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41 lines
1.2 KiB
C
41 lines
1.2 KiB
C
#include "driver_internal.h"
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int audrvMixAdd(AudioDriver* d, int sample_rate, int num_channels)
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{
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if (num_channels < 1 || num_channels > 24)
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return -1;
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if (d->etc->free_mix_buffer_count < num_channels)
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return -1;
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int id = d->etc->first_free_mix;
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if (id < 0)
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return -1;
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d->etc->free_mix_buffer_count -= num_channels;
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d->etc->first_free_mix = d->etc->mixes[id].next_free;
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d->in_mixes[id].volume = 1.0f;
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d->in_mixes[id].sample_rate = sample_rate;
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d->in_mixes[id].buffer_count = num_channels;
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d->in_mixes[id].is_used = true;
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d->in_mixes[id].mix_id = id;
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d->in_mixes[id].node_id = AUDREN_NODEID(2,id,0);
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d->in_mixes[id].dest_mix_id = AUDREN_UNUSED_MIX_ID;
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d->in_mixes[id].dest_splitter_id = AUDREN_UNUSED_SPLITTER_ID;
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return id;
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}
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void audrvMixRemove(AudioDriver* d, int id)
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{
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if (id <= AUDREN_FINAL_MIX_ID || id >= d->config.num_mix_objs)
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return;
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if (!d->in_mixes[id].is_used)
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return;
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d->etc->free_mix_buffer_count += d->in_mixes[id].buffer_count;
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d->etc->mixes[id].next_free = d->etc->first_free_mix;
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d->etc->first_free_mix = id;
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memset(&d->in_mixes[id], 0, sizeof(AudioRendererMixInfoIn));
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}
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