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ffmpeg/libavutil/tests/channel_layout.c

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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/error.h"
#include "libavutil/internal.h"
#include "libavutil/macros.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");
}
static const char* channel_order_names[] = {"UNSPEC", "NATIVE", "CUSTOM", "AMBI"};
static void describe_type(AVBPrint *bp, AVChannelLayout *layout)
{
if (layout->order >= 0 && layout->order < FF_ARRAY_ELEMS(channel_order_names)) {
av_bprintf(bp, "%-6s (", channel_order_names[layout->order]);
av_channel_layout_describe_bprint(layout, bp);
av_bprintf(bp, ")");
} else {
av_bprintf(bp, "???");
}
}
static const char *channel_layout_retype(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)) {
describe_type(bp, layout);
for (int i = 0; i < FF_CHANNEL_ORDER_NB; i++) {
int ret;
AVChannelLayout copy = {0};
av_bprintf(bp, "\n ");
if (av_channel_layout_copy(&copy, layout) < 0)
return "nomem";
ret = av_channel_layout_retype(&copy, i, 0);
if (ret < 0 && (copy.order != layout->order || av_channel_layout_compare(&copy, layout)))
av_bprintf(bp, "failed to keep existing layout on failure");
if (ret >= 0 && copy.order != i)
av_bprintf(bp, "returned success but did not change order");
if (ret == AVERROR(ENOSYS)) {
av_bprintf(bp, " != %s", channel_order_names[i]);
} else if (ret < 0) {
av_bprintf(bp, "FAIL");
} else {
av_bprintf(bp, " %s ", ret ? "~~" : "==");
describe_type(bp, &copy);
}
av_channel_layout_uninit(&copy);
}
} else {
av_bprintf(bp, "fail");
}
return bp->str;
}
#define CHANNEL_NAME(x) \
channel_name(&bp, (x)); \
printf("With %-32s %14s\n", AV_STRINGIFY(x)":", bp.str)
#define CHANNEL_DESCRIPTION(x) \
channel_description(&bp, (x)); \
printf("With %-23s %23s\n", AV_STRINGIFY(x)":", bp.str);
#define CHANNEL_FROM_STRING(x) \
printf("With %-38s %8d\n", AV_STRINGIFY(x)":", av_channel_from_string(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)); \
printf("With \"%s\":%*s %32s\n", x, strlen(x) > 32 ? 0 : 32 - (int)strlen(x), "", bp.str);
#define CHANNEL_LAYOUT_CHANNEL_FROM_INDEX(l, x) \
ret = av_channel_layout_channel_from_index(&layout, x); \
if (ret < 0) \
ret = -1; \
printf("On \"%s\" layout with %2d: %8d\n", l, x, ret)
#define CHANNEL_LAYOUT_SUBSET(l, xstr, x) \
mask = av_channel_layout_subset(&layout, x); \
printf("On \"%s\" layout with %-22s 0x%"PRIx64"\n", l, xstr, mask)
#define CHANNEL_LAYOUT_INDEX_FROM_CHANNEL(l, x) \
ret = av_channel_layout_index_from_channel(&layout, x); \
if (ret < 0) \
ret = -1; \
printf("On \"%s\" layout with %-23s %3d\n", l, AV_STRINGIFY(x)":", ret)
#define CHANNEL_LAYOUT_CHANNEL_FROM_STRING(l, x) \
ret = av_channel_layout_channel_from_string(&layout, x); \
if (ret < 0) \
ret = -1; \
printf("On \"%s\" layout with %-21s %3d\n", bp.str, AV_STRINGIFY(x)":", ret);
#define CHANNEL_LAYOUT_INDEX_FROM_STRING(l, x) \
ret = av_channel_layout_index_from_string(&layout, x); \
if (ret < 0) \
ret = -1; \
printf("On \"%s\" layout with %-20s %3d\n", l, AV_STRINGIFY(x)":", ret);
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);
CHANNEL_NAME(AV_CHAN_FRONT_RIGHT);
CHANNEL_NAME(63);
CHANNEL_NAME(AV_CHAN_AMBISONIC_BASE);
CHANNEL_NAME(AV_CHAN_AMBISONIC_END);
printf("Testing av_channel_description\n");
CHANNEL_DESCRIPTION(AV_CHAN_FRONT_LEFT);
CHANNEL_DESCRIPTION(AV_CHAN_FRONT_RIGHT);
CHANNEL_DESCRIPTION(63);
CHANNEL_DESCRIPTION(AV_CHAN_AMBISONIC_BASE);
CHANNEL_DESCRIPTION(AV_CHAN_AMBISONIC_END);
printf("\nTesting av_channel_from_string\n");
CHANNEL_FROM_STRING("FL");
CHANNEL_FROM_STRING("FR");
CHANNEL_FROM_STRING("USR63");
CHANNEL_FROM_STRING("AMBI0");
CHANNEL_FROM_STRING("AMBI1023");
CHANNEL_FROM_STRING("AMBI1024");
CHANNEL_FROM_STRING("Dummy");
CHANNEL_FROM_STRING("FL@Foo");
CHANNEL_FROM_STRING("Foo@FL");
CHANNEL_FROM_STRING("@FL");
printf("\n==Native layouts==\n");
printf("\nTesting av_channel_layout_from_string\n");
CHANNEL_LAYOUT_FROM_STRING("0x3f");
CHANNEL_LAYOUT_FROM_STRING("63");
CHANNEL_LAYOUT_FROM_STRING("6c");
CHANNEL_LAYOUT_FROM_STRING("6C");
CHANNEL_LAYOUT_FROM_STRING("6 channels");
CHANNEL_LAYOUT_FROM_STRING("6 channels (FL+FR+FC+LFE+BL+BR)");
CHANNEL_LAYOUT_FROM_STRING("FL+FR+FC+LFE+BL+BR");
CHANNEL_LAYOUT_FROM_STRING("5.1");
CHANNEL_LAYOUT_FROM_STRING("FL+FR+USR63");
CHANNEL_LAYOUT_FROM_STRING("FL+FR+FC+LFE+SL+SR");
CHANNEL_LAYOUT_FROM_STRING("5.1(side)");
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(bp.str, 0);
CHANNEL_LAYOUT_CHANNEL_FROM_INDEX(bp.str, 1);
CHANNEL_LAYOUT_CHANNEL_FROM_INDEX(bp.str, 2);
CHANNEL_LAYOUT_CHANNEL_FROM_INDEX(bp.str, 3);
CHANNEL_LAYOUT_CHANNEL_FROM_INDEX(bp.str, 4);
CHANNEL_LAYOUT_CHANNEL_FROM_INDEX(bp.str, 5);
CHANNEL_LAYOUT_CHANNEL_FROM_INDEX(bp.str, 6);
printf("\nTesting av_channel_layout_index_from_channel\n");
CHANNEL_LAYOUT_INDEX_FROM_CHANNEL(bp.str, AV_CHAN_FRONT_LEFT);
CHANNEL_LAYOUT_INDEX_FROM_CHANNEL(bp.str, AV_CHAN_FRONT_RIGHT);
CHANNEL_LAYOUT_INDEX_FROM_CHANNEL(bp.str, AV_CHAN_FRONT_CENTER);
CHANNEL_LAYOUT_INDEX_FROM_CHANNEL(bp.str, AV_CHAN_LOW_FREQUENCY);
CHANNEL_LAYOUT_INDEX_FROM_CHANNEL(bp.str, AV_CHAN_SIDE_LEFT);
CHANNEL_LAYOUT_INDEX_FROM_CHANNEL(bp.str, AV_CHAN_SIDE_RIGHT);
CHANNEL_LAYOUT_INDEX_FROM_CHANNEL(bp.str, AV_CHAN_BACK_CENTER);
printf("\nTesting av_channel_layout_channel_from_string\n");
CHANNEL_LAYOUT_CHANNEL_FROM_STRING(bp.str, "FL");
CHANNEL_LAYOUT_CHANNEL_FROM_STRING(bp.str, "FR");
CHANNEL_LAYOUT_CHANNEL_FROM_STRING(bp.str, "FC");
CHANNEL_LAYOUT_CHANNEL_FROM_STRING(bp.str, "LFE");
CHANNEL_LAYOUT_CHANNEL_FROM_STRING(bp.str, "SL");
CHANNEL_LAYOUT_CHANNEL_FROM_STRING(bp.str, "SR");
CHANNEL_LAYOUT_CHANNEL_FROM_STRING(bp.str, "BC");
CHANNEL_LAYOUT_CHANNEL_FROM_STRING(bp.str, "@");
CHANNEL_LAYOUT_CHANNEL_FROM_STRING(bp.str, "@Foo");
CHANNEL_LAYOUT_CHANNEL_FROM_STRING(bp.str, "FL@Foo");
printf("\nTesting av_channel_layout_index_from_string\n");
CHANNEL_LAYOUT_INDEX_FROM_STRING(bp.str, "FL");
CHANNEL_LAYOUT_INDEX_FROM_STRING(bp.str, "FR");
CHANNEL_LAYOUT_INDEX_FROM_STRING(bp.str, "FC");
CHANNEL_LAYOUT_INDEX_FROM_STRING(bp.str, "LFE");
CHANNEL_LAYOUT_INDEX_FROM_STRING(bp.str, "SL");
CHANNEL_LAYOUT_INDEX_FROM_STRING(bp.str, "SR");
CHANNEL_LAYOUT_INDEX_FROM_STRING(bp.str, "BC");
printf("\nTesting av_channel_layout_subset\n");
CHANNEL_LAYOUT_SUBSET(bp.str, "AV_CH_LAYOUT_STEREO:", AV_CH_LAYOUT_STEREO);
CHANNEL_LAYOUT_SUBSET(bp.str, "AV_CH_LAYOUT_2POINT1:", AV_CH_LAYOUT_2POINT1);
CHANNEL_LAYOUT_SUBSET(bp.str, "AV_CH_LAYOUT_4POINT1:", AV_CH_LAYOUT_4POINT1);
printf("\n==Custom layouts==\n");
printf("\nTesting av_channel_layout_from_string\n");
CHANNEL_LAYOUT_FROM_STRING("FL+FR+FC+BL+BR+LFE");
CHANNEL_LAYOUT_FROM_STRING("2 channels (FR+FL)");
CHANNEL_LAYOUT_FROM_STRING("2 channels (AMBI1023+FL)");
CHANNEL_LAYOUT_FROM_STRING("3 channels (FR+FL)");
CHANNEL_LAYOUT_FROM_STRING("-3 channels (FR+FL)");
CHANNEL_LAYOUT_FROM_STRING("0 channels ()");
CHANNEL_LAYOUT_FROM_STRING("2 channels (FL+FR");
CHANNEL_LAYOUT_FROM_STRING("ambisonic 1+FR+FL");
CHANNEL_LAYOUT_FROM_STRING("ambisonic 2+FC@Foo");
CHANNEL_LAYOUT_FROM_STRING("FL@Foo+FR@Bar");
CHANNEL_LAYOUT_FROM_STRING("FL+stereo");
CHANNEL_LAYOUT_FROM_STRING("stereo+stereo");
CHANNEL_LAYOUT_FROM_STRING("stereo@Boo");
CHANNEL_LAYOUT_FROM_STRING("");
CHANNEL_LAYOUT_FROM_STRING("@");
CHANNEL_LAYOUT_FROM_STRING("@Dummy");
CHANNEL_LAYOUT_FROM_STRING("@FL");
CHANNEL_LAYOUT_FROM_STRING("Dummy");
CHANNEL_LAYOUT_FROM_STRING("Dummy@FL");
CHANNEL_LAYOUT_FROM_STRING("FR+Dummy");
CHANNEL_LAYOUT_FROM_STRING("FR+Dummy@FL");
CHANNEL_LAYOUT_FROM_STRING("UNK+UNSD");
CHANNEL_LAYOUT_FROM_STRING("NONE");
CHANNEL_LAYOUT_FROM_STRING("FR+@FL");
CHANNEL_LAYOUT_FROM_STRING("FL+@");
CHANNEL_LAYOUT_FROM_STRING("FR+FL@Foo+USR63@Foo");
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(bp.str, "FR");
CHANNEL_LAYOUT_INDEX_FROM_STRING(bp.str, "FL");
CHANNEL_LAYOUT_INDEX_FROM_STRING(bp.str, "USR63");
CHANNEL_LAYOUT_INDEX_FROM_STRING(bp.str, "Foo");
CHANNEL_LAYOUT_INDEX_FROM_STRING(bp.str, "@Foo");
CHANNEL_LAYOUT_INDEX_FROM_STRING(bp.str, "FR@Foo");
CHANNEL_LAYOUT_INDEX_FROM_STRING(bp.str, "FL@Foo");
CHANNEL_LAYOUT_INDEX_FROM_STRING(bp.str, "USR63@Foo");
CHANNEL_LAYOUT_INDEX_FROM_STRING(bp.str, "BC");
printf("\nTesting av_channel_layout_channel_from_string\n");
CHANNEL_LAYOUT_CHANNEL_FROM_STRING(bp.str, "FR");
CHANNEL_LAYOUT_CHANNEL_FROM_STRING(bp.str, "FL");
CHANNEL_LAYOUT_CHANNEL_FROM_STRING(bp.str, "USR63");
CHANNEL_LAYOUT_CHANNEL_FROM_STRING(bp.str, "Foo");
CHANNEL_LAYOUT_CHANNEL_FROM_STRING(bp.str, "@Foo");
CHANNEL_LAYOUT_CHANNEL_FROM_STRING(bp.str, "FR@Foo");
CHANNEL_LAYOUT_CHANNEL_FROM_STRING(bp.str, "FL@Foo");
CHANNEL_LAYOUT_CHANNEL_FROM_STRING(bp.str, "USR63@Foo");
CHANNEL_LAYOUT_CHANNEL_FROM_STRING(bp.str, "BC");
printf("\nTesting av_channel_layout_index_from_channel\n");
CHANNEL_LAYOUT_INDEX_FROM_CHANNEL(bp.str, AV_CHAN_FRONT_RIGHT);
CHANNEL_LAYOUT_INDEX_FROM_CHANNEL(bp.str, AV_CHAN_FRONT_LEFT);
CHANNEL_LAYOUT_INDEX_FROM_CHANNEL(bp.str, 63);
CHANNEL_LAYOUT_INDEX_FROM_CHANNEL(bp.str, AV_CHAN_BACK_CENTER);
printf("\nTesting av_channel_layout_channel_from_index\n");
CHANNEL_LAYOUT_CHANNEL_FROM_INDEX(bp.str, 0);
CHANNEL_LAYOUT_CHANNEL_FROM_INDEX(bp.str, 1);
CHANNEL_LAYOUT_CHANNEL_FROM_INDEX(bp.str, 2);
CHANNEL_LAYOUT_CHANNEL_FROM_INDEX(bp.str, 3);
printf("\nTesting av_channel_layout_subset\n");
CHANNEL_LAYOUT_SUBSET(bp.str, "AV_CH_LAYOUT_STEREO:", AV_CH_LAYOUT_STEREO);
CHANNEL_LAYOUT_SUBSET(bp.str, "AV_CH_LAYOUT_QUAD:", AV_CH_LAYOUT_QUAD);
printf("\n==Ambisonic layouts==\n");
printf("\nTesting av_channel_layout_from_string\n");
CHANNEL_LAYOUT_FROM_STRING("ambisonic 1");
CHANNEL_LAYOUT_FROM_STRING("ambisonic 2+stereo");
printf("\nTesting av_channel_layout_index_from_channel\n");
CHANNEL_LAYOUT_INDEX_FROM_CHANNEL(bp.str, AV_CHAN_AMBISONIC_BASE);
CHANNEL_LAYOUT_INDEX_FROM_CHANNEL(bp.str, AV_CHAN_FRONT_LEFT);
CHANNEL_LAYOUT_INDEX_FROM_CHANNEL(bp.str, AV_CHAN_FRONT_RIGHT);
CHANNEL_LAYOUT_INDEX_FROM_CHANNEL(bp.str, AV_CHAN_BACK_CENTER);
printf("\nTesting av_channel_layout_channel_from_index\n");
CHANNEL_LAYOUT_CHANNEL_FROM_INDEX(bp.str, 0);
CHANNEL_LAYOUT_CHANNEL_FROM_INDEX(bp.str, 9);
CHANNEL_LAYOUT_CHANNEL_FROM_INDEX(bp.str, 10);
CHANNEL_LAYOUT_CHANNEL_FROM_INDEX(bp.str, 11);
printf("\nTesting av_channel_layout_subset\n");
CHANNEL_LAYOUT_SUBSET(bp.str, "AV_CH_LAYOUT_STEREO:", AV_CH_LAYOUT_STEREO);
CHANNEL_LAYOUT_SUBSET(bp.str, "AV_CH_LAYOUT_QUAD:", AV_CH_LAYOUT_QUAD);
av_channel_layout_uninit(&layout);
av_channel_layout_uninit(&layout2);
printf("\nTesting av_channel_layout_retype\n");
{
const char* layouts[] = {
"FL@Boo",
"stereo",
"FR+FL",
"ambisonic 2+stereo",
"2C",
NULL
};
for (int i = 0; layouts[i]; i++)
printf("With \"%s\": %s\n", layouts[i], channel_layout_retype(&layout, &bp, layouts[i]));
}
av_bprint_finalize(&bp, NULL);
return 0;
}
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