// be found in the AUTHORS file in the root of the source tree.
// -----------------------------------------------------------------------------
//
-// YUV->RGB conversion function
+// YUV->RGB conversion functions
//
// Author: Skal (pascal.massimino@gmail.com)
#include "./yuv.h"
-
#if defined(WEBP_YUV_USE_TABLE)
static int done = 0;
#endif // WEBP_YUV_USE_TABLE
//-----------------------------------------------------------------------------
-// SSE2 extras
-
-#if defined(WEBP_USE_SSE2)
-
-#ifdef FANCY_UPSAMPLING
-
-#include <emmintrin.h>
-#include <string.h> // for memcpy
-
-typedef union { // handy struct for converting SSE2 registers
- int32_t i32[4];
- uint8_t u8[16];
- __m128i m;
-} VP8kCstSSE2;
-
-static int done_sse2 = 0;
-static VP8kCstSSE2 VP8kUtoRGBA[256], VP8kVtoRGBA[256], VP8kYtoRGBA[256];
-
-void VP8YUVInitSSE2(void) {
- if (!done_sse2) {
- int i;
- for (i = 0; i < 256; ++i) {
- VP8kYtoRGBA[i].i32[0] =
- VP8kYtoRGBA[i].i32[1] =
- VP8kYtoRGBA[i].i32[2] = (i - 16) * kYScale + YUV_HALF2;
- VP8kYtoRGBA[i].i32[3] = 0xff << YUV_FIX2;
-
- VP8kUtoRGBA[i].i32[0] = 0;
- VP8kUtoRGBA[i].i32[1] = -kUToG * (i - 128);
- VP8kUtoRGBA[i].i32[2] = kUToB * (i - 128);
- VP8kUtoRGBA[i].i32[3] = 0;
-
- VP8kVtoRGBA[i].i32[0] = kVToR * (i - 128);
- VP8kVtoRGBA[i].i32[1] = -kVToG * (i - 128);
- VP8kVtoRGBA[i].i32[2] = 0;
- VP8kVtoRGBA[i].i32[3] = 0;
+// Plain-C version
+
+#define ROW_FUNC(FUNC_NAME, FUNC, XSTEP) \
+static void FUNC_NAME(const uint8_t* y, \
+ const uint8_t* u, const uint8_t* v, \
+ uint8_t* dst, int len) { \
+ const uint8_t* const end = dst + (len & ~1) * XSTEP; \
+ while (dst != end) { \
+ FUNC(y[0], u[0], v[0], dst); \
+ FUNC(y[1], u[0], v[0], dst + XSTEP); \
+ y += 2; \
+ ++u; \
+ ++v; \
+ dst += 2 * XSTEP; \
+ } \
+ if (len & 1) { \
+ FUNC(y[0], u[0], v[0], dst); \
+ } \
+} \
+
+// All variants implemented.
+ROW_FUNC(YuvToRgbRow, VP8YuvToRgb, 3)
+ROW_FUNC(YuvToBgrRow, VP8YuvToBgr, 3)
+ROW_FUNC(YuvToRgbaRow, VP8YuvToRgba, 4)
+ROW_FUNC(YuvToBgraRow, VP8YuvToBgra, 4)
+ROW_FUNC(YuvToArgbRow, VP8YuvToArgb, 4)
+ROW_FUNC(YuvToRgba4444Row, VP8YuvToRgba4444, 2)
+ROW_FUNC(YuvToRgb565Row, VP8YuvToRgb565, 2)
+
+#undef ROW_FUNC
+
+// Main call for processing a plane with a WebPSamplerRowFunc function:
+void WebPSamplerProcessPlane(const uint8_t* y, int y_stride,
+ const uint8_t* u, const uint8_t* v, int uv_stride,
+ uint8_t* dst, int dst_stride,
+ int width, int height, WebPSamplerRowFunc func) {
+ int j;
+ for (j = 0; j < height; ++j) {
+ func(y, u, v, dst, width);
+ y += y_stride;
+ if (j & 1) {
+ u += uv_stride;
+ v += uv_stride;
}
- done_sse2 = 1;
- }
-}
-
-static WEBP_INLINE __m128i VP8GetRGBA32b(int y, int u, int v) {
- const __m128i u_part = _mm_loadu_si128(&VP8kUtoRGBA[u].m);
- const __m128i v_part = _mm_loadu_si128(&VP8kVtoRGBA[v].m);
- const __m128i y_part = _mm_loadu_si128(&VP8kYtoRGBA[y].m);
- const __m128i uv_part = _mm_add_epi32(u_part, v_part);
- const __m128i rgba1 = _mm_add_epi32(y_part, uv_part);
- const __m128i rgba2 = _mm_srai_epi32(rgba1, YUV_FIX2);
- return rgba2;
-}
-
-static WEBP_INLINE void VP8YuvToRgbSSE2(uint8_t y, uint8_t u, uint8_t v,
- uint8_t* const rgb) {
- const __m128i tmp0 = VP8GetRGBA32b(y, u, v);
- const __m128i tmp1 = _mm_packs_epi32(tmp0, tmp0);
- const __m128i tmp2 = _mm_packus_epi16(tmp1, tmp1);
- // Note: we store 8 bytes at a time, not 3 bytes! -> memory stomp
- _mm_storel_epi64((__m128i*)rgb, tmp2);
-}
-
-static WEBP_INLINE void VP8YuvToBgrSSE2(uint8_t y, uint8_t u, uint8_t v,
- uint8_t* const bgr) {
- const __m128i tmp0 = VP8GetRGBA32b(y, u, v);
- const __m128i tmp1 = _mm_shuffle_epi32(tmp0, _MM_SHUFFLE(3, 0, 1, 2));
- const __m128i tmp2 = _mm_packs_epi32(tmp1, tmp1);
- const __m128i tmp3 = _mm_packus_epi16(tmp2, tmp2);
- // Note: we store 8 bytes at a time, not 3 bytes! -> memory stomp
- _mm_storel_epi64((__m128i*)bgr, tmp3);
-}
-
-void VP8YuvToRgba32(const uint8_t* y, const uint8_t* u, const uint8_t* v,
- uint8_t* dst) {
- int n;
- for (n = 0; n < 32; n += 4) {
- const __m128i tmp0_1 = VP8GetRGBA32b(y[n + 0], u[n + 0], v[n + 0]);
- const __m128i tmp0_2 = VP8GetRGBA32b(y[n + 1], u[n + 1], v[n + 1]);
- const __m128i tmp0_3 = VP8GetRGBA32b(y[n + 2], u[n + 2], v[n + 2]);
- const __m128i tmp0_4 = VP8GetRGBA32b(y[n + 3], u[n + 3], v[n + 3]);
- const __m128i tmp1_1 = _mm_packs_epi32(tmp0_1, tmp0_2);
- const __m128i tmp1_2 = _mm_packs_epi32(tmp0_3, tmp0_4);
- const __m128i tmp2 = _mm_packus_epi16(tmp1_1, tmp1_2);
- _mm_storeu_si128((__m128i*)dst, tmp2);
- dst += 4 * 4;
- }
-}
-
-void VP8YuvToBgra32(const uint8_t* y, const uint8_t* u, const uint8_t* v,
- uint8_t* dst) {
- int n;
- for (n = 0; n < 32; n += 2) {
- const __m128i tmp0_1 = VP8GetRGBA32b(y[n + 0], u[n + 0], v[n + 0]);
- const __m128i tmp0_2 = VP8GetRGBA32b(y[n + 1], u[n + 1], v[n + 1]);
- const __m128i tmp1_1 = _mm_shuffle_epi32(tmp0_1, _MM_SHUFFLE(3, 0, 1, 2));
- const __m128i tmp1_2 = _mm_shuffle_epi32(tmp0_2, _MM_SHUFFLE(3, 0, 1, 2));
- const __m128i tmp2_1 = _mm_packs_epi32(tmp1_1, tmp1_2);
- const __m128i tmp3 = _mm_packus_epi16(tmp2_1, tmp2_1);
- _mm_storel_epi64((__m128i*)dst, tmp3);
- dst += 4 * 2;
+ dst += dst_stride;
}
}
-void VP8YuvToRgb32(const uint8_t* y, const uint8_t* u, const uint8_t* v,
- uint8_t* dst) {
- int n;
- uint8_t tmp0[2 * 3 + 5 + 15];
- uint8_t* const tmp = (uint8_t*)((uintptr_t)(tmp0 + 15) & ~15); // align
- for (n = 0; n < 30; ++n) { // we directly stomp the *dst memory
- VP8YuvToRgbSSE2(y[n], u[n], v[n], dst + n * 3);
- }
- // Last two pixels are special: we write in a tmp buffer before sending
- // to dst.
- VP8YuvToRgbSSE2(y[n + 0], u[n + 0], v[n + 0], tmp + 0);
- VP8YuvToRgbSSE2(y[n + 1], u[n + 1], v[n + 1], tmp + 3);
- memcpy(dst + n * 3, tmp, 2 * 3);
-}
-
-void VP8YuvToBgr32(const uint8_t* y, const uint8_t* u, const uint8_t* v,
- uint8_t* dst) {
- int n;
- uint8_t tmp0[2 * 3 + 5 + 15];
- uint8_t* const tmp = (uint8_t*)((uintptr_t)(tmp0 + 15) & ~15); // align
- for (n = 0; n < 30; ++n) {
- VP8YuvToBgrSSE2(y[n], u[n], v[n], dst + n * 3);
+//-----------------------------------------------------------------------------
+// Main call
+
+WebPSamplerRowFunc WebPSamplers[MODE_LAST];
+
+extern void WebPInitSamplersSSE2(void);
+extern void WebPInitSamplersMIPS32(void);
+
+void WebPInitSamplers(void) {
+ WebPSamplers[MODE_RGB] = YuvToRgbRow;
+ WebPSamplers[MODE_RGBA] = YuvToRgbaRow;
+ WebPSamplers[MODE_BGR] = YuvToBgrRow;
+ WebPSamplers[MODE_BGRA] = YuvToBgraRow;
+ WebPSamplers[MODE_ARGB] = YuvToArgbRow;
+ WebPSamplers[MODE_RGBA_4444] = YuvToRgba4444Row;
+ WebPSamplers[MODE_RGB_565] = YuvToRgb565Row;
+ WebPSamplers[MODE_rgbA] = YuvToRgbaRow;
+ WebPSamplers[MODE_bgrA] = YuvToBgraRow;
+ WebPSamplers[MODE_Argb] = YuvToArgbRow;
+ WebPSamplers[MODE_rgbA_4444] = YuvToRgba4444Row;
+
+ // If defined, use CPUInfo() to overwrite some pointers with faster versions.
+ if (VP8GetCPUInfo != NULL) {
+#if defined(WEBP_USE_SSE2)
+ if (VP8GetCPUInfo(kSSE2)) {
+ WebPInitSamplersSSE2();
+ }
+#endif // WEBP_USE_SSE2
+#if defined(WEBP_USE_MIPS32)
+ if (VP8GetCPUInfo(kMIPS32)) {
+ WebPInitSamplersMIPS32();
+ }
+#endif // WEBP_USE_MIPS32
}
- VP8YuvToBgrSSE2(y[n + 0], u[n + 0], v[n + 0], tmp + 0);
- VP8YuvToBgrSSE2(y[n + 1], u[n + 1], v[n + 1], tmp + 3);
- memcpy(dst + n * 3, tmp, 2 * 3);
}
-#else
-
-void VP8YUVInitSSE2(void) {}
-
-#endif // FANCY_UPSAMPLING
-
-#endif // WEBP_USE_SSE2
-
+//-----------------------------------------------------------------------------
projects / platform / framework / web / crosswalk.git / blobdiff