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This file is part of PulseAudio.
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PulseAudio is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published
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by the Free Software Foundation; either version 2.1 of the License,
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or (at your option) any later version.
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PulseAudio is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with PulseAudio; if not, see <http://www.gnu.org/licenses/>.
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#include <pulse/sample.h>
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#include <pulsecore/resampler.h>
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#include <pulsecore/macro.h>
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#include <pulsecore/memblock.h>
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int main(int argc, char *argv[]) {
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static const pa_channel_map maps[] = {
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{ 1, { PA_CHANNEL_POSITION_MONO } },
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{ 2, { PA_CHANNEL_POSITION_LEFT, PA_CHANNEL_POSITION_RIGHT } },
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{ 3, { PA_CHANNEL_POSITION_LEFT, PA_CHANNEL_POSITION_RIGHT, PA_CHANNEL_POSITION_CENTER } },
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{ 3, { PA_CHANNEL_POSITION_LEFT, PA_CHANNEL_POSITION_RIGHT, PA_CHANNEL_POSITION_LFE } },
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{ 3, { PA_CHANNEL_POSITION_LEFT, PA_CHANNEL_POSITION_RIGHT, PA_CHANNEL_POSITION_REAR_CENTER } },
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{ 4, { PA_CHANNEL_POSITION_LEFT, PA_CHANNEL_POSITION_RIGHT, PA_CHANNEL_POSITION_CENTER, PA_CHANNEL_POSITION_LFE } },
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{ 4, { PA_CHANNEL_POSITION_LEFT, PA_CHANNEL_POSITION_RIGHT, PA_CHANNEL_POSITION_CENTER, PA_CHANNEL_POSITION_REAR_CENTER } },
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{ 4, { PA_CHANNEL_POSITION_LEFT, PA_CHANNEL_POSITION_RIGHT, PA_CHANNEL_POSITION_REAR_LEFT, PA_CHANNEL_POSITION_REAR_RIGHT } },
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{ 5, { PA_CHANNEL_POSITION_LEFT, PA_CHANNEL_POSITION_RIGHT, PA_CHANNEL_POSITION_REAR_LEFT, PA_CHANNEL_POSITION_REAR_RIGHT, PA_CHANNEL_POSITION_CENTER } },
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{ 5, { PA_CHANNEL_POSITION_LEFT, PA_CHANNEL_POSITION_RIGHT, PA_CHANNEL_POSITION_REAR_LEFT, PA_CHANNEL_POSITION_REAR_RIGHT, PA_CHANNEL_POSITION_LFE } },
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{ 6, { PA_CHANNEL_POSITION_LEFT, PA_CHANNEL_POSITION_RIGHT, PA_CHANNEL_POSITION_REAR_LEFT, PA_CHANNEL_POSITION_REAR_RIGHT, PA_CHANNEL_POSITION_LFE, PA_CHANNEL_POSITION_CENTER } },
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{ 8, { PA_CHANNEL_POSITION_LEFT, PA_CHANNEL_POSITION_RIGHT, PA_CHANNEL_POSITION_REAR_LEFT, PA_CHANNEL_POSITION_REAR_RIGHT, PA_CHANNEL_POSITION_LFE, PA_CHANNEL_POSITION_CENTER, PA_CHANNEL_POSITION_SIDE_LEFT, PA_CHANNEL_POSITION_SIDE_RIGHT } },
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pa_log_set_level(PA_LOG_DEBUG);
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pa_assert_se(pool = pa_mempool_new(false, 0));
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for (i = 0; maps[i].channels > 0; i++)
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for (j = 0; maps[j].channels > 0; j++) {
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char a[PA_CHANNEL_MAP_SNPRINT_MAX], b[PA_CHANNEL_MAP_SNPRINT_MAX];
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pa_sample_spec ss1, ss2;
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pa_log_info("Converting from '%s' to '%s'.\n", pa_channel_map_snprint(a, sizeof(a), &maps[i]), pa_channel_map_snprint(b, sizeof(b), &maps[j]));
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ss1.channels = maps[i].channels;
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ss2.channels = maps[j].channels;
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ss1.rate = ss2.rate = 44100;
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ss1.format = ss2.format = PA_SAMPLE_S16NE;
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r = pa_resampler_new(pool, &ss1, &maps[i], &ss2, &maps[j], PA_RESAMPLER_AUTO, 0);
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/* We don't really care for the resampler. We just want to
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* see the remixing debug output. */
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pa_mempool_free(pool);