg();
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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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if ( !mCanCapture ) {
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return -1;
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}
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int ret;
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// If the reopen thread has a value, but mCanCapture != 0, then we have just
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// reopened the connection to the device, and we can clean up the thread.
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int frameComplete = false;
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while ( !frameComplete && !zm_terminate ) {
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ret = av_read_frame(mFormatContext, &packet);
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if ( ret < 0 ) {
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if (
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// Check if EOF.
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(
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ret == AVERROR_EOF
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||
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(mFormatContext->pb && mFormatContext->pb->eof_reached)
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) ||
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// Check for Connection failure.
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(ret == -110)
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) {
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Info("Unable to read packet from stream %d: error %d \"%s\".",
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packet.stream_index, ret, av_make_error_string(ret).c_str());
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} else {
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Error("Unable to read packet from stream %d: error %d \"%s\".",
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packet.stream_index, ret, av_make_error_string(ret).c_str());
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}
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return -1;
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}
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bytes += packet.size;
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int keyframe = packet.flags & AV_PKT_FLAG_KEY;
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if ( keyframe )
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have_video_keyframe = true;
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Debug(5, "Got packet from stream %d dts (%d) pts(%d)",
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packet.stream_index, packet.pts, packet.dts);
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// What about audio stream? Maybe someday we could do sound detection...
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if (
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(packet.stream_index == mVideoStreamId)
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&&
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(keyframe || have_video_keyframe)
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) {
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ret = zm_send_packet_receive_frame(mVideoCodecContext, mRawFrame, packet);
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if ( ret < 0 ) {
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if ( AVERROR(EAGAIN) != ret ) {
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Warning("Unable to receive frame %d: code %d %s. error count is %d",
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frameCount, ret, av_make_error_string(ret).c_str(), error_count);
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error_count += 1;
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if ( error_count > 100 ) {
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Error("Error count over 100, going to close and re-open stream");
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return -1;
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}
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}
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zm_av_packet_unref(&packet);
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continue;
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}
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frameComplete = 1;
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zm_dump_video_frame(mRawFrame, "raw frame from decoder");
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#if HAVE_LIBAVUTIL_HWCONTEXT_H
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#if LIBAVCODEC_VERSION_CHECK(57, 89, 0, 89, 0)
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if (
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(hw_pix_fmt != AV_PIX_FMT_NONE)
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&&
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(mRawFrame->format == hw_pix_fmt)
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) {
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/* retrieve data from GPU to CPU */
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ret = av_hwframe_transfer_data(hwFrame, mRawFrame, 0);
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if ( ret < 0 ) {
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Error("Unable to transfer frame at frame %d: %s, continuing",
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frameCount, av_make_error_string(ret).c_str());
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zm_av_packet_unref(&packet);
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continue;
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}
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zm_dump_video_frame(hwFrame, "After hwtransfer");
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hwFrame->pts = mRawFrame->pts;
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input_frame = hwFrame;
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} else {
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#endif
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#endif
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input_frame = mRawFrame;
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#if HAVE_LIBAVUTIL_HWCONTEXT_H
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#if LIBAVCODEC_VERSION_CHECK(57, 89, 0, 89, 0)
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}
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#endif
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#endif
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if ( transfer_to_image(image, mFrame, input_frame) < 0 ) {
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zm_av_packet_unref(&packet);
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return -1;
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}
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frameCount++;
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} else {
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Debug(4, "Different stream_index %d", packet.stream_index);
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} // end if packet.stream_index == mVideoStreamId
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zm_av_packet_unref(&packet);
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} // end while ! frameComplete
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return frameComplete ? 1 : 0;
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} // FfmpegCamera::Capture
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int FfmpegCamera::PostCapture() {
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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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int ret;
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have_video_keyframe = false;
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error_count = 0;
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// Open the input, not necessarily a file
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#if !LIBAVFORMAT_VERSION_CHECK(53, 2, 0, 4, 0)
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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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ret = av_dict_parse_string(&opts, Options().c_str(), "=", ",", 0);
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if ( ret < 0 ) {
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Warning("Could not parse ffmpeg input options '%s'", Options().c_str());
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}
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// Set transport method as specified by method field, rtpUni is default
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std::string protocol = mPath.substr(0, 4);
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string_toupper(protocol);
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if ( protocol == "RTSP" ) {
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const std::string method = Method();
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if ( method == "rtpMulti" ) {
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ret = av_dict_set(&opts, "rtsp_transport", "udp_multicast", 0);
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} else if ( method == "rtpRtsp" ) {
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ret = av_dict_set(&opts, "rtsp_transport", "tcp", 0);
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} else if ( method == "rtpRtspHttp" ) {
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ret = av_dict_set(&opts, "rtsp_transport", "http", 0);
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} else if ( method == "rtpUni" ) {
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ret = av_dict_set(&opts, "rtsp_transport", "udp", 0);
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} else {
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Warning("Unknown method (%s)", method.c_str());
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}
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if ( ret < 0 ) {
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Warning("Could not set rtsp_transport method '%s'", method.c_str());
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}
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} // end if RTSP
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// #av_dict_set(&opts, "timeout", "10000000", 0); // in microseconds.
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Debug(1, "Calling avformat_open_input for %s", mPath.c_str());
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mFormatContext = avformat_alloc_context();
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// Speed up 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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mFormatContext->interrupt_callback.callback = FfmpegInterruptCallback;
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mFormatContext->interrupt_callback.opaque = this;
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ret = avformat_open_input(&mFormatContext, mPath.c_str(), NULL, &opts);
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if ( ret != 0 )
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#endif
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{
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Error("Unable to open input %s due to: %s", mPath.c_str(),
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av_make_error_string(ret).c_str());
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#if !LIBAVFORMAT_VERSION_CHECK(53, 17, 0, 25, 0)
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av_close_input_file(mFormatContext);
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#else
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if ( mFormatContext ) {
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avformat_close_input(&mFormatContext);
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mFormatContext = NULL;
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}
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#endif
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av_dict_free(&opts);
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return -1;
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}
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AVDictionaryEntry *e = NULL;
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while ( (e = av_dict_get(opts, "", e, AV_DICT_IGNORE_SUFFIX)) != NULL ) {
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Warning("Option %s not recognized by ffmpeg", e->key);
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}
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av_dict_free(&opts);
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#if !LIBAVFORMAT_VERSION_CHECK(53, 6, 0, 6, 0)
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ret = av_find_stream_info(mFormatContext);
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#else
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ret = avformat_find_stream_info(mFormatContext, 0);
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#endif
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if ( ret < 0 ) {
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Error("Unable to find stream info from %s due to: %s",
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mPath.c_str(), av_make_error_string(ret).c_str());
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return -1;
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}
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// Find first video stream present
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// The one we want Might not be the first
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mVideoStreamId = -1;
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mAudioStreamId = -1;
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for ( unsigned int i=0; i < mFormatContext->nb_streams; i++ ) {
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AVStream *stream = mFormatContext->streams[i];
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if ( is_video_stream(stream) ) {
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if ( mVideoStreamId == -1 ) {
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mVideoStreamId = i;
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// if we break, then we won't find the audio stream
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continue;
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} else {
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Debug(2, "Have another video stream.");
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}
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} else if ( is_audio_stream(stream) ) {
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if ( mAudioStreamId == -1 ) {
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mAudioStreamId = i;
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} else {
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Debug(2, "Have another audio stream.");
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}
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}
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} // end foreach stream
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if ( mVideoStreamId == -1 ) {
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Error("Unable to locate video stream in %s", mPath.c_str());
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return -1;
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}
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Debug(3, "Found video stream at index %d, audio stream at index %d",
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mVideoStreamId, mAudioStreamId);
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packetqueue = new zm_packetqueue(
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(mVideoStreamId > mAudioStreamId) ? mVideoStreamId : mAudioStreamId);
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#if LIBAVCODEC_VERSION_CHECK(57, 64, 0, 64, 0)
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// mVideoCodecContext = avcodec_alloc_context3(NULL);
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// avcodec_parameters_to_context(mVideoCodecContext,
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// mFormatContext->streams[mVideoStreamId]->codecpar);
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// this isn't copied.
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// mVideoCodecContext->time_base =
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// mFormatContext->streams[mVideoStreamId]->codec->time_base;
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#else
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#endif
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mVideoCodecContext = mFormatContext->streams[mVideoStreamId]->codec;
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#ifdef CODEC_FLAG2_FAST
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mVideoCodecContext->flags2 |= CODEC_FLAG2_FAST | CODEC_FLAG_LOW_DELAY;
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#endif
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if ( mVideoCodecContext->codec_id == AV_CODEC_ID_H264 ) {
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if ( (mVideoCodec = avcodec_find_decoder_by_name("h264_mmal")) == NULL ) {
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Debug(1, "Failed to find decoder (h264_mmal)");
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} else {
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Debug(1, "Success finding decoder (h264_mmal)");
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}
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}
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if ( !mVideoCodec ) {
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mVideoCodec = avcodec_find_decoder(mVideoCodecContext->codec_id);
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if ( !mVideoCodec ) {
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// Try and get the codec from the codec context
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Error("Can't find codec for video stream from %s", mPath.c_str());
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return -1;
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}
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}
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zm_dump_stream_format(mFormatContext, mVideoStreamId, 0, 0);
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if ( use_hwaccel && (hwaccel_name != "") ) {
|
|
#if HAVE_LIBAVUTIL_HWCONTEXT_H
|
|
// 3.2 doesn't seem to have all the bits in place, so let's require 3.3 and up
|
|
#if LIBAVCODEC_VERSION_CHECK(57, 89, 0, 89, 0)
|
|
// Print out available types
|
|
enum AVHWDeviceType type = AV_HWDEVICE_TYPE_NONE;
|
|
while ( (type = av_hwdevice_iterate_types(type)) != AV_HWDEVICE_TYPE_NONE )
|
|
Debug(1, "%s", av_hwdevice_get_type_name(type));
|
|
|
|
const char *hw_name = hwaccel_name.c_str();
|
|
type = av_hwdevice_find_type_by_name(hw_name);
|
|
if ( type == AV_HWDEVICE_TYPE_NONE ) {
|
|
Debug(1, "Device type %s is not supported.", hw_name);
|
|
} else {
|
|
Debug(1, "Found hwdevice %s", av_hwdevice_get_type_name(type));
|
|
}
|
|
|
|
#if LIBAVUTIL_VERSION_CHECK(56, 22, 0, 14, 0)
|
|
// Get hw_pix_fmt
|
|
for ( int i = 0;; i++ ) {
|
|
const AVCodecHWConfig *config = avcodec_get_hw_config(mVideoCodec, i);
|
|
if ( !config ) {
|
|
Debug(1, "Decoder %s does not support device type %s.",
|
|
mVideoCodec->name, av_hwdevice_get_type_name(type));
|
|
break;
|
|
}
|
|
if ( (config->methods & AV_CODEC_HW_CONFIG_METHOD_HW_DEVICE_CTX)
|
|
&& (config->device_type == type)
|
|
) {
|
|
hw_pix_fmt = config->pix_fmt;
|
|
break;
|
|
} else {
|
|
Debug(1, "decoder %s hwConfig doesn't match our type: %s != %s, pix_fmt %s.",
|
|
mVideoCodec->name,
|
|
av_hwdevice_get_type_name(type),
|
|
av_hwdevice_get_type_name(config->device_type),
|
|
av_get_pix_fmt_name(config->pix_fmt)
|
|
);
|
|
}
|
|
} // end foreach hwconfig
|
|
#else
|
|
hw_pix_fmt = find_fmt_by_hw_type(type);
|
|
#endif
|
|
if ( hw_pix_fmt != AV_PIX_FMT_NONE ) {
|
|
Debug(1, "Selected hw_pix_fmt %d %s",
|
|
hw_pix_fmt, av_get_pix_fmt_name(hw_pix_fmt));
|
|
|
|
ret = av_hwdevice_ctx_create(&hw_device_ctx, type,
|
|
(hwaccel_device != "" ? hwaccel_device.c_str(): NULL), NULL, 0);
|
|
if ( ret < 0 ) {
|
|
Error("Failed to create hwaccel device. %s",av_make_error_string(ret).c_str());
|
|
hw_pix_fmt = AV_PIX_FMT_NONE;
|
|
} else {
|
|
Debug(1, "Created hwdevice for %s", hwaccel_device.c_str());
|
|
mVideoCodecContext->get_format = get_hw_format;
|
|
mVideoCodecContext->hw_device_ctx = av_buffer_ref(hw_device_ctx);
|
|
hwFrame = zm_av_frame_alloc();
|
|
}
|
|
} else {
|
|
Debug(1, "Failed to find suitable hw_pix_fmt.");
|
|
}
|
|
#else
|
|
Debug(1, "AVCodec not new enough for hwaccel");
|
|
#endif
|
|
#else
|
|
Warning("HWAccel support not compiled in.");
|
|
#endif
|
|
} // end if hwaccel_name
|
|
|
|
// Open the codec
|
|
#if !LIBAVFORMAT_VERSION_CHECK(53, 8, 0, 8, 0)
|
|
ret = avcodec_open(mVideoCodecContext, mVideoCodec);
|
|
#else
|
|
ret = avcodec_open2(mVideoCodecContext, mVideoCodec, &opts);
|
|
#endif
|
|
e = NULL;
|
|
while ( (e = av_dict_get(opts, "", e, AV_DICT_IGNORE_SUFFIX)) != NULL ) {
|
|
Warning("Option %s not recognized by ffmpeg", e->key);
|
|
}
|
|
if ( ret < 0 ) {
|
|
Error("Unable to open codec for video stream from %s", mPath.c_str());
|
|
av_dict_free(&opts);
|
|
return -1;
|
|
}
|
|
zm_dump_codec(mVideoCodecContext);
|
|
|
|
Debug(1, hwFrame ? "HWACCEL in use" : "HWACCEL not in use");
|
|
|
|
if ( mAudioStreamId >= 0 ) {
|
|
if ( (mAudioCodec = avcodec_find_decoder(
|
|
#if LIBAVCODEC_VERSION_CHECK(57, 64, 0, 64, 0)
|
|
mFormatContext->streams[mAudioStreamId]->codecpar->codec_id
|
|
#else
|
|
mFormatContext->streams[mAudioStreamId]->codec->codec_id
|
|
#endif
|
|
)) == NULL ) {
|
|
Debug(1, "Can't find codec for audio stream from %s", mPath.c_str());
|
|
} else {
|
|
#if LIBAVCODEC_VERSION_CHECK(57, 64, 0, 64, 0)
|
|
mAudioCodecContext = avcodec_alloc_context3(mAudioCodec);
|
|
avcodec_parameters_to_context(
|
|
mAudioCodecContext,
|
|
mFormatContext->streams[mAudioStreamId]->codecpar
|
|
);
|
|
#else
|
|
mAudioCodecContext = mFormatContext->streams[mAudioStreamId]->codec;
|
|
// = avcodec_alloc_context3(mAudioCodec);
|
|
#endif
|
|
|
|
zm_dump_stream_format(mFormatContext, mAudioStreamId, 0, 0);
|
|
// Open the codec
|
|
#if !LIBAVFORMAT_VERSION_CHECK(53, 8, 0, 8, 0)
|
|
if ( avcodec_open(mAudioCodecContext, mAudioCodec) < 0 ) {
|
|
#else
|
|
if ( avcodec_open2(mAudioCodecContext, mAudioCodec, 0) < 0 ) {
|
|
#endif
|
|
Error("Unable to open codec for audio stream from %s", mPath.c_str());
|
|
return -1;
|
|
}
|
|
zm_dump_codec(mAudioCodecContext);
|
|
} // end if find decoder
|
|
} // end if have audio_context
|
|
|
|
// Allocate space for the native video frame
|
|
mRawFrame = zm_av_frame_alloc();
|
|
|
|
// Allocate space for the converted video frame
|
|
mFrame = zm_av_frame_alloc();
|
|
|
|
if ( mRawFrame == NULL || mFrame == NULL ) {
|
|
Error("Unable to allocate frame for %s", mPath.c_str());
|
|
return -1;
|
|
}
|
|
mFrame->width = width;
|
|
mFrame->height = height;
|
|
|
|
|
|
#if HAVE_LIBSWSCALE
|
|
if ( !sws_isSupportedInput(mVideoCodecContext->pix_fmt) ) {
|
|
Error("swscale does not support the codec format for input: %s",
|
|
av_get_pix_fmt_name(mVideoCodecContext->pix_fmt)
|
|
);
|
|
return -1;
|
|
}
|
|
|
|
if ( !sws_isSupportedOutput(imagePixFormat) ) {
|
|
Error("swscale does not support the target format: %s",
|
|
av_get_pix_fmt_name(imagePixFormat)
|
|
);
|
|
return -1;
|
|
}
|
|
|
|
#else // HAVE_LIBSWSCALE
|
|
Fatal("You must compile ffmpeg with the --enable-swscale "
|
|
"option to use ffmpeg cameras");
|
|
#endif // HAVE_LIBSWSCALE
|
|
|
|
if (
|
|
((unsigned int)mVideoCodecContext->width != width)
|
|
||
|
|
((unsigned int)mVideoCodecContext->height != height)
|
|
) {
|
|
Warning("Monitor dimensions are %dx%d but camera is sending %dx%d",
|
|
width, height, mVideoCodecContext->width, mVideoCodecContext->height);
|
|
}
|
|
|
|
mCanCapture = true;
|
|
|
|
return 0;
|
|
} // int FfmpegCamera::OpenFfmpeg()
|
|
|
|
int FfmpegCamera::Close() {
|
|
Debug(2, "CloseFfmpeg called.");
|
|
|
|
mCanCapture = false;
|
|
|
|
if ( mFrame ) {
|
|
av_frame_free(&mFrame);
|
|
mFrame = NULL;
|
|
}
|
|
if ( mRawFrame ) {
|
|
av_frame_free(&mRawFrame);
|
|
mRawFrame = NULL;
|
|
}
|
|
#if HAVE_LIBAVUTIL_HWCONTEXT_H
|
|
if ( hwFrame ) {
|
|
av_frame_free(&hwFrame);
|
|
hwFrame = NULL;
|
|
}
|
|
#endif
|
|
|
|
#if HAVE_LIBSWSCALE
|
|
if ( mConvertContext ) {
|
|
sws_freeContext(mConvertContext);
|
|
mConvertContext = NULL;
|
|
}
|
|
#endif
|
|
|
|
if ( videoStore ) {
|
|
delete videoStore;
|
|
videoStore = NULL;
|
|
}
|
|
|
|
if ( mVideoCodecContext ) {
|
|
avcodec_close(mVideoCodecContext);
|
|
#if LIBAVCODEC_VERSION_CHECK(57, 64, 0, 64, 0)
|
|
// avcodec_free_context(&mVideoCodecContext);
|
|
#endif
|
|
mVideoCodecContext = NULL; // Freed by av_close_input_file
|
|
}
|
|
if ( mAudioCodecContext ) {
|
|
avcodec_close(mAudioCodecContext);
|
|
#if LIBAVCODEC_VERSION_CHECK(57, 64, 0, 64, 0)
|
|
avcodec_free_context(&mAudioCodecContext);
|
|
#endif
|
|
mAudioCodecContext = NULL; // Freed by av_close_input_file
|
|
}
|
|
|
|
#if HAVE_LIBAVUTIL_HWCONTEXT_H
|
|
if ( hw_device_ctx ) {
|
|
av_buffer_unref(&hw_device_ctx);
|
|
}
|
|
#endif
|
|
|
|
if ( mFormatContext ) {
|
|
#if !LIBAVFORMAT_VERSION_CHECK(53, 17, 0, 25, 0)
|
|
av_close_input_file(mFormatContext);
|
|
#else
|
|
avformat_close_input(&mFormatContext);
|
|
#endif
|
|
mFormatContext = NULL;
|
|
}
|
|
|
|
if ( packetqueue ) {
|
|
delete packetqueue;
|
|
packetqueue = NULL;
|
|
}
|
|
|
|
return 0;
|
|
} // end FfmpegCamera::Close
|
|
|
|
// Function to handle capture and store
|
|
int FfmpegCamera::CaptureAndRecord(
|
|
Image &image,
|
|
timeval recording,
|
|
char* event_file
|
|
) {
|
|
if ( !mCanCapture ) {
|
|
return -1;
|
|
}
|
|
int ret;
|
|
|
|
struct timeval video_buffer_duration = monitor->GetVideoBufferDuration();
|
|
|
|
int frameComplete = false;
|
|
while ( !frameComplete ) {
|
|
av_init_packet(&packet);
|
|
|
|
ret = av_read_frame(mFormatContext, &packet);
|
|
if ( ret < 0 ) {
|
|
if (
|
|
// Check if EOF.
|
|
(
|
|
(ret == AVERROR_EOF) ||
|
|
(mFormatContext->pb && mFormatContext->pb->eof_reached)
|
|
) ||
|
|
// Check for Connection failure.
|
|
(ret == -110)
|
|
) {
|
|
Info("Unable to read packet from stream %d: error %d \"%s\".",
|
|
packet.stream_index, ret, av_make_error_string(ret).c_str());
|
|
} else {
|
|
Error("Unable to read packet from stream %d: error %d \"%s\".",
|
|
packet.stream_index, ret, av_make_error_string(ret).c_str());
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
if ( (packet.pts != AV_NOPTS_VALUE) && (packet.pts < -100000) ) {
|
|
// Ignore packets that have crazy negative pts.
|
|
// They aren't supposed to happen.
|
|
Warning("Ignore packet because pts %" PRId64 " is massively negative."
|
|
" Error count is %d", packet.pts, error_count);
|
|
dumpPacket(
|
|
mFormatContext->streams[packet.stream_index],
|
|
&packet,
|
|
"Ignored packet");
|
|
if ( error_count > 100 ) {
|
|
Error("Bad packet count over 100, going to close and re-open stream");
|
|
return -1;
|
|
}
|
|
error_count += 1;
|
|
continue;
|
|
}
|
|
// If we get a good frame, decrease the error count.. We could zero it...
|
|
if ( error_count > 0 ) error_count -= 1;
|
|
|
|
int keyframe = packet.flags & AV_PKT_FLAG_KEY;
|
|
bytes += packet.size;
|
|
dumpPacket(
|
|
mFormatContext->streams[packet.stream_index],
|
|
&packet,
|
|
"Captured Packet");
|
|
if ( packet.dts == AV_NOPTS_VALUE ) {
|
|
packet.dts = packet.pts;
|
|
}
|
|
|
|
// Video recording
|
|
if ( recording.tv_sec ) {
|
|
uint32_t last_event_id = monitor->GetLastEventId();
|
|
uint32_t video_writer_event_id = monitor->GetVideoWriterEventId();
|
|
|
|
if ( last_event_id != video_writer_event_id ) {
|
|
Debug(2, "Have change of event. last_event(%d), our current (%d)",
|
|
last_event_id, video_writer_event_id);
|
|
|
|
if ( videoStore ) {
|
|
Info("Re-starting video storage module");
|
|
|
|
// I don't know if this is important or not... but I figure we might
|
|
// as well write this last packet out to the store before closing it.
|
|
// Also don't know how much it matters for audio.
|
|
if ( packet.stream_index == mVideoStreamId ) {
|
|
// Write the packet to our video store
|
|
int ret = videoStore->writeVideoFramePacket(&packet);
|
|
if ( ret < 0 ) { // Less than zero and we skipped a frame
|
|
Warning("Error writing last packet to videostore.");
|
|
}
|
|
} // end if video
|
|
|
|
delete videoStore;
|
|
videoStore = NULL;
|
|
have_video_keyframe = false;
|
|
|
|
monitor->SetVideoWriterEventId(0);
|
|
} // end if videoStore
|
|
} // end if end of recording
|
|
|
|
if ( last_event_id && !videoStore ) {
|
|
// Instantiate the video storage module
|
|
|
|
packetqueue->dumpQueue();
|
|
if ( record_audio ) {
|
|
if ( mAudioStreamId == -1 ) {
|
|
Debug(3, "Record Audio on but no audio stream found");
|
|
videoStore = new VideoStore((const char *) event_file, "mp4",
|
|
mFormatContext->streams[mVideoStreamId],
|
|
NULL,
|
|
this->getMonitor());
|
|
|
|
} else {
|
|
Debug(3, "Video module initiated with audio stream");
|
|
videoStore = new VideoStore((const char *) event_file, "mp4",
|
|
mFormatContext->streams[mVideoStreamId],
|
|
mFormatContext->streams[mAudioStreamId],
|
|
this->getMonitor());
|
|
}
|
|
} else {
|
|
if ( mAudioStreamId >= 0 ) {
|
|
Debug(3, "Record_audio is false so exclude audio stream");
|
|
}
|
|
videoStore = new VideoStore((const char *) event_file, "mp4",
|
|
mFormatContext->streams[mVideoStreamId],
|
|
NULL,
|
|
this->getMonitor());
|
|
} // end if record_audio
|
|
|
|
if ( !videoStore->open() ) {
|
|
delete videoStore;
|
|
videoStore = NULL;
|
|
|
|
} else {
|
|
monitor->SetVideoWriterEventId(last_event_id);
|
|
|
|
// Need to write out all the frames from the last keyframe?
|
|
// No... need to write out all frames from when the event began.
|
|
// Due to PreEventFrames, this could be more than
|
|
// since the last keyframe.
|
|
unsigned int packet_count = 0;
|
|
ZMPacket *queued_packet;
|
|
struct timeval video_offset = {0};
|
|
|
|
// Clear all packets that predate the moment when the recording began
|
|
packetqueue->clear_unwanted_packets(
|
|
&recording, 0, mVideoStreamId);
|
|
|
|
while ( (queued_packet = packetqueue->popPacket()) ) {
|
|
AVPacket *avp = queued_packet->av_packet();
|
|
|
|
// compute time offset between event start and first frame in video
|
|
if (packet_count == 0){
|
|
monitor->SetVideoWriterStartTime(queued_packet->timestamp);
|
|
timersub(&queued_packet->timestamp, &recording, &video_offset);
|
|
Info("Event video offset is %.3f sec (<0 means video starts early)",
|
|
video_offset.tv_sec + video_offset.tv_usec*1e-6);
|
|
}
|
|
|
|
packet_count += 1;
|
|
// Write the packet to our video store
|
|
Debug(2, "Writing queued packet stream: %d KEY %d, remaining (%d)",
|
|
avp->stream_index,
|
|
avp->flags & AV_PKT_FLAG_KEY,
|
|
packetqueue->size());
|
|
if ( avp->stream_index == mVideoStreamId ) {
|
|
ret = videoStore->writeVideoFramePacket(avp);
|
|
have_video_keyframe = true;
|
|
} else if ( avp->stream_index == mAudioStreamId ) {
|
|
ret = videoStore->writeAudioFramePacket(avp);
|
|
} else {
|
|
Warning("Unknown stream id in queued packet (%d)",
|
|
avp->stream_index);
|
|
ret = -1;
|
|
}
|
|
if ( ret < 0 ) {
|
|
// Less than zero and we skipped a frame
|
|
}
|
|
delete queued_packet;
|
|
} // end while packets in the packetqueue
|
|
Debug(2, "Wrote %d queued packets", packet_count);
|
|
}
|
|
} // end if ! was recording
|
|
|
|
} else {
|
|
// Not recording
|
|
|
|
if ( videoStore ) {
|
|
Debug(1, "Deleting videoStore instance");
|
|
delete videoStore;
|
|
videoStore = NULL;
|
|
have_video_keyframe = false;
|
|
monitor->SetVideoWriterEventId(0);
|
|
}
|
|
} // end if recording or not
|
|
|
|
// Buffer video packets, since we are not recording.
|
|
// All audio packets are keyframes, so only if it's a video keyframe
|
|
if ( packet.stream_index == mVideoStreamId ) {
|
|
if ( keyframe ) {
|
|
Debug(3, "Clearing queue");
|
|
if (video_buffer_duration.tv_sec > 0 || video_buffer_duration.tv_usec > 0) {
|
|
packetqueue->clearQueue(&video_buffer_duration, mVideoStreamId);
|
|
}
|
|
else {
|
|
packetqueue->clearQueue(monitor->GetPreEventCount(), mVideoStreamId);
|
|
}
|
|
|
|
if (
|
|
packetqueue->packet_count(mVideoStreamId)
|
|
>=
|
|
monitor->GetImageBufferCount()
|
|
) {
|
|
Warning(
|
|
"ImageBufferCount %d is too small. "
|
|
"Needs to be at least %d. "
|
|
"Either increase it or decrease time between keyframes",
|
|
monitor->GetImageBufferCount(),
|
|
packetqueue->packet_count(mVideoStreamId)+1);
|
|
}
|
|
|
|
packetqueue->queuePacket(&packet);
|
|
} else if ( packetqueue->size() ) {
|
|
// it's a keyframe or we already have something in the queue
|
|
packetqueue->queuePacket(&packet);
|
|
}
|
|
} else if ( packet.stream_index == mAudioStreamId ) {
|
|
// Ensure that the queue always begins with a video keyframe
|
|
if ( record_audio && packetqueue->size() ) {
|
|
packetqueue->queuePacket(&packet);
|
|
}
|
|
} // end if packet type
|
|
|
|
if ( packet.stream_index == mVideoStreamId ) {
|
|
if ( (have_video_keyframe || keyframe) && videoStore ) {
|
|
int ret = videoStore->writeVideoFramePacket(&packet);
|
|
if ( ret < 0 ) {
|
|
// Less than zero and we skipped a frame
|
|
Error("Unable to write video packet code: %d, framecount %d: %s",
|
|
ret, frameCount, av_make_error_string(ret).c_str());
|
|
} else {
|
|
have_video_keyframe = true;
|
|
}
|
|
} // end if keyframe or have_video_keyframe
|
|
|
|
ret = zm_send_packet_receive_frame(mVideoCodecContext, mRawFrame, packet);
|
|
if ( ret < 0 ) {
|
|
if ( AVERROR(EAGAIN) != ret ) {
|
|
Warning("Unable to receive frame %d: code %d %s. error count is %d",
|
|
frameCount, ret, av_make_error_string(ret).c_str(), error_count);
|
|
error_count += 1;
|
|
if ( error_count > 100 ) {
|
|
Error("Error count over 100, going to close and re-open stream");
|
|
return -1;
|
|
}
|
|
#if HAVE_LIBAVUTIL_HWCONTEXT_H
|
|
#if LIBAVCODEC_VERSION_CHECK(57, 89, 0, 89, 0)
|
|
if ( (ret == AVERROR_INVALIDDATA ) && (hw_pix_fmt != AV_PIX_FMT_NONE) ) {
|
|
use_hwaccel = false;
|
|
return -1;
|
|
}
|
|
#endif
|
|
#endif
|
|
}
|
|
zm_av_packet_unref(&packet);
|
|
continue;
|
|
}
|
|
if ( error_count > 0 ) error_count--;
|
|
zm_dump_video_frame(mRawFrame, "raw frame from decoder");
|
|
#if HAVE_LIBAVUTIL_HWCONTEXT_H
|
|
#if LIBAVCODEC_VERSION_CHECK(57, 89, 0, 89, 0)
|
|
if (
|
|
(hw_pix_fmt != AV_PIX_FMT_NONE)
|
|
&&
|
|
(mRawFrame->format == hw_pix_fmt)
|
|
) {
|
|
/* retrieve data from GPU to CPU */
|
|
ret = av_hwframe_transfer_data(hwFrame, mRawFrame, 0);
|
|
if ( ret < 0 ) {
|
|
Error("Unable to transfer frame at frame %d: %s, continuing",
|
|
frameCount, av_make_error_string(ret).c_str());
|
|
zm_av_packet_unref(&packet);
|
|
continue;
|
|
}
|
|
zm_dump_video_frame(hwFrame, "After hwtransfer");
|
|
|
|
hwFrame->pts = mRawFrame->pts;
|
|
input_frame = hwFrame;
|
|
} else {
|
|
#endif
|
|
#endif
|
|
input_frame = mRawFrame;
|
|
#if HAVE_LIBAVUTIL_HWCONTEXT_H
|
|
#if LIBAVCODEC_VERSION_CHECK(57, 89, 0, 89, 0)
|
|
}
|
|
#endif
|
|
#endif
|
|
if ( transfer_to_image(image, mFrame, input_frame) < 0 ) {
|
|
Error("Failed to transfer from frame to image");
|
|
zm_av_packet_unref(&packet);
|
|
return -1;
|
|
}
|
|
|
|
frameComplete = 1;
|
|
frameCount++;
|
|
} else if ( packet.stream_index == mAudioStreamId ) {
|
|
// FIXME best way to copy all other streams
|
|
frameComplete = 1;
|
|
if ( videoStore ) {
|
|
if ( record_audio ) {
|
|
if ( have_video_keyframe ) {
|
|
// Write the packet to our video store
|
|
// FIXME no relevance of last key frame
|
|
int ret = videoStore->writeAudioFramePacket(&packet);
|
|
if ( ret < 0 ) {
|
|
// Less than zero and we skipped a frame
|
|
Warning("Failure to write audio packet.");
|
|
zm_av_packet_unref(&packet);
|
|
return 0;
|
|
}
|
|
} else {
|
|
Debug(3, "Not recording audio because no video keyframe");
|
|
}
|
|
} else {
|
|
Debug(4, "Not doing recording of audio packet");
|
|
}
|
|
} else {
|
|
Debug(4, "Have audio packet, but not recording atm");
|
|
}
|
|
zm_av_packet_unref(&packet);
|
|
return 0;
|
|
} else {
|
|
#if LIBAVUTIL_VERSION_CHECK(56, 23, 0, 23, 0)
|
|
Debug(3, "Some other stream index %d, %s",
|
|
packet.stream_index,
|
|
av_get_media_type_string(
|
|
mFormatContext->streams[packet.stream_index]->codecpar->codec_type)
|
|
);
|
|
#else
|
|
Debug(3, "Some other stream index %d", packet.stream_index);
|
|
#endif
|
|
} // end if is video or audio or something else
|
|
|
|
// the packet contents are ref counted... when queuing, we allocate another
|
|
// packet and reference it with that one, so we should always need to unref
|
|
// here, which should not affect the queued version.
|
|
zm_av_packet_unref(&packet);
|
|
} // end while ! frameComplete
|
|
return frameCount;
|
|
} // end FfmpegCamera::CaptureAndRecord
|
|
|
|
int FfmpegCamera::transfer_to_image(
|
|
Image &image,
|
|
AVFrame *output_frame,
|
|
AVFrame *input_frame
|
|
) {
|
|
uint8_t* image_buffer; // pointer to buffer in image
|
|
uint8_t* buffer; // pointer to either image_buffer or frame_buffer
|
|
|
|
/* Request a writeable buffer of the target image */
|
|
image_buffer = image.WriteBuffer(width, height, colours, subpixelorder);
|
|
if ( image_buffer == NULL ) {
|
|
Error("Failed requesting writeable buffer for the captured image.");
|
|
return -1;
|
|
}
|
|
// if image_buffer was allocated then use it.
|
|
buffer = frame_buffer ? frame_buffer : image_buffer;
|
|
|
|
#if LIBAVUTIL_VERSION_CHECK(54, 6, 0, 6, 0)
|
|
// From what I've read, we should align the linesizes to 32bit so that ffmpeg can use SIMD instructions too.
|
|
int size = av_image_fill_arrays(
|
|
output_frame->data, output_frame->linesize,
|
|
buffer, imagePixFormat, width, height,
|
|
alignment
|
|
);
|
|
if ( size < 0 ) {
|
|
Error("Problem setting up data pointers into image %s",
|
|
av_make_error_string(size).c_str());
|
|
} else {
|
|
Debug(4, "av_image_fill_array %dx%d alignment: %d = %d, buffer size is %d",
|
|
width, height, alignment, size, image.Size());
|
|
}
|
|
Debug(1, "ffmpegcamera: width %d height %d linesize %d colours %d imagesize %d", width, height, linesize, colours, imagesize);
|
|
if ( linesize != (unsigned int)output_frame->linesize[0] ) {
|
|
Error("Bad linesize expected %d got %d", linesize, output_frame->linesize[0]);
|
|
}
|
|
#else
|
|
avpicture_fill((AVPicture *)output_frame, buffer,
|
|
imagePixFormat, width, height);
|
|
#endif
|
|
|
|
#if HAVE_LIBSWSCALE
|
|
if ( !mConvertContext ) {
|
|
mConvertContext = sws_getContext(
|
|
input_frame->width,
|
|
input_frame->height,
|
|
(AVPixelFormat)input_frame->format,
|
|
width, height,
|
|
imagePixFormat, SWS_BICUBIC, NULL,
|
|
NULL, NULL);
|
|
if ( mConvertContext == NULL ) {
|
|
Error("Unable to create conversion context for %s from %s to %s",
|
|
mPath.c_str(),
|
|
av_get_pix_fmt_name((AVPixelFormat)input_frame->format),
|
|
av_get_pix_fmt_name(imagePixFormat)
|
|
);
|
|
return -1;
|
|
}
|
|
Debug(1, "Setup conversion context for %dx%d %s to %dx%d %s",
|
|
input_frame->width, input_frame->height,
|
|
av_get_pix_fmt_name((AVPixelFormat)input_frame->format),
|
|
width, height,
|
|
av_get_pix_fmt_name(imagePixFormat)
|
|
);
|
|
}
|
|
|
|
int ret =
|
|
sws_scale(
|
|
mConvertContext, input_frame->data, input_frame->linesize,
|
|
0, mVideoCodecContext->height,
|
|
output_frame->data, output_frame->linesize);
|
|
if ( ret < 0 ) {
|
|
Error("Unable to convert format %u %s linesize %d,%d height %d to format %u %s linesize %d,%d at frame %d codec %u %s lines %d: code: %d",
|
|
input_frame->format, av_get_pix_fmt_name((AVPixelFormat)input_frame->format),
|
|
input_frame->linesize[0], input_frame->linesize[1], mVideoCodecContext->height,
|
|
imagePixFormat,
|
|
av_get_pix_fmt_name(imagePixFormat),
|
|
output_frame->linesize[0], output_frame->linesize[1],
|
|
frameCount,
|
|
mVideoCodecContext->pix_fmt, av_get_pix_fmt_name(mVideoCodecContext->pix_fmt),
|
|
mVideoCodecContext->height,
|
|
ret
|
|
);
|
|
return -1;
|
|
}
|
|
Debug(4, "Able to convert format %u %s linesize %d,%d height %d to format %u %s linesize %d,%d at frame %d codec %u %s %dx%d ",
|
|
input_frame->format, av_get_pix_fmt_name((AVPixelFormat)input_frame->format),
|
|
input_frame->linesize[0], input_frame->linesize[1], mVideoCodecContext->height,
|
|
imagePixFormat,
|
|
av_get_pix_fmt_name(imagePixFormat),
|
|
output_frame->linesize[0], output_frame->linesize[1],
|
|
frameCount,
|
|
mVideoCodecContext->pix_fmt, av_get_pix_fmt_name(mVideoCodecContext->pix_fmt),
|
|
output_frame->width,
|
|
output_frame->height
|
|
);
|
|
#else // HAVE_LIBSWSCALE
|
|
Fatal("You must compile ffmpeg with the --enable-swscale "
|
|
"option to use ffmpeg cameras");
|
|
#endif // HAVE_LIBSWSCALE
|
|
if ( buffer != image_buffer ) {
|
|
Debug(1, "Copying image-buffer to buffer");
|
|
// Have to copy contents of image_buffer to directbuffer.
|
|
// Since linesize isn't the same have to copy line by line
|
|
uint8_t *image_buffer_ptr = image_buffer;
|
|
int row_size = output_frame->width * colours;
|
|
for ( int i = 0; i < output_frame->height; i++ ) {
|
|
memcpy(image_buffer_ptr, buffer, row_size);
|
|
image_buffer_ptr += row_size;
|
|
buffer += row_size;
|
|
}
|
|
}
|
|
return 0;
|
|
} // end int FfmpegCamera::transfer_to_image
|
|
|
|
int FfmpegCamera::FfmpegInterruptCallback(void *ctx) {
|
|
// FfmpegCamera* camera = reinterpret_cast<FfmpegCamera*>(ctx);
|
|
// Debug(4, "FfmpegInterruptCallback");
|
|
return zm_terminate;
|
|
}
|
|
|
|
#endif // HAVE_LIBAVFORMAT
|