diff options
author | Kostya Shishkov <kostya.shishkov@gmail.com> | 2006-08-31 08:44:54 +0400 |
---|---|---|
committer | Kostya Shishkov <kostya.shishkov@gmail.com> | 2006-08-31 08:44:54 +0400 |
commit | 74691b7bcb0f3a0e4fb3e15dcc1a3270237079b7 (patch) | |
tree | aca962e181feb55b3e8a984e6dae4bc424062274 /libavcodec/vc1dsp.c | |
parent | 2d5eadccb5c96b461861ad0a3434863615f80867 (diff) |
New qpel MC functions conforming to VC-1 standard.
Existing DSPUtil functions cause chroma artifacts on some files.
Originally committed as revision 6139 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec/vc1dsp.c')
-rw-r--r-- | libavcodec/vc1dsp.c | 180 |
1 files changed, 180 insertions, 0 deletions
diff --git a/libavcodec/vc1dsp.c b/libavcodec/vc1dsp.c index 16fe31b90d..3b2801e501 100644 --- a/libavcodec/vc1dsp.c +++ b/libavcodec/vc1dsp.c @@ -424,6 +424,169 @@ static void ff_put_vc1_mspel_mc33_c(uint8_t *dst, const uint8_t *src, int stride vc1_mspel_mc(dst, src, stride, 0xF, rnd); } +/** Filter used to interpolate fractional pel values + * except for half-pel cases for _mcXY: + * A = (4-X)*(4-Y) + * B = X *(4-Y) + * C = (4-X)* Y + * D = X * Y + */ +#define VC1_QPEL_FILTER(src, i, stride, rnd, A, B, C, D) \ + clip_uint8((A*src[i] + B*src[i+1] + C*src[i+stride] + D*src[i+stride+1] + 8 - rnd) >> 4) + +/* this one is defined in dsputil.c */ +void ff_put_vc1_qpel_mc00_c(uint8_t *dst, const uint8_t *src, int stride, int rnd); + +static void ff_put_vc1_qpel_mc10_c(uint8_t *dst, const uint8_t *src, int stride, int rnd) { + int i, j; + for(j = 0; j < 8; j++) { + for(i = 0; i < 8; i++) + dst[i] = VC1_QPEL_FILTER(src, i, stride, rnd, 12, 4, 0, 0); + dst += stride; + src += stride; + } +} + +static void ff_put_vc1_qpel_mc20_c(uint8_t *dst, const uint8_t *src, int stride, int rnd) { + int i, j; + for(j = 0; j < 8; j++) { + for(i = 0; i < 8; i++) + dst[i] = clip_uint8((src[i] + src[i + 1] + 1 - rnd) >> 1); + dst += stride; + src += stride; + } +} + +static void ff_put_vc1_qpel_mc30_c(uint8_t *dst, const uint8_t *src, int stride, int rnd) { + int i, j; + for(j = 0; j < 8; j++) { + for(i = 0; i < 8; i++) + dst[i] = VC1_QPEL_FILTER(src, i, stride, rnd, 4, 12, 0, 0); + dst += stride; + src += stride; + } +} + +static void ff_put_vc1_qpel_mc01_c(uint8_t *dst, const uint8_t *src, int stride, int rnd) { + int i, j; + for(j = 0; j < 8; j++) { + for(i = 0; i < 8; i++) + dst[i] = VC1_QPEL_FILTER(src, i, stride, rnd, 12, 0, 4, 0); + dst += stride; + src += stride; + } +} + +static void ff_put_vc1_qpel_mc11_c(uint8_t *dst, const uint8_t *src, int stride, int rnd) { + int i, j; + for(j = 0; j < 8; j++) { + for(i = 0; i < 8; i++) + dst[i] = VC1_QPEL_FILTER(src, i, stride, rnd, 9, 3, 3, 1); + dst += stride; + src += stride; + } +} + +static void ff_put_vc1_qpel_mc21_c(uint8_t *dst, const uint8_t *src, int stride, int rnd) { + int i, j; + for(j = 0; j < 8; j++) { + for(i = 0; i < 8; i++) + dst[i] = VC1_QPEL_FILTER(src, i, stride, rnd, 6, 6, 2, 2); + dst += stride; + src += stride; + } +} + +static void ff_put_vc1_qpel_mc31_c(uint8_t *dst, const uint8_t *src, int stride, int rnd) { + int i, j; + for(j = 0; j < 8; j++) { + for(i = 0; i < 8; i++) + dst[i] = VC1_QPEL_FILTER(src, i, stride, rnd, 3, 9, 1, 3); + dst += stride; + src += stride; + } +} + +static void ff_put_vc1_qpel_mc02_c(uint8_t *dst, const uint8_t *src, int stride, int rnd) { + int i, j; + for(j = 0; j < 8; j++) { + for(i = 0; i < 8; i++) + dst[i] = clip_uint8((src[i] + src[i + stride] + 1 - rnd) >> 1); + dst += stride; + src += stride; + } +} + +static void ff_put_vc1_qpel_mc12_c(uint8_t *dst, const uint8_t *src, int stride, int rnd) { + int i, j; + for(j = 0; j < 8; j++) { + for(i = 0; i < 8; i++) + dst[i] = VC1_QPEL_FILTER(src, i, stride, rnd, 6, 2, 6, 2); + dst += stride; + src += stride; + } +} + +static void ff_put_vc1_qpel_mc22_c(uint8_t *dst, const uint8_t *src, int stride, int rnd) { + int i, j; + for(j = 0; j < 8; j++) { + for(i = 0; i < 8; i++) + dst[i] = clip_uint8((src[i] + src[i + 1] + src[i + stride] + src[i + stride + 1] + 2 - rnd) >> 2); + dst += stride; + src += stride; + } +} + +static void ff_put_vc1_qpel_mc32_c(uint8_t *dst, const uint8_t *src, int stride, int rnd) { + int i, j; + for(j = 0; j < 8; j++) { + for(i = 0; i < 8; i++) + dst[i] = VC1_QPEL_FILTER(src, i, stride, rnd, 2, 6, 2, 6); + dst += stride; + src += stride; + } +} + +static void ff_put_vc1_qpel_mc03_c(uint8_t *dst, const uint8_t *src, int stride, int rnd) { + int i, j; + for(j = 0; j < 8; j++) { + for(i = 0; i < 8; i++) + dst[i] = VC1_QPEL_FILTER(src, i, stride, rnd, 4, 0, 12, 0); + dst += stride; + src += stride; + } +} + +static void ff_put_vc1_qpel_mc13_c(uint8_t *dst, const uint8_t *src, int stride, int rnd) { + int i, j; + for(j = 0; j < 8; j++) { + for(i = 0; i < 8; i++) + dst[i] = VC1_QPEL_FILTER(src, i, stride, rnd, 3, 1, 9, 3); + dst += stride; + src += stride; + } +} + +static void ff_put_vc1_qpel_mc23_c(uint8_t *dst, const uint8_t *src, int stride, int rnd) { + int i, j; + for(j = 0; j < 8; j++) { + for(i = 0; i < 8; i++) + dst[i] = VC1_QPEL_FILTER(src, i, stride, rnd, 2, 2, 6, 6); + dst += stride; + src += stride; + } +} + +static void ff_put_vc1_qpel_mc33_c(uint8_t *dst, const uint8_t *src, int stride, int rnd) { + int i, j; + for(j = 0; j < 8; j++) { + for(i = 0; i < 8; i++) + dst[i] = VC1_QPEL_FILTER(src, i, stride, rnd, 1, 3, 3, 9); + dst += stride; + src += stride; + } +} + void ff_vc1dsp_init(DSPContext* dsp, AVCodecContext *avctx) { dsp->vc1_inv_trans_8x8 = vc1_inv_trans_8x8_c; dsp->vc1_inv_trans_4x8 = vc1_inv_trans_4x8_c; @@ -448,4 +611,21 @@ void ff_vc1dsp_init(DSPContext* dsp, AVCodecContext *avctx) { dsp->put_vc1_mspel_pixels_tab[13] = ff_put_vc1_mspel_mc13_c; dsp->put_vc1_mspel_pixels_tab[14] = ff_put_vc1_mspel_mc23_c; dsp->put_vc1_mspel_pixels_tab[15] = ff_put_vc1_mspel_mc33_c; + + dsp->put_vc1_qpel_pixels_tab[ 0] = ff_put_vc1_qpel_mc00_c; + dsp->put_vc1_qpel_pixels_tab[ 1] = ff_put_vc1_qpel_mc10_c; + dsp->put_vc1_qpel_pixels_tab[ 2] = ff_put_vc1_qpel_mc20_c; + dsp->put_vc1_qpel_pixels_tab[ 3] = ff_put_vc1_qpel_mc30_c; + dsp->put_vc1_qpel_pixels_tab[ 4] = ff_put_vc1_qpel_mc01_c; + dsp->put_vc1_qpel_pixels_tab[ 5] = ff_put_vc1_qpel_mc11_c; + dsp->put_vc1_qpel_pixels_tab[ 6] = ff_put_vc1_qpel_mc21_c; + dsp->put_vc1_qpel_pixels_tab[ 7] = ff_put_vc1_qpel_mc31_c; + dsp->put_vc1_qpel_pixels_tab[ 8] = ff_put_vc1_qpel_mc02_c; + dsp->put_vc1_qpel_pixels_tab[ 9] = ff_put_vc1_qpel_mc12_c; + dsp->put_vc1_qpel_pixels_tab[10] = ff_put_vc1_qpel_mc22_c; + dsp->put_vc1_qpel_pixels_tab[11] = ff_put_vc1_qpel_mc32_c; + dsp->put_vc1_qpel_pixels_tab[12] = ff_put_vc1_qpel_mc03_c; + dsp->put_vc1_qpel_pixels_tab[13] = ff_put_vc1_qpel_mc13_c; + dsp->put_vc1_qpel_pixels_tab[14] = ff_put_vc1_qpel_mc23_c; + dsp->put_vc1_qpel_pixels_tab[15] = ff_put_vc1_qpel_mc33_c; } |