Commit 1eead51a authored by dionoea's avatar dionoea

Video filter fixes:

 * colorthres.c: validate input chroma.
 * erase.c: fix bluring application limit (prevents out of bounds access).
 * gaussianblur.c: validate input chroma and add planar YUV 4:2:2 support.
 * psychedelic.c: check image_Convert return value (it fails for I422 which would then trigger a segfault due to a NULL pointer being dereferenced).
 * rotate.c: validate input chroma, add planar YUV 4:2:2 support and misc code fixes or simplifications.
parent 3510dc7c
......@@ -94,7 +94,13 @@ static int Create( vlc_object_t *p_this )
filter_t *p_filter = (filter_t *)p_this;
/* XXX: we might need to add/remove some FOURCCs ... */
if( p_filter->fmt_in.video.i_chroma != VLC_FOURCC('I','4','2','0') )
if( p_filter->fmt_in.video.i_chroma != VLC_FOURCC('I','4','2','0')
&& p_filter->fmt_in.video.i_chroma != VLC_FOURCC('I','Y','U','V')
&& p_filter->fmt_in.video.i_chroma != VLC_FOURCC('J','4','2','0')
&& p_filter->fmt_in.video.i_chroma != VLC_FOURCC('Y','V','1','2')
&& p_filter->fmt_in.video.i_chroma != VLC_FOURCC('I','4','2','2')
&& p_filter->fmt_in.video.i_chroma != VLC_FOURCC('J','4','2','2') )
{
msg_Err( p_filter, "Unsupported input chroma (%4s)",
(char*)&(p_filter->fmt_in.video.i_chroma) );
......
......@@ -383,7 +383,7 @@ static void FilterErase( filter_t *p_filter, picture_t *p_inpic,
i_height = __MIN( i_visible_lines - i_y - 2, i_height );
/* Make sure that we start at least 2 lines from the top (since our
* bluring algorithm uses the 2 previous lines) */
y = __MAX(i_y-2,0);
y = __MAX(i_y,2);
p_outpix = p_outpic->p[i_plane].p_pixels + (i_y+y)*i_pitch + i_x;
for( ; y < i_height; y++, p_mask += i_mask_pitch, p_outpix += i_pitch )
{
......
......@@ -123,6 +123,27 @@ static int Create( vlc_object_t *p_this )
{
filter_t *p_filter = (filter_t *)p_this;
if( p_filter->fmt_in.video.i_chroma != VLC_FOURCC('I','4','2','0')
&& p_filter->fmt_in.video.i_chroma != VLC_FOURCC('I','Y','U','V')
&& p_filter->fmt_in.video.i_chroma != VLC_FOURCC('J','4','2','0')
&& p_filter->fmt_in.video.i_chroma != VLC_FOURCC('Y','V','1','2')
&& p_filter->fmt_in.video.i_chroma != VLC_FOURCC('I','4','2','2')
&& p_filter->fmt_in.video.i_chroma != VLC_FOURCC('J','4','2','2')
)
{
/* We only want planar YUV 4:2:0 or 4:2:2 */
msg_Err( p_filter, "Unsupported input chroma (%4s)",
(char*)&(p_filter->fmt_in.video.i_chroma) );
return VLC_EGENERIC;
}
if( p_filter->fmt_in.video.i_chroma != p_filter->fmt_out.video.i_chroma )
{
msg_Err( p_filter, "Input and output chromas don't match" );
return VLC_EGENERIC;
}
p_filter->p_sys = malloc( sizeof( filter_sys_t ) );
if( p_filter->p_sys == NULL )
{
......@@ -286,7 +307,8 @@ static picture_t *Filter( filter_t *p_filter, picture_t *p_pic )
const int i_pitch = p_pic->p[i_plane].i_pitch;
int i_line, i_col;
const int factor = i_plane ? 1 : 0;
const int x_factor = p_pic->p[Y_PLANE].i_visible_pitch/i_visible_pitch-1;
const int y_factor = p_pic->p[Y_PLANE].i_visible_lines/i_visible_lines-1;
for( i_line = 0 ; i_line < i_visible_lines ; i_line++ )
{
......@@ -299,16 +321,16 @@ static picture_t *Filter( filter_t *p_filter, picture_t *p_pic )
#endif
int x;
const int c = i_line*i_pitch+i_col;
for( x = __MAX( -i_dim, -i_col*(factor+1) );
x <= __MIN( i_dim, (i_visible_pitch - i_col)*(factor+1) + 1 );
for( x = __MAX( -i_dim, -i_col*(x_factor+1) );
x <= __MIN( i_dim, (i_visible_pitch - i_col)*(x_factor+1) + 1 );
x++ )
{
#ifdef DONT_USE_FLOATS
value += pi_distribution[x+i_dim]
* p_in[c+(x>>factor)];
* p_in[c+(x>>x_factor)];
#else
value += pf_distribution[x+i_dim]
* (float)p_in[c+(x>>factor)];
* (float)p_in[c+(x>>x_factor)];
#endif
}
#ifdef DONT_USE_FLOATS
......@@ -329,22 +351,22 @@ static picture_t *Filter( filter_t *p_filter, picture_t *p_pic )
#endif
int y;
const int c = i_line*i_pitch+i_col;
for( y = __MAX( -i_dim, (-i_line)*(factor+1) );
y <= __MIN( i_dim, (i_visible_lines - i_line)*(factor+1) - 1 );
for( y = __MAX( -i_dim, (-i_line)*(y_factor+1) );
y <= __MIN( i_dim, (i_visible_lines - i_line)*(y_factor+1) - 1 );
y++ )
{
#ifdef DONT_USE_FLOATS
value += pi_distribution[y+i_dim]
* pi_buffer[c+(y>>factor)*i_pitch];
* pi_buffer[c+(y>>y_factor)*i_pitch];
#else
value += pf_distribution[y+i_dim]
* pf_buffer[c+(y>>factor)*i_pitch];
* pf_buffer[c+(y>>y_factor)*i_pitch];
#endif
}
#ifdef DONT_USE_FLOATS
p_out[c] = (uint8_t)(value/pi_scale[(i_line<<factor)*(i_pitch<<factor)+(i_col<<factor)]);
p_out[c] = (uint8_t)(value/pi_scale[(i_line<<y_factor)*(i_pitch<<x_factor)+(i_col<<x_factor)]);
#else
p_out[c] = (uint8_t)(value*pf_scale[(i_line<<factor)*(i_pitch<<factor)+(i_col<<factor)]);
p_out[c] = (uint8_t)(value*pf_scale[(i_line<<y_factor)*(i_pitch<<x_factor)+(i_col<<x_factor)]);
#endif
}
}
......
......@@ -184,6 +184,8 @@ static picture_t *Filter( filter_t *p_filter, picture_t *p_pic )
p_converted = image_Convert( p_filter->p_sys->p_image, p_pic,
&(p_pic->format), &fmt_out );
if( p_converted )
{
#define copyimage( plane, b ) \
for( y=0; y<p_converted->p[plane].i_visible_lines; y++) { \
for( x=0; x<p_converted->p[plane].i_visible_pitch; x++) { \
......@@ -204,6 +206,11 @@ static picture_t *Filter( filter_t *p_filter, picture_t *p_pic )
#undef copyimage
p_converted->pf_release( p_converted );
}
else
{
msg_Err( p_filter, "Image scaling failed miserably." );
}
p_filter->p_sys->x += p_filter->p_sys->xinc;
p_filter->p_sys->y += p_filter->p_sys->yinc;
......
......@@ -63,7 +63,7 @@ vlc_module_begin();
set_category( CAT_VIDEO );
set_subcategory( SUBCAT_VIDEO_VFILTER );
add_integer_with_range( FILTER_PREFIX "angle", 0, 0, 359, NULL,
add_integer_with_range( FILTER_PREFIX "angle", 30, 0, 359, NULL,
ANGLE_TEXT, ANGLE_LONGTEXT, VLC_FALSE );
add_shortcut( "rotate" );
......@@ -99,6 +99,27 @@ static int Create( vlc_object_t *p_this )
filter_t *p_filter = (filter_t *)p_this;
filter_sys_t *p_sys;
if( p_filter->fmt_in.video.i_chroma != VLC_FOURCC('I','4','2','0')
&& p_filter->fmt_in.video.i_chroma != VLC_FOURCC('I','Y','U','V')
&& p_filter->fmt_in.video.i_chroma != VLC_FOURCC('J','4','2','0')
&& p_filter->fmt_in.video.i_chroma != VLC_FOURCC('Y','V','1','2')
&& p_filter->fmt_in.video.i_chroma != VLC_FOURCC('I','4','2','2')
&& p_filter->fmt_in.video.i_chroma != VLC_FOURCC('J','4','2','2')
)
{
/* We only want planar YUV 4:2:0 or 4:2:2 */
msg_Err( p_filter, "Unsupported input chroma (%4s)",
(char*)&(p_filter->fmt_in.video.i_chroma) );
return VLC_EGENERIC;
}
if( p_filter->fmt_in.video.i_chroma != p_filter->fmt_out.video.i_chroma )
{
msg_Err( p_filter, "Input and output chromas don't match" );
return VLC_EGENERIC;
}
/* Allocate structure */
p_filter->p_sys = malloc( sizeof( filter_sys_t ) );
if( p_filter->p_sys == NULL )
......@@ -113,9 +134,11 @@ static int Create( vlc_object_t *p_this )
p_sys->i_angle = var_CreateGetIntegerCommand( p_filter,
FILTER_PREFIX "angle" ) * 10;
var_CreateGetIntegerCommand( p_filter, FILTER_PREFIX "deciangle" );
var_Create( p_filter, FILTER_PREFIX "deciangle",
VLC_VAR_INTEGER|VLC_VAR_ISCOMMAND );
var_AddCallback( p_filter, FILTER_PREFIX "angle", RotateCallback, p_sys );
var_AddCallback( p_filter, FILTER_PREFIX "deciangle", PreciseRotateCallback, p_sys );
var_AddCallback( p_filter, FILTER_PREFIX "deciangle",
PreciseRotateCallback, p_sys );
cache_trigo( p_sys->i_angle, &p_sys->i_sin, &p_sys->i_cos );
......@@ -162,6 +185,9 @@ static picture_t *Filter( filter_t *p_filter, picture_t *p_pic )
const int i_pitch = p_pic->p[i_plane].i_pitch;
const int i_hidden_pitch = i_pitch - i_visible_pitch;
const int i_aspect = ( i_visible_lines * p_pic->p[Y_PLANE].i_visible_pitch ) / ( p_pic->p[Y_PLANE].i_visible_lines * i_visible_pitch );
/* = 2 for U and V planes in YUV 4:2:2, = 1 otherwise */
const int i_line_center = i_visible_lines>>1;
const int i_col_center = i_visible_pitch>>1;
......@@ -172,11 +198,11 @@ static picture_t *Filter( filter_t *p_filter, picture_t *p_pic )
const uint8_t black_pixel = ( i_plane == Y_PLANE ) ? 0x00 : 0x80;
const int i_line_next = i_cos-i_sin*i_visible_pitch;
const int i_col_next = -i_sin-i_cos*i_visible_pitch;
int i_line_orig0 = - i_cos * i_line_center
- i_sin * i_col_center + (1<<11);
int i_col_orig0 = i_sin * i_line_center
const int i_line_next = i_cos / i_aspect -i_sin*i_visible_pitch;
const int i_col_next = -i_sin / i_aspect -i_cos*i_visible_pitch;
int i_line_orig0 = ( - i_cos * i_line_center / i_aspect
- i_sin * i_col_center + (1<<11) );
int i_col_orig0 = i_sin * i_line_center / i_aspect
- i_cos * i_col_center + (1<<11);
for( ; p_outendline < p_outend;
p_out += i_hidden_pitch, p_outendline += i_pitch,
......@@ -185,7 +211,7 @@ static picture_t *Filter( filter_t *p_filter, picture_t *p_pic )
for( ; p_out < p_outendline;
p_out++, i_line_orig0 += i_sin, i_col_orig0 += i_cos )
{
const int i_line_orig = (i_line_orig0>>12) + i_line_center;
const int i_line_orig = (i_line_orig0>>12)*i_aspect + i_line_center;
const int i_col_orig = (i_col_orig0>>12) + i_col_center;
const uint8_t* p_orig_offset = p_in + i_line_orig * i_pitch
+ i_col_orig;
......@@ -211,17 +237,17 @@ static picture_t *Filter( filter_t *p_filter, picture_t *p_pic )
if( ( i_col_orig < i_visible_pitch - 1)
&& ( i_line_orig >= 0 ) )
i_colpix=*p_orig_offset;
i_colpix = *p_orig_offset;
p_orig_offset+=i_pitch;
if( ( i_line_orig < i_visible_lines - 1)
&& ( i_col_orig < i_visible_pitch - 1) )
i_nexpix=*p_orig_offset;
i_nexpix = *p_orig_offset;
p_orig_offset--;
if( ( i_line_orig < i_visible_lines - 1)
&& ( i_col_orig >= 0 ) )
i_linpix=*p_orig_offset;
i_linpix = *p_orig_offset;
unsigned int temp = 0;
temp+= i_curpix *
......@@ -264,32 +290,24 @@ static picture_t *Filter( filter_t *p_filter, picture_t *p_pic )
}
/*****************************************************************************
*
* Angle modification callbacks.
*****************************************************************************/
static int RotateCallback( vlc_object_t *p_this, char const *psz_var,
vlc_value_t oldval, vlc_value_t newval,
void *p_data )
{
filter_sys_t *p_sys = (filter_sys_t *)p_data;
if( !strcmp( psz_var, "rotate-angle" ) )
{
p_sys->i_angle = newval.i_int*10;
cache_trigo( p_sys->i_angle, &p_sys->i_sin, &p_sys->i_cos );
}
p_sys->i_angle = newval.i_int*10;
cache_trigo( p_sys->i_angle, &p_sys->i_sin, &p_sys->i_cos );
return VLC_SUCCESS;
}
static int PreciseRotateCallback( vlc_object_t *p_this, char const *psz_var,
vlc_value_t oldval, vlc_value_t newval,
void *p_data )
{
filter_sys_t *p_sys = (filter_sys_t *)p_data;
if( !strcmp( psz_var, "rotate-deciangle" ) )
{
p_sys->i_angle = newval.i_int;
cache_trigo( p_sys->i_angle, &p_sys->i_sin, &p_sys->i_cos );
}
p_sys->i_angle = newval.i_int;
cache_trigo( p_sys->i_angle, &p_sys->i_sin, &p_sys->i_cos );
return VLC_SUCCESS;
}
Markdown is supported
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment