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/*
* 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 <inttypes.h>
#include <stdio.h>
#include <string.h>
#include "libavutil/bprint.h"
#include "libavutil/channel_layout.h"
#include "libavutil/internal.h"
#include "libavutil/mem.h"
#define BPRINT_ARGS1(bp, ...) (bp), __VA_ARGS__
#define BPRINT_ARGS0(bp, ...) __VA_ARGS__, (bp)
#define ORD_ARGS1(str, size, ...) (str), (size), __VA_ARGS__
#define ORD_ARGS0(str, size, ...) __VA_ARGS__, (str), (size)
// This macro presumes the AVBPrint to have been cleared before usage.
#define CMP_BPRINT_AND_NONBPRINT(bp, func_name, ARG_ORDER, ...) do { \
char *str; \
int size; \
func_name ## _bprint(BPRINT_ARGS ## ARG_ORDER((bp), __VA_ARGS__)); \
if (strlen((bp)->str) != (bp)->len) { \
printf("strlen of AVBPrint-string returned by "#func_name"_bprint" \
" differs from AVBPrint.len: %"SIZE_SPECIFIER" vs. %u\n", \
strlen((bp)->str), (bp)->len); \
break; \
} \
size = func_name(ORD_ARGS ## ARG_ORDER(NULL, 0, __VA_ARGS__)); \
if (size <= 0) { \
printf(#func_name " returned %d\n", size); \
break; \
} \
if ((bp)->len != size - 1) { \
printf("Return value %d of " #func_name " inconsistent with length"\
" %u obtained from corresponding bprint version\n", \
size, (bp)->len); \
break; \
} \
str = av_malloc(size); \
if (!str) { \
printf("string of size %d could not be allocated.\n", size); \
break; \
} \
size = func_name(ORD_ARGS ## ARG_ORDER(str, size, __VA_ARGS__)); \
if (size <= 0 || (bp)->len != size - 1) { \
printf("Return value %d of " #func_name " inconsistent with length"\
" %d obtained in first pass.\n", size, (bp)->len); \
av_free(str); \
break; \
} \
if (strcmp(str, (bp)->str)) { \
printf("Ordinary and _bprint versions of "#func_name" disagree: " \
"'%s' vs. '%s'\n", str, (bp)->str); \
av_free(str); \
break; \
} \
av_free(str); \
} while (0)
static void channel_name(AVBPrint *bp, enum AVChannel channel)
{
av_bprint_clear(bp);
CMP_BPRINT_AND_NONBPRINT(bp, av_channel_name, 1, channel);
}
static void channel_description(AVBPrint *bp, enum AVChannel channel)
{
av_bprint_clear(bp);
CMP_BPRINT_AND_NONBPRINT(bp, av_channel_description, 1, channel);
}
static void channel_layout_from_mask(AVChannelLayout *layout,
AVBPrint *bp, uint64_t channel_layout)
{
av_channel_layout_uninit(layout);
av_bprint_clear(bp);
if (!av_channel_layout_from_mask(layout, channel_layout) &&
av_channel_layout_check(layout))
CMP_BPRINT_AND_NONBPRINT(bp, av_channel_layout_describe, 0, layout);
else
av_bprintf(bp, "fail");
}
static void channel_layout_from_string(AVChannelLayout *layout,
AVBPrint *bp, const char *channel_layout)
{
av_channel_layout_uninit(layout);
av_bprint_clear(bp);
if (!av_channel_layout_from_string(layout, channel_layout) &&
av_channel_layout_check(layout))
CMP_BPRINT_AND_NONBPRINT(bp, av_channel_layout_describe, 0, layout);
else
av_bprintf(bp, "fail");
}
#define CHANNEL_NAME(x) \
channel_name(&bp, (x));
#define CHANNEL_DESCRIPTION(x) \
channel_description(&bp, (x));
#define CHANNEL_LAYOUT_FROM_MASK(x) \
channel_layout_from_mask(&layout, &bp, (x));
#define CHANNEL_LAYOUT_FROM_STRING(x) \
channel_layout_from_string(&layout, &bp, (x));
#define CHANNEL_LAYOUT_CHANNEL_FROM_INDEX(x) \
ret = av_channel_layout_channel_from_index(&layout, x); \
if (ret < 0) \
ret = -1
#define CHANNEL_LAYOUT_SUBSET(x) \
mask = av_channel_layout_subset(&layout, x)
#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)
{
const AVChannelLayout *playout;
AVChannelLayout layout = { 0 }, layout2 = { 0 };
AVBPrint bp;
void *iter = NULL;
uint64_t mask;
int ret;
av_bprint_init(&bp, 64, AV_BPRINT_SIZE_AUTOMATIC);
printf("Testing av_channel_layout_standard\n");
while (playout = av_channel_layout_standard(&iter)) {
av_channel_layout_describe_bprint(playout, &bp);
printf("%-14s ", bp.str);
av_bprint_clear(&bp);
for (int i = 0; i < 63; i++) {
int idx = av_channel_layout_index_from_channel(playout, i);
if (idx >= 0) {
if (idx)
av_bprintf(&bp, "+");
av_channel_name_bprint(&bp, i);
}
}
printf("%s\n", bp.str);
av_bprint_clear(&bp);
}
printf("\nTesting 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);
CHANNEL_NAME(AV_CHAN_AMBISONIC_BASE);
printf("With AV_CHAN_AMBISONIC_BASE: %23s\n", bp.str);
CHANNEL_NAME(AV_CHAN_AMBISONIC_END);
printf("With AV_CHAN_AMBISONIC_END: %24s\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);
CHANNEL_DESCRIPTION(AV_CHAN_AMBISONIC_BASE);
printf("With AV_CHAN_AMBISONIC_BASE: %23s\n", bp.str);
CHANNEL_DESCRIPTION(AV_CHAN_AMBISONIC_END);
printf("With AV_CHAN_AMBISONIC_END: %24s\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("With \"AMBI0\": %38d\n", av_channel_from_string("AMBI0"));
printf("With \"AMBI1023\": %35d\n", av_channel_from_string("AMBI1023"));
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("\nTesting av_channel_layout_subset\n");
CHANNEL_LAYOUT_SUBSET(AV_CH_LAYOUT_STEREO);
printf("On 5.1(side) layout with AV_CH_LAYOUT_STEREO: 0x%"PRIx64"\n", mask);
CHANNEL_LAYOUT_SUBSET(AV_CH_LAYOUT_2POINT1);
printf("On 5.1(side) layout with AV_CH_LAYOUT_2POINT1: 0x%"PRIx64"\n", mask);
CHANNEL_LAYOUT_SUBSET(AV_CH_LAYOUT_4POINT1);
printf("On 5.1(side) layout with AV_CH_LAYOUT_4POINT1: 0x%"PRIx64"\n", mask);
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("ambisonic 1+FR+FL");
printf("With \"ambisonic 1+FR+FL\": %35s\n", bp.str);
CHANNEL_LAYOUT_FROM_STRING("ambisonic 2+FC@Foo");
printf("With \"ambisonic 2+FC@Foo\": %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);
ret = av_channel_layout_copy(&layout2, &layout);
if (ret < 0) {
printf("Copying channel layout \"FR+FL@Foo+USR63@Foo\" failed; "
"ret %d\n", ret);
}
ret = av_channel_layout_compare(&layout, &layout2);
if (ret)
printf("Channel layout and its copy compare unequal; ret: %d\n", ret);
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);
printf("\nTesting av_channel_layout_subset\n");
CHANNEL_LAYOUT_SUBSET(AV_CH_LAYOUT_STEREO);
printf("On \"FR+FL@Foo+USR63@Foo\" layout with AV_CH_LAYOUT_STEREO: 0x%"PRIx64"\n", mask);
CHANNEL_LAYOUT_SUBSET(AV_CH_LAYOUT_QUAD);
printf("On \"FR+FL@Foo+USR63@Foo\" layout with AV_CH_LAYOUT_QUAD: 0x%"PRIx64"\n", mask);
printf("\n==Ambisonic layouts==\n");
printf("\nTesting av_channel_layout_from_string\n");
CHANNEL_LAYOUT_FROM_STRING("ambisonic 1");
printf("With \"ambisonic 1\": %41s\n", bp.str);
CHANNEL_LAYOUT_FROM_STRING("ambisonic 2+stereo");
printf("With \"ambisonic 2+stereo\": %34s\n", bp.str);
printf("\nTesting av_channel_layout_index_from_channel\n");
CHANNEL_LAYOUT_INDEX_FROM_CHANNEL(AV_CHAN_AMBISONIC_BASE);
printf("On \"ambisonic 2+stereo\" layout with AV_CHAN_AMBISONIC_BASE: %d\n", ret);
CHANNEL_LAYOUT_INDEX_FROM_CHANNEL(AV_CHAN_FRONT_LEFT);
printf("On \"ambisonic 2+stereo\" layout with AV_CHAN_FRONT_LEFT: %5d\n", ret);
CHANNEL_LAYOUT_INDEX_FROM_CHANNEL(AV_CHAN_FRONT_RIGHT);
printf("On \"ambisonic 2+stereo\" layout with AV_CHAN_FRONT_RIGHT: %4d\n", ret);
CHANNEL_LAYOUT_INDEX_FROM_CHANNEL(AV_CHAN_BACK_CENTER);
printf("On \"ambisonic 2+stereo\" layout with AV_CHAN_BACK_CENTER: %4d\n", ret);
printf("\nTesting av_channel_layout_channel_from_index\n");
CHANNEL_LAYOUT_CHANNEL_FROM_INDEX(0);
printf("On \"ambisonic 2+stereo\" layout with 0: %22d\n", ret);
CHANNEL_LAYOUT_CHANNEL_FROM_INDEX(9);
printf("On \"ambisonic 2+stereo\" layout with 9: %22d\n", ret);
CHANNEL_LAYOUT_CHANNEL_FROM_INDEX(10);
printf("On \"ambisonic 2+stereo\" layout with 10: %21d\n", ret);
CHANNEL_LAYOUT_CHANNEL_FROM_INDEX(11);
printf("On \"ambisonic 2+stereo\" layout with 11: %21d\n", ret);
printf("\nTesting av_channel_layout_subset\n");
CHANNEL_LAYOUT_SUBSET(AV_CH_LAYOUT_STEREO);
printf("On \"ambisonic 2+stereo\" layout with AV_CH_LAYOUT_STEREO: 0x%"PRIx64"\n", mask);
CHANNEL_LAYOUT_SUBSET(AV_CH_LAYOUT_QUAD);
printf("On \"ambisonic 2+stereo\" layout with AV_CH_LAYOUT_QUAD: 0x%"PRIx64"\n", mask);
av_channel_layout_uninit(&layout);
av_channel_layout_uninit(&layout2);
av_bprint_finalize(&bp, NULL);
return 0;
}
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