diff options
Diffstat (limited to 'avcodec_audio_example2.c')
| -rw-r--r-- | avcodec_audio_example2.c | 143 |
1 files changed, 0 insertions, 143 deletions
diff --git a/avcodec_audio_example2.c b/avcodec_audio_example2.c deleted file mode 100644 index 6546d3f..0000000 --- a/avcodec_audio_example2.c +++ /dev/null @@ -1,143 +0,0 @@ -//this seems to be obsolete!!!!!!!!!!!!!!!!! - - - - -bool Render_context::load_audio(string &filename){ - //load audio into memory and create thumbnail - - av_register_all(); - avcodec_register_all(); - //av_register_all(); - //av_ini - - AVFormatContext* container=avformat_alloc_context(); - if(avformat_open_input(&container,filename.c_str(),NULL,NULL)<0){ - cerr << "Could not open file" << endl; - return false; - } - -//header in avformat.h definition in utils.c in ffmpeg/libavformat -//int avformat_open_input(AVFormatContext **ps, const char *filename, AVInputFormat *fmt, AVDictionary **options) -//set input or dictionary?? - - - if(av_find_stream_info(container)<0){ - cerr << "Could not find file info"<< endl; - return false; - } - - //added to try and locate missing audio streams - //container->flags |= AVFMT_FLAG_NONBLOCK; - // - cerr << "found " << container->nb_streams << " streams" << endl; - av_dump_format(container,0,filename.c_str(),false); - cerr << "found " << container->nb_streams << " streams" << endl; - - //typedef struct AVFormatContext { - // unsigned int nb_streams; - //AVStream **streams; - /** - * A list of all streams in the file. New streams are created with - * avformat_new_stream(). - * - * decoding: streams are created by libavformat in avformat_open_input(). - * If AVFMTCTX_NOHEADER is set in ctx_flags, thandroid on linux i386en new streams may also - * appear in av_read_frame(). - * encoding: streams are created by the user before avformat_write_header(). - */ - - int stream_id=-1; - int i; - for(i=0;i<container->nb_streams;i++){ - cerr << "stream " << i << ": codec type " << container->streams[i]->codec->codec_type << endl; - if(container->streams[i]->codec->codec_type==AVMEDIA_TYPE_AUDIO){ - stream_id=i; - break; - } - } - if(stream_id==-1){ - cerr << "Could not find Audio Stream"<< endl; - return false; - } - - AVDictionary *metadata=container->metadata; - - AVCodecContext *ctx=container->streams[stream_id]->codec; - AVCodec *codec=avcodec_find_decoder(ctx->codec_id); - - if(codec==NULL){ - cerr <<"cannot find codec!"<< endl; - return false; - } - - if(avcodec_open(ctx,codec)<0){ - cerr <<"Codec cannot be found"<< endl; - return false; - } - - //ctx=avcodec_alloc_context3(codec); - - AVSampleFormat sfmt=ctx->sample_fmt; - if(sfmt==AV_SAMPLE_FMT_U8){ - printf("U8\n"); - - //sformat.bits=8; - }else if(sfmt==AV_SAMPLE_FMT_S16){ - printf("S16\n"); - //sformat.bits=16; - }else if(sfmt==AV_SAMPLE_FMT_S32){ - printf("S32\n"); - //sformat.bits=32; - } - - // sformat.channels=ctx->channels; - // sformat.rate=ctx->sample_rate; - // sformat.byte_format=AO_FMT_NATIVE; -// sformat.matrix=0; - - - - AVPacket packet; - av_init_packet(&packet); - - AVFrame *frame=avcodec_alloc_frame(); - - - - int buffer_size=AVCODEC_MAX_AUDIO_FRAME_SIZE+ FF_INPUT_BUFFER_PADDING_SIZE;; - uint8_t buffer[buffer_size]; - packet.data=buffer; - packet.size =buffer_size; - - - - int len; - int frameFinished=0; - while(av_read_frame(container,&packet)>=0) - { - - if(packet.stream_index==stream_id){ - //printf("Audio Frame read \n"); - int len=avcodec_decode_audio4(ctx,frame,&frameFinished,&packet); - //frame-> - if(frameFinished){ - //printf("Finished reading Frame len : %d , nb_samples:%d buffer_size:%d line size: %d \n",len,frame->nb_samples,buffer_size,frame->linesize[0]); - //ao_play(adevice, (char*)frame->extended_data[0],frame->linesize[0] ); - - //DO SOMETHING WITH THE DATA HERE - }else{ - //printf("Not Finished\n"); - } - - }else { - cerr << "Avcodec found some other packet possibly Video\n"; - } - - - } - - av_close_input_file(container); - - return true; -}
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