/*****************************************************************************
- * video_yuv.c: YUV transformation functions
+ * video_yuv.c: MMX YUV transformation functions
* Provides functions to perform the YUV conversion. The functions provided here
* are a complete and portable C implementation, and may be replaced in certain
* case by optimized functions.
{
size_t tables_size; /* tables size, in bytes */
- /* Computes tables size - 3 Bpp use 32 bits pixel entries in tables */
- switch( p_vout->i_bytes_per_pixel )
+ /* Computes tables size for 8bbp only */
+ if( p_vout->i_bytes_per_pixel == 1 )
{
- case 1:
tables_size = sizeof( u8 )
* (p_vout->b_grayscale ? GRAY_TABLE_SIZE : PALETTE_TABLE_SIZE);
- break;
- case 2:
- tables_size = sizeof( u16 )
- * (p_vout->b_grayscale ? GRAY_TABLE_SIZE : RGB_TABLE_SIZE);
- break;
- case 3:
- case 4:
- default:
- tables_size = sizeof( u32 )
- * (p_vout->b_grayscale ? GRAY_TABLE_SIZE : RGB_TABLE_SIZE);
- break;
- }
- /* Allocate memory */
- p_vout->yuv.p_base = malloc( tables_size );
- if( p_vout->yuv.p_base == NULL )
+ /* Allocate memory */
+ p_vout->yuv.p_base = malloc( tables_size );
+ if( p_vout->yuv.p_base == NULL )
+ {
+ intf_ErrMsg("error: %s\n", strerror(ENOMEM));
+ return( 1 );
+ }
+ }
+ else
{
- intf_ErrMsg("error: %s\n", strerror(ENOMEM));
- return( 1 );
+ p_vout->yuv.p_base = NULL;
}
/* Allocate memory for conversion buffer and offset array */
*****************************************************************************/
void yuv_MMXEnd( vout_thread_t *p_vout )
{
- free( p_vout->yuv.p_base );
+ if( p_vout->i_bytes_per_pixel == 1 )
+ {
+ free( p_vout->yuv.p_base );
+ }
+
free( p_vout->yuv.p_buffer );
free( p_vout->yuv.p_offset );
}
/* following functions are local */
-/*****************************************************************************
- * SetGammaTable: return intensity table transformed by gamma curve.
- *****************************************************************************
- * pi_table is a table of 256 entries from 0 to 255.
- *****************************************************************************/
-void SetGammaTable( int *pi_table, double f_gamma )
-{
- int i_y; /* base intensity */
-
- /* Use exp(gamma) instead of gamma */
- f_gamma = exp( f_gamma );
-
- /* Build gamma table */
- for( i_y = 0; i_y < 256; i_y++ )
- {
- pi_table[ i_y ] = pow( (double)i_y / 256, f_gamma ) * 256;
- }
- }
-
/*****************************************************************************
* SetYUV: compute tables and set function pointers
+ *****************************************************************************/
if( p_vout->b_grayscale )
{
/* Grayscale: build gray table */
- switch( p_vout->i_bytes_per_pixel )
+ if( p_vout->i_bytes_per_pixel == 1 )
{
- case 1:
- {
- u16 bright[256], transp[256];
+ u16 bright[256], transp[256];
- p_vout->yuv.yuv.p_gray8 = (u8 *)p_vout->yuv.p_base + GRAY_MARGIN;
- for( i_index = 0; i_index < GRAY_MARGIN; i_index++ )
- {
- p_vout->yuv.yuv.p_gray8[ -i_index ] = RGB2PIXEL( p_vout, pi_gamma[0], pi_gamma[0], pi_gamma[0] );
- p_vout->yuv.yuv.p_gray8[ 256 + i_index ] = RGB2PIXEL( p_vout, pi_gamma[255], pi_gamma[255], pi_gamma[255] );
- }
- for( i_index = 0; i_index < 256; i_index++)
- {
- p_vout->yuv.yuv.p_gray8[ i_index ] = pi_gamma[ i_index ];
- bright[ i_index ] = i_index << 8;
- transp[ i_index ] = 0;
- }
- /* the colors have been allocated, we can set the palette */
- p_vout->p_set_palette( p_vout, bright, bright, bright, transp );
- p_vout->i_white_pixel = 0xff;
- p_vout->i_black_pixel = 0x00;
- p_vout->i_gray_pixel = 0x44;
- p_vout->i_blue_pixel = 0x3b;
-
- break;
- }
- case 2:
- p_vout->yuv.yuv.p_gray16 = (u16 *)p_vout->yuv.p_base + GRAY_MARGIN;
- for( i_index = 0; i_index < GRAY_MARGIN; i_index++ )
- {
- p_vout->yuv.yuv.p_gray16[ -i_index ] = RGB2PIXEL( p_vout, pi_gamma[0], pi_gamma[0], pi_gamma[0] );
- p_vout->yuv.yuv.p_gray16[ 256 + i_index ] = RGB2PIXEL( p_vout, pi_gamma[255], pi_gamma[255], pi_gamma[255] );
- }
for( i_index = 0; i_index < 256; i_index++)
{
- p_vout->yuv.yuv.p_gray16[ i_index ] = RGB2PIXEL( p_vout, pi_gamma[i_index], pi_gamma[i_index], pi_gamma[i_index] );
+ bright[ i_index ] = i_index << 8;
+ transp[ i_index ] = 0;
}
- break;
- case 3:
- case 4:
- p_vout->yuv.yuv.p_gray32 = (u32 *)p_vout->yuv.p_base + GRAY_MARGIN;
- for( i_index = 0; i_index < GRAY_MARGIN; i_index++ )
- {
- p_vout->yuv.yuv.p_gray32[ -i_index ] = RGB2PIXEL( p_vout, pi_gamma[0], pi_gamma[0], pi_gamma[0] );
- p_vout->yuv.yuv.p_gray32[ 256 + i_index ] = RGB2PIXEL( p_vout, pi_gamma[255], pi_gamma[255], pi_gamma[255] );
- }
- for( i_index = 0; i_index < 256; i_index++)
- {
- p_vout->yuv.yuv.p_gray32[ i_index ] = RGB2PIXEL( p_vout, pi_gamma[i_index], pi_gamma[i_index], pi_gamma[i_index] );
- }
- break;
- }
+ /* the colors have been allocated, we can set the palette */
+ p_vout->p_set_palette( p_vout, bright, bright, bright, transp );
+ p_vout->i_white_pixel = 0xff;
+ p_vout->i_black_pixel = 0x00;
+ p_vout->i_gray_pixel = 0x44;
+ p_vout->i_blue_pixel = 0x3b;
+ }
}
else
{
/* Color: build red, green and blue tables */
- switch( p_vout->i_bytes_per_pixel )
+ if( p_vout->i_bytes_per_pixel == 1 )
{
- case 1:
+ #define RGB_MIN 0
+ #define RGB_MAX 255
+ #define CLIP( x ) ( ((x < 0) ? 0 : (x > 255) ? 255 : x) << 8 )
+ #define SHIFT 20
+ #define U_GREEN_COEF ((int)(-0.391 * (1<<SHIFT) / 1.164))
+ #define U_BLUE_COEF ((int)(2.018 * (1<<SHIFT) / 1.164))
+ #define V_RED_COEF ((int)(1.596 * (1<<SHIFT) / 1.164))
+ #define V_GREEN_COEF ((int)(-0.813 * (1<<SHIFT) / 1.164))
+
+ int y,u,v;
+ int r,g,b;
+ int uvr, uvg, uvb;
+ int i = 0, j = 0;
+ u16 red[256], green[256], blue[256], transp[256];
+ unsigned char lookup[PALETTE_TABLE_SIZE];
+
+ p_vout->yuv.yuv.p_rgb8 = (u8 *)p_vout->yuv.p_base;
+
+ /* this loop calculates the intersection of an YUV box
+ * and the RGB cube. */
+ for ( y = 0; y <= 256; y += 16 )
{
- #define RGB_MIN 0
- #define RGB_MAX 255
- #define CLIP( x ) ( ((x < 0) ? 0 : (x > 255) ? 255 : x) << 8 )
-
- int y,u,v;
- int r,g,b;
- int uvr, uvg, uvb;
- int i = 0, j = 0;
- u16 red[256], green[256], blue[256], transp[256];
- unsigned char lookup[PALETTE_TABLE_SIZE];
-
- p_vout->yuv.yuv.p_rgb8 = (u8 *)p_vout->yuv.p_base;
-
- /* this loop calculates the intersection of an YUV box
- * and the RGB cube. */
- for ( y = 0; y <= 256; y += 16 )
+ for ( u = 0; u <= 256; u += 32 )
+ for ( v = 0; v <= 256; v += 32 )
{
- for ( u = 0; u <= 256; u += 32 )
- for ( v = 0; v <= 256; v += 32 )
+ uvr = (V_RED_COEF*(v-128)) >> SHIFT;
+ uvg = (U_GREEN_COEF*(u-128) + V_GREEN_COEF*(v-128)) >> SHIFT;
+ uvb = (U_BLUE_COEF*(u-128)) >> SHIFT;
+ r = y + uvr;
+ g = y + uvg;
+ b = y + uvb;
+
+ if( r >= RGB_MIN && g >= RGB_MIN && b >= RGB_MIN
+ && r <= RGB_MAX && g <= RGB_MAX && b <= RGB_MAX )
{
- uvr = (V_RED_COEF*(v-128)) >> SHIFT;
- uvg = (U_GREEN_COEF*(u-128) + V_GREEN_COEF*(v-128)) >> SHIFT;
- uvb = (U_BLUE_COEF*(u-128)) >> SHIFT;
- r = y + uvr;
- g = y + uvg;
- b = y + uvb;
-
- if( r >= RGB_MIN && g >= RGB_MIN && b >= RGB_MIN
- && r <= RGB_MAX && g <= RGB_MAX && b <= RGB_MAX )
- {
- /* this one should never happen unless someone fscked up my code */
- if(j == 256) { intf_ErrMsg( "vout error: no colors left to build palette\n" ); break; }
-
- /* clip the colors */
- red[j] = CLIP( r );
- green[j] = CLIP( g );
- blue[j] = CLIP( b );
- transp[j] = 0;
-
- /* allocate color */
- lookup[i] = 1;
- p_vout->yuv.yuv.p_rgb8[i++] = j;
- j++;
- }
- else
- {
- lookup[i] = 0;
- p_vout->yuv.yuv.p_rgb8[i++] = 0;
- }
+ /* this one should never happen unless someone fscked up my code */
+ if(j == 256) { intf_ErrMsg( "vout error: no colors left to build palette\n" ); break; }
+
+ /* clip the colors */
+ red[j] = CLIP( r );
+ green[j] = CLIP( g );
+ blue[j] = CLIP( b );
+ transp[j] = 0;
+
+ /* allocate color */
+ lookup[i] = 1;
+ p_vout->yuv.yuv.p_rgb8[i++] = j;
+ j++;
+ }
+ else
+ {
+ lookup[i] = 0;
+ p_vout->yuv.yuv.p_rgb8[i++] = 0;
}
- i += 128-81;
}
+ i += 128-81;
+ }
- /* the colors have been allocated, we can set the palette */
- /* there will eventually be a way to know which colors
- * couldn't be allocated and try to find a replacement */
- p_vout->p_set_palette( p_vout, red, green, blue, transp );
+ /* the colors have been allocated, we can set the palette */
+ /* there will eventually be a way to know which colors
+ * couldn't be allocated and try to find a replacement */
+ p_vout->p_set_palette( p_vout, red, green, blue, transp );
- p_vout->i_white_pixel = 0xff;
- p_vout->i_black_pixel = 0x00;
- p_vout->i_gray_pixel = 0x44;
- p_vout->i_blue_pixel = 0x3b;
+ p_vout->i_white_pixel = 0xff;
+ p_vout->i_black_pixel = 0x00;
+ p_vout->i_gray_pixel = 0x44;
+ p_vout->i_blue_pixel = 0x3b;
- i = 0;
- /* this loop allocates colors that got outside
- * the RGB cube */
- for ( y = 0; y <= 256; y += 16 )
+ i = 0;
+ /* this loop allocates colors that got outside
+ * the RGB cube */
+ for ( y = 0; y <= 256; y += 16 )
+ {
+ for ( u = 0; u <= 256; u += 32 )
{
- for ( u = 0; u <= 256; u += 32 )
for ( v = 0; v <= 256; v += 32 )
{
int u2, v2;
}
i++;
}
- i += 128-81;
}
-
- break;
- }
- case 2:
- p_vout->yuv.yuv.p_rgb16 = (u16 *)p_vout->yuv.p_base;
- for( i_index = 0; i_index < RED_MARGIN; i_index++ )
- {
- p_vout->yuv.yuv.p_rgb16[RED_OFFSET - RED_MARGIN + i_index] = RGB2PIXEL( p_vout, pi_gamma[0], 0, 0 );
- p_vout->yuv.yuv.p_rgb16[RED_OFFSET + 256 + i_index] = RGB2PIXEL( p_vout, pi_gamma[255], 0, 0 );
+ i += 128-81;
}
- for( i_index = 0; i_index < GREEN_MARGIN; i_index++ )
- {
- p_vout->yuv.yuv.p_rgb16[GREEN_OFFSET - GREEN_MARGIN + i_index] = RGB2PIXEL( p_vout, 0, pi_gamma[0], 0 );
- p_vout->yuv.yuv.p_rgb16[GREEN_OFFSET + 256 + i_index] = RGB2PIXEL( p_vout, 0, pi_gamma[255], 0 );
- }
- for( i_index = 0; i_index < BLUE_MARGIN; i_index++ )
- {
- p_vout->yuv.yuv.p_rgb16[BLUE_OFFSET - BLUE_MARGIN + i_index] = RGB2PIXEL( p_vout, 0, 0, pi_gamma[0] );
- p_vout->yuv.yuv.p_rgb16[BLUE_OFFSET + BLUE_MARGIN + i_index] = RGB2PIXEL( p_vout, 0, 0, pi_gamma[255] );
- }
- for( i_index = 0; i_index < 256; i_index++ )
- {
- p_vout->yuv.yuv.p_rgb16[RED_OFFSET + i_index] = RGB2PIXEL( p_vout, pi_gamma[ i_index ], 0, 0 );
- p_vout->yuv.yuv.p_rgb16[GREEN_OFFSET + i_index] = RGB2PIXEL( p_vout, 0, pi_gamma[ i_index ], 0 );
- p_vout->yuv.yuv.p_rgb16[BLUE_OFFSET + i_index] = RGB2PIXEL( p_vout, 0, 0, pi_gamma[ i_index ] );
- }
- break;
- case 3:
- case 4:
- p_vout->yuv.yuv.p_rgb32 = (u32 *)p_vout->yuv.p_base;
- for( i_index = 0; i_index < RED_MARGIN; i_index++ )
- {
- p_vout->yuv.yuv.p_rgb32[RED_OFFSET - RED_MARGIN + i_index] = RGB2PIXEL( p_vout, pi_gamma[0], 0, 0 );
- p_vout->yuv.yuv.p_rgb32[RED_OFFSET + 256 + i_index] = RGB2PIXEL( p_vout, pi_gamma[255], 0, 0 );
- }
- for( i_index = 0; i_index < GREEN_MARGIN; i_index++ )
- {
- p_vout->yuv.yuv.p_rgb32[GREEN_OFFSET - GREEN_MARGIN + i_index] = RGB2PIXEL( p_vout, 0, pi_gamma[0], 0 );
- p_vout->yuv.yuv.p_rgb32[GREEN_OFFSET + 256 + i_index] = RGB2PIXEL( p_vout, 0, pi_gamma[255], 0 );
- }
- for( i_index = 0; i_index < BLUE_MARGIN; i_index++ )
- {
- p_vout->yuv.yuv.p_rgb32[BLUE_OFFSET - BLUE_MARGIN + i_index] = RGB2PIXEL( p_vout, 0, 0, pi_gamma[0] );
- p_vout->yuv.yuv.p_rgb32[BLUE_OFFSET + BLUE_MARGIN + i_index] = RGB2PIXEL( p_vout, 0, 0, pi_gamma[255] );
- }
- for( i_index = 0; i_index < 256; i_index++ )
- {
- p_vout->yuv.yuv.p_rgb32[RED_OFFSET + i_index] = RGB2PIXEL( p_vout, pi_gamma[ i_index ], 0, 0 );
- p_vout->yuv.yuv.p_rgb32[GREEN_OFFSET + i_index] = RGB2PIXEL( p_vout, 0, pi_gamma[ i_index ], 0 );
- p_vout->yuv.yuv.p_rgb32[BLUE_OFFSET + i_index] = RGB2PIXEL( p_vout, 0, 0, pi_gamma[ i_index ] );
- }
- break;
}
}
projects / vlc / blobdiff