/***************************************************************************** * video_output.c : video output thread * (c)2000 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. *****************************************************************************/ /***************************************************************************** * Preamble *****************************************************************************/ #include #include #include #include #include "common.h" #include "config.h" #include "mtime.h" #include "vlc_thread.h" #include "video.h" #include "video_output.h" #include "video_text.h" #include "video_sys.h" #include "video_yuv.h" #include "intf_msg.h" #include "main.h" /***************************************************************************** * Local prototypes *****************************************************************************/ static int BinaryLog ( u32 i ); static void MaskToShift ( int *pi_left, int *pi_right, u32 i_mask ); static int InitThread ( vout_thread_t *p_vout ); static void RunThread ( vout_thread_t *p_vout ); static void ErrorThread ( vout_thread_t *p_vout ); static void EndThread ( vout_thread_t *p_vout ); static void DestroyThread ( vout_thread_t *p_vout, int i_status ); static void Print ( vout_thread_t *p_vout, int i_x, int i_y, int i_h_align, int i_v_align, unsigned char *psz_text ); static void SetBufferArea ( vout_thread_t *p_vout, int i_x, int i_y, int i_w, int i_h ); static void SetBufferPicture ( vout_thread_t *p_vout, picture_t *p_pic ); static void RenderPicture ( vout_thread_t *p_vout, picture_t *p_pic ); static void RenderPictureInfo ( vout_thread_t *p_vout, picture_t *p_pic ); static void RenderSubPicture ( vout_thread_t *p_vout, subpicture_t *p_subpic ); static void RenderInterface ( vout_thread_t *p_vout ); static int RenderIdle ( vout_thread_t *p_vout ); static void RenderInfo ( vout_thread_t *p_vout ); static void Synchronize ( vout_thread_t *p_vout, s64 i_delay ); static int Manage ( vout_thread_t *p_vout ); static int Align ( vout_thread_t *p_vout, int *pi_x, int *pi_y, int i_width, int i_height, int i_h_align, int i_v_align ); static void SetPalette ( p_vout_thread_t p_vout, u16 *red, u16 *green, u16 *blue, u16 *transp ); /***************************************************************************** * vout_CreateThread: creates a new video output thread ***************************************************************************** * This function creates a new video output thread, and returns a pointer * to its description. On error, it returns NULL. * If pi_status is NULL, then the function will block until the thread is ready. * If not, it will be updated using one of the THREAD_* constants. *****************************************************************************/ vout_thread_t * vout_CreateThread ( char *psz_display, int i_root_window, int i_width, int i_height, int *pi_status, int i_method ) { vout_thread_t * p_vout; /* thread descriptor */ int i_status; /* thread status */ int i_index; /* index for array initialization */ /* Allocate descriptor */ intf_DbgMsg("\n"); p_vout = (vout_thread_t *) malloc( sizeof(vout_thread_t) ); if( p_vout == NULL ) { intf_ErrMsg("error: %s\n", strerror(ENOMEM)); return( NULL ); } /* Sets method-specific functions */ switch( i_method ) { #ifdef VIDEO_DUMMY case VOUT_DUMMY_METHOD: p_vout->p_sys_create = vout_DummySysCreate; p_vout->p_sys_init = vout_DummySysInit; p_vout->p_sys_end = vout_DummySysEnd; p_vout->p_sys_destroy = vout_DummySysDestroy; p_vout->p_sys_manage = vout_DummySysManage; p_vout->p_sys_display = vout_DummySysDisplay; break; #endif #ifdef VIDEO_X11 case VOUT_X11_METHOD: p_vout->p_sys_create = vout_X11SysCreate; p_vout->p_sys_init = vout_X11SysInit; p_vout->p_sys_end = vout_X11SysEnd; p_vout->p_sys_destroy = vout_X11SysDestroy; p_vout->p_sys_manage = vout_X11SysManage; p_vout->p_sys_display = vout_X11SysDisplay; break; #endif #ifdef VIDEO_FB case VOUT_FB_METHOD: p_vout->p_sys_create = vout_FBSysCreate; p_vout->p_sys_init = vout_FBSysInit; p_vout->p_sys_end = vout_FBSysEnd; p_vout->p_sys_destroy = vout_FBSysDestroy; p_vout->p_sys_manage = vout_FBSysManage; p_vout->p_sys_display = vout_FBSysDisplay; break; #endif #ifdef VIDEO_GLIDE case VOUT_GLIDE_METHOD: p_vout->p_sys_create = vout_GlideSysCreate; p_vout->p_sys_init = vout_GlideSysInit; p_vout->p_sys_end = vout_GlideSysEnd; p_vout->p_sys_destroy = vout_GlideSysDestroy; p_vout->p_sys_manage = vout_GlideSysManage; p_vout->p_sys_display = vout_GlideSysDisplay; break; #endif #ifdef VIDEO_DGA case VOUT_DGA_METHOD: p_vout->p_sys_create = vout_DGASysCreate; p_vout->p_sys_init = vout_DGASysInit; p_vout->p_sys_end = vout_DGASysEnd; p_vout->p_sys_destroy = vout_DGASysDestroy; p_vout->p_sys_manage = vout_DGASysManage; p_vout->p_sys_display = vout_DGASysDisplay; break; #endif #ifdef VIDEO_GGI case VOUT_GGI_METHOD: p_vout->p_sys_create = vout_GGISysCreate; p_vout->p_sys_init = vout_GGISysInit; p_vout->p_sys_end = vout_GGISysEnd; p_vout->p_sys_destroy = vout_GGISysDestroy; p_vout->p_sys_manage = vout_GGISysManage; p_vout->p_sys_display = vout_GGISysDisplay; break; #endif #ifdef VIDEO_BEOS case VOUT_BEOS_METHOD: p_vout->p_sys_create = vout_BSysCreate; p_vout->p_sys_init = vout_BSysInit; p_vout->p_sys_end = vout_BSysEnd; p_vout->p_sys_destroy = vout_BSysDestroy; p_vout->p_sys_manage = vout_BSysManage; p_vout->p_sys_display = vout_BSysDisplay; break; #endif default: intf_ErrMsg( "error: video output method not available\n" ); free( p_vout ); return( NULL ); } /* Initialize thread properties - thread id and locks will be initialized * later */ p_vout->b_die = 0; p_vout->b_error = 0; p_vout->b_active = 0; p_vout->pi_status = (pi_status != NULL) ? pi_status : &i_status; *p_vout->pi_status = THREAD_CREATE; /* Initialize some fields used by the system-dependant method - these fields will * probably be modified by the method, and are only preferences */ p_vout->i_changes = 0; p_vout->i_width = i_width; p_vout->i_height = i_height; p_vout->i_bytes_per_line = i_width * 2; p_vout->i_screen_depth = 15; p_vout->i_bytes_per_pixel = 2; p_vout->f_gamma = VOUT_GAMMA; p_vout->b_grayscale = main_GetIntVariable( VOUT_GRAYSCALE_VAR, VOUT_GRAYSCALE_DEFAULT ); p_vout->b_info = 0; p_vout->b_interface = 0; p_vout->b_scale = 0; p_vout->p_set_palette = SetPalette; intf_DbgMsg("wished configuration: %dx%d, %d/%d bpp (%d Bpl)\n", p_vout->i_width, p_vout->i_height, p_vout->i_screen_depth, p_vout->i_bytes_per_pixel * 8, p_vout->i_bytes_per_line ); /* Initialize idle screen */ p_vout->last_display_date = mdate(); p_vout->last_display_date = 0; p_vout->last_idle_date = 0; #ifdef STATS /* Initialize statistics fields */ p_vout->render_time = 0; p_vout->c_fps_samples = 0; #endif /* Initialize buffer index */ p_vout->i_buffer_index = 0; /* Initialize pictures and subpictures - translation tables and functions * will be initialized later in InitThread */ for( i_index = 0; i_index < VOUT_MAX_PICTURES; i_index++) { p_vout->p_picture[i_index].i_type = EMPTY_PICTURE; p_vout->p_picture[i_index].i_status = FREE_PICTURE; p_vout->p_subpicture[i_index].i_type = EMPTY_SUBPICTURE; p_vout->p_subpicture[i_index].i_status= FREE_SUBPICTURE; } p_vout->i_pictures = 0; /* Initialize synchronization informations */ p_vout->i_synchro_level = VOUT_SYNCHRO_LEVEL_START; /* Create and initialize system-dependant method - this function issues its * own error messages */ if( p_vout->p_sys_create( p_vout, psz_display, i_root_window ) ) { free( p_vout ); return( NULL ); } intf_DbgMsg("actual configuration: %dx%d, %d/%d bpp (%d Bpl), masks: 0x%x/0x%x/0x%x\n", p_vout->i_width, p_vout->i_height, p_vout->i_screen_depth, p_vout->i_bytes_per_pixel * 8, p_vout->i_bytes_per_line, p_vout->i_red_mask, p_vout->i_green_mask, p_vout->i_blue_mask ); /* Calculate shifts from system-updated masks */ MaskToShift( &p_vout->i_red_lshift, &p_vout->i_red_rshift, p_vout->i_red_mask ); MaskToShift( &p_vout->i_green_lshift, &p_vout->i_green_rshift, p_vout->i_green_mask ); MaskToShift( &p_vout->i_blue_lshift, &p_vout->i_blue_rshift, p_vout->i_blue_mask ); /* Set some useful colors */ p_vout->i_white_pixel = RGB2PIXEL( p_vout, 255, 255, 255 ); p_vout->i_black_pixel = RGB2PIXEL( p_vout, 0, 0, 0 ); p_vout->i_gray_pixel = RGB2PIXEL( p_vout, 128, 128, 128 ); p_vout->i_blue_pixel = RGB2PIXEL( p_vout, 0, 0, 50 ); /* Load fonts - fonts must be initialized after the system method since * they may be dependant on screen depth and other thread properties */ p_vout->p_default_font = vout_LoadFont( VOUT_DEFAULT_FONT ); if( p_vout->p_default_font == NULL ) { p_vout->p_sys_destroy( p_vout ); free( p_vout ); return( NULL ); } p_vout->p_large_font = vout_LoadFont( VOUT_LARGE_FONT ); if( p_vout->p_large_font == NULL ) { vout_UnloadFont( p_vout->p_default_font ); p_vout->p_sys_destroy( p_vout ); free( p_vout ); return( NULL ); } /* Create thread and set locks */ vlc_mutex_init( &p_vout->picture_lock ); vlc_mutex_init( &p_vout->subpicture_lock ); vlc_mutex_init( &p_vout->change_lock ); vlc_mutex_lock( &p_vout->change_lock ); if( vlc_thread_create( &p_vout->thread_id, "video output", (void *) RunThread, (void *) p_vout) ) { intf_ErrMsg("error: %s\n", strerror(ENOMEM)); vout_UnloadFont( p_vout->p_default_font ); vout_UnloadFont( p_vout->p_large_font ); p_vout->p_sys_destroy( p_vout ); free( p_vout ); return( NULL ); } intf_Msg("Video display initialized (%dx%d, %d/%d bpp)\n", p_vout->i_width, p_vout->i_height, p_vout->i_screen_depth, p_vout->i_bytes_per_pixel * 8 ); /* If status is NULL, wait until the thread is created */ if( pi_status == NULL ) { do { msleep( THREAD_SLEEP ); }while( (i_status != THREAD_READY) && (i_status != THREAD_ERROR) && (i_status != THREAD_FATAL) ); if( i_status != THREAD_READY ) { return( NULL ); } } return( p_vout ); } /***************************************************************************** * vout_DestroyThread: destroys a previously created thread ***************************************************************************** * Destroy a terminated thread. * The function will request a destruction of the specified thread. If pi_error * is NULL, it will return once the thread is destroyed. Else, it will be * update using one of the THREAD_* constants. *****************************************************************************/ void vout_DestroyThread( vout_thread_t *p_vout, int *pi_status ) { int i_status; /* thread status */ /* Set status */ intf_DbgMsg("\n"); p_vout->pi_status = (pi_status != NULL) ? pi_status : &i_status; *p_vout->pi_status = THREAD_DESTROY; /* Request thread destruction */ p_vout->b_die = 1; /* If status is NULL, wait until thread has been destroyed */ if( pi_status == NULL ) { do { msleep( THREAD_SLEEP ); }while( (i_status != THREAD_OVER) && (i_status != THREAD_ERROR) && (i_status != THREAD_FATAL) ); } } /***************************************************************************** * vout_DisplaySubPicture: display a subpicture unit ***************************************************************************** * Remove the reservation flag of an subpicture, which will cause it to be ready * for display. The picture does not need to be locked, since it is ignored by * the output thread if is reserved. *****************************************************************************/ void vout_DisplaySubPicture( vout_thread_t *p_vout, subpicture_t *p_subpic ) { #ifdef DEBUG_VIDEO char psz_begin_date[MSTRTIME_MAX_SIZE]; /* buffer for date string */ char psz_end_date[MSTRTIME_MAX_SIZE]; /* buffer for date string */ #endif #ifdef DEBUG /* Check if status is valid */ if( p_subpic->i_status != RESERVED_SUBPICTURE ) { intf_DbgMsg("error: subpicture %p has invalid status %d\n", p_subpic, p_subpic->i_status ); } #endif /* Remove reservation flag */ p_subpic->i_status = READY_SUBPICTURE; #ifdef DEBUG_VIDEO /* Send subpicture informations */ intf_DbgMsg("subpicture %p: type=%d, begin date=%s, end date=%s\n", p_subpic, p_subpic->i_type, mstrtime( psz_begin_date, p_subpic->begin_date ), mstrtime( psz_end_date, p_subpic->end_date ) ); #endif } /***************************************************************************** * vout_CreateSubPicture: allocate an subpicture in the video output heap. ***************************************************************************** * This function create a reserved subpicture in the video output heap. * A null pointer is returned if the function fails. This method provides an * already allocated zone of memory in the spu data fields. It needs locking * since several pictures can be created by several producers threads. *****************************************************************************/ subpicture_t *vout_CreateSubPicture( vout_thread_t *p_vout, int i_type, int i_size ) { int i_subpic; /* subpicture index */ subpicture_t * p_free_subpic = NULL; /* first free subpicture */ subpicture_t * p_destroyed_subpic = NULL; /* first destroyed subpic */ /* Get lock */ vlc_mutex_lock( &p_vout->subpicture_lock ); /* * Look for an empty place */ for( i_subpic = 0; i_subpic < VOUT_MAX_PICTURES; i_subpic++ ) { if( p_vout->p_subpicture[i_subpic].i_status == DESTROYED_SUBPICTURE ) { /* Subpicture is marked for destruction, but is still allocated */ if( (p_vout->p_subpicture[i_subpic].i_type == i_type) && (p_vout->p_subpicture[i_subpic].i_size >= i_size) ) { /* Memory size do match or is smaller : memory will not be reallocated, * and function can end immediately - this is the best possible case, * since no memory allocation needs to be done */ p_vout->p_subpicture[i_subpic].i_status = RESERVED_SUBPICTURE; #ifdef DEBUG_VIDEO intf_DbgMsg("subpicture %p (in destroyed subpicture slot)\n", &p_vout->p_subpicture[i_subpic] ); #endif vlc_mutex_unlock( &p_vout->subpicture_lock ); return( &p_vout->p_subpicture[i_subpic] ); } else if( p_destroyed_subpic == NULL ) { /* Memory size do not match, but subpicture index will be kept in * case no other place are left */ p_destroyed_subpic = &p_vout->p_subpicture[i_subpic]; } } else if( (p_free_subpic == NULL) && (p_vout->p_subpicture[i_subpic].i_status == FREE_SUBPICTURE )) { /* Subpicture is empty and ready for allocation */ p_free_subpic = &p_vout->p_subpicture[i_subpic]; } } /* If no free subpicture is available, use a destroyed subpicture */ if( (p_free_subpic == NULL) && (p_destroyed_subpic != NULL ) ) { /* No free subpicture or matching destroyed subpicture has been found, but * a destroyed subpicture is still avalaible */ free( p_destroyed_subpic->p_data ); p_free_subpic = p_destroyed_subpic; } /* * Prepare subpicture */ if( p_free_subpic != NULL ) { /* Allocate memory */ switch( i_type ) { case TEXT_SUBPICTURE: /* text subpicture */ p_free_subpic->p_data = malloc( i_size + 1 ); break; #ifdef DEBUG default: intf_DbgMsg("error: unknown subpicture type %d\n", i_type ); p_free_subpic->p_data = NULL; break; #endif } if( p_free_subpic->p_data != NULL ) { /* Copy subpicture informations, set some default values */ p_free_subpic->i_type = i_type; p_free_subpic->i_status = RESERVED_SUBPICTURE; p_free_subpic->i_size = i_size; p_free_subpic->i_x = 0; p_free_subpic->i_y = 0; p_free_subpic->i_width = 0; p_free_subpic->i_height = 0; p_free_subpic->i_horizontal_align = CENTER_RALIGN; p_free_subpic->i_vertical_align = CENTER_RALIGN; } else { /* Memory allocation failed : set subpicture as empty */ p_free_subpic->i_type = EMPTY_SUBPICTURE; p_free_subpic->i_status = FREE_SUBPICTURE; p_free_subpic = NULL; intf_ErrMsg("warning: %s\n", strerror( ENOMEM ) ); } #ifdef DEBUG_VIDEO intf_DbgMsg("subpicture %p (in free subpicture slot)\n", p_free_subpic ); #endif vlc_mutex_unlock( &p_vout->subpicture_lock ); return( p_free_subpic ); } /* No free or destroyed subpicture could be found */ intf_DbgMsg( "warning: heap is full\n" ); vlc_mutex_unlock( &p_vout->subpicture_lock ); return( NULL ); } /***************************************************************************** * vout_DestroySubPicture: remove a subpicture from the heap ***************************************************************************** * This function frees a previously reserved subpicture. * It is meant to be used when the construction of a picture aborted. * This function does not need locking since reserved subpictures are ignored * by the output thread. *****************************************************************************/ void vout_DestroySubPicture( vout_thread_t *p_vout, subpicture_t *p_subpic ) { #ifdef DEBUG /* Check if status is valid */ if( p_subpic->i_status != RESERVED_SUBPICTURE ) { intf_DbgMsg("error: subpicture %p has invalid status %d\n", p_subpic, p_subpic->i_status ); } #endif p_subpic->i_status = DESTROYED_SUBPICTURE; #ifdef DEBUG_VIDEO intf_DbgMsg("subpicture %p\n", p_subpic); #endif } /***************************************************************************** * vout_DisplayPicture: display a picture ***************************************************************************** * Remove the reservation flag of a picture, which will cause it to be ready for * display. The picture won't be displayed until vout_DatePicture has been * called. *****************************************************************************/ void vout_DisplayPicture( vout_thread_t *p_vout, picture_t *p_pic ) { vlc_mutex_lock( &p_vout->picture_lock ); switch( p_pic->i_status ) { case RESERVED_PICTURE: p_pic->i_status = RESERVED_DISP_PICTURE; break; case RESERVED_DATED_PICTURE: p_pic->i_status = READY_PICTURE; break; #ifdef DEBUG default: intf_DbgMsg("error: picture %p has invalid status %d\n", p_pic, p_pic->i_status ); break; #endif } #ifdef DEBUG_VIDEO intf_DbgMsg("picture %p\n", p_pic); #endif vlc_mutex_unlock( &p_vout->picture_lock ); } /***************************************************************************** * vout_DatePicture: date a picture ***************************************************************************** * Remove the reservation flag of a picture, which will cause it to be ready for * display. The picture won't be displayed until vout_DisplayPicture has been * called. *****************************************************************************/ void vout_DatePicture( vout_thread_t *p_vout, picture_t *p_pic, mtime_t date ) { #ifdef DEBUG_VIDEO char psz_date[MSTRTIME_MAX_SIZE]; /* date */ #endif vlc_mutex_lock( &p_vout->picture_lock ); p_pic->date = date; switch( p_pic->i_status ) { case RESERVED_PICTURE: p_pic->i_status = RESERVED_DATED_PICTURE; break; case RESERVED_DISP_PICTURE: p_pic->i_status = READY_PICTURE; break; #ifdef DEBUG default: intf_DbgMsg("error: picture %p has invalid status %d\n", p_pic, p_pic->i_status ); break; #endif } #ifdef DEBUG_VIDEO intf_DbgMsg("picture %p, display date: %s\n", p_pic, mstrtime( psz_date, p_pic->date) ); #endif vlc_mutex_unlock( &p_vout->picture_lock ); } /***************************************************************************** * vout_CreatePicture: allocate a picture in the video output heap. ***************************************************************************** * This function create a reserved image in the video output heap. * A null pointer is returned if the function fails. This method provides an * already allocated zone of memory in the picture data fields. It needs locking * since several pictures can be created by several producers threads. *****************************************************************************/ picture_t *vout_CreatePicture( vout_thread_t *p_vout, int i_type, int i_width, int i_height ) { int i_picture; /* picture index */ int i_chroma_width = 0; /* chroma width */ picture_t * p_free_picture = NULL; /* first free picture */ picture_t * p_destroyed_picture = NULL; /* first destroyed picture */ /* Get lock */ vlc_mutex_lock( &p_vout->picture_lock ); /* * Look for an empty place */ for( i_picture = 0; i_picture < VOUT_MAX_PICTURES; i_picture++ ) { if( p_vout->p_picture[i_picture].i_status == DESTROYED_PICTURE ) { /* Picture is marked for destruction, but is still allocated - note * that if width and type are the same for two pictures, chroma_width * should also be the same */ if( (p_vout->p_picture[i_picture].i_type == i_type) && (p_vout->p_picture[i_picture].i_height == i_height) && (p_vout->p_picture[i_picture].i_width == i_width) ) { /* Memory size do match : memory will not be reallocated, and function * can end immediately - this is the best possible case, since no * memory allocation needs to be done */ p_vout->p_picture[i_picture].i_status = RESERVED_PICTURE; p_vout->i_pictures++; #ifdef DEBUG_VIDEO intf_DbgMsg("picture %p (in destroyed picture slot)\n", &p_vout->p_picture[i_picture] ); #endif vlc_mutex_unlock( &p_vout->picture_lock ); return( &p_vout->p_picture[i_picture] ); } else if( p_destroyed_picture == NULL ) { /* Memory size do not match, but picture index will be kept in * case no other place are left */ p_destroyed_picture = &p_vout->p_picture[i_picture]; } } else if( (p_free_picture == NULL) && (p_vout->p_picture[i_picture].i_status == FREE_PICTURE )) { /* Picture is empty and ready for allocation */ p_free_picture = &p_vout->p_picture[i_picture]; } } /* If no free picture is available, use a destroyed picture */ if( (p_free_picture == NULL) && (p_destroyed_picture != NULL ) ) { /* No free picture or matching destroyed picture has been found, but * a destroyed picture is still avalaible */ free( p_destroyed_picture->p_data ); p_free_picture = p_destroyed_picture; } /* * Prepare picture */ if( p_free_picture != NULL ) { /* Allocate memory */ switch( i_type ) { case YUV_420_PICTURE: /* YUV 420: 1,1/4,1/4 samples per pixel */ i_chroma_width = i_width / 2; p_free_picture->p_data = malloc( i_height * i_chroma_width * 3 * sizeof( yuv_data_t ) ); p_free_picture->p_y = (yuv_data_t *)p_free_picture->p_data; p_free_picture->p_u = (yuv_data_t *)p_free_picture->p_data +i_height*i_chroma_width*4/2; p_free_picture->p_v = (yuv_data_t *)p_free_picture->p_data +i_height*i_chroma_width*5/2; break; case YUV_422_PICTURE: /* YUV 422: 1,1/2,1/2 samples per pixel */ i_chroma_width = i_width / 2; p_free_picture->p_data = malloc( i_height * i_chroma_width * 4 * sizeof( yuv_data_t ) ); p_free_picture->p_y = (yuv_data_t *)p_free_picture->p_data; p_free_picture->p_u = (yuv_data_t *)p_free_picture->p_data +i_height*i_chroma_width*2; p_free_picture->p_v = (yuv_data_t *)p_free_picture->p_data +i_height*i_chroma_width*3; break; case YUV_444_PICTURE: /* YUV 444: 1,1,1 samples per pixel */ i_chroma_width = i_width; p_free_picture->p_data = malloc( i_height * i_chroma_width * 3 * sizeof( yuv_data_t ) ); p_free_picture->p_y = (yuv_data_t *)p_free_picture->p_data; p_free_picture->p_u = (yuv_data_t *)p_free_picture->p_data +i_height*i_chroma_width; p_free_picture->p_v = (yuv_data_t *)p_free_picture->p_data +i_height*i_chroma_width*2; break; #ifdef DEBUG default: intf_DbgMsg("error: unknown picture type %d\n", i_type ); p_free_picture->p_data = NULL; break; #endif } if( p_free_picture->p_data != NULL ) { /* Copy picture informations, set some default values */ p_free_picture->i_type = i_type; p_free_picture->i_status = RESERVED_PICTURE; p_free_picture->i_matrix_coefficients = 1; p_free_picture->i_width = i_width; p_free_picture->i_height = i_height; p_free_picture->i_chroma_width = i_chroma_width; p_free_picture->i_display_horizontal_offset = 0; p_free_picture->i_display_vertical_offset = 0; p_free_picture->i_display_width = i_width; p_free_picture->i_display_height = i_height; p_free_picture->i_aspect_ratio = AR_SQUARE_PICTURE; p_free_picture->i_refcount = 0; p_vout->i_pictures++; } else { /* Memory allocation failed : set picture as empty */ p_free_picture->i_type = EMPTY_PICTURE; p_free_picture->i_status = FREE_PICTURE; p_free_picture = NULL; intf_ErrMsg("warning: %s\n", strerror( ENOMEM ) ); } #ifdef DEBUG_VIDEO intf_DbgMsg("picture %p (in free picture slot)\n", p_free_picture ); #endif vlc_mutex_unlock( &p_vout->picture_lock ); return( p_free_picture ); } /* No free or destroyed picture could be found */ intf_DbgMsg( "warning: heap is full\n" ); vlc_mutex_unlock( &p_vout->picture_lock ); return( NULL ); } /***************************************************************************** * vout_DestroyPicture: remove a permanent or reserved picture from the heap ***************************************************************************** * This function frees a previously reserved picture or a permanent * picture. It is meant to be used when the construction of a picture aborted. * Note that the picture will be destroyed even if it is linked ! *****************************************************************************/ void vout_DestroyPicture( vout_thread_t *p_vout, picture_t *p_pic ) { vlc_mutex_lock( &p_vout->picture_lock ); #ifdef DEBUG /* Check if picture status is valid */ if( (p_pic->i_status != RESERVED_PICTURE) && (p_pic->i_status != RESERVED_DATED_PICTURE) && (p_pic->i_status != RESERVED_DISP_PICTURE) ) { intf_DbgMsg("error: picture %p has invalid status %d\n", p_pic, p_pic->i_status ); } #endif p_pic->i_status = DESTROYED_PICTURE; p_vout->i_pictures--; #ifdef DEBUG_VIDEO intf_DbgMsg("picture %p\n", p_pic); #endif vlc_mutex_unlock( &p_vout->picture_lock ); } /***************************************************************************** * vout_LinkPicture: increment reference counter of a picture ***************************************************************************** * This function increment the reference counter of a picture in the video * heap. It needs a lock since several producer threads can access the picture. *****************************************************************************/ void vout_LinkPicture( vout_thread_t *p_vout, picture_t *p_pic ) { vlc_mutex_lock( &p_vout->picture_lock ); p_pic->i_refcount++; #ifdef DEBUG_VIDEO intf_DbgMsg("picture %p refcount=%d\n", p_pic, p_pic->i_refcount ); #endif vlc_mutex_unlock( &p_vout->picture_lock ); } /***************************************************************************** * vout_UnlinkPicture: decrement reference counter of a picture ***************************************************************************** * This function decrement the reference counter of a picture in the video heap. *****************************************************************************/ void vout_UnlinkPicture( vout_thread_t *p_vout, picture_t *p_pic ) { vlc_mutex_lock( &p_vout->picture_lock ); p_pic->i_refcount--; #ifdef DEBUG_VIDEO if( p_pic->i_refcount < 0 ) { intf_DbgMsg("error: refcount < 0\n"); p_pic->i_refcount = 0; } #endif if( (p_pic->i_refcount == 0) && (p_pic->i_status == DISPLAYED_PICTURE) ) { p_pic->i_status = DESTROYED_PICTURE; p_vout->i_pictures--; } #ifdef DEBUG_VIDEO intf_DbgMsg("picture %p refcount=%d\n", p_pic, p_pic->i_refcount ); #endif vlc_mutex_unlock( &p_vout->picture_lock ); } /***************************************************************************** * vout_SetBuffers: set buffers adresses ***************************************************************************** * This function is called by system drivers to set buffers video memory * adresses. *****************************************************************************/ void vout_SetBuffers( vout_thread_t *p_vout, void *p_buf1, void *p_buf2 ) { /* No picture previously */ p_vout->p_buffer[0].i_pic_x = 0; p_vout->p_buffer[0].i_pic_y = 0; p_vout->p_buffer[0].i_pic_width = 0; p_vout->p_buffer[0].i_pic_height = 0; p_vout->p_buffer[1].i_pic_x = 0; p_vout->p_buffer[1].i_pic_y = 0; p_vout->p_buffer[1].i_pic_width = 0; p_vout->p_buffer[1].i_pic_height = 0; /* The first area covers all the screen */ p_vout->p_buffer[0].i_areas = 1; p_vout->p_buffer[0].pi_area_begin[0] = 0; p_vout->p_buffer[0].pi_area_end[0] = p_vout->i_height - 1; p_vout->p_buffer[1].i_areas = 1; p_vout->p_buffer[1].pi_area_begin[0] = 0; p_vout->p_buffer[1].pi_area_end[0] = p_vout->i_height - 1; /* Set adresses */ p_vout->p_buffer[0].p_data = p_buf1; p_vout->p_buffer[1].p_data = p_buf2; } /***************************************************************************** * vout_Pixel2RGB: return red, green and blue from pixel value ***************************************************************************** * Return color values, in 0-255 range, of the decomposition of a pixel. This * is a slow routine and should only be used for initialization phase. *****************************************************************************/ void vout_Pixel2RGB( vout_thread_t *p_vout, u32 i_pixel, int *pi_red, int *pi_green, int *pi_blue ) { *pi_red = i_pixel & p_vout->i_red_mask; *pi_green = i_pixel & p_vout->i_green_mask; *pi_blue = i_pixel & p_vout->i_blue_mask; } /* following functions are local */ /***************************************************************************** * BinaryLog: computes the base 2 log of a binary value ***************************************************************************** * This functions is used by MaskToShift, to get a bit index from a binary * value. *****************************************************************************/ static int BinaryLog(u32 i) { int i_log; i_log = 0; if (i & 0xffff0000) { i_log = 16; } if (i & 0xff00ff00) { i_log += 8; } if (i & 0xf0f0f0f0) { i_log += 4; } if (i & 0xcccccccc) { i_log += 2; } if (i & 0xaaaaaaaa) { i_log++; } if (i != ((u32)1 << i_log)) { intf_ErrMsg("internal error: binary log overflow\n"); } return( i_log ); } /***************************************************************************** * MaskToShift: transform a color mask into right and left shifts ***************************************************************************** * This function is used for obtaining color shifts from masks. *****************************************************************************/ static void MaskToShift( int *pi_left, int *pi_right, u32 i_mask ) { u32 i_low, i_high; /* lower hand higher bits of the mask */ /* Get bits */ i_low = i_mask & (- i_mask); /* lower bit of the mask */ i_high = i_mask + i_low; /* higher bit of the mask */ /* Transform bits into an index */ i_low = BinaryLog (i_low); i_high = BinaryLog (i_high); /* Update pointers and return */ *pi_left = i_low; *pi_right = (8 - i_high + i_low); } /***************************************************************************** * InitThread: initialize video output thread ***************************************************************************** * This function is called from RunThread and performs the second step of the * initialization. It returns 0 on success. Note that the thread's flag are not * modified inside this function. *****************************************************************************/ static int InitThread( vout_thread_t *p_vout ) { /* Update status */ intf_DbgMsg("\n"); *p_vout->pi_status = THREAD_START; /* Initialize output method - this function issues its own error messages */ if( p_vout->p_sys_init( p_vout ) ) { return( 1 ); } /* Initialize convertion tables and functions */ if( vout_InitYUV( p_vout ) ) { intf_ErrMsg("error: can't allocate YUV translation tables\n"); return( 1 ); } /* Mark thread as running and return */ p_vout->b_active = 1; *p_vout->pi_status = THREAD_READY; intf_DbgMsg("thread ready\n"); return( 0 ); } /***************************************************************************** * RunThread: video output thread ***************************************************************************** * Video output thread. This function does only returns when the thread is * terminated. It handles the pictures arriving in the video heap and the * display device events. *****************************************************************************/ static void RunThread( vout_thread_t *p_vout) { int i_index; /* index in heap */ mtime_t current_date; /* current date */ mtime_t display_date; /* display date */ boolean_t b_display; /* display flag */ picture_t * p_pic; /* picture pointer */ subpicture_t * p_subpic; /* subpicture pointer */ /* * Initialize thread */ p_vout->b_error = InitThread( p_vout ); if( p_vout->b_error ) { DestroyThread( p_vout, THREAD_ERROR ); return; } intf_DbgMsg("\n"); /* * Main loop - it is not executed if an error occured during * initialization */ while( (!p_vout->b_die) && (!p_vout->b_error) ) { /* Initialize loop variables */ p_pic = NULL; p_subpic = NULL; display_date = 0; current_date = mdate(); /* * Find the picture to display - this operation does not need lock, * since only READY_PICTUREs are handled */ for( i_index = 0; i_index < VOUT_MAX_PICTURES; i_index++ ) { if( (p_vout->p_picture[i_index].i_status == READY_PICTURE) && ( (p_pic == NULL) || (p_vout->p_picture[i_index].date < display_date) ) ) { p_pic = &p_vout->p_picture[i_index]; display_date = p_pic->date; } } if( p_pic ) { #ifdef STATS /* Computes FPS rate */ p_vout->p_fps_sample[ p_vout->c_fps_samples++ % VOUT_FPS_SAMPLES ] = display_date; #endif #if 0 if( display_date < current_date ) { /* Picture is late: it will be destroyed and the thread will sleep and * go to next picture */ vlc_mutex_lock( &p_vout->picture_lock ); if( p_pic->i_refcount ) { p_pic->i_status = DISPLAYED_PICTURE; } else { p_pic->i_status = DESTROYED_PICTURE; p_vout->i_pictures--; } intf_DbgMsg( "warning: late picture %p skipped refcount=%d\n", p_pic, p_pic->i_refcount ); vlc_mutex_unlock( &p_vout->picture_lock ); p_pic = NULL; display_date = 0; /* Update synchronization information as if display delay * was 0 */ Synchronize( p_vout, 0 ); } else #endif if( display_date > current_date + VOUT_DISPLAY_DELAY ) { /* A picture is ready to be rendered, but its rendering date is * far from the current one so the thread will perform an empty loop * as if no picture were found. The picture state is unchanged */ p_pic = NULL; display_date = 0; } else { /* Picture will be displayed, update synchronization * information */ Synchronize( p_vout, display_date - current_date ); } } /* * Find the subpicture to display - this operation does not need lock, since * only READY_SUBPICTURES are handled. If no picture has been selected, * display_date will depend on the subpicture */ //?? /* * Perform rendering, sleep and display rendered picture */ if( p_pic ) /* picture and perhaps subpicture */ { b_display = p_vout->b_active; p_vout->last_display_date = display_date; if( b_display ) { /* Set picture dimensions and clear buffer */ SetBufferPicture( p_vout, p_pic ); /* Render picture and informations */ RenderPicture( p_vout, p_pic ); if( p_vout->b_info ) { RenderPictureInfo( p_vout, p_pic ); RenderInfo( p_vout ); } } /* Remove picture from heap */ vlc_mutex_lock( &p_vout->picture_lock ); if( p_pic->i_refcount ) { p_pic->i_status = DISPLAYED_PICTURE; } else { p_pic->i_status = DESTROYED_PICTURE; p_vout->i_pictures--; } vlc_mutex_unlock( &p_vout->picture_lock ); /* Render interface and subpicture */ if( b_display && p_vout->b_interface ) { RenderInterface( p_vout ); } if( p_subpic ) { if( b_display ) { RenderSubPicture( p_vout, p_subpic ); } /* Remove subpicture from heap */ vlc_mutex_lock( &p_vout->subpicture_lock ); p_subpic->i_status = DESTROYED_SUBPICTURE; vlc_mutex_unlock( &p_vout->subpicture_lock ); } } else if( p_subpic ) /* subpicture alone */ { b_display = p_vout->b_active; p_vout->last_display_date = display_date; if( b_display ) { /* Clear buffer */ SetBufferPicture( p_vout, NULL ); /* Render informations, interface and subpicture */ if( p_vout->b_info ) { RenderInfo( p_vout ); } if( p_vout->b_interface ) { RenderInterface( p_vout ); } RenderSubPicture( p_vout, p_subpic ); } /* Remove subpicture from heap */ vlc_mutex_lock( &p_vout->subpicture_lock ); p_subpic->i_status = DESTROYED_SUBPICTURE; vlc_mutex_unlock( &p_vout->subpicture_lock ); } else if( p_vout->b_active ) /* idle or interface screen alone */ { if( p_vout->b_interface && 0 /* && ?? intf_change */ ) { /* Interface has changed, so a new rendering is required - force * it by setting last idle date to 0 */ p_vout->last_idle_date = 0; } /* Render idle screen and update idle date, then render interface if * required */ b_display = RenderIdle( p_vout ); if( b_display ) { p_vout->last_idle_date = current_date; if( p_vout->b_interface ) { RenderInterface( p_vout ); } } } else { b_display = 0; } /* * Sleep, wake up and display rendered picture */ #ifdef STATS /* Store render time */ p_vout->render_time = mdate() - current_date; #endif /* Give back change lock */ vlc_mutex_unlock( &p_vout->change_lock ); /* Sleep a while or until a given date */ if( display_date != 0 ) { mwait( display_date ); } else { msleep( VOUT_IDLE_SLEEP ); } /* On awakening, take back lock and send immediately picture to display, * then swap buffers */ vlc_mutex_lock( &p_vout->change_lock ); #ifdef DEBUG_VIDEO intf_DbgMsg( "picture %p, subpicture %p in buffer %d, display=%d\n", p_pic, p_subpic, p_vout->i_buffer_index, b_display && !(p_vout->i_changes & VOUT_NODISPLAY_CHANGE) ); #endif if( b_display && !(p_vout->i_changes & VOUT_NODISPLAY_CHANGE) ) { p_vout->p_sys_display( p_vout ); p_vout->i_buffer_index = ++p_vout->i_buffer_index & 1; } /* * Check events and manage thread */ if( p_vout->p_sys_manage( p_vout ) | Manage( p_vout ) ) { /* A fatal error occured, and the thread must terminate immediately, * without displaying anything - setting b_error to 1 cause the * immediate end of the main while() loop. */ p_vout->b_error = 1; } } /* * Error loop - wait until the thread destruction is requested */ if( p_vout->b_error ) { ErrorThread( p_vout ); } /* End of thread */ EndThread( p_vout ); DestroyThread( p_vout, THREAD_OVER ); intf_DbgMsg( "thread end\n" ); } /***************************************************************************** * ErrorThread: RunThread() error loop ***************************************************************************** * This function is called when an error occured during thread main's loop. The * thread can still receive feed, but must be ready to terminate as soon as * possible. *****************************************************************************/ static void ErrorThread( vout_thread_t *p_vout ) { /* Wait until a `die' order */ intf_DbgMsg("\n"); while( !p_vout->b_die ) { /* Sleep a while */ msleep( VOUT_IDLE_SLEEP ); } } /***************************************************************************** * EndThread: thread destruction ***************************************************************************** * This function is called when the thread ends after a sucessfull * initialization. It frees all ressources allocated by InitThread. *****************************************************************************/ static void EndThread( vout_thread_t *p_vout ) { int i_index; /* index in heap */ /* Store status */ intf_DbgMsg("\n"); *p_vout->pi_status = THREAD_END; /* Destroy all remaining pictures and subpictures */ for( i_index = 0; i_index < VOUT_MAX_PICTURES; i_index++ ) { if( p_vout->p_picture[i_index].i_status != FREE_PICTURE ) { free( p_vout->p_picture[i_index].p_data ); } if( p_vout->p_subpicture[i_index].i_status != FREE_SUBPICTURE ) { free( p_vout->p_subpicture[i_index].p_data ); } } /* Destroy translation tables */ vout_EndYUV( p_vout ); p_vout->p_sys_end( p_vout ); } /***************************************************************************** * DestroyThread: thread destruction ***************************************************************************** * This function is called when the thread ends. It frees all ressources * allocated by CreateThread. Status is available at this stage. *****************************************************************************/ static void DestroyThread( vout_thread_t *p_vout, int i_status ) { int *pi_status; /* status adress */ /* Store status adress */ intf_DbgMsg("\n"); pi_status = p_vout->pi_status; /* Destroy thread structures allocated by Create and InitThread */ vout_UnloadFont( p_vout->p_default_font ); vout_UnloadFont( p_vout->p_large_font ); p_vout->p_sys_destroy( p_vout ); free( p_vout ); *pi_status = i_status; } /***************************************************************************** * Print: print simple text on a picture ***************************************************************************** * This function will print a simple text on the picture. It is designed to * print debugging or general informations. *****************************************************************************/ void Print( vout_thread_t *p_vout, int i_x, int i_y, int i_h_align, int i_v_align, unsigned char *psz_text ) { int i_text_height; /* total text height */ int i_text_width; /* total text width */ /* Update upper left coordinates according to alignment */ vout_TextSize( p_vout->p_default_font, 0, psz_text, &i_text_width, &i_text_height ); if( !Align( p_vout, &i_x, &i_y, i_text_width, i_text_height, i_h_align, i_v_align ) ) { /* Set area and print text */ SetBufferArea( p_vout, i_x, i_y, i_text_width, i_text_height ); vout_Print( p_vout->p_default_font, p_vout->p_buffer[ p_vout->i_buffer_index ].p_data + i_y * p_vout->i_bytes_per_line + i_x * p_vout->i_bytes_per_pixel, p_vout->i_bytes_per_pixel, p_vout->i_bytes_per_line, p_vout->i_white_pixel, 0, 0, 0, psz_text ); } } /***************************************************************************** * SetBufferArea: activate an area in current buffer ***************************************************************************** * This function is called when something is rendered on the current buffer. * It set the area as active and prepare it to be cleared on next rendering. * Pay attention to the fact that in this functions, i_h is in fact the end y * coordinate of the new area. *****************************************************************************/ static void SetBufferArea( vout_thread_t *p_vout, int i_x, int i_y, int i_w, int i_h ) { vout_buffer_t * p_buffer; /* current buffer */ int i_area_begin, i_area_end; /* area vertical extension */ int i_area, i_area_copy; /* area index */ int i_area_shift; /* shift distance for areas */ /* Choose buffer and modify h to end of area position */ p_buffer = &p_vout->p_buffer[ p_vout->i_buffer_index ]; i_h += i_y - 1; /* * Remove part of the area which is inside the picture - this is done * by calling again SetBufferArea with the correct areas dimensions. */ if( (i_x >= p_buffer->i_pic_x) && (i_x + i_w <= p_buffer->i_pic_x + p_buffer->i_pic_width) ) { i_area_begin = p_buffer->i_pic_y; i_area_end = i_area_begin + p_buffer->i_pic_height - 1; if( ((i_y >= i_area_begin) && (i_y <= i_area_end)) || ((i_h >= i_area_begin) && (i_h <= i_area_end)) || ((i_y < i_area_begin) && (i_h > i_area_end)) ) { /* Keep the stripe above the picture, if any */ if( i_y < i_area_begin ) { SetBufferArea( p_vout, i_x, i_y, i_w, i_area_begin - i_y ); } /* Keep the stripe below the picture, if any */ if( i_h > i_area_end ) { SetBufferArea( p_vout, i_x, i_area_end, i_w, i_h - i_area_end ); } return; } } /* Skip some extensions until interesting areas */ for( i_area = 0; (i_area < p_buffer->i_areas) && (p_buffer->pi_area_end[i_area] + 1 <= i_y); i_area++ ) { ; } if( i_area == p_buffer->i_areas ) { /* New area is below all existing ones: just add it at the end of the * array, if possible - else, append it to the last one */ if( i_area < VOUT_MAX_AREAS ) { p_buffer->pi_area_begin[i_area] = i_y; p_buffer->pi_area_end[i_area] = i_h; p_buffer->i_areas++; } else { #ifdef DEBUG_VIDEO intf_DbgMsg("areas overflow\n"); #endif p_buffer->pi_area_end[VOUT_MAX_AREAS - 1] = i_h; } } else { i_area_begin = p_buffer->pi_area_begin[i_area]; i_area_end = p_buffer->pi_area_end[i_area]; if( i_y < i_area_begin ) { if( i_h >= i_area_begin - 1 ) { /* Extend area above */ p_buffer->pi_area_begin[i_area] = i_y; } else { /* Create a new area above : merge last area if overflow, then * move all old areas down */ if( p_buffer->i_areas == VOUT_MAX_AREAS ) { #ifdef DEBUG_VIDEO intf_DbgMsg("areas overflow\n"); #endif p_buffer->pi_area_end[VOUT_MAX_AREAS - 2] = p_buffer->pi_area_end[VOUT_MAX_AREAS - 1]; } else { p_buffer->i_areas++; } for( i_area_copy = p_buffer->i_areas - 1; i_area_copy > i_area; i_area_copy-- ) { p_buffer->pi_area_begin[i_area_copy] = p_buffer->pi_area_begin[i_area_copy - 1]; p_buffer->pi_area_end[i_area_copy] = p_buffer->pi_area_end[i_area_copy - 1]; } p_buffer->pi_area_begin[i_area] = i_y; p_buffer->pi_area_end[i_area] = i_h; return; } } if( i_h > i_area_end ) { /* Find further areas which can be merged with the new one */ for( i_area_copy = i_area + 1; (i_area_copy < p_buffer->i_areas) && (p_buffer->pi_area_begin[i_area] <= i_h); i_area_copy++ ) { ; } i_area_copy--; if( i_area_copy != i_area ) { /* Merge with last possible areas */ p_buffer->pi_area_end[i_area] = MAX( i_h, p_buffer->pi_area_end[i_area_copy] ); /* Shift lower areas upward */ i_area_shift = i_area_copy - i_area; p_buffer->i_areas -= i_area_shift; for( i_area_copy = i_area + 1; i_area_copy < p_buffer->i_areas; i_area_copy++ ) { p_buffer->pi_area_begin[i_area_copy] = p_buffer->pi_area_begin[i_area_copy + i_area_shift]; p_buffer->pi_area_end[i_area_copy] = p_buffer->pi_area_end[i_area_copy + i_area_shift]; } } else { /* Extend area below */ p_buffer->pi_area_end[i_area] = i_h; } } } } /***************************************************************************** * SetBufferPicture: clear buffer and set picture area ***************************************************************************** * This function is called before any rendering. It clears the current * rendering buffer and set the new picture area. If the picture pointer is * NULL, then no picture area is defined. Floating operations are avoided since * some MMX calculations may follow. *****************************************************************************/ static void SetBufferPicture( vout_thread_t *p_vout, picture_t *p_pic ) { vout_buffer_t * p_buffer; /* current buffer */ int i_pic_x, i_pic_y; /* picture position */ int i_pic_width, i_pic_height; /* picture dimensions */ int i_old_pic_y, i_old_pic_height; /* old picture area */ int i_vout_width, i_vout_height; /* display dimensions */ int i_area; /* area index */ int i_data_index; /* area data index */ int i_data_size; /* area data size, in 256 bytes blocs */ u64 * p_data; /* area data, for clearing */ byte_t * p_data8; /* area data, for clearing (slow) */ /* Choose buffer and set display dimensions */ p_buffer = &p_vout->p_buffer[ p_vout->i_buffer_index ]; i_vout_width = p_vout->i_width; i_vout_height = p_vout->i_height; /* * Computes new picture size */ if( p_pic != NULL ) { /* Try horizontal scaling first - width must be a mutiple of 16 */ i_pic_width = (( p_vout->b_scale || (p_pic->i_width > i_vout_width)) ? i_vout_width : p_pic->i_width) & ~0xf; switch( p_pic->i_aspect_ratio ) { case AR_3_4_PICTURE: i_pic_height = i_pic_width * 3 / 4; break; case AR_16_9_PICTURE: i_pic_height = i_pic_width * 9 / 16; break; case AR_221_1_PICTURE: i_pic_height = i_pic_width * 100 / 221; break; case AR_SQUARE_PICTURE: default: i_pic_height = p_pic->i_height * i_pic_width / p_pic->i_width; break; } /* If picture dimensions using horizontal scaling are too large, use * vertical scaling. Since width must be a multiple of 16, height is * adjusted again after. */ if( i_pic_height > i_vout_height ) { i_pic_height = ( p_vout->b_scale || (p_pic->i_height > i_vout_height)) ? i_vout_height : p_pic->i_height; switch( p_pic->i_aspect_ratio ) { case AR_3_4_PICTURE: i_pic_width = (i_pic_height * 4 / 3) & ~0xf; i_pic_height = i_pic_width * 3 / 4; break; case AR_16_9_PICTURE: i_pic_width = (i_pic_height * 16 / 9) & ~0xf; i_pic_height = i_pic_width * 9 / 16; break; case AR_221_1_PICTURE: i_pic_width = (i_pic_height * 221 / 100) & ~0xf; i_pic_height = i_pic_width * 100 / 221; break; case AR_SQUARE_PICTURE: default: i_pic_width = (p_pic->i_width * i_pic_height / p_pic->i_height) & ~0xf; i_pic_height = p_pic->i_height * i_pic_width / p_pic->i_width; break; } } /* Set picture position */ i_pic_x = (p_vout->i_width - i_pic_width) / 2; i_pic_y = (p_vout->i_height - i_pic_height) / 2; } else { /* No picture: size is 0 */ i_pic_x = 0; i_pic_y = 0; i_pic_width = 0; i_pic_height = 0; } /* * Set new picture size - if is is smaller than the previous one, clear * around it. Since picture are centered, only their size is tested. */ if( (p_buffer->i_pic_width > i_pic_width) || (p_buffer->i_pic_height > i_pic_height) ) { i_old_pic_y = p_buffer->i_pic_y; i_old_pic_height = p_buffer->i_pic_height; p_buffer->i_pic_x = i_pic_x; p_buffer->i_pic_y = i_pic_y; p_buffer->i_pic_width = i_pic_width; p_buffer->i_pic_height = i_pic_height; SetBufferArea( p_vout, 0, i_old_pic_y, p_vout->i_width, i_old_pic_height ); } else { p_buffer->i_pic_x = i_pic_x; p_buffer->i_pic_y = i_pic_y; p_buffer->i_pic_width = i_pic_width; p_buffer->i_pic_height = i_pic_height; } /* * Clear areas */ for( i_area = 0; i_area < p_buffer->i_areas; i_area++ ) { #ifdef DEBUG_VIDEO intf_DbgMsg("clearing picture %p area in buffer %d: %d-%d\n", p_pic, p_vout->i_buffer_index, p_buffer->pi_area_begin[i_area], p_buffer->pi_area_end[i_area] ); #endif i_data_size = (p_buffer->pi_area_end[i_area] - p_buffer->pi_area_begin[i_area] + 1) * p_vout->i_bytes_per_line; p_data = (u64*) (p_buffer->p_data + p_vout->i_bytes_per_line * p_buffer->pi_area_begin[i_area]); for( i_data_index = i_data_size / 256; i_data_index-- ; ) { /* Clear 256 bytes block */ *p_data++ = 0; *p_data++ = 0; *p_data++ = 0; *p_data++ = 0; *p_data++ = 0; *p_data++ = 0; *p_data++ = 0; *p_data++ = 0; *p_data++ = 0; *p_data++ = 0; *p_data++ = 0; *p_data++ = 0; *p_data++ = 0; *p_data++ = 0; *p_data++ = 0; *p_data++ = 0; *p_data++ = 0; *p_data++ = 0; *p_data++ = 0; *p_data++ = 0; *p_data++ = 0; *p_data++ = 0; *p_data++ = 0; *p_data++ = 0; *p_data++ = 0; *p_data++ = 0; *p_data++ = 0; *p_data++ = 0; *p_data++ = 0; *p_data++ = 0; *p_data++ = 0; *p_data++ = 0; } for( i_data_index = (i_data_size % 256) / 16; i_data_index--; ) { /* Clear remaining 16 bytes blocks */ *p_data++ = 0; *p_data++ = 0; } p_data8 = (byte_t *)p_data; for( i_data_index = i_data_size % 16; i_data_index--; ) { /* Clear remaining bytes */ *p_data8++ = 0; } } /* * Clear areas array */ p_buffer->i_areas = 0; } /***************************************************************************** * RenderPicture: render a picture ***************************************************************************** * This function convert a picture from a video heap to a pixel-encoded image * and copy it to the current rendering buffer. No lock is required, since the * rendered picture has been determined as existant, and will only be destroyed * by the vout thread later. *****************************************************************************/ static void RenderPicture( vout_thread_t *p_vout, picture_t *p_pic ) { #ifdef DEBUG_VIDEO char psz_date[MSTRTIME_MAX_SIZE]; /* picture date */ mtime_t render_time; /* picture rendering time */ #endif vout_buffer_t * p_buffer; /* rendering buffer */ byte_t * p_pic_data; /* convertion destination */ /* Get and set rendering informations */ p_buffer = &p_vout->p_buffer[ p_vout->i_buffer_index ]; p_pic_data = p_buffer->p_data + p_buffer->i_pic_x * p_vout->i_bytes_per_pixel + p_buffer->i_pic_y * p_vout->i_bytes_per_line; #ifdef DEBUG_VIDEO render_time = mdate(); #endif /* * Choose appropriate rendering function and render picture */ switch( p_pic->i_type ) { case YUV_420_PICTURE: p_vout->yuv.p_Convert420( p_vout, p_pic_data, p_pic->p_y, p_pic->p_u, p_pic->p_v, p_pic->i_width, p_pic->i_height, p_buffer->i_pic_width, p_buffer->i_pic_height, p_vout->i_bytes_per_line / p_vout->i_bytes_per_pixel, p_pic->i_matrix_coefficients ); break; case YUV_422_PICTURE: p_vout->yuv.p_Convert422( p_vout, p_pic_data, p_pic->p_y, p_pic->p_u, p_pic->p_v, p_pic->i_width, p_pic->i_height, p_buffer->i_pic_width, p_buffer->i_pic_height, p_vout->i_bytes_per_line / p_vout->i_bytes_per_pixel, p_pic->i_matrix_coefficients ); break; case YUV_444_PICTURE: p_vout->yuv.p_Convert444( p_vout, p_pic_data, p_pic->p_y, p_pic->p_u, p_pic->p_v, p_pic->i_width, p_pic->i_height, p_buffer->i_pic_width, p_buffer->i_pic_height, p_vout->i_bytes_per_line / p_vout->i_bytes_per_pixel, p_pic->i_matrix_coefficients ); break; #ifdef DEBUG default: intf_DbgMsg("error: unknown picture type %d\n", p_pic->i_type ); break; #endif } #ifdef DEBUG_VIDEO /* Print picture date and rendering time */ intf_DbgMsg("picture %p rendered in buffer %d (%ld us), display date: %s\n", p_pic, p_vout->i_buffer_index, (long) (mdate() - render_time), mstrtime( psz_date, p_pic->date )); #endif } /***************************************************************************** * RenderPictureInfo: print additionnal informations on a picture ***************************************************************************** * This function will print informations such as fps and other picture * dependant informations. *****************************************************************************/ static void RenderPictureInfo( vout_thread_t *p_vout, picture_t *p_pic ) { #if defined(STATS) || defined(DEBUG) char psz_buffer[256]; /* string buffer */ #endif #ifdef STATS /* * Print FPS rate in upper right corner */ if( p_vout->c_fps_samples > VOUT_FPS_SAMPLES ) { sprintf( psz_buffer, "%.2f fps", (double) VOUT_FPS_SAMPLES * 1000000 / ( p_vout->p_fps_sample[ (p_vout->c_fps_samples - 1) % VOUT_FPS_SAMPLES ] - p_vout->p_fps_sample[ p_vout->c_fps_samples % VOUT_FPS_SAMPLES ] ) ); Print( p_vout, 0, 0, RIGHT_RALIGN, TOP_RALIGN, psz_buffer ); } /* * Print frames count and loop time in upper left corner */ sprintf( psz_buffer, "%ld frames rendering: %ld us", (long) p_vout->c_fps_samples, (long) p_vout->render_time ); Print( p_vout, 0, 0, LEFT_RALIGN, TOP_RALIGN, psz_buffer ); #endif #ifdef DEBUG /* * Print picture information in lower right corner */ sprintf( psz_buffer, "%s picture %dx%d (%dx%d%+d%+d %s) -> %dx%d+%d+%d", (p_pic->i_type == YUV_420_PICTURE) ? "4:2:0" : ((p_pic->i_type == YUV_422_PICTURE) ? "4:2:2" : ((p_pic->i_type == YUV_444_PICTURE) ? "4:4:4" : "ukn-type")), p_pic->i_width, p_pic->i_height, p_pic->i_display_width, p_pic->i_display_height, p_pic->i_display_horizontal_offset, p_pic->i_display_vertical_offset, (p_pic->i_aspect_ratio == AR_SQUARE_PICTURE) ? "sq" : ((p_pic->i_aspect_ratio == AR_3_4_PICTURE) ? "4:3" : ((p_pic->i_aspect_ratio == AR_16_9_PICTURE) ? "16:9" : ((p_pic->i_aspect_ratio == AR_221_1_PICTURE) ? "2.21:1" : "ukn-ar" ))), p_vout->p_buffer[ p_vout->i_buffer_index ].i_pic_width, p_vout->p_buffer[ p_vout->i_buffer_index ].i_pic_height, p_vout->p_buffer[ p_vout->i_buffer_index ].i_pic_x, p_vout->p_buffer[ p_vout->i_buffer_index ].i_pic_y ); Print( p_vout, 0, 0, RIGHT_RALIGN, BOTTOM_RALIGN, psz_buffer ); #endif } /***************************************************************************** * RenderIdle: render idle picture ***************************************************************************** * This function will print something on the screen. It will return 0 if * nothing has been rendered, or 1 if something has been changed on the screen. * Note that if you absolutely want something to be printed, you will have * to force it by setting the last idle date to 0. * Unlike other rendering functions, this one calls the SetBufferPicture * function when needed. *****************************************************************************/ static int RenderIdle( vout_thread_t *p_vout ) { int i_x = 0, i_y = 0; /* text position */ int i_width, i_height; /* text size */ mtime_t current_date; /* current date */ const char *psz_text = "waiting for stream ..."; /* text to display */ current_date = mdate(); if( (current_date - p_vout->last_display_date) > VOUT_IDLE_DELAY && (current_date - p_vout->last_idle_date) > VOUT_IDLE_DELAY ) { SetBufferPicture( p_vout, NULL ); vout_TextSize( p_vout->p_large_font, WIDE_TEXT | OUTLINED_TEXT, psz_text, &i_width, &i_height ); if( !Align( p_vout, &i_x, &i_y, i_width, i_height, CENTER_RALIGN, CENTER_RALIGN ) ) { vout_Print( p_vout->p_large_font, p_vout->p_buffer[ p_vout->i_buffer_index ].p_data + i_x * p_vout->i_bytes_per_pixel + i_y * p_vout->i_bytes_per_line, p_vout->i_bytes_per_pixel, p_vout->i_bytes_per_line, p_vout->i_white_pixel, p_vout->i_gray_pixel, 0, WIDE_TEXT | OUTLINED_TEXT, psz_text ); SetBufferArea( p_vout, i_x, i_y, i_width, i_height ); } return( 1 ); } return( 0 ); } /***************************************************************************** * RenderInfo: render additionnal informations ***************************************************************************** * This function render informations which do not depend of the current picture * rendered. *****************************************************************************/ static void RenderInfo( vout_thread_t *p_vout ) { #ifdef DEBUG char psz_buffer[256]; /* string buffer */ int i_ready_pic = 0; /* ready pictures */ int i_reserved_pic = 0; /* reserved pictures */ int i_picture; /* picture index */ #endif #ifdef DEBUG /* * Print thread state in lower left corner */ for( i_picture = 0; i_picture < VOUT_MAX_PICTURES; i_picture++ ) { switch( p_vout->p_picture[i_picture].i_status ) { case RESERVED_PICTURE: case RESERVED_DATED_PICTURE: case RESERVED_DISP_PICTURE: i_reserved_pic++; break; case READY_PICTURE: i_ready_pic++; break; } } sprintf( psz_buffer, "pic: %d (%d/%d)/%d", p_vout->i_pictures, i_reserved_pic, i_ready_pic, VOUT_MAX_PICTURES ); Print( p_vout, 0, 0, LEFT_RALIGN, BOTTOM_RALIGN, psz_buffer ); #endif } /***************************************************************************** * RenderSubPicture: render a subpicture ***************************************************************************** * This function render a sub picture unit. *****************************************************************************/ static void RenderSubPicture( vout_thread_t *p_vout, subpicture_t *p_subpic ) { p_vout_font_t p_font; /* text font */ int i_width, i_height; /* subpicture dimensions */ switch( p_subpic->i_type ) { case TEXT_SUBPICTURE: /* single line text */ /* Select default font if not specified */ p_font = p_subpic->type.text.p_font; if( p_font == NULL ) { p_font = p_vout->p_default_font; } /* Computes text size (width and height fields are ignored) and print it */ vout_TextSize( p_font, p_subpic->type.text.i_style, p_subpic->p_data, &i_width, &i_height ); if( !Align( p_vout, &p_subpic->i_x, &p_subpic->i_y, i_width, i_height, p_subpic->i_horizontal_align, p_subpic->i_vertical_align ) ) { vout_Print( p_font, p_vout->p_buffer[ p_vout->i_buffer_index ].p_data + p_subpic->i_x * p_vout->i_bytes_per_pixel + p_subpic->i_y * p_vout->i_bytes_per_line, p_vout->i_bytes_per_pixel, p_vout->i_bytes_per_line, p_subpic->type.text.i_char_color, p_subpic->type.text.i_border_color, p_subpic->type.text.i_bg_color, p_subpic->type.text.i_style, p_subpic->p_data ); SetBufferArea( p_vout, p_subpic->i_x, p_subpic->i_y, i_width, i_height ); } break; #ifdef DEBUG default: intf_DbgMsg("error: unknown subpicture %p type %d\n", p_subpic, p_subpic->i_type ); #endif } } /***************************************************************************** * RenderInterface: render the interface ***************************************************************************** * This function render the interface, if any. *****************************************************************************/ static void RenderInterface( vout_thread_t *p_vout ) { int i_height, i_text_height; /* total and text height */ int i_width_1, i_width_2; /* text width */ int i_byte; /* byte index */ const char *psz_text_1 = "[1-9] Channel [i]nfo [c]olor [g/G]amma"; const char *psz_text_2 = "[+/-] Volume [m]ute [s]caling [Q]uit"; /* Get text size */ vout_TextSize( p_vout->p_large_font, OUTLINED_TEXT, psz_text_1, &i_width_1, &i_height ); vout_TextSize( p_vout->p_large_font, OUTLINED_TEXT, psz_text_2, &i_width_2, &i_text_height ); i_height += i_text_height; /* Render background */ for( i_byte = (p_vout->i_height - i_height) * p_vout->i_bytes_per_line; i_byte < p_vout->i_height * p_vout->i_bytes_per_line; i_byte++ ) { //?? noooo ! p_vout->p_buffer[ p_vout->i_buffer_index ].p_data[ i_byte ] = p_vout->i_blue_pixel; } /* Render text, if not larger than screen */ if( i_width_1 < p_vout->i_width ) { vout_Print( p_vout->p_large_font, p_vout->p_buffer[ p_vout->i_buffer_index ].p_data + (p_vout->i_height - i_height) * p_vout->i_bytes_per_line, p_vout->i_bytes_per_pixel, p_vout->i_bytes_per_line, p_vout->i_white_pixel, p_vout->i_black_pixel, 0, OUTLINED_TEXT, psz_text_1 ); } if( i_width_2 < p_vout->i_width ) { vout_Print( p_vout->p_large_font, p_vout->p_buffer[ p_vout->i_buffer_index ].p_data + (p_vout->i_height - i_height + i_text_height) * p_vout->i_bytes_per_line, p_vout->i_bytes_per_pixel, p_vout->i_bytes_per_line, p_vout->i_white_pixel, p_vout->i_black_pixel, 0, OUTLINED_TEXT, psz_text_2 ); } /* Activate modified area */ SetBufferArea( p_vout, 0, p_vout->i_height - i_height, p_vout->i_width, i_height ); } /***************************************************************************** * Synchronize: update synchro level depending of heap state ***************************************************************************** * This function is called during the main vout loop. *****************************************************************************/ static void Synchronize( vout_thread_t *p_vout, s64 i_delay ) { int i_synchro_inc = 0; //???? gore following //static int i_panic_count = 0; static int i_last_synchro_inc = 0; static float r_synchro_level = VOUT_SYNCHRO_LEVEL_START; static int i_truc = 1; //?? heap size is p_vout->i_pictures //?? if( i_delay < 0 ) { // intf_Msg("PANIC %d\n", i_panic_count++); } /* if( p_vout->i_pictures > VOUT_SYNCHRO_HEAP_IDEAL_SIZE+1 ) { i_synchro_inc++; } else if( p_vout->i_pictures < VOUT_SYNCHRO_HEAP_IDEAL_SIZE ) { i_synchro_inc--; } */ if( i_delay < 10000 ) { i_truc = 4; } if( i_delay < 20000 ) { i_synchro_inc--; } else if( i_delay > 50000 ) { i_synchro_inc++; } if( i_synchro_inc*i_last_synchro_inc < 0 ) { i_truc = 2; } else { i_truc *= 2; } if( i_truc > VOUT_SYNCHRO_LEVEL_MAX || i_delay == 0 ) { i_truc = 2; } r_synchro_level += (float)i_synchro_inc / i_truc; p_vout->i_synchro_level = (int) r_synchro_level; if( r_synchro_level > VOUT_SYNCHRO_LEVEL_MAX ) { r_synchro_level = VOUT_SYNCHRO_LEVEL_MAX; } // printf( "synchro level : %d, (%d, %d) (%d, %f) - %Ld\n", p_vout->i_synchro_level, // i_last_synchro_inc, i_synchro_inc, i_truc, r_synchro_level, i_delay ); i_last_synchro_inc = i_synchro_inc; } /***************************************************************************** * Manage: manage thread ***************************************************************************** * This function will handle changes in thread configuration. *****************************************************************************/ static int Manage( vout_thread_t *p_vout ) { #ifdef DEBUG_VIDEO if( p_vout->i_changes ) { intf_DbgMsg("changes: 0x%x (no display: 0x%x)\n", p_vout->i_changes, p_vout->i_changes & VOUT_NODISPLAY_CHANGE ); } #endif /* On gamma or grayscale change, rebuild tables */ if( p_vout->i_changes & (VOUT_GAMMA_CHANGE | VOUT_GRAYSCALE_CHANGE | VOUT_YUV_CHANGE) ) { if( vout_ResetYUV( p_vout ) ) { intf_ErrMsg("error: can't rebuild convertion tables\n"); return( 1 ); } } /* Clear changes flags which does not need management or have been * handled */ p_vout->i_changes &= ~(VOUT_GAMMA_CHANGE | VOUT_GRAYSCALE_CHANGE | VOUT_YUV_CHANGE | VOUT_INFO_CHANGE | VOUT_INTF_CHANGE | VOUT_SCALE_CHANGE ); /* Detect unauthorized changes */ if( p_vout->i_changes ) { /* Some changes were not acknowledged by p_vout->p_sys_manage or this * function, it means they should not be authorized */ intf_ErrMsg( "error: unauthorized changes in the video output thread\n" ); return( 1 ); } return( 0 ); } /***************************************************************************** * Align: align a subpicture in the screen ***************************************************************************** * This function is used for rendering text or subpictures. It returns non 0 * it the final aera is not fully included in display area. Return coordinates * are absolute. *****************************************************************************/ static int Align( vout_thread_t *p_vout, int *pi_x, int *pi_y, int i_width, int i_height, int i_h_align, int i_v_align ) { /* Align horizontally */ switch( i_h_align ) { case CENTER_ALIGN: *pi_x -= i_width / 2; break; case CENTER_RALIGN: *pi_x += (p_vout->i_width - i_width) / 2; break; case RIGHT_ALIGN: *pi_x -= i_width; break; case RIGHT_RALIGN: *pi_x += p_vout->i_width - i_width; break; } /* Align vertically */ switch( i_v_align ) { case CENTER_ALIGN: *pi_y -= i_height / 2; break; case CENTER_RALIGN: *pi_y += (p_vout->i_height - i_height) / 2; break; case BOTTOM_ALIGN: *pi_y -= i_height; break; case BOTTOM_RALIGN: *pi_y += p_vout->i_height - i_height; break; case SUBTITLE_RALIGN: *pi_y += (p_vout->i_height + p_vout->p_buffer[ p_vout->i_buffer_index ].i_pic_y + p_vout->p_buffer[ p_vout->i_buffer_index ].i_pic_height - i_height) / 2; break; } /* Return non 0 if clipping failed */ return( (*pi_x < 0) || (*pi_y < 0) || (*pi_x + i_width > p_vout->i_width) || (*pi_y + i_height > p_vout->i_height) ); } /***************************************************************************** * SetPalette: sets an 8 bpp palette ***************************************************************************** * This function is just a prototype that does nothing. Architectures that * support palette allocation should override it. *****************************************************************************/ static void SetPalette ( p_vout_thread_t p_vout, u16 *red, u16 *green, u16 *blue, u16 *transp ) { intf_ErrMsg( "SetPalette: method does not support palette changing\n" ); }