diff -r 29ecd5cb86b3 -r d43ce56a1534 gst_plugins_good/ext/jpeg/smokecodec.c
--- a/gst_plugins_good/ext/jpeg/smokecodec.c	Tue Jul 06 14:35:10 2010 +0300
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,715 +0,0 @@
-/* Smoke codec
- * Copyright (C) <2004> Wim Taymans <wim@fluendo.com> 
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library 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
- * Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- * Boston, MA 02111-1307, USA.
- */
-
-
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <math.h>
-
-/* this is a hack hack hack to get around jpeglib header bugs... */
-#ifdef HAVE_STDLIB_H
-# undef HAVE_STDLIB_H
-#endif
-#include <jpeglib.h>
-
-#include "smokecodec.h"
-#include "smokeformat.h"
-
-#ifdef SYMBIAN
-#define DEBUG(a...)   printf( a );
-#else // SYMBIAN
-#ifndef WIN32
-//#define DEBUG(a...)   printf( a );
-#define DEBUG(a,...)
-#else
-#include <gst/gstinfo.h>
-#define DEBUG GST_DEBUG
-#endif
-#endif // SYMBIAN
-
-
-struct _SmokeCodecInfo
-{
-  unsigned int width;
-  unsigned int height;
-  unsigned int fps_num;
-  unsigned int fps_denom;
-
-  unsigned int minquality;
-  unsigned int maxquality;
-  unsigned int bitrate;
-  unsigned int threshold;
-
-  unsigned int refdec;
-
-  unsigned char **line[3];
-  unsigned char *compbuf[3];
-
-  struct jpeg_error_mgr jerr;
-
-  struct jpeg_compress_struct cinfo;
-  struct jpeg_destination_mgr jdest;
-
-  struct jpeg_decompress_struct dinfo;
-  struct jpeg_source_mgr jsrc;
-
-  int need_keyframe;
-  unsigned char *reference;
-};
-
-static void
-smokecodec_init_destination (j_compress_ptr cinfo)
-{
-}
-
-static int
-smokecodec_flush_destination (j_compress_ptr cinfo)
-{
-  return 1;
-}
-
-static void
-smokecodec_term_destination (j_compress_ptr cinfo)
-{
-}
-
-static void
-smokecodec_init_source (j_decompress_ptr cinfo)
-{
-}
-
-static int
-smokecodec_fill_input_buffer (j_decompress_ptr cinfo)
-{
-  return 1;
-}
-
-static void
-smokecodec_skip_input_data (j_decompress_ptr cinfo, long num_bytes)
-{
-}
-
-static int
-smokecodec_resync_to_restart (j_decompress_ptr cinfo, int desired)
-{
-  return 1;
-}
-
-static void
-smokecodec_term_source (j_decompress_ptr cinfo)
-{
-}
-
-
-int
-smokecodec_encode_new (SmokeCodecInfo ** info,
-    const unsigned int width,
-    const unsigned int height,
-    const unsigned int fps_num, const unsigned int fps_denom)
-{
-  SmokeCodecInfo *newinfo;
-  int i, j;
-  unsigned char *base[3];
-
-  if (!info)
-    return SMOKECODEC_NULLPTR;
-  if ((width & 0xf) || (height & 0xf))
-    return SMOKECODEC_WRONGSIZE;
-
-  newinfo = malloc (sizeof (SmokeCodecInfo));
-  if (!newinfo) {
-    return SMOKECODEC_NOMEM;
-  }
-  newinfo->width = width;
-  newinfo->height = height;
-  newinfo->fps_num = fps_num;
-  newinfo->fps_denom = fps_denom;
-
-  /* setup jpeglib */
-  memset (&newinfo->cinfo, 0, sizeof (newinfo->cinfo));
-  memset (&newinfo->jerr, 0, sizeof (newinfo->jerr));
-  newinfo->cinfo.err = jpeg_std_error (&newinfo->jerr);
-  jpeg_create_compress (&newinfo->cinfo);
-  newinfo->cinfo.input_components = 3;
-  jpeg_set_defaults (&newinfo->cinfo);
-
-  newinfo->cinfo.dct_method = JDCT_FASTEST;
-
-  newinfo->cinfo.raw_data_in = TRUE;
-  newinfo->cinfo.in_color_space = JCS_YCbCr;
-  newinfo->cinfo.comp_info[0].h_samp_factor = 2;
-  newinfo->cinfo.comp_info[0].v_samp_factor = 2;
-  newinfo->cinfo.comp_info[1].h_samp_factor = 1;
-  newinfo->cinfo.comp_info[1].v_samp_factor = 1;
-  newinfo->cinfo.comp_info[2].h_samp_factor = 1;
-  newinfo->cinfo.comp_info[2].v_samp_factor = 1;
-
-  newinfo->line[0] = malloc (DCTSIZE * 2 * sizeof (char *));
-  newinfo->line[1] = malloc (DCTSIZE * sizeof (char *));
-  newinfo->line[2] = malloc (DCTSIZE * sizeof (char *));
-  base[0] = newinfo->compbuf[0] = malloc (256 * 2 * DCTSIZE * 2 * DCTSIZE);
-  base[1] = newinfo->compbuf[1] = malloc (256 * DCTSIZE * DCTSIZE);
-  base[2] = newinfo->compbuf[2] = malloc (256 * DCTSIZE * DCTSIZE);
-
-  for (i = 0, j = 0; i < 2 * DCTSIZE; i += 2, j++) {
-    newinfo->line[0][i] = base[0];
-    base[0] += 2 * DCTSIZE * 256;
-    newinfo->line[0][i + 1] = base[0];
-    base[0] += 2 * DCTSIZE * 256;
-    newinfo->line[1][j] = base[1];
-    base[1] += DCTSIZE * 256;
-    newinfo->line[2][j] = base[2];
-    base[2] += DCTSIZE * 256;
-  }
-
-  newinfo->jdest.init_destination = smokecodec_init_destination;
-  newinfo->jdest.empty_output_buffer = smokecodec_flush_destination;
-  newinfo->jdest.term_destination = smokecodec_term_destination;
-  newinfo->cinfo.dest = &newinfo->jdest;
-
-  jpeg_suppress_tables (&newinfo->cinfo, FALSE);
-
-  memset (&newinfo->dinfo, 0, sizeof (newinfo->dinfo));
-  newinfo->dinfo.err = jpeg_std_error (&newinfo->jerr);
-  jpeg_create_decompress (&newinfo->dinfo);
-
-  newinfo->jsrc.init_source = smokecodec_init_source;
-  newinfo->jsrc.fill_input_buffer = smokecodec_fill_input_buffer;
-  newinfo->jsrc.skip_input_data = smokecodec_skip_input_data;
-  newinfo->jsrc.resync_to_restart = smokecodec_resync_to_restart;
-  newinfo->jsrc.term_source = smokecodec_term_source;
-  newinfo->dinfo.src = &newinfo->jsrc;
-
-  newinfo->need_keyframe = 1;
-  newinfo->threshold = 4000;
-  newinfo->minquality = 10;
-  newinfo->maxquality = 85;
-  newinfo->reference = malloc (3 * (width * height) / 2);
-  newinfo->refdec = 0;
-
-  *info = newinfo;
-
-  return SMOKECODEC_OK;
-}
-
-int
-smokecodec_decode_new (SmokeCodecInfo ** info)
-{
-  return smokecodec_encode_new (info, 16, 16, 1, 1);
-}
-
-int
-smokecodec_info_free (SmokeCodecInfo * info)
-{
-  free (info->line[0]);
-  free (info->line[1]);
-  free (info->line[2]);
-  free (info->compbuf[0]);
-  free (info->compbuf[1]);
-  free (info->compbuf[2]);
-  free (info->reference);
-  jpeg_destroy_compress (&info->cinfo);
-  jpeg_destroy_decompress (&info->dinfo);
-  free (info);
-
-  return SMOKECODEC_OK;
-}
-
-SmokeCodecResult
-smokecodec_set_quality (SmokeCodecInfo * info,
-    const unsigned int min, const unsigned int max)
-{
-  info->minquality = min;
-  info->maxquality = max;
-
-  return SMOKECODEC_OK;
-}
-
-SmokeCodecResult
-smokecodec_get_quality (SmokeCodecInfo * info,
-    unsigned int *min, unsigned int *max)
-{
-  *min = info->minquality;
-  *max = info->maxquality;
-
-  return SMOKECODEC_OK;
-}
-
-SmokeCodecResult
-smokecodec_set_threshold (SmokeCodecInfo * info, const unsigned int threshold)
-{
-  info->threshold = threshold;
-
-  return SMOKECODEC_OK;
-}
-
-SmokeCodecResult
-smokecodec_get_threshold (SmokeCodecInfo * info, unsigned int *threshold)
-{
-  *threshold = info->threshold;
-
-  return SMOKECODEC_OK;
-}
-
-SmokeCodecResult
-smokecodec_set_bitrate (SmokeCodecInfo * info, const unsigned int bitrate)
-{
-  info->bitrate = bitrate;
-
-  return SMOKECODEC_OK;
-}
-
-SmokeCodecResult
-smokecodec_get_bitrate (SmokeCodecInfo * info, unsigned int *bitrate)
-{
-  *bitrate = info->bitrate;
-
-  return SMOKECODEC_OK;
-}
-
-static void
-find_best_size (int blocks, unsigned int *width, unsigned int *height)
-{
-  int sqchng;
-  int w, h;
-  int best, bestw;
-  int free;
-
-  sqchng = ceil (sqrt (blocks));
-  w = sqchng;
-  h = sqchng;
-
-  DEBUG ("guess: %d %d\n", w, h);
-
-  free = w * h - blocks;
-  best = free;
-  bestw = w;
-
-  while (w < 256) {
-    DEBUG ("current: %d %d\n", w, h);
-    if (free < best) {
-      best = free;
-      bestw = w;
-      if (free == 0)
-        break;
-    }
-    // if we cannot reduce the height, increase width
-    if (free < w) {
-      w++;
-      free += h;
-    }
-    // reduce height while possible
-    while (free >= w) {
-      h--;
-      free -= w;
-    }
-  }
-  *width = bestw;
-  *height = (blocks + best) / bestw;
-}
-
-static int
-abs_diff (const unsigned char *in1, const unsigned char *in2, const int stride)
-{
-  int s;
-  int i, j, diff;
-
-  s = 0;
-
-  for (i = 0; i < 2 * DCTSIZE; i++) {
-    for (j = 0; j < 2 * DCTSIZE; j++) {
-      diff = in1[j] - in2[j];
-      s += diff * diff;
-    }
-    in1 += stride;
-    in2 += stride;
-  }
-  return s;
-}
-
-static void
-put (const unsigned char *src, unsigned char *dest,
-    int width, int height, int srcstride, int deststride)
-{
-  int i, j;
-
-  for (i = 0; i < height; i++) {
-    for (j = 0; j < width; j++) {
-      dest[j] = src[j];
-    }
-    src += srcstride;
-    dest += deststride;
-  }
-}
-
-/* encoding */
-SmokeCodecResult
-smokecodec_encode_id (SmokeCodecInfo * info,
-    unsigned char *out, unsigned int *outsize)
-{
-  int i;
-
-  *out++ = SMOKECODEC_TYPE_ID;
-  for (i = 0; i < strlen (SMOKECODEC_ID_STRING); i++) {
-    *out++ = SMOKECODEC_ID_STRING[i];
-  }
-  *out++ = 0;
-  *out++ = 1;
-  *out++ = 0;
-
-  *outsize = 9;
-
-  return SMOKECODEC_OK;
-}
-
-SmokeCodecResult
-smokecodec_encode (SmokeCodecInfo * info,
-    const unsigned char *in,
-    SmokeCodecFlags flags, unsigned char *out, unsigned int *outsize)
-{
-  unsigned int i, j, s;
-  const unsigned char *ip;
-  unsigned char *op;
-  unsigned int blocks, encoding;
-  unsigned int size;
-  unsigned int width, height;
-  unsigned int blocks_w, blocks_h;
-  unsigned int threshold;
-  unsigned int max;
-
-  if (info->need_keyframe) {
-    flags |= SMOKECODEC_KEYFRAME;
-    info->need_keyframe = 0;
-  }
-
-  if (flags & SMOKECODEC_KEYFRAME)
-    threshold = 0;
-  else
-    threshold = info->threshold;
-
-  ip = in;
-  op = info->reference;
-
-  width = info->width;
-  height = info->height;
-
-  blocks_w = width / (DCTSIZE * 2);
-  blocks_h = height / (DCTSIZE * 2);
-
-  max = blocks_w * blocks_h;
-
-  out[IDX_TYPE] = SMOKECODEC_TYPE_DATA;
-
-#define STORE16(var, pos, x) \
-   var[pos]   = (x >> 8); \
-   var[pos+1] = (x & 0xff);
-#define STORE32(var, pos, x) \
-   var[pos]   = ((x >> 24) & 0xff); \
-   var[pos+1] = ((x >> 16) & 0xff); \
-   var[pos+2] = ((x >> 8) & 0xff); \
-   var[pos+3] =  (x & 0xff);
-
-  /* write dimension */
-  STORE16 (out, IDX_WIDTH, width);
-  STORE16 (out, IDX_HEIGHT, height);
-
-  /* write framerate */
-  STORE32 (out, IDX_FPS_NUM, info->fps_num);
-  STORE32 (out, IDX_FPS_DENOM, info->fps_denom);
-
-  if (!(flags & SMOKECODEC_KEYFRAME)) {
-    int block = 0;
-
-    blocks = 0;
-    for (i = 0; i < height; i += 2 * DCTSIZE) {
-      for (j = 0; j < width; j += 2 * DCTSIZE) {
-        s = abs_diff (ip, op, width);
-        if (s >= threshold) {
-          STORE16 (out, blocks * 2 + IDX_BLOCKS, block);
-          blocks++;
-        }
-
-        ip += 2 * DCTSIZE;
-        op += 2 * DCTSIZE;
-        block++;
-      }
-      ip += (2 * DCTSIZE - 1) * width;
-      op += (2 * DCTSIZE - 1) * width;
-    }
-    if (blocks == max) {
-      flags |= SMOKECODEC_KEYFRAME;
-      blocks = 0;
-      encoding = max;
-    } else {
-      encoding = blocks;
-    }
-  } else {
-    blocks = 0;
-    encoding = max;
-  }
-  STORE16 (out, IDX_NUM_BLOCKS, blocks);
-  out[IDX_FLAGS] = (flags & 0xff);
-
-  DEBUG ("blocks %d, encoding %d\n", blocks, encoding);
-
-  info->jdest.next_output_byte = &out[blocks * 2 + OFFS_PICT];
-  info->jdest.free_in_buffer = (*outsize) - OFFS_PICT;
-
-  if (encoding > 0) {
-    int quality;
-
-    if (!(flags & SMOKECODEC_KEYFRAME))
-      find_best_size (encoding, &blocks_w, &blocks_h);
-
-    DEBUG ("best: %d %d\n", blocks_w, blocks_h);
-
-    info->cinfo.image_width = blocks_w * DCTSIZE * 2;
-    info->cinfo.image_height = blocks_h * DCTSIZE * 2;
-
-    if (flags & SMOKECODEC_KEYFRAME) {
-      quality = (info->maxquality * 60) / 100;
-    } else {
-      quality =
-          info->maxquality - ((info->maxquality -
-              info->minquality) * blocks) / max;
-    }
-
-    DEBUG ("set q %d %d %d\n", quality, encoding, max);
-    jpeg_set_quality (&info->cinfo, quality, TRUE);
-    DEBUG ("start\n");
-    jpeg_start_compress (&info->cinfo, TRUE);
-
-    for (i = 0; i < encoding; i++) {
-      int pos;
-      int x, y;
-
-      if (flags & SMOKECODEC_KEYFRAME)
-        pos = i;
-      else
-        pos = (out[i * 2 + IDX_BLOCKS] << 8) | (out[i * 2 + IDX_BLOCKS + 1]);
-
-      x = pos % (width / (DCTSIZE * 2));
-      y = pos / (width / (DCTSIZE * 2));
-
-      ip = in + (x * (DCTSIZE * 2)) + (y * (DCTSIZE * 2) * width);
-      op = info->compbuf[0] + (i % blocks_w) * (DCTSIZE * 2);
-      put (ip, op, 2 * DCTSIZE, 2 * DCTSIZE, width, 256 * (DCTSIZE * 2));
-
-      ip = in + width * height + (x * DCTSIZE) + (y * DCTSIZE * width / 2);
-      op = info->compbuf[1] + (i % blocks_w) * (DCTSIZE);
-      put (ip, op, DCTSIZE, DCTSIZE, width / 2, 256 * DCTSIZE);
-
-      ip = in + 5 * (width * height) / 4 + (x * DCTSIZE) +
-          (y * DCTSIZE * width / 2);
-      op = info->compbuf[2] + (i % blocks_w) * (DCTSIZE);
-      put (ip, op, DCTSIZE, DCTSIZE, width / 2, 256 * DCTSIZE);
-
-      if ((i % blocks_w) == (blocks_w - 1) || (i == encoding - 1)) {
-        DEBUG ("write %d\n", pos);
-        jpeg_write_raw_data (&info->cinfo, info->line, 2 * DCTSIZE);
-      }
-    }
-    DEBUG ("finish\n");
-    jpeg_finish_compress (&info->cinfo);
-  }
-
-  size = ((((*outsize) - OFFS_PICT - info->jdest.free_in_buffer) + 3) & ~3);
-  STORE16 (out, IDX_SIZE, size);
-
-  *outsize = size + blocks * 2 + OFFS_PICT;
-  DEBUG ("outsize %d\n", *outsize);
-
-  // and decode in reference frame again
-  if (info->refdec) {
-    smokecodec_decode (info, out, *outsize, info->reference);
-  } else {
-    memcpy (info->reference, in, 3 * (width * height) / 2);
-  }
-
-  return SMOKECODEC_OK;
-}
-
-SmokeCodecResult
-smokecodec_parse_id (SmokeCodecInfo * info,
-    const unsigned char *in, const unsigned int insize)
-{
-  int i;
-
-  if (insize < 4 + strlen (SMOKECODEC_ID_STRING)) {
-    return SMOKECODEC_WRONGVERSION;
-  }
-
-  if (*in++ != SMOKECODEC_TYPE_ID)
-    return SMOKECODEC_ERROR;
-
-  for (i = 0; i < strlen (SMOKECODEC_ID_STRING); i++) {
-    if (*in++ != SMOKECODEC_ID_STRING[i])
-      return SMOKECODEC_ERROR;
-  }
-  if (*in++ != 0 || *in++ != 1 || *in++ != 0)
-    return SMOKECODEC_ERROR;
-
-  return SMOKECODEC_OK;
-}
-
-#define READ16(var, pos, x) \
- x = var[pos]<<8 | var[pos+1];
-
-#define READ32(var, pos, x) \
- x = var[pos]<<24 | var[pos+1]<<16 | \
-     var[pos+2]<<8 | var[pos+3];
-
-/* decoding */
-SmokeCodecResult
-smokecodec_parse_header (SmokeCodecInfo * info,
-    const unsigned char *in,
-    const unsigned int insize,
-    SmokeCodecFlags * flags,
-    unsigned int *width,
-    unsigned int *height, unsigned int *fps_num, unsigned int *fps_denom)
-{
-
-  READ16 (in, IDX_WIDTH, *width);
-  READ16 (in, IDX_HEIGHT, *height);
-  *flags = in[IDX_FLAGS];
-  READ32 (in, IDX_FPS_NUM, *fps_num);
-  READ32 (in, IDX_FPS_DENOM, *fps_denom);
-
-  if (info->width != *width ||
-      info->height != *height ||
-      info->fps_num != *fps_num || info->fps_denom != *fps_denom) {
-    DEBUG ("new width: %d %d\n", *width, *height);
-
-    info->reference = realloc (info->reference, 3 * ((*width) * (*height)) / 2);
-    info->width = *width;
-    info->height = *height;
-    info->fps_num = *fps_num;
-    info->fps_denom = *fps_denom;
-  }
-
-  return SMOKECODEC_OK;
-}
-
-SmokeCodecResult
-smokecodec_decode (SmokeCodecInfo * info,
-    const unsigned char *in, const unsigned int insize, unsigned char *out)
-{
-  unsigned int width, height;
-  unsigned int fps_num, fps_denom;
-  SmokeCodecFlags flags;
-  int i, j;
-  int blocks_w, blocks_h;
-  int blockptr;
-  int blocks, decoding;
-  const unsigned char *ip;
-  unsigned char *op;
-  int res;
-
-  smokecodec_parse_header (info, in, insize, &flags, &width, &height,
-      &fps_num, &fps_denom);
-
-  READ16 (in, IDX_NUM_BLOCKS, blocks);
-  DEBUG ("blocks %d\n", blocks);
-
-  if (flags & SMOKECODEC_KEYFRAME)
-    decoding = width / (DCTSIZE * 2) * height / (DCTSIZE * 2);
-  else
-    decoding = blocks;
-
-  if (decoding > 0) {
-    info->jsrc.next_input_byte = &in[blocks * 2 + OFFS_PICT];
-    info->jsrc.bytes_in_buffer = insize - (blocks * 2 + OFFS_PICT);
-
-    DEBUG ("header %02x %d\n", in[blocks * 2 + OFFS_PICT], insize);
-    res = jpeg_read_header (&info->dinfo, TRUE);
-    DEBUG ("header %d %d %d\n", res, info->dinfo.image_width,
-        info->dinfo.image_height);
-
-    blocks_w = info->dinfo.image_width / (2 * DCTSIZE);
-    blocks_h = info->dinfo.image_height / (2 * DCTSIZE);
-
-    info->dinfo.output_width = info->dinfo.image_width;
-    info->dinfo.output_height = info->dinfo.image_height;
-
-    DEBUG ("start\n");
-    info->dinfo.do_fancy_upsampling = FALSE;
-    info->dinfo.do_block_smoothing = FALSE;
-    info->dinfo.out_color_space = JCS_YCbCr;
-    info->dinfo.dct_method = JDCT_IFAST;
-    info->dinfo.raw_data_out = TRUE;
-    jpeg_start_decompress (&info->dinfo);
-
-    blockptr = 0;
-
-    for (i = 0; i < blocks_h; i++) {
-      DEBUG ("read\n");
-      jpeg_read_raw_data (&info->dinfo, info->line, 2 * DCTSIZE);
-
-      DEBUG ("copy %d\n", blocks_w);
-      for (j = 0; j < blocks_w; j++) {
-        int pos;
-        int x, y;
-
-        if (flags & SMOKECODEC_KEYFRAME)
-          pos = blockptr;
-        else
-          READ16 (in, blockptr * 2 + IDX_BLOCKS, pos);
-
-        x = pos % (width / (DCTSIZE * 2));
-        y = pos / (width / (DCTSIZE * 2));
-
-        DEBUG ("block %d %d %d\n", pos, x, y);
-
-        ip = info->compbuf[0] + j * (DCTSIZE * 2);
-        op = info->reference + (x * (DCTSIZE * 2)) +
-            (y * (DCTSIZE * 2) * width);
-        put (ip, op, 2 * DCTSIZE, 2 * DCTSIZE, 256 * (DCTSIZE * 2), width);
-
-        ip = info->compbuf[1] + j * (DCTSIZE);
-        op = info->reference + width * height + (x * DCTSIZE) +
-            (y * DCTSIZE * width / 2);
-        put (ip, op, DCTSIZE, DCTSIZE, 256 * DCTSIZE, width / 2);
-
-        ip = info->compbuf[2] + j * (DCTSIZE);
-        op = info->reference + 5 * (width * height) / 4 + (x * DCTSIZE) +
-            (y * DCTSIZE * width / 2);
-        put (ip, op, DCTSIZE, DCTSIZE, 256 * DCTSIZE, width / 2);
-
-        DEBUG ("block done %d %d %d\n", pos, x, y);
-        blockptr++;
-        if (blockptr >= decoding)
-          break;
-      }
-    }
-    DEBUG ("finish\n");
-    jpeg_finish_decompress (&info->dinfo);
-  }
-
-  DEBUG ("copy\n");
-  if (out != info->reference)
-    memcpy (out, info->reference, 3 * (width * height) / 2);
-  DEBUG ("copy done\n");
-
-  return SMOKECODEC_OK;
-}