v01

thirdparty/Pangolin/include/pangolin/video/drivers/ffmpeg.h

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+/* This file is part of the Pangolin Project.
+ * http://github.com/stevenlovegrove/Pangolin
+ *
+ * Copyright (c) 2011 Steven Lovegrove
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#pragma once
+
+#include <pangolin/pangolin.h>
+#include <pangolin/video/video.h>
+
+extern "C"
+{
+
+// HACK for some versions of FFMPEG
+#ifndef INT64_C
+#define INT64_C(c) (c ## LL)
+#define UINT64_C(c) (c ## ULL)
+#endif
+
+#include <libavformat/avformat.h>
+#include <libswscale/swscale.h>
+#include <libavutil/pixdesc.h>
+#include <libavcodec/avcodec.h>
+}
+
+#ifndef HAVE_FFMPEG_AVPIXELFORMAT
+#  define AVPixelFormat PixelFormat
+#endif
+
+namespace pangolin
+{
+
+class PANGOLIN_EXPORT FfmpegVideo : public VideoInterface
+{
+public:
+    FfmpegVideo(const std::string filename, const std::string fmtout = "RGB24", const std::string codec_hint = "", bool dump_info = false, int user_video_stream = -1, ImageDim size = ImageDim(0,0));
+    ~FfmpegVideo();
+    
+    //! Implement VideoInput::Start()
+    void Start();
+    
+    //! Implement VideoInput::Stop()
+    void Stop();
+
+    //! Implement VideoInput::SizeBytes()
+    size_t SizeBytes() const;
+
+    //! Implement VideoInput::Streams()
+    const std::vector<StreamInfo>& Streams() const;
+    
+    //! Implement VideoInput::GrabNext()
+    bool GrabNext( unsigned char* image, bool wait = true );
+    
+    //! Implement VideoInput::GrabNewest()
+    bool GrabNewest( unsigned char* image, bool wait = true );
+    
+protected:
+    void InitUrl(const std::string filename, const std::string fmtout = "RGB24", const std::string codec_hint = "", bool dump_info = false , int user_video_stream = -1, ImageDim size= ImageDim(0,0));
+    
+    std::vector<StreamInfo> streams;
+    
+    SwsContext      *img_convert_ctx;
+    AVFormatContext *pFormatCtx;
+    int             videoStream;
+    int             audioStream;
+    AVCodecContext  *pVidCodecCtx;
+    AVCodecContext  *pAudCodecCtx;
+    AVCodec         *pVidCodec;
+    AVCodec         *pAudCodec;
+    AVFrame         *pFrame;
+    AVFrame         *pFrameOut;
+    AVPacket        packet;
+    int             numBytesOut;
+    uint8_t         *buffer;
+    AVPixelFormat     fmtout;
+};
+
+enum FfmpegMethod
+{
+    FFMPEG_FAST_BILINEAR =    1,
+    FFMPEG_BILINEAR      =    2,
+    FFMPEG_BICUBIC       =    4,
+    FFMPEG_X             =    8,
+    FFMPEG_POINT         = 0x10,
+    FFMPEG_AREA          = 0x20,
+    FFMPEG_BICUBLIN      = 0x40,
+    FFMPEG_GAUSS         = 0x80,
+    FFMPEG_SINC          =0x100,
+    FFMPEG_LANCZOS       =0x200,
+    FFMPEG_SPLINE        =0x400
+};
+
+class PANGOLIN_EXPORT FfmpegConverter : public VideoInterface
+{
+public:
+    FfmpegConverter(std::unique_ptr<VideoInterface>& videoin, const std::string pixelfmtout = "RGB24", FfmpegMethod method = FFMPEG_POINT);
+    ~FfmpegConverter();
+    
+    //! Implement VideoInput::Start()
+    void Start();
+    
+    //! Implement VideoInput::Stop()
+    void Stop();
+
+    //! Implement VideoInput::SizeBytes()
+    size_t SizeBytes() const;
+
+    //! Implement VideoInput::Streams()
+    const std::vector<StreamInfo>& Streams() const;
+    
+    //! Implement VideoInput::GrabNext()
+    bool GrabNext( unsigned char* image, bool wait = true );
+    
+    //! Implement VideoInput::GrabNewest()
+    bool GrabNewest( unsigned char* image, bool wait = true );
+    
+protected:
+    std::vector<StreamInfo> streams;
+    
+    struct ConvertContext
+    {
+        SwsContext*     img_convert_ctx;
+        AVPixelFormat   fmtsrc;
+        AVPixelFormat   fmtdst;
+        AVFrame*        avsrc;
+        AVFrame*        avdst; 
+        size_t          w,h;
+        size_t          src_buffer_offset;
+        size_t          dst_buffer_offset;
+        
+        void convert(const unsigned char * src, unsigned char* dst);
+        
+    };
+    
+    std::unique_ptr<VideoInterface> videoin;
+    std::unique_ptr<unsigned char[]> input_buffer;
+
+    std::vector<ConvertContext> converters;
+    //size_t src_buffer_size;
+    size_t dst_buffer_size;
+};
+
+#if (LIBAVFORMAT_VERSION_MAJOR > 55) || ((LIBAVFORMAT_VERSION_MAJOR == 55) && (LIBAVFORMAT_VERSION_MINOR >= 7))
+typedef AVCodecID CodecID;
+#endif
+
+// Forward declaration
+class FfmpegVideoOutputStream;
+
+class PANGOLIN_EXPORT FfmpegVideoOutput
+    : public VideoOutputInterface
+{
+    friend class FfmpegVideoOutputStream;
+public:
+    FfmpegVideoOutput( const std::string& filename, int base_frame_rate, int bit_rate, bool flip = false );
+    ~FfmpegVideoOutput();
+
+    const std::vector<StreamInfo>& Streams() const override;
+
+    void SetStreams(const std::vector<StreamInfo>& streams, const std::string& uri, const picojson::value& properties) override;
+
+    int WriteStreams(const unsigned char* data, const picojson::value& frame_properties) override;
+
+    bool IsPipe() const override;
+    
+protected:
+    void Initialise(std::string filename);
+    void StartStream();
+    void Close();
+    
+    std::string filename;
+    bool started;
+    AVFormatContext *oc;
+    std::vector<FfmpegVideoOutputStream*> streams;
+    std::vector<StreamInfo> strs;
+
+    int frame_count;
+    
+    int base_frame_rate;
+    int bit_rate;
+    bool is_pipe;
+    bool flip;
+};
+
+}