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zoneminder/src/zm_ffmpeg_camera.cpp

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//
// ZoneMinder Ffmpeg Camera Class Implementation, $Date: 2009-01-16 12:18:50 +0000 (Fri, 16 Jan 2009) $, $Revision: 2713 $
// 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.h"
#include "zm_signal.h"
#if HAVE_LIBAVFORMAT
#include "zm_ffmpeg_camera.h"
extern "C" {
#include "libavutil/time.h"
#if HAVE_AVUTIL_HWCONTEXT_H
#include "libavutil/hwcontext.h"
#include "libavutil/hwcontext_qsv.h"
#endif
}
#ifndef AV_ERROR_MAX_STRING_SIZE
#define AV_ERROR_MAX_STRING_SIZE 64
#endif
#ifdef SOLARIS
#include <sys/errno.h> // for ESRCH
#include <signal.h>
#include <pthread.h>
#endif
#if HAVE_AVUTIL_HWCONTEXT_H
static AVPixelFormat get_format(AVCodecContext *avctx, const enum AVPixelFormat *pix_fmts) {
while (*pix_fmts != AV_PIX_FMT_NONE) {
if (*pix_fmts == AV_PIX_FMT_QSV) {
DecodeContext *decode = (DecodeContext *)avctx->opaque;
AVHWFramesContext *frames_ctx;
AVQSVFramesContext *frames_hwctx;
int ret;
/* create a pool of surfaces to be used by the decoder */
avctx->hw_frames_ctx = av_hwframe_ctx_alloc(decode->hw_device_ref);
if (!avctx->hw_frames_ctx)
return AV_PIX_FMT_NONE;
frames_ctx = (AVHWFramesContext*)avctx->hw_frames_ctx->data;
frames_hwctx = (AVQSVFramesContext*)frames_ctx->hwctx;
frames_ctx->format = AV_PIX_FMT_QSV;
frames_ctx->sw_format = avctx->sw_pix_fmt;
frames_ctx->width = FFALIGN(avctx->coded_width, 32);
frames_ctx->height = FFALIGN(avctx->coded_height, 32);
frames_ctx->initial_pool_size = 32;
frames_hwctx->frame_type = MFX_MEMTYPE_VIDEO_MEMORY_DECODER_TARGET;
ret = av_hwframe_ctx_init(avctx->hw_frames_ctx);
if (ret < 0)
return AV_PIX_FMT_NONE;
return AV_PIX_FMT_QSV;
}
pix_fmts++;
}
Error( "The QSV pixel format not offered in get_format()");
return AV_PIX_FMT_NONE;
}
#endif
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, bool p_record_audio ) :
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, p_record_audio ),
mPath( p_path ),
mMethod( p_method ),
mOptions( p_options )
{
if ( capture ) {
FFMPEGInit();
}
hwaccel = false;
#if HAVE_AVUTIL_HWCONTEXT_H
decode = { NULL };
hwFrame = NULL;
#endif
mFormatContext = NULL;
mVideoStreamId = -1;
mAudioStreamId = -1;
mVideoCodecContext = NULL;
mAudioCodecContext = NULL;
mVideoCodec = NULL;
mAudioCodec = NULL;
mRawFrame = NULL;
mFrame = NULL;
frameCount = 0;
mCanCapture = false;
} // end FFmpegCamera::FFmpegCamera
FfmpegCamera::~FfmpegCamera() {
Close();
avformat_network_deinit();
}
int FfmpegCamera::PrimeCapture() {
if ( mCanCapture ) {
Info("Priming capture from %s, Closing", mPath.c_str());
Close();
}
mVideoStreamId = -1;
mAudioStreamId = -1;
Info("Priming capture from %s", mPath.c_str());
return ! OpenFfmpeg();
}
int FfmpegCamera::PreCapture() {
return 0;
}
int FfmpegCamera::Capture(ZMPacket &zm_packet) {
if ( ! mCanCapture ) {
return -1;
}
int ret;
// 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.
if ( (ret = av_read_frame(mFormatContext, &packet)) < 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;
}
dumpPacket(&packet, "ffmpeg_camera in");
if ( 0 && ( packet.dts < 0 ) ) {
zm_av_packet_unref(&packet);
return 0;
}
bytes += packet.size;
zm_packet.set_packet(&packet);
zm_av_packet_unref(&packet);
return 1;
} // FfmpegCamera::Capture
int FfmpegCamera::PostCapture() {
// Nothing to do here
return 0;
}
int FfmpegCamera::OpenFfmpeg() {
int ret;
// Open the input, not necessarily a file
#if !LIBAVFORMAT_VERSION_CHECK(53, 2, 0, 4, 0)
Debug(1, "Calling av_open_input_file");
if ( av_open_input_file(&mFormatContext, mPath.c_str(), NULL, 0, NULL) != 0 )
#else
// Handle options
AVDictionary *opts = NULL;
ret = av_dict_parse_string(&opts, Options().c_str(), "=", ",", 0);
if ( ret < 0 ) {
Warning("Could not parse ffmpeg input options list '%s'", Options().c_str());
} else {
Debug(2,"Could not parse ffmpeg input options list '%s'", Options().c_str());
}
// Set transport method as specified by method field, rtpUni is default
const std::string method = Method();
if ( method == "rtpMulti" ) {
ret = av_dict_set(&opts, "rtsp_transport", "udp_multicast", 0);
} else if ( method == "rtpRtsp" ) {
ret = av_dict_set(&opts, "rtsp_transport", "tcp", 0);
} else if ( method == "rtpRtspHttp" ) {
ret = av_dict_set(&opts, "rtsp_transport", "http", 0);
} else {
Warning("Unknown method (%s)", method.c_str());
}
if ( ret < 0 ) {
Warning("Could not set rtsp_transport method '%s'\n", method.c_str());
}
Debug(1, "Calling avformat_open_input for %s", mPath.c_str());
mFormatContext = avformat_alloc_context( );
// Speed up find_stream_info
//FIXME can speed up initial analysis but need sensible parameters...
//mFormatContext->probesize = 32;
//mFormatContext->max_analyze_duration = 32;
mFormatContext->interrupt_callback.callback = FfmpegInterruptCallback;
mFormatContext->interrupt_callback.opaque = this;
if ( avformat_open_input(&mFormatContext, mPath.c_str(), NULL, &opts) != 0 )
#endif
{
Error("Unable to open input %s due to: %s", mPath.c_str(), strerror(errno));
#if !LIBAVFORMAT_VERSION_CHECK(53, 17, 0, 25, 0)
av_close_input_file(mFormatContext);
#else
if ( mFormatContext ) {
avformat_close_input(&mFormatContext);
mFormatContext = NULL;
}
#endif
av_dict_free(&opts);
return -1;
}
AVDictionaryEntry *e = NULL;
while ( (e = av_dict_get(opts, "", e, AV_DICT_IGNORE_SUFFIX)) != NULL ) {
Warning("Option %s not recognized by ffmpeg", e->key);
}
av_dict_free(&opts);
monitor->GetLastEventId() ;
Debug(1, "Opened input");
Info("Stream open %s, parsing streams...", mPath.c_str());
#if !LIBAVFORMAT_VERSION_CHECK(53, 6, 0, 6, 0)
if ( av_find_stream_info(mFormatContext) < 0 )
#else
if ( avformat_find_stream_info(mFormatContext, 0) < 0 )
#endif
{
Error("Unable to find stream info from %s due to: %s", mPath.c_str(), strerror(errno));
return -1;
}
Debug(4, "Got stream info");
// Find first video stream present
// The one we want Might not be the first
mVideoStreamId = -1;
mAudioStreamId = -1;
for ( unsigned int i=0; i < mFormatContext->nb_streams; i++ ) {
#if LIBAVCODEC_VERSION_CHECK(57, 64, 0, 64, 0)
if ( mFormatContext->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO ) {
#else
#if (LIBAVCODEC_VERSION_CHECK(52, 64, 0, 64, 0) || LIBAVUTIL_VERSION_CHECK(50, 14, 0, 14, 0))
if ( mFormatContext->streams[i]->codec->codec_type == AVMEDIA_TYPE_VIDEO ) {
#else
if ( mFormatContext->streams[i]->codec->codec_type == CODEC_TYPE_VIDEO ) {
#endif
#endif
if ( mVideoStreamId == -1 ) {
mVideoStreamId = i;
// if we break, then we won't find the audio stream
continue;
} else {
Debug(2, "Have another video stream.");
}
}
#if LIBAVCODEC_VERSION_CHECK(57, 64, 0, 64, 0)
if ( mFormatContext->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_AUDIO ) {
#else
#if (LIBAVCODEC_VERSION_CHECK(52, 64, 0, 64, 0) || LIBAVUTIL_VERSION_CHECK(50, 14, 0, 14, 0))
if ( mFormatContext->streams[i]->codec->codec_type == AVMEDIA_TYPE_AUDIO ) {
#else
if ( mFormatContext->streams[i]->codec->codec_type == CODEC_TYPE_AUDIO ) {
#endif
#endif
if ( mAudioStreamId == -1 ) {
mAudioStreamId = i;
} else {
Debug(2, "Have another audio stream.");
}
}
} // end foreach stream
if ( mVideoStreamId == -1 )
Fatal("Unable to locate video stream in %s", mPath.c_str());
if ( mAudioStreamId == -1 )
Debug(3, "Unable to locate audio stream in %s", mPath.c_str());
Debug(3, "Found video stream at index %d", mVideoStreamId);
Debug(3, "Found audio stream at index %d", mAudioStreamId);
#if LIBAVCODEC_VERSION_CHECK(57, 64, 0, 64, 0)
mVideoCodecContext = avcodec_alloc_context3(NULL);
avcodec_parameters_to_context( mVideoCodecContext, mFormatContext->streams[mVideoStreamId]->codecpar );
#else
mVideoCodecContext = mFormatContext->streams[mVideoStreamId]->codec;
#endif
// STolen from ispy
//this fixes issues with rtsp streams!! woot.
//mVideoCodecContext->flags2 |= CODEC_FLAG2_FAST | CODEC_FLAG2_CHUNKS | CODEC_FLAG_LOW_DELAY; // Enable faster H264 decode.
#ifdef CODEC_FLAG2_FAST
mVideoCodecContext->flags2 |= CODEC_FLAG2_FAST | CODEC_FLAG_LOW_DELAY;
#endif
#if HAVE_AVUTIL_HWCONTEXT_H
if ( mVideoCodecContext->codec_id == AV_CODEC_ID_H264 ) {
//vaapi_decoder = new VAAPIDecoder();
//mVideoCodecContext->opaque = vaapi_decoder;
//mVideoCodec = vaapi_decoder->openCodec( mVideoCodecContext );
if ( ! mVideoCodec ) {
// Try to open an hwaccel codec.
if ( (mVideoCodec = avcodec_find_decoder_by_name("h264_vaapi")) == NULL ) {
Debug(1, "Failed to find decoder (h264_vaapi)" );
} else {
Debug(1, "Success finding decoder (h264_vaapi)" );
}
}
if ( ! mVideoCodec ) {
// Try to open an hwaccel codec.
if ( (mVideoCodec = avcodec_find_decoder_by_name("h264_qsv")) == NULL ) {
Debug(1, "Failed to find decoder (h264_qsv)" );
} else {
Debug(1, "Success finding decoder (h264_qsv)" );
/* open the hardware device */
ret = av_hwdevice_ctx_create(&decode.hw_device_ref, AV_HWDEVICE_TYPE_QSV,
"auto", NULL, 0);
if (ret < 0) {
Error("Failed to open the hardware device");
mVideoCodec = NULL;
} else {
mVideoCodecContext->opaque = &decode;
mVideoCodecContext->get_format = get_format;
hwaccel = true;
hwFrame = zm_av_frame_alloc();
}
}
}
} // end if h264
#endif
if ( mVideoCodecContext->codec_id == AV_CODEC_ID_H264 ) {
if ( (mVideoCodec = avcodec_find_decoder_by_name("h264_mmal")) == NULL ) {
Debug(1, "Failed to find decoder (h264_mmal)");
} else {
Debug(1, "Success finding decoder (h264_mmal)");
}
}
if ( (!mVideoCodec) and ( (mVideoCodec = avcodec_find_decoder(mVideoCodecContext->codec_id)) == NULL ) ) {
// Try and get the codec from the codec context
Error("Can't find codec for video stream from %s", mPath.c_str());
return -1;
} else {
Debug(1, "Video Found decoder %s", mVideoCodec->name);
zm_dump_stream_format(mFormatContext, mVideoStreamId, 0, 0);
// Open the codec
#if !LIBAVFORMAT_VERSION_CHECK(53, 8, 0, 8, 0)
Debug ( 1, "Calling avcodec_open" );
if ( avcodec_open(mVideoCodecContext, mVideoCodec) < 0 ){
#else
Debug ( 1, "Calling video avcodec_open2" );
if ( avcodec_open2(mVideoCodecContext, mVideoCodec, &opts) < 0 ) {
#endif
AVDictionaryEntry *e = NULL;
while ( (e = av_dict_get(opts, "", e, AV_DICT_IGNORE_SUFFIX)) != NULL ) {
Warning("Option %s not recognized by ffmpeg", e->key);
}
Error("Unable to open codec for video stream from %s", mPath.c_str());
av_dict_free(&opts);
return -1;
} else {
AVDictionaryEntry *e = NULL;
if ( (e = av_dict_get(opts, "", e, AV_DICT_IGNORE_SUFFIX)) != NULL ) {
Warning("Option %s not recognized by ffmpeg", e->key);
}
av_dict_free(&opts);
}
} // end if success opening codec
if ( mVideoCodecContext->hwaccel != NULL ) {
Debug(1, "HWACCEL in use");
} else {
Debug(1, "HWACCEL not in use");
}
if ( mAudioStreamId >= 0 ) {
#if LIBAVCODEC_VERSION_CHECK(57, 64, 0, 64, 0)
mAudioCodecContext = avcodec_alloc_context3(NULL);
avcodec_parameters_to_context(mAudioCodecContext, mFormatContext->streams[mAudioStreamId]->codecpar);
#else
mAudioCodecContext = mFormatContext->streams[mAudioStreamId]->codec;
#endif
if ( (mAudioCodec = avcodec_find_decoder(mAudioCodecContext->codec_id)) == NULL ) {
Debug(1, "Can't find codec for audio stream from %s", mPath.c_str());
} else {
Debug(1, "Audio Found decoder");
zm_dump_stream_format(mFormatContext, mAudioStreamId, 0, 0);
// Open the codec
#if !LIBAVFORMAT_VERSION_CHECK(53, 8, 0, 8, 0)
Debug(1, "Calling avcodec_open");
if ( avcodec_open(mAudioCodecContext, mAudioCodec) < 0 )
#else
Debug(1, "Calling avcodec_open2");
if ( avcodec_open2(mAudioCodecContext, mAudioCodec, 0) < 0 )
#endif
Fatal("Unable to open codec for video stream from %s", mPath.c_str());
}
Debug(1, "Opened audio codec");
} // end if have audio stream
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 1;
} // 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 ( 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 ( mFormatContext ) {
#if !LIBAVFORMAT_VERSION_CHECK(53, 17, 0, 25, 0)
av_close_input_file(mFormatContext);
#else
avformat_close_input(&mFormatContext);
#endif
mFormatContext = NULL;
}
return 0;
} // end FfmpegCamera::Close
int FfmpegCamera::FfmpegInterruptCallback(void *ctx) {
//FfmpegCamera* camera = reinterpret_cast<FfmpegCamera*>(ctx);
return zm_terminate;
}
#endif // HAVE_LIBAVFORMAT
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