fate: add a channel_layout API test

Signed-off-by: James Almer <jamrial@gmail.com>

4 files changed, 380 insertions, 0 deletions

diff --git a/libavutil/Makefile b/libavutil/Makefile
index 737eb98bd4..81df3b0640 100644
--- a/libavutil/Makefile
+++ b/libavutil/Makefile
@@ -221,6 +221,7 @@ TESTPROGS = adler32                                                     \
             bprint                                                      \
             cast5                                                       \
             camellia                                                    \
+            channel_layout                                              \
             color_utils                                                 \
             cpu                                                         \
             crc                                                         \
diff --git a/libavutil/tests/channel_layout.c b/libavutil/tests/channel_layout.c
new file mode 100644
index 0000000000..83d549a42c
--- /dev/null
+++ b/libavutil/tests/channel_layout.c
@@ -0,0 +1,266 @@
+/*
+ * Copyright (c) 2021 James Almer
+ *
+ * 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 "libavutil/channel_layout.c"
+
+#define CHANNEL_NAME(x)                                                    \
+    av_bprint_clear(&bp);                                                  \
+    av_channel_name_bprint(&bp, x);
+
+#define CHANNEL_DESCRIPTION(x)                                             \
+    av_bprint_clear(&bp);                                                  \
+    av_channel_description_bprint(&bp, x);
+
+#define CHANNEL_LAYOUT_FROM_MASK(x)                                        \
+    av_channel_layout_uninit(&layout);                                     \
+    av_bprint_clear(&bp);                                                  \
+    if (!av_channel_layout_from_mask(&layout, x))                          \
+        av_channel_layout_describe_bprint(&layout, &bp);                   \
+    else                                                                   \
+        av_bprintf(&bp, "fail");
+
+#define CHANNEL_LAYOUT_FROM_STRING(x)                                      \
+    av_channel_layout_uninit(&layout);                                     \
+    av_bprint_clear(&bp);                                                  \
+    if (!av_channel_layout_from_string(&layout, x))                        \
+        av_channel_layout_describe_bprint(&layout, &bp);                   \
+    else                                                                   \
+        av_bprintf(&bp, "fail");
+
+#define CHANNEL_LAYOUT_CHANNEL_FROM_INDEX(x)                               \
+    ret = av_channel_layout_channel_from_index(&layout, x);                \
+    if (ret < 0)                                                           \
+        ret = -1
+
+#define CHANNEL_LAYOUT_INDEX_FROM_CHANNEL(x)                               \
+    ret = av_channel_layout_index_from_channel(&layout, x);                \
+    if (ret < 0)                                                           \
+        ret = -1
+
+#define CHANNEL_LAYOUT_CHANNEL_FROM_STRING(x)                              \
+    ret = av_channel_layout_channel_from_string(&layout, x);               \
+    if (ret < 0)                                                           \
+        ret = -1
+
+#define CHANNEL_LAYOUT_INDEX_FROM_STRING(x)                                \
+    ret = av_channel_layout_index_from_string(&layout, x);                 \
+    if (ret < 0)                                                           \
+        ret = -1
+
+int main(void)
+{
+    AVChannelLayout layout = { 0 };
+    AVBPrint bp;
+    int ret;
+
+    av_bprint_init(&bp, 64, AV_BPRINT_SIZE_AUTOMATIC);
+
+    printf("Testing av_channel_name\n");
+    CHANNEL_NAME(AV_CHAN_FRONT_LEFT);
+    printf("With AV_CHAN_FRONT_LEFT: %27s\n", bp.str);
+    CHANNEL_NAME(AV_CHAN_FRONT_RIGHT);
+    printf("With AV_CHAN_FRONT_RIGHT: %26s\n", bp.str);
+    CHANNEL_NAME(63);
+    printf("With 63: %43s\n", bp.str);
+
+    printf("Testing av_channel_description\n");
+    CHANNEL_DESCRIPTION(AV_CHAN_FRONT_LEFT);
+    printf("With AV_CHAN_FRONT_LEFT: %27s\n", bp.str);
+    CHANNEL_DESCRIPTION(AV_CHAN_FRONT_RIGHT);
+    printf("With AV_CHAN_FRONT_RIGHT: %26s\n", bp.str);
+    CHANNEL_DESCRIPTION(63);
+    printf("With 63: %43s\n", bp.str);
+
+    printf("\nTesting av_channel_from_string\n");
+    printf("With \"FL\": %41d\n", av_channel_from_string("FL"));
+    printf("With \"FR\": %41d\n", av_channel_from_string("FR"));
+    printf("With \"USR63\": %38d\n", av_channel_from_string("USR63"));
+
+    printf("\n==Native layouts==\n");
+
+    printf("\nTesting av_channel_layout_from_string\n");
+    CHANNEL_LAYOUT_FROM_STRING("0x3f");
+    printf("With \"0x3f\": %39s\n", bp.str);
+    CHANNEL_LAYOUT_FROM_STRING("63");
+    printf("With \"63\": %41s\n", bp.str);
+    CHANNEL_LAYOUT_FROM_STRING("6c");
+    printf("With \"6c\": %41s\n", bp.str);
+    CHANNEL_LAYOUT_FROM_STRING("6C");
+    printf("With \"6C\": %41s\n", bp.str);
+    CHANNEL_LAYOUT_FROM_STRING("6 channels");
+    printf("With \"6 channels\": %33s\n", bp.str);
+    CHANNEL_LAYOUT_FROM_STRING("6 channels (FL+FR+FC+LFE+BL+BR)");
+    printf("With \"6 channels (FL+FR+FC+LFE+BL+BR)\": %12s\n", bp.str);
+    CHANNEL_LAYOUT_FROM_STRING("FL+FR+FC+LFE+BL+BR");
+    printf("With \"FL+FR+FC+LFE+BL+BR\": %25s\n", bp.str);
+    CHANNEL_LAYOUT_FROM_STRING("5.1");
+    printf("With \"5.1\": %40s\n", bp.str);
+    CHANNEL_LAYOUT_FROM_STRING("FL+FR+USR63");
+    printf("With \"FL+FR+USR63\": %32s\n", bp.str);
+    CHANNEL_LAYOUT_FROM_STRING("FL+FR+FC+LFE+SL+SR");
+    printf("With \"FL+FR+FC+LFE+SL+SR\": %25s\n", bp.str);
+    CHANNEL_LAYOUT_FROM_STRING("5.1(side)");
+    printf("With \"5.1(side)\": %34s\n", bp.str);
+
+    printf("\nTesting av_channel_layout_from_mask\n");
+    CHANNEL_LAYOUT_FROM_MASK(AV_CH_LAYOUT_5POINT1);
+    printf("With AV_CH_LAYOUT_5POINT1: %25s\n", bp.str);
+
+    printf("\nTesting av_channel_layout_channel_from_index\n");
+    CHANNEL_LAYOUT_CHANNEL_FROM_INDEX(0);
+    printf("On 5.1(side) layout with 0: %24d\n", ret);
+    CHANNEL_LAYOUT_CHANNEL_FROM_INDEX(1);
+    printf("On 5.1(side) layout with 1: %24d\n", ret);
+    CHANNEL_LAYOUT_CHANNEL_FROM_INDEX(2);
+    printf("On 5.1(side) layout with 2: %24d\n", ret);
+    CHANNEL_LAYOUT_CHANNEL_FROM_INDEX(3);
+    printf("On 5.1(side) layout with 3: %24d\n", ret);
+    CHANNEL_LAYOUT_CHANNEL_FROM_INDEX(4);
+    printf("On 5.1(side) layout with 4: %24d\n", ret);
+    CHANNEL_LAYOUT_CHANNEL_FROM_INDEX(5);
+    printf("On 5.1(side) layout with 5: %24d\n", ret);
+    CHANNEL_LAYOUT_CHANNEL_FROM_INDEX(6);
+    printf("On 5.1(side) layout with 6: %24d\n", ret);
+
+    printf("\nTesting av_channel_layout_index_from_channel\n");
+    CHANNEL_LAYOUT_INDEX_FROM_CHANNEL(AV_CHAN_FRONT_LEFT);
+    printf("On 5.1(side) layout with AV_CHAN_FRONT_LEFT: %7d\n", ret);
+    CHANNEL_LAYOUT_INDEX_FROM_CHANNEL(AV_CHAN_FRONT_RIGHT);
+    printf("On 5.1(side) layout with AV_CHAN_FRONT_RIGHT: %6d\n", ret);
+    CHANNEL_LAYOUT_INDEX_FROM_CHANNEL(AV_CHAN_FRONT_CENTER);
+    printf("On 5.1(side) layout with AV_CHAN_FRONT_CENTER: %5d\n", ret);
+    CHANNEL_LAYOUT_INDEX_FROM_CHANNEL(AV_CHAN_LOW_FREQUENCY);
+    printf("On 5.1(side) layout with AV_CHAN_LOW_FREQUENCY: %4d\n", ret);
+    CHANNEL_LAYOUT_INDEX_FROM_CHANNEL(AV_CHAN_SIDE_LEFT);
+    printf("On 5.1(side) layout with AV_CHAN_SIDE_LEFT: %8d\n", ret);
+    CHANNEL_LAYOUT_INDEX_FROM_CHANNEL(AV_CHAN_SIDE_RIGHT);
+    printf("On 5.1(side) layout with AV_CHAN_SIDE_RIGHT: %7d\n", ret);
+    CHANNEL_LAYOUT_INDEX_FROM_CHANNEL(AV_CHAN_BACK_CENTER);
+    printf("On 5.1(side) layout with AV_CHAN_BACK_CENTER: %6d\n", ret);
+
+    printf("\nTesting av_channel_layout_channel_from_string\n");
+    CHANNEL_LAYOUT_CHANNEL_FROM_STRING("FL");
+    printf("On 5.1(side) layout with \"FL\": %21d\n", ret);
+    CHANNEL_LAYOUT_CHANNEL_FROM_STRING("FR");
+    printf("On 5.1(side) layout with \"FR\": %21d\n", ret);
+    CHANNEL_LAYOUT_CHANNEL_FROM_STRING("FC");
+    printf("On 5.1(side) layout with \"FC\": %21d\n", ret);
+    CHANNEL_LAYOUT_CHANNEL_FROM_STRING("LFE");
+    printf("On 5.1(side) layout with \"LFE\": %20d\n", ret);
+    CHANNEL_LAYOUT_CHANNEL_FROM_STRING("SL");
+    printf("On 5.1(side) layout with \"SL\": %21d\n", ret);
+    CHANNEL_LAYOUT_CHANNEL_FROM_STRING("SR");
+    printf("On 5.1(side) layout with \"SR\": %21d\n", ret);
+    CHANNEL_LAYOUT_CHANNEL_FROM_STRING("BC");
+    printf("On 5.1(side) layout with \"BC\": %21d\n", ret);
+
+    printf("\nTesting av_channel_layout_index_from_string\n");
+    CHANNEL_LAYOUT_INDEX_FROM_STRING("FL");
+    printf("On 5.1(side) layout with \"FL\": %21d\n", ret);
+    CHANNEL_LAYOUT_INDEX_FROM_STRING("FR");
+    printf("On 5.1(side) layout with \"FR\": %21d\n", ret);
+    CHANNEL_LAYOUT_INDEX_FROM_STRING("FC");
+    printf("On 5.1(side) layout with \"FC\": %21d\n", ret);
+    CHANNEL_LAYOUT_INDEX_FROM_STRING("LFE");
+    printf("On 5.1(side) layout with \"LFE\": %20d\n", ret);
+    CHANNEL_LAYOUT_INDEX_FROM_STRING("SL");
+    printf("On 5.1(side) layout with \"SL\": %21d\n", ret);
+    CHANNEL_LAYOUT_INDEX_FROM_STRING("SR");
+    printf("On 5.1(side) layout with \"SR\": %21d\n", ret);
+    CHANNEL_LAYOUT_INDEX_FROM_STRING("BC");
+    printf("On 5.1(side) layout with \"BC\": %21d\n", ret);
+
+    printf("\n==Custom layouts==\n");
+
+    printf("\nTesting av_channel_layout_from_string\n");
+    CHANNEL_LAYOUT_FROM_STRING("FL+FR+FC+BL+BR+LFE");
+    printf("With \"FL+FR+FC+BL+BR+LFE\": %34s\n", bp.str);
+    CHANNEL_LAYOUT_FROM_STRING("2 channels (FR+FL)");
+    printf("With \"2 channels (FR+FL)\": %34s\n", bp.str);
+    CHANNEL_LAYOUT_FROM_STRING("FL@Foo+FR@Bar");
+    printf("With \"FL@Foo+FR@Bar\": %39s\n", bp.str);
+    CHANNEL_LAYOUT_FROM_STRING("FR+FL@Foo+USR63@Foo");
+    printf("With \"FR+FL@Foo+USR63@Foo\": %33s\n", bp.str);
+
+    printf("\nTesting av_channel_layout_index_from_string\n");
+    CHANNEL_LAYOUT_INDEX_FROM_STRING("FR");
+    printf("On \"FR+FL@Foo+USR63@Foo\" layout with \"FR\": %18d\n", ret);
+    CHANNEL_LAYOUT_INDEX_FROM_STRING("FL");
+    printf("On \"FR+FL@Foo+USR63@Foo\" layout with \"FL\": %18d\n", ret);
+    CHANNEL_LAYOUT_INDEX_FROM_STRING("USR63");
+    printf("On \"FR+FL@Foo+USR63@Foo\" layout with \"USR63\": %15d\n", ret);
+    CHANNEL_LAYOUT_INDEX_FROM_STRING("Foo");
+    printf("On \"FR+FL@Foo+USR63@Foo\" layout with \"Foo\": %17d\n", ret);
+    CHANNEL_LAYOUT_INDEX_FROM_STRING("@Foo");
+    printf("On \"FR+FL@Foo+USR63@Foo\" layout with \"@Foo\": %16d\n", ret);
+    CHANNEL_LAYOUT_INDEX_FROM_STRING("FR@Foo");
+    printf("On \"FR+FL@Foo+USR63@Foo\" layout with \"FR@Foo\": %14d\n", ret);
+    CHANNEL_LAYOUT_INDEX_FROM_STRING("FL@Foo");
+    printf("On \"FR+FL@Foo+USR63@Foo\" layout with \"FL@Foo\": %14d\n", ret);
+    CHANNEL_LAYOUT_INDEX_FROM_STRING("USR63@Foo");
+    printf("On \"FR+FL@Foo+USR63@Foo\" layout with \"USR63@Foo\": %11d\n", ret);
+    CHANNEL_LAYOUT_INDEX_FROM_STRING("BC");
+    printf("On \"FR+FL@Foo+USR63@Foo\" layout with \"BC\": %18d\n", ret);
+
+    printf("\nTesting av_channel_layout_channel_from_string\n");
+    CHANNEL_LAYOUT_CHANNEL_FROM_STRING("FR");
+    printf("On \"FR+FL@Foo+USR63@Foo\" layout with \"FR\": %18d\n", ret);
+    CHANNEL_LAYOUT_CHANNEL_FROM_STRING("FL");
+    printf("On \"FR+FL@Foo+USR63@Foo\" layout with \"FL\": %18d\n", ret);
+    CHANNEL_LAYOUT_CHANNEL_FROM_STRING("USR63");
+    printf("On \"FR+FL@Foo+USR63@Foo\" layout with \"USR63\": %15d\n", ret);
+    CHANNEL_LAYOUT_CHANNEL_FROM_STRING("Foo");
+    printf("On \"FR+FL@Foo+USR63@Foo\" layout with \"Foo\": %17d\n", ret);
+    CHANNEL_LAYOUT_CHANNEL_FROM_STRING("@Foo");
+    printf("On \"FR+FL@Foo+USR63@Foo\" layout with \"@Foo\": %16d\n", ret);
+    CHANNEL_LAYOUT_CHANNEL_FROM_STRING("FR@Foo");
+    printf("On \"FR+FL@Foo+USR63@Foo\" layout with \"FR@Foo\": %14d\n", ret);
+    CHANNEL_LAYOUT_CHANNEL_FROM_STRING("FL@Foo");
+    printf("On \"FR+FL@Foo+USR63@Foo\" layout with \"FL@Foo\": %14d\n", ret);
+    CHANNEL_LAYOUT_CHANNEL_FROM_STRING("USR63@Foo");
+    printf("On \"FR+FL@Foo+USR63@Foo\" layout with \"USR63@Foo\": %11d\n", ret);
+    CHANNEL_LAYOUT_CHANNEL_FROM_STRING("BC");
+    printf("On \"FR+FL@Foo+USR63@Foo\" layout with \"BC\": %18d\n", ret);
+
+    printf("\nTesting av_channel_layout_index_from_channel\n");
+    CHANNEL_LAYOUT_INDEX_FROM_CHANNEL(AV_CHAN_FRONT_RIGHT);
+    printf("On \"FR+FL@Foo+USR63@Foo\" layout with AV_CHAN_FRONT_RIGHT: %3d\n", ret);
+    CHANNEL_LAYOUT_INDEX_FROM_CHANNEL(AV_CHAN_FRONT_LEFT);
+    printf("On \"FR+FL@Foo+USR63@Foo\" layout with AV_CHAN_FRONT_LEFT: %4d\n", ret);
+    CHANNEL_LAYOUT_INDEX_FROM_CHANNEL(63);
+    printf("On \"FR+FL@Foo+USR63@Foo\" layout with 63: %20d\n", ret);
+    CHANNEL_LAYOUT_INDEX_FROM_CHANNEL(AV_CHAN_BACK_CENTER);
+    printf("On \"FR+FL@Foo+USR63@Foo\" layout with AV_CHAN_BACK_CENTER: %3d\n", ret);
+
+    printf("\nTesting av_channel_layout_channel_from_index\n");
+    CHANNEL_LAYOUT_CHANNEL_FROM_INDEX(0);
+    printf("On \"FR+FL@Foo+USR63@Foo\" layout with 0: %21d\n", ret);
+    CHANNEL_LAYOUT_CHANNEL_FROM_INDEX(1);
+    printf("On \"FR+FL@Foo+USR63@Foo\" layout with 1: %21d\n", ret);
+    CHANNEL_LAYOUT_CHANNEL_FROM_INDEX(2);
+    printf("On \"FR+FL@Foo+USR63@Foo\" layout with 2: %21d\n", ret);
+    CHANNEL_LAYOUT_CHANNEL_FROM_INDEX(3);
+    printf("On \"FR+FL@Foo+USR63@Foo\" layout with 3: %21d\n", ret);
+
+    av_channel_layout_uninit(&layout);
+    av_bprint_finalize(&bp, NULL);
+
+    return 0;
+}
diff --git a/tests/fate/libavutil.mak b/tests/fate/libavutil.mak
index 1ec9ed00ad..c32cf2e706 100644
--- a/tests/fate/libavutil.mak
+++ b/tests/fate/libavutil.mak
@@ -23,6 +23,10 @@ fate-cast5: libavutil/tests/cast5$(EXESUF)
 fate-cast5: CMD = run libavutil/tests/cast5$(EXESUF)
 fate-cast5: CMP = null
 
+FATE_LIBAVUTIL += fate-channel_layout
+fate-channel_layout: libavutil/tests/channel_layout$(EXESUF)
+fate-channel_layout: CMD = run libavutil/tests/channel_layout$(EXESUF)
+
 FATE_LIBAVUTIL += fate-audio_fifo
 fate-audio_fifo: libavutil/tests/audio_fifo$(EXESUF)
 fate-audio_fifo: CMD = run libavutil/tests/audio_fifo$(EXESUF)
diff --git a/tests/ref/fate/channel_layout b/tests/ref/fate/channel_layout
new file mode 100644
index 0000000000..4b89e3f0e0
--- /dev/null
+++ b/tests/ref/fate/channel_layout
@@ -0,0 +1,109 @@
+Testing av_channel_name
+With AV_CHAN_FRONT_LEFT:                          FL
+With AV_CHAN_FRONT_RIGHT:                         FR
+With 63:                                       USR63
+Testing av_channel_description
+With AV_CHAN_FRONT_LEFT:                  front left
+With AV_CHAN_FRONT_RIGHT:                front right
+With 63:                                     user 63
+
+Testing av_channel_from_string
+With "FL":                                         0
+With "FR":                                         1
+With "USR63":                                     63
+
+==Native layouts==
+
+Testing av_channel_layout_from_string
+With "0x3f":                                     5.1
+With "63":                                       5.1
+With "6c":                                       5.1
+With "6C":                                6 channels
+With "6 channels":                        6 channels
+With "6 channels (FL+FR+FC+LFE+BL+BR)":          5.1
+With "FL+FR+FC+LFE+BL+BR":                       5.1
+With "5.1":                                      5.1
+With "FL+FR+USR63":         3 channels (FL+FR+USR63)
+With "FL+FR+FC+LFE+SL+SR":                 5.1(side)
+With "5.1(side)":                          5.1(side)
+
+Testing av_channel_layout_from_mask
+With AV_CH_LAYOUT_5POINT1:                 5.1(side)
+
+Testing av_channel_layout_channel_from_index
+On 5.1(side) layout with 0:                        0
+On 5.1(side) layout with 1:                        1
+On 5.1(side) layout with 2:                        2
+On 5.1(side) layout with 3:                        3
+On 5.1(side) layout with 4:                        9
+On 5.1(side) layout with 5:                       10
+On 5.1(side) layout with 6:                       -1
+
+Testing av_channel_layout_index_from_channel
+On 5.1(side) layout with AV_CHAN_FRONT_LEFT:       0
+On 5.1(side) layout with AV_CHAN_FRONT_RIGHT:      1
+On 5.1(side) layout with AV_CHAN_FRONT_CENTER:     2
+On 5.1(side) layout with AV_CHAN_LOW_FREQUENCY:    3
+On 5.1(side) layout with AV_CHAN_SIDE_LEFT:        4
+On 5.1(side) layout with AV_CHAN_SIDE_RIGHT:       5
+On 5.1(side) layout with AV_CHAN_BACK_CENTER:     -1
+
+Testing av_channel_layout_channel_from_string
+On 5.1(side) layout with "FL":                     0
+On 5.1(side) layout with "FR":                     1
+On 5.1(side) layout with "FC":                     2
+On 5.1(side) layout with "LFE":                    3
+On 5.1(side) layout with "SL":                     9
+On 5.1(side) layout with "SR":                    10
+On 5.1(side) layout with "BC":                    -1
+
+Testing av_channel_layout_index_from_string
+On 5.1(side) layout with "FL":                     0
+On 5.1(side) layout with "FR":                     1
+On 5.1(side) layout with "FC":                     2
+On 5.1(side) layout with "LFE":                    3
+On 5.1(side) layout with "SL":                     4
+On 5.1(side) layout with "SR":                     5
+On 5.1(side) layout with "BC":                    -1
+
+==Custom layouts==
+
+Testing av_channel_layout_from_string
+With "FL+FR+FC+BL+BR+LFE":    6 channels (FL+FR+FC+BL+BR+LFE)
+With "2 channels (FR+FL)":                 2 channels (FR+FL)
+With "FL@Foo+FR@Bar":              2 channels (FL@Foo+FR@Bar)
+With "FR+FL@Foo+USR63@Foo":  3 channels (FR+FL@Foo+USR63@Foo)
+
+Testing av_channel_layout_index_from_string
+On "FR+FL@Foo+USR63@Foo" layout with "FR":                  0
+On "FR+FL@Foo+USR63@Foo" layout with "FL":                  1
+On "FR+FL@Foo+USR63@Foo" layout with "USR63":               2
+On "FR+FL@Foo+USR63@Foo" layout with "Foo":                -1
+On "FR+FL@Foo+USR63@Foo" layout with "@Foo":                1
+On "FR+FL@Foo+USR63@Foo" layout with "FR@Foo":             -1
+On "FR+FL@Foo+USR63@Foo" layout with "FL@Foo":              1
+On "FR+FL@Foo+USR63@Foo" layout with "USR63@Foo":           2
+On "FR+FL@Foo+USR63@Foo" layout with "BC":                 -1
+
+Testing av_channel_layout_channel_from_string
+On "FR+FL@Foo+USR63@Foo" layout with "FR":                  1
+On "FR+FL@Foo+USR63@Foo" layout with "FL":                  0
+On "FR+FL@Foo+USR63@Foo" layout with "USR63":              63
+On "FR+FL@Foo+USR63@Foo" layout with "Foo":                -1
+On "FR+FL@Foo+USR63@Foo" layout with "@Foo":                0
+On "FR+FL@Foo+USR63@Foo" layout with "FR@Foo":             -1
+On "FR+FL@Foo+USR63@Foo" layout with "FL@Foo":              0
+On "FR+FL@Foo+USR63@Foo" layout with "USR63@Foo":          63
+On "FR+FL@Foo+USR63@Foo" layout with "BC":                 -1
+
+Testing av_channel_layout_index_from_channel
+On "FR+FL@Foo+USR63@Foo" layout with AV_CHAN_FRONT_RIGHT:   0
+On "FR+FL@Foo+USR63@Foo" layout with AV_CHAN_FRONT_LEFT:    1
+On "FR+FL@Foo+USR63@Foo" layout with 63:                    2
+On "FR+FL@Foo+USR63@Foo" layout with AV_CHAN_BACK_CENTER:  -1
+
+Testing av_channel_layout_channel_from_index
+On "FR+FL@Foo+USR63@Foo" layout with 0:                     1
+On "FR+FL@Foo+USR63@Foo" layout with 1:                     0
+On "FR+FL@Foo+USR63@Foo" layout with 2:                    63
+On "FR+FL@Foo+USR63@Foo" layout with 3:                    -1