#include <stdlib.h>
+/** This macro converts a YUV value to the RGB color space. */
+#define RGB2YUV_601_UNSCALED(r, g, b, y, u, v)\
+ y = (299*r + 587*g + 114*b) >> 10;\
+ u = ((-169*r - 331*g + 500*b) >> 10) + 128;\
+ v = ((500*r - 419*g - 81*b) >> 10) + 128;\
+ y = y < 16 ? 16 : y;\
+ u = u < 16 ? 16 : u;\
+ v = v < 16 ? 16 : v;\
+ y = y > 235 ? 235 : y;\
+ u = u > 240 ? 240 : u;\
+ v = v > 240 ? 240 : v
-static int convert_yuv422_to_rgb24a( uint8_t *yuv, uint8_t *rgba, unsigned int total )
+/** This macro scales YUV up into the full gamut of the RGB color space. */
+#define YUV2RGB_601_SCALED( y, u, v, r, g, b ) \
+ r = ((1192 * ( y - 16 ) + 1634 * ( v - 128 ) ) >> 10 ); \
+ g = ((1192 * ( y - 16 ) - 832 * ( v - 128 ) - 401 * ( u - 128 ) ) >> 10 ); \
+ b = ((1192 * ( y - 16 ) + 2066 * ( u - 128 ) ) >> 10 ); \
+ r = r < 0 ? 0 : r > 255 ? 255 : r; \
+ g = g < 0 ? 0 : g > 255 ? 255 : g; \
+ b = b < 0 ? 0 : b > 255 ? 255 : b;
+
+/** This macro converts a YUV value to the RGB color space. */
+#define YUV2RGB_601_UNSCALED( y, u, v, r, g, b ) \
+ r = ((1024 * y + 1404 * ( v - 128 ) ) >> 10 ); \
+ g = ((1024 * y - 715 * ( v - 128 ) - 345 * ( u - 128 ) ) >> 10 ); \
+ b = ((1024 * y + 1774 * ( u - 128 ) ) >> 10 ); \
+ r = r < 0 ? 0 : r > 255 ? 255 : r; \
+ g = g < 0 ? 0 : g > 255 ? 255 : g; \
+ b = b < 0 ? 0 : b > 255 ? 255 : b;
+
+
+static int convert_yuv422_to_rgb24a( uint8_t *yuv, uint8_t *rgba, uint8_t *alpha, int width, int height )
{
int ret = 0;
int yy, uu, vv;
int r,g,b;
- total /= 2;
- while (total--)
+ int total = width * height / 2 + 1;
+
+ while ( --total )
{
yy = yuv[0];
uu = yuv[1];
vv = yuv[3];
- YUV2RGB(yy, uu, vv, r, g, b);
+ YUV2RGB_601_SCALED (yy, uu, vv, r, g, b);
rgba[0] = r;
rgba[1] = g;
rgba[2] = b;
rgba[3] = 255;
yy = yuv[2];
- YUV2RGB(yy, uu, vv, r, g, b);
+ YUV2RGB_601_SCALED (yy, uu, vv, r, g, b);
rgba[4] = r;
rgba[5] = g;
rgba[6] = b;
return ret;
}
-static int convert_yuv422_to_rgb24( uint8_t *yuv, uint8_t *rgb, unsigned int total )
+static int convert_yuv422_to_rgb24( uint8_t *yuv, uint8_t *rgb, uint8_t *alpha, int width, int height )
{
int ret = 0;
int yy, uu, vv;
int r,g,b;
- total /= 2;
- while (total--)
+ int total = width * height / 2 + 1;
+
+ while ( --total )
{
yy = yuv[0];
uu = yuv[1];
vv = yuv[3];
- YUV2RGB(yy, uu, vv, r, g, b);
+ YUV2RGB_601_SCALED (yy, uu, vv, r, g, b);
rgb[0] = r;
rgb[1] = g;
rgb[2] = b;
yy = yuv[2];
- YUV2RGB(yy, uu, vv, r, g, b);
+ YUV2RGB_601_SCALED (yy, uu, vv, r, g, b);
rgb[3] = r;
rgb[4] = g;
rgb[5] = b;
return ret;
}
-static int convert_rgb24a_to_yuv422( uint8_t *rgba, int width, int height, int stride, uint8_t *yuv, uint8_t *alpha )
+static int convert_rgb24a_to_yuv422( uint8_t *rgba, uint8_t *yuv, uint8_t *alpha, int width, int height )
{
int ret = 0;
- register int y0, y1, u0, u1, v0, v1;
- register int r, g, b;
- register uint8_t *d = yuv;
- register int i, j;
+ int stride = width * 4;
+ int y0, y1, u0, u1, v0, v1;
+ int r, g, b;
+ uint8_t *s, *d = yuv;
+ int i, j, n = width / 2 + 1;
if ( alpha )
for ( i = 0; i < height; i++ )
{
- register uint8_t *s = rgba + ( stride * i );
- for ( j = 0; j < ( width / 2 ); j++ )
+ s = rgba + ( stride * i );
+ j = n;
+ while ( --j )
{
r = *s++;
g = *s++;
b = *s++;
*alpha++ = *s++;
- RGB2YUV (r, g, b, y0, u0 , v0);
+ RGB2YUV_601_SCALED (r, g, b, y0, u0 , v0);
r = *s++;
g = *s++;
b = *s++;
*alpha++ = *s++;
- RGB2YUV (r, g, b, y1, u1 , v1);
+ RGB2YUV_601_SCALED (r, g, b, y1, u1 , v1);
*d++ = y0;
*d++ = (u0+u1) >> 1;
*d++ = y1;
g = *s++;
b = *s++;
*alpha++ = *s++;
- RGB2YUV (r, g, b, y0, u0 , v0);
+ RGB2YUV_601_SCALED (r, g, b, y0, u0 , v0);
*d++ = y0;
*d++ = u0;
}
else
for ( i = 0; i < height; i++ )
{
- register uint8_t *s = rgba + ( stride * i );
- for ( j = 0; j < ( width / 2 ); j++ )
+ s = rgba + ( stride * i );
+ j = n;
+ while ( --j )
{
r = *s++;
g = *s++;
b = *s++;
s++;
- RGB2YUV (r, g, b, y0, u0 , v0);
+ RGB2YUV_601_SCALED (r, g, b, y0, u0 , v0);
r = *s++;
g = *s++;
b = *s++;
s++;
- RGB2YUV (r, g, b, y1, u1 , v1);
+ RGB2YUV_601_SCALED (r, g, b, y1, u1 , v1);
*d++ = y0;
*d++ = (u0+u1) >> 1;
*d++ = y1;
g = *s++;
b = *s++;
s++;
- RGB2YUV (r, g, b, y0, u0 , v0);
+ RGB2YUV_601_SCALED (r, g, b, y0, u0 , v0);
*d++ = y0;
*d++ = u0;
}
return ret;
}
-static int convert_rgb24_to_yuv422( uint8_t *rgb, int width, int height, int stride, uint8_t *yuv )
+static int convert_rgb24_to_yuv422( uint8_t *rgb, uint8_t *yuv, uint8_t *alpha, int width, int height )
{
int ret = 0;
- register int y0, y1, u0, u1, v0, v1;
- register int r, g, b;
- register uint8_t *d = yuv;
- register int i, j;
+ int stride = width * 3;
+ int y0, y1, u0, u1, v0, v1;
+ int r, g, b;
+ uint8_t *s, *d = yuv;
+ int i, j, n = width / 2 + 1;
for ( i = 0; i < height; i++ )
{
- register uint8_t *s = rgb + ( stride * i );
- for ( j = 0; j < ( width / 2 ); j++ )
+ s = rgb + ( stride * i );
+ j = n;
+ while ( --j )
{
r = *s++;
g = *s++;
b = *s++;
- RGB2YUV (r, g, b, y0, u0 , v0);
+ RGB2YUV_601_SCALED (r, g, b, y0, u0 , v0);
r = *s++;
g = *s++;
b = *s++;
- RGB2YUV (r, g, b, y1, u1 , v1);
+ RGB2YUV_601_SCALED (r, g, b, y1, u1 , v1);
*d++ = y0;
*d++ = (u0+u1) >> 1;
*d++ = y1;
r = *s++;
g = *s++;
b = *s++;
- RGB2YUV (r, g, b, y0, u0 , v0);
+ RGB2YUV_601_SCALED (r, g, b, y0, u0 , v0);
*d++ = y0;
*d++ = u0;
}
return ret;
}
-static int convert_yuv420p_to_yuv422( uint8_t *yuv420p, int width, int height, uint8_t *yuv )
+static int convert_yuv420p_to_yuv422( uint8_t *yuv420p, uint8_t *yuv, uint8_t *alpha, int width, int height )
{
int ret = 0;
- register int i, j;
-
+ int i, j;
int half = width >> 1;
-
uint8_t *Y = yuv420p;
uint8_t *U = Y + width * height;
uint8_t *V = U + width * height / 4;
-
- register uint8_t *d = yuv;
+ uint8_t *d = yuv;
for ( i = 0; i < height; i++ )
{
- register uint8_t *u = U + ( i / 2 ) * ( half );
- register uint8_t *v = V + ( i / 2 ) * ( half );
+ uint8_t *u = U + ( i / 2 ) * ( half );
+ uint8_t *v = V + ( i / 2 ) * ( half );
- for ( j = 0; j < half; j++ )
+ j = half + 1;
+ while ( --j )
{
*d ++ = *Y ++;
*d ++ = *u ++;
return ret;
}
-static int convert_rgb24_to_rgb24a( uint8_t *rgb, uint8_t *rgba, int total )
+static int convert_rgb24_to_rgb24a( uint8_t *rgb, uint8_t *rgba, uint8_t *alpha, int width, int height )
{
uint8_t *s = rgb;
uint8_t *d = rgba;
- while ( total-- )
+ int total = width * height + 1;
+
+ while ( --total )
{
*d++ = s[0];
*d++ = s[1];
return 0;
}
-static int convert_rgb24a_to_rgb24( uint8_t *rgba, uint8_t *rgb, int total, uint8_t *alpha )
+static int convert_rgb24a_to_rgb24( uint8_t *rgba, uint8_t *rgb, uint8_t *alpha, int width, int height )
{
uint8_t *s = rgba;
uint8_t *d = rgb;
- while ( total-- )
+ int total = width * height + 1;
+
+ while ( --total )
{
*d++ = s[0];
*d++ = s[1];
return 0;
}
+typedef int ( *conversion_function )( uint8_t *yuv, uint8_t *rgba, uint8_t *alpha, int width, int height );
+
+static conversion_function conversion_matrix[5][5] = {
+ { NULL, convert_rgb24_to_rgb24a, convert_rgb24_to_yuv422, NULL, convert_rgb24_to_rgb24a },
+ { convert_rgb24a_to_rgb24, NULL, convert_rgb24a_to_yuv422, NULL, NULL },
+ { convert_yuv422_to_rgb24, convert_yuv422_to_rgb24a, NULL, NULL, convert_yuv422_to_rgb24a },
+ { NULL, NULL, convert_yuv420p_to_yuv422, NULL, NULL },
+ { convert_rgb24a_to_rgb24, NULL, convert_rgb24a_to_yuv422, NULL, NULL },
+};
+
+static uint8_t bpp_table[4] = { 3, 4, 2, 0 };
+
static int convert_image( mlt_frame frame, uint8_t **buffer, mlt_image_format *format, mlt_image_format requested_format )
{
int error = 0;
if ( *format != requested_format )
{
+ conversion_function converter = conversion_matrix[ *format - 1 ][ requested_format - 1 ];
+
mlt_log_debug( NULL, "[filter imageconvert] %s -> %s\n",
mlt_image_format_name( *format ), mlt_image_format_name( requested_format ) );
- switch ( *format )
+ if ( converter )
{
- case mlt_image_yuv422:
- switch ( requested_format )
- {
- case mlt_image_rgb24:
- {
- uint8_t *rgb = mlt_pool_alloc( width * height * 3 );
- error = convert_yuv422_to_rgb24( *buffer, rgb, width * height );
- if ( error )
- {
- mlt_pool_release( rgb );
- }
- else
- {
- mlt_properties_set_data( properties, "image", rgb, width * height * 3, mlt_pool_release, NULL );
- *buffer = rgb;
- *format = mlt_image_rgb24;
- }
- break;
- }
- case mlt_image_rgb24a:
- case mlt_image_opengl:
- {
- uint8_t *rgba = mlt_pool_alloc( width * height * 4 );
- error = convert_yuv422_to_rgb24a( *buffer, rgba, width * height );
- if ( error )
- {
- mlt_pool_release( rgba );
- }
- else
- {
- mlt_properties_set_data( properties, "image", rgba, width * height * 4, mlt_pool_release, NULL );
- *buffer = rgba;
- *format = requested_format;
- }
- break;
- }
- default:
- error = 1;
- }
- break;
- case mlt_image_rgb24:
- switch ( requested_format )
- {
- case mlt_image_yuv422:
- {
- uint8_t *yuv = mlt_pool_alloc( width * height * 2 );
- error = convert_rgb24_to_yuv422( *buffer, width, height, width * 3, yuv );
- if ( error )
- {
- mlt_pool_release( yuv );
- }
- else
- {
- mlt_properties_set_data( properties, "image", yuv, width * height * 2, mlt_pool_release, NULL );
- *buffer = yuv;
- *format = mlt_image_yuv422;
- }
- break;
- }
- case mlt_image_rgb24a:
- case mlt_image_opengl:
- {
- uint8_t *rgba = mlt_pool_alloc( width * height * 4 );
- error = convert_rgb24_to_rgb24a( *buffer, rgba, width * height );
- if ( error )
- {
- mlt_pool_release( rgba );
- }
- else
- {
- mlt_properties_set_data( properties, "image", rgba, width * height * 4, mlt_pool_release, NULL );
- *buffer = rgba;
- *format = requested_format;
- }
- break;
- }
- default:
- error = 1;
- }
- break;
- case mlt_image_rgb24a:
- case mlt_image_opengl:
- switch ( requested_format )
- {
- case mlt_image_yuv422:
- {
- uint8_t *yuv = mlt_pool_alloc( width * height * 2 );
- uint8_t *alpha = mlt_pool_alloc( width * height );
- error = convert_rgb24a_to_yuv422( *buffer, width, height, width * 4, yuv, alpha );
- if ( error )
- {
- mlt_pool_release( yuv );
- mlt_pool_release( alpha );
- }
- else
- {
- mlt_properties_set_data( properties, "image", yuv, width * height * 2, mlt_pool_release, NULL );
- mlt_properties_set_data( properties, "alpha", alpha, width * height, mlt_pool_release, NULL );
- *buffer = yuv;
- *format = mlt_image_yuv422;
- }
- break;
- }
- case mlt_image_rgb24:
+ int size = width * height * bpp_table[ requested_format - 1 ];
+ uint8_t *image = mlt_pool_alloc( size );
+ uint8_t *alpha = ( *format == mlt_image_rgb24a ||
+ *format == mlt_image_opengl )
+ ? mlt_pool_alloc( width * height ) : NULL;
+
+ if ( !( error = converter( *buffer, image, alpha, width, height ) ) )
{
- uint8_t *rgb = mlt_pool_alloc( width * height * 3 );
- uint8_t *alpha = mlt_pool_alloc( width * height );
- error = convert_rgb24a_to_rgb24( *buffer, rgb, width * height, alpha );
- if ( error )
- {
- mlt_pool_release( rgb );
- mlt_pool_release( alpha );
- }
- else
- {
- mlt_properties_set_data( properties, "image", rgb, width * height * 3, mlt_pool_release, NULL );
+ mlt_properties_set_data( properties, "image", image, size, mlt_pool_release, NULL );
+ if ( alpha )
mlt_properties_set_data( properties, "alpha", alpha, width * height, mlt_pool_release, NULL );
- *buffer = rgb;
- *format = mlt_image_rgb24;
- }
- break;
- }
- case mlt_image_rgb24a:
- case mlt_image_opengl:
+ *buffer = image;
*format = requested_format;
- break;
- default:
- error = 1;
}
- break;
- case mlt_image_yuv420p:
- switch ( requested_format )
- {
- case mlt_image_rgb24:
- case mlt_image_rgb24a:
- case mlt_image_opengl:
- case mlt_image_yuv422:
+ else
{
- uint8_t *yuv = mlt_pool_alloc( width * height * 2 );
- int error = convert_yuv420p_to_yuv422( *buffer, width, height, yuv );
- if ( error )
- {
- mlt_pool_release( yuv );
- }
- else
- {
- mlt_properties_set_data( properties, "image", yuv, width * height * 2, mlt_pool_release, NULL );
- *buffer = yuv;
- *format = mlt_image_yuv422;
- }
- switch ( requested_format )
- {
- case mlt_image_yuv422:
- break;
- case mlt_image_rgb24:
- case mlt_image_rgb24a:
- case mlt_image_opengl:
- error = convert_image( frame, buffer, format, requested_format );
- break;
- default:
- error = 1;
- break;
- }
- break;
- }
- default:
- error = 1;
+ mlt_pool_release( image );
+ if ( alpha )
+ mlt_pool_release( alpha );
}
- break;
- default:
+ }
+ else
+ {
error = 1;
}
}
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