* Sun Rasterfile (.sun/.ras/im{1,8,24}/.sunras) image decoder
* Copyright (c) 2007, 2008 Ivo van Poorten
*
- * This file is part of Libav.
+ * This file is part of FFmpeg.
*
- * Libav is free software; you can redistribute it and/or
+ * 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.
*
- * Libav is distributed in the hope that it will be useful,
+ * 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 Libav; if not, write to the Free Software
+ * License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "libavutil/intreadwrite.h"
#include "libavutil/imgutils.h"
#include "avcodec.h"
-
-#define RAS_MAGIC 0x59a66a95
-
-/* The Old and Standard format types indicate that the image data is
- * uncompressed. There is no difference between the two formats. */
-#define RT_OLD 0
-#define RT_STANDARD 1
-
-/* The Byte-Encoded format type indicates that the image data is compressed
- * using a run-length encoding scheme. */
-#define RT_BYTE_ENCODED 2
-
-/* The RGB format type indicates that the image is uncompressed with reverse
- * component order from Old and Standard (RGB vs BGR). */
-#define RT_FORMAT_RGB 3
-
-/* The TIFF and IFF format types indicate that the raster file was originally
- * converted from either of these file formats. We do not have any samples or
- * documentation of the format details. */
-#define RT_FORMAT_TIFF 4
-#define RT_FORMAT_IFF 5
-
-/* The Experimental format type is implementation-specific and is generally an
- * indication that the image file does not conform to the Sun Raster file
- * format specification. */
-#define RT_EXPERIMENTAL 0xffff
+#include "sunrast.h"
typedef struct SUNRASTContext {
AVFrame picture;
AVFrame *picture = data;
AVFrame * const p = &s->picture;
unsigned int w, h, depth, type, maptype, maplength, stride, x, y, len, alen;
- uint8_t *ptr;
+ uint8_t *ptr, *ptr2 = NULL;
const uint8_t *bufstart = buf;
int ret;
maplength = AV_RB32(buf + 28);
buf += 32;
- if (type == RT_FORMAT_TIFF || type == RT_FORMAT_IFF || type == RT_EXPERIMENTAL) {
+ if (type == RT_EXPERIMENTAL) {
av_log_ask_for_sample(avctx, "unsupported (compression) type\n");
return AVERROR_PATCHWELCOME;
}
av_log(avctx, AV_LOG_ERROR, "invalid image size\n");
return AVERROR_INVALIDDATA;
}
- if (maptype & ~1) {
+ if (maptype == RMT_RAW) {
+ av_log_ask_for_sample(avctx, "unsupported colormap type\n");
+ return AVERROR_PATCHWELCOME;
+ }
+ if (maptype > RMT_RAW) {
av_log(avctx, AV_LOG_ERROR, "invalid colormap type\n");
return AVERROR_INVALIDDATA;
}
+ if (type == RT_FORMAT_TIFF || type == RT_FORMAT_IFF) {
+ av_log(avctx, AV_LOG_ERROR, "unsupported (compression) type\n");
+ return -1;
+ }
switch (depth) {
case 1:
- avctx->pix_fmt = PIX_FMT_MONOWHITE;
+ avctx->pix_fmt = maplength ? PIX_FMT_PAL8 : PIX_FMT_MONOWHITE;
+ break;
+ case 4:
+ avctx->pix_fmt = maplength ? PIX_FMT_PAL8 : PIX_FMT_NONE;
break;
case 8:
avctx->pix_fmt = maplength ? PIX_FMT_PAL8 : PIX_FMT_GRAY8;
case 24:
avctx->pix_fmt = (type == RT_FORMAT_RGB) ? PIX_FMT_RGB24 : PIX_FMT_BGR24;
break;
+ case 32:
+ avctx->pix_fmt = (type == RT_FORMAT_RGB) ? PIX_FMT_0RGB : PIX_FMT_0BGR;
+ break;
default:
av_log(avctx, AV_LOG_ERROR, "invalid depth\n");
return AVERROR_INVALIDDATA;
if (buf_end - buf < maplength)
return AVERROR_INVALIDDATA;
- if (depth != 8 && maplength) {
+ if (depth > 8 && maplength) {
av_log(avctx, AV_LOG_WARNING, "useless colormap found or file is corrupted, trying to recover\n");
} else if (maplength) {
ptr = p->data[1];
for (x = 0; x < len; x++, ptr += 4)
- *(uint32_t *)ptr = (buf[x] << 16) + (buf[len + x] << 8) + buf[len + len + x];
+ *(uint32_t *)ptr = (0xFF<<24) + (buf[x]<<16) + (buf[len+x]<<8) + buf[len+len+x];
}
buf += maplength;
+ if (maplength && depth < 8) {
+ ptr = ptr2 = av_malloc((w + 15) * h);
+ if (!ptr)
+ return AVERROR(ENOMEM);
+ stride = (w + 15 >> 3) * depth;
+ } else {
ptr = p->data[0];
stride = p->linesize[0];
+ }
/* scanlines are aligned on 16 bit boundaries */
len = (depth * w + 7) >> 3;
if (buf_end - buf < 1)
return AVERROR_INVALIDDATA;
- if ((value = *buf++) == 0x80) {
+ if ((value = *buf++) == RLE_TRIGGER) {
run = *buf++ + 1;
if (run != 1)
value = *buf++;
buf += alen;
}
}
+ if (avctx->pix_fmt == PIX_FMT_PAL8 && depth < 8) {
+ uint8_t *ptr_free = ptr2;
+ ptr = p->data[0];
+ for (y=0; y<h; y++) {
+ for (x = 0; x < (w + 7 >> 3) * depth; x++) {
+ if (depth == 1) {
+ ptr[8*x] = ptr2[x] >> 7;
+ ptr[8*x+1] = ptr2[x] >> 6 & 1;
+ ptr[8*x+2] = ptr2[x] >> 5 & 1;
+ ptr[8*x+3] = ptr2[x] >> 4 & 1;
+ ptr[8*x+4] = ptr2[x] >> 3 & 1;
+ ptr[8*x+5] = ptr2[x] >> 2 & 1;
+ ptr[8*x+6] = ptr2[x] >> 1 & 1;
+ ptr[8*x+7] = ptr2[x] & 1;
+ } else {
+ ptr[2*x] = ptr2[x] >> 4;
+ ptr[2*x+1] = ptr2[x] & 0xF;
+ }
+ }
+ ptr += p->linesize[0];
+ ptr2 += (w + 15 >> 3) * depth;
+ }
+ av_freep(&ptr_free);
+ }
*picture = s->picture;
*data_size = sizeof(AVFrame);
projects / ffmpeg / blobdiff