chasing indexing error

1 files changed, 0 insertions, 245 deletions

diff --git a/ffmpeg/libavcodec/mpeg12.c b/ffmpeg/libavcodec/mpeg12.c
deleted file mode 100644
index 09b1f19..0000000
--- a/ffmpeg/libavcodec/mpeg12.c
+++ /dev/null
@@ -1,245 +0,0 @@
-/*
- * MPEG-1/2 decoder
- * Copyright (c) 2000, 2001 Fabrice Bellard
- * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
- *
- * 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
- */
-
-/**
- * @file
- * MPEG-1/2 decoder
- */
-
-#define UNCHECKED_BITSTREAM_READER 1
-
-#include "libavutil/attributes.h"
-#include "libavutil/avassert.h"
-#include "libavutil/timecode.h"
-
-#include "internal.h"
-#include "avcodec.h"
-#include "dsputil.h"
-#include "mpegvideo.h"
-#include "error_resilience.h"
-#include "mpeg12.h"
-#include "mpeg12data.h"
-#include "bytestream.h"
-#include "vdpau_internal.h"
-#include "thread.h"
-
-uint8_t ff_mpeg12_static_rl_table_store[2][2][2*MAX_RUN + MAX_LEVEL + 3];
-
-static const uint8_t table_mb_ptype[7][2] = {
-    { 3, 5 }, // 0x01 MB_INTRA
-    { 1, 2 }, // 0x02 MB_PAT
-    { 1, 3 }, // 0x08 MB_FOR
-    { 1, 1 }, // 0x0A MB_FOR|MB_PAT
-    { 1, 6 }, // 0x11 MB_QUANT|MB_INTRA
-    { 1, 5 }, // 0x12 MB_QUANT|MB_PAT
-    { 2, 5 }, // 0x1A MB_QUANT|MB_FOR|MB_PAT
-};
-
-static const uint8_t table_mb_btype[11][2] = {
-    { 3, 5 }, // 0x01 MB_INTRA
-    { 2, 3 }, // 0x04 MB_BACK
-    { 3, 3 }, // 0x06 MB_BACK|MB_PAT
-    { 2, 4 }, // 0x08 MB_FOR
-    { 3, 4 }, // 0x0A MB_FOR|MB_PAT
-    { 2, 2 }, // 0x0C MB_FOR|MB_BACK
-    { 3, 2 }, // 0x0E MB_FOR|MB_BACK|MB_PAT
-    { 1, 6 }, // 0x11 MB_QUANT|MB_INTRA
-    { 2, 6 }, // 0x16 MB_QUANT|MB_BACK|MB_PAT
-    { 3, 6 }, // 0x1A MB_QUANT|MB_FOR|MB_PAT
-    { 2, 5 }, // 0x1E MB_QUANT|MB_FOR|MB_BACK|MB_PAT
-};
-
-#define INIT_2D_VLC_RL(rl, static_size)\
-{\
-    static RL_VLC_ELEM rl_vlc_table[static_size];\
-    INIT_VLC_STATIC(&rl.vlc, TEX_VLC_BITS, rl.n + 2,\
-                    &rl.table_vlc[0][1], 4, 2,\
-                    &rl.table_vlc[0][0], 4, 2, static_size);\
-\
-    rl.rl_vlc[0] = rl_vlc_table;\
-    init_2d_vlc_rl(&rl);\
-}
-
-static av_cold void init_2d_vlc_rl(RLTable *rl)
-{
-    int i;
-
-    for (i = 0; i < rl->vlc.table_size; i++) {
-        int code = rl->vlc.table[i][0];
-        int len  = rl->vlc.table[i][1];
-        int level, run;
-
-        if (len == 0) { // illegal code
-            run   = 65;
-            level = MAX_LEVEL;
-        } else if (len<0) { //more bits needed
-            run   = 0;
-            level = code;
-        } else {
-            if (code == rl->n) { //esc
-                run   = 65;
-                level = 0;
-            } else if (code == rl->n+1) { //eob
-                run   = 0;
-                level = 127;
-            } else {
-                run   = rl->table_run  [code] + 1;
-                level = rl->table_level[code];
-            }
-        }
-        rl->rl_vlc[0][i].len   = len;
-        rl->rl_vlc[0][i].level = level;
-        rl->rl_vlc[0][i].run   = run;
-    }
-}
-
-av_cold void ff_mpeg12_common_init(MpegEncContext *s)
-{
-
-    s->y_dc_scale_table =
-    s->c_dc_scale_table = ff_mpeg2_dc_scale_table[s->intra_dc_precision];
-
-}
-
-void ff_mpeg1_clean_buffers(MpegEncContext *s)
-{
-    s->last_dc[0] = 1 << (7 + s->intra_dc_precision);
-    s->last_dc[1] = s->last_dc[0];
-    s->last_dc[2] = s->last_dc[0];
-    memset(s->last_mv, 0, sizeof(s->last_mv));
-}
-
-
-/******************************************/
-/* decoding */
-
-VLC ff_mv_vlc;
-
-VLC ff_dc_lum_vlc;
-VLC ff_dc_chroma_vlc;
-
-VLC ff_mbincr_vlc;
-VLC ff_mb_ptype_vlc;
-VLC ff_mb_btype_vlc;
-VLC ff_mb_pat_vlc;
-
-av_cold void ff_mpeg12_init_vlcs(void)
-{
-    static int done = 0;
-
-    if (!done) {
-        done = 1;
-
-        INIT_VLC_STATIC(&ff_dc_lum_vlc, DC_VLC_BITS, 12,
-                        ff_mpeg12_vlc_dc_lum_bits, 1, 1,
-                        ff_mpeg12_vlc_dc_lum_code, 2, 2, 512);
-        INIT_VLC_STATIC(&ff_dc_chroma_vlc,  DC_VLC_BITS, 12,
-                        ff_mpeg12_vlc_dc_chroma_bits, 1, 1,
-                        ff_mpeg12_vlc_dc_chroma_code, 2, 2, 514);
-        INIT_VLC_STATIC(&ff_mv_vlc, MV_VLC_BITS, 17,
-                        &ff_mpeg12_mbMotionVectorTable[0][1], 2, 1,
-                        &ff_mpeg12_mbMotionVectorTable[0][0], 2, 1, 518);
-        INIT_VLC_STATIC(&ff_mbincr_vlc, MBINCR_VLC_BITS, 36,
-                        &ff_mpeg12_mbAddrIncrTable[0][1], 2, 1,
-                        &ff_mpeg12_mbAddrIncrTable[0][0], 2, 1, 538);
-        INIT_VLC_STATIC(&ff_mb_pat_vlc, MB_PAT_VLC_BITS, 64,
-                        &ff_mpeg12_mbPatTable[0][1], 2, 1,
-                        &ff_mpeg12_mbPatTable[0][0], 2, 1, 512);
-
-        INIT_VLC_STATIC(&ff_mb_ptype_vlc, MB_PTYPE_VLC_BITS, 7,
-                        &table_mb_ptype[0][1], 2, 1,
-                        &table_mb_ptype[0][0], 2, 1, 64);
-        INIT_VLC_STATIC(&ff_mb_btype_vlc, MB_BTYPE_VLC_BITS, 11,
-                        &table_mb_btype[0][1], 2, 1,
-                        &table_mb_btype[0][0], 2, 1, 64);
-        ff_init_rl(&ff_rl_mpeg1, ff_mpeg12_static_rl_table_store[0]);
-        ff_init_rl(&ff_rl_mpeg2, ff_mpeg12_static_rl_table_store[1]);
-
-        INIT_2D_VLC_RL(ff_rl_mpeg1, 680);
-        INIT_2D_VLC_RL(ff_rl_mpeg2, 674);
-    }
-}
-
-/**
- * Find the end of the current frame in the bitstream.
- * @return the position of the first byte of the next frame, or -1
- */
-int ff_mpeg1_find_frame_end(ParseContext *pc, const uint8_t *buf, int buf_size, AVCodecParserContext *s)
-{
-    int i;
-    uint32_t state = pc->state;
-
-    /* EOF considered as end of frame */
-    if (buf_size == 0)
-        return 0;
-
-/*
- 0  frame start         -> 1/4
- 1  first_SEQEXT        -> 0/2
- 2  first field start   -> 3/0
- 3  second_SEQEXT       -> 2/0
- 4  searching end
-*/
-
-    for (i = 0; i < buf_size; i++) {
-        av_assert1(pc->frame_start_found >= 0 && pc->frame_start_found <= 4);
-        if (pc->frame_start_found & 1) {
-            if (state == EXT_START_CODE && (buf[i] & 0xF0) != 0x80)
-                pc->frame_start_found--;
-            else if (state == EXT_START_CODE + 2) {
-                if ((buf[i] & 3) == 3)
-                    pc->frame_start_found = 0;
-                else
-                    pc->frame_start_found = (pc->frame_start_found + 1) & 3;
-            }
-            state++;
-        } else {
-            i = avpriv_find_start_code(buf + i, buf + buf_size, &state) - buf - 1;
-            if (pc->frame_start_found == 0 && state >= SLICE_MIN_START_CODE && state <= SLICE_MAX_START_CODE) {
-                i++;
-                pc->frame_start_found = 4;
-            }
-            if (state == SEQ_END_CODE) {
-                pc->frame_start_found = 0;
-                pc->state=-1;
-                return i+1;
-            }
-            if (pc->frame_start_found == 2 && state == SEQ_START_CODE)
-                pc->frame_start_found = 0;
-            if (pc->frame_start_found  < 4 && state == EXT_START_CODE)
-                pc->frame_start_found++;
-            if (pc->frame_start_found == 4 && (state & 0xFFFFFF00) == 0x100) {
-                if (state < SLICE_MIN_START_CODE || state > SLICE_MAX_START_CODE) {
-                    pc->frame_start_found = 0;
-                    pc->state             = -1;
-                    return i - 3;
-                }
-            }
-            if (pc->frame_start_found == 0 && s && state == PICTURE_START_CODE) {
-                ff_fetch_timestamp(s, i - 3, 1);
-            }
-        }
-    }
-    pc->state = state;
-    return END_NOT_FOUND;
-}
-