* H.26L/H.264/AVC/JVT/14496-10/... encoder/decoder
* Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav 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,
+ * Libav 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
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef AVCODEC_X86_H264_I386_H
#define AVCODEC_X86_H264_I386_H
+#include <stddef.h>
+
#include "libavcodec/cabac.h"
+#include "cabac.h"
+
+#if HAVE_INLINE_ASM
//FIXME use some macros to avoid duplicating get_cabac (cannot be done yet
//as that would make optimization work hard)
-#if ARCH_X86 && HAVE_7REGS && HAVE_EBX_AVAILABLE && !defined(BROKEN_RELOCATIONS)
+#if HAVE_7REGS
+#define decode_significance decode_significance_x86
static int decode_significance_x86(CABACContext *c, int max_coeff,
uint8_t *significant_coeff_ctx_base,
- int *index){
+ int *index, x86_reg last_off){
void *end= significant_coeff_ctx_base + max_coeff - 1;
- int minusstart= -(int)significant_coeff_ctx_base;
- int minusindex= 4-(int)index;
- int coeff_count;
- __asm__ volatile(
- "movl "RANGE "(%3), %%esi \n\t"
- "movl "LOW "(%3), %%ebx \n\t"
+ int minusstart= -(intptr_t)significant_coeff_ctx_base;
+ int minusindex= 4-(intptr_t)index;
+ int bit;
+ x86_reg coeff_count;
- "2: \n\t"
+#ifdef BROKEN_RELOCATIONS
+ void *tables;
- BRANCHLESS_GET_CABAC("%%edx", "%3", "(%1)", "%%ebx",
- "%%bx", "%%esi", "%%eax", "%%al")
-
- "test $1, %%edx \n\t"
- " jz 3f \n\t"
+ __asm__ volatile(
+ "lea "MANGLE(ff_h264_cabac_tables)", %0 \n\t"
+ : "=&r"(tables)
+ );
+#endif
- BRANCHLESS_GET_CABAC("%%edx", "%3", "61(%1)", "%%ebx",
- "%%bx", "%%esi", "%%eax", "%%al")
+ __asm__ volatile(
+ "3: \n\t"
- "mov %2, %%"REG_a" \n\t"
- "movl %4, %%ecx \n\t"
+ BRANCHLESS_GET_CABAC("%4", "%q4", "(%1)", "%3", "%w3",
+ "%5", "%q5", "%k0", "%b0",
+ "%c11(%6)", "%c12(%6)",
+ AV_STRINGIFY(H264_NORM_SHIFT_OFFSET),
+ AV_STRINGIFY(H264_LPS_RANGE_OFFSET),
+ AV_STRINGIFY(H264_MLPS_STATE_OFFSET),
+ "%13")
+
+ "test $1, %4 \n\t"
+ " jz 4f \n\t"
+ "add %10, %1 \n\t"
+
+ BRANCHLESS_GET_CABAC("%4", "%q4", "(%1)", "%3", "%w3",
+ "%5", "%q5", "%k0", "%b0",
+ "%c11(%6)", "%c12(%6)",
+ AV_STRINGIFY(H264_NORM_SHIFT_OFFSET),
+ AV_STRINGIFY(H264_LPS_RANGE_OFFSET),
+ AV_STRINGIFY(H264_MLPS_STATE_OFFSET),
+ "%13")
+
+ "sub %10, %1 \n\t"
+ "mov %2, %0 \n\t"
+ "movl %7, %%ecx \n\t"
"add %1, %%"REG_c" \n\t"
- "movl %%ecx, (%%"REG_a") \n\t"
+ "movl %%ecx, (%0) \n\t"
- "test $1, %%edx \n\t"
- " jnz 4f \n\t"
+ "test $1, %4 \n\t"
+ " jnz 5f \n\t"
- "add $4, %%"REG_a" \n\t"
- "mov %%"REG_a", %2 \n\t"
+ "add"OPSIZE" $4, %2 \n\t"
- "3: \n\t"
+ "4: \n\t"
"add $1, %1 \n\t"
- "cmp %5, %1 \n\t"
- " jb 2b \n\t"
- "mov %2, %%"REG_a" \n\t"
- "movl %4, %%ecx \n\t"
+ "cmp %8, %1 \n\t"
+ " jb 3b \n\t"
+ "mov %2, %0 \n\t"
+ "movl %7, %%ecx \n\t"
"add %1, %%"REG_c" \n\t"
- "movl %%ecx, (%%"REG_a") \n\t"
- "4: \n\t"
- "add %6, %%eax \n\t"
- "shr $2, %%eax \n\t"
-
- "movl %%esi, "RANGE "(%3) \n\t"
- "movl %%ebx, "LOW "(%3) \n\t"
- :"=&a"(coeff_count), "+r"(significant_coeff_ctx_base), "+m"(index)
- :"r"(c), "m"(minusstart), "m"(end), "m"(minusindex)
- : "%"REG_c, "%ebx", "%edx", "%esi", "memory"
+ "movl %%ecx, (%0) \n\t"
+ "5: \n\t"
+ "add %9, %k0 \n\t"
+ "shr $2, %k0 \n\t"
+ : "=&q"(coeff_count), "+r"(significant_coeff_ctx_base), "+m"(index),
+ "+&r"(c->low), "=&r"(bit), "+&r"(c->range)
+ : "r"(c), "m"(minusstart), "m"(end), "m"(minusindex), "m"(last_off),
+ "i"(offsetof(CABACContext, bytestream)),
+ "i"(offsetof(CABACContext, bytestream_end))
+ TABLES_ARG
+ : "%"REG_c, "memory"
);
return coeff_count;
}
+#define decode_significance_8x8 decode_significance_8x8_x86
static int decode_significance_8x8_x86(CABACContext *c,
uint8_t *significant_coeff_ctx_base,
- int *index, const uint8_t *sig_off){
- int minusindex= 4-(int)index;
- int coeff_count;
+ int *index, uint8_t *last_coeff_ctx_base, const uint8_t *sig_off){
+ int minusindex= 4-(intptr_t)index;
+ int bit;
+ x86_reg coeff_count;
x86_reg last=0;
- __asm__ volatile(
- "movl "RANGE "(%3), %%esi \n\t"
- "movl "LOW "(%3), %%ebx \n\t"
-
- "mov %1, %%"REG_D" \n\t"
- "2: \n\t"
-
- "mov %6, %%"REG_a" \n\t"
- "movzbl (%%"REG_a", %%"REG_D"), %%edi \n\t"
- "add %5, %%"REG_D" \n\t"
-
- BRANCHLESS_GET_CABAC("%%edx", "%3", "(%%"REG_D")", "%%ebx",
- "%%bx", "%%esi", "%%eax", "%%al")
-
- "mov %1, %%edi \n\t"
- "test $1, %%edx \n\t"
- " jz 3f \n\t"
-
- "movzbl "MANGLE(last_coeff_flag_offset_8x8)"(%%edi), %%edi\n\t"
- "add %5, %%"REG_D" \n\t"
+ x86_reg state;
- BRANCHLESS_GET_CABAC("%%edx", "%3", "15(%%"REG_D")", "%%ebx",
- "%%bx", "%%esi", "%%eax", "%%al")
+#ifdef BROKEN_RELOCATIONS
+ void *tables;
- "mov %2, %%"REG_a" \n\t"
- "mov %1, %%edi \n\t"
- "movl %%edi, (%%"REG_a") \n\t"
+ __asm__ volatile(
+ "lea "MANGLE(ff_h264_cabac_tables)", %0 \n\t"
+ : "=&r"(tables)
+ );
+#endif
- "test $1, %%edx \n\t"
- " jnz 4f \n\t"
+ __asm__ volatile(
+ "mov %1, %6 \n\t"
+ "3: \n\t"
- "add $4, %%"REG_a" \n\t"
- "mov %%"REG_a", %2 \n\t"
+ "mov %10, %0 \n\t"
+ "movzbl (%0, %6), %k6 \n\t"
+ "add %9, %6 \n\t"
+
+ BRANCHLESS_GET_CABAC("%4", "%q4", "(%6)", "%3", "%w3",
+ "%5", "%q5", "%k0", "%b0",
+ "%c12(%7)", "%c13(%7)",
+ AV_STRINGIFY(H264_NORM_SHIFT_OFFSET),
+ AV_STRINGIFY(H264_LPS_RANGE_OFFSET),
+ AV_STRINGIFY(H264_MLPS_STATE_OFFSET),
+ "%15")
+
+ "mov %1, %k6 \n\t"
+ "test $1, %4 \n\t"
+ " jz 4f \n\t"
+
+#ifdef BROKEN_RELOCATIONS
+ "movzbl %c14(%15, %q6), %k6\n\t"
+#else
+ "movzbl "MANGLE(ff_h264_cabac_tables)"+%c14(%k6), %k6\n\t"
+#endif
+ "add %11, %6 \n\t"
+
+ BRANCHLESS_GET_CABAC("%4", "%q4", "(%6)", "%3", "%w3",
+ "%5", "%q5", "%k0", "%b0",
+ "%c12(%7)", "%c13(%7)",
+ AV_STRINGIFY(H264_NORM_SHIFT_OFFSET),
+ AV_STRINGIFY(H264_LPS_RANGE_OFFSET),
+ AV_STRINGIFY(H264_MLPS_STATE_OFFSET),
+ "%15")
+
+ "mov %2, %0 \n\t"
+ "mov %1, %k6 \n\t"
+ "movl %k6, (%0) \n\t"
+
+ "test $1, %4 \n\t"
+ " jnz 5f \n\t"
+
+ "add"OPSIZE" $4, %2 \n\t"
- "3: \n\t"
- "addl $1, %%edi \n\t"
- "mov %%edi, %1 \n\t"
- "cmpl $63, %%edi \n\t"
- " jb 2b \n\t"
- "mov %2, %%"REG_a" \n\t"
- "movl %%edi, (%%"REG_a") \n\t"
"4: \n\t"
- "addl %4, %%eax \n\t"
- "shr $2, %%eax \n\t"
-
- "movl %%esi, "RANGE "(%3) \n\t"
- "movl %%ebx, "LOW "(%3) \n\t"
- :"=&a"(coeff_count),"+m"(last), "+m"(index)
- :"r"(c), "m"(minusindex), "m"(significant_coeff_ctx_base), "m"(sig_off)
- : "%"REG_c, "%ebx", "%edx", "%esi", "%"REG_D, "memory"
+ "addl $1, %k6 \n\t"
+ "mov %k6, %1 \n\t"
+ "cmpl $63, %k6 \n\t"
+ " jb 3b \n\t"
+ "mov %2, %0 \n\t"
+ "movl %k6, (%0) \n\t"
+ "5: \n\t"
+ "addl %8, %k0 \n\t"
+ "shr $2, %k0 \n\t"
+ : "=&q"(coeff_count), "+m"(last), "+m"(index), "+&r"(c->low),
+ "=&r"(bit), "+&r"(c->range), "=&r"(state)
+ : "r"(c), "m"(minusindex), "m"(significant_coeff_ctx_base),
+ "m"(sig_off), "m"(last_coeff_ctx_base),
+ "i"(offsetof(CABACContext, bytestream)),
+ "i"(offsetof(CABACContext, bytestream_end)),
+ "i"(H264_LAST_COEFF_FLAG_OFFSET_8x8_OFFSET) TABLES_ARG
+ : "%"REG_c, "memory"
);
return coeff_count;
}
-#endif /* ARCH_X86 && HAVE_7REGS && HAVE_EBX_AVAILABLE */
- /* !defined(BROKEN_RELOCATIONS) */
+#endif /* HAVE_7REGS && !defined(BROKEN_RELOCATIONS) */
+#endif /* HAVE_INLINE_ASM */
#endif /* AVCODEC_X86_H264_I386_H */
projects / ffmpeg / blobdiff