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53 lines
1.5 KiB
C
53 lines
1.5 KiB
C
#ifndef _MIXING_PRIV_H_
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#define _MIXING_PRIV_H_
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#include "../vgmstream.h"
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#define VGMSTREAM_MAX_MIXING 512
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/* mixing info */
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typedef enum {
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MIX_SWAP,
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MIX_ADD,
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MIX_ADD_COPY,
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MIX_VOLUME,
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MIX_LIMIT,
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MIX_UPMIX,
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MIX_DOWNMIX,
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MIX_KILLMIX,
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MIX_FADE
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} mix_command_t;
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typedef struct {
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mix_command_t command;
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/* common */
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int ch_dst;
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int ch_src;
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float vol;
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/* fade envelope */
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float vol_start; /* volume from pre to start */
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float vol_end; /* volume from end to post */
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char shape; /* curve type */
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int32_t time_pre; /* position before time_start where vol_start applies (-1 = beginning) */
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int32_t time_start; /* fade start position where vol changes from vol_start to vol_end */
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int32_t time_end; /* fade end position where vol changes from vol_start to vol_end */
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int32_t time_post; /* position after time_end where vol_end applies (-1 = end) */
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} mix_command_data;
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typedef struct {
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int mixing_channels; /* max channels needed to mix */
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int output_channels; /* resulting channels after mixing */
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int mixing_on; /* mixing allowed */
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int mixing_count; /* mixing number */
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size_t mixing_size; /* mixing max */
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mix_command_data mixing_chain[VGMSTREAM_MAX_MIXING]; /* effects to apply (could be alloc'ed but to simplify...) */
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float* mixbuf; /* internal mixing buffer */
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/* fades only apply at some points, other mixes are active */
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int has_non_fade;
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int has_fade;
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} mixing_data;
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#endif
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