/***************************************************************************** * video_output.h : video output thread * (c)1999 VideoLAN ***************************************************************************** * This module describes the programming interface for video output threads. * It includes functions allowing to open a new thread, send pictures to a * thread, and destroy a previously oppenned video output thread. *****************************************************************************/ /***************************************************************************** * vout_yuv_convert_t: YUV convertion function ***************************************************************************** * This is the prototype common to all convertion functions. The type of p_pic * will change depending of the screen depth treated. * Parameters: * p_vout video output thread * p_pic picture address * p_y, p_u, p_v Y,U,V samples addresses * i_width, i_height Y samples extension * i_pic_width, i_pic_height picture extension * i_pic_line_width picture total line width * i_matrix_coefficients matrix coefficients * Picture width and source dimensions must be multiples of 16. *****************************************************************************/ typedef void (vout_yuv_convert_t)( p_vout_thread_t p_vout, void *p_pic, yuv_data_t *p_y, yuv_data_t *p_u, yuv_data_t *p_v, int i_width, int i_height, int i_pic_width, int i_pic_height, int i_pic_line_width, int i_matrix_coefficients ); /***************************************************************************** * vout_yuv_t: pre-calculated YUV convertion tables ***************************************************************************** * These tables are used by convertion and scaling functions. *****************************************************************************/ typedef struct vout_yuv_s { /* Convertion functions */ vout_yuv_convert_t * p_Convert420; /* YUV 4:2:0 converter */ vout_yuv_convert_t * p_Convert422; /* YUV 4:2:2 converter */ vout_yuv_convert_t * p_Convert444; /* YUV 4:4:4 converter */ /* Pre-calculated convertion tables */ void * p_base; /* base for all conversion tables */ union { u8 * p_gray8; /* gray 8 bits table */ u16 * p_gray16; /* gray 16 bits table */ u32 * p_gray32; /* gray 32 bits table */ u8 * p_rgb8; /* RGB 8 bits table */ u16 * p_rgb16; /* RGB 16 bits table */ u32 * p_rgb32; /* RGB 32 bits table */ } yuv; /* Temporary convertion buffer and offset array */ void * p_buffer; /* convertion buffer */ int * p_offset; /* offset array */ } vout_yuv_t; /***************************************************************************** * vout_buffer_t: rendering buffer ***************************************************************************** * This structure store informations about a buffer. Buffers are not completely * cleared between displays, and modified areas need to be stored. *****************************************************************************/ typedef struct vout_buffer_s { /* Picture area */ int i_pic_x, i_pic_y; /* picture position */ int i_pic_width, i_pic_height; /* picture extension */ /* Other areas - only vertical extensions of areas are stored */ int i_areas; /* number of areas */ int pi_area_begin[VOUT_MAX_AREAS]; /* beginning of area */ int pi_area_end[VOUT_MAX_AREAS]; /* end of area */ /* Picture data */ byte_t * p_data; /* memory address */ } vout_buffer_t; /***************************************************************************** * vout_thread_t: video output thread descriptor ***************************************************************************** * Any independant video output device, such as an X11 window or a GGI device, * is represented by a video output thread, and described using the following * structure. *****************************************************************************/ typedef int (vout_sys_create_t) ( p_vout_thread_t p_vout, char *psz_display, int i_root_window ); typedef int (vout_sys_init_t) ( p_vout_thread_t p_vout ); typedef void (vout_sys_end_t) ( p_vout_thread_t p_vout ); typedef void (vout_sys_destroy_t) ( p_vout_thread_t p_vout ); typedef int (vout_sys_manage_t) ( p_vout_thread_t p_vout ); typedef void (vout_sys_display_t) ( p_vout_thread_t p_vout ); typedef void (vout_set_palette_t) ( p_vout_thread_t p_vout, u16 *red, u16 *green, u16 *blue, u16 *transp ); typedef struct vout_thread_s { /* Thread properties and lock */ boolean_t b_die; /* `die' flag */ boolean_t b_error; /* `error' flag */ boolean_t b_active; /* `active' flag */ vlc_thread_t thread_id; /* id for pthread functions */ vlc_mutex_t picture_lock; /* picture heap lock */ vlc_mutex_t subpicture_lock; /* subpicture heap lock */ vlc_mutex_t change_lock; /* thread change lock */ int * pi_status; /* temporary status flag */ p_vout_sys_t p_sys; /* system output method */ /* Current display properties */ u16 i_changes; /* changes made to the thread */ int i_width; /* current output method width */ int i_height; /* current output method height */ int i_bytes_per_line; /* bytes per line (incl. virtual) */ int i_screen_depth; /* significant bpp: 8, 15, 16 or 24 */ int i_bytes_per_pixel;/* real screen depth: 1, 2, 3 or 4 */ float f_gamma; /* gamma */ /* Color masks and shifts in RGB mode - masks are set by system * initialization, shifts are calculated. A pixel color value can be * obtained using the formula ((value >> rshift) << lshift) */ u32 i_red_mask; /* red mask */ u32 i_green_mask; /* green mask */ u32 i_blue_mask; /* blue mask */ int i_red_lshift, i_red_rshift; /* red shifts */ int i_green_lshift, i_green_rshift; /* green shifts */ int i_blue_lshift, i_blue_rshift; /* blue shifts */ /* Useful pre-calculated pixel values - these are not supposed to be * accurate values, but rather values looking nice, given their usage. */ u32 i_white_pixel; /* white */ u32 i_black_pixel; /* black */ u32 i_gray_pixel; /* gray */ u32 i_blue_pixel; /* blue */ /* Plugins */ void * p_vout_plugin; /* video output plugin */ vout_sys_create_t * p_sys_create; /* allocate output method */ vout_sys_init_t * p_sys_init; /* initialize output method */ vout_sys_end_t * p_sys_end; /* terminate output method */ vout_sys_destroy_t * p_sys_destroy; /* destroy output method */ vout_sys_manage_t * p_sys_manage; /* handle events */ vout_sys_display_t * p_sys_display; /* display rendered image */ vout_set_palette_t * p_set_palette; /* sets 8bpp palette */ /* Pictures and rendering properties */ boolean_t b_grayscale; /* color or grayscale display */ boolean_t b_info; /* print additionnal informations */ boolean_t b_interface; /* render interface */ boolean_t b_scale; /* allow picture scaling */ /* Idle screens management */ mtime_t last_display_date; /* last non idle display date */ mtime_t last_idle_date; /* last idle display date */ #ifdef STATS /* Statistics - these numbers are not supposed to be accurate, but are a * good indication of the thread status */ mtime_t render_time; /* last picture render time */ count_t c_fps_samples; /* picture counts */ mtime_t p_fps_sample[VOUT_FPS_SAMPLES]; /* FPS samples dates */ #endif /* Rendering buffers */ int i_buffer_index; /* buffer index */ vout_buffer_t p_buffer[2]; /* buffers properties */ /* Videos heap and translation tables */ picture_t p_picture[VOUT_MAX_PICTURES]; /* pictures */ subpicture_t p_subpicture[VOUT_MAX_PICTURES]; /* subpictures */ int i_pictures; /* current heap size */ vout_yuv_t yuv; /* translation tables */ /* Bitmap fonts */ p_vout_font_t p_default_font; /* default font */ p_vout_font_t p_large_font; /* large font */ /* Synchronisation informations - synchro level is updated by the vout * thread and read by decoder threads */ int i_synchro_level; /* trashing level */ } vout_thread_t; /* Flags for changes - these flags are set in the i_changes field when another * thread changed a variable */ #define VOUT_INFO_CHANGE 0x0001 /* b_info changed */ #define VOUT_GRAYSCALE_CHANGE 0x0002 /* b_grayscale changed */ #define VOUT_INTF_CHANGE 0x0004 /* b_interface changed */ #define VOUT_SCALE_CHANGE 0x0008 /* b_scale changed */ #define VOUT_SIZE_CHANGE 0x0200 /* size changed */ #define VOUT_DEPTH_CHANGE 0x0400 /* depth changed */ #define VOUT_GAMMA_CHANGE 0x0010 /* gamma changed */ #define VOUT_YUV_CHANGE 0x0800 /* change yuv tables */ #define VOUT_NODISPLAY_CHANGE 0xff00 /* changes which forbidden display */ /***************************************************************************** * Macros *****************************************************************************/ /* RGB2PIXEL: assemble RGB components to a pixel value, returns a u32 */ #define RGB2PIXEL( p_vout, i_red, i_green, i_blue ) \ (((((u32)i_red) >> p_vout->i_red_rshift) << p_vout->i_red_lshift) | \ ((((u32)i_green) >> p_vout->i_green_rshift) << p_vout->i_green_lshift) | \ ((((u32)i_blue) >> p_vout->i_blue_rshift) << p_vout->i_blue_lshift)) /***************************************************************************** * Prototypes *****************************************************************************/ vout_thread_t * vout_CreateThread ( char *psz_display, int i_root_window, int i_width, int i_height, int *pi_status, int i_method ); void vout_DestroyThread ( vout_thread_t *p_vout, int *pi_status ); picture_t * vout_CreatePicture ( vout_thread_t *p_vout, int i_type, int i_width, int i_height ); void vout_DestroyPicture ( vout_thread_t *p_vout, picture_t *p_pic ); void vout_DisplayPicture ( vout_thread_t *p_vout, picture_t *p_pic ); void vout_DatePicture ( vout_thread_t *p_vout, picture_t *p_pic, mtime_t date ); void vout_LinkPicture ( vout_thread_t *p_vout, picture_t *p_pic ); void vout_UnlinkPicture ( vout_thread_t *p_vout, picture_t *p_pic ); subpicture_t * vout_CreateSubPicture ( vout_thread_t *p_vout, int i_type, int i_size ); void vout_DestroySubPicture ( vout_thread_t *p_vout, subpicture_t *p_subpic ); void vout_DisplaySubPicture ( vout_thread_t *p_vout, subpicture_t *p_subpic ); void vout_SetBuffers ( vout_thread_t *p_vout, void *p_buf1, void *p_buf2 );