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https://github.com/webmproject/libwebp.git
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Add SSE2 version of ARGB -> BGR/RGB/... conversion functions
~4-6% faster lossless decoding Change-Id: I3ed1131ff2b2a0217da315fac143cd0d58293361
This commit is contained in:
skal
@@ -1537,13 +1537,7 @@ static void SubtractGreenFromBlueAndRedSSE2(uint32_t* argb_data, int num_pixs) {
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_mm_storeu_si128((__m128i*)&argb_data[i], out);
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}
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// fallthrough and finish off with plain-C
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for (; i < num_pixs; ++i) {
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const uint32_t argb = argb_data[i];
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const uint32_t green = (argb >> 8) & 0xff;
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const uint32_t new_r = (((argb >> 16) & 0xff) - green) & 0xff;
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const uint32_t new_b = ((argb & 0xff) - green) & 0xff;
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argb_data[i] = (argb & 0xff00ff00) | (new_r << 16) | new_b;
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}
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SubtractGreenFromBlueAndRed(argb_data + i, num_pixs - i);
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}
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static void AddGreenToBlueAndRedSSE2(uint32_t* data, const uint32_t* data_end) {
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@@ -1558,14 +1552,138 @@ static void AddGreenToBlueAndRedSSE2(uint32_t* data, const uint32_t* data_end) {
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_mm_storeu_si128((__m128i*)data, out);
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}
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// fallthrough and finish off with plain-C
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while (data < data_end) {
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const uint32_t argb = *data;
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const uint32_t green = ((argb >> 8) & 0xff);
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uint32_t red_blue = (argb & 0x00ff00ffu);
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red_blue += (green << 16) | green;
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red_blue &= 0x00ff00ffu;
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*data++ = (argb & 0xff00ff00u) | red_blue;
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AddGreenToBlueAndRed(data, data_end);
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}
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static void ConvertBGRAToRGBASSE2(const uint32_t* src,
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int num_pixels, uint8_t* dst) {
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const __m128i* in = (const __m128i*)src;
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__m128i* out = (__m128i*)dst;
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while (num_pixels >= 8) {
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const __m128i bgra0 = _mm_loadu_si128(in++); // bgra0|bgra1|bgra2|bgra3
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const __m128i bgra4 = _mm_loadu_si128(in++); // bgra4|bgra5|bgra6|bgra7
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const __m128i v0l = _mm_unpacklo_epi8(bgra0, bgra4); // b0b4g0g4r0r4a0a4...
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const __m128i v0h = _mm_unpackhi_epi8(bgra0, bgra4); // b2b6g2g6r2r6a2a6...
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const __m128i v1l = _mm_unpacklo_epi8(v0l, v0h); // b0b2b4b6g0g2g4g6...
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const __m128i v1h = _mm_unpackhi_epi8(v0l, v0h); // b1b3b5b7g1g3g5g7...
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const __m128i v2l = _mm_unpacklo_epi8(v1l, v1h); // b0...b7 | g0...g7
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const __m128i v2h = _mm_unpackhi_epi8(v1l, v1h); // r0...r7 | a0...a7
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const __m128i ga0 = _mm_unpackhi_epi64(v2l, v2h); // g0...g7 | a0...a7
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const __m128i rb0 = _mm_unpacklo_epi64(v2h, v2l); // r0...r7 | b0...b7
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const __m128i rg0 = _mm_unpacklo_epi8(rb0, ga0); // r0g0r1g1 ... r6g6r7g7
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const __m128i ba0 = _mm_unpackhi_epi8(rb0, ga0); // b0a0b1a1 ... b6a6b7a7
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const __m128i rgba0 = _mm_unpacklo_epi16(rg0, ba0); // rgba0|rgba1...
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const __m128i rgba4 = _mm_unpackhi_epi16(rg0, ba0); // rgba4|rgba5...
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_mm_storeu_si128(out++, rgba0);
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_mm_storeu_si128(out++, rgba4);
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num_pixels -= 8;
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}
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// left-overs
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ConvertBGRAToRGBA((const uint32_t*)in, num_pixels, (uint8_t*)out);
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}
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static void ConvertBGRAToRGBA4444SSE2(const uint32_t* src,
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int num_pixels, uint8_t* dst) {
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const __m128i mask_0x0f = _mm_set1_epi8(0x0f);
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const __m128i mask_0xf0 = _mm_set1_epi8(0xf0);
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const __m128i* in = (const __m128i*)src;
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__m128i* out = (__m128i*)dst;
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while (num_pixels >= 8) {
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const __m128i bgra0 = _mm_loadu_si128(in++); // bgra0|bgra1|bgra2|bgra3
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const __m128i bgra4 = _mm_loadu_si128(in++); // bgra4|bgra5|bgra6|bgra7
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const __m128i v0l = _mm_unpacklo_epi8(bgra0, bgra4); // b0b4g0g4r0r4a0a4...
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const __m128i v0h = _mm_unpackhi_epi8(bgra0, bgra4); // b2b6g2g6r2r6a2a6...
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const __m128i v1l = _mm_unpacklo_epi8(v0l, v0h); // b0b2b4b6g0g2g4g6...
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const __m128i v1h = _mm_unpackhi_epi8(v0l, v0h); // b1b3b5b7g1g3g5g7...
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const __m128i v2l = _mm_unpacklo_epi8(v1l, v1h); // b0...b7 | g0...g7
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const __m128i v2h = _mm_unpackhi_epi8(v1l, v1h); // r0...r7 | a0...a7
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const __m128i ga0 = _mm_unpackhi_epi64(v2l, v2h); // g0...g7 | a0...a7
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const __m128i rb0 = _mm_unpacklo_epi64(v2h, v2l); // r0...r7 | b0...b7
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const __m128i ga1 = _mm_srli_epi16(ga0, 4); // g0-|g1-|...|a6-|a7-
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const __m128i rb1 = _mm_and_si128(rb0, mask_0xf0); // -r0|-r1|...|-b6|-a7
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const __m128i ga2 = _mm_and_si128(ga1, mask_0x0f); // g0-|g1-|...|a6-|a7-
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const __m128i rgba0 = _mm_or_si128(ga2, rb1); // rg0..rg7 | ba0..ba7
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const __m128i rgba1 = _mm_srli_si128(rgba0, 8); // ba0..ba7 | 0
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#ifdef WEBP_SWAP_16BIT_CSP
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const __m128i rgba = _mm_unpacklo_epi8(rgba1, rgba0); // barg0...barg7
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#else
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const __m128i rgba = _mm_unpacklo_epi8(rgba0, rgba1); // rgba0...rgba7
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#endif
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_mm_storeu_si128(out++, rgba);
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num_pixels -= 8;
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}
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// left-overs
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ConvertBGRAToRGBA4444((const uint32_t*)in, num_pixels, (uint8_t*)out);
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}
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static void ConvertBGRAToRGB565SSE2(const uint32_t* src,
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int num_pixels, uint8_t* dst) {
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const __m128i mask_0xe0 = _mm_set1_epi8(0xe0);
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const __m128i mask_0xf8 = _mm_set1_epi8(0xf8);
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const __m128i mask_0x07 = _mm_set1_epi8(0x07);
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const __m128i* in = (const __m128i*)src;
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__m128i* out = (__m128i*)dst;
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while (num_pixels >= 8) {
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const __m128i bgra0 = _mm_loadu_si128(in++); // bgra0|bgra1|bgra2|bgra3
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const __m128i bgra4 = _mm_loadu_si128(in++); // bgra4|bgra5|bgra6|bgra7
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const __m128i v0l = _mm_unpacklo_epi8(bgra0, bgra4); // b0b4g0g4r0r4a0a4...
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const __m128i v0h = _mm_unpackhi_epi8(bgra0, bgra4); // b2b6g2g6r2r6a2a6...
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const __m128i v1l = _mm_unpacklo_epi8(v0l, v0h); // b0b2b4b6g0g2g4g6...
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const __m128i v1h = _mm_unpackhi_epi8(v0l, v0h); // b1b3b5b7g1g3g5g7...
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const __m128i v2l = _mm_unpacklo_epi8(v1l, v1h); // b0...b7 | g0...g7
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const __m128i v2h = _mm_unpackhi_epi8(v1l, v1h); // r0...r7 | a0...a7
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const __m128i ga0 = _mm_unpackhi_epi64(v2l, v2h); // g0...g7 | a0...a7
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const __m128i rb0 = _mm_unpacklo_epi64(v2h, v2l); // r0...r7 | b0...b7
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const __m128i rb1 = _mm_and_si128(rb0, mask_0xf8); // -r0..-r7|-b0..-b7
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const __m128i g_lo1 = _mm_srli_epi16(ga0, 5);
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const __m128i g_lo2 = _mm_and_si128(g_lo1, mask_0x07); // g0-...g7-|xx (3b)
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const __m128i g_hi1 = _mm_slli_epi16(ga0, 3);
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const __m128i g_hi2 = _mm_and_si128(g_hi1, mask_0xe0); // -g0...-g7|xx (3b)
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const __m128i b0 = _mm_srli_si128(rb1, 8); // -b0...-b7|0
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const __m128i rg1 = _mm_or_si128(rb1, g_lo2); // gr0...gr7|xx
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const __m128i b1 = _mm_srli_epi16(b0, 3);
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const __m128i gb1 = _mm_or_si128(b1, g_hi2); // bg0...bg7|xx
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#ifdef WEBP_SWAP_16BIT_CSP
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const __m128i rgba = _mm_unpacklo_epi8(gb1, rg1); // rggb0...rggb7
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#else
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const __m128i rgba = _mm_unpacklo_epi8(rg1, gb1); // bgrb0...bgrb7
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#endif
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_mm_storeu_si128(out++, rgba);
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num_pixels -= 8;
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}
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// left-overs
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ConvertBGRAToRGB565((const uint32_t*)in, num_pixels, (uint8_t*)out);
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}
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static void ConvertBGRAToBGRSSE2(const uint32_t* src,
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int num_pixels, uint8_t* dst) {
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const __m128i mask_l = _mm_set_epi32(0, 0x00ffffff, 0, 0x00ffffff);
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const __m128i mask_h = _mm_set_epi32(0x00ffffff, 0, 0x00ffffff, 0);
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const __m128i* in = (const __m128i*)src;
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const uint8_t* const end = dst + num_pixels * 3;
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// the last storel_epi64 below writes 8 bytes starting at offset 18
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while (dst + 26 <= end) {
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const __m128i bgra0 = _mm_loadu_si128(in++); // bgra0|bgra1|bgra2|bgra3
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const __m128i bgra4 = _mm_loadu_si128(in++); // bgra4|bgra5|bgra6|bgra7
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const __m128i a0l = _mm_and_si128(bgra0, mask_l); // bgr0|0|bgr0|0
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const __m128i a4l = _mm_and_si128(bgra4, mask_l); // bgr0|0|bgr0|0
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const __m128i a0h = _mm_and_si128(bgra0, mask_h); // 0|bgr0|0|bgr0
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const __m128i a4h = _mm_and_si128(bgra4, mask_h); // 0|bgr0|0|bgr0
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const __m128i b0h = _mm_srli_epi64(a0h, 8); // 000b|gr00|000b|gr00
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const __m128i b4h = _mm_srli_epi64(a4h, 8); // 000b|gr00|000b|gr00
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const __m128i c0 = _mm_or_si128(a0l, b0h); // rgbrgb00|rgbrgb00
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const __m128i c4 = _mm_or_si128(a4l, b4h); // rgbrgb00|rgbrgb00
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const __m128i c2 = _mm_srli_si128(c0, 8);
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const __m128i c6 = _mm_srli_si128(c4, 8);
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_mm_storel_epi64((__m128i*)(dst + 0), c0);
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_mm_storel_epi64((__m128i*)(dst + 6), c2);
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_mm_storel_epi64((__m128i*)(dst + 12), c4);
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_mm_storel_epi64((__m128i*)(dst + 18), c6);
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dst += 24;
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num_pixels -= 8;
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}
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// left-overs
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ConvertBGRAToBGR((const uint32_t*)in, num_pixels, dst);
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}
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extern void VP8LDspInitSSE2(void);
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@@ -1576,8 +1694,14 @@ void VP8LDspInitSSE2(void) {
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VP8LSelect = SelectSSE2;
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VP8LSubtractGreenFromBlueAndRed = SubtractGreenFromBlueAndRedSSE2;
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VP8LAddGreenToBlueAndRed = AddGreenToBlueAndRedSSE2;
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VP8LConvertBGRAToRGBAFunc = ConvertBGRAToRGBASSE2;
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VP8LConvertBGRAToRGBA4444Func = ConvertBGRAToRGBA4444SSE2;
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VP8LConvertBGRAToRGB565Func = ConvertBGRAToRGB565SSE2;
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VP8LConvertBGRAToBGRFunc = ConvertBGRAToBGRSSE2;
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}
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#endif
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#endif // WEBP_USE_SSE2
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//------------------------------------------------------------------------------
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VP8LPredClampedAddSubFunc VP8LClampedAddSubtractFull;
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@@ -1586,6 +1710,12 @@ VP8LPredSelectFunc VP8LSelect;
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VP8LSubtractGreenFromBlueAndRedFunc VP8LSubtractGreenFromBlueAndRed;
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VP8LAddGreenToBlueAndRedFunc VP8LAddGreenToBlueAndRed;
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VP8LConvertFunc VP8LConvertBGRAToRGBFunc;
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VP8LConvertFunc VP8LConvertBGRAToRGBAFunc;
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VP8LConvertFunc VP8LConvertBGRAToRGBA4444Func;
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VP8LConvertFunc VP8LConvertBGRAToRGB565Func;
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VP8LConvertFunc VP8LConvertBGRAToBGRFunc;
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void VP8LDspInit(void) {
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VP8LClampedAddSubtractFull = ClampedAddSubtractFull;
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VP8LClampedAddSubtractHalf = ClampedAddSubtractHalf;
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@@ -1593,6 +1723,12 @@ void VP8LDspInit(void) {
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VP8LSubtractGreenFromBlueAndRed = SubtractGreenFromBlueAndRed;
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VP8LAddGreenToBlueAndRed = AddGreenToBlueAndRed;
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VP8LConvertBGRAToRGBFunc = ConvertBGRAToRGB;
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VP8LConvertBGRAToRGBAFunc = ConvertBGRAToRGBA;
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VP8LConvertBGRAToRGBA4444Func = ConvertBGRAToRGBA4444;
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VP8LConvertBGRAToRGB565Func = ConvertBGRAToRGB565;
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VP8LConvertBGRAToBGRFunc = ConvertBGRAToBGR;
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// If defined, use CPUInfo() to overwrite some pointers with faster versions.
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if (VP8GetCPUInfo != NULL) {
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#if defined(WEBP_USE_SSE2)
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@@ -39,6 +39,14 @@ extern VP8LPredSelectFunc VP8LSelect;
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extern VP8LSubtractGreenFromBlueAndRedFunc VP8LSubtractGreenFromBlueAndRed;
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extern VP8LAddGreenToBlueAndRedFunc VP8LAddGreenToBlueAndRed;
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typedef void (*VP8LConvertFunc)(const uint32_t* src, int num_pixels,
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uint8_t* dst);
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extern VP8LConvertFunc VP8LConvertBGRAToRGBFunc;
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extern VP8LConvertFunc VP8LConvertBGRAToRGBAFunc;
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extern VP8LConvertFunc VP8LConvertBGRAToRGBA4444Func;
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extern VP8LConvertFunc VP8LConvertBGRAToRGB565Func;
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extern VP8LConvertFunc VP8LConvertBGRAToBGRFunc;
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// Must be called before calling any of the above methods.
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void VP8LDspInit(void);
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