chasing indexing error

1 files changed, 0 insertions, 354 deletions

diff --git a/ffmpeg/libavcodec/qpeg.c b/ffmpeg/libavcodec/qpeg.c
deleted file mode 100644
index 94cb5bd..0000000
--- a/ffmpeg/libavcodec/qpeg.c
+++ /dev/null
@@ -1,354 +0,0 @@
-/*
- * QPEG codec
- * Copyright (c) 2004 Konstantin Shishkov
- *
- * 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
- * QPEG codec.
- */
-
-#include "avcodec.h"
-#include "bytestream.h"
-#include "internal.h"
-
-typedef struct QpegContext{
-    AVCodecContext *avctx;
-    AVFrame *pic, *ref;
-    uint32_t pal[256];
-    GetByteContext buffer;
-} QpegContext;
-
-static void qpeg_decode_intra(QpegContext *qctx, uint8_t *dst,
-                              int stride, int width, int height)
-{
-    int i;
-    int code;
-    int c0, c1;
-    int run, copy;
-    int filled = 0;
-    int rows_to_go;
-
-    rows_to_go = height;
-    height--;
-    dst = dst + height * stride;
-
-    while ((bytestream2_get_bytes_left(&qctx->buffer) > 0) && (rows_to_go > 0)) {
-        code = bytestream2_get_byte(&qctx->buffer);
-        run = copy = 0;
-        if(code == 0xFC) /* end-of-picture code */
-            break;
-        if(code >= 0xF8) { /* very long run */
-            c0 = bytestream2_get_byte(&qctx->buffer);
-            c1 = bytestream2_get_byte(&qctx->buffer);
-            run = ((code & 0x7) << 16) + (c0 << 8) + c1 + 2;
-        } else if (code >= 0xF0) { /* long run */
-            c0 = bytestream2_get_byte(&qctx->buffer);
-            run = ((code & 0xF) << 8) + c0 + 2;
-        } else if (code >= 0xE0) { /* short run */
-            run = (code & 0x1F) + 2;
-        } else if (code >= 0xC0) { /* very long copy */
-            c0 = bytestream2_get_byte(&qctx->buffer);
-            c1 = bytestream2_get_byte(&qctx->buffer);
-            copy = ((code & 0x3F) << 16) + (c0 << 8) + c1 + 1;
-        } else if (code >= 0x80) { /* long copy */
-            c0 = bytestream2_get_byte(&qctx->buffer);
-            copy = ((code & 0x7F) << 8) + c0 + 1;
-        } else { /* short copy */
-            copy = code + 1;
-        }
-
-        /* perform actual run or copy */
-        if(run) {
-            int p;
-
-            p = bytestream2_get_byte(&qctx->buffer);
-            for(i = 0; i < run; i++) {
-                dst[filled++] = p;
-                if (filled >= width) {
-                    filled = 0;
-                    dst -= stride;
-                    rows_to_go--;
-                    if(rows_to_go <= 0)
-                        break;
-                }
-            }
-        } else {
-            for(i = 0; i < copy; i++) {
-                dst[filled++] = bytestream2_get_byte(&qctx->buffer);
-                if (filled >= width) {
-                    filled = 0;
-                    dst -= stride;
-                    rows_to_go--;
-                    if(rows_to_go <= 0)
-                        break;
-                }
-            }
-        }
-    }
-}
-
-static const int qpeg_table_h[16] =
- { 0x00, 0x20, 0x20, 0x20, 0x18, 0x10, 0x10, 0x20, 0x10, 0x08, 0x18, 0x08, 0x08, 0x18, 0x10, 0x04};
-static const int qpeg_table_w[16] =
- { 0x00, 0x20, 0x18, 0x08, 0x18, 0x10, 0x20, 0x10, 0x08, 0x10, 0x20, 0x20, 0x08, 0x10, 0x18, 0x04};
-
-/* Decodes delta frames */
-static void av_noinline qpeg_decode_inter(QpegContext *qctx, uint8_t *dst,
-                              int stride, int width, int height,
-                              int delta, const uint8_t *ctable,
-                              uint8_t *refdata)
-{
-    int i, j;
-    int code;
-    int filled = 0;
-    int orig_height;
-
-    if(!refdata)
-        refdata= dst;
-
-    /* copy prev frame */
-    for(i = 0; i < height; i++)
-        memcpy(dst + (i * stride), refdata + (i * stride), width);
-
-    orig_height = height;
-    height--;
-    dst = dst + height * stride;
-
-    while ((bytestream2_get_bytes_left(&qctx->buffer) > 0) && (height >= 0)) {
-        code = bytestream2_get_byte(&qctx->buffer);
-
-        if(delta) {
-            /* motion compensation */
-            while(bytestream2_get_bytes_left(&qctx->buffer) > 0 && (code & 0xF0) == 0xF0) {
-                if(delta == 1) {
-                    int me_idx;
-                    int me_w, me_h, me_x, me_y;
-                    uint8_t *me_plane;
-                    int corr, val;
-
-                    /* get block size by index */
-                    me_idx = code & 0xF;
-                    me_w = qpeg_table_w[me_idx];
-                    me_h = qpeg_table_h[me_idx];
-
-                    /* extract motion vector */
-                    corr = bytestream2_get_byte(&qctx->buffer);
-
-                    val = corr >> 4;
-                    if(val > 7)
-                        val -= 16;
-                    me_x = val;
-
-                    val = corr & 0xF;
-                    if(val > 7)
-                        val -= 16;
-                    me_y = val;
-
-                    /* check motion vector */
-                    if ((me_x + filled < 0) || (me_x + me_w + filled > width) ||
-                       (height - me_y - me_h < 0) || (height - me_y > orig_height) ||
-                       (filled + me_w > width) || (height - me_h < 0))
-                        av_log(NULL, AV_LOG_ERROR, "Bogus motion vector (%i,%i), block size %ix%i at %i,%i\n",
-                               me_x, me_y, me_w, me_h, filled, height);
-                    else {
-                        /* do motion compensation */
-                        me_plane = refdata + (filled + me_x) + (height - me_y) * stride;
-                        for(j = 0; j < me_h; j++) {
-                            for(i = 0; i < me_w; i++)
-                                dst[filled + i - (j * stride)] = me_plane[i - (j * stride)];
-                        }
-                    }
-                }
-                code = bytestream2_get_byte(&qctx->buffer);
-            }
-        }
-
-        if(code == 0xE0) /* end-of-picture code */
-            break;
-        if(code > 0xE0) { /* run code: 0xE1..0xFF */
-            int p;
-
-            code &= 0x1F;
-            p = bytestream2_get_byte(&qctx->buffer);
-            for(i = 0; i <= code; i++) {
-                dst[filled++] = p;
-                if(filled >= width) {
-                    filled = 0;
-                    dst -= stride;
-                    height--;
-                    if (height < 0)
-                        break;
-                }
-            }
-        } else if(code >= 0xC0) { /* copy code: 0xC0..0xDF */
-            code &= 0x1F;
-
-            if(code + 1 > bytestream2_get_bytes_left(&qctx->buffer))
-                break;
-
-            for(i = 0; i <= code; i++) {
-                dst[filled++] = bytestream2_get_byte(&qctx->buffer);
-                if(filled >= width) {
-                    filled = 0;
-                    dst -= stride;
-                    height--;
-                    if (height < 0)
-                        break;
-                }
-            }
-        } else if(code >= 0x80) { /* skip code: 0x80..0xBF */
-            int skip;
-
-            code &= 0x3F;
-            /* codes 0x80 and 0x81 are actually escape codes,
-               skip value minus constant is in the next byte */
-            if(!code)
-                skip = bytestream2_get_byte(&qctx->buffer) +  64;
-            else if(code == 1)
-                skip = bytestream2_get_byte(&qctx->buffer) + 320;
-            else
-                skip = code;
-            filled += skip;
-            while( filled >= width) {
-                filled -= width;
-                dst -= stride;
-                height--;
-                if(height < 0)
-                    break;
-            }
-        } else {
-            /* zero code treated as one-pixel skip */
-            if(code) {
-                dst[filled++] = ctable[code & 0x7F];
-            }
-            else
-                filled++;
-            if(filled >= width) {
-                filled = 0;
-                dst -= stride;
-                height--;
-            }
-        }
-    }
-}
-
-static int decode_frame(AVCodecContext *avctx,
-                        void *data, int *got_frame,
-                        AVPacket *avpkt)
-{
-    uint8_t ctable[128];
-    QpegContext * const a = avctx->priv_data;
-    AVFrame * const p = a->pic;
-    AVFrame * const ref = a->ref;
-    uint8_t* outdata;
-    int delta, ret;
-    const uint8_t *pal = av_packet_get_side_data(avpkt, AV_PKT_DATA_PALETTE, NULL);
-
-    if (avpkt->size < 0x86) {
-        av_log(avctx, AV_LOG_ERROR, "Packet is too small\n");
-        return AVERROR_INVALIDDATA;
-    }
-
-    bytestream2_init(&a->buffer, avpkt->data, avpkt->size);
-
-    av_frame_unref(ref);
-    av_frame_move_ref(ref, p);
-
-    if ((ret = ff_get_buffer(avctx, p, AV_GET_BUFFER_FLAG_REF)) < 0)
-        return ret;
-    outdata = p->data[0];
-    bytestream2_skip(&a->buffer, 4);
-    bytestream2_get_buffer(&a->buffer, ctable, 128);
-    bytestream2_skip(&a->buffer, 1);
-
-    delta = bytestream2_get_byte(&a->buffer);
-    if(delta == 0x10) {
-        qpeg_decode_intra(a, outdata, p->linesize[0], avctx->width, avctx->height);
-    } else {
-        qpeg_decode_inter(a, outdata, p->linesize[0], avctx->width, avctx->height, delta, ctable, ref->data[0]);
-    }
-
-    /* make the palette available on the way out */
-    if (pal) {
-        p->palette_has_changed = 1;
-        memcpy(a->pal, pal, AVPALETTE_SIZE);
-    }
-    memcpy(p->data[1], a->pal, AVPALETTE_SIZE);
-
-    if ((ret = av_frame_ref(data, p)) < 0)
-        return ret;
-
-    *got_frame      = 1;
-
-    return avpkt->size;
-}
-
-static void decode_flush(AVCodecContext *avctx){
-    QpegContext * const a = avctx->priv_data;
-    int i, pal_size;
-    const uint8_t *pal_src;
-
-    pal_size = FFMIN(1024U, avctx->extradata_size);
-    pal_src = avctx->extradata + avctx->extradata_size - pal_size;
-
-    for (i=0; i<pal_size/4; i++)
-        a->pal[i] = 0xFFU<<24 | AV_RL32(pal_src+4*i);
-}
-
-static av_cold int decode_end(AVCodecContext *avctx)
-{
-    QpegContext * const a = avctx->priv_data;
-
-    av_frame_free(&a->pic);
-    av_frame_free(&a->ref);
-
-    return 0;
-}
-
-static av_cold int decode_init(AVCodecContext *avctx){
-    QpegContext * const a = avctx->priv_data;
-
-    a->avctx = avctx;
-    avctx->pix_fmt= AV_PIX_FMT_PAL8;
-
-    decode_flush(avctx);
-
-    a->pic = av_frame_alloc();
-    a->ref = av_frame_alloc();
-    if (!a->pic || !a->ref) {
-        decode_end(avctx);
-        return AVERROR(ENOMEM);
-    }
-
-    return 0;
-}
-
-AVCodec ff_qpeg_decoder = {
-    .name           = "qpeg",
-    .long_name      = NULL_IF_CONFIG_SMALL("Q-team QPEG"),
-    .type           = AVMEDIA_TYPE_VIDEO,
-    .id             = AV_CODEC_ID_QPEG,
-    .priv_data_size = sizeof(QpegContext),
-    .init           = decode_init,
-    .close          = decode_end,
-    .decode         = decode_frame,
-    .flush          = decode_flush,
-    .capabilities   = CODEC_CAP_DR1,
-};