From 45ecda855405f102bcc5d8fbadc5f2376e8e9c42 Mon Sep 17 00:00:00 2001 From: Alberto Delmás Date: Wed, 17 Aug 2011 14:24:42 +0200 Subject: Windows Media Image decoder (WMVP/WVP2) Signed-off-by: Anton Khirnov --- libavcodec/vc1dsp.c | 68 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 68 insertions(+) (limited to 'libavcodec/vc1dsp.c') diff --git a/libavcodec/vc1dsp.c b/libavcodec/vc1dsp.c index 7d0e406677..4dd56727c7 100644 --- a/libavcodec/vc1dsp.c +++ b/libavcodec/vc1dsp.c @@ -713,6 +713,66 @@ static void avg_no_rnd_vc1_chroma_mc8_c(uint8_t *dst/*align 8*/, uint8_t *src/*a } } +#if CONFIG_WMV3IMAGE_DECODER || CONFIG_VC1IMAGE_DECODER + +static void sprite_h_c(uint8_t *dst, const uint8_t *src, int offset, int advance, int count) +{ + while (count--) { + int a = src[(offset >> 16) ]; + int b = src[(offset >> 16) + 1]; + *dst++ = a + ((b - a) * (offset&0xFFFF) >> 16); + offset += advance; + } +} + +static av_always_inline void sprite_v_template(uint8_t *dst, const uint8_t *src1a, const uint8_t *src1b, int offset1, + int two_sprites, const uint8_t *src2a, const uint8_t *src2b, int offset2, + int alpha, int scaled, int width) +{ + int a1, b1, a2, b2; + while (width--) { + a1 = *src1a++; + if (scaled) { + b1 = *src1b++; + a1 = a1 + ((b1 - a1) * offset1 >> 16); + } + if (two_sprites) { + a2 = *src2a++; + if (scaled > 1) { + b2 = *src2b++; + a2 = a2 + ((b2 - a2) * offset2 >> 16); + } + a1 = a1 + ((a2 - a1) * alpha >> 16); + } + *dst++ = a1; + } +} + +static void sprite_v_single_c(uint8_t *dst, const uint8_t *src1a, const uint8_t *src1b, int offset, int width) +{ + sprite_v_template(dst, src1a, src1b, offset, 0, NULL, NULL, 0, 0, 1, width); +} + +static void sprite_v_double_noscale_c(uint8_t *dst, const uint8_t *src1a, const uint8_t *src2a, int alpha, int width) +{ + sprite_v_template(dst, src1a, NULL, 0, 1, src2a, NULL, 0, alpha, 0, width); +} + +static void sprite_v_double_onescale_c(uint8_t *dst, const uint8_t *src1a, const uint8_t *src1b, int offset1, + const uint8_t *src2a, int alpha, int width) +{ + sprite_v_template(dst, src1a, src1b, offset1, 1, src2a, NULL, 0, alpha, 1, width); +} + +static void sprite_v_double_twoscale_c(uint8_t *dst, const uint8_t *src1a, const uint8_t *src1b, int offset1, + const uint8_t *src2a, const uint8_t *src2b, int offset2, + int alpha, int width) +{ + sprite_v_template(dst, src1a, src1b, offset1, 1, src2a, src2b, offset2, alpha, 2, width); +} + +#endif + av_cold void ff_vc1dsp_init(VC1DSPContext* dsp) { dsp->vc1_inv_trans_8x8 = vc1_inv_trans_8x8_c; dsp->vc1_inv_trans_4x8 = vc1_inv_trans_4x8_c; @@ -770,6 +830,14 @@ av_cold void ff_vc1dsp_init(VC1DSPContext* dsp) { dsp->put_no_rnd_vc1_chroma_pixels_tab[0]= put_no_rnd_vc1_chroma_mc8_c; dsp->avg_no_rnd_vc1_chroma_pixels_tab[0]= avg_no_rnd_vc1_chroma_mc8_c; +#if CONFIG_WMV3IMAGE_DECODER || CONFIG_VC1IMAGE_DECODER + dsp->sprite_h = sprite_h_c; + dsp->sprite_v_single = sprite_v_single_c; + dsp->sprite_v_double_noscale = sprite_v_double_noscale_c; + dsp->sprite_v_double_onescale = sprite_v_double_onescale_c; + dsp->sprite_v_double_twoscale = sprite_v_double_twoscale_c; +#endif + if (HAVE_ALTIVEC) ff_vc1dsp_init_altivec(dsp); if (HAVE_MMX) -- cgit v1.2.3