#ifndef _ZL_V4L_ #define _ZL_V4L_ #include "zl/config.h" #include #include #include // FIXME // #define HAVE_V4L1 #define HAVE_V4L2 #ifdef HAVE_V4L2 #include #else /* Doesn't matter, as long as they are unique. */ #define V4L2_PIX_FMT_YUV420 1 #define V4L2_PIX_FMT_RGB24 2 #define V4L2_PIX_FMT_RGB32 3 #define V4L2_PIX_FMT_YUYV 4 #define V4L2_PIX_FMT_UYVY 5 #define V4L2_PIX_FMT_PAC207 6 #define v4l2_fourcc(...) 7 #endif #ifdef HAVE_V4L1 #ifdef HAVE_LIBV4L1_VIDEODEV_H # include #else //#warning trying to use deprecated V4L-1 API # include #endif #endif /* This was on 8 in Yves' code. Not sure why. 2 is much better, so I leave it configurable, but default set to 2. */ #define ZL_V4L_MAX_BUFFERS 8 #define ZL_V4L_DEVICENO 0 #define ZL_V4L_NBUF 2 #define ZL_V4L_COMPOSITEIN 1 #define ZL_V4L_MAX_INPUT 16 #define ZL_V4L_MAX_NORM 16 #define ZL_V4L_MAX_FORMAT 32 #define ZL_V4L_MAX_CTRL 32 struct zl_v4l { unsigned long x_format; // 0 means autodetect unsigned long x_channel; unsigned long x_norm; bool x_initialized; bool x_open_retry; bool x_start_thread; // start thread on re-open unsigned int x_width; unsigned int x_height; int x_freq; int x_tvfd; int x_frame_wr; // capture thread writes this frame int x_frame_rd; // main thread reads this frame int x_skipnext; int x_mytopmargin, x_mybottommargin; int x_myleftmargin, x_myrightmargin; int x_debug; /* V4L only uses a single mapped region which has 2 halves. V4L2 uses separately mapped buffers. */ int x_nbbuffers_wanted; int x_nbbuffers; unsigned char *x_buf[ZL_V4L_MAX_BUFFERS]; //int x_pdp_image_type; pthread_t x_thread_id; int x_continue_thread; sem_t x_frame_ready_sem; int x_curinput; int x_curstandard; int x_curformat; int x_fps_num; int x_fps_den; /* FIXME: Against ZL principles to keep this external pointer here, so make sure it is an object with infinite extent. */ const char *x_device; /* This uses V4L2 format descs, also for the V4L1 */ unsigned long fourcc; enum { #ifdef HAVE_V4L1 V4L1, #endif #ifdef HAVE_V4L2 V4L2, #endif } x_v4l_api; union { #ifdef HAVE_V4L1 struct { int palette; struct video_tuner tuner; struct video_picture picture; struct video_buffer buffer; struct video_capability cap; struct video_channel channel; struct video_audio audio; struct video_mbuf mbuf; struct video_mmap mmap[ZL_V4L_NBUF]; struct video_window win; } v4l1; #endif #ifdef HAVE_V4L2 struct { int ninputs; int nstandards; int nfmtdescs; struct v4l2_capability capability; struct v4l2_input input[ZL_V4L_MAX_INPUT]; struct v4l2_standard standard[ZL_V4L_MAX_NORM]; struct v4l2_fmtdesc fmtdesc[ZL_V4L_MAX_FORMAT]; struct v4l2_streamparm streamparam; // struct v4l2_queryctrl queryctrl[ZL_V4L_MAX_CTRL]; // struct v4l2_queryctrl queryctrl_priv[ZL_V4L_MAX_CTRL]; struct v4l2_buffer buffer[ZL_V4L_MAX_BUFFERS]; struct v4l2_format format; struct v4l2_requestbuffers requestbuffers; } v4l2; #endif } x_api; }; int zl_v4l_close(struct zl_v4l *x); void zl_v4l_close_error(struct zl_v4l *x); void zl_v4l_control(struct zl_v4l *x, int id, int value); void zl_v4l_pwc_agc(struct zl_v4l *x, float gain); void zl_v4l_open(struct zl_v4l *x, const char *name, bool start_thread); void zl_v4l_reopen(struct zl_v4l *x); void zl_v4l_open_if_necessary(struct zl_v4l *x); void zl_v4l_input(struct zl_v4l *x, int inpt); void zl_v4l_standard(struct zl_v4l *x, int standrd); void zl_v4l_freq(struct zl_v4l *x, int freq /* 1/16th of MHz */); void zl_v4l_next(struct zl_v4l *x, unsigned char **newimage, int block); void zl_v4l_get_format(struct zl_v4l *x, unsigned int *fourcc, unsigned int *width, unsigned int *height); void zl_v4l_set_dim(struct zl_v4l *x, unsigned int w, unsigned int h); void zl_v4l_set_norm(struct zl_v4l *x, unsigned long norm); void zl_v4l_set_format(struct zl_v4l *x, unsigned long format); void zl_v4l_set_channel(struct zl_v4l *x, unsigned long channel); void zl_v4l_set_fps(struct zl_v4l *x, int num, int den); void zl_v4l_init(struct zl_v4l *x, bool start_thread); const char *zl_v4l_card(struct zl_v4l *x); const char *zl_v4l_control_name(int id); /* Useful for abstracting over symbolic names. */ #define ZL_V4L_CTRL_LIST \ ZL_V4L_CTRL(BRIGHTNESS) \ ZL_V4L_CTRL(CONTRAST) \ ZL_V4L_CTRL(SATURATION) \ ZL_V4L_CTRL(HUE) \ ZL_V4L_CTRL(AUDIO_VOLUME) \ ZL_V4L_CTRL(AUDIO_BALANCE) \ ZL_V4L_CTRL(AUDIO_BASS) \ ZL_V4L_CTRL(AUDIO_TREBLE) \ ZL_V4L_CTRL(AUDIO_MUTE) \ ZL_V4L_CTRL(AUDIO_LOUDNESS) \ ZL_V4L_CTRL(BLACK_LEVEL) \ ZL_V4L_CTRL(AUTO_WHITE_BALANCE) \ ZL_V4L_CTRL(DO_WHITE_BALANCE) \ ZL_V4L_CTRL(RED_BALANCE) \ ZL_V4L_CTRL(BLUE_BALANCE) \ ZL_V4L_CTRL(GAMMA) \ ZL_V4L_CTRL(EXPOSURE) \ ZL_V4L_CTRL(AUTOGAIN) \ ZL_V4L_CTRL(GAIN) \ ZL_V4L_CTRL(HFLIP) \ ZL_V4L_CTRL(VFLIP) \ ZL_V4L_CTRL(POWER_LINE_FREQUENCY) \ ZL_V4L_CTRL(HUE_AUTO) \ ZL_V4L_CTRL(WHITE_BALANCE_TEMPERATURE) \ ZL_V4L_CTRL(SHARPNESS) \ ZL_V4L_CTRL(BACKLIGHT_COMPENSATION) \ ZL_V4L_CTRL(CHROMA_AGC) \ ZL_V4L_CTRL(COLOR_KILLER) \ ZL_V4L_CTRL(COLORFX) \ ZL_V4L_CTRL(AUTOBRIGHTNESS) \ ZL_V4L_CTRL(BAND_STOP_FILTER) \ ZL_V4L_CTRL(EXPOSURE_AUTO) \ ZL_V4L_CTRL(EXPOSURE_ABSOLUTE) \ ZL_V4L_CTRL(EXPOSURE_AUTO_PRIORITY) \ ZL_V4L_CTRL(PAN_RELATIVE) \ ZL_V4L_CTRL(TILT_RELATIVE) \ ZL_V4L_CTRL(PAN_RESET) \ ZL_V4L_CTRL(TILT_RESET) \ ZL_V4L_CTRL(PAN_ABSOLUTE) \ ZL_V4L_CTRL(TILT_ABSOLUTE) \ ZL_V4L_CTRL(FOCUS_ABSOLUTE) \ ZL_V4L_CTRL(FOCUS_RELATIVE) \ ZL_V4L_CTRL(FOCUS_AUTO) \ ZL_V4L_CTRL(ZOOM_ABSOLUTE) \ ZL_V4L_CTRL(ZOOM_RELATIVE) \ ZL_V4L_CTRL(ZOOM_CONTINUOUS) \ ZL_V4L_CTRL(PRIVACY) #define ZL_V4L_CTRL_LIST_REMOVED \ ZL_V4L_CTRL(HCENTER) \ ZL_V4L_CTRL(VCENTER) \ struct zl_v4l *zl_v4l_new(bool start_thread); #endif