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Commit 09b646af authored by Jean-Paul Saman's avatar Jean-Paul Saman
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Cleanup and add workaround for FPGA bug.

parent 4dd87e5b
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Showing with 69 additions and 22 deletions
modules/gui/fbosd.c
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/*****************************************************************************
* fbosd.c : framebuffer osd plugin for vlc
*****************************************************************************
* Copyright (C) 2007, the VideoLAN team
* Copyright (C) 2007-2008, the VideoLAN team
* $Id$
*
* Authors: Jean-Paul Saman
......@@ -50,7 +50,7 @@
#include <vlc_osd.h>
#include <vlc_strings.h>
// #define FBOSD_BLENDING 1
// #define FBOSD_BLENDING
/*****************************************************************************
* Local prototypes
......@@ -66,7 +66,7 @@ static int OpenDisplay ( intf_thread_t * );
static void CloseDisplay ( intf_thread_t * );
/* Load modules needed for rendering and blending */
#ifdef FBOSD_BLENDING
#if defined(FBOSD_BLENDING)
static int OpenBlending ( intf_thread_t * );
static void CloseBlending ( intf_thread_t * );
#endif
......@@ -91,7 +91,7 @@ static void SetOverlayTransparency( intf_thread_t *,
static picture_t *LoadImage( intf_thread_t *, video_format_t *,
char * );
#ifdef FBOSD_BLENDING
#if defined(FBOSD_BLENDING)
static int BlendPicture( intf_thread_t *, video_format_t *,
video_format_t *, picture_t *, picture_t * );
#else
......@@ -192,7 +192,7 @@ vlc_module_begin();
add_string( "fbosd-text", NULL, NULL, FBOSD_TEXT,
FBOSD_LONGTEXT, true );
#ifdef FBOSD_BLENDING
#if defined(FBOSD_BLENDING)
add_integer_with_range( "fbosd-alpha", 255, 0, 255, NULL, ALPHA_TEXT,
ALPHA_LONGTEXT, true );
......@@ -275,7 +275,7 @@ struct intf_sys_t
/* Image and Picture rendering */
image_handler_t *p_image;
#ifdef FBOSD_BLENDING
#if defined(FBOSD_BLENDING)
filter_t *p_blend; /* alpha blending module */
#endif
filter_t *p_text; /* text renderer module */
......@@ -344,7 +344,7 @@ static int Create( vlc_object_t *p_this )
return VLC_ENOMEM;
}
#ifdef FBOSD_BLENDING
#if defined(FBOSD_BLENDING)
p_sys->i_alpha = var_CreateGetIntegerCommand( p_intf, "fbosd-alpha" );
var_AddCallback( p_intf, "fbosd-alpha", OverlayCallback, NULL );
#else
......@@ -453,7 +453,7 @@ static int Create( vlc_object_t *p_this )
Init( p_intf );
#ifdef FBOSD_BLENDING
#if defined(FBOSD_BLENDING)
/* Load the blending module */
if( OpenBlending( p_intf ) )
{
......@@ -500,7 +500,7 @@ static void Destroy( vlc_object_t *p_this )
p_sys->b_render = false;
p_sys->b_clear = false;
#ifdef FBOSD_BLENDING
#if defined(FBOSD_BLENDING)
var_DelCallback( p_intf, "fbosd-alpha", OverlayCallback, NULL );
var_Destroy( p_intf, "fbosd-alpha" );
#endif
......@@ -539,7 +539,7 @@ static void Destroy( vlc_object_t *p_this )
p_sys->render[i].i_state = FBOSD_STATE_FREE;
}
#ifdef FBOSD_BLENDING
#if defined(FBOSD_BLENDING)
if( p_sys->p_blend ) CloseBlending( p_intf );
#endif
if( p_sys->p_text ) CloseTextRenderer( p_intf );
......@@ -555,7 +555,7 @@ static void Destroy( vlc_object_t *p_this )
free( p_sys );
}
#ifdef FBOSD_BLENDING
#if defined(FBOSD_BLENDING)
static int OpenBlending( intf_thread_t *p_intf )
{
if( p_intf->p_sys->p_blend ) return VLC_EGENERIC;
......@@ -770,7 +770,7 @@ static void SetOverlayTransparency( intf_thread_t *p_intf,
}
}
#ifdef FBOSD_BLENDING
#if defined(FBOSD_BLENDING)
/*****************************************************************************
* BlendPicture: Blend two pictures together..
*****************************************************************************/
......@@ -822,6 +822,51 @@ static int BlendPicture( intf_thread_t *p_intf, video_format_t *p_fmt_src,
}
#endif
static int InvertAlpha( intf_thread_t *p_intf, picture_t **p_pic, video_format_t fmt )
{
uint8_t *p_begin = NULL, *p_end = NULL;
uint8_t i_skip = 0;
if( *p_pic && ((*p_pic)->i_planes != 1) )
{
msg_Err( p_intf,
"cannot invert alpha channel too many planes %d (only 1 supported)",
(*p_pic)->i_planes );
return VLC_EGENERIC;
}
switch( fmt.i_chroma )
{
case VLC_FOURCC('R','V','2','4'):
p_begin = (uint8_t *)(*p_pic)->p[Y_PLANE].p_pixels;
p_end = (uint8_t *)(*p_pic)->p[Y_PLANE].p_pixels +
( fmt.i_height * (*p_pic)->p[Y_PLANE].i_pitch );
i_skip = 3;
break;
case VLC_FOURCC('R','V','3','2'):
p_begin = (uint8_t *)(*p_pic)->p[Y_PLANE].p_pixels;
p_end = (uint8_t *)(*p_pic)->p[Y_PLANE].p_pixels +
( fmt.i_height * (*p_pic)->p[Y_PLANE].i_pitch );
i_skip = 4;
break;
default:
msg_Err( p_intf, "cannot invert alpha channel chroma not supported %4.4s",
(char *)&fmt.i_chroma );
return VLC_EGENERIC;
}
for( ; p_begin < p_end; p_begin += i_skip )
{
uint8_t i_opacity;
if( i_opacity != 0xFF )
i_opacity = 255 - *p_begin;
*p_begin = i_opacity;
}
/* end of kludge */
return VLC_SUCCESS;
}
/*****************************************************************************
* RenderPicture: Render the picture into the p_dest buffer.
* We don't take transparent pixels into account, so we don't have to blend
......@@ -922,11 +967,7 @@ static picture_t *RenderText( intf_thread_t *p_intf, const char *psz_string,
p_sys->p_text->pf_render_text( p_sys->p_text,
p_region, p_region );
#ifndef FBOSD_BLENDING
fmt_out.i_chroma = p_fmt->i_chroma;
p_dest = ConvertImage( p_intf, &p_region->picture,
&p_region->fmt, &fmt_out );
#else
#if defined(FBOSD_BLENDING)
fmt_out = p_region->fmt;
fmt_out.i_bits_per_pixel = 32;
vlc_memcpy( p_fmt, &fmt_out, sizeof(video_format_t) );
......@@ -941,6 +982,10 @@ static picture_t *RenderText( intf_thread_t *p_intf, const char *psz_string,
return NULL;
}
vout_CopyPicture( VLC_OBJECT(p_intf), p_dest, &p_region->picture );
#else
fmt_out.i_chroma = p_fmt->i_chroma;
p_dest = ConvertImage( p_intf, &p_region->picture,
&p_region->fmt, &fmt_out );
#endif
if( p_region->picture.pf_release )
p_region->picture.pf_release( &p_region->picture );
......@@ -980,7 +1025,7 @@ static picture_t *LoadImage( intf_thread_t *p_intf, video_format_t *p_fmt,
return p_pic;
}
#ifndef FBOSD_BLENDING
#if ! defined(FBOSD_BLENDING)
/*****************************************************************************
* Convertmage: Convert image to another fourcc
*****************************************************************************/
......@@ -1243,7 +1288,7 @@ static void Render( intf_thread_t *p_intf, struct fbosd_render_t *render )
else if( render->i_type == FBOSD_RENDER_TEXT )
{
picture_t *p_text;
#ifdef FBOSD_BLENDING
#if defined(FBOSD_BLENDING)
video_format_t fmt_in;
memset( &fmt_in, 0, sizeof(video_format_t) );
p_text = RenderText( p_intf, render->psz_string, &render->text_style,
......@@ -1280,9 +1325,7 @@ static void RenderClear( intf_thread_t *p_intf, struct fbosd_render_t *render )
render->i_x = p_sys->i_x;
render->i_y = p_sys->i_y;
render->i_pos = p_sys->i_pos;
#ifdef FBOSD_BLENDING
render->i_alpha = p_sys->i_alpha;
#endif
render->b_absolute = p_sys->b_absolute;
render->i_state = FBOSD_STATE_FREE;
}
......@@ -1340,6 +1383,10 @@ static void Run( intf_thread_t *p_intf )
isRendererReady( p_intf ) )
{
int ret;
#if defined(FBOSD_BLENDING)
/* Reverse alpha channel to work around FPGA bug */
InvertAlpha( p_intf, &p_sys->p_overlay, p_sys->fmt_out );
#endif
ret = write( p_sys->i_fd, p_sys->p_overlay->p[0].p_pixels,
p_sys->i_page_size );
if( ret < 0 )
......@@ -1460,7 +1507,7 @@ static int OverlayCallback( vlc_object_t *p_this, char const *psz_cmd,
{
p_sys->render[i].text_style.i_font_alpha = 255 - newval.i_int;
}
#ifdef FBOSD_BLENDING
#if defined(FBOSD_BLENDING)
else if( !strncmp( psz_cmd, "fbosd-alpha", 11 ) )
{
p_sys->render[i].i_alpha = newval.i_int;
......
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