[FFmpeg-devel] [Toy] LucasArts SMUSH demuxer and decoder

Kostya kostya.shishkov
Thu Jan 29 09:47:58 CET 2009


Again, for the record and not for review.

I just took very old patch and extended it to decode palettized LucasArts FMVs
from the games like Full Throttle, Curse of Monkey Island, The Dig, etc.

I would be glad if somebody pick and finish it (there are minor glitches during
decoding and fade in/fade out scenes are rendered as madly flipping frames
instead; oh, and the code style is rather bad).
-------------- next part --------------
Index: libavcodec/Makefile
===================================================================
--- libavcodec/Makefile	(revision 16395)
+++ libavcodec/Makefile	(working copy)
@@ -180,6 +181,7 @@
 OBJS-$(CONFIG_RV20_ENCODER)            += rv10.o mpegvideo_enc.o motion_est.o ratecontrol.o h263.o mpeg12data.o mpegvideo.o error_resilience.o
 OBJS-$(CONFIG_RV30_DECODER)            += rv30.o rv34.o h264pred.o rv30dsp.o
 OBJS-$(CONFIG_RV40_DECODER)            += rv40.o rv34.o h264pred.o rv40dsp.o
+OBJS-$(CONFIG_SANM_DECODER)            += sanm.o
 OBJS-$(CONFIG_SGI_DECODER)             += sgidec.o
 OBJS-$(CONFIG_SGI_ENCODER)             += sgienc.o rle.o
 OBJS-$(CONFIG_SHORTEN_DECODER)         += shorten.o
Index: libavcodec/sanm.c
===================================================================
--- libavcodec/sanm.c	(revision 0)
+++ libavcodec/sanm.c	(revision 0)
@@ -0,0 +1,1381 @@
+/*
+ * LucasArts Smush v2 decoder
+ * Copyright (c) 2006 Cyril Zorin
+ * <firstname dot lastname at gmail dot com>
+ *
+ * This library 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 of the License, or (at your option) any later version.
+ *
+ * This library 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 this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ */
+
+/**
+ * @file sanm.c
+ * LucasArts Smush v2 decoder
+ */
+
+/*
+ * Based on http://wiki.multimedia.cx/index.php?title=SANM
+ */
+
+#include "avcodec.h"
+#include "bytestream.h"
+
+#define GLYPH_COORD_VECT_SIZE 16
+static const int8_t glyph4_x[GLYPH_COORD_VECT_SIZE] = { 0, 1, 2, 3, 3, 3, 3, 2, 1, 0, 0, 0, 1, 2, 2, 1 };
+static const int8_t glyph4_y[GLYPH_COORD_VECT_SIZE] = { 0, 0, 0, 0, 1, 2, 3, 3, 3, 3, 2, 1, 1, 1, 2, 2 };
+static const int8_t glyph8_x[GLYPH_COORD_VECT_SIZE] = { 0, 2, 5, 7, 7, 7, 7, 7, 7, 5, 2, 0, 0, 0, 0, 0 };
+static const int8_t glyph8_y[GLYPH_COORD_VECT_SIZE] = { 0, 0, 0, 0, 1, 3, 4, 6, 7, 7, 7, 7, 6, 4, 3, 1 };
+
+static const int8_t motion_vectors[256][2] =
+{
+    {0,   0}, {-1, -43}, {6, -43},  {-9, -42},  {13, -41},
+    {-16, -40},  {19, -39}, {-23, -36},  {26, -34},  {-2, -33},
+    {4, -33}, {-29, -32},  {-9, -32},  {11, -31}, {-16, -29},
+    {32, -29},  {18, -28}, {-34, -26}, {-22, -25},  {-1, -25},
+    {3, -25},  {-7, -24},   {8, -24},  {24, -23},  {36, -23},
+    {-12, -22},  {13, -21}, {-38, -20},   {0, -20}, {-27, -19},
+    {-4, -19},   {4, -19}, {-17, -18},  {-8, -17},   {8, -17},
+    {18, -17},  {28, -17},  {39, -17}, {-12, -15},  {12, -15},
+    {-21, -14},  {-1, -14},   {1, -14}, {-41, -13},  {-5, -13},
+    {5, -13},  {21, -13}, {-31, -12}, {-15, -11},  {-8, -11},
+    {8, -11},  {15, -11},  {-2, -10},   {1, -10},  {31, -10},
+    {-23,  -9}, {-11,  -9},  {-5,  -9},   {4,  -9},  {11,  -9},
+    {42,  -9},   {6,  -8},  {24,  -8}, {-18,  -7},  {-7,  -7},
+    {-3,  -7},  {-1,  -7},   {2,  -7},  {18,  -7}, {-43,  -6},
+    {-13,  -6},  {-4,  -6},   {4,  -6},   {8,  -6}, {-33,  -5},
+    {-9,  -5},  {-2,  -5},   {0,  -5},   {2,  -5},   {5,  -5},
+    {13,  -5}, {-25,  -4},  {-6,  -4},  {-3,  -4},   {3,  -4},
+    {9,  -4}, {-19,  -3},  {-7,  -3},  {-4,  -3},  {-2,  -3},
+    {-1,  -3},   {0,  -3},   {1,  -3},   {2,  -3},   {4,  -3},
+    {6,  -3},  {33,  -3}, {-14,  -2}, {-10,  -2},  {-5,  -2},
+    {-3,  -2},  {-2,  -2},  {-1,  -2},   {0,  -2},   {1,  -2},
+    {2,  -2},   {3,  -2},   {5,  -2},   {7,  -2},  {14,  -2},
+    {19,  -2},  {25,  -2},  {43,  -2},  {-7,  -1},  {-3,  -1},
+    {-2,  -1},  {-1,  -1},   {0,  -1},   {1,  -1},   {2,  -1},
+    {3,  -1},  {10,  -1},  {-5,   0},  {-3,   0},  {-2,   0},
+    {-1,   0},   {1,   0},   {2,   0},   {3,   0},   {5,   0},
+    {7,   0}, {-10,   1},  {-7,   1},  {-3,   1},  {-2,   1},
+    {-1,   1},   {0,   1},   {1,   1},   {2,   1},   {3,   1},
+    {-43,   2}, {-25,   2}, {-19,   2}, {-14,   2},  {-5,   2},
+    {-3,   2},  {-2,   2},  {-1,   2},   {0,   2},   {1,   2},
+    {2,   2},   {3,   2},   {5,   2},   {7,   2},  {10,   2},
+    {14,   2}, {-33,   3},  {-6,   3},  {-4,   3},  {-2,   3},
+    {-1,   3},   {0,   3},   {1,   3},   {2,   3},   {4,   3},
+    {19,   3},  {-9,   4},  {-3,   4},   {3,   4},   {7,   4},
+    {25,   4}, {-13,   5},  {-5,   5},  {-2,   5},   {0,   5},
+    {2,   5},   {5,   5},   {9,   5},  {33,   5},  {-8,   6},
+    {-4,   6},   {4,   6},  {13,   6},  {43,   6}, {-18,   7},
+    {-2,   7},   {0,   7},   {2,   7},   {7,   7},  {18,   7},
+    {-24,   8},  {-6,   8}, {-42,   9}, {-11,   9},  {-4,   9},
+    {5,   9},  {11,   9},  {23,   9}, {-31,  10},  {-1,  10},
+    {2,  10}, {-15,  11},  {-8,  11},   {8,  11},  {15,  11},
+    {31,  12}, {-21,  13},  {-5,  13},   {5,  13},  {41,  13},
+    {-1,  14},   {1,  14},  {21,  14}, {-12,  15},  {12,  15},
+    {-39,  17}, {-28,  17}, {-18,  17},  {-8,  17},   {8,  17},
+    {17,  18},  {-4,  19},   {0,  19},   {4,  19},  {27,  19},
+    {38,  20}, {-13,  21},  {12,  22}, {-36,  23}, {-24,  23},
+    {-8,  24},   {7,  24},  {-3,  25},   {1,  25},  {22,  25},
+    {34,  26}, {-18,  28}, {-32,  29},  {16,  29}, {-11,  31},
+    {9,  32},  {29,  32},  {-4,  33},   {2,  33}, {-26,  34},
+    {23,  36}, {-19,  39},  {16,  40}, {-13,  41},   {9,  42},
+    {-6,  43},   {1,  43},   {0,   0},   {0,   0},   {0,   0}
+};
+
+#define NGLYPHS 256
+static int8_t p4x4glyphs[NGLYPHS][16];
+static int8_t p8x8glyphs[NGLYPHS][64];
+
+typedef struct sanm_ctx
+{
+    AVCodecContext *avctx;
+    const uint8_t* psrc;
+
+    int version, subversion;
+    uint32_t pal[256];
+    int16_t delta_pal[768];
+
+    int pitch;
+    int width, height;
+    int aligned_width, aligned_height;
+    int prev_seq;
+
+    AVFrame frame, *output;
+    uint16_t* pdb0, * pdb1, * pdb2;
+    int rotate_code;
+
+    long npixels, buf_size;
+
+    uint16_t* pcodebook;
+    uint16_t* psmall_codebook;
+} sanm_ctx;
+
+typedef struct sanm_frame_header
+{
+    int seq_num, codec, rotate_code, rle_output_size;
+
+    uint16_t bg_color;
+    uint32_t width, height;
+
+    const uint8_t* pvstream;
+} sanm_frame_header;
+
+typedef enum glyph_edge
+{
+   left_edge,
+   top_edge,
+   right_edge,
+   bottom_edge,
+   no_edge
+} glyph_edge;
+
+typedef enum glyph_dir
+{
+    dir_left = 0,
+    dir_up,
+    dir_right,
+    dir_down
+} glyph_dir;
+
+static uint16_t* point_at(uint16_t* pbuf, int x, int y, int width)
+{
+    return &pbuf[y * width + x];
+}
+
+static glyph_edge which_edge(int x, int y, int edge_size)
+{
+    glyph_edge edge;
+    const int edge_max = edge_size - 1;
+
+    if (!y)
+    {
+        edge = bottom_edge;
+    }
+    else if (edge_max == y)
+    {
+        edge = top_edge;
+    }
+    else if (!x)
+    {
+        edge = left_edge;
+    }
+    else if (edge_max == x)
+    {
+        edge = right_edge;
+    }
+    else
+    {
+        edge = no_edge;
+    }
+
+    return edge;
+}
+
+static glyph_dir which_direction(glyph_edge edge0, glyph_edge edge1)
+{
+    glyph_dir dir = -1;
+
+    if ((left_edge == edge0 && right_edge == edge1) ||
+        (left_edge == edge1 && right_edge == edge0) ||
+        (bottom_edge == edge0 && top_edge != edge1) ||
+        (bottom_edge == edge1 && top_edge != edge0))
+    {
+        dir = dir_up;
+    }
+    else if ((top_edge == edge0 && bottom_edge != edge1) ||
+             (top_edge == edge1 && bottom_edge != edge0))
+    {
+        dir = dir_down;
+    }
+    else if ((left_edge == edge0 && right_edge != edge1) ||
+             (left_edge == edge1 && right_edge != edge0))
+    {
+        dir = dir_left;
+    }
+    else if ((top_edge == edge0 && bottom_edge == edge1) ||
+             (top_edge == edge1 && bottom_edge == edge0) ||
+             (right_edge == edge0 && left_edge != edge1) ||
+             (right_edge == edge1 && left_edge != edge0))
+    {
+        dir = dir_right;
+    }
+
+    return dir;
+}
+
+static void interp_point(int8_t* ppoint, int x0, int y0, int x1, int y1, int ipoint, int npoints)
+{
+    if (npoints)
+    {
+        ppoint[0] = (x0 * ipoint + x1 * (npoints - ipoint) + npoints / 2) / npoints;
+        ppoint[1] = (y0 * ipoint + y1 * (npoints - ipoint) + npoints / 2) / npoints;
+    }
+    else
+    {
+        ppoint[0] = x0;
+        ppoint[1] = y0;
+    }
+}
+
+static void make_glyphs(int8_t* pglyphs, const int8_t* pxvector, const int8_t* pyvector, const int side_length)
+{
+    const int glyph_size = side_length * side_length;
+    int8_t* pglyph = pglyphs;
+
+    int i, j;
+    for (i = 0; i != GLYPH_COORD_VECT_SIZE; ++i)
+    {
+        int x0 = pxvector[i], y0 = pyvector[i];
+        glyph_edge edge0 = which_edge(x0, y0, side_length);
+
+        for (j = 0; j != GLYPH_COORD_VECT_SIZE; ++j, pglyph += glyph_size)
+        {
+            int x1 = pxvector[j], y1 = pyvector[j];
+            glyph_edge edge1 = which_edge(x1, y1, side_length);
+            glyph_dir dir = which_direction(edge0, edge1);
+            int ipoint, npoints = FFMAX(FFABS(x1 - x0), FFABS(y1 - y0));
+
+            memset(pglyph, 0, glyph_size * sizeof(pglyph[0]));
+            for (ipoint = 0; ipoint <= npoints; ++ipoint)
+            {
+                int8_t point[2];
+                int irow, icol;
+
+                interp_point(point, x0, y0, x1, y1, ipoint, npoints);
+
+                switch (dir)
+                {
+                case dir_up:
+                    for (irow = point[1]; irow >= 0; --irow)
+                    {
+                        pglyph[point[0] + irow*side_length] = 1;
+                    }
+                    break;
+
+                case dir_down:
+                    for (irow = point[1]; irow < side_length; ++irow)
+                    {
+                        pglyph[point[0] + irow*side_length] = 1;
+                    }
+                    break;
+
+                case dir_left:
+                    for (icol = point[0]; icol >= 0; --icol)
+                    {
+                        pglyph[icol + point[1]*side_length] = 1;
+                    }
+                    break;
+
+                case dir_right:
+                    for (icol = point[0]; icol < side_length; ++icol)
+                    {
+                        pglyph[icol + point[1]*side_length] = 1;
+                    }
+                    break;
+                }
+            }
+        }
+    }
+}
+
+static void init_sizes(sanm_ctx* pctx, int width, int height)
+{
+    pctx->width = width;
+    pctx->height = height;
+    pctx->npixels = width * height;
+
+    pctx->aligned_width = (width + 7) & ~7;
+    pctx->aligned_height = (height + 7) & ~7;
+
+    pctx->buf_size = pctx->aligned_width * pctx->aligned_height * sizeof(pctx->pdb0[0]);
+    pctx->pitch = width;
+}
+
+static void init_buffers(sanm_ctx* pctx)
+{
+    pctx->pdb0 = av_realloc(pctx->pdb0, pctx->buf_size);
+    memset(pctx->pdb0, 0, pctx->buf_size);
+
+    pctx->pdb1 = av_realloc(pctx->pdb1, pctx->buf_size);
+    memset(pctx->pdb1, 0, pctx->buf_size);
+
+    pctx->pdb2 = av_realloc(pctx->pdb2, pctx->buf_size);
+    memset(pctx->pdb2, 0, pctx->buf_size);
+}
+
+static void destroy_buffers(sanm_ctx* pctx)
+{
+    av_free(pctx->pdb0);
+    av_free(pctx->pdb1);
+    av_free(pctx->pdb2);
+}
+
+static int decode_init(AVCodecContext* pav_ctx)
+{
+    sanm_ctx* pctx = pav_ctx->priv_data;
+
+    pctx->avctx = pav_ctx;
+    /*if (avcodec_check_dimensions(pav_ctx, pav_ctx->height, pav_ctx->width) < 0)
+    {
+        return -1;
+    }*/
+
+    pctx->version = !pav_ctx->extradata_size;
+
+    pav_ctx->has_b_frames = 0;
+    pav_ctx->pix_fmt = pctx->version ? PIX_FMT_RGB565 : PIX_FMT_PAL8;
+
+    init_sizes(pctx, pav_ctx->width, pav_ctx->height);
+    init_buffers(pctx);
+    pctx->output = &pctx->frame;
+    pctx->output->data[0] = 0;
+    pctx->output->quality = 1;
+
+    make_glyphs(&p4x4glyphs[0][0], glyph4_x, glyph4_y, 4);
+    make_glyphs(&p8x8glyphs[0][0], glyph8_x, glyph8_y, 8);
+
+    if(!pctx->version){
+        int i;
+        pctx->subversion = AV_RL16(pav_ctx->extradata);
+        for(i = 0; i < 256; i++)
+            pctx->pal[i] = AV_RL32(pav_ctx->extradata + 2 + i*4);
+    }
+
+    return 0;
+}
+
+static int decode_end(AVCodecContext* pav_ctx)
+{
+    sanm_ctx* pctx = pav_ctx->priv_data;
+    int i;
+
+    destroy_buffers(pctx);
+
+    if (pctx->frame.data[0]){
+        pav_ctx->release_buffer(pav_ctx, &pctx->frame);
+        pctx->frame.data[0] = 0;
+    }
+
+    return 0;
+}
+
+static int read_frame_header(sanm_ctx* pctx, const uint8_t* pinput, sanm_frame_header* pheader)
+{
+    pinput += 8; // skip pad
+
+    pheader->width = AV_RL32(pinput); pinput += 4;
+    pheader->height = AV_RL32(pinput); pinput += 4;
+
+    if (pheader->width != pctx->width || pheader->height != pctx->height)
+    {
+        av_log(0, AV_LOG_ERROR, "sanm decoder: variable size frames are not implemented. video may be garbled until next keyframe.\n");
+        return -1;
+    }
+
+    pheader->seq_num = AV_RL16(pinput); pinput += 2;
+    pheader->codec = *pinput; pinput += 1;
+    pheader->rotate_code = *pinput; pinput += 1;
+
+    pinput += 4; // skip pad
+
+    pctx->psmall_codebook = (uint16_t*) pinput; pinput += 8;
+    pheader->bg_color = AV_RL16(pinput); pinput += 2;
+
+    pinput += 2; // skip pad
+
+    pheader->rle_output_size = AV_RL32(pinput); pinput += 4;
+    pctx->pcodebook = (uint16_t*) pinput; pinput += 512; // 256 entries in codebook
+
+    pinput += 8; // skip pad
+
+    pheader->pvstream = pinput;
+
+    return 0;
+}
+
+static void fill_db(uint16_t* pbuf, int buf_size, uint16_t color)
+{
+    while (buf_size--)
+    {
+        *pbuf++ = color;
+    }
+}
+
+static void swap(uint16_t** ppleft, uint16_t** ppright)
+{
+    uint16_t* ptemp = *ppleft;
+    *ppleft = *ppright;
+    *ppright = ptemp;
+}
+
+static void rotate_bufs(sanm_ctx* pctx, int rotate_code)
+{
+    if (1 == rotate_code)
+    {
+        swap(&pctx->pdb0, &pctx->pdb2);
+    }
+    else if (2 == rotate_code)
+    {
+        swap(&pctx->pdb1, &pctx->pdb2);
+        swap(&pctx->pdb2, &pctx->pdb0);
+    }
+}
+
+static void codec0(sanm_ctx* pctx, const uint8_t* pinput)
+{
+    uint16_t* pdb0 = pctx->pdb0;
+
+    int x, y;
+    for (y = 0; y != pctx->height; ++y)
+    {
+        for (x = 0; x != pctx->width; ++x)
+        {
+            *point_at(pdb0, x, y, pctx->pitch) = AV_RL16(pinput); pinput += 2;
+        }
+    }
+}
+
+static void codec6(sanm_ctx* pctx, const uint8_t* pinput)
+{
+    int npixels = pctx->npixels;
+    uint16_t* pdb0 = pctx->pdb0;
+    uint16_t* pcodebook = pctx->pcodebook;
+
+    int index;
+    while (npixels--)
+    {
+        index = *pinput++;
+        *pdb0++ = AV_RL16(&pcodebook[index]);
+    }
+}
+
+static void copy_block(uint16_t* pdest, uint16_t* psrc, int block_size, int pitch)
+{
+    int y;
+    for (y = 0; y != block_size; ++y, pdest += pitch, psrc += pitch)
+    {
+        memcpy(pdest, psrc, block_size * sizeof(pdest[0]));
+    }
+}
+
+static void fill_block(uint16_t* pdest, uint16_t color, int block_size, int pitch)
+{
+    int x, y;
+    pitch -= block_size;
+    for (y = 0; y != block_size; ++y, pdest += pitch)
+    {
+        for (x = 0; x != block_size; ++x)
+        {
+            *pdest++ = color;
+        }
+    }
+}
+
+static void draw_glyph(uint16_t* pdest, int index, uint16_t fg_color, uint16_t bg_color, int block_size, int pitch)
+{
+    int8_t* pglyph;
+    uint16_t colors[2] = { fg_color, bg_color };
+    int x, y;
+
+    if (index > NGLYPHS)
+    {
+        av_log(0, AV_LOG_ERROR, "sanm decoder: ignoring nonexistent glyph #%u.\n", index);
+        return;
+    }
+
+    pglyph = (8 == block_size) ? p8x8glyphs[index] : p4x4glyphs[index];
+    pitch -= block_size;
+
+    for (y = 0; y != block_size; ++y, pdest += pitch)
+    {
+        for (x = 0; x != block_size; ++x)
+        {
+            *pdest++ = colors[*pglyph++];
+        }
+    }
+}
+
+static void opcode_0xf7(sanm_ctx* pctx, int cx, int cy, int block_size, int pitch)
+{
+    if (2 == block_size)
+    {
+        uint16_t* pcodebook = pctx->pcodebook;
+        uint16_t* pdest = point_at(pctx->pdb0, cx, cy, pctx->pitch);
+        uint32_t indices = AV_RL32(pctx->psrc); pctx->psrc += 4;
+
+        pdest[0] = AV_RL16(&pcodebook[indices & 0xff]); indices >>= 8;
+        pdest[1] = AV_RL16(&pcodebook[indices & 0xff]); indices >>= 8;
+        pdest[pitch] = AV_RL16(&pcodebook[indices & 0xff]); indices >>= 8;
+        pdest[pitch + 1] = AV_RL16(&pcodebook[indices & 0xff]);
+    }
+    else
+    {
+        uint16_t fgcolor, bgcolor;
+
+        int index = *pctx->psrc++;
+        uint16_t color_indices = AV_RL16(pctx->psrc); pctx->psrc += 2;
+        fgcolor = AV_RL16(&pctx->pcodebook[color_indices >> 8]);
+        bgcolor = AV_RL16(&pctx->pcodebook[color_indices & 0xff]);
+
+        draw_glyph(point_at(pctx->pdb0, cx, cy, pctx->pitch), index, fgcolor, bgcolor, block_size, pitch);
+    }
+}
+
+static void opcode_0xf8(sanm_ctx* pctx, int cx, int cy, int block_size, int pitch)
+{
+    if (2 == block_size)
+    {
+        uint16_t* pdest = point_at(pctx->pdb0, cx, cy, pctx->pitch);
+        pdest[0] = AV_RL16(pctx->psrc); pctx->psrc += 2;
+        pdest[1] = AV_RL16(pctx->psrc); pctx->psrc += 2;
+        pdest[pitch] = AV_RL16(pctx->psrc); pctx->psrc += 2;
+        pdest[pitch + 1] = AV_RL16(pctx->psrc); pctx->psrc += 2;
+    }
+    else
+    {
+        uint16_t fgcolor, bgcolor;
+
+        int index = *pctx->psrc++;
+        uint32_t colors = AV_RL32(pctx->psrc); pctx->psrc += 4;
+        fgcolor = colors >> 16;
+        bgcolor = colors & 0xffff;
+
+        draw_glyph(point_at(pctx->pdb0, cx, cy, pctx->pitch), index, fgcolor, bgcolor, block_size, pitch);
+    }
+}
+
+static int good_mvec(sanm_ctx* pctx, int cx, int cy, int mx, int my, int block_size)
+{
+    int good = point_at(pctx->pdb2, cx + mx + block_size - 1, cy + my + block_size - 1, pctx->pitch) < (&pctx->pdb2[pctx->buf_size / 2]);
+    if (!good)
+    {
+        av_log(0, AV_LOG_ERROR, "sanm decoder: ignoring segfault-inducing motion vector (%i, %i)->(%u, %u), block size = %u.\n",
+               cx + mx, cy + my, cx, cy, block_size);
+    }
+
+    return good;
+}
+
+static void codec2level(sanm_ctx* pctx, int cx, int cy, int block_size)
+{
+    int16_t mx, my, index;
+    uint16_t color;
+
+    int opcode = *pctx->psrc++;
+
+    switch (opcode)
+    {
+    default:
+        mx = motion_vectors[opcode][0];
+        my = motion_vectors[opcode][1];
+
+        if (good_mvec(pctx, cx, cy, mx, my, block_size))
+        {
+            copy_block(point_at(pctx->pdb0, cx, cy, pctx->pitch),
+                       point_at(pctx->pdb2, cx + mx, cy + my, pctx->pitch),
+                       block_size, pctx->pitch);
+        }
+        break;
+
+    case 0xf5:
+        index = AV_RL16(pctx->psrc); pctx->psrc += 2;
+
+        mx = index % pctx->width;
+        my = index / pctx->width;
+
+        if (good_mvec(pctx, cx, cy, mx, my, block_size))
+        {
+            copy_block(point_at(pctx->pdb0, cx, cy, pctx->pitch),
+                       point_at(pctx->pdb2, cx + mx, cy + my, pctx->pitch),
+                       block_size, pctx->pitch);
+        }
+        break;
+
+    case 0xf6:
+        copy_block(point_at(pctx->pdb0, cx, cy, pctx->pitch),
+                   point_at(pctx->pdb1, cx, cy, pctx->pitch),
+                   block_size, pctx->pitch);
+        break;
+
+    case 0xf7:
+        opcode_0xf7(pctx, cx, cy, block_size, pctx->pitch);
+        break;
+
+    case 0xf8:
+        opcode_0xf8(pctx, cx, cy, block_size, pctx->pitch);
+        break;
+
+    case 0xf9:
+    case 0xfa:
+    case 0xfb:
+    case 0xfc:
+        color = AV_RL16(&pctx->psmall_codebook[opcode - 0xf9]);
+        fill_block(point_at(pctx->pdb0, cx, cy, pctx->pitch), color, block_size, pctx->pitch);
+        break;
+
+    case 0xfd:
+        index = *pctx->psrc++;
+        color = AV_RL16(&pctx->pcodebook[index]);
+        fill_block(point_at(pctx->pdb0, cx, cy, pctx->pitch), color, block_size, pctx->pitch);
+        break;
+
+    case 0xfe:
+        color = AV_RL16(pctx->psrc); pctx->psrc += 2;
+        fill_block(point_at(pctx->pdb0, cx, cy, pctx->pitch), color, block_size, pctx->pitch);
+        break;
+
+    case 0xff:
+        if (2 == block_size)
+        {
+            opcode_0xf8(pctx, cx, cy, block_size, pctx->pitch);
+        }
+        else
+        {
+            block_size >>= 1;
+            codec2level(pctx, cx             , cy             , block_size);
+            codec2level(pctx, cx + block_size, cy             , block_size);
+            codec2level(pctx, cx             , cy + block_size, block_size);
+            codec2level(pctx, cx + block_size, cy + block_size, block_size);
+        }
+        break;
+    }
+}
+
+static void rle_decode(uint8_t* pdest, const uint8_t* pinput, const int out_size)
+{
+    int opcode, color, run_len, remaining = out_size;
+
+    assert(out_size > 0);
+
+    while (remaining)
+    {
+        opcode = *pinput++;
+        run_len = (opcode >> 1) + 1;
+        assert(run_len <= remaining);
+
+        if (opcode & 1) // rle strip
+        {
+            color = *pinput++;
+            memset(pdest, color, run_len);
+        }
+        else
+        {
+            memcpy(pdest, pinput, run_len);
+            pinput += run_len;
+        }
+
+        pdest += run_len;
+        remaining -= run_len;
+    }
+}
+
+static void codec5(sanm_ctx* pctx, const uint8_t* pinput, const int decoded_size)
+{
+    uint8_t* pdest = (uint8_t*) pctx->pdb0;
+    int npixels = pctx->npixels;
+    uint16_t* pdb0 = pctx->pdb0;
+
+    assert(!(decode_size & 1));
+
+    rle_decode(pdest, pinput, decoded_size);
+
+    while (npixels--)
+    {
+        *pdb0 = AV_RL16(pdb0);
+        ++pdb0;
+    }
+}
+
+static void codec2(sanm_ctx* pctx, const uint8_t* pinput)
+{
+    const int width = pctx->aligned_width, height = pctx->aligned_height;
+    int cx, cy;
+
+    pctx->psrc = pinput;
+    for (cy = 0; cy != height; cy += 8)
+    {
+        for (cx = 0; cx != width; cx += 8)
+        {
+            codec2level(pctx, cx, cy, 8);
+        }
+    }
+}
+
+static void codec8(sanm_ctx* pctx, const uint8_t* pinput, const int decoded_size)
+{
+    uint16_t* pdest = pctx->pdb0;
+    uint8_t* pindices = av_malloc(decoded_size);
+    uint8_t* pidx_cursor = pindices;
+    long npixels = pctx->npixels;
+
+    rle_decode(pindices, pinput, decoded_size);
+
+    while (npixels--)
+    {
+        int index = *pidx_cursor++;
+        *pdest++ = AV_RL16(&pctx->pcodebook[index]);
+    }
+
+    av_free(pindices);
+}
+
+static void copy_output(sanm_ctx* pctx, sanm_frame_header* pheader)
+{
+    uint8_t* poutput;
+    const uint8_t* pinput = (uint8_t*) pctx->pdb0;
+
+    int height = pctx->height;
+    long inpitch = pctx->pitch * (pheader ? sizeof(pctx->pdb0[0]) : 1);
+    long outpitch;
+
+    if (pctx->avctx->get_buffer(pctx->avctx, pctx->output))
+    {
+        av_log(pctx->avctx, AV_LOG_ERROR, "sanm decoder: get_buffer() failed.\n");
+        return;
+    }
+    poutput = pctx->output->data[0];
+    outpitch = pctx->output->linesize[0];
+    while (height--)
+    {
+        memcpy(poutput, pinput, inpitch);
+        pinput += inpitch;
+        poutput += outpitch;
+    }
+}
+
+static void codec1(sanm_ctx* pctx, const uint8_t* pinput, int top, int left, int width, int height)
+{
+    uint8_t *dst = ((uint8_t*)pctx->pdb0) + left + top * pctx->pitch;
+    const uint8_t* end;
+    int i, j, len, flag, code, val, pos;
+    for(i = 0; i < height; i++){
+        pos = 0;
+        len = bytestream_get_le16(&pinput);
+        end = pinput + len;
+        while(pinput < end){
+            code = bytestream_get_byte(&pinput);
+            flag = code & 1;
+            code = (code >> 1) + 1;
+            if(flag){
+                val = bytestream_get_byte(&pinput);
+                if(val)
+                    memset(dst + pos, val, code);
+                pos += code;
+            }else{
+                for(j = 0; j < code; j++){
+                    val = bytestream_get_byte(&pinput);
+                    if(val)
+                        dst[pos] = val;
+                    pos++;
+                }
+            }
+        }
+        dst += pctx->pitch;
+    }
+    pctx->rotate_code = 0;
+}
+
+static const int8_t c37_mv[] = {
+    0,   0,   1,   0,   2,   0,   3,   0,   5,   0,
+    8,   0,  13,   0,  21,   0,  -1,   0,  -2,   0,
+   -3,   0,  -5,   0,  -8,   0, -13,   0, -17,   0,
+  -21,   0,   0,   1,   1,   1,   2,   1,   3,   1,
+    5,   1,   8,   1,  13,   1,  21,   1,  -1,   1,
+   -2,   1,  -3,   1,  -5,   1,  -8,   1, -13,   1,
+  -17,   1, -21,   1,   0,   2,   1,   2,   2,   2,
+    3,   2,   5,   2,   8,   2,  13,   2,  21,   2,
+   -1,   2,  -2,   2,  -3,   2,  -5,   2,  -8,   2,
+  -13,   2, -17,   2, -21,   2,   0,   3,   1,   3,
+    2,   3,   3,   3,   5,   3,   8,   3,  13,   3,
+   21,   3,  -1,   3,  -2,   3,  -3,   3,  -5,   3,
+   -8,   3, -13,   3, -17,   3, -21,   3,   0,   5,
+    1,   5,   2,   5,   3,   5,   5,   5,   8,   5,
+   13,   5,  21,   5,  -1,   5,  -2,   5,  -3,   5,
+   -5,   5,  -8,   5, -13,   5, -17,   5, -21,   5,
+    0,   8,   1,   8,   2,   8,   3,   8,   5,   8,
+    8,   8,  13,   8,  21,   8,  -1,   8,  -2,   8,
+   -3,   8,  -5,   8,  -8,   8, -13,   8, -17,   8,
+  -21,   8,   0,  13,   1,  13,   2,  13,   3,  13,
+    5,  13,   8,  13,  13,  13,  21,  13,  -1,  13,
+   -2,  13,  -3,  13,  -5,  13,  -8,  13, -13,  13,
+  -17,  13, -21,  13,   0,  21,   1,  21,   2,  21,
+    3,  21,   5,  21,   8,  21,  13,  21,  21,  21,
+   -1,  21,  -2,  21,  -3,  21,  -5,  21,  -8,  21,
+  -13,  21, -17,  21, -21,  21,   0,  -1,   1,  -1,
+    2,  -1,   3,  -1,   5,  -1,   8,  -1,  13,  -1,
+   21,  -1,  -1,  -1,  -2,  -1,  -3,  -1,  -5,  -1,
+   -8,  -1, -13,  -1, -17,  -1, -21,  -1,   0,  -2,
+    1,  -2,   2,  -2,   3,  -2,   5,  -2,   8,  -2,
+   13,  -2,  21,  -2,  -1,  -2,  -2,  -2,  -3,  -2,
+   -5,  -2,  -8,  -2, -13,  -2, -17,  -2, -21,  -2,
+    0,  -3,   1,  -3,   2,  -3,   3,  -3,   5,  -3,
+    8,  -3,  13,  -3,  21,  -3,  -1,  -3,  -2,  -3,
+   -3,  -3,  -5,  -3,  -8,  -3, -13,  -3, -17,  -3,
+  -21,  -3,   0,  -5,   1,  -5,   2,  -5,   3,  -5,
+    5,  -5,   8,  -5,  13,  -5,  21,  -5,  -1,  -5,
+   -2,  -5,  -3,  -5,  -5,  -5,  -8,  -5, -13,  -5,
+  -17,  -5, -21,  -5,   0,  -8,   1,  -8,   2,  -8,
+    3,  -8,   5,  -8,   8,  -8,  13,  -8,  21,  -8,
+   -1,  -8,  -2,  -8,  -3,  -8,  -5,  -8,  -8,  -8,
+  -13,  -8, -17,  -8, -21,  -8,   0, -13,   1, -13,
+    2, -13,   3, -13,   5, -13,   8, -13,  13, -13,
+   21, -13,  -1, -13,  -2, -13,  -3, -13,  -5, -13,
+   -8, -13, -13, -13, -17, -13, -21, -13,   0, -17,
+    1, -17,   2, -17,   3, -17,   5, -17,   8, -17,
+   13, -17,  21, -17,  -1, -17,  -2, -17,  -3, -17,
+   -5, -17,  -8, -17, -13, -17, -17, -17, -21, -17,
+    0, -21,   1, -21,   2, -21,   3, -21,   5, -21,
+    8, -21,  13, -21,  21, -21,  -1, -21,  -2, -21,
+   -3, -21,  -5, -21,  -8, -21, -13, -21, -17, -21,
+    0,   0,  -8, -29,   8, -29, -18, -25,  17, -25,
+    0, -23,  -6, -22,   6, -22, -13, -19,  12, -19,
+    0, -18,  25, -18, -25, -17,  -5, -17,   5, -17,
+  -10, -15,  10, -15,   0, -14,  -4, -13,   4, -13,
+   19, -13, -19, -12,  -8, -11,  -2, -11,   0, -11,
+    2, -11,   8, -11, -15, -10,  -4, -10,   4, -10,
+   15, -10,  -6,  -9,  -1,  -9,   1,  -9,   6,  -9,
+  -29,  -8, -11,  -8,  -8,  -8,  -3,  -8,   3,  -8,
+    8,  -8,  11,  -8,  29,  -8,  -5,  -7,  -2,  -7,
+    0,  -7,   2,  -7,   5,  -7, -22,  -6,  -9,  -6,
+   -6,  -6,  -3,  -6,  -1,  -6,   1,  -6,   3,  -6,
+    6,  -6,   9,  -6,  22,  -6, -17,  -5,  -7,  -5,
+   -4,  -5,  -2,  -5,   0,  -5,   2,  -5,   4,  -5,
+    7,  -5,  17,  -5, -13,  -4, -10,  -4,  -5,  -4,
+   -3,  -4,  -1,  -4,   0,  -4,   1,  -4,   3,  -4,
+    5,  -4,  10,  -4,  13,  -4,  -8,  -3,  -6,  -3,
+   -4,  -3,  -3,  -3,  -2,  -3,  -1,  -3,   0,  -3,
+    1,  -3,   2,  -3,   4,  -3,   6,  -3,   8,  -3,
+  -11,  -2,  -7,  -2,  -5,  -2,  -3,  -2,  -2,  -2,
+   -1,  -2,   0,  -2,   1,  -2,   2,  -2,   3,  -2,
+    5,  -2,   7,  -2,  11,  -2,  -9,  -1,  -6,  -1,
+   -4,  -1,  -3,  -1,  -2,  -1,  -1,  -1,   0,  -1,
+    1,  -1,   2,  -1,   3,  -1,   4,  -1,   6,  -1,
+    9,  -1, -31,   0, -23,   0, -18,   0, -14,   0,
+  -11,   0,  -7,   0,  -5,   0,  -4,   0,  -3,   0,
+   -2,   0,  -1,   0,   0, -31,   1,   0,   2,   0,
+    3,   0,   4,   0,   5,   0,   7,   0,  11,   0,
+   14,   0,  18,   0,  23,   0,  31,   0,  -9,   1,
+   -6,   1,  -4,   1,  -3,   1,  -2,   1,  -1,   1,
+    0,   1,   1,   1,   2,   1,   3,   1,   4,   1,
+    6,   1,   9,   1, -11,   2,  -7,   2,  -5,   2,
+   -3,   2,  -2,   2,  -1,   2,   0,   2,   1,   2,
+    2,   2,   3,   2,   5,   2,   7,   2,  11,   2,
+   -8,   3,  -6,   3,  -4,   3,  -2,   3,  -1,   3,
+    0,   3,   1,   3,   2,   3,   3,   3,   4,   3,
+    6,   3,   8,   3, -13,   4, -10,   4,  -5,   4,
+   -3,   4,  -1,   4,   0,   4,   1,   4,   3,   4,
+    5,   4,  10,   4,  13,   4, -17,   5,  -7,   5,
+   -4,   5,  -2,   5,   0,   5,   2,   5,   4,   5,
+    7,   5,  17,   5, -22,   6,  -9,   6,  -6,   6,
+   -3,   6,  -1,   6,   1,   6,   3,   6,   6,   6,
+    9,   6,  22,   6,  -5,   7,  -2,   7,   0,   7,
+    2,   7,   5,   7, -29,   8, -11,   8,  -8,   8,
+   -3,   8,   3,   8,   8,   8,  11,   8,  29,   8,
+   -6,   9,  -1,   9,   1,   9,   6,   9, -15,  10,
+   -4,  10,   4,  10,  15,  10,  -8,  11,  -2,  11,
+    0,  11,   2,  11,   8,  11,  19,  12, -19,  13,
+   -4,  13,   4,  13,   0,  14, -10,  15,  10,  15,
+   -5,  17,   5,  17,  25,  17, -25,  18,   0,  18,
+  -12,  19,  13,  19,  -6,  22,   6,  22,   0,  23,
+  -17,  25,  18,  25,  -8,  29,   8,  29,   0,  31,
+    0,   0,  -6, -22,   6, -22, -13, -19,  12, -19,
+    0, -18,  -5, -17,   5, -17, -10, -15,  10, -15,
+    0, -14,  -4, -13,   4, -13,  19, -13, -19, -12,
+   -8, -11,  -2, -11,   0, -11,   2, -11,   8, -11,
+  -15, -10,  -4, -10,   4, -10,  15, -10,  -6,  -9,
+   -1,  -9,   1,  -9,   6,  -9, -11,  -8,  -8,  -8,
+   -3,  -8,   0,  -8,   3,  -8,   8,  -8,  11,  -8,
+   -5,  -7,  -2,  -7,   0,  -7,   2,  -7,   5,  -7,
+  -22,  -6,  -9,  -6,  -6,  -6,  -3,  -6,  -1,  -6,
+    1,  -6,   3,  -6,   6,  -6,   9,  -6,  22,  -6,
+  -17,  -5,  -7,  -5,  -4,  -5,  -2,  -5,  -1,  -5,
+    0,  -5,   1,  -5,   2,  -5,   4,  -5,   7,  -5,
+   17,  -5, -13,  -4, -10,  -4,  -5,  -4,  -3,  -4,
+   -2,  -4,  -1,  -4,   0,  -4,   1,  -4,   2,  -4,
+    3,  -4,   5,  -4,  10,  -4,  13,  -4,  -8,  -3,
+   -6,  -3,  -4,  -3,  -3,  -3,  -2,  -3,  -1,  -3,
+    0,  -3,   1,  -3,   2,  -3,   3,  -3,   4,  -3,
+    6,  -3,   8,  -3, -11,  -2,  -7,  -2,  -5,  -2,
+   -4,  -2,  -3,  -2,  -2,  -2,  -1,  -2,   0,  -2,
+    1,  -2,   2,  -2,   3,  -2,   4,  -2,   5,  -2,
+    7,  -2,  11,  -2,  -9,  -1,  -6,  -1,  -5,  -1,
+   -4,  -1,  -3,  -1,  -2,  -1,  -1,  -1,   0,  -1,
+    1,  -1,   2,  -1,   3,  -1,   4,  -1,   5,  -1,
+    6,  -1,   9,  -1, -23,   0, -18,   0, -14,   0,
+  -11,   0,  -7,   0,  -5,   0,  -4,   0,  -3,   0,
+   -2,   0,  -1,   0,   0, -23,   1,   0,   2,   0,
+    3,   0,   4,   0,   5,   0,   7,   0,  11,   0,
+   14,   0,  18,   0,  23,   0,  -9,   1,  -6,   1,
+   -5,   1,  -4,   1,  -3,   1,  -2,   1,  -1,   1,
+    0,   1,   1,   1,   2,   1,   3,   1,   4,   1,
+    5,   1,   6,   1,   9,   1, -11,   2,  -7,   2,
+   -5,   2,  -4,   2,  -3,   2,  -2,   2,  -1,   2,
+    0,   2,   1,   2,   2,   2,   3,   2,   4,   2,
+    5,   2,   7,   2,  11,   2,  -8,   3,  -6,   3,
+   -4,   3,  -3,   3,  -2,   3,  -1,   3,   0,   3,
+    1,   3,   2,   3,   3,   3,   4,   3,   6,   3,
+    8,   3, -13,   4, -10,   4,  -5,   4,  -3,   4,
+   -2,   4,  -1,   4,   0,   4,   1,   4,   2,   4,
+    3,   4,   5,   4,  10,   4,  13,   4, -17,   5,
+   -7,   5,  -4,   5,  -2,   5,  -1,   5,   0,   5,
+    1,   5,   2,   5,   4,   5,   7,   5,  17,   5,
+  -22,   6,  -9,   6,  -6,   6,  -3,   6,  -1,   6,
+    1,   6,   3,   6,   6,   6,   9,   6,  22,   6,
+   -5,   7,  -2,   7,   0,   7,   2,   7,   5,   7,
+  -11,   8,  -8,   8,  -3,   8,   0,   8,   3,   8,
+    8,   8,  11,   8,  -6,   9,  -1,   9,   1,   9,
+    6,   9, -15,  10,  -4,  10,   4,  10,  15,  10,
+   -8,  11,  -2,  11,   0,  11,   2,  11,   8,  11,
+   19,  12, -19,  13,  -4,  13,   4,  13,   0,  14,
+  -10,  15,  10,  15,  -5,  17,   5,  17,   0,  18,
+  -12,  19,  13,  19,  -6,  22,   6,  22,   0,  23,
+};
+
+static void codec37(sanm_ctx* pctx, const uint8_t* src, int top, int left, int width, int height)
+{
+    int stride = pctx->pitch;
+    uint8_t *dst;
+    uint8_t *prev;
+    uint8_t *buf;
+    int compr = src[0];
+    int mvoff = src[1];
+    int seq = src[2];
+    int i, j, k, t;
+    int flags = src[12];
+    int skip_run = 0;
+
+    pctx->rotate_code = 0;
+    if(((seq & 1) || !(flags & 1)) && (compr >= 3))
+        rotate_bufs(pctx, 1);
+    dst = ((uint8_t*)pctx->pdb0) + left + top * stride;
+    prev = pctx->pdb2;
+    src += 16;
+    switch(compr){
+    case 0:
+        for(i = 0; i < height; i++){
+            memcpy(dst, src, width);
+            src += width;
+            dst += stride;
+        }
+        memset(pctx->pdb1, 0, pctx->height * stride);
+        memset(pctx->pdb2, 0, pctx->height * stride);
+        break;
+    case 1:
+        av_log(NULL,0,"Codec 37 compr 1: TODO\n");
+        break;
+    case 2:
+        t = width * height;
+        buf = av_malloc(t+16);
+        rle_decode(buf, src, t);
+        src = buf;
+        for(j = 0; j < height; j++){
+            for(i = 0; i < width; i++)
+                memcpy(dst, src, width);
+            dst += stride;
+            src += width;
+        }
+        memset(pctx->pdb1, 0, pctx->height * stride);
+        memset(pctx->pdb2, 0, pctx->height * stride);
+        av_free(buf);
+        break;
+    case 3:
+    case 4:
+        if(flags & 4){
+            for(j = 0; j < height; j += 4){
+                for(i = 0; i < width; i += 4){
+                    int code;
+                    if(skip_run){
+                        skip_run--;
+                        for(k = 0; k < 4; k++)
+                            memcpy(dst + i + k*stride, prev + i + k*stride, 4);
+                        continue;
+                    }
+                    code = bytestream_get_byte(&src);
+                    switch(code){
+                    case 0xFF:
+                        for(k = 0; k < 4; k++)
+                            bytestream_get_buffer(&src, dst + i + k*stride, 4);
+                        break;
+                    case 0xFE:
+                        for(k = 0; k < 4; k++)
+                            memset(dst + i + k*stride, bytestream_get_byte(&src), 4);
+                        break;
+                    case 0xFD:
+                        t = bytestream_get_byte(&src);
+                        for(k = 0; k < 4; k++)
+                            memset(dst + i + k*stride, t, 4);
+                        break;
+                    default:
+                        if(compr == 4 && !code){
+                            skip_run = bytestream_get_byte(&src) + 1;
+                            i -= 4;
+                        }else{
+                            int mx, my;
+                            mx = c37_mv[(mvoff*255 + code)*2];
+                            my = c37_mv[(mvoff*255 + code)*2+1];
+                            for(k = 0; k < 4; k++)
+                                memcpy(dst + i + k*stride, prev + i + mx + (k + my)*stride, 4);
+                        }
+                    }
+                }
+                dst  += stride * 4;
+                prev += stride * 4;
+            }
+        }else{
+            for(j = 0; j < height; j += 4){
+                for(i = 0; i < width; i += 4){
+                    int code;
+                    if(skip_run){
+                        skip_run--;
+                        for(k = 0; k < 4; k++)
+                            memcpy(dst + i + k*stride, prev + i + k*stride, 4);
+                        continue;
+                    }
+                    code = bytestream_get_byte(&src);
+                    if(code == 0xFF){
+                        for(k = 0; k < 4; k++)
+                            bytestream_get_buffer(&src, dst + i + k*stride, 4);
+                    }else if(compr == 4 && !code){
+                        skip_run = bytestream_get_byte(&src) + 1;
+                        i -= 4;
+                    }else{
+                        int mx, my;
+                        mx = c37_mv[(mvoff*255 + code)*2];
+                        my = c37_mv[(mvoff*255 + code)*2+1];
+                        if(my + j >= 0)
+                        for(k = 0; k < 4; k++)
+                            memcpy(dst + i + k*stride, prev + i + mx + (k + my)*stride, 4);
+                    }
+                }
+                dst  += stride * 4;
+                prev += stride * 4;
+            }
+        }
+        break;
+    }
+}
+
+static void process_block(uint8_t *dst, uint8_t *prev1, uint8_t *prev2, int stride, const uint8_t **src, const uint8_t *tbl, int size)
+{
+    int code;
+    int k, t;
+
+    code = bytestream_get_byte(src);
+    if(code >= 0xF8){
+        switch(code){
+        case 0xFF:
+            if(size == 2){
+                dst[0] = bytestream_get_byte(src);
+                dst[1] = bytestream_get_byte(src);
+                dst[0+stride] = bytestream_get_byte(src);
+                dst[1+stride] = bytestream_get_byte(src);
+            }else{
+                size >>= 1;
+                process_block(dst,      prev1,      prev2,      stride, src, tbl, size);
+                process_block(dst+size, prev1+size, prev2+size, stride, src, tbl, size);
+                dst   += size * stride;
+                prev1 += size * stride;
+                prev2 += size * stride;
+                process_block(dst,      prev1,      prev2,      stride, src, tbl, size);
+                process_block(dst+size, prev1+size, prev2+size, stride, src, tbl, size);
+            }
+            break;
+        case 0xFE:
+            t = bytestream_get_byte(src);
+            for(k = 0; k < size; k++)
+                memset(dst + k*stride, t, size);
+            break;
+        case 0xFD:
+            {
+                int code = bytestream_get_byte(src);
+                int8_t *pglyph = (size == 8) ? p8x8glyphs[code] : p4x4glyphs[code];
+
+                for(k = 0; k < size; k++)
+                    for(t = 0; t < size; t++)
+                        dst[t + k*stride] = src[0][!(*pglyph++)];
+                *src += 2;
+            }
+            break;
+        case 0xFC:
+            for(k = 0; k < size; k++)
+                memcpy(dst + k*stride, prev1 + k*stride, size);
+            break;
+        default:
+            t = tbl[code & 7];
+            for(k = 0; k < size; k++)
+                memset(dst + k*stride, t, size);
+        }
+    }else{
+        int mx = motion_vectors[code][0];
+        int my = motion_vectors[code][1];
+        for(k = 0; k < size; k++)
+            memcpy(dst + k*stride, prev2 + mx + (my+k)*stride, size);
+    }
+}
+
+static void codec47(sanm_ctx* pctx, const uint8_t* pinput, int top, int left, int width, int height)
+{
+    int compr = pinput[2];
+    const uint8_t *src = pinput + 26;
+    int stride = pctx->pitch;
+    uint8_t *dst = pctx->pdb0 + left + top * stride;
+    uint8_t *prev1 = pctx->pdb1;
+    uint8_t *prev2 = pctx->pdb2;
+    int i, j, t;
+    uint8_t *buf;
+    int seq = AV_RL16(pinput);
+    if(pinput[4] & 1)
+        src += 0x8080;
+    if(!seq)
+        pctx->prev_seq = -1;
+    switch(compr){
+    case 0:
+        for(j = 0; j < height; j++){
+            for(i = 0; i < width; i++)
+                memcpy(dst, src, width);
+            dst += stride;
+            src += width;
+        }
+        break;
+    case 1:
+        av_log(NULL,0,"Codec 47 compr 1: TODO\n");
+        break;
+    case 2:
+        if(seq == pctx->prev_seq + 1){
+        for(j = 0; j < height; j += 8){
+            for(i = 0; i < width; i += 8){
+                process_block(dst + i, prev1 + i, prev2 + i, stride, &src, pinput + 8, 8);
+            }
+            dst  += stride * 8;
+            prev1 += stride * 8;
+            prev2 += stride * 8;
+        }
+        }
+        break;
+    case 3:
+        memcpy(pctx->pdb0, pctx->pdb2, pctx->pitch * pctx->height);
+        break;
+    case 4:
+        memcpy(pctx->pdb0, pctx->pdb1, pctx->pitch * pctx->height);
+        break;
+    case 5:
+        t = AV_RL32(pinput + 14);
+        buf = av_malloc(t+16);
+        rle_decode(buf, src, t);
+        src = buf;
+        for(j = 0; j < height; j++){
+            for(i = 0; i < width; i++)
+                memcpy(dst, src, width);
+            dst += stride;
+            src += width;
+        }
+        av_free(buf);
+        break;
+    }
+    if(seq == pctx->prev_seq + 1)
+        pctx->rotate_code = pinput[3];
+    else
+        pctx->rotate_code = 0;
+    pctx->prev_seq = seq;
+}
+
+
+static void process_npal(sanm_ctx* pctx, const uint8_t* pinput)
+{
+    int i;
+    for(i = 0; i < 256; i++)
+        pctx->pal[i] = bytestream_get_be24(&pinput);
+}
+
+static void process_xpal(sanm_ctx* pctx, const uint8_t* pinput, int size)
+{
+    int i, j;
+
+    if(size == 6){
+        for(i = 0; i < 256; i++){
+            uint8_t tmp[4];
+            for(j = 0; j < 3; j++){
+                int t = (pctx->pal[i] >> (16 - j*8)) & 0xFF;
+                tmp[2-j] = av_clip_uint8((t*129 + pctx->delta_pal[i*3+j]) / 128);
+            }
+            pctx->pal[i] = AV_RL24(tmp);
+        }
+    }else{
+        pinput += 4;
+        for(i = 0; i < 768; i++)
+            pctx->delta_pal[i] = bytestream_get_le16(&pinput);
+        for(i = 0; i < 256; i++)
+            pctx->pal[i] = bytestream_get_be24(&pinput);
+    }
+}
+
+static void process_fobj(sanm_ctx* pctx, const uint8_t* pinput)
+{
+    int i;
+    int codec, top, left, w, h;
+    codec = bytestream_get_le16(&pinput);
+    top = bytestream_get_le16(&pinput);
+    left = bytestream_get_le16(&pinput);
+    w = bytestream_get_le16(&pinput);
+    h = bytestream_get_le16(&pinput);
+    if(pctx->width < left + w || pctx->height < top + h){
+        pctx->avctx->width = left + w;
+        pctx->avctx->height = top + h;
+        init_sizes(pctx, left + w, top + h);
+        init_buffers(pctx);
+    }
+    pinput += 4;
+    switch(codec){
+    case 1:
+        codec1(pctx, pinput, top, left, w, h);
+        break;
+    case 37:
+        codec37(pctx, pinput, top, left, w, h);
+        break;
+    case 47:
+        codec47(pctx, pinput, top, left, w, h);
+        break;
+    default:
+        av_log(NULL,0,"Unknown codec %d\n",codec);
+    }
+}
+
+static int dispatch_codec1(sanm_ctx* pctx, const uint8_t* pinput, const int isize)
+{
+    const uint8_t *frame_end = pinput + isize;
+    while(pinput < frame_end - 8){
+        int sig  = AV_RB32(pinput);
+        int size = AV_RB32(pinput+4);
+        pinput += 8;
+        if(size < 0 || pinput + size > frame_end){
+            av_log(NULL,0,"Incorrect size (%d|%X, %d)\n",size,size,frame_end-pinput);
+            break;
+        }
+        switch(sig){
+        case MKBETAG('N', 'P', 'A', 'L'):
+            process_npal(pctx, pinput);
+            break;
+        case MKBETAG('F', 'O', 'B', 'J'):
+            process_fobj(pctx, pinput);
+            break;
+        case MKBETAG('X', 'P', 'A', 'L'):
+            process_xpal(pctx, pinput, size);
+            break;
+        }
+
+        pinput += size;
+        if(size & 1)
+            pinput++;
+    }
+    copy_output(pctx, NULL);
+    rotate_bufs(pctx, pctx->rotate_code);
+    memcpy(pctx->output->data[1], pctx->pal, 1024);
+    return 0;
+}
+
+static int dispatch_codec(sanm_ctx* pctx, const uint8_t* pinput)
+{
+    sanm_frame_header header;
+    if (read_frame_header(pctx, pinput, &header))
+    {
+        return -1;
+    }
+
+    if ((pctx->output->key_frame = !header.seq_num))
+    {
+        pctx->output->pict_type = FF_I_TYPE;
+        fill_db(pctx->pdb1, pctx->npixels, header.bg_color);
+        fill_db(pctx->pdb2, pctx->npixels, header.bg_color);
+    }
+    else
+    {
+        pctx->output->pict_type = FF_P_TYPE;
+    }
+
+    switch (header.codec)
+    {
+    case 0:
+        codec0(pctx, header.pvstream);
+        break;
+
+    case 2:
+        codec2(pctx, header.pvstream);
+        break;
+
+    case 3:
+        memcpy(pctx->pdb0, pctx->pdb2, pctx->buf_size);
+        break;
+
+    case 4:
+        memcpy(pctx->pdb0, pctx->pdb1, pctx->buf_size);
+        break;
+
+    case 5:
+        codec5(pctx, header.pvstream, header.rle_output_size);
+        break;
+
+    case 6:
+        codec6(pctx, header.pvstream);
+        break;
+
+    case 8:
+        codec8(pctx, header.pvstream, pctx->npixels);
+        break;
+
+    default:
+        av_log(0, AV_LOG_ERROR, "sanm decoder: subcodec %u is not implemented. video may be garbled until next keyframe.\n", header.codec);
+        break;
+    }
+
+    copy_output(pctx, &header);
+    rotate_bufs(pctx, header.rotate_code);
+
+    return 0;
+}
+
+static int decode_frame(AVCodecContext* pav_ctx, void* poutput, int* poutput_size, uint8_t* pinput, int input_size)
+{
+    sanm_ctx* pctx = pav_ctx->priv_data;
+
+    if (pctx->output->data[0])
+    {
+        pav_ctx->release_buffer(pav_ctx, pctx->output);
+    }
+
+    if (!pctx->version && dispatch_codec1(pctx, pinput, input_size))
+    {
+        return -1;
+    }
+
+    if (pctx->version && dispatch_codec(pctx, pinput))
+    {
+        return -1;
+    }
+
+    *poutput_size = sizeof(AVFrame);
+    *((AVFrame*) poutput) = *pctx->output;
+
+    return input_size;
+}
+
+AVCodec sanm_decoder =
+{
+    "sanm",
+    CODEC_TYPE_VIDEO,
+    CODEC_ID_SANM,
+    sizeof(sanm_ctx),
+    decode_init,
+    0,
+    decode_end,
+    decode_frame
+};
Index: libavcodec/allcodecs.c
===================================================================
--- libavcodec/allcodecs.c	(revision 16395)
+++ libavcodec/allcodecs.c	(working copy)
@@ -134,6 +134,7 @@
     REGISTER_ENCDEC  (RV20, rv20);
     REGISTER_DECODER (RV30, rv30);
     REGISTER_DECODER (RV40, rv40);
+    REGISTER_DECODER (SANM, sanm);
     REGISTER_ENCDEC  (SGI, sgi);
     REGISTER_DECODER (SMACKER, smacker);
     REGISTER_DECODER (SMC, smc);
Index: libavcodec/avcodec.h
===================================================================
--- libavcodec/avcodec.h	(revision 16395)
+++ libavcodec/avcodec.h	(working copy)
@@ -190,6 +190,7 @@
     CODEC_ID_MOTIONPIXELS,
     CODEC_ID_TGV,
     CODEC_ID_TGQ,
+    CODEC_ID_SANM,
 
     /* various PCM "codecs" */
     CODEC_ID_PCM_S16LE= 0x10000,
Index: libavformat/Makefile
===================================================================
--- libavformat/Makefile	(revision 16395)
+++ libavformat/Makefile	(working copy)
@@ -32,6 +32,7 @@
 OBJS-$(CONFIG_AVS_DEMUXER)               += avs.o vocdec.o voc.o
 OBJS-$(CONFIG_BETHSOFTVID_DEMUXER)       += bethsoftvid.o
 OBJS-$(CONFIG_BFI_DEMUXER)               += bfi.o
+OBJS-$(CONFIG_BINK_DEMUXER)              += bink.o
 OBJS-$(CONFIG_C93_DEMUXER)               += c93.o vocdec.o voc.o
 OBJS-$(CONFIG_CRC_MUXER)                 += crcenc.o
 OBJS-$(CONFIG_DAUD_DEMUXER)              += daud.o
Index: libavformat/sanm.c
===================================================================
--- libavformat/sanm.c	(revision 0)
+++ libavformat/sanm.c	(revision 0)
@@ -0,0 +1,395 @@
+/*
+ * LucasArts Smush v2 demuxer
+ * Copyright (c) 2006 Cyril Zorin
+ * <firstname dot lastname at gmail dot com>
+ *
+ * This library 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 of
+ * the License, or (at your option) any later version.
+ *
+ * This library 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 this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ *
+ */
+
+/**
+ * @file sanm.c
+ * LucasArts Smush v2 demuxer
+ */
+
+/*
+ * Based on http://wiki.multimedia.cx/index.php?title=SANM and
+ * http://wiki.multimedia.cx/index.php?title=VIMA
+ */
+
+#include "avformat.h"
+#include "avio.h"
+
+typedef struct sanm_vinfo
+{
+    int width, height;
+
+    int nframes, iframe;
+    size_t stream_index;
+    int64_t pts;
+    int subversion;
+    uint32_t palette[256];
+} sanm_vinfo;
+
+typedef struct sanm_ainfo
+{
+    int freq, nchannels;
+    size_t stream_index;
+    int64_t pts;
+
+} sanm_ainfo;
+
+typedef struct sanm_ctx
+{
+    sanm_vinfo vinfo;
+    sanm_ainfo ainfo;
+    int version;
+} sanm_ctx;
+
+static int sanm_probe(AVProbeData* p)
+{
+    int score = 0;
+
+    if (p->buf_size >= 4
+        && (AV_RL32(p->buf) == MKTAG('S', 'A', 'N', 'M')
+         || AV_RL32(p->buf) == MKTAG('A', 'N', 'I', 'M')))
+    {
+        score = AVPROBE_SCORE_MAX;
+    }
+
+    return score;
+}
+
+static int read_vinfo1(ByteIOContext* pbuf, sanm_vinfo* pvinfo)
+{
+    int64_t endpos;
+    uint32_t size, sig = get_be32(pbuf);
+    int i;
+    if (sig != MKBETAG('A', 'H', 'D', 'R'))
+    {
+        return -1;
+    }
+
+    size = get_be32(pbuf);
+    endpos = url_ftell(pbuf) + size;
+
+    pvinfo->subversion = get_le16(pbuf);
+    pvinfo->nframes = get_le16(pbuf);
+
+    get_le16(pbuf); // skip pad
+    pvinfo->width = 0;
+    pvinfo->height = 0;
+
+    for(i = 0; i < 256; i++)
+        pvinfo->palette[i] = get_be24(pbuf);
+
+    url_fseek(pbuf, endpos, SEEK_SET);
+
+    return 0;
+}
+
+static int read_vinfo(ByteIOContext* pbuf, sanm_vinfo* pvinfo)
+{
+    int64_t endpos;
+    uint32_t size, sig = get_be32(pbuf);
+    if (sig != MKBETAG('S', 'H', 'D', 'R'))
+    {
+        return -1;
+    }
+
+    size = get_be32(pbuf);
+    endpos = url_ftell(pbuf) + size;
+
+    get_le16(pbuf); // skip version
+
+    pvinfo->nframes = get_le32(pbuf);
+
+    get_le16(pbuf); // skip pad
+    pvinfo->width = get_le16(pbuf);
+    pvinfo->height = get_le16(pbuf);
+    get_le16(pbuf); // skip pad
+
+    url_fseek(pbuf, endpos, SEEK_SET);
+
+    return 0;
+}
+
+static int read_ainfo(ByteIOContext* pbuf, sanm_ainfo* painfo)
+{
+    uint32_t sig, size;
+    int64_t endpos;
+    int done;
+
+    painfo->nchannels = 0;
+
+    sig = get_be32(pbuf);
+    if (sig != MKBETAG('F', 'L', 'H', 'D'))
+    {
+        return -1;
+    }
+
+    size = get_be32(pbuf);
+    endpos = url_ftell(pbuf) + size;
+
+    done = 0;
+    while (!done)
+    {
+        sig = get_be32(pbuf);
+        size = get_be32(pbuf);
+
+        switch (sig)
+        {
+        case MKBETAG('W', 'a', 'v', 'e'):
+            done = 1;
+            painfo->freq = get_le32(pbuf);
+            painfo->nchannels = get_le32(pbuf);
+            break;
+
+        case MKBETAG('B', 'l', '1', '6'):
+            url_fseek(pbuf, size, SEEK_CUR);
+            break;
+
+        default:
+            done = 1;
+            break;
+        }
+    }
+
+    url_fseek(pbuf, endpos, SEEK_SET);
+
+    return 0;
+}
+
+static int init_vinfo(AVStream* pstream, sanm_ctx *pctx)
+{
+    sanm_vinfo* pvinfo = &pctx->vinfo;
+
+    pvinfo->stream_index = pstream->index;
+    pstream->codec->codec_type = CODEC_TYPE_VIDEO;
+    pstream->codec->codec_id = CODEC_ID_SANM;
+    pstream->codec->codec_tag = MKBETAG('S', 'A', 'N', 'M');
+    pstream->codec->width = pvinfo->width;
+    pstream->codec->height = pvinfo->height;
+
+    av_set_pts_info(pstream, 64, 1, 15);
+    pvinfo->pts = 0;
+    pvinfo->iframe = 0;
+
+    if(!pctx->version){
+        int i;
+        pstream->codec->extradata = av_malloc(1024+2);
+        pstream->codec->extradata_size = 1024 + 2;
+        AV_WL16(pstream->codec->extradata, pvinfo->subversion);
+        for(i = 0; i < 256; i++)
+            AV_WL32(pstream->codec->extradata + 2 + i*4, pvinfo->palette[i]);
+    }
+
+    return 0;
+}
+
+/*
+static int init_ainfo(AVStream* pstream, sanm_ainfo* painfo)
+{
+    painfo->stream_index = pstream->index;
+    pstream->codec->codec_type = CODEC_TYPE_AUDIO;
+    pstream->codec->codec_id = CODEC_ID_VIMA;
+    pstream->codec->codec_tag = 0;
+    pstream->codec->channels = painfo->nchannels;
+    pstream->codec->sample_rate = painfo->freq;
+    pstream->codec->bits_per_sample = 16;
+
+    av_set_pts_info(pstream, 64, 1, 15);
+    painfo->pts = 0;
+
+    return 0;
+}
+*/
+
+static int check_preamble(ByteIOContext* pbuf)
+{
+    uint32_t movie_sig = get_be32(pbuf);
+    switch(movie_sig){
+    case MKBETAG('A', 'N', 'I', 'M'):
+        return 0;
+    case MKBETAG('S', 'A', 'N', 'M'):
+        return 1;
+    default:
+        return -1;
+    }
+}
+
+static int sanm_read_header(AVFormatContext* paf_ctx, AVFormatParameters* pparams)
+{
+    ByteIOContext* pbuf = paf_ctx->pb;
+    sanm_ctx* pctx = paf_ctx->priv_data;
+    AVStream* pvstream;
+    AVStream* pastream;
+
+    pctx->version = check_preamble(pbuf);
+    if (pctx->version == -1)
+    {
+        av_log(NULL,0,"Wrong magic\n");
+        return -1;
+    }
+
+    get_be32(pbuf); // skip movie size
+
+    if (!pctx->version && read_vinfo1(pbuf, &pctx->vinfo))
+    {
+        av_log(NULL,0,"wrong vinfo\n");
+        return -1;
+    }
+    if (pctx->version && read_vinfo(pbuf, &pctx->vinfo))
+    {
+        av_log(NULL,0,"wrong vinfo\n");
+        return -1;
+    }
+
+    pvstream = av_new_stream(paf_ctx, 0);
+    if (!pvstream)
+    {
+        return AVERROR_NOMEM;
+    }
+
+    if (init_vinfo(pvstream, pctx))
+    {
+        av_log(NULL,0,"error initing vinfo\n");
+        return -1;
+    }
+
+    if (pctx->version && read_ainfo(pbuf, &pctx->ainfo))
+    {
+        av_log(NULL,0,"wrong ainfo\n");
+        return -1;
+    }
+
+    /*
+    if (pctx->ainfo.nchannels)
+    {
+        pastream = av_new_stream(paf_ctx, 0);
+        if (!pastream)
+        {
+            return AVERROR_NOMEM;
+        }
+
+        if (init_ainfo(pastream, &pctx->ainfo))
+        {
+            return -1;
+        }
+    }
+    */
+
+    return 0;
+}
+
+static int sanm_read_packet(AVFormatContext* paf_ctx, AVPacket* ppacket)
+{
+    sanm_ctx* pctx = paf_ctx->priv_data;
+    ByteIOContext* pbuf = paf_ctx->pb;
+    uint32_t sig, size;
+    int64_t endpos;
+    int done;
+
+    done = 0;
+    while (!done)
+    {
+        if (url_feof(pbuf))
+        {
+            return pctx->vinfo.iframe == pctx->vinfo.nframes ? -EIO : AVERROR_IO;
+        }
+
+        sig = get_be32(pbuf);
+        size = get_be32(pbuf);
+
+        endpos = url_ftell(pbuf) + size;
+
+        switch (sig)
+        {
+        case MKBETAG('F', 'R', 'M', 'E'):
+            ++pctx->vinfo.iframe;
+            if(!pctx->version){
+                if (size != av_get_packet(pbuf, ppacket, size))
+                {
+                    return AVERROR_IO;
+                }
+
+                ppacket->stream_index = pctx->vinfo.stream_index;
+                ppacket->pts = pctx->vinfo.pts;
+                ++pctx->vinfo.pts;
+
+                done = 1;
+            }
+            break;
+
+        case MKBETAG('B', 'l', '1', '6'):
+            if (size != av_get_packet(pbuf, ppacket, size))
+            {
+                return AVERROR_IO;
+            }
+
+            ppacket->stream_index = pctx->vinfo.stream_index;
+            ppacket->pts = pctx->vinfo.pts;
+            ++pctx->vinfo.pts;
+
+            done = 1;
+            break;
+
+	    /* TODO: uncomment the below code when there is audio api
+	       support for larger/dynamic frame sizes. */
+/*
+        case MKBETAG('W', 'a', 'v', 'e'):
+            if (av_new_packet(ppacket, size + FF_INPUT_BUFFER_PADDING_SIZE))
+            {
+                return AVERROR_NOMEM;
+            }
+
+            if (get_buffer(pbuf, ppacket->data, size) < size)
+            {
+                return AVERROR_IO;
+            }
+
+            ppacket->stream_index = pctx->ainfo.stream_index;
+            ppacket->pts = pctx->ainfo.pts;
+            ++pctx->ainfo.pts;
+
+            done = 1;
+            break;
+*/
+
+        default:
+            url_fseek(pbuf, size, SEEK_CUR);
+            break;
+        }
+    }
+
+    return 0;
+}
+
+static int sanm_read_close(AVFormatContext* paf_ctx)
+{
+    return 0;
+}
+
+AVInputFormat sanm_demuxer =
+{
+    "sanm",
+    "LucasArts Smush",
+    sizeof(sanm_ctx),
+    sanm_probe,
+    sanm_read_header,
+    sanm_read_packet,
+    sanm_read_close
+};
Index: libavformat/allformats.c
===================================================================
--- libavformat/allformats.c	(revision 16395)
+++ libavformat/allformats.c	(working copy)
@@ -167,6 +168,7 @@
     REGISTER_DEMUXER  (RPL, rpl);
     REGISTER_MUXER    (RTP, rtp);
     REGISTER_DEMUXER  (RTSP, rtsp);
+    REGISTER_DEMUXER  (SANM, sanm);
     REGISTER_DEMUXER  (SDP, sdp);
 #ifdef CONFIG_SDP_DEMUXER
     av_register_rtp_dynamic_payload_handlers();



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