umc_mp4_spl_int.cpp

这是在PCA下的基于IPP库示例代码例子,在网上下了IPP的库之后,设置相关参数就可以编译该代码.

                                        &ptr,
                                        headerMPEG4.moov.trak[buferVC[0].buf->idTrak]->mdia.minf.stbl.stsd.table->esds.decoderConfig);
                                GetBits(&info->m_video_info.clip_info.width,
                                        13,
                                        &ptr,
                                        headerMPEG4.moov.trak[buferVC[0].buf->idTrak]->mdia.minf.stbl.stsd.table->esds.decoderConfig);
                                GetBits(&temp,
                                        1,
                                        &ptr,
                                        headerMPEG4.moov.trak[buferVC[0].buf->idTrak]->mdia.minf.stbl.stsd.table->esds.decoderConfig);
                                GetBits(&info->m_video_info.clip_info.height,
                                        13,
                                        &ptr,
                                        headerMPEG4.moov.trak[buferVC[0].buf->idTrak]->mdia.minf.stbl.stsd.table->esds.decoderConfig);
                            }// if
                            break;
                        }// if
                    }// if
                }// if
            }// if
        }// for
        if ( info->m_video_info.clip_info.width == -1 )
        {
            info->m_video_info.clip_info.width  =
                (int)headerMPEG4.moov.trak[buferVC[i].buf->idTrak]->mdia.minf.stbl.stsd.table->width;
            info->m_video_info.clip_info.height =
                (int)headerMPEG4.moov.trak[buferVC[i].buf->idTrak]->mdia.minf.stbl.stsd.table->height;
        }
        info->m_video_info.bitrate =
            headerMPEG4.moov.trak[buferVC[i].buf->idTrak]->mdia.minf.stbl.stsd.table->esds.avgBitrate;

        info->m_video_info.duration =
            ((float)(vm_var64s)(headerMPEG4.moov.trak[buferVC[i].buf->idTrak]->mdia.mdhd.duration) /
            (float)headerMPEG4.moov.trak[buferVC[i].buf->idTrak]->mdia.mdhd.time_scale);

        info->m_video_info.framerate =
            (headerMPEG4.moov.trak[buferVC[i].buf->idTrak]->mdia.minf.stbl.stsz.total_entries) /
            info->m_video_info.duration;

        switch ( headerMPEG4.moov.trak[buferVC[i].buf->idTrak]->mdia.minf.stbl.stsd.table->esds.objectTypeID )
        {
            case 0x00:
                info->m_video_info.stream_type = UMC::UNDEF_VIDEO;
                break;
            case 0x6a:
                info->m_video_info.stream_type = UMC::MPEG1_VIDEO;
                break;
            case 0x60:
            case 0x61:
            case 0x62:
                info->m_video_info.stream_type = UMC::MPEG2_VIDEO;
                break;
            case 0x20:
                info->m_video_info.stream_type    = UMC::MPEG4_VIDEO;
                info->m_video_info.stream_subtype = UMC::MPEG4_VIDEO_QTIME;
                break;
            case 0xf1:
                info->m_video_info.stream_type = UMC::H264_VIDEO;
                break;
            case 0xf2:
                info->m_video_info.stream_type = UMC::H263_VIDEO;
                break;
            case 0xf3:
                info->m_video_info.stream_type = UMC::H261_VIDEO;
                break;
            default:
                info->m_video_info.stream_type = UMC::UNDEF_VIDEO;
                break;
        }

        //if any additional video track
        if ( total_video > 1 )
        {
            for ( i = 0; i < total_video; i++ )
            {
                info->m_video_info.clip_info.width = -1;
                // find start code VideoObjectLayer and parse width and height
                for ( j = 0; j < headerMPEG4.moov.trak[buferVC[i].buf->idTrak]->mdia.minf.stbl.stsd.table->esds.decoderConfigLen; j++ )
                {
                    if ( headerMPEG4.moov.trak[buferVC[i].buf->idTrak]->mdia.minf.stbl.stsd.table->esds.decoderConfig[j] == 0x00 )
                    {
                        if ( headerMPEG4.moov.trak[buferVC[i].buf->idTrak]->mdia.minf.stbl.stsd.table->esds.decoderConfig[j + 1] == 0x00 )
                        {
                            if ( headerMPEG4.moov.trak[buferVC[i].buf->idTrak]->mdia.minf.stbl.stsd.table->esds.decoderConfig[j + 2] == 0x01 )
                            {
                                if ( (headerMPEG4.moov.trak[buferVC[i].buf->idTrak]->mdia.minf.stbl.stsd.table->esds.decoderConfig[j + 3] >= 0x20)
                                    && (headerMPEG4.moov.trak[buferVC[i].buf->idTrak]->mdia.minf.stbl.stsd.table->esds.decoderConfig[j + 3] <= 0x2f) )
                                {
                                    ptr = 8 * (j + 4);
                                    GetBits(&temp,
                                            9,
                                                &ptr,
                                            headerMPEG4.moov.trak[buferVC[i].buf->idTrak]->mdia.minf.stbl.stsd.table->esds.decoderConfig);
                                    GetBits(&temp,
                                            1,
                                            &ptr,
                                            headerMPEG4.moov.trak[buferVC[i].buf->idTrak]->mdia.minf.stbl.stsd.table->esds.decoderConfig);
                                    if ( temp )
                                    {
                                        GetBits(&temp,
                                                7,
                                                &ptr,
                                                headerMPEG4.moov.trak[buferVC[i].buf->idTrak]->mdia.minf.stbl.stsd.table->esds.decoderConfig);
                                    }
                                    GetBits(&temp,
                                            4,
                                            &ptr,
                                            headerMPEG4.moov.trak[buferVC[i].buf->idTrak]->mdia.minf.stbl.stsd.table->esds.decoderConfig);
                                    if ( temp == 15 )
                                    {
                                        GetBits(&temp,
                                                18,
                                                &ptr,
                                                headerMPEG4.moov.trak[buferVC[i].buf->idTrak]->mdia.minf.stbl.stsd.table->esds.decoderConfig);
                                    }
                                    GetBits(&temp,
                                            1,
                                            &ptr,
                                            headerMPEG4.moov.trak[buferVC[i].buf->idTrak]->mdia.minf.stbl.stsd.table->esds.decoderConfig);
                                    if ( temp )
                                    {
                                        GetBits(&temp,
                                                3,
                                                &ptr,
                                                headerMPEG4.moov.trak[buferVC[i].buf->idTrak]->mdia.minf.stbl.stsd.table->esds.decoderConfig);
                                        GetBits(&temp,
                                                1,
                                                &ptr,
                                                headerMPEG4.moov.trak[buferVC[i].buf->idTrak]->mdia.minf.stbl.stsd.table->esds.decoderConfig);
                                        if ( temp )
                                        {
                                            GetBits(&temp,
                                                    79,
                                                    &ptr,
                                                    headerMPEG4.moov.trak[buferVC[i].buf->idTrak]->mdia.minf.stbl.stsd.table->esds.decoderConfig);
                                        }
                                    }
                                    GetBits(&video_object_layer_shape,
                                            2,
                                            &ptr,
                                            headerMPEG4.moov.trak[buferVC[i].buf->idTrak]->mdia.minf.stbl.stsd.table->esds.decoderConfig);
                                    if ( temp == 3 )
                                    {
                                        GetBits(&temp,
                                                4,
                                                &ptr,
                                                headerMPEG4.moov.trak[buferVC[i].buf->idTrak]->mdia.minf.stbl.stsd.table->esds.decoderConfig);
                                    }
                                    GetBits(&temp,
                                            1,
                                            &ptr,
                                            headerMPEG4.moov.trak[buferVC[i].buf->idTrak]->mdia.minf.stbl.stsd.table->esds.decoderConfig);
                                    GetBits(&temp,
                                            16,
                                            &ptr,
                                            headerMPEG4.moov.trak[buferVC[i].buf->idTrak]->mdia.minf.stbl.stsd.table->esds.decoderConfig);
                                    temp = temp - 1;
                                    for ( k = 1; k <= 16; k ++ )
                                    {
                                        temp >>= 1;
                                        if ( temp == 0 )
                                        {
                                            break;
                                        }
                                    }
                                    GetBits(&temp,
                                            1,
                                            &ptr,
                                            headerMPEG4.moov.trak[buferVC[i].buf->idTrak]->mdia.minf.stbl.stsd.table->esds.decoderConfig);
                                    GetBits(&temp,
                                            1,
                                            &ptr,
                                            headerMPEG4.moov.trak[buferVC[i].buf->idTrak]->mdia.minf.stbl.stsd.table->esds.decoderConfig);
                                    if ( temp )
                                    {
                                        GetBits(&temp,
                                                k,
                                                &ptr,
                                                headerMPEG4.moov.trak[buferVC[i].buf->idTrak]->mdia.minf.stbl.stsd.table->esds.decoderConfig);
                                    }
                                    if ( video_object_layer_shape == 0 )
                                    {
                                        GetBits(&temp,
                                                1,
                                                &ptr,
                                                headerMPEG4.moov.trak[buferVC[i].buf->idTrak]->mdia.minf.stbl.stsd.table->esds.decoderConfig);
                                        GetBits(&info->m_video_info_aux[i].clip_info.width,
                                                13,
                                                &ptr,
                                                headerMPEG4.moov.trak[buferVC[0].buf->idTrak]->mdia.minf.stbl.stsd.table->esds.decoderConfig);
                                        GetBits(&temp,
                                                1,
                                                &ptr,
                                                headerMPEG4.moov.trak[buferVC[i].buf->idTrak]->mdia.minf.stbl.stsd.table->esds.decoderConfig);
                                        GetBits(&info->m_video_info_aux[i].clip_info.height,
                                                13,
                                                &ptr,
                                                headerMPEG4.moov.trak[buferVC[0].buf->idTrak]->mdia.minf.stbl.stsd.table->esds.decoderConfig);
                                    }// if
                                    break;
                                }// if
                            }// if
                        }// if
                    }// if
                } // for
                if ( info->m_video_info_aux[i].clip_info.width == -1 )
                {
                    info->m_video_info_aux[i].clip_info.width  =
                        (int)headerMPEG4.moov.trak[buferVC[i].buf->idTrak]->mdia.minf.stbl.stsd.table->width;
                    info->m_video_info_aux[i].clip_info.height =
                        (int)headerMPEG4.moov.trak[buferVC[i].buf->idTrak]->mdia.minf.stbl.stsd.table->height;
                }
                info->m_video_info_aux[i].bitrate =
                    headerMPEG4.moov.trak[buferVC[i].buf->idTrak]->mdia.minf.stbl.stsd.table->esds.avgBitrate;

                info->m_video_info_aux[i].duration = ((float)(vm_var64s)(headerMPEG4.moov.trak[buferVC[i].buf->idTrak]->mdia.mdhd.duration) /
                                 (float)headerMPEG4.moov.trak[buferVC[i].buf->idTrak]->mdia.mdhd.time_scale);

                info->m_video_info_aux[i].framerate =
                    (headerMPEG4.moov.trak[buferVC[i].buf->idTrak]->mdia.minf.stbl.stsz.total_entries) /
                    info->m_video_info_aux[i].duration;

                switch ( headerMPEG4.moov.trak[buferVC[i].buf->idTrak]->mdia.minf.stbl.stsd.table->esds.objectTypeID )
                {
                    case 0x00:
                        info->m_video_info_aux[i].stream_type = UMC::UNDEF_VIDEO;
                    break;
                    case 0x6a:
                        info->m_video_info_aux[i].stream_type = UMC::MPEG1_VIDEO;
                        break;
                    case 0x60:
                    case 0x61:
                    case 0x62:
                        info->m_video_info_aux[i].stream_type = UMC::MPEG2_VIDEO;
                        break;
                    case 0x20:
                        info->m_video_info_aux[i].stream_type = UMC::MPEG4_VIDEO;
                        info->m_video_info_aux[i].stream_subtype = UMC::MPEG4_VIDEO_QTIME;                      break;
                    case 0xf1:
                        info->m_video_info_aux[i].stream_type = UMC::H264_VIDEO;
                        break;
                    case 0xf2:
                        info->m_video_info_aux[i].stream_type = UMC::H263_VIDEO;
                        break;
                    case 0xf3:
                        info->m_video_info_aux[i].stream_type = UMC::H261_VIDEO;
                        break;
                    default:
                        info->m_video_info_aux[i].stream_type = UMC::UNDEF_VIDEO;
                        break;
                }// switch
            }// for
        }// if
    }// if
    if ( (total_audio > 0) && (m_splitter_flags & AUDIO_SPLITTER) )
    {
        info->number_audio_tracks = total_audio;
//      info->m_audio_info.stream_type_ex = AAC_FMT_RAW;
        if( total_audio > 1 )
        {
            if( info->m_audio_info_aux )
            {
                ippsFree(info->m_audio_info_aux);
            }
            unsigned int buff_size = total_audio * sizeof(sAudioStreamInfo);
            info->m_audio_info_aux = (sAudioStreamInfo*)ippsMalloc_8u(buff_size);
            memset(info->m_audio_info_aux, 0, buff_size);
        }

        //zero audio and video track info
        ptr = 0; i = 0;

        if ( headerMPEG4.moov.trak[buferAD[i].buf->idTrak]->mdia.minf.stbl.stsd.table->esds.decoderConfigLen )
        {
            bs.nBit_offset = 32;
            bs.pCurrent_dword = bs.pBuffer = (unsigned int*) headerMPEG4.moov.trak[buferAD[i].buf->idTrak]->mdia.minf.stbl.stsd.table->esds.decoderConfig;
            dec_audio_specific_config(&audio_config_data,&bs);

            info->m_audio_info.stream_type = ObjectIDType(audio_config_data.audioObjectType);
            info->m_audio_info.sample_frequency = get_sampling_frequency(&audio_config_data);
            info->m_audio_info.channels = get_channels_number(&audio_config_data);
        }
/*
        if ( headerMPEG4.moov.trak[buferAD[i].buf->idTrak]->mdia.minf.stbl.stsd.table->esds.decoderConfigLen )
        {
            GetBits(&temp,
                    5,
                    &ptr,
                    headerMPEG4.moov.trak[buferAD[i].buf->idTrak]->mdia.minf.stbl.stsd.table->esds.decoderConfig);
            info->m_audio_info.stream_type = ObjectIDType(temp);

            GetBits(&temp,
                    4,
                    &ptr,