Merge remote-tracking branch 'qatar/master'

[ffmpeg] / libavcodec / sunrast.c

diff --git a/libavcodec/sunrast.c b/libavcodec/sunrast.c
index a471aee3ed96cc895e8c85f5f2f6f541df1fa1f5..b602c9dd93a8fdec2aee233c4e5c180e2b6685d3 100644 (file)
--- a/libavcodec/sunrast.c
+++ b/libavcodec/sunrast.c
@@ -2,20 +2,20 @@
  * 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
  */
 
@@ -68,7 +68,7 @@ static int sunrast_decode_frame(AVCodecContext *avctx, void *data,
     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;
 
     if (avpkt->size < 32)
@@ -87,11 +87,11 @@ static int sunrast_decode_frame(AVCodecContext *avctx, void *data,
     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(avctx, AV_LOG_ERROR, "unsupported (compression) type\n");
         return -1;
     }
-    if (type < RT_OLD || type > RT_FORMAT_IFF) {
+    if (type > RT_FORMAT_IFF) {
         av_log(avctx, AV_LOG_ERROR, "invalid (compression) type\n");
         return -1;
     }
@@ -104,17 +104,27 @@ static int sunrast_decode_frame(AVCodecContext *avctx, void *data,
         return -1;
     }
 
+    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 = PIX_FMT_PAL8;
+            avctx->pix_fmt = maplength ? PIX_FMT_PAL8 : PIX_FMT_GRAY8;
             break;
         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_RGB0 : PIX_FMT_BGR0;
+            break;
         default:
             av_log(avctx, AV_LOG_ERROR, "invalid depth\n");
             return -1;
@@ -135,10 +145,10 @@ static int sunrast_decode_frame(AVCodecContext *avctx, void *data,
     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 (depth == 8) {
+    } else if (maplength) {
         unsigned int len = maplength / 3;
 
         if (!maplength) {
@@ -152,13 +162,20 @@ static int sunrast_decode_frame(AVCodecContext *avctx, void *data,
 
         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;
@@ -199,6 +216,30 @@ static int sunrast_decode_frame(AVCodecContext *avctx, void *data,
             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);