From f7813a5324be39d13ab536c245d15dfc602a7849 Mon Sep 17 00:00:00 2001
From: Tim Redfern <tim@eclectronics.org>
Date: Sun, 29 Dec 2013 12:19:38 +0000
Subject: basic type mechanism working

---
 ffmpeg/libavutil/channel_layout.c | 45 +++++++++++++++++++++++++++++++++++++--
 1 file changed, 43 insertions(+), 2 deletions(-)

(limited to 'ffmpeg/libavutil/channel_layout.c')

diff --git a/ffmpeg/libavutil/channel_layout.c b/ffmpeg/libavutil/channel_layout.c
index e582760..4c0677f 100644
--- a/ffmpeg/libavutil/channel_layout.c
+++ b/ffmpeg/libavutil/channel_layout.c
@@ -23,6 +23,8 @@
  * audio channel layout utility functions
  */
 
+#include <stdint.h>
+
 #include "avstring.h"
 #include "avutil.h"
 #include "channel_layout.h"
@@ -103,7 +105,11 @@ static const struct {
     { "downmix",     2,  AV_CH_LAYOUT_STEREO_DOWNMIX, },
 };
 
+#if FF_API_GET_CHANNEL_LAYOUT_COMPAT
+static uint64_t get_channel_layout_single(const char *name, int name_len, int compat)
+#else
 static uint64_t get_channel_layout_single(const char *name, int name_len)
+#endif
 {
     int i;
     char *end;
@@ -120,16 +126,40 @@ static uint64_t get_channel_layout_single(const char *name, int name_len)
             !memcmp(channel_names[i].name, name, name_len))
             return (int64_t)1 << i;
     i = strtol(name, &end, 10);
-    if (end - name == name_len ||
-        (end + 1 - name == name_len && *end  == 'c'))
+
+#if FF_API_GET_CHANNEL_LAYOUT_COMPAT
+    if (compat) {
+        if (end - name == name_len ||
+            (end + 1 - name == name_len && *end  == 'c')) {
+            layout = av_get_default_channel_layout(i);
+            if (end - name == name_len) {
+                av_log(NULL, AV_LOG_WARNING,
+                       "Single channel layout '%.*s' is interpreted as a number of channels, "
+                       "switch to the syntax '%.*sc' otherwise it will be interpreted as a "
+                       "channel layout number in a later version\n",
+                       name_len, name, name_len, name);
+                return layout;
+            }
+        }
+    } else {
+#endif
+    if ((end + 1 - name == name_len && *end  == 'c'))
         return av_get_default_channel_layout(i);
+#if FF_API_GET_CHANNEL_LAYOUT_COMPAT
+    }
+#endif
+
     layout = strtoll(name, &end, 0);
     if (end - name == name_len)
         return FFMAX(layout, 0);
     return 0;
 }
 
+#if FF_API_GET_CHANNEL_LAYOUT_COMPAT
+uint64_t ff_get_channel_layout(const char *name, int compat)
+#else
 uint64_t av_get_channel_layout(const char *name)
+#endif
 {
     const char *n, *e;
     const char *name_end = name + strlen(name);
@@ -137,7 +167,11 @@ uint64_t av_get_channel_layout(const char *name)
 
     for (n = name; n < name_end; n = e + 1) {
         for (e = n; e < name_end && *e != '+' && *e != '|'; e++);
+#if FF_API_GET_CHANNEL_LAYOUT_COMPAT
+        layout_single = get_channel_layout_single(n, e - n, compat);
+#else
         layout_single = get_channel_layout_single(n, e - n);
+#endif
         if (!layout_single)
             return 0;
         layout |= layout_single;
@@ -145,6 +179,13 @@ uint64_t av_get_channel_layout(const char *name)
     return layout;
 }
 
+#if FF_API_GET_CHANNEL_LAYOUT_COMPAT
+uint64_t av_get_channel_layout(const char *name)
+{
+    return ff_get_channel_layout(name, 1);
+}
+#endif
+
 void av_bprint_channel_layout(struct AVBPrint *bp,
                               int nb_channels, uint64_t channel_layout)
 {
-- 
cgit v1.2.3