Merge remote-tracking branch 'qatar/master'

[ffmpeg] / libavcodec / pnmdec.c

diff --git a/libavcodec/pnmdec.c b/libavcodec/pnmdec.c
index 8185a4fc16959b98b7b79b41df87fdbf98a00824..c49b019b1700b2540c0843b5924597b696ac6a3b 100644 (file)
--- a/libavcodec/pnmdec.c
+++ b/libavcodec/pnmdec.c
@@ -2,25 +2,24 @@
  * PNM image format
  * Copyright (c) 2002, 2003 Fabrice Bellard
  *
- * 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 "avcodec.h"
-#include "bytestream.h"
 #include "put_bits.h"
 #include "pnm.h"
 
@@ -33,7 +32,7 @@ static int pnm_decode_frame(AVCodecContext *avctx, void *data,
     PNMContext * const s = avctx->priv_data;
     AVFrame *picture     = data;
     AVFrame * const p    = &s->picture;
-    int i, j, n, linesize, h, upgrade = 0;
+    int i, j, n, linesize, h, upgrade = 0, is_mono = 0;
     unsigned char *ptr;
     int components, sample_len;
 
@@ -58,11 +57,21 @@ static int pnm_decode_frame(AVCodecContext *avctx, void *data,
     switch (avctx->pix_fmt) {
     default:
         return -1;
+    case PIX_FMT_RGBA64BE:
+        n = avctx->width * 8;
+        components=4;
+        sample_len=16;
+        goto do_read;
     case PIX_FMT_RGB48BE:
         n = avctx->width * 6;
         components=3;
         sample_len=16;
         goto do_read;
+    case PIX_FMT_RGBA:
+        n = avctx->width * 4;
+        components=4;
+        sample_len=8;
+        goto do_read;
     case PIX_FMT_RGB24:
         n = avctx->width * 3;
         components=3;
@@ -75,6 +84,11 @@ static int pnm_decode_frame(AVCodecContext *avctx, void *data,
         if (s->maxval < 255)
             upgrade = 1;
         goto do_read;
+    case PIX_FMT_GRAY8A:
+        n = avctx->width * 2;
+        components=2;
+        sample_len=8;
+        goto do_read;
     case PIX_FMT_GRAY16BE:
     case PIX_FMT_GRAY16LE:
         n = avctx->width * 2;
@@ -88,26 +102,34 @@ static int pnm_decode_frame(AVCodecContext *avctx, void *data,
         n = (avctx->width + 7) >> 3;
         components=1;
         sample_len=1;
+        is_mono = 1;
     do_read:
         ptr      = p->data[0];
         linesize = p->linesize[0];
         if (s->bytestream + n * avctx->height > s->bytestream_end)
             return -1;
-        if(s->type < 4){
+        if(s->type < 4 || (is_mono && s->type==7)){
             for (i=0; i<avctx->height; i++) {
                 PutBitContext pb;
                 init_put_bits(&pb, ptr, linesize);
                 for(j=0; j<avctx->width * components; j++){
                     unsigned int c=0;
                     int v=0;
+                    if(s->type < 4)
                     while(s->bytestream < s->bytestream_end && (*s->bytestream < '0' || *s->bytestream > '9' ))
                         s->bytestream++;
                     if(s->bytestream >= s->bytestream_end)
                         return -1;
-                    do{
-                        v= 10*v + c;
-                        c= (*s->bytestream++) - '0';
-                    }while(c <= 9);
+                    if (is_mono) {
+                        /* read a single digit */
+                        v = (*s->bytestream++)&1;
+                    } else {
+                        /* read a sequence of digits */
+                        do {
+                            v = 10*v + c;
+                            c = (*s->bytestream++) - '0';
+                        } while (c <= 9);
+                    }
                     put_bits(&pb, sample_len, (((1<<sample_len)-1)*v + (s->maxval>>1))/s->maxval);
                 }
                 flush_put_bits(&pb);
@@ -161,24 +183,6 @@ static int pnm_decode_frame(AVCodecContext *avctx, void *data,
             }
         }
         break;
-    case PIX_FMT_RGB32:
-        ptr      = p->data[0];
-        linesize = p->linesize[0];
-        if (s->bytestream + avctx->width * avctx->height * 4 > s->bytestream_end)
-            return -1;
-        for (i = 0; i < avctx->height; i++) {
-            int j, r, g, b, a;
-
-            for (j = 0; j < avctx->width; j++) {
-                r = *s->bytestream++;
-                g = *s->bytestream++;
-                b = *s->bytestream++;
-                a = *s->bytestream++;
-                ((uint32_t *)ptr)[j] = (a << 24) | (r << 16) | (g << 8) | b;
-            }
-            ptr += linesize;
-        }
-        break;
     }
     *picture   = s->picture;
     *data_size = sizeof(AVPicture);