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mpv/test/chmap_sel.c

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chmap_sel: add multichannel fallback heuristic Instead of just failing during channel map selection, try to select a close layout that makes most sense and upmix/downmix to that instead of failing AO initialization. The heuristic is rather simple, and uses the following steps: 1) If mono is required always prefer stereo to a multichannel upmix. 2) Search for an upmix that is an exact superset of the required channel map. 3) Search for a downmix that is the exact subset of the required channel map. 4) Search for either an upmix or downmix that is the closest (minimum difference of channels) to the required channel map.
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#include "test_helpers.h"
#include "audio/chmap_sel.h"
test: simplify chmap_sel tests
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#define LAYOUTS(...) (char*[]){__VA_ARGS__, NULL}
static void test_sel(const char *input, const char *expected_selection,
char **layouts)
{
chmap_sel: add multichannel fallback heuristic Instead of just failing during channel map selection, try to select a close layout that makes most sense and upmix/downmix to that instead of failing AO initialization. The heuristic is rather simple, and uses the following steps: 1) If mono is required always prefer stereo to a multichannel upmix. 2) Search for an upmix that is an exact superset of the required channel map. 3) Search for a downmix that is the exact subset of the required channel map. 4) Search for either an upmix or downmix that is the closest (minimum difference of channels) to the required channel map.
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struct mp_chmap_sel s = {0};
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struct mp_chmap input_map;
struct mp_chmap expected_map;
assert_true(mp_chmap_from_str(&input_map, bstr0(input)));
assert_true(mp_chmap_from_str(&expected_map, bstr0(expected_selection)));
for (int n = 0; layouts[n]; n++) {
struct mp_chmap tmp;
assert_true(mp_chmap_from_str(&tmp, bstr0(layouts[n])));
int count = s.num_chmaps;
mp_chmap_sel_add_map(&s, &tmp);
assert_true(s.num_chmaps > count); // assure validity and max. count
}
chmap_sel: add multichannel fallback heuristic Instead of just failing during channel map selection, try to select a close layout that makes most sense and upmix/downmix to that instead of failing AO initialization. The heuristic is rather simple, and uses the following steps: 1) If mono is required always prefer stereo to a multichannel upmix. 2) Search for an upmix that is an exact superset of the required channel map. 3) Search for a downmix that is the exact subset of the required channel map. 4) Search for either an upmix or downmix that is the closest (minimum difference of channels) to the required channel map.
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test: simplify chmap_sel tests
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assert_true(mp_chmap_sel_fallback(&s, &input_map));
// We convert expected_map to a chmap and then back to a string to avoid
// problems with ambiguous layouts.
assert_string_equal(mp_chmap_to_str(&input_map),
mp_chmap_to_str(&expected_map));
}
chmap_sel: add multichannel fallback heuristic Instead of just failing during channel map selection, try to select a close layout that makes most sense and upmix/downmix to that instead of failing AO initialization. The heuristic is rather simple, and uses the following steps: 1) If mono is required always prefer stereo to a multichannel upmix. 2) Search for an upmix that is an exact superset of the required channel map. 3) Search for a downmix that is the exact subset of the required channel map. 4) Search for either an upmix or downmix that is the closest (minimum difference of channels) to the required channel map.
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test: simplify chmap_sel tests
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static void test_mp_chmap_sel_fallback_upmix(void **state) {
test_sel("5.1", "7.1", LAYOUTS("7.1"));
chmap_sel: add multichannel fallback heuristic Instead of just failing during channel map selection, try to select a close layout that makes most sense and upmix/downmix to that instead of failing AO initialization. The heuristic is rather simple, and uses the following steps: 1) If mono is required always prefer stereo to a multichannel upmix. 2) Search for an upmix that is an exact superset of the required channel map. 3) Search for a downmix that is the exact subset of the required channel map. 4) Search for either an upmix or downmix that is the closest (minimum difference of channels) to the required channel map.
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}
static void test_mp_chmap_sel_fallback_downmix(void **state) {
test: simplify chmap_sel tests
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test_sel("7.1", "5.1", LAYOUTS("5.1"));
chmap_sel: add multichannel fallback heuristic Instead of just failing during channel map selection, try to select a close layout that makes most sense and upmix/downmix to that instead of failing AO initialization. The heuristic is rather simple, and uses the following steps: 1) If mono is required always prefer stereo to a multichannel upmix. 2) Search for an upmix that is an exact superset of the required channel map. 3) Search for a downmix that is the exact subset of the required channel map. 4) Search for either an upmix or downmix that is the closest (minimum difference of channels) to the required channel map.
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}
static void test_mp_chmap_sel_fallback_incompatible(void **state) {
test: simplify chmap_sel tests
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test_sel("7.1(wide-side)", "7.1", LAYOUTS("7.1"));
chmap_sel: add multichannel fallback heuristic Instead of just failing during channel map selection, try to select a close layout that makes most sense and upmix/downmix to that instead of failing AO initialization. The heuristic is rather simple, and uses the following steps: 1) If mono is required always prefer stereo to a multichannel upmix. 2) Search for an upmix that is an exact superset of the required channel map. 3) Search for a downmix that is the exact subset of the required channel map. 4) Search for either an upmix or downmix that is the closest (minimum difference of channels) to the required channel map.
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}
static void test_mp_chmap_sel_fallback_prefer_compatible(void **state) {
audio: redo channel map fallback selection Instead of somehow having 4 different cases with each their own weight, do it with a single function that decides which channel layout is the better fallback. This is simpler, and also introduces new (fixed) semantics. The new test added to test/chmap_sel.c actually works now. This is a mixed case with no perfect upmix or downmix, but the better choice is the one which loses the least channels from the original layout. One test also changes. If the input is 7.1(wide-side), and the available layouts are 7.1 and 5.1(side), the latter is now chosen instead of the former. This makes sense: both layouts contain 6 out of 8 channels from the original layout, but the 5.1(side) one is smaller. This follows the general logic. The 7.1 layout has FLC/RLC speakers instead of BL/BR, and judging by the names, "front left center" is completely different from "back left". If these should be exchangeable, a separate exception would have to be added.
2015-05-08 17:33:17 +00:00
test_sel("7.1(wide-side)", "5.1(side)", LAYOUTS("7.1", "5.1(side)"));
chmap_sel: add multichannel fallback heuristic Instead of just failing during channel map selection, try to select a close layout that makes most sense and upmix/downmix to that instead of failing AO initialization. The heuristic is rather simple, and uses the following steps: 1) If mono is required always prefer stereo to a multichannel upmix. 2) Search for an upmix that is an exact superset of the required channel map. 3) Search for a downmix that is the exact subset of the required channel map. 4) Search for either an upmix or downmix that is the closest (minimum difference of channels) to the required channel map.
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}
static void test_mp_chmap_sel_fallback_prefer_closest_upmix(void **state) {
test: simplify chmap_sel tests
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test_sel("3.1", "5.1", LAYOUTS("7.1", "5.1", "2.1", "stereo", "mono"));
chmap_sel: add multichannel fallback heuristic Instead of just failing during channel map selection, try to select a close layout that makes most sense and upmix/downmix to that instead of failing AO initialization. The heuristic is rather simple, and uses the following steps: 1) If mono is required always prefer stereo to a multichannel upmix. 2) Search for an upmix that is an exact superset of the required channel map. 3) Search for a downmix that is the exact subset of the required channel map. 4) Search for either an upmix or downmix that is the closest (minimum difference of channels) to the required channel map.
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}
static void test_mp_chmap_sel_fallback_use_replacements(void **state) {
test: simplify chmap_sel tests
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test_sel("5.1", "7.1(rear)", LAYOUTS("7.1(rear)"));
chmap_sel: add multichannel fallback heuristic Instead of just failing during channel map selection, try to select a close layout that makes most sense and upmix/downmix to that instead of failing AO initialization. The heuristic is rather simple, and uses the following steps: 1) If mono is required always prefer stereo to a multichannel upmix. 2) Search for an upmix that is an exact superset of the required channel map. 3) Search for a downmix that is the exact subset of the required channel map. 4) Search for either an upmix or downmix that is the closest (minimum difference of channels) to the required channel map.
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}
static void test_mp_chmap_sel_fallback_works_on_alsa_chmaps(void **state) {
test: simplify chmap_sel tests
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test_sel("5.1", "7.1(alsa)", LAYOUTS("7.1(alsa)"));
chmap_sel: add multichannel fallback heuristic Instead of just failing during channel map selection, try to select a close layout that makes most sense and upmix/downmix to that instead of failing AO initialization. The heuristic is rather simple, and uses the following steps: 1) If mono is required always prefer stereo to a multichannel upmix. 2) Search for an upmix that is an exact superset of the required channel map. 3) Search for a downmix that is the exact subset of the required channel map. 4) Search for either an upmix or downmix that is the closest (minimum difference of channels) to the required channel map.
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}
static void test_mp_chmap_sel_fallback_mono_to_stereo(void **state) {
test: simplify chmap_sel tests
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test_sel("mono", "stereo", LAYOUTS("stereo", "5.1"));
chmap_sel: add multichannel fallback heuristic Instead of just failing during channel map selection, try to select a close layout that makes most sense and upmix/downmix to that instead of failing AO initialization. The heuristic is rather simple, and uses the following steps: 1) If mono is required always prefer stereo to a multichannel upmix. 2) Search for an upmix that is an exact superset of the required channel map. 3) Search for a downmix that is the exact subset of the required channel map. 4) Search for either an upmix or downmix that is the closest (minimum difference of channels) to the required channel map.
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}
static void test_mp_chmap_sel_fallback_stereo_to_stereo(void **state) {
test: simplify chmap_sel tests
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test_sel("stereo", "stereo", LAYOUTS("stereo", "5.1"));
chmap_sel: add multichannel fallback heuristic Instead of just failing during channel map selection, try to select a close layout that makes most sense and upmix/downmix to that instead of failing AO initialization. The heuristic is rather simple, and uses the following steps: 1) If mono is required always prefer stereo to a multichannel upmix. 2) Search for an upmix that is an exact superset of the required channel map. 3) Search for a downmix that is the exact subset of the required channel map. 4) Search for either an upmix or downmix that is the closest (minimum difference of channels) to the required channel map.
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}
audio: avoid downmixing in a certain special-case As indicated by the added test. In this case, fallback and downmix have the same score, but fallback happens to give better results. So prefer fallback over downmix. (This is probably not a correct solution.)
2015-04-27 21:21:14 +00:00
static void test_mp_chmap_sel_fallback_no_downmix(void **state) {
test: simplify chmap_sel tests
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test_sel("5.1(side)", "7.1(rear)", LAYOUTS("stereo", "7.1(rear)"));
}
audio: redo channel map fallback selection Instead of somehow having 4 different cases with each their own weight, do it with a single function that decides which channel layout is the better fallback. This is simpler, and also introduces new (fixed) semantics. The new test added to test/chmap_sel.c actually works now. This is a mixed case with no perfect upmix or downmix, but the better choice is the one which loses the least channels from the original layout. One test also changes. If the input is 7.1(wide-side), and the available layouts are 7.1 and 5.1(side), the latter is now chosen instead of the former. This makes sense: both layouts contain 6 out of 8 channels from the original layout, but the 5.1(side) one is smaller. This follows the general logic. The 7.1 layout has FLC/RLC speakers instead of BL/BR, and judging by the names, "front left center" is completely different from "back left". If these should be exchangeable, a separate exception would have to be added.
2015-05-08 17:33:17 +00:00
static void test_mp_chmap_sel_fallback_minimal_downmix(void **state) {
test_sel("7.1", "fl-fr-lfe-fc-bl-br-flc-frc",
LAYOUTS("fl-fr-lfe-fc-bl-br-flc-frc", "3.0(back)"));
}
test: simplify chmap_sel tests
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static void test_mp_chmap_sel_fallback_reject_unknown(void **state) {
audio: avoid downmixing in a certain special-case As indicated by the added test. In this case, fallback and downmix have the same score, but fallback happens to give better results. So prefer fallback over downmix. (This is probably not a correct solution.)
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struct mp_chmap a;
struct mp_chmap b;
struct mp_chmap_sel s = {0};
test: simplify chmap_sel tests
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mp_chmap_set_unknown(&a, 2);
mp_chmap_from_str(&b, bstr0("5.1"));
audio: avoid downmixing in a certain special-case As indicated by the added test. In this case, fallback and downmix have the same score, but fallback happens to give better results. So prefer fallback over downmix. (This is probably not a correct solution.)
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mp_chmap_sel_add_map(&s, &a);
test: simplify chmap_sel tests
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assert_false(mp_chmap_sel_fallback(&s, &b));
assert_string_equal(mp_chmap_to_str(&b), "5.1");
audio: avoid downmixing in a certain special-case As indicated by the added test. In this case, fallback and downmix have the same score, but fallback happens to give better results. So prefer fallback over downmix. (This is probably not a correct solution.)
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}
chmap_sel: improve speaker replacement handling This didn't really work since the last time the channel map fallback code was touched. In some cases, quite bad results were selected.
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static void test_mp_chmap_sel_fallback_more_replacements(void **state) {
test_sel("quad", "quad(side)", LAYOUTS("quad(side)", "stereo"));
test_sel("quad", "7.0", LAYOUTS("quad(side)", "7.0"));
test_sel("quad", "7.0", LAYOUTS("7.0", "quad(side)"));
test_sel("quad", "7.1(wide-side)", LAYOUTS("7.1(wide-side)", "stereo"));
test_sel("quad", "7.1(wide-side)", LAYOUTS("stereo", "7.1(wide-side)"));
test_sel("quad", "fl-fr-fc-bl-br",
LAYOUTS("fl-fr-fc-bl-br", "fl-fr-sl-sr"));
test_sel("quad", "fl-fr-bl-br-na-na-na-na",
LAYOUTS("fl-fr-bl-br-na-na-na-na", "quad(side)", "stereo"));
test_sel("quad", "fl-fr-bl-br-na-na-na-na",
LAYOUTS("stereo", "quad(side)", "fl-fr-bl-br-na-na-na-na"));
audio: fix channel map fallback selection (again) The speaker replacement nonsense sometimes made blatantly incorrect decisions. In this case, it prefered a 7.1(rear) upmix over outputting 5.1(side) as 5.1, which makes no sense at all. This happened because 5.1 and 7.1(rear) appeared equivalent to the final selection, as both of them lose the sl-sr channels. The old code was too stupid to select the one with the lower number of channels as well. Redo this. There's really no reason why there should be a separate final decision, so move the speaker replacement logic into the mp_chmap_is_better() function. Improve some other details. For example, we never should compare the plain number of channels for deciding upmix/downmix, because due to NA channels this is essentially meaningless. Remove the NA channels when doing this comparison. Also, explicitly handle exact matches. Conceptually this is not necessary, but it avoids that we have to needlessly shuffle audio data around.
2015-06-25 15:32:00 +00:00
test_sel("fl-fr-fc-lfe-sl-sr", "fl-fr-lfe-fc-bl-br-na-na",
LAYOUTS("fl-fr-lfe-fc-bl-br-na-na", "fl-fr-lfe-fc-bl-br-sdl-sdr"));
test_sel("fl-fr-fc-lfe-sl-sr", "fl-fr-lfe-fc-bl-br-na-na",
LAYOUTS("fl-fr-lfe-fc-bl-br-sdl-sdr", "fl-fr-lfe-fc-bl-br-na-na"));
}
static void test_mp_chmap_sel_fallback_na_channels(void **state) {
test_sel("na-fl-fr", "na-fl-fr", LAYOUTS("na-fl-fr-na", "fl-na-fr", "na-fl-fr",
"fl-fr-na-na", "na-na-fl-fr"));
chmap_sel: improve speaker replacement handling This didn't really work since the last time the channel map fallback code was touched. In some cases, quite bad results were selected.
2015-06-12 17:23:46 +00:00
}
chmap_sel: add multichannel fallback heuristic Instead of just failing during channel map selection, try to select a close layout that makes most sense and upmix/downmix to that instead of failing AO initialization. The heuristic is rather simple, and uses the following steps: 1) If mono is required always prefer stereo to a multichannel upmix. 2) Search for an upmix that is an exact superset of the required channel map. 3) Search for a downmix that is the exact subset of the required channel map. 4) Search for either an upmix or downmix that is the closest (minimum difference of channels) to the required channel map.
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int main(void) {
test: update cmocka version to 1.0
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const struct CMUnitTest tests[] = {
cmocka_unit_test(test_mp_chmap_sel_fallback_upmix),
cmocka_unit_test(test_mp_chmap_sel_fallback_downmix),
cmocka_unit_test(test_mp_chmap_sel_fallback_incompatible),
cmocka_unit_test(test_mp_chmap_sel_fallback_prefer_compatible),
cmocka_unit_test(test_mp_chmap_sel_fallback_prefer_closest_upmix),
cmocka_unit_test(test_mp_chmap_sel_fallback_use_replacements),
cmocka_unit_test(test_mp_chmap_sel_fallback_works_on_alsa_chmaps),
cmocka_unit_test(test_mp_chmap_sel_fallback_mono_to_stereo),
cmocka_unit_test(test_mp_chmap_sel_fallback_stereo_to_stereo),
cmocka_unit_test(test_mp_chmap_sel_fallback_no_downmix),
cmocka_unit_test(test_mp_chmap_sel_fallback_minimal_downmix),
cmocka_unit_test(test_mp_chmap_sel_fallback_reject_unknown),
cmocka_unit_test(test_mp_chmap_sel_fallback_more_replacements),
audio: fix channel map fallback selection (again) The speaker replacement nonsense sometimes made blatantly incorrect decisions. In this case, it prefered a 7.1(rear) upmix over outputting 5.1(side) as 5.1, which makes no sense at all. This happened because 5.1 and 7.1(rear) appeared equivalent to the final selection, as both of them lose the sl-sr channels. The old code was too stupid to select the one with the lower number of channels as well. Redo this. There's really no reason why there should be a separate final decision, so move the speaker replacement logic into the mp_chmap_is_better() function. Improve some other details. For example, we never should compare the plain number of channels for deciding upmix/downmix, because due to NA channels this is essentially meaningless. Remove the NA channels when doing this comparison. Also, explicitly handle exact matches. Conceptually this is not necessary, but it avoids that we have to needlessly shuffle audio data around.
2015-06-25 15:32:00 +00:00
cmocka_unit_test(test_mp_chmap_sel_fallback_na_channels),
chmap_sel: add multichannel fallback heuristic Instead of just failing during channel map selection, try to select a close layout that makes most sense and upmix/downmix to that instead of failing AO initialization. The heuristic is rather simple, and uses the following steps: 1) If mono is required always prefer stereo to a multichannel upmix. 2) Search for an upmix that is an exact superset of the required channel map. 3) Search for a downmix that is the exact subset of the required channel map. 4) Search for either an upmix or downmix that is the closest (minimum difference of channels) to the required channel map.
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};
test: update cmocka version to 1.0
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return cmocka_run_group_tests(tests, NULL, NULL);
chmap_sel: add multichannel fallback heuristic Instead of just failing during channel map selection, try to select a close layout that makes most sense and upmix/downmix to that instead of failing AO initialization. The heuristic is rather simple, and uses the following steps: 1) If mono is required always prefer stereo to a multichannel upmix. 2) Search for an upmix that is an exact superset of the required channel map. 3) Search for a downmix that is the exact subset of the required channel map. 4) Search for either an upmix or downmix that is the closest (minimum difference of channels) to the required channel map.
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}
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