chasing indexing error

1 files changed, 0 insertions, 828 deletions

diff --git a/ffmpeg/libavcodec/smacker.c b/ffmpeg/libavcodec/smacker.c
deleted file mode 100644
index cd342b9..0000000
--- a/ffmpeg/libavcodec/smacker.c
+++ /dev/null
@@ -1,828 +0,0 @@
-/*
- * Smacker decoder
- * Copyright (c) 2006 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
- * Smacker decoder
- */
-
-/*
- * Based on http://wiki.multimedia.cx/index.php?title=Smacker
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-
-#include "libavutil/channel_layout.h"
-#include "avcodec.h"
-#include "internal.h"
-#include "mathops.h"
-
-#define BITSTREAM_READER_LE
-#include "get_bits.h"
-#include "bytestream.h"
-
-#define SMKTREE_BITS 9
-#define SMK_NODE 0x80000000
-
-/*
- * Decoder context
- */
-typedef struct SmackVContext {
-    AVCodecContext *avctx;
-    AVFrame *pic;
-
-    int *mmap_tbl, *mclr_tbl, *full_tbl, *type_tbl;
-    int mmap_last[3], mclr_last[3], full_last[3], type_last[3];
-} SmackVContext;
-
-/**
- * Context used for code reconstructing
- */
-typedef struct HuffContext {
-    int length;
-    int maxlength;
-    int current;
-    uint32_t *bits;
-    int *lengths;
-    int *values;
-} HuffContext;
-
-/* common parameters used for decode_bigtree */
-typedef struct DBCtx {
-    VLC *v1, *v2;
-    int *recode1, *recode2;
-    int escapes[3];
-    int *last;
-    int lcur;
-} DBCtx;
-
-/* possible runs of blocks */
-static const int block_runs[64] = {
-      1,    2,    3,    4,    5,    6,    7,    8,
-      9,   10,   11,   12,   13,   14,   15,   16,
-     17,   18,   19,   20,   21,   22,   23,   24,
-     25,   26,   27,   28,   29,   30,   31,   32,
-     33,   34,   35,   36,   37,   38,   39,   40,
-     41,   42,   43,   44,   45,   46,   47,   48,
-     49,   50,   51,   52,   53,   54,   55,   56,
-     57,   58,   59,  128,  256,  512, 1024, 2048 };
-
-enum SmkBlockTypes {
-    SMK_BLK_MONO = 0,
-    SMK_BLK_FULL = 1,
-    SMK_BLK_SKIP = 2,
-    SMK_BLK_FILL = 3 };
-
-/**
- * Decode local frame tree
- */
-static int smacker_decode_tree(GetBitContext *gb, HuffContext *hc, uint32_t prefix, int length)
-{
-    if(length > 32 || length > 3*SMKTREE_BITS) {
-        av_log(NULL, AV_LOG_ERROR, "length too long\n");
-        return AVERROR_INVALIDDATA;
-    }
-    if(!get_bits1(gb)){ //Leaf
-        if(hc->current >= hc->length){
-            av_log(NULL, AV_LOG_ERROR, "Tree size exceeded!\n");
-            return AVERROR_INVALIDDATA;
-        }
-        if(length){
-            hc->bits[hc->current] = prefix;
-            hc->lengths[hc->current] = length;
-        } else {
-            hc->bits[hc->current] = 0;
-            hc->lengths[hc->current] = 0;
-        }
-        hc->values[hc->current] = get_bits(gb, 8);
-        hc->current++;
-        if(hc->maxlength < length)
-            hc->maxlength = length;
-        return 0;
-    } else { //Node
-        int r;
-        length++;
-        r = smacker_decode_tree(gb, hc, prefix, length);
-        if(r)
-            return r;
-        return smacker_decode_tree(gb, hc, prefix | (1 << (length - 1)), length);
-    }
-}
-
-/**
- * Decode header tree
- */
-static int smacker_decode_bigtree(GetBitContext *gb, HuffContext *hc, DBCtx *ctx)
-{
-    if (hc->current + 1 >= hc->length) {
-        av_log(NULL, AV_LOG_ERROR, "Tree size exceeded!\n");
-        return AVERROR_INVALIDDATA;
-    }
-    if(!get_bits1(gb)){ //Leaf
-        int val, i1, i2;
-        i1 = ctx->v1->table ? get_vlc2(gb, ctx->v1->table, SMKTREE_BITS, 3) : 0;
-        i2 = ctx->v2->table ? get_vlc2(gb, ctx->v2->table, SMKTREE_BITS, 3) : 0;
-        if (i1 < 0 || i2 < 0)
-            return AVERROR_INVALIDDATA;
-        val = ctx->recode1[i1] | (ctx->recode2[i2] << 8);
-        if(val == ctx->escapes[0]) {
-            ctx->last[0] = hc->current;
-            val = 0;
-        } else if(val == ctx->escapes[1]) {
-            ctx->last[1] = hc->current;
-            val = 0;
-        } else if(val == ctx->escapes[2]) {
-            ctx->last[2] = hc->current;
-            val = 0;
-        }
-
-        hc->values[hc->current++] = val;
-        return 1;
-    } else { //Node
-        int r = 0, r_new, t;
-
-        t = hc->current++;
-        r = smacker_decode_bigtree(gb, hc, ctx);
-        if(r < 0)
-            return r;
-        hc->values[t] = SMK_NODE | r;
-        r++;
-        r_new = smacker_decode_bigtree(gb, hc, ctx);
-        if (r_new < 0)
-            return r_new;
-        return r + r_new;
-    }
-}
-
-/**
- * Store large tree as FFmpeg's vlc codes
- */
-static int smacker_decode_header_tree(SmackVContext *smk, GetBitContext *gb, int **recodes, int *last, int size)
-{
-    int res;
-    HuffContext huff;
-    HuffContext tmp1, tmp2;
-    VLC vlc[2] = { { 0 } };
-    int escapes[3];
-    DBCtx ctx;
-    int err = 0;
-
-    if(size >= UINT_MAX>>4){ // (((size + 3) >> 2) + 3) << 2 must not overflow
-        av_log(smk->avctx, AV_LOG_ERROR, "size too large\n");
-        return AVERROR_INVALIDDATA;
-    }
-
-    tmp1.length = 256;
-    tmp1.maxlength = 0;
-    tmp1.current = 0;
-    tmp1.bits = av_mallocz(256 * 4);
-    tmp1.lengths = av_mallocz(256 * sizeof(int));
-    tmp1.values = av_mallocz(256 * sizeof(int));
-
-    tmp2.length = 256;
-    tmp2.maxlength = 0;
-    tmp2.current = 0;
-    tmp2.bits = av_mallocz(256 * 4);
-    tmp2.lengths = av_mallocz(256 * sizeof(int));
-    tmp2.values = av_mallocz(256 * sizeof(int));
-    if (!tmp1.bits || !tmp1.lengths || !tmp1.values ||
-        !tmp2.bits || !tmp2.lengths || !tmp2.values) {
-        err = AVERROR(ENOMEM);
-        goto error;
-    }
-
-    if(get_bits1(gb)) {
-        res = smacker_decode_tree(gb, &tmp1, 0, 0);
-        if (res < 0) {
-            err = res;
-            goto error;
-        }
-        skip_bits1(gb);
-        if(tmp1.current > 1) {
-            res = init_vlc(&vlc[0], SMKTREE_BITS, tmp1.length,
-                        tmp1.lengths, sizeof(int), sizeof(int),
-                        tmp1.bits, sizeof(uint32_t), sizeof(uint32_t), INIT_VLC_LE);
-            if(res < 0) {
-                av_log(smk->avctx, AV_LOG_ERROR, "Cannot build VLC table\n");
-                err = res;
-                goto error;
-            }
-        }
-    }
-    if (!vlc[0].table) {
-        av_log(smk->avctx, AV_LOG_ERROR, "Skipping low bytes tree\n");
-    }
-    if(get_bits1(gb)){
-        res = smacker_decode_tree(gb, &tmp2, 0, 0);
-        if (res < 0) {
-            err = res;
-            goto error;
-        }
-        skip_bits1(gb);
-        if(tmp2.current > 1) {
-            res = init_vlc(&vlc[1], SMKTREE_BITS, tmp2.length,
-                        tmp2.lengths, sizeof(int), sizeof(int),
-                        tmp2.bits, sizeof(uint32_t), sizeof(uint32_t), INIT_VLC_LE);
-            if(res < 0) {
-                av_log(smk->avctx, AV_LOG_ERROR, "Cannot build VLC table\n");
-                err = res;
-                goto error;
-            }
-        }
-    }
-    if (!vlc[1].table) {
-        av_log(smk->avctx, AV_LOG_ERROR, "Skipping high bytes tree\n");
-    }
-
-    escapes[0]  = get_bits(gb, 16);
-    escapes[1]  = get_bits(gb, 16);
-    escapes[2]  = get_bits(gb, 16);
-
-    last[0] = last[1] = last[2] = -1;
-
-    ctx.escapes[0] = escapes[0];
-    ctx.escapes[1] = escapes[1];
-    ctx.escapes[2] = escapes[2];
-    ctx.v1 = &vlc[0];
-    ctx.v2 = &vlc[1];
-    ctx.recode1 = tmp1.values;
-    ctx.recode2 = tmp2.values;
-    ctx.last = last;
-
-    huff.length = ((size + 3) >> 2) + 4;
-    huff.maxlength = 0;
-    huff.current = 0;
-    huff.values = av_mallocz(huff.length * sizeof(int));
-    if (!huff.values) {
-        err = AVERROR(ENOMEM);
-        goto error;
-    }
-
-    if (smacker_decode_bigtree(gb, &huff, &ctx) < 0)
-        err = -1;
-    skip_bits1(gb);
-    if(ctx.last[0] == -1) ctx.last[0] = huff.current++;
-    if(ctx.last[1] == -1) ctx.last[1] = huff.current++;
-    if(ctx.last[2] == -1) ctx.last[2] = huff.current++;
-    if (ctx.last[0] >= huff.length ||
-        ctx.last[1] >= huff.length ||
-        ctx.last[2] >= huff.length) {
-        av_log(smk->avctx, AV_LOG_ERROR, "Huffman codes out of range\n");
-        err = AVERROR_INVALIDDATA;
-    }
-
-    *recodes = huff.values;
-
-error:
-    if(vlc[0].table)
-        ff_free_vlc(&vlc[0]);
-    if(vlc[1].table)
-        ff_free_vlc(&vlc[1]);
-    av_free(tmp1.bits);
-    av_free(tmp1.lengths);
-    av_free(tmp1.values);
-    av_free(tmp2.bits);
-    av_free(tmp2.lengths);
-    av_free(tmp2.values);
-
-    return err;
-}
-
-static int decode_header_trees(SmackVContext *smk) {
-    GetBitContext gb;
-    int mmap_size, mclr_size, full_size, type_size, ret;
-
-    mmap_size = AV_RL32(smk->avctx->extradata);
-    mclr_size = AV_RL32(smk->avctx->extradata + 4);
-    full_size = AV_RL32(smk->avctx->extradata + 8);
-    type_size = AV_RL32(smk->avctx->extradata + 12);
-
-    init_get_bits8(&gb, smk->avctx->extradata + 16, smk->avctx->extradata_size - 16);
-
-    if(!get_bits1(&gb)) {
-        av_log(smk->avctx, AV_LOG_INFO, "Skipping MMAP tree\n");
-        smk->mmap_tbl = av_malloc(sizeof(int) * 2);
-        if (!smk->mmap_tbl)
-            return AVERROR(ENOMEM);
-        smk->mmap_tbl[0] = 0;
-        smk->mmap_last[0] = smk->mmap_last[1] = smk->mmap_last[2] = 1;
-    } else {
-        ret = smacker_decode_header_tree(smk, &gb, &smk->mmap_tbl, smk->mmap_last, mmap_size);
-        if (ret < 0)
-            return ret;
-    }
-    if(!get_bits1(&gb)) {
-        av_log(smk->avctx, AV_LOG_INFO, "Skipping MCLR tree\n");
-        smk->mclr_tbl = av_malloc(sizeof(int) * 2);
-        if (!smk->mclr_tbl)
-            return AVERROR(ENOMEM);
-        smk->mclr_tbl[0] = 0;
-        smk->mclr_last[0] = smk->mclr_last[1] = smk->mclr_last[2] = 1;
-    } else {
-        ret = smacker_decode_header_tree(smk, &gb, &smk->mclr_tbl, smk->mclr_last, mclr_size);
-        if (ret < 0)
-            return ret;
-    }
-    if(!get_bits1(&gb)) {
-        av_log(smk->avctx, AV_LOG_INFO, "Skipping FULL tree\n");
-        smk->full_tbl = av_malloc(sizeof(int) * 2);
-        if (!smk->full_tbl)
-            return AVERROR(ENOMEM);
-        smk->full_tbl[0] = 0;
-        smk->full_last[0] = smk->full_last[1] = smk->full_last[2] = 1;
-    } else {
-        ret = smacker_decode_header_tree(smk, &gb, &smk->full_tbl, smk->full_last, full_size);
-        if (ret < 0)
-            return ret;
-    }
-    if(!get_bits1(&gb)) {
-        av_log(smk->avctx, AV_LOG_INFO, "Skipping TYPE tree\n");
-        smk->type_tbl = av_malloc(sizeof(int) * 2);
-        if (!smk->type_tbl)
-            return AVERROR(ENOMEM);
-        smk->type_tbl[0] = 0;
-        smk->type_last[0] = smk->type_last[1] = smk->type_last[2] = 1;
-    } else {
-        ret = smacker_decode_header_tree(smk, &gb, &smk->type_tbl, smk->type_last, type_size);
-        if (ret < 0)
-            return ret;
-    }
-
-    return 0;
-}
-
-static av_always_inline void last_reset(int *recode, int *last) {
-    recode[last[0]] = recode[last[1]] = recode[last[2]] = 0;
-}
-
-/* get code and update history */
-static av_always_inline int smk_get_code(GetBitContext *gb, int *recode, int *last) {
-    register int *table = recode;
-    int v;
-
-    while(*table & SMK_NODE) {
-        if(get_bits1(gb))
-            table += (*table) & (~SMK_NODE);
-        table++;
-    }
-    v = *table;
-
-    if(v != recode[last[0]]) {
-        recode[last[2]] = recode[last[1]];
-        recode[last[1]] = recode[last[0]];
-        recode[last[0]] = v;
-    }
-    return v;
-}
-
-static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
-                        AVPacket *avpkt)
-{
-    SmackVContext * const smk = avctx->priv_data;
-    uint8_t *out;
-    uint32_t *pal;
-    GetByteContext gb2;
-    GetBitContext gb;
-    int blocks, blk, bw, bh;
-    int i, ret;
-    int stride;
-    int flags;
-
-    if (avpkt->size <= 769)
-        return AVERROR_INVALIDDATA;
-
-    if ((ret = ff_reget_buffer(avctx, smk->pic)) < 0)
-        return ret;
-
-    /* make the palette available on the way out */
-    pal = (uint32_t*)smk->pic->data[1];
-    bytestream2_init(&gb2, avpkt->data, avpkt->size);
-    flags = bytestream2_get_byteu(&gb2);
-    smk->pic->palette_has_changed = flags & 1;
-    smk->pic->key_frame = !!(flags & 2);
-    if (smk->pic->key_frame)
-        smk->pic->pict_type = AV_PICTURE_TYPE_I;
-    else
-        smk->pic->pict_type = AV_PICTURE_TYPE_P;
-
-    for(i = 0; i < 256; i++)
-        *pal++ = 0xFFU << 24 | bytestream2_get_be24u(&gb2);
-
-    last_reset(smk->mmap_tbl, smk->mmap_last);
-    last_reset(smk->mclr_tbl, smk->mclr_last);
-    last_reset(smk->full_tbl, smk->full_last);
-    last_reset(smk->type_tbl, smk->type_last);
-    if ((ret = init_get_bits8(&gb, avpkt->data + 769, avpkt->size - 769)) < 0)
-        return ret;
-
-    blk = 0;
-    bw = avctx->width >> 2;
-    bh = avctx->height >> 2;
-    blocks = bw * bh;
-    out = smk->pic->data[0];
-    stride = smk->pic->linesize[0];
-    while(blk < blocks) {
-        int type, run, mode;
-        uint16_t pix;
-
-        type = smk_get_code(&gb, smk->type_tbl, smk->type_last);
-        run = block_runs[(type >> 2) & 0x3F];
-        switch(type & 3){
-        case SMK_BLK_MONO:
-            while(run-- && blk < blocks){
-                int clr, map;
-                int hi, lo;
-                clr = smk_get_code(&gb, smk->mclr_tbl, smk->mclr_last);
-                map = smk_get_code(&gb, smk->mmap_tbl, smk->mmap_last);
-                out = smk->pic->data[0] + (blk / bw) * (stride * 4) + (blk % bw) * 4;
-                hi = clr >> 8;
-                lo = clr & 0xFF;
-                for(i = 0; i < 4; i++) {
-                    if(map & 1) out[0] = hi; else out[0] = lo;
-                    if(map & 2) out[1] = hi; else out[1] = lo;
-                    if(map & 4) out[2] = hi; else out[2] = lo;
-                    if(map & 8) out[3] = hi; else out[3] = lo;
-                    map >>= 4;
-                    out += stride;
-                }
-                blk++;
-            }
-            break;
-        case SMK_BLK_FULL:
-            mode = 0;
-            if(avctx->codec_tag == MKTAG('S', 'M', 'K', '4')) { // In case of Smacker v4 we have three modes
-                if(get_bits1(&gb)) mode = 1;
-                else if(get_bits1(&gb)) mode = 2;
-            }
-            while(run-- && blk < blocks){
-                out = smk->pic->data[0] + (blk / bw) * (stride * 4) + (blk % bw) * 4;
-                switch(mode){
-                case 0:
-                    for(i = 0; i < 4; i++) {
-                        pix = smk_get_code(&gb, smk->full_tbl, smk->full_last);
-                        AV_WL16(out+2,pix);
-                        pix = smk_get_code(&gb, smk->full_tbl, smk->full_last);
-                        AV_WL16(out,pix);
-                        out += stride;
-                    }
-                    break;
-                case 1:
-                    pix = smk_get_code(&gb, smk->full_tbl, smk->full_last);
-                    out[0] = out[1] = pix & 0xFF;
-                    out[2] = out[3] = pix >> 8;
-                    out += stride;
-                    out[0] = out[1] = pix & 0xFF;
-                    out[2] = out[3] = pix >> 8;
-                    out += stride;
-                    pix = smk_get_code(&gb, smk->full_tbl, smk->full_last);
-                    out[0] = out[1] = pix & 0xFF;
-                    out[2] = out[3] = pix >> 8;
-                    out += stride;
-                    out[0] = out[1] = pix & 0xFF;
-                    out[2] = out[3] = pix >> 8;
-                    out += stride;
-                    break;
-                case 2:
-                    for(i = 0; i < 2; i++) {
-                        uint16_t pix1, pix2;
-                        pix2 = smk_get_code(&gb, smk->full_tbl, smk->full_last);
-                        pix1 = smk_get_code(&gb, smk->full_tbl, smk->full_last);
-                        AV_WL16(out,pix1);
-                        AV_WL16(out+2,pix2);
-                        out += stride;
-                        AV_WL16(out,pix1);
-                        AV_WL16(out+2,pix2);
-                        out += stride;
-                    }
-                    break;
-                }
-                blk++;
-            }
-            break;
-        case SMK_BLK_SKIP:
-            while(run-- && blk < blocks)
-                blk++;
-            break;
-        case SMK_BLK_FILL:
-            mode = type >> 8;
-            while(run-- && blk < blocks){
-                uint32_t col;
-                out = smk->pic->data[0] + (blk / bw) * (stride * 4) + (blk % bw) * 4;
-                col = mode * 0x01010101;
-                for(i = 0; i < 4; i++) {
-                    *((uint32_t*)out) = col;
-                    out += stride;
-                }
-                blk++;
-            }
-            break;
-        }
-
-    }
-
-    if ((ret = av_frame_ref(data, smk->pic)) < 0)
-        return ret;
-
-    *got_frame = 1;
-
-    /* always report that the buffer was completely consumed */
-    return avpkt->size;
-}
-
-
-
-/*
- *
- * Uninit smacker decoder
- *
- */
-static av_cold int decode_end(AVCodecContext *avctx)
-{
-    SmackVContext * const smk = avctx->priv_data;
-
-    av_freep(&smk->mmap_tbl);
-    av_freep(&smk->mclr_tbl);
-    av_freep(&smk->full_tbl);
-    av_freep(&smk->type_tbl);
-
-    av_frame_free(&smk->pic);
-
-    return 0;
-}
-
-
-/*
- *
- * Init smacker decoder
- *
- */
-static av_cold int decode_init(AVCodecContext *avctx)
-{
-    SmackVContext * const c = avctx->priv_data;
-    int ret;
-
-    c->avctx = avctx;
-
-    avctx->pix_fmt = AV_PIX_FMT_PAL8;
-
-    c->pic = av_frame_alloc();
-    if (!c->pic)
-        return AVERROR(ENOMEM);
-
-    /* decode huffman trees from extradata */
-    if(avctx->extradata_size < 16){
-        av_log(avctx, AV_LOG_ERROR, "Extradata missing!\n");
-        return AVERROR(EINVAL);
-    }
-
-    ret = decode_header_trees(c);
-    if (ret < 0) {
-        decode_end(avctx);
-        return ret;
-    }
-
-    return 0;
-}
-
-
-static av_cold int smka_decode_init(AVCodecContext *avctx)
-{
-    if (avctx->channels < 1 || avctx->channels > 2) {
-        av_log(avctx, AV_LOG_ERROR, "invalid number of channels\n");
-        return AVERROR(EINVAL);
-    }
-    avctx->channel_layout = (avctx->channels==2) ? AV_CH_LAYOUT_STEREO : AV_CH_LAYOUT_MONO;
-    avctx->sample_fmt = avctx->bits_per_coded_sample == 8 ? AV_SAMPLE_FMT_U8 : AV_SAMPLE_FMT_S16;
-
-    return 0;
-}
-
-/**
- * Decode Smacker audio data
- */
-static int smka_decode_frame(AVCodecContext *avctx, void *data,
-                             int *got_frame_ptr, AVPacket *avpkt)
-{
-    AVFrame *frame     = data;
-    const uint8_t *buf = avpkt->data;
-    int buf_size = avpkt->size;
-    GetBitContext gb;
-    HuffContext h[4] = { { 0 } };
-    VLC vlc[4]       = { { 0 } };
-    int16_t *samples;
-    uint8_t *samples8;
-    int val;
-    int i, res, ret;
-    int unp_size;
-    int bits, stereo;
-    int pred[2] = {0, 0};
-
-    if (buf_size <= 4) {
-        av_log(avctx, AV_LOG_ERROR, "packet is too small\n");
-        return AVERROR(EINVAL);
-    }
-
-    unp_size = AV_RL32(buf);
-
-    if (unp_size > (1U<<24)) {
-        av_log(avctx, AV_LOG_ERROR, "packet is too big\n");
-        return AVERROR_INVALIDDATA;
-    }
-
-    if ((ret = init_get_bits8(&gb, buf + 4, buf_size - 4)) < 0)
-        return ret;
-
-    if(!get_bits1(&gb)){
-        av_log(avctx, AV_LOG_INFO, "Sound: no data\n");
-        *got_frame_ptr = 0;
-        return 1;
-    }
-    stereo = get_bits1(&gb);
-    bits = get_bits1(&gb);
-    if (stereo ^ (avctx->channels != 1)) {
-        av_log(avctx, AV_LOG_ERROR, "channels mismatch\n");
-        return AVERROR(EINVAL);
-    }
-    if (bits == (avctx->sample_fmt == AV_SAMPLE_FMT_U8)) {
-        av_log(avctx, AV_LOG_ERROR, "sample format mismatch\n");
-        return AVERROR(EINVAL);
-    }
-
-    /* get output buffer */
-    frame->nb_samples = unp_size / (avctx->channels * (bits + 1));
-    if ((ret = ff_get_buffer(avctx, frame, 0)) < 0)
-        return ret;
-    samples  = (int16_t *)frame->data[0];
-    samples8 =            frame->data[0];
-
-    // Initialize
-    for(i = 0; i < (1 << (bits + stereo)); i++) {
-        h[i].length = 256;
-        h[i].maxlength = 0;
-        h[i].current = 0;
-        h[i].bits = av_mallocz(256 * 4);
-        h[i].lengths = av_mallocz(256 * sizeof(int));
-        h[i].values = av_mallocz(256 * sizeof(int));
-        if (!h[i].bits || !h[i].lengths || !h[i].values) {
-            ret = AVERROR(ENOMEM);
-            goto error;
-        }
-        skip_bits1(&gb);
-        if (smacker_decode_tree(&gb, &h[i], 0, 0) < 0) {
-            ret = AVERROR_INVALIDDATA;
-            goto error;
-        }
-        skip_bits1(&gb);
-        if(h[i].current > 1) {
-            res = init_vlc(&vlc[i], SMKTREE_BITS, h[i].length,
-                    h[i].lengths, sizeof(int), sizeof(int),
-                    h[i].bits, sizeof(uint32_t), sizeof(uint32_t), INIT_VLC_LE);
-            if(res < 0) {
-                av_log(avctx, AV_LOG_ERROR, "Cannot build VLC table\n");
-                ret = AVERROR_INVALIDDATA;
-                goto error;
-            }
-        }
-    }
-    /* this codec relies on wraparound instead of clipping audio */
-    if(bits) { //decode 16-bit data
-        for(i = stereo; i >= 0; i--)
-            pred[i] = sign_extend(av_bswap16(get_bits(&gb, 16)), 16);
-        for(i = 0; i <= stereo; i++)
-            *samples++ = pred[i];
-        for(; i < unp_size / 2; i++) {
-            if(get_bits_left(&gb)<0)
-                return AVERROR_INVALIDDATA;
-            if(i & stereo) {
-                if(vlc[2].table)
-                    res = get_vlc2(&gb, vlc[2].table, SMKTREE_BITS, 3);
-                else
-                    res = 0;
-                if (res < 0) {
-                    av_log(avctx, AV_LOG_ERROR, "invalid vlc\n");
-                    return AVERROR_INVALIDDATA;
-                }
-                val  = h[2].values[res];
-                if(vlc[3].table)
-                    res = get_vlc2(&gb, vlc[3].table, SMKTREE_BITS, 3);
-                else
-                    res = 0;
-                if (res < 0) {
-                    av_log(avctx, AV_LOG_ERROR, "invalid vlc\n");
-                    return AVERROR_INVALIDDATA;
-                }
-                val |= h[3].values[res] << 8;
-                pred[1] += sign_extend(val, 16);
-                *samples++ = pred[1];
-            } else {
-                if(vlc[0].table)
-                    res = get_vlc2(&gb, vlc[0].table, SMKTREE_BITS, 3);
-                else
-                    res = 0;
-                if (res < 0) {
-                    av_log(avctx, AV_LOG_ERROR, "invalid vlc\n");
-                    return AVERROR_INVALIDDATA;
-                }
-                val  = h[0].values[res];
-                if(vlc[1].table)
-                    res = get_vlc2(&gb, vlc[1].table, SMKTREE_BITS, 3);
-                else
-                    res = 0;
-                if (res < 0) {
-                    av_log(avctx, AV_LOG_ERROR, "invalid vlc\n");
-                    return AVERROR_INVALIDDATA;
-                }
-                val |= h[1].values[res] << 8;
-                pred[0] += sign_extend(val, 16);
-                *samples++ = pred[0];
-            }
-        }
-    } else { //8-bit data
-        for(i = stereo; i >= 0; i--)
-            pred[i] = get_bits(&gb, 8);
-        for(i = 0; i <= stereo; i++)
-            *samples8++ = pred[i];
-        for(; i < unp_size; i++) {
-            if(get_bits_left(&gb)<0)
-                return AVERROR_INVALIDDATA;
-            if(i & stereo){
-                if(vlc[1].table)
-                    res = get_vlc2(&gb, vlc[1].table, SMKTREE_BITS, 3);
-                else
-                    res = 0;
-                if (res < 0) {
-                    av_log(avctx, AV_LOG_ERROR, "invalid vlc\n");
-                    return AVERROR_INVALIDDATA;
-                }
-                pred[1] += sign_extend(h[1].values[res], 8);
-                *samples8++ = pred[1];
-            } else {
-                if(vlc[0].table)
-                    res = get_vlc2(&gb, vlc[0].table, SMKTREE_BITS, 3);
-                else
-                    res = 0;
-                if (res < 0) {
-                    av_log(avctx, AV_LOG_ERROR, "invalid vlc\n");
-                    return AVERROR_INVALIDDATA;
-                }
-                pred[0] += sign_extend(h[0].values[res], 8);
-                *samples8++ = pred[0];
-            }
-        }
-    }
-
-    *got_frame_ptr = 1;
-    ret = buf_size;
-
-error:
-    for(i = 0; i < 4; i++) {
-        if(vlc[i].table)
-            ff_free_vlc(&vlc[i]);
-        av_free(h[i].bits);
-        av_free(h[i].lengths);
-        av_free(h[i].values);
-    }
-
-    return ret;
-}
-
-AVCodec ff_smacker_decoder = {
-    .name           = "smackvid",
-    .long_name      = NULL_IF_CONFIG_SMALL("Smacker video"),
-    .type           = AVMEDIA_TYPE_VIDEO,
-    .id             = AV_CODEC_ID_SMACKVIDEO,
-    .priv_data_size = sizeof(SmackVContext),
-    .init           = decode_init,
-    .close          = decode_end,
-    .decode         = decode_frame,
-    .capabilities   = CODEC_CAP_DR1,
-};
-
-AVCodec ff_smackaud_decoder = {
-    .name           = "smackaud",
-    .long_name      = NULL_IF_CONFIG_SMALL("Smacker audio"),
-    .type           = AVMEDIA_TYPE_AUDIO,
-    .id             = AV_CODEC_ID_SMACKAUDIO,
-    .init           = smka_decode_init,
-    .decode         = smka_decode_frame,
-    .capabilities   = CODEC_CAP_DR1,
-};