diff -r 000000000000 -r 0e761a78d257 gst_plugins_base/gst/videoscale/vs_scanline.c --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/gst_plugins_base/gst/videoscale/vs_scanline.c Thu Dec 17 08:53:32 2009 +0200 @@ -0,0 +1,697 @@ +/* + * Image Scaling Functions + * Copyright (c) 2005 David A. Schleef + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, + * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#include "vs_scanline.h" +#include + +/* greyscale, i.e., single componenet */ +#ifdef __SYMBIAN32__ +EXPORT_C +#endif + + +void +vs_scanline_downsample_Y (uint8_t * dest, uint8_t * src, int n) +{ + int i; + + for (i = 0; i < n; i++) { + dest[i] = (src[i * 2] + src[i * 2 + 1]) / 2; + } +} +#ifdef __SYMBIAN32__ +EXPORT_C +#endif + + +void +vs_scanline_resample_nearest_Y (uint8_t * dest, uint8_t * src, int n, + int *accumulator, int increment) +{ + int acc = *accumulator; + int i; + int j; + int x; + + for (i = 0; i < n; i++) { + j = acc >> 16; + x = acc & 0xffff; + dest[i] = (x < 32768) ? src[j] : src[j + 1]; + + acc += increment; + } + + *accumulator = acc; +} +#ifdef __SYMBIAN32__ +EXPORT_C +#endif + + +void +vs_scanline_resample_linear_Y (uint8_t * dest, uint8_t * src, int n, + int *accumulator, int increment) +{ + uint32_t vals[2]; + + vals[0] = *accumulator; + vals[1] = increment; + + oil_resample_linear_u8 (dest, src, n, vals); + + *accumulator = vals[0]; +} +#ifdef __SYMBIAN32__ +EXPORT_C +#endif + + +void +vs_scanline_merge_linear_Y (uint8_t * dest, uint8_t * src1, uint8_t * src2, + int n, int x) +{ + uint32_t value = x >> 8; + + oil_merge_linear_u8 (dest, src1, src2, &value, n); +} + + +/* RGBA */ +#ifdef __SYMBIAN32__ +EXPORT_C +#endif + + +void +vs_scanline_downsample_RGBA (uint8_t * dest, uint8_t * src, int n) +{ + int i; + + for (i = 0; i < n; i++) { + dest[i * 4 + 0] = (src[i * 8 + 0] + src[i * 8 + 4]) / 2; + dest[i * 4 + 1] = (src[i * 8 + 1] + src[i * 8 + 5]) / 2; + dest[i * 4 + 2] = (src[i * 8 + 2] + src[i * 8 + 6]) / 2; + dest[i * 4 + 3] = (src[i * 8 + 3] + src[i * 8 + 7]) / 2; + } +} +#ifdef __SYMBIAN32__ +EXPORT_C +#endif + + +void +vs_scanline_resample_nearest_RGBA (uint8_t * dest, uint8_t * src, int n, + int *accumulator, int increment) +{ + int acc = *accumulator; + int i; + int j; + int x; + + for (i = 0; i < n; i++) { + j = acc >> 16; + x = acc & 0xffff; + dest[i * 4 + 0] = (x < 32768) ? src[j * 4 + 0] : src[j * 4 + 4]; + dest[i * 4 + 1] = (x < 32768) ? src[j * 4 + 1] : src[j * 4 + 5]; + dest[i * 4 + 2] = (x < 32768) ? src[j * 4 + 2] : src[j * 4 + 6]; + dest[i * 4 + 3] = (x < 32768) ? src[j * 4 + 3] : src[j * 4 + 7]; + + acc += increment; + } + + *accumulator = acc; +} +#ifdef __SYMBIAN32__ +EXPORT_C +#endif + + +void +vs_scanline_resample_linear_RGBA (uint8_t * dest, uint8_t * src, int n, + int *accumulator, int increment) +{ + uint32_t vals[2]; + + vals[0] = *accumulator; + vals[1] = increment; + + oil_resample_linear_argb ((uint32_t *) dest, (uint32_t *) src, n, vals); + + *accumulator = vals[0]; +} +#ifdef __SYMBIAN32__ +EXPORT_C +#endif + + +void +vs_scanline_merge_linear_RGBA (uint8_t * dest, uint8_t * src1, uint8_t * src2, + int n, int x) +{ + uint32_t value = x >> 8; + + oil_merge_linear_argb ((uint32_t *) dest, (uint32_t *) src1, + (uint32_t *) src2, &value, n); +} + + +/* RGB */ +#ifdef __SYMBIAN32__ +EXPORT_C +#endif + + +void +vs_scanline_downsample_RGB (uint8_t * dest, uint8_t * src, int n) +{ + int i; + + for (i = 0; i < n; i++) { + dest[i * 3 + 0] = (src[i * 6 + 0] + src[i * 6 + 3]) / 2; + dest[i * 3 + 1] = (src[i * 6 + 1] + src[i * 6 + 4]) / 2; + dest[i * 3 + 2] = (src[i * 6 + 2] + src[i * 6 + 5]) / 2; + } +} +#ifdef __SYMBIAN32__ +EXPORT_C +#endif + + +void +vs_scanline_resample_nearest_RGB (uint8_t * dest, uint8_t * src, int n, + int *accumulator, int increment) +{ + int acc = *accumulator; + int i; + int j; + int x; + + for (i = 0; i < n; i++) { + j = acc >> 16; + x = acc & 0xffff; + dest[i * 3 + 0] = (x < 32768) ? src[j * 3 + 0] : src[j * 3 + 3]; + dest[i * 3 + 1] = (x < 32768) ? src[j * 3 + 1] : src[j * 3 + 4]; + dest[i * 3 + 2] = (x < 32768) ? src[j * 3 + 2] : src[j * 3 + 5]; + + acc += increment; + } + + *accumulator = acc; +} +#ifdef __SYMBIAN32__ +EXPORT_C +#endif + + +void +vs_scanline_resample_linear_RGB (uint8_t * dest, uint8_t * src, int n, + int *accumulator, int increment) +{ + int acc = *accumulator; + int i; + int j; + int x; + + for (i = 0; i < n; i++) { + j = acc >> 16; + x = acc & 0xffff; + dest[i * 3 + 0] = (src[j * 3 + 0] * (65536 - x) + src[j * 3 + 3] * x) >> 16; + dest[i * 3 + 1] = (src[j * 3 + 1] * (65536 - x) + src[j * 3 + 4] * x) >> 16; + dest[i * 3 + 2] = (src[j * 3 + 2] * (65536 - x) + src[j * 3 + 5] * x) >> 16; + + acc += increment; + } + + *accumulator = acc; +} +#ifdef __SYMBIAN32__ +EXPORT_C +#endif + + +void +vs_scanline_merge_linear_RGB (uint8_t * dest, uint8_t * src1, uint8_t * src2, + int n, int x) +{ + uint32_t value = x >> 8; + + oil_merge_linear_u8 (dest, src1, src2, &value, n * 3); +} + + +/* YUYV */ + +/* n is the number of bi-pixels */ +/* increment is per Y pixel */ +#ifdef __SYMBIAN32__ +EXPORT_C +#endif + + +void +vs_scanline_downsample_YUYV (uint8_t * dest, uint8_t * src, int n) +{ + int i; + + for (i = 0; i < n; i++) { + dest[i * 4 + 0] = (src[i * 8 + 0] + src[i * 8 + 2]) / 2; + dest[i * 4 + 1] = (src[i * 8 + 1] + src[i * 8 + 5]) / 2; + dest[i * 4 + 2] = (src[i * 8 + 4] + src[i * 8 + 6]) / 2; + dest[i * 4 + 3] = (src[i * 8 + 3] + src[i * 8 + 7]) / 2; + } +} +#ifdef __SYMBIAN32__ +EXPORT_C +#endif + + +void +vs_scanline_resample_nearest_YUYV (uint8_t * dest, uint8_t * src, int n, + int *accumulator, int increment) +{ + int acc = *accumulator; + int i; + int j; + int x; + + for (i = 0; i < n; i++) { + j = acc >> 16; + x = acc & 0xffff; + dest[i * 4 + 0] = (x < 32768) ? src[j * 2 + 0] : src[j * 2 + 2]; + + j = acc >> 17; + x = acc & 0x1ffff; + dest[i * 4 + 1] = (x < 65536) ? src[j * 4 + 1] : src[j * 4 + 5]; + dest[i * 4 + 3] = (x < 65536) ? src[j * 4 + 3] : src[j * 4 + 7]; + + acc += increment; + + j = acc >> 16; + x = acc & 0xffff; + dest[i * 4 + 2] = (x < 32768) ? src[j * 2 + 0] : src[j * 2 + 2]; + acc += increment; + } + + *accumulator = acc; +} +#ifdef __SYMBIAN32__ +EXPORT_C +#endif + + +void +vs_scanline_resample_linear_YUYV (uint8_t * dest, uint8_t * src, int n, + int *accumulator, int increment) +{ + int acc = *accumulator; + int i; + int j; + int x; + + for (i = 0; i < n; i++) { + j = acc >> 16; + x = acc & 0xffff; + dest[i * 4 + 0] = (src[j * 2 + 0] * (65536 - x) + src[j * 2 + 2] * x) >> 16; + + j = acc >> 17; + x = acc & 0x1ffff; + dest[i * 4 + 1] = + (src[j * 4 + 1] * (131072 - x) + src[j * 4 + 5] * x) >> 17; + dest[i * 4 + 3] = + (src[j * 4 + 3] * (131072 - x) + src[j * 4 + 7] * x) >> 17; + + acc += increment; + + j = acc >> 16; + x = acc & 0xffff; + dest[i * 4 + 2] = (src[j * 2 + 0] * (65536 - x) + src[j * 2 + 2] * x) >> 16; + acc += increment; + } + + *accumulator = acc; +} +#ifdef __SYMBIAN32__ +EXPORT_C +#endif + + +void +vs_scanline_merge_linear_YUYV (uint8_t * dest, uint8_t * src1, uint8_t * src2, + int n, int x) +{ + int i; + + for (i = 0; i < n; i++) { + dest[i * 4 + 0] = + (src1[i * 4 + 0] * (65536 - x) + src2[i * 4 + 0] * x) >> 16; + dest[i * 4 + 1] = + (src1[i * 4 + 1] * (65536 - x) + src2[i * 4 + 1] * x) >> 16; + dest[i * 4 + 2] = + (src1[i * 4 + 2] * (65536 - x) + src2[i * 4 + 2] * x) >> 16; + dest[i * 4 + 3] = + (src1[i * 4 + 3] * (65536 - x) + src2[i * 4 + 3] * x) >> 16; + } +} + + +/* UYVY */ + +/* n is the number of bi-pixels */ +/* increment is per Y pixel */ +#ifdef __SYMBIAN32__ +EXPORT_C +#endif + + +void +vs_scanline_downsample_UYVY (uint8_t * dest, uint8_t * src, int n) +{ + int i; + + for (i = 0; i < n; i++) { + dest[i * 4 + 0] = (src[i * 8 + 0] + src[i * 8 + 4]) / 2; + dest[i * 4 + 1] = (src[i * 8 + 1] + src[i * 8 + 3]) / 2; + dest[i * 4 + 2] = (src[i * 8 + 2] + src[i * 8 + 6]) / 2; + dest[i * 4 + 3] = (src[i * 8 + 5] + src[i * 8 + 7]) / 2; + } +} +#ifdef __SYMBIAN32__ +EXPORT_C +#endif + + +void +vs_scanline_resample_nearest_UYVY (uint8_t * dest, uint8_t * src, int n, + int *accumulator, int increment) +{ + int acc = *accumulator; + int i; + int j; + int x; + + for (i = 0; i < n; i++) { + j = acc >> 16; + x = acc & 0xffff; + dest[i * 4 + 1] = (x < 32768) ? src[j * 2 + 1] : src[j * 2 + 3]; + + j = acc >> 17; + x = acc & 0x1ffff; + dest[i * 4 + 0] = (x < 65536) ? src[j * 4 + 0] : src[j * 4 + 4]; + dest[i * 4 + 2] = (x < 65536) ? src[j * 4 + 2] : src[j * 4 + 6]; + + acc += increment; + + j = acc >> 16; + x = acc & 0xffff; + dest[i * 4 + 3] = (x < 32768) ? src[j * 2 + 1] : src[j * 2 + 3]; + acc += increment; + } + + *accumulator = acc; +} +#ifdef __SYMBIAN32__ +EXPORT_C +#endif + + +void +vs_scanline_resample_linear_UYVY (uint8_t * dest, uint8_t * src, int n, + int *accumulator, int increment) +{ + int acc = *accumulator; + int i; + int j; + int x; + + for (i = 0; i < n; i++) { + j = acc >> 16; + x = acc & 0xffff; + dest[i * 4 + 1] = (src[j * 2 + 1] * (65536 - x) + src[j * 2 + 3] * x) >> 16; + + j = acc >> 17; + x = acc & 0x1ffff; + dest[i * 4 + 0] = + (src[j * 4 + 0] * (131072 - x) + src[j * 4 + 4] * x) >> 17; + dest[i * 4 + 2] = + (src[j * 4 + 2] * (131072 - x) + src[j * 4 + 6] * x) >> 17; + + acc += increment; + + j = acc >> 16; + x = acc & 0xffff; + dest[i * 4 + 3] = (src[j * 2 + 1] * (65536 - x) + src[j * 2 + 3] * x) >> 16; + acc += increment; + } + + *accumulator = acc; +} +#ifdef __SYMBIAN32__ +EXPORT_C +#endif + + +void +vs_scanline_merge_linear_UYVY (uint8_t * dest, uint8_t * src1, uint8_t * src2, + int n, int x) +{ + uint32_t value = x >> 8; + + oil_merge_linear_argb ((uint32_t *) dest, (uint32_t *) src1, + (uint32_t *) src2, &value, n); +} + + +/* RGB565 */ + +/* note that src and dest are uint16_t, and thus endian dependent */ + +#define RGB565_R(x) (((x)&0xf800)>>8 | ((x)&0xf800)>>13) +#define RGB565_G(x) (((x)&0x07e0)>>3 | ((x)&0x07e0)>>9) +#define RGB565_B(x) (((x)&0x001f)<<3 | ((x)&0x001f)>>2) + +#define RGB565(r,g,b) \ + ((((r)<<8)&0xf800) | (((g)<<3)&0x07e0) | (((b)>>3)&0x001f)) + +#ifdef __SYMBIAN32__ +EXPORT_C +#endif +void +vs_scanline_downsample_RGB565 (uint8_t * dest_u8, uint8_t * src_u8, int n) +{ + uint16_t *dest = (uint16_t *) dest_u8; + uint16_t *src = (uint16_t *) src_u8; + int i; + + for (i = 0; i < n; i++) { + dest[i] = RGB565 ( + (RGB565_R (src[i * 2]) + RGB565_R (src[i * 2 + 1])) / 2, + (RGB565_G (src[i * 2]) + RGB565_G (src[i * 2 + 1])) / 2, + (RGB565_B (src[i * 2]) + RGB565_B (src[i * 2 + 1])) / 2); + } +} +#ifdef __SYMBIAN32__ +EXPORT_C +#endif + + +void +vs_scanline_resample_nearest_RGB565 (uint8_t * dest_u8, uint8_t * src_u8, int n, + int *accumulator, int increment) +{ + uint16_t *dest = (uint16_t *) dest_u8; + uint16_t *src = (uint16_t *) src_u8; + int acc = *accumulator; + int i; + int j; + int x; + + for (i = 0; i < n; i++) { + j = acc >> 16; + x = acc & 0xffff; + dest[i] = (x < 32768) ? src[j] : src[j + 1]; + + acc += increment; + } + + *accumulator = acc; +} +#ifdef __SYMBIAN32__ +EXPORT_C +#endif + + +void +vs_scanline_resample_linear_RGB565 (uint8_t * dest_u8, uint8_t * src_u8, int n, + int *accumulator, int increment) +{ + uint16_t *dest = (uint16_t *) dest_u8; + uint16_t *src = (uint16_t *) src_u8; + int acc = *accumulator; + int i; + int j; + int x; + + for (i = 0; i < n; i++) { + j = acc >> 16; + x = acc & 0xffff; + dest[i] = RGB565 ( + (RGB565_R (src[j]) * (65536 - x) + RGB565_R (src[j + 1]) * x) >> 16, + (RGB565_G (src[j]) * (65536 - x) + RGB565_G (src[j + 1]) * x) >> 16, + (RGB565_B (src[j]) * (65536 - x) + RGB565_B (src[j + 1]) * x) >> 16); + + acc += increment; + } + + *accumulator = acc; +} +#ifdef __SYMBIAN32__ +EXPORT_C +#endif + + +void +vs_scanline_merge_linear_RGB565 (uint8_t * dest_u8, uint8_t * src1_u8, + uint8_t * src2_u8, int n, int x) +{ + uint16_t *dest = (uint16_t *) dest_u8; + uint16_t *src1 = (uint16_t *) src1_u8; + uint16_t *src2 = (uint16_t *) src2_u8; + int i; + + for (i = 0; i < n; i++) { + dest[i] = RGB565 ( + (RGB565_R (src1[i]) * (65536 - x) + RGB565_R (src2[i]) * x) >> 16, + (RGB565_G (src1[i]) * (65536 - x) + RGB565_G (src2[i]) * x) >> 16, + (RGB565_B (src1[i]) * (65536 - x) + RGB565_B (src2[i]) * x) >> 16); + } +} + + +/* RGB555 */ + +/* note that src and dest are uint16_t, and thus endian dependent */ + +#define RGB555_R(x) (((x)&0x7c00)>>8 | ((x)&0x7c00)>>13) +#define RGB555_G(x) (((x)&0x03e0)>>3 | ((x)&0x03e0)>>9) +#define RGB555_B(x) (((x)&0x001f)<<3 | ((x)&0x001f)>>2) + +#define RGB555(r,g,b) \ + ((((r)<<7)&0x7c00) | (((g)<<3)&0x03e0) | (((b)>>3)&0x001f)) + +#ifdef __SYMBIAN32__ +EXPORT_C +#endif +void +vs_scanline_downsample_RGB555 (uint8_t * dest_u8, uint8_t * src_u8, int n) +{ + uint16_t *dest = (uint16_t *) dest_u8; + uint16_t *src = (uint16_t *) src_u8; + int i; + + for (i = 0; i < n; i++) { + dest[i] = RGB555 ( + (RGB555_R (src[i * 2]) + RGB555_R (src[i * 2 + 1])) / 2, + (RGB555_G (src[i * 2]) + RGB555_G (src[i * 2 + 1])) / 2, + (RGB555_B (src[i * 2]) + RGB555_B (src[i * 2 + 1])) / 2); + } +} +#ifdef __SYMBIAN32__ +EXPORT_C +#endif + + +void +vs_scanline_resample_nearest_RGB555 (uint8_t * dest_u8, uint8_t * src_u8, int n, + int *accumulator, int increment) +{ + uint16_t *dest = (uint16_t *) dest_u8; + uint16_t *src = (uint16_t *) src_u8; + int acc = *accumulator; + int i; + int j; + int x; + + for (i = 0; i < n; i++) { + j = acc >> 16; + x = acc & 0xffff; + dest[i] = (x < 32768) ? src[j] : src[j + 1]; + + acc += increment; + } + + *accumulator = acc; +} +#ifdef __SYMBIAN32__ +EXPORT_C +#endif + + +void +vs_scanline_resample_linear_RGB555 (uint8_t * dest_u8, uint8_t * src_u8, int n, + int *accumulator, int increment) +{ + uint16_t *dest = (uint16_t *) dest_u8; + uint16_t *src = (uint16_t *) src_u8; + int acc = *accumulator; + int i; + int j; + int x; + + for (i = 0; i < n; i++) { + j = acc >> 16; + x = acc & 0xffff; + dest[i] = RGB555 ( + (RGB555_R (src[j]) * (65536 - x) + RGB555_R (src[j + 1]) * x) >> 16, + (RGB555_G (src[j]) * (65536 - x) + RGB555_G (src[j + 1]) * x) >> 16, + (RGB555_B (src[j]) * (65536 - x) + RGB555_B (src[j + 1]) * x) >> 16); + + acc += increment; + } + + *accumulator = acc; +} +#ifdef __SYMBIAN32__ +EXPORT_C +#endif + + +void +vs_scanline_merge_linear_RGB555 (uint8_t * dest_u8, uint8_t * src1_u8, + uint8_t * src2_u8, int n, int x) +{ + uint16_t *dest = (uint16_t *) dest_u8; + uint16_t *src1 = (uint16_t *) src1_u8; + uint16_t *src2 = (uint16_t *) src2_u8; + int i; + + for (i = 0; i < n; i++) { + dest[i] = RGB555 ( + (RGB555_R (src1[i]) * (65536 - x) + RGB555_R (src2[i]) * x) >> 16, + (RGB555_G (src1[i]) * (65536 - x) + RGB555_G (src2[i]) * x) >> 16, + (RGB555_B (src1[i]) * (65536 - x) + RGB555_B (src2[i]) * x) >> 16); + } +}