mirror of
https://github.com/webmproject/libwebp.git
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add SSE2 functions. ~2x faster encoding on average.
For now, SSE2 functions are compiled a-minima: only on platforms where __SSE2__ is defined. Let's later add some autoconf-based config to enable/disable at will. One can disable SSE2 at run-time by hooking-up VP8GetInfo. There is a new option "-noasm" in cwebp for that. Output should be binary the same between C and SSE2 version. If not, that's a bug! patch by Christian Duvivier (cduvivier at google dot com) Change-Id: Iae006c3cdcb7e8280e846cedb94d239dab1e42ae
This commit is contained in:
Pascal Massimino
parent
e7ff3f9af6
commit
cfbf88a6c4
@ -37,6 +37,8 @@
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#include "webp/encode.h"
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#include "stopwatch.h"
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extern void* VP8GetCPUInfo;
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//-----------------------------------------------------------------------------
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static int verbose = 0;
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@ -596,6 +598,7 @@ static void HelpLong(void) {
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printf(" -short ................. condense printed message\n");
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printf(" -quiet ................. don't print anything.\n");
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printf(" -version ............... print version number and exit.\n");
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printf(" -noasm ................. disable all assembly optimizations.\n");
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printf(" -v ..................... verbose, e.g. print encoding/decoding "
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"times\n");
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printf("\n");
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@ -680,6 +683,8 @@ int main(int argc, const char *argv[]) {
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crop_y = strtol(argv[++c], NULL, 0);
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crop_w = strtol(argv[++c], NULL, 0);
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crop_h = strtol(argv[++c], NULL, 0);
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} else if (!strcmp(argv[c], "-noasm")) {
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VP8GetCPUInfo = NULL;
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} else if (!strcmp(argv[c], "-version")) {
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const int version = WebPGetEncoderVersion();
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printf("%d.%d.%d\n",
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@ -46,7 +46,8 @@ CFLAGS = -O3 -DNDEBUG $(EXTRA_FLAGS)
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LDFLAGS = src/libwebp.a $(EXTRA_LIBS) -lm
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OBJS = src/enc/webpenc.o src/enc/bit_writer.o src/enc/syntax.o \
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src/enc/dsp.o src/enc/tree.o src/enc/config.o src/enc/frame.o \
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src/enc/dsp.o src/enc/dsp_sse2.o \
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src/enc/tree.o src/enc/config.o src/enc/frame.o \
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src/enc/quant.o src/enc/iterator.o src/enc/analysis.o \
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src/enc/cost.o src/enc/picture.o src/enc/filter.o \
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src/dec/bits.o src/dec/dsp.o src/dec/frame.o src/dec/webp.o \
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@ -118,6 +118,9 @@ range from 1 to 6. This is only meant to help debugging.
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Specify a pre-processing filter. This option is a placeholder
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and has currently no effect.
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.TP
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.B \-noasm
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Disable all assembly optimizations.
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.TP
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.B \-v
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Print extra information (encoding time in particular).
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.TP
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@ -1,7 +1,7 @@
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AM_CPPFLAGS = -I$(top_srcdir)/src
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libwebpencode_la_SOURCES = analysis.c bit_writer.c bit_writer.h \
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config.c cost.c cost.h dsp.c filter.c \
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config.c cost.c cost.h dsp.c dsp_sse2.c filter.c \
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frame.c iterator.c picture.c quant.c \
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syntax.c tree.c vp8enci.h webpenc.c
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libwebpencode_la_LDFLAGS = -version-info 0:0:0 -lm
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118
src/enc/dsp.c
118
src/enc/dsp.c
@ -174,12 +174,6 @@ static void FTransformWHT(const int16_t* in, int16_t* out) {
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}
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}
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// default C implementations:
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VP8Idct VP8ITransform = ITransform;
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VP8Fdct VP8FTransform = FTransform;
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VP8WHT VP8ITransformWHT = ITransformWHT;
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VP8WHT VP8FTransformWHT = FTransformWHT;
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#undef MUL
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#undef STORE
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@ -486,11 +480,6 @@ static void Intra4Preds(uint8_t* dst, const uint8_t* top) {
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HU4(I4HU4 + dst, top);
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}
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// default C implementations
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VP8Intra4Preds VP8EncPredLuma4 = Intra4Preds;
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VP8IntraPreds VP8EncPredLuma16 = Intra16Preds;
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VP8IntraPreds VP8EncPredChroma8 = IntraChromaPreds;
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//-----------------------------------------------------------------------------
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// Metric
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@ -521,12 +510,6 @@ static int SSE4x4(const uint8_t* a, const uint8_t* b) {
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return GetSSE(a, b, 4, 4);
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}
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// default C implementations
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VP8Metric VP8SSE16x16 = SSE16x16;
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VP8Metric VP8SSE8x8 = SSE8x8;
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VP8Metric VP8SSE16x8 = SSE16x8;
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VP8Metric VP8SSE4x4 = SSE4x4;
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//-----------------------------------------------------------------------------
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// Texture distortion
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//
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@ -588,9 +571,6 @@ static int Disto16x16(const uint8_t* const a, const uint8_t* const b,
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return D;
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}
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VP8WMetric VP8TDisto4x4 = Disto4x4;
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VP8WMetric VP8TDisto16x16 = Disto16x16;
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//-----------------------------------------------------------------------------
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// Quantization
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//
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@ -620,9 +600,6 @@ static int QuantizeBlock(int16_t in[16], int16_t out[16],
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return (last >= 0);
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}
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// default C implementation
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VP8QuantizeBlock VP8EncQuantizeBlock = QuantizeBlock;
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//-----------------------------------------------------------------------------
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// Block copy
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@ -639,15 +616,100 @@ static void Copy4x4(const uint8_t* src, uint8_t* dst) { Copy(src, dst, 4); }
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static void Copy8x8(const uint8_t* src, uint8_t* dst) { Copy(src, dst, 8); }
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static void Copy16x16(const uint8_t* src, uint8_t* dst) { Copy(src, dst, 16); }
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// default C implementations
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VP8BlockCopy VP8Copy4x4 = Copy4x4;
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VP8BlockCopy VP8Copy8x8 = Copy8x8;
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VP8BlockCopy VP8Copy16x16 = Copy16x16;
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//-----------------------------------------------------------------------------
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// SSE2 detection.
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//
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#if defined(__pic__) && defined(__i386__)
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static inline void GetCPUInfo(int cpu_info[4], int info_type) {
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__asm__ volatile (
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"mov %%ebx, %%edi\n"
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"cpuid\n"
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"xchg %%edi, %%ebx\n"
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: "=a"(cpu_info[0]), "=D"(cpu_info[1]), "=c"(cpu_info[2]), "=d"(cpu_info[3])
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: "a"(info_type));
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}
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#elif defined(__i386__) || defined(__x86_64__)
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static inline void GetCPUInfo(int cpu_info[4], int info_type) {
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__asm__ volatile (
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"cpuid\n"
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: "=a"(cpu_info[0]), "=b"(cpu_info[1]), "=c"(cpu_info[2]), "=d"(cpu_info[3])
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: "a"(info_type));
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}
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#endif
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#if defined(__i386__) || defined(__x86_64__)
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static int x86CPUInfo(CPUFeature feature) {
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int cpu_info[4];
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GetCPUInfo(cpu_info, 1);
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if (feature == kSSE2) {
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return 0 != (cpu_info[3] & 0x04000000);
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}
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if (feature == kSSE3) {
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return 0 != (cpu_info[2] & 0x00000001);
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}
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return 0;
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}
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VP8CPUInfo VP8GetCPUInfo = x86CPUInfo;
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#else
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VP8CPUInfo VP8GetCPUInfo = NULL;
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#endif
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// Speed-critical function pointers. We have to initialize them to the default
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// implementations within VP8EncDspInit().
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VP8Idct VP8ITransform;
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VP8Fdct VP8FTransform;
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VP8WHT VP8ITransformWHT;
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VP8WHT VP8FTransformWHT;
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VP8Intra4Preds VP8EncPredLuma4;
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VP8IntraPreds VP8EncPredLuma16;
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VP8IntraPreds VP8EncPredChroma8;
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VP8Metric VP8SSE16x16;
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VP8Metric VP8SSE8x8;
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VP8Metric VP8SSE16x8;
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VP8Metric VP8SSE4x4;
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VP8WMetric VP8TDisto4x4;
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VP8WMetric VP8TDisto16x16;
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VP8QuantizeBlock VP8EncQuantizeBlock;
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VP8BlockCopy VP8Copy4x4;
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VP8BlockCopy VP8Copy8x8;
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VP8BlockCopy VP8Copy16x16;
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extern void VP8EncDspInitSSE2(void);
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void VP8EncDspInit(void) {
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InitTables();
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// default C implementations
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VP8ITransform = ITransform;
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VP8FTransform = FTransform;
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VP8ITransformWHT = ITransformWHT;
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VP8FTransformWHT = FTransformWHT;
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VP8EncPredLuma4 = Intra4Preds;
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VP8EncPredLuma16 = Intra16Preds;
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VP8EncPredChroma8 = IntraChromaPreds;
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VP8SSE16x16 = SSE16x16;
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VP8SSE8x8 = SSE8x8;
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VP8SSE16x8 = SSE16x8;
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VP8SSE4x4 = SSE4x4;
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VP8TDisto4x4 = Disto4x4;
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VP8TDisto16x16 = Disto16x16;
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VP8EncQuantizeBlock = QuantizeBlock;
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VP8Copy4x4 = Copy4x4;
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VP8Copy8x8 = Copy8x8;
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VP8Copy16x16 = Copy16x16;
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// If defined, use CPUInfo() to overwrite some pointers with faster versions.
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if (VP8GetCPUInfo) {
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if (VP8GetCPUInfo(kSSE2)) {
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#if defined(__SSE2__)
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VP8EncDspInitSSE2();
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#endif
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}
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if (VP8GetCPUInfo(kSSE3)) {
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// later we'll plug some SSE3 variant here
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}
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}
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}
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#if defined(__cplusplus) || defined(c_plusplus)
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578
src/enc/dsp_sse2.c
Normal file
578
src/enc/dsp_sse2.c
Normal file
@ -0,0 +1,578 @@
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// Copyright 2011 Google Inc.
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//
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// This code is licensed under the same terms as WebM:
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// Software License Agreement: http://www.webmproject.org/license/software/
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// Additional IP Rights Grant: http://www.webmproject.org/license/additional/
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// -----------------------------------------------------------------------------
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//
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// SSE2 version of speed-critical functions.
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//
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// Author: Christian Duvivier (cduvivier@google.com)
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#if defined(__SSE2__)
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#include <emmintrin.h>
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#include "vp8enci.h"
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#if defined(__cplusplus) || defined(c_plusplus)
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extern "C" {
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#endif
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//-----------------------------------------------------------------------------
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// Transforms (Paragraph 14.4)
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// Does one of two inverse transforms.
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static void ITransformSSE2(const uint8_t* ref, const int16_t* in, uint8_t* dst,
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int do_two) {
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// This implementation makes use of 16-bit fixed point versions of two
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// multiply constants:
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// K1 = sqrt(2) * cos (pi/8) ~= 85627 / 2^16
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// K2 = sqrt(2) * sin (pi/8) ~= 35468 / 2^16
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//
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// To be able to use signed 16-bit integers, we use the following trick to
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// have constants within range:
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// - Associated constants are obtained by subtracting the 16-bit fixed point
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// version of one:
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// k = K - (1 << 16) => K = k + (1 << 16)
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// K1 = 85267 => k1 = 20091
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// K2 = 35468 => k2 = -30068
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// - The multiplication of a variable by a constant become the sum of the
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// variable and the multiplication of that variable by the associated
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// constant:
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// (x * K) >> 16 = (x * (k + (1 << 16))) >> 16 = ((x * k ) >> 16) + x
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const __m128i k1 = _mm_set1_epi16(20091);
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const __m128i k2 = _mm_set1_epi16(-30068);
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__m128i T0, T1, T2, T3;
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// Load and concatenate the transform coefficients (we'll do two inverse
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// transforms in parallel). In the case of only one inverse transform, the
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// second half of the vectors will just contain random value we'll never
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// use nor store.
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__m128i in0, in1, in2, in3;
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{
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in0 = _mm_loadl_epi64((__m128i *)&in[0]);
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in1 = _mm_loadl_epi64((__m128i *)&in[4]);
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in2 = _mm_loadl_epi64((__m128i *)&in[8]);
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in3 = _mm_loadl_epi64((__m128i *)&in[12]);
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// a00 a10 a20 a30 x x x x
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// a01 a11 a21 a31 x x x x
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// a02 a12 a22 a32 x x x x
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// a03 a13 a23 a33 x x x x
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if (do_two) {
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const __m128i inB0 = _mm_loadl_epi64((__m128i *)&in[16]);
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const __m128i inB1 = _mm_loadl_epi64((__m128i *)&in[20]);
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const __m128i inB2 = _mm_loadl_epi64((__m128i *)&in[24]);
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const __m128i inB3 = _mm_loadl_epi64((__m128i *)&in[28]);
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in0 = _mm_unpacklo_epi64(in0, inB0);
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in1 = _mm_unpacklo_epi64(in1, inB1);
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in2 = _mm_unpacklo_epi64(in2, inB2);
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in3 = _mm_unpacklo_epi64(in3, inB3);
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// a00 a10 a20 a30 b00 b10 b20 b30
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// a01 a11 a21 a31 b01 b11 b21 b31
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// a02 a12 a22 a32 b02 b12 b22 b32
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// a03 a13 a23 a33 b03 b13 b23 b33
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}
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}
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// Vertical pass and subsequent transpose.
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{
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// First pass, c and d calculations are longer because of the "trick"
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// multiplications.
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const __m128i a = _mm_add_epi16(in0, in2);
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const __m128i b = _mm_sub_epi16(in0, in2);
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// c = MUL(in1, K2) - MUL(in3, K1) = MUL(in1, k2) - MUL(in3, k1) + in1 - in3
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const __m128i c1 = _mm_mulhi_epi16(in1, k2);
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const __m128i c2 = _mm_mulhi_epi16(in3, k1);
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const __m128i c3 = _mm_sub_epi16(in1, in3);
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const __m128i c4 = _mm_sub_epi16(c1, c2);
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const __m128i c = _mm_add_epi16(c3, c4);
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// d = MUL(in1, K1) + MUL(in3, K2) = MUL(in1, k1) + MUL(in3, k2) + in1 + in3
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const __m128i d1 = _mm_mulhi_epi16(in1, k1);
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const __m128i d2 = _mm_mulhi_epi16(in3, k2);
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const __m128i d3 = _mm_add_epi16(in1, in3);
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const __m128i d4 = _mm_add_epi16(d1, d2);
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const __m128i d = _mm_add_epi16(d3, d4);
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// Second pass.
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const __m128i tmp0 = _mm_add_epi16(a, d);
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const __m128i tmp1 = _mm_add_epi16(b, c);
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const __m128i tmp2 = _mm_sub_epi16(b, c);
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const __m128i tmp3 = _mm_sub_epi16(a, d);
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// Transpose the two 4x4.
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// a00 a01 a02 a03 b00 b01 b02 b03
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// a10 a11 a12 a13 b10 b11 b12 b13
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// a20 a21 a22 a23 b20 b21 b22 b23
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// a30 a31 a32 a33 b30 b31 b32 b33
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const __m128i transpose0_0 = _mm_unpacklo_epi16(tmp0, tmp1);
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const __m128i transpose0_1 = _mm_unpacklo_epi16(tmp2, tmp3);
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const __m128i transpose0_2 = _mm_unpackhi_epi16(tmp0, tmp1);
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const __m128i transpose0_3 = _mm_unpackhi_epi16(tmp2, tmp3);
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// a00 a10 a01 a11 a02 a12 a03 a13
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// a20 a30 a21 a31 a22 a32 a23 a33
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// b00 b10 b01 b11 b02 b12 b03 b13
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// b20 b30 b21 b31 b22 b32 b23 b33
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const __m128i transpose1_0 = _mm_unpacklo_epi32(transpose0_0, transpose0_1);
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const __m128i transpose1_1 = _mm_unpacklo_epi32(transpose0_2, transpose0_3);
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const __m128i transpose1_2 = _mm_unpackhi_epi32(transpose0_0, transpose0_1);
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const __m128i transpose1_3 = _mm_unpackhi_epi32(transpose0_2, transpose0_3);
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// a00 a10 a20 a30 a01 a11 a21 a31
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// b00 b10 b20 b30 b01 b11 b21 b31
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// a02 a12 a22 a32 a03 a13 a23 a33
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// b02 b12 a22 b32 b03 b13 b23 b33
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T0 = _mm_unpacklo_epi64(transpose1_0, transpose1_1);
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T1 = _mm_unpackhi_epi64(transpose1_0, transpose1_1);
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T2 = _mm_unpacklo_epi64(transpose1_2, transpose1_3);
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T3 = _mm_unpackhi_epi64(transpose1_2, transpose1_3);
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// a00 a10 a20 a30 b00 b10 b20 b30
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// a01 a11 a21 a31 b01 b11 b21 b31
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// a02 a12 a22 a32 b02 b12 b22 b32
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// a03 a13 a23 a33 b03 b13 b23 b33
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}
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// Horizontal pass and subsequent transpose.
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{
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// First pass, c and d calculations are longer because of the "trick"
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// multiplications.
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const __m128i four = _mm_set1_epi16(4);
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const __m128i dc = _mm_add_epi16(T0, four);
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const __m128i a = _mm_add_epi16(dc, T2);
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const __m128i b = _mm_sub_epi16(dc, T2);
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// c = MUL(T1, K2) - MUL(T3, K1) = MUL(T1, k2) - MUL(T3, k1) + T1 - T3
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const __m128i c1 = _mm_mulhi_epi16(T1, k2);
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const __m128i c2 = _mm_mulhi_epi16(T3, k1);
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const __m128i c3 = _mm_sub_epi16(T1, T3);
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const __m128i c4 = _mm_sub_epi16(c1, c2);
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const __m128i c = _mm_add_epi16(c3, c4);
|
||||
// d = MUL(T1, K1) + MUL(T3, K2) = MUL(T1, k1) + MUL(T3, k2) + T1 + T3
|
||||
const __m128i d1 = _mm_mulhi_epi16(T1, k1);
|
||||
const __m128i d2 = _mm_mulhi_epi16(T3, k2);
|
||||
const __m128i d3 = _mm_add_epi16(T1, T3);
|
||||
const __m128i d4 = _mm_add_epi16(d1, d2);
|
||||
const __m128i d = _mm_add_epi16(d3, d4);
|
||||
|
||||
// Second pass.
|
||||
const __m128i tmp0 = _mm_add_epi16(a, d);
|
||||
const __m128i tmp1 = _mm_add_epi16(b, c);
|
||||
const __m128i tmp2 = _mm_sub_epi16(b, c);
|
||||
const __m128i tmp3 = _mm_sub_epi16(a, d);
|
||||
const __m128i shifted0 = _mm_srai_epi16(tmp0, 3);
|
||||
const __m128i shifted1 = _mm_srai_epi16(tmp1, 3);
|
||||
const __m128i shifted2 = _mm_srai_epi16(tmp2, 3);
|
||||
const __m128i shifted3 = _mm_srai_epi16(tmp3, 3);
|
||||
|
||||
// Transpose the two 4x4.
|
||||
// a00 a01 a02 a03 b00 b01 b02 b03
|
||||
// a10 a11 a12 a13 b10 b11 b12 b13
|
||||
// a20 a21 a22 a23 b20 b21 b22 b23
|
||||
// a30 a31 a32 a33 b30 b31 b32 b33
|
||||
const __m128i transpose0_0 = _mm_unpacklo_epi16(shifted0, shifted1);
|
||||
const __m128i transpose0_1 = _mm_unpacklo_epi16(shifted2, shifted3);
|
||||
const __m128i transpose0_2 = _mm_unpackhi_epi16(shifted0, shifted1);
|
||||
const __m128i transpose0_3 = _mm_unpackhi_epi16(shifted2, shifted3);
|
||||
// a00 a10 a01 a11 a02 a12 a03 a13
|
||||
// a20 a30 a21 a31 a22 a32 a23 a33
|
||||
// b00 b10 b01 b11 b02 b12 b03 b13
|
||||
// b20 b30 b21 b31 b22 b32 b23 b33
|
||||
const __m128i transpose1_0 = _mm_unpacklo_epi32(transpose0_0, transpose0_1);
|
||||
const __m128i transpose1_1 = _mm_unpacklo_epi32(transpose0_2, transpose0_3);
|
||||
const __m128i transpose1_2 = _mm_unpackhi_epi32(transpose0_0, transpose0_1);
|
||||
const __m128i transpose1_3 = _mm_unpackhi_epi32(transpose0_2, transpose0_3);
|
||||
// a00 a10 a20 a30 a01 a11 a21 a31
|
||||
// b00 b10 b20 b30 b01 b11 b21 b31
|
||||
// a02 a12 a22 a32 a03 a13 a23 a33
|
||||
// b02 b12 a22 b32 b03 b13 b23 b33
|
||||
T0 = _mm_unpacklo_epi64(transpose1_0, transpose1_1);
|
||||
T1 = _mm_unpackhi_epi64(transpose1_0, transpose1_1);
|
||||
T2 = _mm_unpacklo_epi64(transpose1_2, transpose1_3);
|
||||
T3 = _mm_unpackhi_epi64(transpose1_2, transpose1_3);
|
||||
// a00 a10 a20 a30 b00 b10 b20 b30
|
||||
// a01 a11 a21 a31 b01 b11 b21 b31
|
||||
// a02 a12 a22 a32 b02 b12 b22 b32
|
||||
// a03 a13 a23 a33 b03 b13 b23 b33
|
||||
}
|
||||
|
||||
// Add inverse transform to 'ref' and store.
|
||||
{
|
||||
const __m128i zero = _mm_set1_epi16(0);
|
||||
// Load the reference(s).
|
||||
__m128i ref0 = _mm_loadl_epi64((__m128i *)&ref[0 * BPS]);
|
||||
__m128i ref1 = _mm_loadl_epi64((__m128i *)&ref[1 * BPS]);
|
||||
__m128i ref2 = _mm_loadl_epi64((__m128i *)&ref[2 * BPS]);
|
||||
__m128i ref3 = _mm_loadl_epi64((__m128i *)&ref[3 * BPS]);
|
||||
// Convert to 16b.
|
||||
ref0 = _mm_unpacklo_epi8(ref0, zero);
|
||||
ref1 = _mm_unpacklo_epi8(ref1, zero);
|
||||
ref2 = _mm_unpacklo_epi8(ref2, zero);
|
||||
ref3 = _mm_unpacklo_epi8(ref3, zero);
|
||||
// Add the inverse transform(s).
|
||||
ref0 = _mm_add_epi16(ref0, T0);
|
||||
ref1 = _mm_add_epi16(ref1, T1);
|
||||
ref2 = _mm_add_epi16(ref2, T2);
|
||||
ref3 = _mm_add_epi16(ref3, T3);
|
||||
// Unsigned saturate to 8b.
|
||||
ref0 = _mm_packus_epi16(ref0, ref0);
|
||||
ref1 = _mm_packus_epi16(ref1, ref1);
|
||||
ref2 = _mm_packus_epi16(ref2, ref2);
|
||||
ref3 = _mm_packus_epi16(ref3, ref3);
|
||||
// Store the results.
|
||||
if (do_two) {
|
||||
// Store eight bytes/pixels per line.
|
||||
_mm_storel_epi64((__m128i *)&dst[0 * BPS], ref0);
|
||||
_mm_storel_epi64((__m128i *)&dst[1 * BPS], ref1);
|
||||
_mm_storel_epi64((__m128i *)&dst[2 * BPS], ref2);
|
||||
_mm_storel_epi64((__m128i *)&dst[3 * BPS], ref3);
|
||||
} else {
|
||||
// Store four bytes/pixels per line.
|
||||
*((int32_t *)&dst[0 * BPS]) = _mm_cvtsi128_si32(ref0);
|
||||
*((int32_t *)&dst[1 * BPS]) = _mm_cvtsi128_si32(ref1);
|
||||
*((int32_t *)&dst[2 * BPS]) = _mm_cvtsi128_si32(ref2);
|
||||
*((int32_t *)&dst[3 * BPS]) = _mm_cvtsi128_si32(ref3);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
//-----------------------------------------------------------------------------
|
||||
// Texture distortion
|
||||
//
|
||||
// We try to match the spectral content (weighted) between source and
|
||||
// reconstructed samples.
|
||||
|
||||
// Hadamard transform
|
||||
// Returns the difference between the weighted sum of the absolute value of
|
||||
// transformed coefficients.
|
||||
static int TTransformSSE2(const uint8_t* inA, const uint8_t* inB,
|
||||
const uint16_t* const w) {
|
||||
int32_t sum[4];
|
||||
__m128i tmp_0, tmp_1, tmp_2, tmp_3;
|
||||
const __m128i zero = _mm_setzero_si128();
|
||||
const __m128i one = _mm_set1_epi16(1);
|
||||
const __m128i three = _mm_set1_epi16(3);
|
||||
|
||||
// Load, combine and tranpose inputs.
|
||||
{
|
||||
const __m128i inA_0 = _mm_loadl_epi64((__m128i *)&inA[BPS * 0]);
|
||||
const __m128i inA_1 = _mm_loadl_epi64((__m128i *)&inA[BPS * 1]);
|
||||
const __m128i inA_2 = _mm_loadl_epi64((__m128i *)&inA[BPS * 2]);
|
||||
const __m128i inA_3 = _mm_loadl_epi64((__m128i *)&inA[BPS * 3]);
|
||||
const __m128i inB_0 = _mm_loadl_epi64((__m128i *)&inB[BPS * 0]);
|
||||
const __m128i inB_1 = _mm_loadl_epi64((__m128i *)&inB[BPS * 1]);
|
||||
const __m128i inB_2 = _mm_loadl_epi64((__m128i *)&inB[BPS * 2]);
|
||||
const __m128i inB_3 = _mm_loadl_epi64((__m128i *)&inB[BPS * 3]);
|
||||
|
||||
// Combine inA and inB (we'll do two transforms in parallel).
|
||||
const __m128i inAB_0 = _mm_unpacklo_epi8(inA_0, inB_0);
|
||||
const __m128i inAB_1 = _mm_unpacklo_epi8(inA_1, inB_1);
|
||||
const __m128i inAB_2 = _mm_unpacklo_epi8(inA_2, inB_2);
|
||||
const __m128i inAB_3 = _mm_unpacklo_epi8(inA_3, inB_3);
|
||||
// a00 b00 a01 b01 a02 b03 a03 b03 0 0 0 0 0 0 0 0
|
||||
// a10 b10 a11 b11 a12 b12 a13 b13 0 0 0 0 0 0 0 0
|
||||
// a20 b20 a21 b21 a22 b22 a23 b23 0 0 0 0 0 0 0 0
|
||||
// a30 b30 a31 b31 a32 b32 a33 b33 0 0 0 0 0 0 0 0
|
||||
|
||||
// Transpose the two 4x4, discarding the filling zeroes.
|
||||
const __m128i transpose0_0 = _mm_unpacklo_epi8(inAB_0, inAB_2);
|
||||
const __m128i transpose0_1 = _mm_unpacklo_epi8(inAB_1, inAB_3);
|
||||
// a00 a20 b00 b20 a01 a21 b01 b21 a02 a22 b02 b22 a03 a23 b03 b23
|
||||
// a10 a30 b10 b30 a11 a31 b11 b31 a12 a32 b12 b32 a13 a33 b13 b33
|
||||
const __m128i transpose1_0 = _mm_unpacklo_epi8(transpose0_0, transpose0_1);
|
||||
const __m128i transpose1_1 = _mm_unpackhi_epi8(transpose0_0, transpose0_1);
|
||||
// a00 a10 a20 a30 b00 b10 b20 b30 a01 a11 a21 a31 b01 b11 b21 b31
|
||||
// a02 a12 a22 a32 b02 b12 b22 b32 a03 a13 a23 a33 b03 b13 b23 b33
|
||||
|
||||
// Convert to 16b.
|
||||
tmp_0 = _mm_unpacklo_epi8(transpose1_0, zero);
|
||||
tmp_1 = _mm_unpackhi_epi8(transpose1_0, zero);
|
||||
tmp_2 = _mm_unpacklo_epi8(transpose1_1, zero);
|
||||
tmp_3 = _mm_unpackhi_epi8(transpose1_1, zero);
|
||||
// a00 a10 a20 a30 b00 b10 b20 b30
|
||||
// a01 a11 a21 a31 b01 b11 b21 b31
|
||||
// a02 a12 a22 a32 b02 b12 b22 b32
|
||||
// a03 a13 a23 a33 b03 b13 b23 b33
|
||||
}
|
||||
|
||||
// Horizontal pass and subsequent transpose.
|
||||
{
|
||||
// Calculate a and b (two 4x4 at once).
|
||||
const __m128i a0 = _mm_slli_epi16(_mm_add_epi16(tmp_0, tmp_2), 2);
|
||||
const __m128i a1 = _mm_slli_epi16(_mm_add_epi16(tmp_1, tmp_3), 2);
|
||||
const __m128i a2 = _mm_slli_epi16(_mm_sub_epi16(tmp_1, tmp_3), 2);
|
||||
const __m128i a3 = _mm_slli_epi16(_mm_sub_epi16(tmp_0, tmp_2), 2);
|
||||
// b0_extra = (a0 != 0);
|
||||
const __m128i b0_extra = _mm_andnot_si128(_mm_cmpeq_epi16 (a0, zero), one);
|
||||
const __m128i b0_base = _mm_add_epi16(a0, a1);
|
||||
const __m128i b1 = _mm_add_epi16(a3, a2);
|
||||
const __m128i b2 = _mm_sub_epi16(a3, a2);
|
||||
const __m128i b3 = _mm_sub_epi16(a0, a1);
|
||||
const __m128i b0 = _mm_add_epi16(b0_base, b0_extra);
|
||||
// a00 a01 a02 a03 b00 b01 b02 b03
|
||||
// a10 a11 a12 a13 b10 b11 b12 b13
|
||||
// a20 a21 a22 a23 b20 b21 b22 b23
|
||||
// a30 a31 a32 a33 b30 b31 b32 b33
|
||||
|
||||
// Transpose the two 4x4.
|
||||
const __m128i transpose0_0 = _mm_unpacklo_epi16(b0, b1);
|
||||
const __m128i transpose0_1 = _mm_unpacklo_epi16(b2, b3);
|
||||
const __m128i transpose0_2 = _mm_unpackhi_epi16(b0, b1);
|
||||
const __m128i transpose0_3 = _mm_unpackhi_epi16(b2, b3);
|
||||
// a00 a10 a01 a11 a02 a12 a03 a13
|
||||
// a20 a30 a21 a31 a22 a32 a23 a33
|
||||
// b00 b10 b01 b11 b02 b12 b03 b13
|
||||
// b20 b30 b21 b31 b22 b32 b23 b33
|
||||
const __m128i transpose1_0 = _mm_unpacklo_epi32(transpose0_0, transpose0_1);
|
||||
const __m128i transpose1_1 = _mm_unpacklo_epi32(transpose0_2, transpose0_3);
|
||||
const __m128i transpose1_2 = _mm_unpackhi_epi32(transpose0_0, transpose0_1);
|
||||
const __m128i transpose1_3 = _mm_unpackhi_epi32(transpose0_2, transpose0_3);
|
||||
// a00 a10 a20 a30 a01 a11 a21 a31
|
||||
// b00 b10 b20 b30 b01 b11 b21 b31
|
||||
// a02 a12 a22 a32 a03 a13 a23 a33
|
||||
// b02 b12 a22 b32 b03 b13 b23 b33
|
||||
tmp_0 = _mm_unpacklo_epi64(transpose1_0, transpose1_1);
|
||||
tmp_1 = _mm_unpackhi_epi64(transpose1_0, transpose1_1);
|
||||
tmp_2 = _mm_unpacklo_epi64(transpose1_2, transpose1_3);
|
||||
tmp_3 = _mm_unpackhi_epi64(transpose1_2, transpose1_3);
|
||||
// a00 a10 a20 a30 b00 b10 b20 b30
|
||||
// a01 a11 a21 a31 b01 b11 b21 b31
|
||||
// a02 a12 a22 a32 b02 b12 b22 b32
|
||||
// a03 a13 a23 a33 b03 b13 b23 b33
|
||||
}
|
||||
|
||||
// Vertical pass and difference of weighted sums.
|
||||
{
|
||||
// Load all inputs.
|
||||
// TODO(cduvivier): Make variable declarations and allocations aligned so
|
||||
// we can use _mm_load_si128 instead of _mm_loadu_si128.
|
||||
const __m128i w_0 = _mm_loadu_si128((__m128i *)&w[0]);
|
||||
const __m128i w_8 = _mm_loadu_si128((__m128i *)&w[8]);
|
||||
|
||||
// Calculate a and b (two 4x4 at once).
|
||||
const __m128i a0 = _mm_add_epi16(tmp_0, tmp_2);
|
||||
const __m128i a1 = _mm_add_epi16(tmp_1, tmp_3);
|
||||
const __m128i a2 = _mm_sub_epi16(tmp_1, tmp_3);
|
||||
const __m128i a3 = _mm_sub_epi16(tmp_0, tmp_2);
|
||||
const __m128i b0 = _mm_add_epi16(a0, a1);
|
||||
const __m128i b1 = _mm_add_epi16(a3, a2);
|
||||
const __m128i b2 = _mm_sub_epi16(a3, a2);
|
||||
const __m128i b3 = _mm_sub_epi16(a0, a1);
|
||||
|
||||
// Separate the transforms of inA and inB.
|
||||
__m128i A_b0 = _mm_unpacklo_epi64(b0, b1);
|
||||
__m128i A_b2 = _mm_unpacklo_epi64(b2, b3);
|
||||
__m128i B_b0 = _mm_unpackhi_epi64(b0, b1);
|
||||
__m128i B_b2 = _mm_unpackhi_epi64(b2, b3);
|
||||
|
||||
{
|
||||
// sign(b) = b >> 15 (0x0000 if positive, 0xffff if negative)
|
||||
const __m128i sign_A_b0 = _mm_srai_epi16(A_b0, 15);
|
||||
const __m128i sign_A_b2 = _mm_srai_epi16(A_b2, 15);
|
||||
const __m128i sign_B_b0 = _mm_srai_epi16(B_b0, 15);
|
||||
const __m128i sign_B_b2 = _mm_srai_epi16(B_b2, 15);
|
||||
|
||||
// b = abs(b) = (b ^ sign) - sign
|
||||
A_b0 = _mm_xor_si128(A_b0, sign_A_b0);
|
||||
A_b2 = _mm_xor_si128(A_b2, sign_A_b2);
|
||||
B_b0 = _mm_xor_si128(B_b0, sign_B_b0);
|
||||
B_b2 = _mm_xor_si128(B_b2, sign_B_b2);
|
||||
A_b0 = _mm_sub_epi16(A_b0, sign_A_b0);
|
||||
A_b2 = _mm_sub_epi16(A_b2, sign_A_b2);
|
||||
B_b0 = _mm_sub_epi16(B_b0, sign_B_b0);
|
||||
B_b2 = _mm_sub_epi16(B_b2, sign_B_b2);
|
||||
}
|
||||
|
||||
// b = abs(b) + 3
|
||||
A_b0 = _mm_add_epi16(A_b0, three);
|
||||
A_b2 = _mm_add_epi16(A_b2, three);
|
||||
B_b0 = _mm_add_epi16(B_b0, three);
|
||||
B_b2 = _mm_add_epi16(B_b2, three);
|
||||
|
||||
// abs((b + (b<0) + 3) >> 3) = (abs(b) + 3) >> 3
|
||||
// b = (abs(b) + 3) >> 3
|
||||
A_b0 = _mm_srai_epi16(A_b0, 3);
|
||||
A_b2 = _mm_srai_epi16(A_b2, 3);
|
||||
B_b0 = _mm_srai_epi16(B_b0, 3);
|
||||
B_b2 = _mm_srai_epi16(B_b2, 3);
|
||||
|
||||
// weighted sums
|
||||
A_b0 = _mm_madd_epi16(A_b0, w_0);
|
||||
A_b2 = _mm_madd_epi16(A_b2, w_8);
|
||||
B_b0 = _mm_madd_epi16(B_b0, w_0);
|
||||
B_b2 = _mm_madd_epi16(B_b2, w_8);
|
||||
A_b0 = _mm_add_epi32(A_b0, A_b2);
|
||||
B_b0 = _mm_add_epi32(B_b0, B_b2);
|
||||
|
||||
// difference of weighted sums
|
||||
A_b0 = _mm_sub_epi32(A_b0, B_b0);
|
||||
_mm_storeu_si128((__m128i *)&sum[0], A_b0);
|
||||
}
|
||||
return sum[0] + sum[1] + sum[2] + sum[3];
|
||||
}
|
||||
|
||||
static int Disto4x4SSE2(const uint8_t* const a, const uint8_t* const b,
|
||||
const uint16_t* const w) {
|
||||
const int diff_sum = TTransformSSE2(a, b, w);
|
||||
return (abs(diff_sum) + 8) >> 4;
|
||||
}
|
||||
|
||||
static int Disto16x16SSE2(const uint8_t* const a, const uint8_t* const b,
|
||||
const uint16_t* const w) {
|
||||
int D = 0;
|
||||
int x, y;
|
||||
for (y = 0; y < 16 * BPS; y += 4 * BPS) {
|
||||
for (x = 0; x < 16; x += 4) {
|
||||
D += Disto4x4SSE2(a + x + y, b + x + y, w);
|
||||
}
|
||||
}
|
||||
return D;
|
||||
}
|
||||
|
||||
|
||||
//-----------------------------------------------------------------------------
|
||||
// Quantization
|
||||
//
|
||||
|
||||
// Simple quantization
|
||||
static int QuantizeBlockSSE2(int16_t in[16], int16_t out[16],
|
||||
int n, const VP8Matrix* const mtx) {
|
||||
const __m128i max_coeff_2047 = _mm_set1_epi16(2047);
|
||||
const __m128i zero = _mm_set1_epi16(0);
|
||||
__m128i sign0, sign8;
|
||||
__m128i coeff0, coeff8;
|
||||
__m128i out0, out8;
|
||||
__m128i packed_out;
|
||||
|
||||
// Load all inputs.
|
||||
// TODO(cduvivier): Make variable declarations and allocations aligned so that
|
||||
// we can use _mm_load_si128 instead of _mm_loadu_si128.
|
||||
__m128i in0 = _mm_loadu_si128((__m128i *)&in[0]);
|
||||
__m128i in8 = _mm_loadu_si128((__m128i *)&in[8]);
|
||||
const __m128i sharpen0 = _mm_loadu_si128((__m128i *)&mtx->sharpen_[0]);
|
||||
const __m128i sharpen8 = _mm_loadu_si128((__m128i *)&mtx->sharpen_[8]);
|
||||
const __m128i iq0 = _mm_loadu_si128((__m128i *)&mtx->iq_[0]);
|
||||
const __m128i iq8 = _mm_loadu_si128((__m128i *)&mtx->iq_[8]);
|
||||
const __m128i bias0 = _mm_loadu_si128((__m128i *)&mtx->bias_[0]);
|
||||
const __m128i bias8 = _mm_loadu_si128((__m128i *)&mtx->bias_[8]);
|
||||
const __m128i q0 = _mm_loadu_si128((__m128i *)&mtx->q_[0]);
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const __m128i q8 = _mm_loadu_si128((__m128i *)&mtx->q_[8]);
|
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const __m128i zthresh0 = _mm_loadu_si128((__m128i *)&mtx->zthresh_[0]);
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const __m128i zthresh8 = _mm_loadu_si128((__m128i *)&mtx->zthresh_[8]);
|
||||
|
||||
// sign(in) = in >> 15 (0x0000 if positive, 0xffff if negative)
|
||||
sign0 = _mm_srai_epi16(in0, 15);
|
||||
sign8 = _mm_srai_epi16(in8, 15);
|
||||
|
||||
// coeff = abs(in) = (in ^ sign) - sign
|
||||
coeff0 = _mm_xor_si128(in0, sign0);
|
||||
coeff8 = _mm_xor_si128(in8, sign8);
|
||||
coeff0 = _mm_sub_epi16(coeff0, sign0);
|
||||
coeff8 = _mm_sub_epi16(coeff8, sign8);
|
||||
|
||||
// coeff = abs(in) + sharpen
|
||||
coeff0 = _mm_add_epi16(coeff0, sharpen0);
|
||||
coeff8 = _mm_add_epi16(coeff8, sharpen8);
|
||||
|
||||
// if (coeff > 2047) coeff = 2047
|
||||
coeff0 = _mm_min_epi16(coeff0, max_coeff_2047);
|
||||
coeff8 = _mm_min_epi16(coeff8, max_coeff_2047);
|
||||
|
||||
// out = (coeff * iQ + B) >> QFIX;
|
||||
{
|
||||
// doing calculations with 32b precision (QFIX=17)
|
||||
// out = (coeff * iQ)
|
||||
__m128i coeff_iQ0H = _mm_mulhi_epu16(coeff0, iq0);
|
||||
__m128i coeff_iQ0L = _mm_mullo_epi16(coeff0, iq0);
|
||||
__m128i coeff_iQ8H = _mm_mulhi_epu16(coeff8, iq8);
|
||||
__m128i coeff_iQ8L = _mm_mullo_epi16(coeff8, iq8);
|
||||
__m128i out_00 = _mm_unpacklo_epi16(coeff_iQ0L, coeff_iQ0H);
|
||||
__m128i out_04 = _mm_unpackhi_epi16(coeff_iQ0L, coeff_iQ0H);
|
||||
__m128i out_08 = _mm_unpacklo_epi16(coeff_iQ8L, coeff_iQ8H);
|
||||
__m128i out_12 = _mm_unpackhi_epi16(coeff_iQ8L, coeff_iQ8H);
|
||||
// expand bias from 16b to 32b
|
||||
__m128i bias_00 = _mm_unpacklo_epi16(bias0, zero);
|
||||
__m128i bias_04 = _mm_unpackhi_epi16(bias0, zero);
|
||||
__m128i bias_08 = _mm_unpacklo_epi16(bias8, zero);
|
||||
__m128i bias_12 = _mm_unpackhi_epi16(bias8, zero);
|
||||
// out = (coeff * iQ + B)
|
||||
out_00 = _mm_add_epi32(out_00, bias_00);
|
||||
out_04 = _mm_add_epi32(out_04, bias_04);
|
||||
out_08 = _mm_add_epi32(out_08, bias_08);
|
||||
out_12 = _mm_add_epi32(out_12, bias_12);
|
||||
// out = (coeff * iQ + B) >> QFIX;
|
||||
out_00 = _mm_srai_epi32(out_00, QFIX);
|
||||
out_04 = _mm_srai_epi32(out_04, QFIX);
|
||||
out_08 = _mm_srai_epi32(out_08, QFIX);
|
||||
out_12 = _mm_srai_epi32(out_12, QFIX);
|
||||
// pack result as 16b
|
||||
out0 = _mm_packs_epi32(out_00, out_04);
|
||||
out8 = _mm_packs_epi32(out_08, out_12);
|
||||
}
|
||||
|
||||
// get sign back (if (sign[j]) out_n = -out_n)
|
||||
out0 = _mm_xor_si128(out0, sign0);
|
||||
out8 = _mm_xor_si128(out8, sign8);
|
||||
out0 = _mm_sub_epi16(out0, sign0);
|
||||
out8 = _mm_sub_epi16(out8, sign8);
|
||||
|
||||
// in = out * Q
|
||||
in0 = _mm_mullo_epi16(out0, q0);
|
||||
in8 = _mm_mullo_epi16(out8, q8);
|
||||
|
||||
// if (coeff <= mtx->zthresh_) {in=0; out=0;}
|
||||
{
|
||||
__m128i cmp0 = _mm_cmpgt_epi16(coeff0, zthresh0);
|
||||
__m128i cmp8 = _mm_cmpgt_epi16(coeff8, zthresh8);
|
||||
in0 = _mm_and_si128(in0, cmp0);
|
||||
in8 = _mm_and_si128(in8, cmp8);
|
||||
_mm_storeu_si128((__m128i *)&in[0], in0);
|
||||
_mm_storeu_si128((__m128i *)&in[8], in8);
|
||||
out0 = _mm_and_si128(out0, cmp0);
|
||||
out8 = _mm_and_si128(out8, cmp8);
|
||||
}
|
||||
|
||||
// zigzag the output before storing it.
|
||||
//
|
||||
// The zigzag pattern can almost be reproduced with a small sequence of
|
||||
// shuffles. After it, we only need to swap the 7th (ending up in third
|
||||
// position instead of twelfth) and 8th values.
|
||||
{
|
||||
__m128i outZ0, outZ8;
|
||||
outZ0 = _mm_shufflehi_epi16(out0, _MM_SHUFFLE(2, 1, 3, 0));
|
||||
outZ0 = _mm_shuffle_epi32 (outZ0, _MM_SHUFFLE(3, 1, 2, 0));
|
||||
outZ0 = _mm_shufflehi_epi16(outZ0, _MM_SHUFFLE(3, 1, 0, 2));
|
||||
outZ8 = _mm_shufflelo_epi16(out8, _MM_SHUFFLE(3, 0, 2, 1));
|
||||
outZ8 = _mm_shuffle_epi32 (outZ8, _MM_SHUFFLE(3, 1, 2, 0));
|
||||
outZ8 = _mm_shufflelo_epi16(outZ8, _MM_SHUFFLE(1, 3, 2, 0));
|
||||
_mm_storeu_si128((__m128i *)&out[0], outZ0);
|
||||
_mm_storeu_si128((__m128i *)&out[8], outZ8);
|
||||
packed_out = _mm_packs_epi16(outZ0, outZ8);
|
||||
}
|
||||
{
|
||||
const int16_t outZ_12 = out[12];
|
||||
const int16_t outZ_3 = out[3];
|
||||
out[3] = outZ_12;
|
||||
out[12] = outZ_3;
|
||||
}
|
||||
|
||||
// detect if all 'out' values are zeroes or not
|
||||
{
|
||||
int32_t tmp[4];
|
||||
_mm_storeu_si128((__m128i *)tmp, packed_out);
|
||||
if (n) {
|
||||
tmp[0] &= ~0xff;
|
||||
}
|
||||
return (tmp[3] || tmp[2] || tmp[1] || tmp[0]);
|
||||
}
|
||||
}
|
||||
|
||||
extern void VP8EncDspInitSSE2(void);
|
||||
void VP8EncDspInitSSE2(void) {
|
||||
VP8EncQuantizeBlock = QuantizeBlockSSE2;
|
||||
VP8ITransform = ITransformSSE2;
|
||||
VP8TDisto4x4 = Disto4x4SSE2;
|
||||
VP8TDisto16x16 = Disto16x16SSE2;
|
||||
}
|
||||
|
||||
#if defined(__cplusplus) || defined(c_plusplus)
|
||||
} // extern "C"
|
||||
#endif
|
||||
|
||||
#endif //__SSE2__
|
||||
@ -456,7 +456,7 @@ typedef enum {
|
||||
} CPUFeature;
|
||||
// returns true if the CPU supports the feature.
|
||||
typedef int (*VP8CPUInfo)(CPUFeature feature);
|
||||
extern VP8CPUInfo CPUInfo;
|
||||
extern VP8CPUInfo VP8GetCPUInfo;
|
||||
|
||||
void VP8EncDspInit(void); // must be called before using any of the above
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user