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Diffstat (limited to 'src/barcode/barcode_v4l.h')
| -rw-r--r-- | src/barcode/barcode_v4l.h | 184 |
1 files changed, 184 insertions, 0 deletions
diff --git a/src/barcode/barcode_v4l.h b/src/barcode/barcode_v4l.h new file mode 100644 index 0000000..f0cde90 --- /dev/null +++ b/src/barcode/barcode_v4l.h @@ -0,0 +1,184 @@ +/*************************************************************************** + copyright : (C) 2007 by Sebastian Held + email : [email protected] + ***************************************************************************/ + +/*************************************************************************** + * * + * This program is free software; you can redistribute it and/or modify * + * it under the terms of version 2 of the GNU General Public License as * + * published by the Free Software Foundation; * + * * + ***************************************************************************/ + +#ifndef BARCODE_V4L_H +#define BARCODE_V4L_H + +#define GETELEM(array,index,default) \ + (index < sizeof(array)/sizeof(array[0]) ? array[index] : default) + +/* + * Taken from xawtv-3.5.9 source 8/15/01 by George Staikos <[email protected]> + */ +#ifdef __STRICT_ANSI__ +#undef __STRICT_ANSI__ +#define FOO__STRICT_ANSI__ +#endif +#include <asm/types.h> +#ifdef FOO__STRICT_ANSI__ +#define __STRICT_ANSI__ 1 +#undef FOO__STRICT_ANSI__ +#endif + +//#include <linux/videodev2.h> +#include <linux/videodev.h> + +#include <qstring.h> +#include <qimage.h> + +namespace barcodeRecognition { + +struct ng_video_fmt { + unsigned int fmtid; /* VIDEO_* */ + unsigned int width; + unsigned int height; + unsigned int bytesperline; /* zero for compressed formats */ +}; +enum { CAN_OVERLAY=1, CAN_CAPTURE=2, CAN_TUNE=4, NEEDS_CHROMAKEY=8 }; +enum { VIDEO_NONE=0, VIDEO_RGB08, VIDEO_GRAY, VIDEO_RGB15_LE, VIDEO_RGB16_LE, + VIDEO_RGB15_BE, VIDEO_RGB16_BE, VIDEO_BGR24, VIDEO_BGR32, VIDEO_RGB24, + VIDEO_RGB32, VIDEO_LUT2, VIDEO_LUT4, VIDEO_YUYV, VIDEO_YUV422P, + VIDEO_YUV420P, VIDEO_MJPEG, VIDEO_JPEG, VIDEO_UYVY, VIDEO_FMT_COUNT }; +extern const char *device_cap[]; +extern const unsigned int ng_vfmt_to_depth[]; +extern const char* ng_vfmt_to_desc[]; + +/* lookup tables */ +#define CLIP 320 +extern unsigned int ng_yuv_gray[256]; +extern unsigned int ng_yuv_red[256]; +extern unsigned int ng_yuv_blue[256]; +extern unsigned int ng_yuv_g1[256]; +extern unsigned int ng_yuv_g2[256]; +extern unsigned int ng_clip[256 + 2 * CLIP]; +void ng_color_yuv2rgb_init(); + + + +class video_converter +{ +public: + video_converter() {;} + virtual ~video_converter() {;} + virtual void init( ng_video_fmt* ) {;} + virtual void exit() {;} + virtual void frame( QByteArray*, const QByteArray*, ng_video_fmt ) {;} + int fmtid_in() {return m_fmtid_in;} + int fmtid_out() {return m_fmtid_out;} +protected: + int m_fmtid_in, m_fmtid_out; +}; + +class yuv422p_to_rgb24 : public video_converter +{ +public: + yuv422p_to_rgb24() {m_fmtid_in=VIDEO_YUV422P; m_fmtid_out=VIDEO_RGB24;} + virtual void frame( QByteArray *, const QByteArray *, ng_video_fmt ) {;} +}; +class yuv422_to_rgb24 : public video_converter +{ +public: + yuv422_to_rgb24() {m_fmtid_in=VIDEO_YUYV; m_fmtid_out=VIDEO_RGB24;} + virtual void frame( QByteArray *, const QByteArray *, ng_video_fmt ) {;} +}; +class yuv420p_to_rgb24 : public video_converter +{ +public: + yuv420p_to_rgb24() {m_fmtid_in=VIDEO_YUV420P; m_fmtid_out=VIDEO_RGB24;} + virtual void frame( QByteArray *, const QByteArray *, ng_video_fmt ); +}; + +class ng_vid_driver +{ +public: + static ng_vid_driver *createDriver( QString device ); + static int xioctl( int fd, int cmd, void *arg ); + + /* open/close */ + virtual bool open2( QString device ) = 0; + virtual void close() = 0; + + /* attributes */ + virtual QString get_devname() {return m_name;} + virtual int capabilities() = 0; + + /* capture */ + virtual bool setformat( ng_video_fmt *fmt ) = 0; + virtual QByteArray* getimage2() = 0; /* single image */ + + // video converter + static void register_video_converter( video_converter *conv ); + static video_converter *find_video_converter( int out, int in ); + +protected: + QString m_name; + static QPtrList<video_converter> m_converter; +}; + + +class barcode_v4l +{ +public: + barcode_v4l(); + ~barcode_v4l(); + QImage grab_one2(); + bool isOpen(); + +protected: + bool grab_init(); + + QString m_devname; + int m_grab_width, m_grab_height; + ng_vid_driver *m_drv; + ng_video_fmt m_fmt, m_fmt_drv; + video_converter *m_conv; + +}; + + +class ng_vid_driver_v4l : public ng_vid_driver +{ +public: + ng_vid_driver_v4l(); + + /* open/close */ + //virtual bool open( QString device ); + virtual bool open2( QString device ); + virtual void close(); + + /* attributes */ + virtual int capabilities(); + + /* capture */ + virtual bool setformat( ng_video_fmt *fmt ); + //virtual ng_video_buf* getimage(); /* single image */ + virtual QByteArray* getimage2(); /* single image */ + +protected: + bool read_setformat( ng_video_fmt *fmt ); + QByteArray* read_getframe2(); + void *m_drv; + int m_fd; + video_capability m_capability; + video_picture m_pict; + video_window m_win; + + /* capture */ + bool m_use_read; + ng_video_fmt m_fmt; + + unsigned short format2palette[VIDEO_FMT_COUNT]; +}; + +} // namespace +#endif |