diff options
Diffstat (limited to 'vp8/encoder/dct.c')
| -rw-r--r-- | vp8/encoder/dct.c | 97 |
1 files changed, 96 insertions, 1 deletions
diff --git a/vp8/encoder/dct.c b/vp8/encoder/dct.c index 6f9c68ef7..568d0e087 100644 --- a/vp8/encoder/dct.c +++ b/vp8/encoder/dct.c @@ -11,6 +11,7 @@ #include <math.h> #include "vpx_ports/config.h" +#include "vp8/common/idct.h" #if CONFIG_INT_8X8FDCT @@ -457,4 +458,98 @@ void vp8_short_walsh4x4_c(short *input, short *output, int pitch) ip += 4; op += 4; } -}
\ No newline at end of file +} + +#if CONFIG_LOSSLESS +void vp8_short_walsh4x4_lossless_c(short *input, short *output, int pitch) +{ + int i; + int a1, b1, c1, d1; + short *ip = input; + short *op = output; + int pitch_short = pitch >>1; + + for (i = 0; i < 4; i++) + { + a1 = (ip[0 * pitch_short] + ip[3 * pitch_short])>>Y2_WHT_UPSCALE_FACTOR; + b1 = (ip[1 * pitch_short] + ip[2 * pitch_short])>>Y2_WHT_UPSCALE_FACTOR; + c1 = (ip[1 * pitch_short] - ip[2 * pitch_short])>>Y2_WHT_UPSCALE_FACTOR; + d1 = (ip[0 * pitch_short] - ip[3 * pitch_short])>>Y2_WHT_UPSCALE_FACTOR; + + op[0] = (a1 + b1 + 1)>>1; + op[4] = (c1 + d1)>>1; + op[8] = (a1 - b1)>>1; + op[12]= (d1 - c1)>>1; + + ip++; + op++; + } + ip = output; + op = output; + + for (i = 0; i < 4; i++) + { + a1 = ip[0] + ip[3]; + b1 = ip[1] + ip[2]; + c1 = ip[1] - ip[2]; + d1 = ip[0] - ip[3]; + + op[0] = ((a1 + b1 + 1)>>1)<<Y2_WHT_UPSCALE_FACTOR; + op[1] = ((c1 + d1)>>1)<<Y2_WHT_UPSCALE_FACTOR; + op[2] = ((a1 - b1)>>1)<<Y2_WHT_UPSCALE_FACTOR; + op[3] = ((d1 - c1)>>1)<<Y2_WHT_UPSCALE_FACTOR; + + ip += 4; + op += 4; + } +} + +void vp8_short_walsh4x4_x8_c(short *input, short *output, int pitch) +{ + int i; + int a1, b1, c1, d1; + short *ip = input; + short *op = output; + int pitch_short = pitch >>1; + + for (i = 0; i < 4; i++) + { + a1 = ip[0 * pitch_short] + ip[3 * pitch_short]; + b1 = ip[1 * pitch_short] + ip[2 * pitch_short]; + c1 = ip[1 * pitch_short] - ip[2 * pitch_short]; + d1 = ip[0 * pitch_short] - ip[3 * pitch_short]; + + op[0] = (a1 + b1 +1)>>1; + op[4] = (c1 + d1)>>1; + op[8] = (a1 - b1)>>1; + op[12]= (d1 - c1)>>1; + + ip++; + op++; + } + ip = output; + op = output; + + for (i = 0; i < 4; i++) + { + a1 = ip[0] + ip[3]; + b1 = ip[1] + ip[2]; + c1 = ip[1] - ip[2]; + d1 = ip[0] - ip[3]; + + op[0] = ((a1 + b1 +1)>>1)<<WHT_UPSCALE_FACTOR; + op[1] = ((c1 + d1)>>1)<<WHT_UPSCALE_FACTOR; + op[2] = ((a1 - b1)>>1)<<WHT_UPSCALE_FACTOR; + op[3] = ((d1 - c1)>>1)<<WHT_UPSCALE_FACTOR; + + ip += 4; + op += 4; + } +} + +void vp8_short_walsh8x4_x8_c(short *input, short *output, int pitch) +{ + vp8_short_walsh4x4_x8_c(input, output, pitch); + vp8_short_walsh4x4_x8_c(input + 4, output + 16, pitch); +} +#endif |