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Commit 01deb707 authored by Laurent Aimar's avatar Laurent Aimar
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Simplify a bit scale factor computation by using helpers.

parent 74a2f792
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Showing with 84 additions and 65 deletions
src/video_output/vout_subpictures.c
View file @ 01deb707
......@@ -653,6 +653,40 @@ exit:
p_region->i_align |= SUBPICTURE_RENDERED;
}
/* */
typedef struct
{
int w;
int h;
} spu_scale_t;
static spu_scale_t spu_scale_create( int w, int h )
{
spu_scale_t s = { .w = w, .h = h };
if( s.w <= 0 )
s.w = SCALE_UNIT;
if( s.h <= 0 )
s.h = SCALE_UNIT;
return s;
}
static spu_scale_t spu_scale_unit(void)
{
return spu_scale_create( SCALE_UNIT, SCALE_UNIT );
}
static spu_scale_t spu_scale_createq( int wn, int wd, int hn, int hd )
{
return spu_scale_create( wn * SCALE_UNIT / wd,
hn * SCALE_UNIT / hd );
}
static int spu_scale_w( int v, const spu_scale_t s )
{
return v * s.w / SCALE_UNIT;
}
static int spu_scale_h( int v, const spu_scale_t s )
{
return v * s.h / SCALE_UNIT;
}
/**
* Place a region
*/
......@@ -660,10 +694,10 @@ static void SpuRegionPlace( int *pi_x, int *pi_y,
const video_format_t *p_fmt,
const subpicture_t *p_subpic,
const subpicture_region_t *p_region,
int i_inv_scale_x, int i_inv_scale_y )
const spu_scale_t scale_inv )
{
int i_delta_x = p_region->i_x * i_inv_scale_x / SCALE_UNIT;
int i_delta_y = p_region->i_y * i_inv_scale_y / SCALE_UNIT;
int i_delta_x = spu_scale_w( p_region->i_x, scale_inv );
int i_delta_y = spu_scale_h( p_region->i_y, scale_inv );
int i_x, i_y;
if( p_region->i_align & SUBPICTURE_ALIGN_TOP )
......@@ -705,9 +739,8 @@ static void SpuRegionPlace( int *pi_x, int *pi_y,
static void SpuRenderRegion( spu_t *p_spu,
picture_t *p_pic_dst,
subpicture_t *p_subpic, subpicture_region_t *p_region,
const int i_scale_width_orig, const int i_scale_height_orig,
const int pi_scale_width[SCALE_SIZE],
const int pi_scale_height[SCALE_SIZE],
const spu_scale_t scale_org,
const spu_scale_t p_scale_size[SCALE_SIZE],
const video_format_t *p_fmt )
{
video_format_t fmt_original;
......@@ -716,9 +749,8 @@ static void SpuRenderRegion( spu_t *p_spu,
int i_fade_alpha;
int i_x_offset;
int i_y_offset;
int i_scale_idx;
int i_inv_scale_x;
int i_inv_scale_y;
spu_scale_t scale_inv;
spu_scale_t scale_size;
filter_t *p_scale;
vlc_assert_locked( &p_spu->subpicture_lock );
......@@ -727,7 +759,7 @@ static void SpuRenderRegion( spu_t *p_spu,
b_rerender_text = false;
if( p_region->fmt.i_chroma == VLC_FOURCC('T','E','X','T') )
{
SpuRenderText( p_spu, &b_rerender_text, p_subpic, p_region, __MIN(i_scale_width_orig, i_scale_height_orig) );
SpuRenderText( p_spu, &b_rerender_text, p_subpic, p_region, __MIN( scale_org.w, scale_org.h ) );
b_restore_format = b_rerender_text;
/* Check if the rendering has failed ... */
......@@ -738,15 +770,13 @@ static void SpuRenderRegion( spu_t *p_spu,
if( p_region->i_align & SUBPICTURE_RENDERED )
{
/* We are using a region which come from rendered text */
i_scale_idx = SCALE_TEXT;
i_inv_scale_x = i_scale_width_orig;
i_inv_scale_y = i_scale_height_orig;
scale_inv = scale_org;
scale_size = p_scale_size[SCALE_TEXT];
}
else
{
i_scale_idx = SCALE_DEFAULT;
i_inv_scale_x = SCALE_UNIT;
i_inv_scale_y = SCALE_UNIT;
scale_inv = spu_scale_unit();
scale_size = p_scale_size[SCALE_DEFAULT];
}
/* Force palette if requested
......@@ -773,12 +803,12 @@ static void SpuRenderRegion( spu_t *p_spu,
p_scale = p_spu->p_scale;
if( p_scale &&
( ( pi_scale_width[i_scale_idx] > 0 && pi_scale_width[i_scale_idx] != SCALE_UNIT ) ||
( pi_scale_height[i_scale_idx] > 0 && pi_scale_height[i_scale_idx] != SCALE_UNIT ) ||
( ( scale_size.w > 0 && scale_size.w != SCALE_UNIT ) ||
( scale_size.h > 0 && scale_size.h != SCALE_UNIT ) ||
( b_force_palette ) ) )
{
const unsigned i_dst_width = p_region->fmt.i_width * pi_scale_width[i_scale_idx] / SCALE_UNIT;
const unsigned i_dst_height = p_region->fmt.i_height * pi_scale_height[i_scale_idx] / SCALE_UNIT;
const unsigned i_dst_width = spu_scale_w( p_region->fmt.i_width, scale_size );
const unsigned i_dst_height = spu_scale_h( p_region->fmt.i_height, scale_size );
/* Destroy if cache is unusable */
if( p_region->p_cache )
......@@ -817,13 +847,13 @@ static void SpuRenderRegion( spu_t *p_spu,
p_scale->fmt_out.video.i_height = i_dst_height;
p_scale->fmt_out.video.i_visible_width =
p_region->fmt.i_visible_width * pi_scale_width[ i_scale_idx ] / SCALE_UNIT;
spu_scale_w( p_region->fmt.i_visible_width, scale_size );
p_scale->fmt_out.video.i_visible_height =
p_region->fmt.i_visible_height * pi_scale_height[ i_scale_idx ] / SCALE_UNIT;
spu_scale_h( p_region->fmt.i_visible_height, scale_size );
p_region->p_cache->fmt = p_scale->fmt_out.video;
p_region->p_cache->i_x = p_region->i_x * pi_scale_width[ i_scale_idx ] / SCALE_UNIT;
p_region->p_cache->i_y = p_region->i_y * pi_scale_height[ i_scale_idx ] / SCALE_UNIT;
p_region->p_cache->i_x = spu_scale_w( p_region->i_x, scale_size );
p_region->p_cache->i_y = spu_scale_h( p_region->i_y, scale_size );
p_region->p_cache->i_align = p_region->i_align;
p_region->p_cache->i_alpha = p_region->i_alpha;
......@@ -857,12 +887,12 @@ static void SpuRenderRegion( spu_t *p_spu,
/* */
SpuRegionPlace( &i_x_offset, &i_y_offset,
p_fmt, p_subpic, p_region,
i_inv_scale_x, i_inv_scale_y );
scale_inv );
if( p_spu->i_margin != 0 && !b_force_crop )
{
int i_diff = 0;
int i_low = (i_y_offset - p_spu->i_margin) * i_inv_scale_y / SCALE_UNIT;
int i_low = spu_scale_h( i_y_offset - p_spu->i_margin, scale_inv );
int i_high = i_low + p_region->fmt.i_height;
/* crop extra margin to keep within bounds */
......@@ -870,21 +900,17 @@ static void SpuRenderRegion( spu_t *p_spu,
i_diff = i_low;
if( i_high > (int)p_fmt->i_height )
i_diff = i_high - p_fmt->i_height;
i_y_offset -= ( p_spu->i_margin * i_inv_scale_y / SCALE_UNIT + i_diff );
i_y_offset -= spu_scale_h( p_spu->i_margin, scale_inv ) + i_diff;
}
/* Force cropping if requested */
if( b_force_crop )
{
video_format_t *p_fmt = &p_region->fmt;
int i_crop_x = p_spu->i_crop_x * pi_scale_width[ i_scale_idx ] / SCALE_UNIT
* i_inv_scale_x / SCALE_UNIT;
int i_crop_y = p_spu->i_crop_y * pi_scale_height[ i_scale_idx ] / SCALE_UNIT
* i_inv_scale_y / SCALE_UNIT;
int i_crop_width = p_spu->i_crop_width * pi_scale_width[ i_scale_idx ] / SCALE_UNIT
* i_inv_scale_x / SCALE_UNIT;
int i_crop_height = p_spu->i_crop_height * pi_scale_height[ i_scale_idx ] / SCALE_UNIT
* i_inv_scale_y / SCALE_UNIT;
int i_crop_x = spu_scale_w( spu_scale_w( p_spu->i_crop_x, scale_size ), scale_inv );
int i_crop_y = spu_scale_h( spu_scale_h( p_spu->i_crop_y, scale_size ), scale_inv );
int i_crop_width = spu_scale_w( spu_scale_w( p_spu->i_crop_width, scale_size ), scale_inv );
int i_crop_height= spu_scale_h( spu_scale_h( p_spu->i_crop_height,scale_size ), scale_inv );
/* Find the intersection */
if( i_crop_x + i_crop_width <= i_x_offset ||
......@@ -974,17 +1000,15 @@ void spu_RenderSubpictures( spu_t *p_spu, video_format_t *p_fmt,
int i_source_video_width;
int i_source_video_height;
subpicture_t *p_subpic;
spu_scale_t scale_size_org;
/* Get lock */
vlc_mutex_lock( &p_spu->subpicture_lock );
if( i_scale_width_orig <= 0 )
i_scale_width_orig = SCALE_UNIT;
if( i_scale_height_orig <= 0 )
i_scale_height_orig = SCALE_UNIT;
scale_size_org = spu_scale_create( i_scale_width_orig, i_scale_height_orig );
i_source_video_width = p_fmt->i_width * SCALE_UNIT / i_scale_width_orig;
i_source_video_height = p_fmt->i_height * SCALE_UNIT / i_scale_height_orig;
i_source_video_width = p_fmt->i_width * SCALE_UNIT / scale_size_org.w;
i_source_video_height = p_fmt->i_height * SCALE_UNIT / scale_size_org.h;
/* Check i_status again to make sure spudec hasn't destroyed the subpic */
for( p_subpic = p_subpic_list;
......@@ -995,12 +1019,12 @@ void spu_RenderSubpictures( spu_t *p_spu, video_format_t *p_fmt,
* the video then disregard all further references to the subtitle
* stream.
*/
if( ( i_source_video_height == p_subpic->i_original_picture_height ) &&
( i_source_video_width == p_subpic->i_original_picture_width ) )
if( i_source_video_height == p_subpic->i_original_picture_height &&
i_source_video_width == p_subpic->i_original_picture_width )
{
/* FIXME this looks wrong */
p_subpic->i_original_picture_width = 0;
p_subpic->i_original_picture_height = 0;
p_subpic->i_original_picture_width = 0;
}
/* */
......@@ -1043,8 +1067,7 @@ void spu_RenderSubpictures( spu_t *p_spu, video_format_t *p_fmt,
p_subpic = p_subpic->p_next )
{
subpicture_region_t *p_region;
int pi_scale_width[ SCALE_SIZE ];
int pi_scale_height[ SCALE_SIZE ];
spu_scale_t p_scale_size[SCALE_SIZE];
int k;
if( !p_subpic->p_region )
......@@ -1095,16 +1118,15 @@ void spu_RenderSubpictures( spu_t *p_spu, video_format_t *p_fmt,
/* XXX for text:
* scale[] allows to pass from rendered size (by text module) to video output size */
pi_scale_width[SCALE_TEXT] = p_fmt->i_width * SCALE_UNIT /
p_spu->p_text->fmt_out.video.i_width;
pi_scale_height[SCALE_TEXT]= p_fmt->i_height * SCALE_UNIT /
p_spu->p_text->fmt_out.video.i_height;
p_scale_size[SCALE_TEXT] =
spu_scale_createq( p_fmt->i_width, p_spu->p_text->fmt_out.video.i_width,
p_fmt->i_height, p_spu->p_text->fmt_out.video.i_height );
}
else
{
/* Just set a value to avoid using invalid memory while looping over the array */
pi_scale_width[SCALE_TEXT] =
pi_scale_height[SCALE_TEXT]= SCALE_UNIT;
p_scale_size[SCALE_TEXT] = spu_scale_unit();
}
/* XXX for default:
......@@ -1112,13 +1134,14 @@ void spu_RenderSubpictures( spu_t *p_spu, video_format_t *p_fmt,
if( p_subpic->i_original_picture_height > 0 &&
p_subpic->i_original_picture_width > 0 )
{
pi_scale_width[SCALE_DEFAULT] = p_fmt->i_width * SCALE_UNIT / p_subpic->i_original_picture_width;
pi_scale_height[SCALE_DEFAULT] = p_fmt->i_height * SCALE_UNIT / p_subpic->i_original_picture_height;
p_scale_size[SCALE_DEFAULT] =
spu_scale_createq( p_fmt->i_width, p_subpic->i_original_picture_width,
p_fmt->i_height, p_subpic->i_original_picture_height );
}
else
{
pi_scale_width[ SCALE_DEFAULT ] = i_scale_width_orig;
pi_scale_height[ SCALE_DEFAULT ] = i_scale_height_orig;
p_scale_size[SCALE_DEFAULT] = scale_size_org;
}
for( k = 0; k < SCALE_SIZE ; k++ )
......@@ -1130,10 +1153,8 @@ void spu_RenderSubpictures( spu_t *p_spu, video_format_t *p_fmt,
if( p_subpic->i_original_picture_height > 0 &&
p_subpic->i_original_picture_width <= 0 )
{
pi_scale_height[ k ] = pi_scale_height[ k ] * i_source_video_height /
p_subpic->i_original_picture_height;
pi_scale_width[ k ] = pi_scale_width[ k ] * i_source_video_height /
p_subpic->i_original_picture_height;
p_scale_size[k].h = p_scale_size[k].h * i_source_video_height / p_subpic->i_original_picture_height;
p_scale_size[k].w = p_scale_size[k].w * i_source_video_height / p_subpic->i_original_picture_height;
}
}
......@@ -1162,7 +1183,7 @@ void spu_RenderSubpictures( spu_t *p_spu, video_format_t *p_fmt,
/* FIXME FIXME what about region->i_x/i_y ? */
for( k = 0; k < SCALE_SIZE; k++ )
{
pi_scale_width[k] = pi_scale_width[k] *
p_scale_size[k].w = p_scale_size[k].w *
(int64_t)p_region->fmt.i_sar_num * p_fmt->i_sar_den /
p_region->fmt.i_sar_den / p_fmt->i_sar_num;
}
......@@ -1170,10 +1191,8 @@ void spu_RenderSubpictures( spu_t *p_spu, video_format_t *p_fmt,
/* Render all regions */
for( ; p_region != NULL; p_region = p_region->p_next )
SpuRenderRegion( p_spu, p_pic_dst,
p_subpic, p_region, i_scale_width_orig, i_scale_height_orig,
pi_scale_width, pi_scale_height,
p_fmt );
SpuRenderRegion( p_spu, p_pic_dst, p_subpic, p_region,
scale_size_org, p_scale_size, p_fmt );
}
vlc_mutex_unlock( &p_spu->subpicture_lock );
......
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