avcodec: split avpicture from imgconvert

All the non deprecated functions are in avpicture.c now.

1 files changed, 123 insertions, 0 deletions

diff --git a/libavcodec/avpicture.c b/libavcodec/avpicture.c
new file mode 100644
index 0000000000..ec4e748ac8
--- /dev/null
+++ b/libavcodec/avpicture.c
@@ -0,0 +1,123 @@
+/*
+ * AVPicture management routines
+ * Copyright (c) 2001, 2002, 2003 Fabrice Bellard
+ *
+ * This file is part of Libav.
+ *
+ * Libav 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,
+ * 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
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * AVPicture management routines
+ */
+
+#include "avcodec.h"
+#include "internal.h"
+#include "libavutil/common.h"
+#include "libavutil/pixdesc.h"
+#include "libavutil/imgutils.h"
+#include "libavutil/colorspace.h"
+
+int avpicture_fill(AVPicture *picture, uint8_t *ptr,
+                   enum AVPixelFormat pix_fmt, int width, int height)
+{
+    int ret;
+
+    if ((ret = av_image_check_size(width, height, 0, NULL)) < 0)
+        return ret;
+
+    if ((ret = av_image_fill_linesizes(picture->linesize, pix_fmt, width)) < 0)
+        return ret;
+
+    return av_image_fill_pointers(picture->data, pix_fmt,
+                                  height, ptr, picture->linesize);
+}
+
+int avpicture_layout(const AVPicture* src, enum AVPixelFormat pix_fmt,
+                     int width, int height,
+                     unsigned char *dest, int dest_size)
+{
+    int i, j, nb_planes = 0, linesizes[4];
+    const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
+    int size = avpicture_get_size(pix_fmt, width, height);
+
+    if (size > dest_size || size < 0)
+        return AVERROR(EINVAL);
+
+    for (i = 0; i < desc->nb_components; i++)
+        nb_planes = FFMAX(desc->comp[i].plane, nb_planes);
+
+    nb_planes++;
+
+    av_image_fill_linesizes(linesizes, pix_fmt, width);
+    for (i = 0; i < nb_planes; i++) {
+        int h, shift = (i == 1 || i == 2) ? desc->log2_chroma_h : 0;
+        const unsigned char *s = src->data[i];
+        h = (height + (1 << shift) - 1) >> shift;
+
+        for (j = 0; j < h; j++) {
+            memcpy(dest, s, linesizes[i]);
+            dest += linesizes[i];
+            s += src->linesize[i];
+        }
+    }
+
+    if (desc->flags & PIX_FMT_PAL)
+        memcpy((unsigned char *)(((size_t)dest + 3) & ~3),
+               src->data[1], 256 * 4);
+
+    return size;
+}
+
+int avpicture_get_size(enum AVPixelFormat pix_fmt, int width, int height)
+{
+    const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
+    AVPicture dummy_pict;
+    int ret;
+
+    if ((ret = av_image_check_size(width, height, 0, NULL)) < 0)
+        return ret;
+    if (desc->flags & PIX_FMT_PSEUDOPAL)
+        // do not include palette for these pseudo-paletted formats
+        return width * height;
+    return avpicture_fill(&dummy_pict, NULL, pix_fmt, width, height);
+}
+
+int avpicture_alloc(AVPicture *picture,
+                    enum AVPixelFormat pix_fmt, int width, int height)
+{
+    int ret = av_image_alloc(picture->data, picture->linesize,
+                             width, height, pix_fmt, 1);
+    if (ret < 0) {
+        memset(picture, 0, sizeof(AVPicture));
+        return ret;
+    }
+
+    return 0;
+}
+
+void avpicture_free(AVPicture *picture)
+{
+    av_free(picture->data[0]);
+}
+
+void av_picture_copy(AVPicture *dst, const AVPicture *src,
+                     enum AVPixelFormat pix_fmt, int width, int height)
+{
+    av_image_copy(dst->data, dst->linesize, src->data,
+                  src->linesize, pix_fmt, width, height);
+}
+