Reimplement av_picture_data_copy() avoiding the use of PixFmtInfo

information.

Required for moving the function to libavcore.

Originally committed as revision 25066 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/imgconvert.c

@@ -799,17 +799,26 @@ void av_picture_data_copy(uint8_t *dst_data[4], int dst_linesize[4],
                           uint8_t *src_data[4], int src_linesize[4],
                           enum PixelFormat pix_fmt, int width, int height)
 {
-    int i;
-    const PixFmtInfo *pf = &pix_fmt_info[pix_fmt];
     const AVPixFmtDescriptor *desc = &av_pix_fmt_descriptors[pix_fmt];
 
-    switch(pf->pixel_type) {
-    case FF_PIXEL_PACKED:
-    case FF_PIXEL_PLANAR:
-        for(i = 0; i < pf->nb_channels; i++) {
-            int h;
+    if (desc->flags & PIX_FMT_HWACCEL)
+        return;
+
+    if (desc->flags & PIX_FMT_PAL) {
+        av_image_copy_plane(dst_data[0], dst_linesize[0],
+                            src_data[0], src_linesize[0],
+                            width, height);
+        /* copy the palette */
+        memcpy(dst_data[1], src_data[1], 4*256);
+    } else {
+        int i, planes_nb = 0;
+
+        for (i = 0; i < desc->nb_components; i++)
+            planes_nb = FFMAX(planes_nb, desc->comp[i].plane + 1);
+
+        for (i = 0; i < planes_nb; i++) {
+            int h = height;
             int bwidth = av_image_get_linesize(pix_fmt, width, i);
-            h = height;
             if (i == 1 || i == 2) {
                 h= -((-height)>>desc->log2_chroma_h);
             }
@@ -817,14 +826,6 @@ void av_picture_data_copy(uint8_t *dst_data[4], int dst_linesize[4],
                                 src_data[i], src_linesize[i],
                                 bwidth, h);
         }
-        break;
-    case FF_PIXEL_PALETTE:
-        av_image_copy_plane(dst_data[0], dst_linesize[0],
-                            src_data[0], src_linesize[0],
-                            width, height);
-        /* copy the palette */
-        memcpy(dst_data[1], src_data[1], 4*256);
-        break;
     }
 }