diff options
author | Ronald S. Bultje <rsbultje@gmail.com> | 2012-02-16 20:28:14 -0800 |
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committer | Ronald S. Bultje <rsbultje@gmail.com> | 2012-02-16 21:43:20 -0800 |
commit | 25c42234a981477693dd419932575de0178e6aa5 (patch) | |
tree | ed0cf5e82da81c707b5256165191b9960e4f7c0f /libswscale/output.c | |
parent | 52e4018be47697a60f4f18f83551766df31f5adf (diff) | |
download | ffmpeg-25c42234a981477693dd419932575de0178e6aa5.tar.gz |
swscale: make monowhite/black RGB-independent.
Disadvantage is that it no longer allows modifying brightness through
adjustment of the RGB lookup table. Advantage is that now monowhite/black
no longer need to be identified as a RGB format.
Diffstat (limited to 'libswscale/output.c')
-rw-r--r-- | libswscale/output.c | 57 |
1 files changed, 36 insertions, 21 deletions
diff --git a/libswscale/output.c b/libswscale/output.c index b29018f2bb..8263da1f5e 100644 --- a/libswscale/output.c +++ b/libswscale/output.c @@ -295,6 +295,9 @@ static void yuv2nv12cX_c(SwsContext *c, const int16_t *chrFilter, int chrFilterS } } +#define accumulate_bit(acc, val) \ + acc <<= 1; \ + acc |= (val) >= (128 + 110) #define output_pixel(pos, acc) \ if (target == PIX_FMT_MONOBLACK) { \ pos = acc; \ @@ -311,7 +314,6 @@ yuv2mono_X_c_template(SwsContext *c, const int16_t *lumFilter, int y, enum PixelFormat target) { const uint8_t * const d128=dither_8x8_220[y&7]; - uint8_t *g = c->table_gU[128] + c->table_gV[128]; int i; unsigned acc = 0; @@ -330,8 +332,8 @@ yuv2mono_X_c_template(SwsContext *c, const int16_t *lumFilter, Y1 = av_clip_uint8(Y1); Y2 = av_clip_uint8(Y2); } - acc += acc + g[Y1 + d128[(i + 0) & 7]]; - acc += acc + g[Y2 + d128[(i + 1) & 7]]; + accumulate_bit(acc, Y1 + d128[(i + 0) & 7]); + accumulate_bit(acc, Y2 + d128[(i + 1) & 7]); if ((i & 7) == 6) { output_pixel(*dest++, acc); } @@ -347,19 +349,29 @@ yuv2mono_2_c_template(SwsContext *c, const int16_t *buf[2], { const int16_t *buf0 = buf[0], *buf1 = buf[1]; const uint8_t * const d128 = dither_8x8_220[y & 7]; - uint8_t *g = c->table_gU[128] + c->table_gV[128]; int yalpha1 = 4095 - yalpha; int i; for (i = 0; i < dstW - 7; i += 8) { - int acc = g[((buf0[i ] * yalpha1 + buf1[i ] * yalpha) >> 19) + d128[0]]; - acc += acc + g[((buf0[i + 1] * yalpha1 + buf1[i + 1] * yalpha) >> 19) + d128[1]]; - acc += acc + g[((buf0[i + 2] * yalpha1 + buf1[i + 2] * yalpha) >> 19) + d128[2]]; - acc += acc + g[((buf0[i + 3] * yalpha1 + buf1[i + 3] * yalpha) >> 19) + d128[3]]; - acc += acc + g[((buf0[i + 4] * yalpha1 + buf1[i + 4] * yalpha) >> 19) + d128[4]]; - acc += acc + g[((buf0[i + 5] * yalpha1 + buf1[i + 5] * yalpha) >> 19) + d128[5]]; - acc += acc + g[((buf0[i + 6] * yalpha1 + buf1[i + 6] * yalpha) >> 19) + d128[6]]; - acc += acc + g[((buf0[i + 7] * yalpha1 + buf1[i + 7] * yalpha) >> 19) + d128[7]]; + int Y, acc = 0; + + Y = (buf0[i + 0] * yalpha1 + buf1[i + 0] * yalpha) >> 19; + accumulate_bit(acc, Y + d128[0]); + Y = (buf0[i + 1] * yalpha1 + buf1[i + 1] * yalpha) >> 19; + accumulate_bit(acc, Y + d128[1]); + Y = (buf0[i + 2] * yalpha1 + buf1[i + 2] * yalpha) >> 19; + accumulate_bit(acc, Y + d128[2]); + Y = (buf0[i + 3] * yalpha1 + buf1[i + 3] * yalpha) >> 19; + accumulate_bit(acc, Y + d128[3]); + Y = (buf0[i + 4] * yalpha1 + buf1[i + 4] * yalpha) >> 19; + accumulate_bit(acc, Y + d128[4]); + Y = (buf0[i + 5] * yalpha1 + buf1[i + 5] * yalpha) >> 19; + accumulate_bit(acc, Y + d128[5]); + Y = (buf0[i + 6] * yalpha1 + buf1[i + 6] * yalpha) >> 19; + accumulate_bit(acc, Y + d128[6]); + Y = (buf0[i + 7] * yalpha1 + buf1[i + 7] * yalpha) >> 19; + accumulate_bit(acc, Y + d128[7]); + output_pixel(*dest++, acc); } } @@ -371,23 +383,26 @@ yuv2mono_1_c_template(SwsContext *c, const int16_t *buf0, int uvalpha, int y, enum PixelFormat target) { const uint8_t * const d128 = dither_8x8_220[y & 7]; - uint8_t *g = c->table_gU[128] + c->table_gV[128]; int i; for (i = 0; i < dstW - 7; i += 8) { - int acc = g[(buf0[i ] >> 7) + d128[0]]; - acc += acc + g[(buf0[i + 1] >> 7) + d128[1]]; - acc += acc + g[(buf0[i + 2] >> 7) + d128[2]]; - acc += acc + g[(buf0[i + 3] >> 7) + d128[3]]; - acc += acc + g[(buf0[i + 4] >> 7) + d128[4]]; - acc += acc + g[(buf0[i + 5] >> 7) + d128[5]]; - acc += acc + g[(buf0[i + 6] >> 7) + d128[6]]; - acc += acc + g[(buf0[i + 7] >> 7) + d128[7]]; + int acc = 0; + + accumulate_bit(acc, (buf0[i + 0] >> 7) + d128[0]); + accumulate_bit(acc, (buf0[i + 1] >> 7) + d128[1]); + accumulate_bit(acc, (buf0[i + 2] >> 7) + d128[2]); + accumulate_bit(acc, (buf0[i + 3] >> 7) + d128[3]); + accumulate_bit(acc, (buf0[i + 4] >> 7) + d128[4]); + accumulate_bit(acc, (buf0[i + 5] >> 7) + d128[5]); + accumulate_bit(acc, (buf0[i + 6] >> 7) + d128[6]); + accumulate_bit(acc, (buf0[i + 7] >> 7) + d128[7]); + output_pixel(*dest++, acc); } } #undef output_pixel +#undef accumulate_bit #define YUV2PACKEDWRAPPER(name, base, ext, fmt) \ static void name ## ext ## _X_c(SwsContext *c, const int16_t *lumFilter, \ |