Add ffmpeg code into InputStream and create option for it in the cmake
configuration
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jfmcarreira committed
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@@ -78,14 +78,14 @@ QString InputStream::supportedReadFormats()
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QString InputStream::supportedWriteFormats()
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{
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QString formats;
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formats = "*.bmp " // Windows Bitmap
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"*.jpg " // Joint Photographic Experts Group
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"*.jpeg " // Joint Photographic Experts Group
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"*.png " // Portable Network Graphics
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;
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QString formats;
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formats = "*.bmp " // Windows Bitmap
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"*.jpg "// Joint Photographic Experts Group
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"*.jpeg "// Joint Photographic Experts Group
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"*.png "// Portable Network Graphics
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;
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return formats;
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return formats;
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}
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QStringList InputStream::supportedReadFormatsList()
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@@ -98,18 +98,11 @@ QStringList InputStream::supportedReadFormatsList()
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QStringList InputStream::supportedWriteFormatsList()
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{
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QStringList formats;
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formats << "Windows Bitmap (*.bmp)"
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<< "Joint Photographic Experts Group (*.jpg *.jpeg)"
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<< "Portable Network Graphics (*.png)"
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<< "Portable Bitmap (*.pbm)"
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<< "Portable Graymap (*.pgm)"
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<< "Portable Pixmap (*.ppm)"
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<< "Tagged Image File Format (*.tiff)"
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<< "X11 Bitmap (*.xbm)"
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<< "X11 Pixmap (*.xpm)";
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QStringList formats;
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formats << "Windows Bitmap (*.bmp)" << "Joint Photographic Experts Group (*.jpg *.jpeg)" << "Portable Network Graphics (*.png)" << "Portable Bitmap (*.pbm)"
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<< "Portable Graymap (*.pgm)" << "Portable Pixmap (*.ppm)" << "Tagged Image File Format (*.tiff)" << "X11 Bitmap (*.xbm)" << "X11 Pixmap (*.xpm)";
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return formats;
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return formats;
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}
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QStringList InputStream::supportedPixelFormatList()
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@@ -121,8 +114,8 @@ QStringList InputStream::supportedPixelFormatList()
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Bool InputStream::needFormatDialog( QString filename )
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{
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QString fileExtension = QFileInfo(filename).completeSuffix();
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if( !fileExtension.compare( QString("yuv") ) )
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QString fileExtension = QFileInfo( filename ).completeSuffix();
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if( !fileExtension.compare( QString( "yuv" ) ) )
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{
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return true;
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}
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@@ -132,6 +125,174 @@ Bool InputStream::needFormatDialog( QString filename )
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}
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}
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#ifdef USE_FFMPEG
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static int open_codec_context( int *stream_idx, AVFormatContext *fmt_ctx, enum AVMediaType type )
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{
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int ret;
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AVStream *st;
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AVCodecContext *dec_ctx = NULL;
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AVCodec *dec = NULL;
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ret = av_find_best_stream( fmt_ctx, type, -1, -1, NULL, 0 );
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if( ret < 0 )
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{
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return ret;
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}
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else
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{
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*stream_idx = ret;
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st = fmt_ctx->streams[*stream_idx];
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/* find decoder for the stream */
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dec_ctx = st->codec;
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dec = avcodec_find_decoder( dec_ctx->codec_id );
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if( !dec )
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{
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printf( "Failed to find %s codec\n", av_get_media_type_string( type ) );
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return ret;
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}
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if( ( ret = avcodec_open2( dec_ctx, dec, NULL ) ) < 0 )
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{
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printf( "Failed to open %s codec\n", av_get_media_type_string( type ) );
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return ret;
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}
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}
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return 0;
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}
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Void closeAvFormat( LibAvContext avContext )
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{
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if( avContext.video_dec_ctx )
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avcodec_close( avContext.video_dec_ctx );
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avformat_close_input( &avContext.fmt_ctx );
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av_free( avContext.frame );
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av_free( avContext.video_dst_data[0] );
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}
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Bool initAvFormat( LibAvContext avContext, QString filename, UInt width, UInt height )
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{
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Bool bRet = true;
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int ret = 0;
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avContext.video_stream_idx = -1;
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char *src_filename = filename.toLocal8Bit().data();
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FILE *video_dst_file = NULL;
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int video_frame_count = 0;
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int audio_frame_count = 0;
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/* register all formats and codecs */
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av_register_all();
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/* open input file, and allocate format context */
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if( avformat_open_input( &avContext.fmt_ctx, src_filename, NULL, NULL ) < 0 )
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{
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qDebug( ) << " Could not open source file %s !!!" << filename << endl;
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return false;
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}
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/* retrieve stream information */
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if( avformat_find_stream_info( avContext.fmt_ctx, NULL ) < 0 )
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{
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qDebug( ) << " Could not find stream information !!!" << endl;
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return false;
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}
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if( open_codec_context( &avContext.video_stream_idx, avContext.fmt_ctx, AVMEDIA_TYPE_VIDEO ) >= 0 )
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{
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avContext.video_stream = avContext.fmt_ctx->streams[avContext.video_stream_idx];
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avContext.video_dec_ctx = avContext.video_stream->codec;
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/* allocate image where the decoded image will be put */
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ret = av_image_alloc( avContext.video_dst_data, avContext.video_dst_linesize, avContext.video_dec_ctx->width, avContext.video_dec_ctx->height,
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avContext.video_dec_ctx->pix_fmt, 1 );
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if( ret < 0 )
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{
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qDebug( ) << " Could not allocate raw video buffer !!!" << endl;
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closeAvFormat( avContext );
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return false;
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}
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avContext.video_dst_bufsize = ret;
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}
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/* dump input information to stderr */
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//av_dump_format(fmt_ctx, 0, src_filename, 0);
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if( !avContext.video_stream )
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{
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qDebug( ) << " Could not find audio or video stream in the input, aborting !!!" << endl;
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bRet = false;
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closeAvFormat( avContext );
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return false;
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}
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avContext.frame = avcodec_alloc_frame();
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if( !avContext.frame )
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{
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qDebug( ) << " Could not allocate frame !!!" << endl;
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ret = AVERROR( ENOMEM );
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closeAvFormat( avContext );
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return false;
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}
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/* initialize packet, set data to NULL, let the demuxer fill it */
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av_init_packet( &avContext.pkt );
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avContext.pkt.data = NULL;
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avContext.pkt.size = 0;
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return true;
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}
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Bool decodeAvFormat( LibAvContext avContext )
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{
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Int got_frame;
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int ret;
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/* read frames from the file */
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if( av_read_frame( avContext.fmt_ctx, &avContext.pkt ) >= 0 )
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{
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if( avContext.pkt.stream_index == avContext.video_stream_idx )
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{
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/* decode video frame */
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ret = avcodec_decode_video2( avContext.video_dec_ctx, avContext.frame, &got_frame, &avContext.pkt );
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if( ret < 0 )
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{
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fprintf( stderr, "Error decoding video frame\n" );
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return false;
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}
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if( got_frame )
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{
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/* copy decoded frame to destination buffer:
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* this is required since rawvideo expects non aligned data */
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av_image_copy( avContext.video_dst_data, avContext.video_dst_linesize, ( const uint8_t ** )( avContext.frame->data ), avContext.frame->linesize,
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avContext.video_dec_ctx->pix_fmt, avContext.video_dec_ctx->width, avContext.video_dec_ctx->height );
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/* write to rawvideo file */
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//fwrite( avContext.video_dst_data[0], 1, avContext.video_dst_bufsize, avContext.video_dst_file );
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}
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}
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av_free_packet( &avContext.pkt );
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}
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// /* flush cached frames */
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// avContext.pkt.data = NULL;
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// avContext.pkt.size = 0;
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// do
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// {
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// decode_packet( &got_frame, 1 );
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// }
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// while( got_frame );
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true;
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}
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#endif
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Void InputStream::init( QString filename, UInt width, UInt height, Int input_format )
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{
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@@ -302,21 +463,21 @@ Void InputStream::readFrame()
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if( bytes_read != ( m_uiWidth * m_uiHeight ) )
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{
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m_iErrorStatus = READING;
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qDebug() << " Reading error !!!" << endl;
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qDebug( ) << " Reading error !!!" << endl;
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return;
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}
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bytes_read = fread( &( m_pppcInputPel[1][0][0] ), sizeof(Pel), m_uiWidth * m_uiHeight / 4, m_pFile );
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if( bytes_read != ( m_uiWidth * m_uiHeight / 4 ) )
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{
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m_iErrorStatus = READING;
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qDebug() << " Reading error !!!" << endl;
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qDebug( ) << " Reading error !!!" << endl;
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return;
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}
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bytes_read = fread( &( m_pppcInputPel[2][0][0] ), sizeof(Pel), m_uiWidth * m_uiHeight / 4, m_pFile );
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if( bytes_read != ( m_uiWidth * m_uiHeight / 4 ) )
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{
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m_iErrorStatus = READING;
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qDebug() << " Reading error !!!" << endl;
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qDebug( ) << " Reading error !!!" << endl;
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return;
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}
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YUV420toRGB();
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@@ -328,7 +489,7 @@ Void InputStream::readFrame()
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Bool InputStream::writeFrame( const QString& filename )
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{
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getFrameQImage().save(filename);
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getFrameQImage().save( filename );
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return true;
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}
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