diff options
Diffstat (limited to 'libavcodec')
-rw-r--r-- | libavcodec/huffyuvdec.c | 21 | ||||
-rw-r--r-- | libavcodec/lossless_videodsp.c | 21 | ||||
-rw-r--r-- | libavcodec/lossless_videodsp.h | 1 |
3 files changed, 23 insertions, 20 deletions
diff --git a/libavcodec/huffyuvdec.c b/libavcodec/huffyuvdec.c index 26c8309..59d58a8 100644 --- a/libavcodec/huffyuvdec.c +++ b/libavcodec/huffyuvdec.c @@ -680,26 +680,7 @@ static int left_prediction(HYuvContext *s, uint8_t *dst, const uint8_t *src, int if (s->bps <= 8) { return s->dsp.add_hfyu_left_prediction(dst, src, w, acc); } else { - //FIXME optimize - unsigned mask = s->n-1; - int i; - const uint16_t *src16 = (const uint16_t *)src; - uint16_t *dst16 = ( uint16_t *)dst; - - for(i=0; i<w-1; i++){ - acc+= src16[i]; - dst16[i]= acc & mask; - i++; - acc+= src16[i]; - dst16[i]= acc & mask; - } - - for(; i<w; i++){ - acc+= src16[i]; - dst16[i]= acc & mask; - } - - return acc; + return s->llviddsp.add_hfyu_left_prediction_int16(( uint16_t *)dst, (const uint16_t *)src, s->n-1, w, acc); } } diff --git a/libavcodec/lossless_videodsp.c b/libavcodec/lossless_videodsp.c index 7654f3e..e494072 100644 --- a/libavcodec/lossless_videodsp.c +++ b/libavcodec/lossless_videodsp.c @@ -59,10 +59,31 @@ static void diff_int16_c(uint16_t *dst, const uint16_t *src1, const uint16_t *sr dst[i] = (src1[i] - src2[i]) & mask; } +static int add_hfyu_left_prediction_int16_c(uint16_t *dst, const uint16_t *src, unsigned mask, int w, int acc){ + int i; + + for(i=0; i<w-1; i++){ + acc+= src[i]; + dst[i]= acc & mask; + i++; + acc+= src[i]; + dst[i]= acc & mask; + } + + for(; i<w; i++){ + acc+= src[i]; + dst[i]= acc & mask; + } + + return acc; +} + + void ff_llviddsp_init(LLVidDSPContext *c) { c->add_int16 = add_int16_c; c->diff_int16= diff_int16_c; + c->add_hfyu_left_prediction_int16 = add_hfyu_left_prediction_int16_c; if (ARCH_X86) ff_llviddsp_init_x86(c); diff --git a/libavcodec/lossless_videodsp.h b/libavcodec/lossless_videodsp.h index 79dcc74..3f768ad 100644 --- a/libavcodec/lossless_videodsp.h +++ b/libavcodec/lossless_videodsp.h @@ -28,6 +28,7 @@ typedef struct LLVidDSPContext { void (*add_int16)(uint16_t *dst/*align 16*/, const uint16_t *src/*align 16*/, unsigned mask, int w); void (*diff_int16)(uint16_t *dst/*align 16*/, const uint16_t *src1/*align 16*/, const uint16_t *src2/*align 1*/, unsigned mask, int w); + int (*add_hfyu_left_prediction_int16)(uint16_t *dst, const uint16_t *src, unsigned mask, int w, int left); } LLVidDSPContext; void ff_llviddsp_init(LLVidDSPContext *llviddsp); |