X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavcodec%2Fpngdec.c;h=b439329e36aec44048264f6f00294e31bc095389;hb=107f55cb01d2333541b8887194c487a6c6bc1ba1;hp=609b21e2aa9969403f1722449376aa26e1f60dd2;hpb=1fa8ff38e47b3e0fc63e2a2e8fbbcf9e4fb071c5;p=ffmpeg

diff --git a/libavcodec/pngdec.c b/libavcodec/pngdec.c
index 609b21e2aa9..b439329e36a 100644
--- a/libavcodec/pngdec.c
+++ b/libavcodec/pngdec.c
@@ -494,14 +494,17 @@ static int decode_frame(AVCodecContext *avctx,
                 } else if (s->bit_depth == 16 &&
                            s->color_type == PNG_COLOR_TYPE_RGB) {
                     avctx->pix_fmt = PIX_FMT_RGB48BE;
-                } else if (s->bit_depth == 1) {
-                    avctx->pix_fmt = PIX_FMT_MONOBLACK;
                 } else if (s->color_type == PNG_COLOR_TYPE_PALETTE) {
                     avctx->pix_fmt = PIX_FMT_PAL8;
+                } else if (s->bit_depth == 1) {
+                    avctx->pix_fmt = PIX_FMT_MONOBLACK;
                 } else if (s->bit_depth == 8 &&
                            s->color_type == PNG_COLOR_TYPE_GRAY_ALPHA) {
                     avctx->pix_fmt = PIX_FMT_GRAY8A;
                 } else {
+                    av_log(avctx, AV_LOG_ERROR, "unsupported bit depth %d "
+                                                "and color type %d\n",
+                                                 s->bit_depth, s->color_type);
                     goto fail;
                 }
                 if(p->data[0])
@@ -609,6 +612,23 @@ static int decode_frame(AVCodecContext *avctx,
     }
  exit_loop:
 
+    if(s->bits_per_pixel == 1 && s->color_type == PNG_COLOR_TYPE_PALETTE){
+        int i, j;
+        uint8_t *pd = s->current_picture->data[0];
+        for(j=0; j < s->height; j++) {
+            for(i=s->width/8-1; i>=0; i--) {
+                pd[8*i+7]=  pd[i]    &1;
+                pd[8*i+6]= (pd[i]>>1)&1;
+                pd[8*i+5]= (pd[i]>>2)&1;
+                pd[8*i+4]= (pd[i]>>3)&1;
+                pd[8*i+3]= (pd[i]>>4)&1;
+                pd[8*i+2]= (pd[i]>>5)&1;
+                pd[8*i+1]= (pd[i]>>6)&1;
+                pd[8*i+0]=  pd[i]>>7;
+            }
+            pd += s->image_linesize;
+        }
+    }
     if(s->bits_per_pixel == 2){
         int i, j;
         uint8_t *pd = s->current_picture->data[0];