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Diffstat (limited to 'libavcodec/x86/mlpdsp_init.c')
-rw-r--r--libavcodec/x86/mlpdsp_init.c204
1 files changed, 204 insertions, 0 deletions
diff --git a/libavcodec/x86/mlpdsp_init.c b/libavcodec/x86/mlpdsp_init.c
new file mode 100644
index 0000000000..e9d9b1bf18
--- /dev/null
+++ b/libavcodec/x86/mlpdsp_init.c
@@ -0,0 +1,204 @@
+/*
+ * MLP DSP functions x86-optimized
+ * Copyright (c) 2009 Ramiro Polla
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "libavutil/attributes.h"
+#include "libavutil/cpu.h"
+#include "libavutil/x86/asm.h"
+#include "libavutil/x86/cpu.h"
+#include "libavcodec/mlpdsp.h"
+#include "libavcodec/mlp.h"
+
+#define REMATRIX_CHANNEL_FUNC(opt) \
+void ff_mlp_rematrix_channel_##opt(int32_t *samples, \
+ const int32_t *coeffs, \
+ const uint8_t *bypassed_lsbs, \
+ const int8_t *noise_buffer, \
+ int index, \
+ unsigned int dest_ch, \
+ uint16_t blockpos, \
+ unsigned int maxchan, \
+ int matrix_noise_shift, \
+ int access_unit_size_pow2, \
+ int32_t mask);
+
+REMATRIX_CHANNEL_FUNC(sse4)
+REMATRIX_CHANNEL_FUNC(avx2_bmi2)
+
+#if HAVE_7REGS && HAVE_INLINE_ASM && HAVE_INLINE_ASM_NONLOCAL_LABELS
+
+extern char ff_mlp_firorder_8;
+extern char ff_mlp_firorder_7;
+extern char ff_mlp_firorder_6;
+extern char ff_mlp_firorder_5;
+extern char ff_mlp_firorder_4;
+extern char ff_mlp_firorder_3;
+extern char ff_mlp_firorder_2;
+extern char ff_mlp_firorder_1;
+extern char ff_mlp_firorder_0;
+
+extern char ff_mlp_iirorder_4;
+extern char ff_mlp_iirorder_3;
+extern char ff_mlp_iirorder_2;
+extern char ff_mlp_iirorder_1;
+extern char ff_mlp_iirorder_0;
+
+static const void * const firtable[9] = { &ff_mlp_firorder_0, &ff_mlp_firorder_1,
+ &ff_mlp_firorder_2, &ff_mlp_firorder_3,
+ &ff_mlp_firorder_4, &ff_mlp_firorder_5,
+ &ff_mlp_firorder_6, &ff_mlp_firorder_7,
+ &ff_mlp_firorder_8 };
+static const void * const iirtable[5] = { &ff_mlp_iirorder_0, &ff_mlp_iirorder_1,
+ &ff_mlp_iirorder_2, &ff_mlp_iirorder_3,
+ &ff_mlp_iirorder_4 };
+
+#if ARCH_X86_64
+
+#define MLPMUL(label, offset, offs, offc) \
+ LABEL_MANGLE(label)": \n\t" \
+ "movslq "offset"+"offs"(%0), %%rax\n\t" \
+ "movslq "offset"+"offc"(%1), %%rdx\n\t" \
+ "imul %%rdx, %%rax\n\t" \
+ "add %%rax, %%rsi\n\t"
+
+#define FIRMULREG(label, offset, firc)\
+ LABEL_MANGLE(label)": \n\t" \
+ "movslq "#offset"(%0), %%rax\n\t" \
+ "imul %"#firc", %%rax\n\t" \
+ "add %%rax, %%rsi\n\t"
+
+#define CLEAR_ACCUM \
+ "xor %%rsi, %%rsi\n\t"
+
+#define SHIFT_ACCUM \
+ "shr %%cl, %%rsi\n\t"
+
+#define ACCUM "%%rdx"
+#define RESULT "%%rsi"
+#define RESULT32 "%%esi"
+
+#else /* if ARCH_X86_32 */
+
+#define MLPMUL(label, offset, offs, offc) \
+ LABEL_MANGLE(label)": \n\t" \
+ "mov "offset"+"offs"(%0), %%eax\n\t" \
+ "imull "offset"+"offc"(%1) \n\t" \
+ "add %%eax , %%esi\n\t" \
+ "adc %%edx , %%ecx\n\t"
+
+#define FIRMULREG(label, offset, firc) \
+ MLPMUL(label, #offset, "0", "0")
+
+#define CLEAR_ACCUM \
+ "xor %%esi, %%esi\n\t" \
+ "xor %%ecx, %%ecx\n\t"
+
+#define SHIFT_ACCUM \
+ "mov %%ecx, %%edx\n\t" \
+ "mov %%esi, %%eax\n\t" \
+ "movzbl %7 , %%ecx\n\t" \
+ "shrd %%cl, %%edx, %%eax\n\t" \
+
+#define ACCUM "%%edx"
+#define RESULT "%%eax"
+#define RESULT32 "%%eax"
+
+#endif /* !ARCH_X86_64 */
+
+#define BINC AV_STRINGIFY(4* MAX_CHANNELS)
+#define IOFFS AV_STRINGIFY(4*(MAX_FIR_ORDER + MAX_BLOCKSIZE))
+#define IOFFC AV_STRINGIFY(4* MAX_FIR_ORDER)
+
+#define FIRMUL(label, offset) MLPMUL(label, #offset, "0", "0")
+#define IIRMUL(label, offset) MLPMUL(label, #offset, IOFFS, IOFFC)
+
+static void mlp_filter_channel_x86(int32_t *state, const int32_t *coeff,
+ int firorder, int iirorder,
+ unsigned int filter_shift, int32_t mask,
+ int blocksize, int32_t *sample_buffer)
+{
+ const void *firjump = firtable[firorder];
+ const void *iirjump = iirtable[iirorder];
+
+ blocksize = -blocksize;
+
+ __asm__ volatile(
+ "1: \n\t"
+ CLEAR_ACCUM
+ "jmp *%5 \n\t"
+ FIRMUL (ff_mlp_firorder_8, 0x1c )
+ FIRMUL (ff_mlp_firorder_7, 0x18 )
+ FIRMUL (ff_mlp_firorder_6, 0x14 )
+ FIRMUL (ff_mlp_firorder_5, 0x10 )
+ FIRMUL (ff_mlp_firorder_4, 0x0c )
+ FIRMUL (ff_mlp_firorder_3, 0x08 )
+ FIRMUL (ff_mlp_firorder_2, 0x04 )
+ FIRMULREG(ff_mlp_firorder_1, 0x00, 8)
+ LABEL_MANGLE(ff_mlp_firorder_0)":\n\t"
+ "jmp *%6 \n\t"
+ IIRMUL (ff_mlp_iirorder_4, 0x0c )
+ IIRMUL (ff_mlp_iirorder_3, 0x08 )
+ IIRMUL (ff_mlp_iirorder_2, 0x04 )
+ IIRMUL (ff_mlp_iirorder_1, 0x00 )
+ LABEL_MANGLE(ff_mlp_iirorder_0)":\n\t"
+ SHIFT_ACCUM
+ "mov "RESULT" ,"ACCUM" \n\t"
+ "add (%2) ,"RESULT" \n\t"
+ "and %4 ,"RESULT" \n\t"
+ "sub $4 , %0 \n\t"
+ "mov "RESULT32", (%0) \n\t"
+ "mov "RESULT32", (%2) \n\t"
+ "add $"BINC" , %2 \n\t"
+ "sub "ACCUM" ,"RESULT" \n\t"
+ "mov "RESULT32","IOFFS"(%0) \n\t"
+ "incl %3 \n\t"
+ "js 1b \n\t"
+ : /* 0*/"+r"(state),
+ /* 1*/"+r"(coeff),
+ /* 2*/"+r"(sample_buffer),
+#if ARCH_X86_64
+ /* 3*/"+r"(blocksize)
+ : /* 4*/"r"((x86_reg)mask), /* 5*/"r"(firjump),
+ /* 6*/"r"(iirjump) , /* 7*/"c"(filter_shift)
+ , /* 8*/"r"((int64_t)coeff[0])
+ : "rax", "rdx", "rsi"
+#else /* ARCH_X86_32 */
+ /* 3*/"+m"(blocksize)
+ : /* 4*/"m"( mask), /* 5*/"m"(firjump),
+ /* 6*/"m"(iirjump) , /* 7*/"m"(filter_shift)
+ : "eax", "edx", "esi", "ecx"
+#endif /* !ARCH_X86_64 */
+ );
+}
+
+#endif /* HAVE_7REGS && HAVE_INLINE_ASM */
+
+av_cold void ff_mlpdsp_init_x86(MLPDSPContext *c)
+{
+ int cpu_flags = av_get_cpu_flags();
+#if HAVE_7REGS && HAVE_INLINE_ASM && HAVE_INLINE_ASM_NONLOCAL_LABELS
+ if (INLINE_MMX(cpu_flags))
+ c->mlp_filter_channel = mlp_filter_channel_x86;
+#endif
+ if (ARCH_X86_64 && EXTERNAL_SSE4(cpu_flags))
+ c->mlp_rematrix_channel = ff_mlp_rematrix_channel_sse4;
+ if (ARCH_X86_64 && EXTERNAL_AVX2(cpu_flags) && cpu_flags & AV_CPU_FLAG_BMI2)
+ c->mlp_rematrix_channel = ff_mlp_rematrix_channel_avx2_bmi2;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-09 21:33:31 +0000