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00022 #include "libavutil/x86_cpu.h"
00023 #include "dsputil_mmx.h"
00024 #include "libavcodec/ac3dsp.h"
00025
00026 extern void ff_ac3_exponent_min_mmx (uint8_t *exp, int num_reuse_blocks, int nb_coefs);
00027 extern void ff_ac3_exponent_min_mmxext(uint8_t *exp, int num_reuse_blocks, int nb_coefs);
00028 extern void ff_ac3_exponent_min_sse2 (uint8_t *exp, int num_reuse_blocks, int nb_coefs);
00029
00030 extern int ff_ac3_max_msb_abs_int16_mmx (const int16_t *src, int len);
00031 extern int ff_ac3_max_msb_abs_int16_mmxext(const int16_t *src, int len);
00032 extern int ff_ac3_max_msb_abs_int16_sse2 (const int16_t *src, int len);
00033 extern int ff_ac3_max_msb_abs_int16_ssse3 (const int16_t *src, int len);
00034
00035 av_cold void ff_ac3dsp_init_x86(AC3DSPContext *c)
00036 {
00037 int mm_flags = av_get_cpu_flags();
00038
00039 #if HAVE_YASM
00040 if (mm_flags & AV_CPU_FLAG_MMX) {
00041 c->ac3_exponent_min = ff_ac3_exponent_min_mmx;
00042 c->ac3_max_msb_abs_int16 = ff_ac3_max_msb_abs_int16_mmx;
00043 }
00044 if (mm_flags & AV_CPU_FLAG_MMX2 && HAVE_MMX2) {
00045 c->ac3_exponent_min = ff_ac3_exponent_min_mmxext;
00046 c->ac3_max_msb_abs_int16 = ff_ac3_max_msb_abs_int16_mmxext;
00047 }
00048 if (mm_flags & AV_CPU_FLAG_SSE2 && HAVE_SSE) {
00049 c->ac3_exponent_min = ff_ac3_exponent_min_sse2;
00050 c->ac3_max_msb_abs_int16 = ff_ac3_max_msb_abs_int16_sse2;
00051 }
00052 if (mm_flags & AV_CPU_FLAG_SSSE3 && HAVE_SSSE3) {
00053 c->ac3_max_msb_abs_int16 = ff_ac3_max_msb_abs_int16_ssse3;
00054 }
00055 #endif
00056 }