-/*****************************************************************************
- * Local prototypes
- *****************************************************************************/
-static void DrawRect( vout_thread_t *, subpicture_t *, int, int, int, int,
- short );
-static void DrawTriangle( vout_thread_t *, subpicture_t *, int, int, int, int,
- short );
-static void Render ( vout_thread_t *, picture_t *, const subpicture_t * );
-static void RenderI420( vout_thread_t *, picture_t *, const subpicture_t *,
- int );
-static void RenderYUY2( vout_thread_t *, picture_t *, const subpicture_t *,
- int );
-static void RenderRV32( vout_thread_t *, picture_t *, const subpicture_t *,
- int );
-static subpicture_t *vout_CreateWidget( vout_thread_t *, int );
-static void FreeWidget( subpicture_t * );
-
-/**
- * Private data in a subpicture.
- */
-struct subpicture_sys_t
-{
- int i_x;
- int i_y;
- int i_width;
- int i_height;
- uint8_t *p_pic;
-};
-
-/*****************************************************************************
- * Draws a rectangle at the given position in the subpic.
- * It may be filled (fill == STYLE_FILLED) or empty (fill == STYLE_EMPTY).
- *****************************************************************************/
-static void DrawRect( vout_thread_t *p_vout, subpicture_t *p_subpic,
- int i_x1, int i_y1, int i_x2, int i_y2, short fill )
-{
- int x, y;
- subpicture_sys_t *p_widget = p_subpic->p_sys;
-
- if( fill == STYLE_FILLED )
- {
- for( y = i_y1; y <= i_y2; y++ )
- {
- for( x = i_x1; x <= i_x2; x++ )
- {
- p_widget->p_pic[ x + p_widget->i_width * y ] = 1;
- }
- }
- }
- else
- {
- for( y = i_y1; y <= i_y2; y++ )
- {
- p_widget->p_pic[ i_x1 + p_widget->i_width * y ] = 1;
- p_widget->p_pic[ i_x2 + p_widget->i_width * y ] = 1;
- }
- for( x = i_x1; x <= i_x2; x++ )
- {
- p_widget->p_pic[ x + p_widget->i_width * i_y1 ] = 1;
- p_widget->p_pic[ x + p_widget->i_width * i_y2 ] = 1;
- }
- }
-}
-
-/*****************************************************************************
- * Draws a triangle at the given position in the subpic.
- * It may be filled (fill == STYLE_FILLED) or empty (fill == STYLE_EMPTY).
- *****************************************************************************/
-static void DrawTriangle( vout_thread_t *p_vout, subpicture_t *p_subpic,
- int i_x1, int i_y1, int i_x2, int i_y2, short fill )
-{
- int x, y, i_mid, h;
- subpicture_sys_t *p_widget = p_subpic->p_sys;
-
- i_mid = i_y1 + ( ( i_y2 - i_y1 ) >> 1 );
-
- if( i_x2 >= i_x1 )
- {
- if( fill == STYLE_FILLED )
- {
- for( y = i_y1; y <= i_mid; y++ )
- {
- h = y - i_y1;
- for( x = i_x1; x <= i_x1 + h && x <= i_x2; x++ )
- {
- p_widget->p_pic[ x + p_widget->i_width * y ] = 1;
- p_widget->p_pic[ x + p_widget->i_width * ( i_y2 - h ) ] = 1;
- }
- }
- }
- else
- {
- for( y = i_y1; y <= i_mid; y++ )
- {
- h = y - i_y1;
- p_widget->p_pic[ i_x1 + p_widget->i_width * y ] = 1;
- p_widget->p_pic[ i_x1 + h + p_widget->i_width * y ] = 1;
- p_widget->p_pic[ i_x1 + p_widget->i_width * ( i_y2 - h ) ] = 1;
- p_widget->p_pic[ i_x1 + h + p_widget->i_width * ( i_y2 - h ) ] = 1;
- }
- }
- }
- else
- {
- if( fill == STYLE_FILLED )
- {
- for( y = i_y1; y <= i_mid; y++ )
- {
- h = y - i_y1;
- for( x = i_x1; x >= i_x1 - h && x >= i_x2; x-- )
- {
- p_widget->p_pic[ x + p_widget->i_width * y ] = 1;
- p_widget->p_pic[ x + p_widget->i_width * ( i_y2 - h ) ] = 1;
- }
- }
- }
- else
- {
- for( y = i_y1; y <= i_mid; y++ )
- {
- h = y - i_y1;
- p_widget->p_pic[ i_x1 + p_widget->i_width * y ] = 1;
- p_widget->p_pic[ i_x1 - h + p_widget->i_width * y ] = 1;
- p_widget->p_pic[ i_x1 + p_widget->i_width * ( i_y2 - h ) ] = 1;
- p_widget->p_pic[ i_x1 - h + p_widget->i_width * ( i_y2 - h ) ] = 1;
- }
- }
- }
-}
-
-/*****************************************************************************
- * Render: place widget in picture
- *****************************************************************************
- * This function merges the previously drawn widget into a picture
- *****************************************************************************/
-static void Render( vout_thread_t *p_vout, picture_t *p_pic,
- const subpicture_t *p_subpic )
-{
- int i_fade_alpha = 255;
- mtime_t i_fade_start = ( p_subpic->i_stop + p_subpic->i_start ) / 2;
- mtime_t i_now = mdate();
-
- if( i_now >= i_fade_start )
- {
- i_fade_alpha = 255 * ( p_subpic->i_stop - i_now ) /
- ( p_subpic->i_stop - i_fade_start );
- }
-
- switch( p_vout->output.i_chroma )
- {
- /* I420 target, no scaling */
- case VLC_FOURCC('I','4','2','0'):
- case VLC_FOURCC('I','Y','U','V'):
- case VLC_FOURCC('Y','V','1','2'):
- RenderI420( p_vout, p_pic, p_subpic, i_fade_alpha );
- break;
- /* RV32 target, scaling */
- case VLC_FOURCC('R','V','2','4'):
- case VLC_FOURCC('R','V','3','2'):
- RenderRV32( p_vout, p_pic, p_subpic, i_fade_alpha );
- break;
- /* NVidia or BeOS overlay, no scaling */
- case VLC_FOURCC('Y','U','Y','2'):
- RenderYUY2( p_vout, p_pic, p_subpic, i_fade_alpha );
- break;
-
- default:
- msg_Err( p_vout, "unknown chroma, can't render SPU" );
- break;
- }
-}
-
-/**
- * Draw a widget on a I420 (or similar) picture
- */
-static void RenderI420( vout_thread_t *p_vout, picture_t *p_pic,
- const subpicture_t *p_subpic, int i_fade_alpha )
-{
- subpicture_sys_t *p_widget = p_subpic->p_sys;
- int i_plane, x, y, pen_x, pen_y;
-
- for( i_plane = 0 ; i_plane < p_pic->i_planes ; i_plane++ )
- {
- uint8_t *p_in = p_pic->p[ i_plane ].p_pixels;
- int i_pic_pitch = p_pic->p[ i_plane ].i_pitch;
-
- if ( i_plane == 0 )
- {
- pen_x = p_widget->i_x;
- pen_y = p_widget->i_y;
-#define alpha p_widget->p_pic[ x + y * p_widget->i_width ] * i_fade_alpha
-#define pixel p_in[ ( pen_y + y ) * i_pic_pitch + pen_x + x ]
- for( y = 0; y < p_widget->i_height; y++ )
- {
- for( x = 0; x < p_widget->i_width; x++ )
- {
- if( alpha == 0 ) continue;
- pen_y--;
- pixel = ( ( pixel * ( 255 - alpha ) ) >> 8 );
- pen_y++; pen_x--;
- pixel = ( ( pixel * ( 255 - alpha ) ) >> 8 );
- pen_x += 2;
- pixel = ( ( pixel * ( 255 - alpha ) ) >> 8 );
- pen_y++; pen_x--;
- pixel = ( ( pixel * ( 255 - alpha ) ) >> 8 );
- pen_y--;
- }
- }
- for( y = 0; y < p_widget->i_height; y++ )
- {
- for( x = 0; x < p_widget->i_width; x++ )
- {
- pixel = ( ( pixel * ( 255 - alpha ) ) >> 8 ) +
- ( 255 * alpha >> 8 );
- }
- }
-#undef alpha
-#undef pixel
- }
- else
- {
- pen_x = p_widget->i_x >> 1;
- pen_y = p_widget->i_y >> 1;
-#define alpha p_widget->p_pic[ x + y * p_widget->i_width ] * i_fade_alpha
-#define pixel p_in[ ( pen_y + (y >> 1) ) * i_pic_pitch + pen_x + (x >> 1) ]
- for( y = 0; y < p_widget->i_height; y+=2 )
- {
- for( x = 0; x < p_widget->i_width; x+=2 )
- {
- if( alpha == 0 ) continue;
- pixel = ( ( pixel * ( 0xFF - alpha ) ) >> 8 ) +
- ( 0x80 * alpha >> 8 );
- }
- }
-#undef alpha
-#undef pixel
- }
- }
-
-}
-
-/**
- * Draw a widget on a YUY2 picture
- */
-static void RenderYUY2( vout_thread_t *p_vout, picture_t *p_pic,
- const subpicture_t *p_subpic, int i_fade_alpha )
-{
- subpicture_sys_t *p_widget = p_subpic->p_sys;
- int x, y, pen_x, pen_y;
- uint8_t *p_in = p_pic->p[0].p_pixels;
- int i_pic_pitch = p_pic->p[0].i_pitch;
-
- pen_x = p_widget->i_x;
- pen_y = p_widget->i_y;
-#define alpha p_widget->p_pic[ x + y * p_widget->i_width ] * i_fade_alpha
-#define pixel p_in[ ( pen_y + y ) * i_pic_pitch + 2 * ( pen_x + x ) ]
- for( y = 0; y < p_widget->i_height; y++ )
- {
- for( x = 0; x < p_widget->i_width; x++ )
- {
- pen_y--;
- pixel = ( ( pixel * ( 255 - alpha ) ) >> 8 );
- pen_y++; pen_x--;
- pixel = ( ( pixel * ( 255 - alpha ) ) >> 8 );
- pen_x += 2;
- pixel = ( ( pixel * ( 255 - alpha ) ) >> 8 );
- pen_y++; pen_x--;
- pixel = ( ( pixel * ( 255 - alpha ) ) >> 8 );
- pen_y--;
- }
- }
- for( y = 0; y < p_widget->i_height; y++ )
- {
- for( x = 0; x < p_widget->i_width; x++ )
- {
- pixel = ( ( pixel * ( 255 - alpha ) ) >> 8 ) +
- ( 255 * alpha >> 8 );
- }
- }
-#undef alpha
-#undef pixel
-}
-
-/**
- * Draw a widget on a RV32 picture
- */
-static void RenderRV32( vout_thread_t *p_vout, picture_t *p_pic,
- const subpicture_t *p_subpic, int i_fade_alpha )
-{
- subpicture_sys_t *p_widget = p_subpic->p_sys;
- int x, y, pen_x, pen_y;
- uint8_t *p_in = p_pic->p[0].p_pixels;
- int i_pic_pitch = p_pic->p[0].i_pitch;
-
- pen_x = p_widget->i_x;
- pen_y = p_widget->i_y;
-
-#define alpha p_widget->p_pic[ x + y * p_widget->i_width ] * i_fade_alpha
-#define pixel( c ) p_in[ ( pen_y + y ) * i_pic_pitch + 4 * ( pen_x + x ) + c ]
- for(y = 0; y < p_widget->i_height; y++ )
- {
- for( x = 0; x < p_widget->i_width; x++ )
- {
- pen_y--;
- pixel( 0 ) = ( ( pixel( 0 ) * ( 255 - alpha ) ) >> 8 );
- pixel( 1 ) = ( ( pixel( 1 ) * ( 255 - alpha ) ) >> 8 );
- pixel( 2 ) = ( ( pixel( 2 ) * ( 255 - alpha ) ) >> 8 );
- pen_y++; pen_x--;
- pixel( 0 ) = ( ( pixel( 0 ) * ( 255 - alpha ) ) >> 8 );
- pixel( 1 ) = ( ( pixel( 1 ) * ( 255 - alpha ) ) >> 8 );
- pixel( 2 ) = ( ( pixel( 2 ) * ( 255 - alpha ) ) >> 8 );
- pen_x += 2;
- pixel( 0 ) = ( ( pixel( 0 ) * ( 255 - alpha ) ) >> 8 );
- pixel( 1 ) = ( ( pixel( 1 ) * ( 255 - alpha ) ) >> 8 );
- pixel( 2 ) = ( ( pixel( 2 ) * ( 255 - alpha ) ) >> 8 );
- pen_y++; pen_x--;
- pixel( 0 ) = ( ( pixel( 0 ) * ( 255 - alpha ) ) >> 8 );
- pixel( 1 ) = ( ( pixel( 1 ) * ( 255 - alpha ) ) >> 8 );
- pixel( 2 ) = ( ( pixel( 2 ) * ( 255 - alpha ) ) >> 8 );
- pen_y--;
- }
- }
- for(y = 0; y < p_widget->i_height; y++ )
- {
- for( x = 0; x < p_widget->i_width; x++ )
- {
- pixel( 0 ) = ( ( pixel( 0 ) * ( 255 - alpha ) ) >> 8 ) +
- ( 255 * alpha >> 8 );
- pixel( 1 ) = ( ( pixel( 1 ) * ( 255 - alpha ) ) >> 8 ) +
- ( 255 * alpha >> 8 );
- pixel( 2 ) = ( ( pixel( 2 ) * ( 255 - alpha ) ) >> 8 ) +
- ( 255 * alpha >> 8 );
- }
- }
-#undef alpha
-#undef pixel
-}
-
-/*****************************************************************************
- * Creates and initializes an OSD widget.
- *****************************************************************************/
-subpicture_t *vout_CreateWidget( vout_thread_t *p_vout, int i_channel )
-{
- subpicture_t *p_subpic;
- subpicture_sys_t *p_widget;
- mtime_t i_now = mdate();
-
- p_subpic = 0;
- p_widget = 0;
-
- /* Create and initialize a subpicture */
- p_subpic = vout_CreateSubPicture( p_vout, i_channel, MEMORY_SUBPICTURE );
- if( p_subpic == NULL )
- {
- return NULL;
- }
- p_subpic->pf_render = Render;
- p_subpic->pf_destroy = FreeWidget;
- p_subpic->i_start = i_now;
- p_subpic->i_stop = i_now + 1200000;
- p_subpic->b_ephemer = VLC_FALSE;
-
- p_widget = malloc( sizeof(subpicture_sys_t) );
- if( p_widget == NULL )
- {
- FreeWidget( p_subpic );
- vout_DestroySubPicture( p_vout, p_subpic );
- return NULL;
- }
- p_subpic->p_sys = p_widget;
-
- return p_subpic;
-}