[FFmpeg-cvslog] r24590 - trunk/libavcore/imgutils.c

[stefano]

Author: stefano
Date: Fri Jul 30 10:42:19 2010
New Revision: 24590

Log:
Reimplement av_fill_image_pointers() using the information stored in
the pixdescs.

The new implementation is more compact, and does not need to be
updated at each pixel format addition.

Modified:
   trunk/libavcore/imgutils.c

Modified: trunk/libavcore/imgutils.c
==============================================================================
--- trunk/libavcore/imgutils.c	Fri Jul 30 10:42:15 2010	(r24589)
+++ trunk/libavcore/imgutils.c	Fri Jul 30 10:42:19 2010	(r24590)
@@ -60,105 +60,38 @@ int av_fill_image_linesizes(int linesize
 }
 
 int av_fill_image_pointers(uint8_t *data[4], enum PixelFormat pix_fmt, int height,
-                           uint8_t *ptr, const int linesize[4])
+                           uint8_t *ptr, const int linesizes[4])
 {
-    int size, h2, size2;
+    int i, total_size, size[4], has_plane[4];
+
     const AVPixFmtDescriptor *desc = &av_pix_fmt_descriptors[pix_fmt];
+    memset(data     , 0, sizeof(data[0])*4);
+    memset(size     , 0, sizeof(size));
+    memset(has_plane, 0, sizeof(has_plane));
 
-    size = linesize[0] * height;
-    switch(pix_fmt) {
-    case PIX_FMT_YUV420P:
-    case PIX_FMT_YUV422P:
-    case PIX_FMT_YUV444P:
-    case PIX_FMT_YUV410P:
-    case PIX_FMT_YUV411P:
-    case PIX_FMT_YUV440P:
-    case PIX_FMT_YUVJ420P:
-    case PIX_FMT_YUVJ422P:
-    case PIX_FMT_YUVJ444P:
-    case PIX_FMT_YUVJ440P:
-    case PIX_FMT_YUV420P16LE:
-    case PIX_FMT_YUV422P16LE:
-    case PIX_FMT_YUV444P16LE:
-    case PIX_FMT_YUV420P16BE:
-    case PIX_FMT_YUV422P16BE:
-    case PIX_FMT_YUV444P16BE:
-        h2 = (height + (1 << desc->log2_chroma_h) - 1) >> desc->log2_chroma_h;
-        size2 = linesize[1] * h2;
-        data[0] = ptr;
-        data[1] = data[0] + size;
-        data[2] = data[1] + size2;
-        data[3] = NULL;
-        return size + 2 * size2;
-    case PIX_FMT_YUVA420P:
-        h2 = (height + (1 << desc->log2_chroma_h) - 1) >> desc->log2_chroma_h;
-        size2 = linesize[1] * h2;
-        data[0] = ptr;
-        data[1] = data[0] + size;
-        data[2] = data[1] + size2;
-        data[3] = data[1] + size2 + size2;
-        return 2 * size + 2 * size2;
-    case PIX_FMT_NV12:
-    case PIX_FMT_NV21:
-        h2 = (height + (1 << desc->log2_chroma_h) - 1) >> desc->log2_chroma_h;
-        size2 = linesize[1] * h2;
-        data[0] = ptr;
-        data[1] = data[0] + size;
-        data[2] = NULL;
-        data[3] = NULL;
-        return size + size2;
-    case PIX_FMT_RGB24:
-    case PIX_FMT_BGR24:
-    case PIX_FMT_ARGB:
-    case PIX_FMT_ABGR:
-    case PIX_FMT_RGBA:
-    case PIX_FMT_BGRA:
-    case PIX_FMT_RGB48BE:
-    case PIX_FMT_RGB48LE:
-    case PIX_FMT_GRAY16BE:
-    case PIX_FMT_GRAY16LE:
-    case PIX_FMT_BGR444BE:
-    case PIX_FMT_BGR444LE:
-    case PIX_FMT_BGR555BE:
-    case PIX_FMT_BGR555LE:
-    case PIX_FMT_BGR565BE:
-    case PIX_FMT_BGR565LE:
-    case PIX_FMT_RGB444BE:
-    case PIX_FMT_RGB444LE:
-    case PIX_FMT_RGB555BE:
-    case PIX_FMT_RGB555LE:
-    case PIX_FMT_RGB565BE:
-    case PIX_FMT_RGB565LE:
-    case PIX_FMT_YUYV422:
-    case PIX_FMT_UYVY422:
-    case PIX_FMT_UYYVYY411:
-    case PIX_FMT_RGB4:
-    case PIX_FMT_BGR4:
-    case PIX_FMT_MONOWHITE:
-    case PIX_FMT_MONOBLACK:
-    case PIX_FMT_Y400A:
-        data[0] = ptr;
-        data[1] = NULL;
-        data[2] = NULL;
-        data[3] = NULL;
-        return size;
-    case PIX_FMT_PAL8:
-    case PIX_FMT_RGB8:
-    case PIX_FMT_BGR8:
-    case PIX_FMT_RGB4_BYTE:
-    case PIX_FMT_BGR4_BYTE:
-    case PIX_FMT_GRAY8:
-        size2 = (size + 3) & ~3;
-        data[0] = ptr;
-        data[1] = ptr + size2; /* palette is stored here as 256 32 bit words */
-        data[2] = NULL;
-        data[3] = NULL;
-        return size2 + 256 * 4;
-    default:
-        data[0] = NULL;
-        data[1] = NULL;
-        data[2] = NULL;
-        data[3] = NULL;
-        return -1;
+    if (desc->flags & PIX_FMT_HWACCEL)
+        return AVERROR(EINVAL);
+
+    data[0] = ptr;
+    size[0] = linesizes[0] * height;
+
+    if (desc->flags & PIX_FMT_PAL) {
+        size[0] = (size[0] + 3) & ~3;
+        data[1] = ptr + size[0]; /* palette is stored here as 256 32 bits words */
+        return size[0] + 256 * 4;
     }
+
+    for (i = 0; i < 4; i++)
+        has_plane[desc->comp[i].plane] = 1;
+
+    total_size = size[0];
+    for (i = 1; has_plane[i] && i < 4; i++) {
+        int h, s = (i == 1 || i == 2) ? desc->log2_chroma_h : 0;
+        data[i] = data[i-1] + size[i-1];
+        h = (height + (1 << s) - 1) >> s;
+        size[i] = h * linesizes[i];
+        total_size += size[i];
+    }
+
+    return total_size;
 }