From 0ea721f7ce81357bc4ec6eea609cd50482c3d15b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Diego=20=27Flameeyes=27=20Petten=C3=B2?=
 <flameeyes@gmail.com>
Date: Sat, 2 Dec 2006 01:19:48 +0000
Subject: Start working on a branch where FFmpeg is not copied, patched and
 carved to be built with automake but instead imported inline and built using
 its own build system. This is an import of a slightly modified FFmpeg current
 tree. xine-lib builds, install and run fine with it, but there are of course
 plenty of things that needs to be fixed before it can even be considered for
 a 1.2.x series. Work will continue in the next days of course.

CVS patchset: 8397
CVS date: 2006/12/02 01:19:48
---
 contrib/ffmpeg/vhook/null.c | 116 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 116 insertions(+)
 create mode 100644 contrib/ffmpeg/vhook/null.c

(limited to 'contrib/ffmpeg/vhook/null.c')

diff --git a/contrib/ffmpeg/vhook/null.c b/contrib/ffmpeg/vhook/null.c
new file mode 100644
index 000000000..041e5abda
--- /dev/null
+++ b/contrib/ffmpeg/vhook/null.c
@@ -0,0 +1,116 @@
+/*
+ * Null Video Hook
+ * Copyright (c) 2002 Philip Gladstone
+ *
+ * This file is part of FFmpeg.
+ *
+ * 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.
+ *
+ * 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 FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+#include <stdio.h>
+
+#include "framehook.h"
+#include "swscale.h"
+
+static int sws_flags = SWS_BICUBIC;
+
+typedef struct {
+    int dummy;
+
+    // This vhook first converts frame to RGB ...
+    struct SwsContext *toRGB_convert_ctx;
+
+    // ... and later converts back frame from RGB to initial format
+    struct SwsContext *fromRGB_convert_ctx;
+
+} ContextInfo;
+
+void Release(void *ctx)
+{
+    ContextInfo *ci;
+    ci = (ContextInfo *) ctx;
+
+    if (ctx) {
+        sws_freeContext(ci->toRGB_convert_ctx);
+        sws_freeContext(ci->fromRGB_convert_ctx);
+        av_free(ctx);
+    }
+}
+
+int Configure(void **ctxp, int argc, char *argv[])
+{
+    fprintf(stderr, "Called with argc=%d\n", argc);
+
+    *ctxp = av_mallocz(sizeof(ContextInfo));
+    return 0;
+}
+
+void Process(void *ctx, AVPicture *picture, enum PixelFormat pix_fmt, int width, int height, int64_t pts)
+{
+    ContextInfo *ci = (ContextInfo *) ctx;
+    char *buf = 0;
+    AVPicture picture1;
+    AVPicture *pict = picture;
+
+    (void) ci;
+
+    if (pix_fmt != PIX_FMT_RGB24) {
+        int size;
+
+        size = avpicture_get_size(PIX_FMT_RGB24, width, height);
+        buf = av_malloc(size);
+
+        avpicture_fill(&picture1, buf, PIX_FMT_RGB24, width, height);
+
+        // if we already got a SWS context, let's realloc if is not re-useable
+        ci->toRGB_convert_ctx = sws_getCachedContext(ci->toRGB_convert_ctx,
+                                    width, height, pix_fmt,
+                                    width, height, PIX_FMT_RGB24,
+                                    sws_flags, NULL, NULL, NULL);
+        if (ci->toRGB_convert_ctx == NULL) {
+            av_log(NULL, AV_LOG_ERROR,
+                   "Cannot initialize the toRGB conversion context\n");
+            exit(1);
+        }
+// img_convert parameters are          2 first destination, then 4 source
+// sws_scale   parameters are context, 4 first source,      then 2 destination
+        sws_scale(ci->toRGB_convert_ctx,
+            picture->data, picture->linesize, 0, height,
+            picture1.data, picture1.linesize);
+
+        pict = &picture1;
+    }
+
+    /* Insert filter code here */
+
+    if (pix_fmt != PIX_FMT_RGB24) {
+        ci->fromRGB_convert_ctx = sws_getCachedContext(ci->fromRGB_convert_ctx,
+                                        width, height, PIX_FMT_RGB24,
+                                        width, height, pix_fmt,
+                                        sws_flags, NULL, NULL, NULL);
+        if (ci->fromRGB_convert_ctx == NULL) {
+            av_log(NULL, AV_LOG_ERROR,
+                   "Cannot initialize the fromRGB conversion context\n");
+            exit(1);
+        }
+// img_convert parameters are          2 first destination, then 4 source
+// sws_scale   parameters are context, 4 first source,      then 2 destination
+        sws_scale(ci->fromRGB_convert_ctx,
+            picture1.data, picture1.linesize, 0, height,
+            picture->data, picture->linesize);
+    }
+
+    av_free(buf);
+}
+
-- 
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