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/*
* File: avdetector.cpp
* Author: savop
*
* Created on 26. Oktober 2009, 13:01
*/
#include "avdetector.h"
extern "C" {
#include <libavformat/avformat.h>
#include <libavcodec/avcodec.h>
}
using namespace std;
int cAudioVideoDetector::detectVideoProperties(cUPnPResource* Resource, const char* Filename){
// // Register avformat
av_register_all();
AVFormatContext *FormatCtx = NULL;
if(av_open_input_file(&FormatCtx, Filename, NULL, 0, NULL)){
ERROR("AVDetector: Error while opening file %s", Filename);
return -1;
}
if(av_find_stream_info(FormatCtx)<0){
ERROR("AVDetector: Cannot find the stream information");
return -1;
}
#ifdef DEBUG
dump_format(FormatCtx, 0, Filename, 0);
#endif
unsigned int i; int videoStream = -1;
AVCodecContext *CodecCtx = NULL;
for(i = 0; i < FormatCtx->nb_streams; i++){
if(FormatCtx->streams[i]->codec->codec_type == CODEC_TYPE_VIDEO){
videoStream = i;
break;
}
}
if(videoStream == -1){
ERROR("AVDetector: No video stream found");
return -1;
}
CodecCtx = FormatCtx->streams[videoStream]->codec;
AVCodec* Codec = avcodec_find_decoder(CodecCtx->codec_id);
unsigned int width = CodecCtx->width;
unsigned int height = CodecCtx->height;
unsigned int bitrate = CodecCtx->bit_rate;
const char* codecName = (Codec)?Codec->name:"unknown";
MESSAGE("AVDetector: %s-stream %dx%d at %d bit/s", codecName, width, height, bitrate);
Resource->mBitrate = bitrate;
Resource->mSampleFrequency = CodecCtx->sample_rate;
Resource->mResolution = cString::sprintf("%dx%d", width, height);
return 0;
}
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