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  • Committer: Package Import Robot
  • Author(s): Reinhard Tartler
  • Date: 2014-08-10 09:45:02 UTC
  • mfrom: (1.1.28) (2.1.45 sid)
  • Revision ID: package-import@ubuntu.com-20140810094502-p8pds4kq0zpig5oq
Tags: 6:11~alpha1-1
http://bugs.debian.org/749164
* New upstream Release v11
  - Fixes Unchecked conversion from double to enum (Closes: #749164)
* Add some post v11_alpha1 patches from upstream
* All SONAMEs bumped because of internal changes, but external API is
  promised to have not changed

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libavcodec/aarch64/cabac.h
 
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/*
 
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 * This file is part of Libav.
 
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 *
 
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 * Libav is free software; you can redistribute it and/or
 
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 * modify it under the terms of the GNU Lesser General Public
 
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 * License as published by the Free Software Foundation; either
 
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 * version 2.1 of the License, or (at your option) any later version.
 
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 *
 
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 * Libav is distributed in the hope that it will be useful,
 
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 
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 * Lesser General Public License for more details.
 
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 *
 
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 * You should have received a copy of the GNU Lesser General Public
 
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 * License along with Libav; if not, write to the Free Software
 
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 
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 */
 
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#ifndef AVCODEC_AARCH64_CABAC_H
 
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#define AVCODEC_AARCH64_CABAC_H
 
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#include "config.h"
 
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#if HAVE_INLINE_ASM
 
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#include "libavutil/attributes.h"
 
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#include "libavutil/internal.h"
 
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#include "libavcodec/cabac.h"
 
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#define get_cabac_inline get_cabac_inline_aarch64
 
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static av_always_inline int get_cabac_inline_aarch64(CABACContext *c,
 
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                                                     uint8_t *const state)
 
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{
 
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    int bit;
 
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    void *reg_a, *reg_b, *reg_c, *tmp;
 
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    __asm__ volatile(
 
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        "ldrb       %w[bit]       , [%[state]]                  \n\t"
 
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        "add        %[r_b]        , %[tables]   , %[lps_off]    \n\t"
 
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        "mov        %w[tmp]       , %w[range]                   \n\t"
 
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        "and        %w[range]     , %w[range]   , #0xC0         \n\t"
 
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        "lsl        %w[r_c]       , %w[range]   , #1            \n\t"
 
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        "add        %[r_b]        , %[r_b]      , %w[bit], UXTW \n\t"
 
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        "ldrb       %w[range]     , [%[r_b], %w[r_c], SXTW]     \n\t"
 
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        "sub        %w[r_c]       , %w[tmp]     , %w[range]     \n\t"
 
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        "lsl        %w[tmp]       , %w[r_c]     , #17           \n\t"
 
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        "cmp        %w[tmp]       , %w[low]                     \n\t"
 
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        "csel       %w[tmp]       , %w[tmp]     , wzr      , cc \n\t"
 
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        "csel       %w[range]     , %w[r_c]     , %w[range], gt \n\t"
 
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        "cinv       %w[bit]       , %w[bit]     , cc            \n\t"
 
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        "sub        %w[low]       , %w[low]     , %w[tmp]       \n\t"
 
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        "add        %[r_b]        , %[tables]   , %[norm_off]   \n\t"
 
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        "add        %[r_a]        , %[tables]   , %[mlps_off]   \n\t"
 
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        "ldrb       %w[tmp]       , [%[r_b], %w[range], SXTW]   \n\t"
 
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        "ldrb       %w[r_a]       , [%[r_a], %w[bit], SXTW]     \n\t"
 
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        "lsl        %w[low]       , %w[low]     , %w[tmp]       \n\t"
 
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        "lsl        %w[range]     , %w[range]   , %w[tmp]       \n\t"
 
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        "uxth       %w[r_c]       , %w[low]                     \n\t"
 
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        "strb       %w[r_a]       , [%[state]]                  \n\t"
 
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        "cbnz       %w[r_c]       , 2f                          \n\t"
 
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        "ldr        %[r_c]        , [%[c], %[byte]]             \n\t"
 
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        "ldr        %[r_a]        , [%[c], %[end]]              \n\t"
 
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        "ldrh       %w[tmp]       , [%[r_c]]                    \n\t"
 
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        "cmp        %[r_c]        , %[r_a]                      \n\t"
 
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        "b.ge       1f                                          \n\t"
 
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        "add        %[r_a]        , %[r_c]      , #2            \n\t"
 
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        "str        %[r_a]        , [%[c], %[byte]]             \n\t"
 
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        "1:                                                     \n\t"
 
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        "sub        %w[r_c]       , %w[low]     , #1            \n\t"
 
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        "eor        %w[r_c]       , %w[r_c]     , %w[low]       \n\t"
 
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        "rev        %w[tmp]       , %w[tmp]                     \n\t"
 
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        "lsr        %w[r_c]       , %w[r_c]     , #15           \n\t"
 
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        "lsr        %w[tmp]       , %w[tmp]     , #15           \n\t"
 
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        "ldrb       %w[r_c]       , [%[r_b], %w[r_c], SXTW]     \n\t"
 
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        "mov        %w[r_b]       , #0xFFFF                     \n\t"
 
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        "mov        %w[r_a]       , #7                          \n\t"
 
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        "sub        %w[tmp]       , %w[tmp]     , %w[r_b]       \n\t"
 
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        "sub        %w[r_c]       , %w[r_a]     , %w[r_c]       \n\t"
 
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        "lsl        %w[tmp]       , %w[tmp]     , %w[r_c]       \n\t"
 
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        "add        %w[low]       , %w[low]     , %w[tmp]       \n\t"
 
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        "2:                                                     \n\t"
 
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        :    [bit]"=&r"(bit),
 
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             [low]"+&r"(c->low),
 
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           [range]"+&r"(c->range),
 
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             [r_a]"=&r"(reg_a),
 
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             [r_b]"=&r"(reg_b),
 
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             [r_c]"=&r"(reg_c),
 
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             [tmp]"=&r"(tmp)
 
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        :        [c]"r"(c),
 
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             [state]"r"(state),
 
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            [tables]"r"(ff_h264_cabac_tables),
 
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              [byte]"i"(offsetof(CABACContext, bytestream)),
 
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               [end]"i"(offsetof(CABACContext, bytestream_end)),
 
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          [norm_off]"I"(H264_NORM_SHIFT_OFFSET),
 
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           [lps_off]"I"(H264_LPS_RANGE_OFFSET),
 
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          [mlps_off]"I"(H264_MLPS_STATE_OFFSET + 128)
 
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        : "memory", "cc"
 
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        );
 
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    return bit & 1;
 
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}
 
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#endif /* HAVE_INLINE_ASM */
 
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#endif /* AVCODEC_AARCH64_CABAC_H */