You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
171 lines
9.3 KiB
171 lines
9.3 KiB
/*******************************************************************************
|
|
* 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_tables_t: pre-calculated convertion tables
|
|
*******************************************************************************
|
|
* These tables are used by convertion and scaling functions.
|
|
*******************************************************************************/
|
|
typedef struct vout_tables_s
|
|
{
|
|
void * p_base; /* base for all translation tables */
|
|
union
|
|
{
|
|
struct { u16 *p_red, *p_green, *p_blue; } rgb16; /* color 15, 16 bpp */
|
|
struct { u32 *p_red, *p_green, *p_blue; } rgb32; /* color 24, 32 bpp */
|
|
struct { u16 *p_gray; } gray16; /* gray 15, 16 bpp */
|
|
struct { u32 *p_gray; } gray32; /* gray 24, 32 bpp */
|
|
} yuv;
|
|
} vout_tables_t;
|
|
|
|
/*******************************************************************************
|
|
* vout_convert_t: 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 (start address in picture)
|
|
* p_y, p_u, p_v Y,U,V samples addresses
|
|
* i_width Y samples width
|
|
* i_height Y samples height
|
|
* i_eol number of Y samples to reach the next line
|
|
* i_pic_eol number or pixels to reach the next line
|
|
* i_scale if non 0, vertical scaling is 1 - 1/i_scale
|
|
* i_matrix_coefficients matrix coefficients
|
|
* Conditions:
|
|
* start x + i_width < picture width
|
|
* start y + i_height * (scaling factor) < picture height
|
|
* i_width % 16 == 0
|
|
*******************************************************************************/
|
|
typedef void (vout_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_eol, int i_pic_eol,
|
|
int i_scale, int i_matrix_coefficients );
|
|
|
|
/*******************************************************************************
|
|
* vout_scale_t: scaling function
|
|
*******************************************************************************
|
|
* When a picture can't be scaled unsing the fast i_y_scale parameter of a
|
|
* transformation, it is rendered in a temporary buffer then scaled using a
|
|
* totally accurate (but also very slow) method.
|
|
* This is the prototype common to all scaling functions. The types of p_buffer
|
|
* and p_pic will change depending of the screen depth treated.
|
|
* Parameters:
|
|
* p_vout video output thread
|
|
* p_pic picture address (start address in picture)
|
|
* p_buffer source picture
|
|
* i_width buffer width
|
|
* i_height buffer height
|
|
* i_eol number of pixels to reach next buffer line
|
|
* i_pic_eol number of pixels to reach next picture line
|
|
* f_alpha, f_beta horizontal and vertical scaling factors
|
|
*******************************************************************************/
|
|
typedef void (vout_scale_t)( p_vout_thread_t p_vout, void *p_pic, void *p_buffer,
|
|
int i_width, int i_height, int i_eol, int i_pic_eol,
|
|
float f_alpha, float f_beta );
|
|
|
|
/*******************************************************************************
|
|
* 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 following
|
|
* structure.
|
|
*******************************************************************************/
|
|
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 subtitle_lock; /* subtitle heap lock */
|
|
int * pi_status; /* temporary status flag */
|
|
p_vout_sys_t p_sys; /* system output method */
|
|
|
|
/* Current display properties */
|
|
boolean_t b_info; /* print additionnal informations */
|
|
boolean_t b_grayscale; /* color or grayscale display */
|
|
int i_width; /* current output method width */
|
|
int i_height; /* current output method height */
|
|
int i_bytes_per_line;/* bytes per line (including virtual) */
|
|
int i_screen_depth; /* bits per pixel */
|
|
int i_bytes_per_pixel; /* real screen depth */
|
|
float f_x_ratio; /* horizontal display ratio */
|
|
float f_y_ratio; /* vertical display ratio */
|
|
float f_gamma; /* gamma */
|
|
|
|
#ifdef STATS
|
|
/* Statistics - these numbers are not supposed to be accurate, but are a
|
|
* good indication of the thread status */
|
|
mtime_t loop_time; /* last picture loop time */
|
|
count_t c_fps_samples; /* picture counts */
|
|
mtime_t fps_sample[ VOUT_FPS_SAMPLES ]; /* FPS samples dates */
|
|
#endif
|
|
|
|
/* Running properties */
|
|
u16 i_changes; /* changes made to the thread */
|
|
mtime_t last_picture_date; /* last picture display date */
|
|
mtime_t last_idle_date; /* last idle screen displaydate */
|
|
|
|
/* Videos heap and translation tables */
|
|
picture_t p_picture[VOUT_MAX_PICTURES]; /* pictures */
|
|
subtitle_t p_subtitle[VOUT_MAX_PICTURES]; /* subtitles */
|
|
vout_tables_t tables; /* translation tables */
|
|
vout_convert_t * p_ConvertYUV420; /* YUV 4:2:0 converter */
|
|
vout_convert_t * p_ConvertYUV422; /* YUV 4:2:2 converter */
|
|
vout_convert_t * p_ConvertYUV444; /* YUV 4:4:4 converter */
|
|
vout_scale_t * p_Scale; /* scaler */
|
|
} 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_SIZE_CHANGE 0x0004 /* size changed */
|
|
#define VOUT_DEPTH_CHANGE 0x0008 /* depth changed */
|
|
#define VOUT_RATIO_CHANGE 0x0010 /* display ratio changed */
|
|
#define VOUT_GAMMA_CHANGE 0x0020 /* gamma changed */
|
|
|
|
/*******************************************************************************
|
|
* Prototypes
|
|
*******************************************************************************/
|
|
vout_thread_t * vout_CreateThread (
|
|
#ifdef VIDEO_X11
|
|
char *psz_display, Window root_window,
|
|
#endif
|
|
int i_width, int i_height, int *pi_status
|
|
);
|
|
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_LinkPicture ( vout_thread_t *p_vout, picture_t *p_pic );
|
|
void vout_UnlinkPicture ( vout_thread_t *p_vout, picture_t *p_pic );
|
|
subtitle_t * vout_CreateSubtitle ( vout_thread_t *p_vout, int i_type, int i_size );
|
|
void vout_DestroySubtitle ( vout_thread_t *p_vout, subtitle_t *p_sub );
|
|
void vout_DisplaySubtitle ( vout_thread_t *p_vout, subtitle_t *p_sub );
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|