chasing indexing error

1 files changed, 0 insertions, 159 deletions

diff --git a/ffmpeg/libavcodec/rangecoder.c b/ffmpeg/libavcodec/rangecoder.c
deleted file mode 100644
index 69150a5..0000000
--- a/ffmpeg/libavcodec/rangecoder.c
+++ /dev/null
@@ -1,159 +0,0 @@
-/*
- * Range coder
- * Copyright (c) 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
- * Range coder.
- * based upon
- *    "Range encoding: an algorithm for removing redundancy from a digitised
- *                     message.
- *     G. N. N. Martin                  Presented in March 1979 to the Video &
- *                                      Data Recording Conference,
- *     IBM UK Scientific Center         held in Southampton July 24-27 1979."
- *
- */
-
-#include <string.h>
-
-#include "libavutil/attributes.h"
-#include "libavutil/avassert.h"
-#include "avcodec.h"
-#include "rangecoder.h"
-#include "bytestream.h"
-
-av_cold void ff_init_range_encoder(RangeCoder *c, uint8_t *buf, int buf_size)
-{
-    c->bytestream_start  =
-    c->bytestream        = buf;
-    c->bytestream_end    = buf + buf_size;
-    c->low               = 0;
-    c->range             = 0xFF00;
-    c->outstanding_count = 0;
-    c->outstanding_byte  = -1;
-}
-
-av_cold void ff_init_range_decoder(RangeCoder *c, const uint8_t *buf,
-                                   int buf_size)
-{
-    /* cast to avoid compiler warning */
-    ff_init_range_encoder(c, (uint8_t *)buf, buf_size);
-
-    c->low = bytestream_get_be16((const uint8_t **)&c->bytestream);
-}
-
-void ff_build_rac_states(RangeCoder *c, int factor, int max_p)
-{
-    const int64_t one = 1LL << 32;
-    int64_t p;
-    int last_p8, p8, i;
-
-    memset(c->zero_state, 0, sizeof(c->zero_state));
-    memset(c->one_state, 0, sizeof(c->one_state));
-
-    last_p8 = 0;
-    p       = one / 2;
-    for (i = 0; i < 128; i++) {
-        p8 = (256 * p + one / 2) >> 32; // FIXME: try without the one
-        if (p8 <= last_p8)
-            p8 = last_p8 + 1;
-        if (last_p8 && last_p8 < 256 && p8 <= max_p)
-            c->one_state[last_p8] = p8;
-
-        p      += ((one - p) * factor + one / 2) >> 32;
-        last_p8 = p8;
-    }
-
-    for (i = 256 - max_p; i <= max_p; i++) {
-        if (c->one_state[i])
-            continue;
-
-        p  = (i * one + 128) >> 8;
-        p += ((one - p) * factor + one / 2) >> 32;
-        p8 = (256 * p + one / 2) >> 32; // FIXME: try without the one
-        if (p8 <= i)
-            p8 = i + 1;
-        if (p8 > max_p)
-            p8 = max_p;
-        c->one_state[i] = p8;
-    }
-
-    for (i = 1; i < 255; i++)
-        c->zero_state[i] = 256 - c->one_state[256 - i];
-}
-
-/* Return the number of bytes written. */
-int ff_rac_terminate(RangeCoder *c)
-{
-    c->range = 0xFF;
-    c->low  += 0xFF;
-    renorm_encoder(c);
-    c->range = 0xFF;
-    renorm_encoder(c);
-
-    av_assert1(c->low   == 0);
-    av_assert1(c->range >= 0x100);
-
-    return c->bytestream - c->bytestream_start;
-}
-
-#ifdef TEST
-#define SIZE 10240
-
-#include "libavutil/lfg.h"
-#include "libavutil/log.h"
-
-int main(void)
-{
-    RangeCoder c;
-    uint8_t b[9 * SIZE];
-    uint8_t r[9 * SIZE];
-    int i;
-    uint8_t state[10];
-    AVLFG prng;
-
-    av_lfg_init(&prng, 1);
-
-    ff_init_range_encoder(&c, b, SIZE);
-    ff_build_rac_states(&c, 0.05 * (1LL << 32), 128 + 64 + 32 + 16);
-
-    memset(state, 128, sizeof(state));
-
-    for (i = 0; i < SIZE; i++)
-        r[i] = av_lfg_get(&prng) % 7;
-
-    for (i = 0; i < SIZE; i++)
-        put_rac(&c, state, r[i] & 1);
-
-    ff_rac_terminate(&c);
-
-    ff_init_range_decoder(&c, b, SIZE);
-
-    memset(state, 128, sizeof(state));
-
-    for (i = 0; i < SIZE; i++)
-        if ((r[i] & 1) != get_rac(&c, state)) {
-            av_log(NULL, AV_LOG_ERROR, "rac failure at %d\n", i);
-            return 1;
-        }
-
-    return 0;
-}
-#endif /* TEST */