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- #include "pa_x86_plain_converters.h"
- #include "pa_converters.h"
- #include "pa_dither.h"
- #if defined(_WIN64) || defined(_WIN32_WCE)
- void PaUtil_InitializeX86PlainConverters( void )
- {
- }
- #else
- static const short fpuControlWord_ = 0x033F;
- static const double int32Scaler_ = 0x7FFFFFFF;
- static const double ditheredInt32Scaler_ = 0x7FFFFFFE;
- static const double int24Scaler_ = 0x7FFFFF;
- static const double ditheredInt24Scaler_ = 0x7FFFFE;
- static const double int16Scaler_ = 0x7FFF;
- static const double ditheredInt16Scaler_ = 0x7FFE;
- #define PA_DITHER_BITS_ (15)
- #define PA_FLOAT_DITHER_SCALE_ (1.0F / ((1<<PA_DITHER_BITS_)-1))
- static const float const_float_dither_scale_ = PA_FLOAT_DITHER_SCALE_;
- #define PA_DITHER_SHIFT_ ((32 - PA_DITHER_BITS_) + 1)
- /* -------------------------------------------------------------------------- */
- static void Float32_To_Int32(
- void *destinationBuffer, signed int destinationStride,
- void *sourceBuffer, signed int sourceStride,
- unsigned int count, PaUtilTriangularDitherGenerator *ditherGenerator )
- {
- /*
- float *src = (float*)sourceBuffer;
- signed long *dest = (signed long*)destinationBuffer;
- (void)ditherGenerator; // unused parameter
- while( count-- )
- {
- // REVIEW
- double scaled = *src * 0x7FFFFFFF;
- *dest = (signed long) scaled;
- src += sourceStride;
- dest += destinationStride;
- }
- */
- short savedFpuControlWord;
- (void) ditherGenerator; /* unused parameter */
- __asm{
- // esi -> source ptr
-
-
-
-
-
- mov esi, sourceBuffer
- mov edx, 4
- mov eax, sourceStride
- imul eax, edx
- mov ecx, count
- imul ecx, eax
- add ecx, esi
-
- mov edi, destinationBuffer
-
- mov ebx, destinationStride
- imul ebx, edx
- fwait
- fstcw savedFpuControlWord
- fldcw fpuControlWord_
- fld int32Scaler_
- Float32_To_Int32_loop:
-
- fld dword ptr [esi]
- add esi, eax
-
- fmul st(0), st(1)
-
- fistp dword ptr [edi]
- add edi, ebx
-
- cmp esi, ecx
- jne Float32_To_Int32_loop
- ffree st(0)
- fincstp
- fwait
- fnclex
- fldcw savedFpuControlWord
- }
- }
- static void Float32_To_Int32_Clip(
- void *destinationBuffer, signed int destinationStride,
- void *sourceBuffer, signed int sourceStride,
- unsigned int count, PaUtilTriangularDitherGenerator *ditherGenerator )
- {
- short savedFpuControlWord;
- (void) ditherGenerator;
- __asm{
-
-
-
-
-
-
- mov esi, sourceBuffer
- mov edx, 4
- mov eax, sourceStride
- imul eax, edx
- mov ecx, count
- imul ecx, eax
- add ecx, esi
-
- mov edi, destinationBuffer
-
- mov ebx, destinationStride
- imul ebx, edx
- fwait
- fstcw savedFpuControlWord
- fldcw fpuControlWord_
- fld int32Scaler_
- Float32_To_Int32_Clip_loop:
- mov edx, dword ptr [esi]
- and edx, 0x7FFFFFFF
- cmp edx, 0x3F800000
- jg Float32_To_Int32_Clip_clamp
-
- fld dword ptr [esi]
- add esi, eax
-
- fmul st(0), st(1)
- fistp dword ptr [edi]
- jmp Float32_To_Int32_Clip_stored
-
- Float32_To_Int32_Clip_clamp:
- mov edx, dword ptr [esi]
- shr edx, 31
- add esi, eax
-
- add edx, 0x7FFFFFFF
- mov dword ptr [edi], edx
- Float32_To_Int32_Clip_stored:
-
- lea edi, [edi+ebx]
- cmp esi, ecx
- jne Float32_To_Int32_Clip_loop
- ffree st(0)
- fincstp
- fwait
- fnclex
- fldcw savedFpuControlWord
- }
- }
- static void Float32_To_Int32_DitherClip(
- void *destinationBuffer, signed int destinationStride,
- void *sourceBuffer, signed int sourceStride,
- unsigned int count, PaUtilTriangularDitherGenerator *ditherGenerator )
- {
-
- short savedFpuControlWord;
-
- signed long sourceByteStride;
- signed long highpassedDither;
-
- unsigned long ditherPrevious = ditherGenerator->previous;
- unsigned long ditherRandSeed1 = ditherGenerator->randSeed1;
- unsigned long ditherRandSeed2 = ditherGenerator->randSeed2;
-
- __asm{
-
-
-
-
-
-
- mov esi, sourceBuffer
- mov edx, 4
- mov eax, sourceStride
- imul eax, edx
- mov ecx, count
- imul ecx, eax
- add ecx, esi
-
- mov edi, destinationBuffer
-
- mov ebx, destinationStride
- imul ebx, edx
- fwait
- fstcw savedFpuControlWord
- fldcw fpuControlWord_
- fld ditheredInt32Scaler_
- Float32_To_Int32_DitherClip_loop:
- mov edx, dword ptr [esi]
- and edx, 0x7FFFFFFF
- cmp edx, 0x3F800000
- jg Float32_To_Int32_DitherClip_clamp
-
- fld dword ptr [esi]
- add esi, eax
-
- fmul st(0), st(1)
-
-
- mov sourceByteStride, eax
- mov edx, 196314165
- mov eax, ditherRandSeed1
- mul edx
-
- lea eax, [eax+907633515]
- mov ditherRandSeed1, eax
- mov edx, 196314165
- mov eax, ditherRandSeed2
- mul edx
-
- lea eax, [eax+907633515]
- mov edx, ditherRandSeed1
- shr edx, PA_DITHER_SHIFT_
- mov ditherRandSeed2, eax
- shr eax, PA_DITHER_SHIFT_
-
- lea eax, [eax+edx]
- mov edx, ditherPrevious
- neg edx
- lea edx, [eax+edx]
- mov highpassedDither, edx
- mov ditherPrevious, eax
- mov eax, sourceByteStride
- fild highpassedDither
- fmul const_float_dither_scale_
-
-
- faddp st(1), st(0)
- fistp dword ptr [edi]
- jmp Float32_To_Int32_DitherClip_stored
-
- Float32_To_Int32_DitherClip_clamp:
- mov edx, dword ptr [esi]
- shr edx, 31
- add esi, eax
-
- add edx, 0x7FFFFFFF
- mov dword ptr [edi], edx
- Float32_To_Int32_DitherClip_stored:
-
- lea edi, [edi+ebx]
- cmp esi, ecx
- jne Float32_To_Int32_DitherClip_loop
- ffree st(0)
- fincstp
- fwait
- fnclex
- fldcw savedFpuControlWord
- }
- ditherGenerator->previous = ditherPrevious;
- ditherGenerator->randSeed1 = ditherRandSeed1;
- ditherGenerator->randSeed2 = ditherRandSeed2;
- }
- static void Float32_To_Int24(
- void *destinationBuffer, signed int destinationStride,
- void *sourceBuffer, signed int sourceStride,
- unsigned int count, PaUtilTriangularDitherGenerator *ditherGenerator )
- {
- short savedFpuControlWord;
-
- signed long tempInt32;
- (void) ditherGenerator;
-
- __asm{
-
-
-
-
-
-
- mov esi, sourceBuffer
- mov edx, 4
- mov eax, sourceStride
- imul eax, edx
- mov ecx, count
- imul ecx, eax
- add ecx, esi
- mov edi, destinationBuffer
- mov edx, 3
- mov ebx, destinationStride
- imul ebx, edx
- fwait
- fstcw savedFpuControlWord
- fldcw fpuControlWord_
- fld int24Scaler_
- Float32_To_Int24_loop:
-
- fld dword ptr [esi]
- add esi, eax
-
- fmul st(0), st(1)
- fistp tempInt32
- mov edx, tempInt32
- mov byte ptr [edi], DL
- shr edx, 8
-
-
- mov word ptr [edi+1], DX
-
- lea edi, [edi+ebx]
- cmp esi, ecx
- jne Float32_To_Int24_loop
- ffree st(0)
- fincstp
- fwait
- fnclex
- fldcw savedFpuControlWord
- }
- }
- static void Float32_To_Int24_Clip(
- void *destinationBuffer, signed int destinationStride,
- void *sourceBuffer, signed int sourceStride,
- unsigned int count, PaUtilTriangularDitherGenerator *ditherGenerator )
- {
- short savedFpuControlWord;
-
- signed long tempInt32;
- (void) ditherGenerator;
-
- __asm{
-
-
-
-
-
-
- mov esi, sourceBuffer
- mov edx, 4
- mov eax, sourceStride
- imul eax, edx
- mov ecx, count
- imul ecx, eax
- add ecx, esi
- mov edi, destinationBuffer
- mov edx, 3
- mov ebx, destinationStride
- imul ebx, edx
- fwait
- fstcw savedFpuControlWord
- fldcw fpuControlWord_
- fld int24Scaler_
- Float32_To_Int24_Clip_loop:
- mov edx, dword ptr [esi]
- and edx, 0x7FFFFFFF
- cmp edx, 0x3F800000
- jg Float32_To_Int24_Clip_clamp
-
- fld dword ptr [esi]
- add esi, eax
-
- fmul st(0), st(1)
- fistp tempInt32
- mov edx, tempInt32
- jmp Float32_To_Int24_Clip_store
-
- Float32_To_Int24_Clip_clamp:
- mov edx, dword ptr [esi]
- shr edx, 31
- add esi, eax
-
- add edx, 0x7FFFFF
- Float32_To_Int24_Clip_store:
- mov byte ptr [edi], DL
- shr edx, 8
-
-
- mov word ptr [edi+1], DX
-
- lea edi, [edi+ebx]
- cmp esi, ecx
- jne Float32_To_Int24_Clip_loop
- ffree st(0)
- fincstp
- fwait
- fnclex
- fldcw savedFpuControlWord
- }
- }
- static void Float32_To_Int24_DitherClip(
- void *destinationBuffer, signed int destinationStride,
- void *sourceBuffer, signed int sourceStride,
- unsigned int count, PaUtilTriangularDitherGenerator *ditherGenerator )
- {
- short savedFpuControlWord;
-
- signed long sourceByteStride;
- signed long highpassedDither;
-
- unsigned long ditherPrevious = ditherGenerator->previous;
- unsigned long ditherRandSeed1 = ditherGenerator->randSeed1;
- unsigned long ditherRandSeed2 = ditherGenerator->randSeed2;
-
- signed long tempInt32;
-
- __asm{
-
-
-
-
-
-
- mov esi, sourceBuffer
- mov edx, 4
- mov eax, sourceStride
- imul eax, edx
- mov ecx, count
- imul ecx, eax
- add ecx, esi
- mov edi, destinationBuffer
- mov edx, 3
- mov ebx, destinationStride
- imul ebx, edx
- fwait
- fstcw savedFpuControlWord
- fldcw fpuControlWord_
- fld ditheredInt24Scaler_
- Float32_To_Int24_DitherClip_loop:
- mov edx, dword ptr [esi]
- and edx, 0x7FFFFFFF
- cmp edx, 0x3F800000
- jg Float32_To_Int24_DitherClip_clamp
-
- fld dword ptr [esi]
- add esi, eax
-
- fmul st(0), st(1)
-
-
-
- mov sourceByteStride, eax
- mov edx, 196314165
- mov eax, ditherRandSeed1
- mul edx
-
- lea eax, [eax+907633515]
- mov ditherRandSeed1, eax
- mov edx, 196314165
- mov eax, ditherRandSeed2
- mul edx
-
- lea eax, [eax+907633515]
- mov edx, ditherRandSeed1
- shr edx, PA_DITHER_SHIFT_
- mov ditherRandSeed2, eax
- shr eax, PA_DITHER_SHIFT_
-
- lea eax, [eax+edx]
- mov edx, ditherPrevious
- neg edx
- lea edx, [eax+edx]
- mov highpassedDither, edx
- mov ditherPrevious, eax
- mov eax, sourceByteStride
- fild highpassedDither
- fmul const_float_dither_scale_
-
- faddp st(1), st(0)
- fistp tempInt32
- mov edx, tempInt32
- jmp Float32_To_Int24_DitherClip_store
-
- Float32_To_Int24_DitherClip_clamp:
- mov edx, dword ptr [esi]
- shr edx, 31
- add esi, eax
-
- add edx, 0x7FFFFF
- Float32_To_Int24_DitherClip_store:
- mov byte ptr [edi], DL
- shr edx, 8
-
-
- mov word ptr [edi+1], DX
-
- lea edi, [edi+ebx]
- cmp esi, ecx
- jne Float32_To_Int24_DitherClip_loop
- ffree st(0)
- fincstp
- fwait
- fnclex
- fldcw savedFpuControlWord
- }
- ditherGenerator->previous = ditherPrevious;
- ditherGenerator->randSeed1 = ditherRandSeed1;
- ditherGenerator->randSeed2 = ditherRandSeed2;
- }
- static void Float32_To_Int16(
- void *destinationBuffer, signed int destinationStride,
- void *sourceBuffer, signed int sourceStride,
- unsigned int count, PaUtilTriangularDitherGenerator *ditherGenerator )
- {
- short savedFpuControlWord;
-
- (void) ditherGenerator;
- __asm{
-
-
-
-
-
-
- mov esi, sourceBuffer
- mov edx, 4
- mov eax, sourceStride
- imul eax, edx
- mov ecx, count
- imul ecx, eax
- add ecx, esi
- mov edi, destinationBuffer
- mov edx, 2
- mov ebx, destinationStride
- imul ebx, edx
- fwait
- fstcw savedFpuControlWord
- fldcw fpuControlWord_
- fld int16Scaler_
- Float32_To_Int16_loop:
-
- fld dword ptr [esi]
- add esi, eax
-
- fmul st(0), st(1)
- fistp word ptr [edi]
- add edi, ebx
-
-
- cmp esi, ecx
- jne Float32_To_Int16_loop
- ffree st(0)
- fincstp
- fwait
- fnclex
- fldcw savedFpuControlWord
- }
- }
- static void Float32_To_Int16_Clip(
- void *destinationBuffer, signed int destinationStride,
- void *sourceBuffer, signed int sourceStride,
- unsigned int count, PaUtilTriangularDitherGenerator *ditherGenerator )
- {
- short savedFpuControlWord;
-
- (void) ditherGenerator;
- __asm{
-
-
-
-
-
-
- mov esi, sourceBuffer
- mov edx, 4
- mov eax, sourceStride
- imul eax, edx
- mov ecx, count
- imul ecx, eax
- add ecx, esi
- mov edi, destinationBuffer
- mov edx, 2
- mov ebx, destinationStride
- imul ebx, edx
- fwait
- fstcw savedFpuControlWord
- fldcw fpuControlWord_
- fld int16Scaler_
- Float32_To_Int16_Clip_loop:
- mov edx, dword ptr [esi]
- and edx, 0x7FFFFFFF
- cmp edx, 0x3F800000
- jg Float32_To_Int16_Clip_clamp
-
- fld dword ptr [esi]
- add esi, eax
-
- fmul st(0), st(1)
- fistp word ptr [edi]
- jmp Float32_To_Int16_Clip_stored
-
- Float32_To_Int16_Clip_clamp:
- mov edx, dword ptr [esi]
- shr edx, 31
- add esi, eax
-
- add dx, 0x7FFF
- mov word ptr [edi], dx
- Float32_To_Int16_Clip_stored:
- add edi, ebx
-
-
- cmp esi, ecx
- jne Float32_To_Int16_Clip_loop
- ffree st(0)
- fincstp
- fwait
- fnclex
- fldcw savedFpuControlWord
- }
- }
- static void Float32_To_Int16_DitherClip(
- void *destinationBuffer, signed int destinationStride,
- void *sourceBuffer, signed int sourceStride,
- unsigned int count, PaUtilTriangularDitherGenerator *ditherGenerator )
- {
- short savedFpuControlWord;
-
- signed long sourceByteStride;
- signed long highpassedDither;
-
- unsigned long ditherPrevious = ditherGenerator->previous;
- unsigned long ditherRandSeed1 = ditherGenerator->randSeed1;
- unsigned long ditherRandSeed2 = ditherGenerator->randSeed2;
- __asm{
-
-
-
-
-
-
- mov esi, sourceBuffer
- mov edx, 4
- mov eax, sourceStride
- imul eax, edx
- mov ecx, count
- imul ecx, eax
- add ecx, esi
- mov edi, destinationBuffer
- mov edx, 2
- mov ebx, destinationStride
- imul ebx, edx
- fwait
- fstcw savedFpuControlWord
- fldcw fpuControlWord_
- fld ditheredInt16Scaler_
- Float32_To_Int16_DitherClip_loop:
- mov edx, dword ptr [esi]
- and edx, 0x7FFFFFFF
- cmp edx, 0x3F800000
- jg Float32_To_Int16_DitherClip_clamp
-
- fld dword ptr [esi]
- add esi, eax
-
- fmul st(0), st(1)
-
-
- mov sourceByteStride, eax
- mov edx, 196314165
- mov eax, ditherRandSeed1
- mul edx
-
- lea eax, [eax+907633515]
- mov ditherRandSeed1, eax
- mov edx, 196314165
- mov eax, ditherRandSeed2
- mul edx
-
- lea eax, [eax+907633515]
- mov edx, ditherRandSeed1
- shr edx, PA_DITHER_SHIFT_
- mov ditherRandSeed2, eax
- shr eax, PA_DITHER_SHIFT_
-
- lea eax, [eax+edx]
- mov edx, ditherPrevious
- neg edx
- lea edx, [eax+edx]
- mov highpassedDither, edx
- mov ditherPrevious, eax
- mov eax, sourceByteStride
- fild highpassedDither
- fmul const_float_dither_scale_
-
-
- faddp st(1), st(0)
- fistp word ptr [edi]
- jmp Float32_To_Int16_DitherClip_stored
-
- Float32_To_Int16_DitherClip_clamp:
- mov edx, dword ptr [esi]
- shr edx, 31
- add esi, eax
-
- add dx, 0x7FFF
- mov word ptr [edi], dx
- Float32_To_Int16_DitherClip_stored:
- add edi, ebx
-
-
- cmp esi, ecx
- jne Float32_To_Int16_DitherClip_loop
- ffree st(0)
- fincstp
- fwait
- fnclex
- fldcw savedFpuControlWord
- }
- ditherGenerator->previous = ditherPrevious;
- ditherGenerator->randSeed1 = ditherRandSeed1;
- ditherGenerator->randSeed2 = ditherRandSeed2;
- }
- void PaUtil_InitializeX86PlainConverters( void )
- {
- paConverters.Float32_To_Int32 = Float32_To_Int32;
- paConverters.Float32_To_Int32_Clip = Float32_To_Int32_Clip;
- paConverters.Float32_To_Int32_DitherClip = Float32_To_Int32_DitherClip;
- paConverters.Float32_To_Int24 = Float32_To_Int24;
- paConverters.Float32_To_Int24_Clip = Float32_To_Int24_Clip;
- paConverters.Float32_To_Int24_DitherClip = Float32_To_Int24_DitherClip;
-
- paConverters.Float32_To_Int16 = Float32_To_Int16;
- paConverters.Float32_To_Int16_Clip = Float32_To_Int16_Clip;
- paConverters.Float32_To_Int16_DitherClip = Float32_To_Int16_DitherClip;
- }
- #endif
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