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zoneminder/src/zm_videostore.cpp

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//
// ZoneMinder Video Storage Implementation
// Written by Chris Wiggins
// http://chriswiggins.co.nz
// Modification by Steve Gilvarry
//
// 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
//
#define __STDC_FORMAT_MACROS 1
#include <stdlib.h>
#include <string.h>
#include <inttypes.h>
#include "zm.h"
#include "zm_videostore.h"
extern "C"{
#include "libavutil/time.h"
}
VideoStore::VideoStore(const char *filename_in, const char *format_in,
AVStream *input_st,
AVStream *inpaud_st,
int64_t nStartTime,
Monitor::Orientation orientation
) {
//store inputs in variables local to class
filename = filename_in;
format = format_in;
keyframeMessage = false;
keyframeSkipNumber = 0;
Info("Opening video storage stream %s format: %s\n", filename, format);
int ret;
//Init everything we need
av_register_all();
ret = avformat_alloc_output_context2(&oc, NULL, NULL, filename);
if ( ret < 0 ) {
Warning("Could not create video storage stream %s as no output context"
" could be assigned based on filename: %s",
filename,
av_make_error_string(ret).c_str()
);
}
//Couldn't deduce format from filename, trying from format name
if (!oc) {
avformat_alloc_output_context2(&oc, NULL, format, filename);
if (!oc) {
Fatal("Could not create video storage stream %s as no output context"
" could not be assigned based on filename or format %s",
filename, format);
}
}
AVDictionary *pmetadata = NULL;
int dsr = av_dict_set(&pmetadata, "title", "Zoneminder Security Recording", 0);
if (dsr < 0) Warning("%s:%d: title set failed", __FILE__, __LINE__ );
oc->metadata = pmetadata;
fmt = oc->oformat;
video_st = avformat_new_stream(oc, (AVCodec *)input_st->codec->codec);
if (!video_st) {
Fatal("Unable to create video out stream\n");
}
ret = avcodec_copy_context(video_st->codec, input_st->codec);
if (ret < 0) {
Fatal("Unable to copy input video context to output video context %s\n",
av_make_error_string(ret).c_str());
}
if ( input_st->codec->sample_aspect_ratio.den && ( video_st->sample_aspect_ratio.den != input_st->codec->sample_aspect_ratio.den ) ) {
Warning("Fixing sample_aspect_ratio.den from (%d) to (%d)", video_st->sample_aspect_ratio.den, input_st->codec->sample_aspect_ratio.den );
video_st->sample_aspect_ratio.den = input_st->codec->sample_aspect_ratio.den;
} else {
Debug(3, "aspect ratio denominator is (%d)", video_st->sample_aspect_ratio.den );
}
if ( input_st->codec->sample_aspect_ratio.num && ( video_st->sample_aspect_ratio.num != input_st->codec->sample_aspect_ratio.num ) ) {
Warning("Fixing sample_aspect_ratio.num from video_st(%d) to input_st(%d)", video_st->sample_aspect_ratio.num, input_st->codec->sample_aspect_ratio.num );
video_st->sample_aspect_ratio.num = input_st->codec->sample_aspect_ratio.num;
} else {
Debug(3, "aspect ratio numerator is (%d)", video_st->sample_aspect_ratio.num );
}
if ( video_st->codec->codec_id != input_st->codec->codec_id ) {
Warning("Fixing video_st->codec->codec_id");
video_st->codec->codec_id = input_st->codec->codec_id;
}
if ( ! video_st->codec->time_base.num ) {
Warning("video_st->codec->time_base.num is not set%d/%d. Fixing by setting it to 1", video_st->codec->time_base.num, video_st->codec->time_base.den);
Warning("video_st->codec->time_base.num is not set%d/%d. Fixing by setting it to 1", video_st->time_base.num, video_st->time_base.den);
video_st->codec->time_base.num = video_st->time_base.num;
video_st->codec->time_base.den = video_st->time_base.den;
}
if ( video_st->sample_aspect_ratio.den != video_st->codec->sample_aspect_ratio.den ) {
Warning("Fixingample_aspect_ratio.den");
video_st->sample_aspect_ratio.den = video_st->codec->sample_aspect_ratio.den;
}
if ( video_st->sample_aspect_ratio.num != input_st->codec->sample_aspect_ratio.num ) {
Warning("Fixingample_aspect_ratio.num");
video_st->sample_aspect_ratio.num = input_st->codec->sample_aspect_ratio.num;
}
if ( video_st->codec->codec_id != input_st->codec->codec_id ) {
Warning("Fixing video_st->codec->codec_id");
video_st->codec->codec_id = input_st->codec->codec_id;
}
if ( ! video_st->codec->time_base.num ) {
Warning("video_st->codec->time_base.num is not set%d/%d. Fixing by setting it to 1", video_st->codec->time_base.num, video_st->codec->time_base.den);
Warning("video_st->codec->time_base.num is not set%d/%d. Fixing by setting it to 1", video_st->time_base.num, video_st->time_base.den);
video_st->codec->time_base.num = video_st->time_base.num;
video_st->codec->time_base.den = video_st->time_base.den;
}
video_st->codec->codec_tag = 0;
if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
video_st->codec->flags |= CODEC_FLAG_GLOBAL_HEADER;
}
if ( orientation ) {
if ( orientation == Monitor::ROTATE_0 ) {
} else if ( orientation == Monitor::ROTATE_90 ) {
dsr = av_dict_set( &video_st->metadata, "rotate", "90", 0);
if (dsr < 0) Warning("%s:%d: title set failed", __FILE__, __LINE__ );
} else if ( orientation == Monitor::ROTATE_180 ) {
dsr = av_dict_set( &video_st->metadata, "rotate", "180", 0);
if (dsr < 0) Warning("%s:%d: title set failed", __FILE__, __LINE__ );
} else if ( orientation == Monitor::ROTATE_270 ) {
dsr = av_dict_set( &video_st->metadata, "rotate", "270", 0);
if (dsr < 0) Warning("%s:%d: title set failed", __FILE__, __LINE__ );
} else {
Warning( "Unsupported Orientation(%d)", orientation );
}
}
if (inpaud_st) {
audio_st = avformat_new_stream(oc, (AVCodec *)inpaud_st->codec->codec);
if (!audio_st) {
Error("Unable to create audio out stream\n");
audio_st = NULL;
} else {
ret = avcodec_copy_context(audio_st->codec, inpaud_st->codec);
if (ret < 0) {
Fatal("Unable to copy audio context %s\n", av_make_error_string(ret).c_str());
}
audio_st->codec->codec_tag = 0;
if ( audio_st->codec->channels > 1 ) {
Warning("Audio isn't mono, changing it.");
audio_st->codec->channels = 1;
}
if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
audio_st->codec->flags |= CODEC_FLAG_GLOBAL_HEADER;
}
}
} else {
Debug(3, "No Audio output stream");
audio_st = NULL;
}
/* open the output file, if needed */
if (!(fmt->flags & AVFMT_NOFILE)) {
ret = avio_open2(&oc->pb, filename, AVIO_FLAG_WRITE,NULL,NULL);
if (ret < 0) {
Fatal("Could not open output file '%s': %s\n", filename,
av_make_error_string(ret).c_str());
}
}
//av_dict_set(&opts, "movflags", "frag_custom+dash+delay_moov", 0);
//if ((ret = avformat_write_header(ctx, &opts)) < 0) {
//}
//os->ctx_inited = 1;
//avio_flush(ctx->pb);
//av_dict_free(&opts);
/* Write the stream header, if any. */
ret = avformat_write_header(oc, NULL);
if (ret < 0) {
zm_dump_stream_format( oc, 0, 0, 1 );
Fatal("Error occurred when writing output file header to %s: %s\n",
filename,
av_make_error_string(ret).c_str());
}
prevDts = 0;
startPts = 0;
startDts = 0;
filter_in_rescale_delta_last = AV_NOPTS_VALUE;
startTime=av_gettime()-nStartTime;//oc->start_time;
Info("VideoStore startTime=%d\n",startTime);
} // VideoStore::VideoStore
VideoStore::~VideoStore(){
/* Write the trailer before close */
if ( int rc = av_write_trailer(oc) ) {
Error("Error writing trailer %s", av_err2str( rc ) );
} else {
Debug(3, "Sucess Writing trailer");
}
// I wonder if we should be closing the file first.
// I also wonder if we really need to be doing all the context allocation/de-allocation constantly, or whether we can just re-use it. Just do a file open/close/writeheader/etc.
// What if we were only doing audio recording?
if ( video_st ) {
avcodec_close(video_st->codec);
}
if (audio_st) {
avcodec_close(audio_st->codec);
}
// WHen will be not using a file ?
if (!(fmt->flags & AVFMT_NOFILE)) {
/* Close the output file. */
if ( int rc = avio_close(oc->pb) ) {
Error("Error closing avio %s", av_err2str( rc ) );
}
} else {
Debug(3, "Not closing avio because we are not writing to a file.");
}
/* free the stream */
avformat_free_context(oc);
}
void VideoStore::dumpPacket( AVPacket *pkt ){
char b[10240];
snprintf(b, sizeof(b), " pts: %" PRId64 ", dts: %" PRId64 ", data: %p, size: %d, sindex: %d, dflags: %04x, s-pos: %" PRId64 ", c-duration: %" PRId64 "\n"
, pkt->pts
, pkt->dts
, pkt->data
, pkt->size
, pkt->stream_index
, pkt->flags
, pkt->pos
, pkt->convergence_duration
);
Info("%s:%d:DEBUG: %s", __FILE__, __LINE__, b);
}
int VideoStore::writeVideoFramePacket(AVPacket *ipkt, AVStream *input_st){//, AVPacket *lastKeyframePkt){
Debug(3, "before ost_tbcket starttime %d, timebase%d", startTime, video_st->time_base );
zm_dump_stream_format( oc, ipkt->stream_index, 0, 1 );
int64_t ost_tb_start_time = av_rescale_q(startTime, AV_TIME_BASE_Q, video_st->time_base);
Debug(3, "before ost_tbcket starttime %d, ost_tbcket %d", startTime, ost_tb_start_time );
AVPacket opkt, safepkt;
AVPicture pict;
av_init_packet(&opkt);
//Scale the PTS of the outgoing packet to be the correct time base
if (ipkt->pts != AV_NOPTS_VALUE) {
opkt.pts = av_rescale_q(ipkt->pts-startPts, input_st->time_base, video_st->time_base) - ost_tb_start_time;
Debug(3, "opkt.pts = %d from ipkt->pts(%d) - startPts(%d), input->time_base(%d) video_st->time-base(%d)", opkt.pts, ipkt->pts, startPts, input_st->time_base, video_st->time_base );
} else {
opkt.pts = AV_NOPTS_VALUE;
}
//Scale the DTS of the outgoing packet to be the correct time base
if(ipkt->dts == AV_NOPTS_VALUE) {
opkt.dts = av_rescale_q(input_st->cur_dts-startDts, AV_TIME_BASE_Q, video_st->time_base);
Debug(3, "opkt.dts = %d from input_st->cur_dts(%d) - startDts(%d), video_st->time-base(%d)", opkt.dts, input_st->cur_dts, startDts, video_st->time_base );
} else {
opkt.dts = av_rescale_q(ipkt->dts-startDts, input_st->time_base, video_st->time_base);
Debug(3, "opkt.dts = %d from ipkt->dts(%d) - startDts(%d), video_st->time-base(%d)", opkt.dts, ipkt->dts, startDts, video_st->time_base );
}
opkt.dts -= ost_tb_start_time;
opkt.duration = av_rescale_q(ipkt->duration, input_st->time_base, video_st->time_base);
opkt.flags = ipkt->flags;
opkt.pos=-1;
opkt.data = ipkt->data;
opkt.size = ipkt->size;
opkt.stream_index = ipkt->stream_index;
/*opkt.flags |= AV_PKT_FLAG_KEY;*/
if (video_st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (fmt->flags & AVFMT_RAWPICTURE)) {
/* store AVPicture in AVPacket, as expected by the output format */
avpicture_fill(&pict, opkt.data, video_st->codec->pix_fmt, video_st->codec->width, video_st->codec->height);
opkt.data = (uint8_t *)&pict;
opkt.size = sizeof(AVPicture);
opkt.flags |= AV_PKT_FLAG_KEY;
}
memcpy(&safepkt, &opkt, sizeof(AVPacket));
if ((opkt.data == NULL)||(opkt.size < 1)) {
Warning("%s:%d: Mangled AVPacket: discarding frame", __FILE__, __LINE__ );
dumpPacket(&opkt);
} else if ((prevDts > 0) && (prevDts > opkt.dts)) {
Warning("%s:%d: DTS out of order: %lld \u226E %lld; discarding frame", __FILE__, __LINE__, prevDts, opkt.dts);
prevDts = opkt.dts;
dumpPacket(&opkt);
} else {
int ret;
prevDts = opkt.dts; // Unsure if av_interleaved_write_frame() clobbers opkt.dts when out of order, so storing in advance
ret = av_interleaved_write_frame(oc, &opkt);
if(ret<0){
// There's nothing we can really do if the frame is rejected, just drop it and get on with the next
Warning("%s:%d: Writing frame [av_interleaved_write_frame()] failed: %s(%d) ", __FILE__, __LINE__, av_make_error_string(ret).c_str(), (ret));
dumpPacket(&safepkt);
}
}
av_free_packet(&opkt);
return 0;
}
int VideoStore::writeAudioFramePacket(AVPacket *ipkt, AVStream *input_st){
if(!audio_st) {
Error("Called writeAudioFramePacket when no audio_st");
return -1;//FIXME -ve return codes do not free packet in ffmpeg_camera at the moment
}
/*if(!keyframeMessage)
return -1;*/
//zm_dump_stream_format( oc, ipkt->stream_index, 0, 1 );
// What is this doing? Getting the time of the start of this video chunk? Does that actually make sense?
int64_t ost_tb_start_time = av_rescale_q(startTime, AV_TIME_BASE_Q, audio_st->time_base);
AVPacket opkt;
av_init_packet(&opkt);
Debug(3, "after init packet" );
//Scale the PTS of the outgoing packet to be the correct time base
if (ipkt->pts != AV_NOPTS_VALUE) {
Debug(3, "Rescaling output pts");
opkt.pts = av_rescale_q(ipkt->pts-startPts, input_st->time_base, audio_st->time_base) - ost_tb_start_time;
} else {
Debug(3, "Setting output pts to AV_NOPTS_VALUE");
opkt.pts = AV_NOPTS_VALUE;
}
//Scale the DTS of the outgoing packet to be the correct time base
if(ipkt->dts == AV_NOPTS_VALUE) {
Debug(4, "ipkt->dts == AV_NOPTS_VALUE %d to %d", AV_NOPTS_VALUE, opkt.dts );
opkt.dts = av_rescale_q(input_st->cur_dts-startDts, AV_TIME_BASE_Q, audio_st->time_base);
Debug(4, "ipkt->dts == AV_NOPTS_VALUE %d to %d", AV_NOPTS_VALUE, opkt.dts );
} else {
Debug(4, "ipkt->dts != AV_NOPTS_VALUE %d to %d", AV_NOPTS_VALUE, opkt.dts );
opkt.dts = av_rescale_q(ipkt->dts-startDts, input_st->time_base, audio_st->time_base);
Debug(4, "ipkt->dts != AV_NOPTS_VALUE %d to %d", AV_NOPTS_VALUE, opkt.dts );
}
opkt.dts -= ost_tb_start_time;
// Seems like it would be really weird for the codec type to NOT be audiu
if (audio_st->codec->codec_type == AVMEDIA_TYPE_AUDIO && ipkt->dts != AV_NOPTS_VALUE) {
Debug( 4, "code is audio, dts != AV_NOPTS_VALUE " );
int duration = av_get_audio_frame_duration(input_st->codec, ipkt->size);
if(!duration)
duration = input_st->codec->frame_size;
//FIXME where to get filter_in_rescale_delta_last
//FIXME av_rescale_delta doesn't exist in ubuntu vivid libavtools
opkt.dts = opkt.pts = av_rescale_delta(input_st->time_base, ipkt->dts,
(AVRational){1, input_st->codec->sample_rate}, duration, &filter_in_rescale_delta_last,
audio_st->time_base) - ost_tb_start_time;
}
opkt.duration = av_rescale_q(ipkt->duration, input_st->time_base, audio_st->time_base);
opkt.pos=-1;
opkt.flags = ipkt->flags;
opkt.data = ipkt->data;
opkt.size = ipkt->size;
opkt.stream_index = ipkt->stream_index;
int ret;
ret = av_interleaved_write_frame(oc, &opkt);
if(ret!=0){
Fatal("Error encoding audio frame packet: %s\n", av_make_error_string(ret).c_str());
}
Debug(4,"Success writing audio frame" );
av_free_packet(&opkt);
return 0;
}
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