mirror of
https://github.com/vgmstream/vgmstream.git
synced 2024-11-12 01:30:49 +01:00
commit
90cbeff228
1076
src/base/mixing.c
1076
src/base/mixing.c
File diff suppressed because it is too large
Load Diff
254
src/base/mixing_commands.c
Normal file
254
src/base/mixing_commands.c
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@ -0,0 +1,254 @@
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#include "../vgmstream.h"
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#include "../util/channel_mappings.h"
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#include "mixing.h"
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#include "mixing_priv.h"
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#include <math.h>
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#include <limits.h>
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static int add_mixing(VGMSTREAM* vgmstream, mix_command_data *mix) {
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mixing_data *data = vgmstream->mixing_data;
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if (!data) return 0;
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if (data->mixing_on) {
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VGM_LOG("MIX: ignoring new mixes when mixing active\n");
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return 0; /* to avoid down/upmixing after activation */
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}
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if (data->mixing_count + 1 > data->mixing_size) {
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VGM_LOG("MIX: too many mixes\n");
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return 0;
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}
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data->mixing_chain[data->mixing_count] = *mix; /* memcpy */
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data->mixing_count++;
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if (mix->command == MIX_FADE) {
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data->has_fade = 1;
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}
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else {
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data->has_non_fade = 1;
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}
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//;VGM_LOG("MIX: total %i\n", data->mixing_count);
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return 1;
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}
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void mixing_push_swap(VGMSTREAM* vgmstream, int ch_dst, int ch_src) {
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mixing_data *data = vgmstream->mixing_data;
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mix_command_data mix = {0};
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if (ch_dst < 0 || ch_src < 0 || ch_dst == ch_src) return;
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if (!data || ch_dst >= data->output_channels || ch_src >= data->output_channels) return;
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mix.command = MIX_SWAP;
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mix.ch_dst = ch_dst;
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mix.ch_src = ch_src;
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add_mixing(vgmstream, &mix);
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}
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void mixing_push_add(VGMSTREAM* vgmstream, int ch_dst, int ch_src, double volume) {
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mixing_data *data = vgmstream->mixing_data;
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mix_command_data mix = {0};
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if (!data) return;
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//if (volume < 0.0) return; /* negative volume inverts the waveform */
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if (volume == 0.0) return; /* ch_src becomes silent and nothing is added */
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if (ch_dst < 0 || ch_src < 0) return;
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if (!data || ch_dst >= data->output_channels || ch_src >= data->output_channels) return;
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mix.command = (volume == 1.0) ? MIX_ADD_COPY : MIX_ADD;
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mix.ch_dst = ch_dst;
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mix.ch_src = ch_src;
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mix.vol = volume;
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//;VGM_LOG("MIX: add %i+%i*%f\n", ch_dst,ch_src,volume);
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add_mixing(vgmstream, &mix);
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}
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void mixing_push_volume(VGMSTREAM* vgmstream, int ch_dst, double volume) {
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mixing_data *data = vgmstream->mixing_data;
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mix_command_data mix = {0};
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//if (ch_dst < 0) return; /* means all channels */
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//if (volume < 0.0) return; /* negative volume inverts the waveform */
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if (volume == 1.0) return; /* no change */
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if (!data || ch_dst >= data->output_channels) return;
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mix.command = MIX_VOLUME; //if (volume == 0.0) MIX_VOLUME0 /* could simplify */
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mix.ch_dst = ch_dst;
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mix.vol = volume;
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//;VGM_LOG("MIX: volume %i*%f\n", ch_dst,volume);
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add_mixing(vgmstream, &mix);
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}
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void mixing_push_limit(VGMSTREAM* vgmstream, int ch_dst, double volume) {
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mixing_data *data = vgmstream->mixing_data;
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mix_command_data mix = {0};
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//if (ch_dst < 0) return; /* means all channels */
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if (volume < 0.0) return;
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if (volume == 1.0) return; /* no actual difference */
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if (!data || ch_dst >= data->output_channels) return;
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//if (volume == 0.0) return; /* dumb but whatevs */
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mix.command = MIX_LIMIT;
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mix.ch_dst = ch_dst;
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mix.vol = volume;
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add_mixing(vgmstream, &mix);
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}
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void mixing_push_upmix(VGMSTREAM* vgmstream, int ch_dst) {
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mixing_data *data = vgmstream->mixing_data;
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mix_command_data mix = {0};
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int ok;
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if (ch_dst < 0) return;
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if (!data || ch_dst > data->output_channels || data->output_channels +1 > VGMSTREAM_MAX_CHANNELS) return;
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/* dst can be == output_channels here, since we are inserting */
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mix.command = MIX_UPMIX;
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mix.ch_dst = ch_dst;
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ok = add_mixing(vgmstream, &mix);
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if (ok) {
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data->output_channels += 1;
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if (data->mixing_channels < data->output_channels)
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data->mixing_channels = data->output_channels;
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}
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}
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void mixing_push_downmix(VGMSTREAM* vgmstream, int ch_dst) {
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mixing_data *data = vgmstream->mixing_data;
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mix_command_data mix = {0};
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int ok;
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if (ch_dst < 0) return;
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if (!data || ch_dst >= data->output_channels || data->output_channels - 1 < 1) return;
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mix.command = MIX_DOWNMIX;
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mix.ch_dst = ch_dst;
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ok = add_mixing(vgmstream, &mix);
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if (ok) {
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data->output_channels -= 1;
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}
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}
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void mixing_push_killmix(VGMSTREAM* vgmstream, int ch_dst) {
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mixing_data *data = vgmstream->mixing_data;
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mix_command_data mix = {0};
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int ok;
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if (ch_dst <= 0) return; /* can't kill from first channel */
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if (!data || ch_dst >= data->output_channels) return;
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mix.command = MIX_KILLMIX;
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mix.ch_dst = ch_dst;
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//;VGM_LOG("MIX: killmix %i\n", ch_dst);
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ok = add_mixing(vgmstream, &mix);
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if (ok) {
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data->output_channels = ch_dst; /* clamp channels */
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}
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}
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static mix_command_data* get_last_fade(mixing_data *data, int target_channel) {
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int i;
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for (i = data->mixing_count; i > 0; i--) {
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mix_command_data *mix = &data->mixing_chain[i-1];
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if (mix->command != MIX_FADE)
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continue;
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if (mix->ch_dst == target_channel)
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return mix;
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}
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return NULL;
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}
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void mixing_push_fade(VGMSTREAM* vgmstream, int ch_dst, double vol_start, double vol_end, char shape,
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int32_t time_pre, int32_t time_start, int32_t time_end, int32_t time_post) {
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mixing_data *data = vgmstream->mixing_data;
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mix_command_data mix = {0};
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mix_command_data *mix_prev;
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//if (ch_dst < 0) return; /* means all channels */
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if (!data || ch_dst >= data->output_channels) return;
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if (time_pre > time_start || time_start > time_end || (time_post >= 0 && time_end > time_post)) return;
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if (time_start < 0 || time_end < 0) return;
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//if (time_pre < 0 || time_post < 0) return; /* special meaning of file start/end */
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//if (vol_start == vol_end) /* weird but let in case of being used to cancel others fades... maybe? */
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if (shape == '{' || shape == '}')
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shape = 'E';
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if (shape == '(' || shape == ')')
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shape = 'H';
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mix.command = MIX_FADE;
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mix.ch_dst = ch_dst;
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mix.vol_start = vol_start;
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mix.vol_end = vol_end;
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mix.shape = shape;
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mix.time_pre = time_pre;
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mix.time_start = time_start;
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mix.time_end = time_end;
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mix.time_post = time_post;
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/* cancel fades and optimize a bit when using negative pre/post:
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* - fades work like this:
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* <----------|----------|---------->
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* pre1 start1 end1 post1
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* - when pre and post are set nothing is done (fade is exact and multiple fades may overlap)
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* - when previous fade's post or current fade's pre are negative (meaning file end/start)
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* they should cancel each other (to allow chaining fade-in + fade-out + fade-in + etc):
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* <----------|----------|----------| |----------|----------|---------->
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* pre1 start1 end1 post1 pre2 start2 end2 post2
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* - other cases (previous fade is actually after/in-between current fade) are ignored
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* as they're uncommon and hard to optimize
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* fades cancel fades of the same channel, and 'all channel' (-1) fades also cancel 'all channels'
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*/
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mix_prev = get_last_fade(data, mix.ch_dst);
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if (mix_prev == NULL) {
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if (vol_start == 1.0 && time_pre < 0)
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time_pre = time_start; /* fade-out helds default volume before fade start can be clamped */
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if (vol_end == 1.0 && time_post < 0)
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time_post = time_end; /* fade-in helds default volume after fade end can be clamped */
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}
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else if (mix_prev->time_post < 0 || mix.time_pre < 0) {
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int is_prev = 1;
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/* test if prev is really cancelled by this */
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if ((mix_prev->time_end > mix.time_start) ||
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(mix_prev->time_post >= 0 && mix_prev->time_post > mix.time_start) ||
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(mix.time_pre >= 0 && mix.time_pre < mix_prev->time_end))
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is_prev = 0;
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if (is_prev) {
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/* change negative values to actual points */
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if (mix_prev->time_post < 0 && mix.time_pre < 0) {
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mix_prev->time_post = mix_prev->time_end;
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mix.time_pre = mix_prev->time_post;
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}
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if (mix_prev->time_post >= 0 && mix.time_pre < 0) {
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mix.time_pre = mix_prev->time_post;
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}
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else if (mix_prev->time_post < 0 && mix.time_pre >= 0) {
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mix_prev->time_post = mix.time_pre;
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}
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/* else: both define start/ends, do nothing */
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}
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/* should only modify prev if add_mixing but meh */
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}
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//;VGM_LOG("MIX: fade %i^%f~%f=%c@%i~%i~%i~%i\n", ch_dst, vol_start, vol_end, shape, time_pre, time_start, time_end, time_post);
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add_mixing(vgmstream, &mix);
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}
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171
src/base/mixing_fades.h
Normal file
171
src/base/mixing_fades.h
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@ -0,0 +1,171 @@
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#ifndef _MIXING_FADE_H_
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#define _MIXING_FADE_H_
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#include "mixing_priv.h"
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#include <math.h>
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#include <limits.h>
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#define MIXING_PI 3.14159265358979323846f
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static inline int is_fade_active(mixing_data *data, int32_t current_start, int32_t current_end) {
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int i;
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for (i = 0; i < data->mixing_count; i++) {
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mix_command_data *mix = &data->mixing_chain[i];
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int32_t fade_start, fade_end;
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float vol_start = mix->vol_start;
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if (mix->command != MIX_FADE)
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continue;
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/* check is current range falls within a fade
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* (assuming fades were already optimized on add) */
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if (mix->time_pre < 0 && vol_start == 1.0) {
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fade_start = mix->time_start; /* ignore unused */
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}
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else {
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fade_start = mix->time_pre < 0 ? 0 : mix->time_pre;
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}
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fade_end = mix->time_post < 0 ? INT_MAX : mix->time_post;
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//;VGM_LOG("MIX: fade test, tp=%i, te=%i, cs=%i, ce=%i\n", mix->time_pre, mix->time_post, current_start, current_end);
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if (current_start < fade_end && current_end > fade_start) {
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//;VGM_LOG("MIX: fade active, cs=%i < fe=%i and ce=%i > fs=%i\n", current_start, fade_end, current_end, fade_start);
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return 1;
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}
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}
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return 0;
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}
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static inline int32_t get_current_pos(VGMSTREAM* vgmstream, int32_t sample_count) {
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int32_t current_pos;
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if (vgmstream->config_enabled) {
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return vgmstream->pstate.play_position;
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}
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if (vgmstream->loop_flag && vgmstream->loop_count > 0) {
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int loop_pre = vgmstream->loop_start_sample; /* samples before looping */
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int loop_into = (vgmstream->current_sample - vgmstream->loop_start_sample); /* samples after loop */
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int loop_samples = (vgmstream->loop_end_sample - vgmstream->loop_start_sample); /* looped section */
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current_pos = loop_pre + (loop_samples * vgmstream->loop_count) + loop_into - sample_count;
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}
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else {
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current_pos = (vgmstream->current_sample - sample_count);
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}
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return current_pos;
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}
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static inline float get_fade_gain_curve(char shape, float index) {
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float gain;
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/* don't bother doing calcs near 0.0/1.0 */
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if (index <= 0.0001f || index >= 0.9999f) {
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return index;
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}
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//todo optimizations: interleave calcs, maybe use cosf, powf, etc? (with extra defines)
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/* (curve math mostly from SoX/FFmpeg) */
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switch(shape) {
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/* 2.5f in L/E 'pow' is the attenuation factor, where 5.0 (100db) is common but a bit fast
|
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* (alt calculations with 'exp' from FFmpeg use (factor)*ln(0.1) = -NN.N... */
|
||||
|
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case 'E': /* exponential (for fade-outs, closer to natural decay of sound) */
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//gain = pow(0.1f, (1.0f - index) * 2.5f);
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||||
gain = exp(-5.75646273248511f * (1.0f - index));
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||||
break;
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case 'L': /* logarithmic (inverse of the above, maybe for crossfades) */
|
||||
//gain = 1 - pow(0.1f, (index) * 2.5f);
|
||||
gain = 1 - exp(-5.75646273248511f * (index));
|
||||
break;
|
||||
|
||||
case 'H': /* raised sine wave or cosine wave (for more musical crossfades) */
|
||||
gain = (1.0f - cos(index * MIXING_PI)) / 2.0f;
|
||||
break;
|
||||
|
||||
case 'Q': /* quarter of sine wave (for musical fades) */
|
||||
gain = sin(index * MIXING_PI / 2.0f);
|
||||
break;
|
||||
|
||||
case 'p': /* parabola (maybe for crossfades) */
|
||||
gain = 1.0f - sqrt(1.0f - index);
|
||||
break;
|
||||
case 'P': /* inverted parabola (maybe for fades) */
|
||||
gain = (1.0f - (1.0f - index) * (1.0f - index));
|
||||
break;
|
||||
|
||||
case 'T': /* triangular/linear (simpler/sharper fades) */
|
||||
default:
|
||||
gain = index;
|
||||
break;
|
||||
}
|
||||
|
||||
return gain;
|
||||
}
|
||||
|
||||
static int get_fade_gain(mix_command_data *mix, float *out_cur_vol, int32_t current_subpos) {
|
||||
float cur_vol = 0.0f;
|
||||
|
||||
if ((current_subpos >= mix->time_pre || mix->time_pre < 0) && current_subpos < mix->time_start) {
|
||||
cur_vol = mix->vol_start; /* before */
|
||||
}
|
||||
else if (current_subpos >= mix->time_end && (current_subpos < mix->time_post || mix->time_post < 0)) {
|
||||
cur_vol = mix->vol_end; /* after */
|
||||
}
|
||||
else if (current_subpos >= mix->time_start && current_subpos < mix->time_end) {
|
||||
/* in between */
|
||||
float range_vol, range_dur, range_idx, index, gain;
|
||||
|
||||
if (mix->vol_start < mix->vol_end) { /* fade in */
|
||||
range_vol = mix->vol_end - mix->vol_start;
|
||||
range_dur = mix->time_end - mix->time_start;
|
||||
range_idx = current_subpos - mix->time_start;
|
||||
index = range_idx / range_dur;
|
||||
} else { /* fade out */
|
||||
range_vol = mix->vol_end - mix->vol_start;
|
||||
range_dur = mix->time_end - mix->time_start;
|
||||
range_idx = mix->time_end - current_subpos;
|
||||
index = range_idx / range_dur;
|
||||
}
|
||||
|
||||
/* Fading is done like this:
|
||||
* - find current position within fade duration
|
||||
* - get linear % (or rather, index from 0.0 .. 1.0) of duration
|
||||
* - apply shape to % (from linear fade to curved fade)
|
||||
* - get final volume for that point
|
||||
*
|
||||
* Roughly speaking some curve shapes are better for fades (decay rate is more natural
|
||||
* sounding in that highest to mid/low happens faster but low to lowest takes more time,
|
||||
* kinda like a gunshot or bell), and others for crossfades (decay of fade-in + fade-out
|
||||
* is adjusted so that added volume level stays constant-ish).
|
||||
*
|
||||
* As curves can fade in two ways ('normal' and curving 'the other way'), they are adjusted
|
||||
* to get 'normal' shape on both fades (by reversing index and making 1 - gain), thus some
|
||||
* curves are complementary (exponential fade-in ~= logarithmic fade-out); the following
|
||||
* are described taking fade-in = normal.
|
||||
*/
|
||||
gain = get_fade_gain_curve(mix->shape, index);
|
||||
|
||||
if (mix->vol_start < mix->vol_end) { /* fade in */
|
||||
cur_vol = mix->vol_start + range_vol * gain;
|
||||
} else { /* fade out */
|
||||
cur_vol = mix->vol_end - range_vol * gain; //mix->vol_start - range_vol * (1 - gain);
|
||||
}
|
||||
}
|
||||
else {
|
||||
/* fade is outside reach */
|
||||
goto fail;
|
||||
}
|
||||
|
||||
*out_cur_vol = cur_vol;
|
||||
return 1;
|
||||
fail:
|
||||
return 0;
|
||||
}
|
||||
|
||||
#endif
|
578
src/base/mixing_macros.c
Normal file
578
src/base/mixing_macros.c
Normal file
@ -0,0 +1,578 @@
|
||||
#include "../vgmstream.h"
|
||||
#include "../util/channel_mappings.h"
|
||||
#include "mixing.h"
|
||||
#include "mixing_priv.h"
|
||||
#include <math.h>
|
||||
#include <limits.h>
|
||||
|
||||
|
||||
#define MIX_MACRO_VOCALS 'v'
|
||||
#define MIX_MACRO_EQUAL 'e'
|
||||
#define MIX_MACRO_BGM 'b'
|
||||
|
||||
void mixing_macro_volume(VGMSTREAM* vgmstream, double volume, uint32_t mask) {
|
||||
mixing_data *data = vgmstream->mixing_data;
|
||||
int ch;
|
||||
|
||||
if (!data)
|
||||
return;
|
||||
|
||||
if (mask == 0) {
|
||||
mixing_push_volume(vgmstream, -1, volume);
|
||||
return;
|
||||
}
|
||||
|
||||
for (ch = 0; ch < data->output_channels; ch++) {
|
||||
if (!((mask >> ch) & 1))
|
||||
continue;
|
||||
mixing_push_volume(vgmstream, ch, volume);
|
||||
}
|
||||
}
|
||||
|
||||
void mixing_macro_track(VGMSTREAM* vgmstream, uint32_t mask) {
|
||||
mixing_data *data = vgmstream->mixing_data;
|
||||
int ch;
|
||||
|
||||
if (!data)
|
||||
return;
|
||||
|
||||
if (mask == 0) {
|
||||
return;
|
||||
}
|
||||
|
||||
/* reverse remove all channels (easier this way as when removing channels numbers change) */
|
||||
for (ch = data->output_channels - 1; ch >= 0; ch--) {
|
||||
if ((mask >> ch) & 1)
|
||||
continue;
|
||||
mixing_push_downmix(vgmstream, ch);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/* get highest channel count */
|
||||
static int get_layered_max_channels(VGMSTREAM* vgmstream) {
|
||||
int i, max;
|
||||
layered_layout_data* data;
|
||||
|
||||
if (vgmstream->layout_type != layout_layered)
|
||||
return 0;
|
||||
|
||||
data = vgmstream->layout_data;
|
||||
|
||||
max = 0;
|
||||
for (i = 0; i < data->layer_count; i++) {
|
||||
int output_channels = 0;
|
||||
|
||||
mixing_info(data->layers[i], NULL, &output_channels);
|
||||
|
||||
if (max < output_channels)
|
||||
max = output_channels;
|
||||
}
|
||||
|
||||
return max;
|
||||
}
|
||||
|
||||
static int is_layered_auto(VGMSTREAM* vgmstream, int max, char mode) {
|
||||
int i;
|
||||
mixing_data *data = vgmstream->mixing_data;
|
||||
layered_layout_data* l_data;
|
||||
|
||||
|
||||
if (vgmstream->layout_type != layout_layered)
|
||||
return 0;
|
||||
|
||||
/* no channels set and only vocals for now */
|
||||
if (max > 0 || mode != MIX_MACRO_VOCALS)
|
||||
return 0;
|
||||
|
||||
/* no channel down/upmixing (cannot guess output) */
|
||||
for (i = 0; i < data->mixing_count; i++) {
|
||||
mix_command_t mix = data->mixing_chain[i].command;
|
||||
if (mix == MIX_UPMIX || mix == MIX_DOWNMIX || mix == MIX_KILLMIX) /*mix == MIX_SWAP || ??? */
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* only previsible cases */
|
||||
l_data = vgmstream->layout_data;
|
||||
for (i = 0; i < l_data->layer_count; i++) {
|
||||
int output_channels = 0;
|
||||
|
||||
mixing_info(l_data->layers[i], NULL, &output_channels);
|
||||
|
||||
if (output_channels > 8)
|
||||
return 0;
|
||||
}
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
/* special layering, where channels are respected (so Ls only go to Ls), also more optimized */
|
||||
static void mixing_macro_layer_auto(VGMSTREAM* vgmstream, int max, char mode) {
|
||||
layered_layout_data* ldata = vgmstream->layout_data;
|
||||
int i, ch;
|
||||
int target_layer = 0, target_chs = 0, ch_max, target_ch = 0, target_silence = 0;
|
||||
int ch_num;
|
||||
|
||||
/* With N layers like: (ch1 ch2) (ch1 ch2 ch3 ch4) (ch1 ch2), output is normally 2+4+2=8ch.
|
||||
* We want to find highest layer (ch1..4) = 4ch, add other channels to it and drop them */
|
||||
|
||||
/* find target "main" channels (will be first most of the time) */
|
||||
ch_num = 0;
|
||||
ch_max = 0;
|
||||
for (i = 0; i < ldata->layer_count; i++) {
|
||||
int layer_chs = 0;
|
||||
|
||||
mixing_info(ldata->layers[i], NULL, &layer_chs);
|
||||
|
||||
if (ch_max < layer_chs || (ch_max == layer_chs && target_silence)) {
|
||||
target_ch = ch_num;
|
||||
target_chs = layer_chs;
|
||||
target_layer = i;
|
||||
ch_max = layer_chs;
|
||||
/* avoid using silence as main if possible for minor optimization */
|
||||
target_silence = (ldata->layers[i]->coding_type == coding_SILENCE);
|
||||
}
|
||||
|
||||
ch_num += layer_chs;
|
||||
}
|
||||
|
||||
/* all silences? */
|
||||
if (!target_chs) {
|
||||
target_ch = 0;
|
||||
target_chs = 0;
|
||||
target_layer = 0;
|
||||
mixing_info(ldata->layers[0], NULL, &target_chs);
|
||||
}
|
||||
|
||||
/* add other channels to target (assumes standard channel mapping to simplify)
|
||||
* most of the time all layers will have same number of channels though */
|
||||
ch_num = 0;
|
||||
for (i = 0; i < ldata->layer_count; i++) {
|
||||
int layer_chs = 0;
|
||||
|
||||
if (target_layer == i) {
|
||||
ch_num += target_chs;
|
||||
continue;
|
||||
}
|
||||
|
||||
mixing_info(ldata->layers[i], NULL, &layer_chs);
|
||||
|
||||
if (ldata->layers[i]->coding_type == coding_SILENCE) {
|
||||
ch_num += layer_chs;
|
||||
continue; /* unlikely but sometimes in Wwise */
|
||||
}
|
||||
|
||||
if (layer_chs == target_chs) {
|
||||
/* 1:1 mapping */
|
||||
for (ch = 0; ch < layer_chs; ch++) {
|
||||
mixing_push_add(vgmstream, target_ch + ch, ch_num + ch, 1.0);
|
||||
}
|
||||
}
|
||||
else {
|
||||
const double vol_sqrt = 1 / sqrt(2);
|
||||
|
||||
/* extra mixing for better sound in some cases (assumes layer_chs is lower than target_chs) */
|
||||
switch(layer_chs) {
|
||||
case 1:
|
||||
mixing_push_add(vgmstream, target_ch + 0, ch_num + 0, vol_sqrt);
|
||||
mixing_push_add(vgmstream, target_ch + 1, ch_num + 0, vol_sqrt);
|
||||
break;
|
||||
case 2:
|
||||
mixing_push_add(vgmstream, target_ch + 0, ch_num + 0, 1.0);
|
||||
mixing_push_add(vgmstream, target_ch + 1, ch_num + 1, 1.0);
|
||||
break;
|
||||
default: /* less common */
|
||||
//TODO add other mixes, depends on target_chs + mapping (ex. 4.0 to 5.0 != 5.1, 2.1 xiph to 5.1 != 5.1 xiph)
|
||||
for (ch = 0; ch < layer_chs; ch++) {
|
||||
mixing_push_add(vgmstream, target_ch + ch, ch_num + ch, 1.0);
|
||||
}
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
ch_num += layer_chs;
|
||||
}
|
||||
|
||||
/* drop non-target channels */
|
||||
ch_num = 0;
|
||||
for (i = 0; i < ldata->layer_count; i++) {
|
||||
|
||||
if (i < target_layer) { /* least common, hopefully (slower to drop chs 1 by 1) */
|
||||
int layer_chs = 0;
|
||||
mixing_info(ldata->layers[i], NULL, &layer_chs);
|
||||
|
||||
for (ch = 0; ch < layer_chs; ch++) {
|
||||
mixing_push_downmix(vgmstream, ch_num); //+ ch
|
||||
}
|
||||
|
||||
//ch_num += layer_chs; /* dropped channels change this */
|
||||
}
|
||||
else if (i == target_layer) {
|
||||
ch_num += target_chs;
|
||||
}
|
||||
else { /* most common, hopefully (faster) */
|
||||
mixing_push_killmix(vgmstream, ch_num);
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
void mixing_macro_layer(VGMSTREAM* vgmstream, int max, uint32_t mask, char mode) {
|
||||
mixing_data *data = vgmstream->mixing_data;
|
||||
int current, ch, output_channels, selected_channels;
|
||||
|
||||
if (!data)
|
||||
return;
|
||||
|
||||
if (is_layered_auto(vgmstream, max, mode)) {
|
||||
//;VGM_LOG("MIX: auto layer mode\n");
|
||||
mixing_macro_layer_auto(vgmstream, max, mode);
|
||||
return;
|
||||
}
|
||||
//;VGM_LOG("MIX: regular layer mode\n");
|
||||
|
||||
if (max == 0) /* auto calculate */
|
||||
max = get_layered_max_channels(vgmstream);
|
||||
|
||||
if (max <= 0 || data->output_channels <= max)
|
||||
return;
|
||||
|
||||
/* set all channels (non-existant channels will be ignored) */
|
||||
if (mask == 0) {
|
||||
mask = ~mask;
|
||||
}
|
||||
|
||||
/* save before adding fake channels */
|
||||
output_channels = data->output_channels;
|
||||
|
||||
/* count possibly set channels */
|
||||
selected_channels = 0;
|
||||
for (ch = 0; ch < output_channels; ch++) {
|
||||
selected_channels += (mask >> ch) & 1;
|
||||
}
|
||||
|
||||
/* make N fake channels at the beginning for easier calcs */
|
||||
for (ch = 0; ch < max; ch++) {
|
||||
mixing_push_upmix(vgmstream, 0);
|
||||
}
|
||||
|
||||
/* add all layers in this order: ch0: 0, 0+N, 0+N*2 ... / ch1: 1, 1+N ... */
|
||||
current = 0;
|
||||
for (ch = 0; ch < output_channels; ch++) {
|
||||
double volume = 1.0;
|
||||
|
||||
if (!((mask >> ch) & 1))
|
||||
continue;
|
||||
|
||||
/* MIX_MACRO_VOCALS: same volume for all layers (for layered vocals) */
|
||||
/* MIX_MACRO_EQUAL: volume adjusted equally for all layers (for generic downmixing) */
|
||||
/* MIX_MACRO_BGM: volume adjusted depending on layers (for layered bgm) */
|
||||
if (mode == MIX_MACRO_BGM && ch < max) {
|
||||
/* reduce a bit main channels (see below) */
|
||||
int channel_mixes = selected_channels / max;
|
||||
if (current < selected_channels % (channel_mixes * max)) /* may be simplified? */
|
||||
channel_mixes += 1;
|
||||
channel_mixes -= 1; /* better formula? */
|
||||
if (channel_mixes <= 0) /* ??? */
|
||||
channel_mixes = 1;
|
||||
|
||||
volume = 1 / sqrt(channel_mixes);
|
||||
}
|
||||
if ((mode == MIX_MACRO_BGM && ch >= max) || (mode == MIX_MACRO_EQUAL)) {
|
||||
/* find how many will be mixed in current channel (earlier channels receive more
|
||||
* mixes than later ones, ex: selected 8ch + max 3ch: ch0=0+3+6, ch1=1+4+7, ch2=2+5) */
|
||||
int channel_mixes = selected_channels / max;
|
||||
if (channel_mixes <= 0) /* ??? */
|
||||
channel_mixes = 1;
|
||||
if (current < selected_channels % (channel_mixes * max)) /* may be simplified? */
|
||||
channel_mixes += 1;
|
||||
|
||||
volume = 1 / sqrt(channel_mixes); /* "power" add */
|
||||
}
|
||||
//;VGM_LOG("MIX: layer ch=%i, cur=%i, v=%f\n", ch, current, volume);
|
||||
|
||||
mixing_push_add(vgmstream, current, max + ch, volume); /* ch adjusted considering upmixed channels */
|
||||
current++;
|
||||
if (current >= max)
|
||||
current = 0;
|
||||
}
|
||||
|
||||
/* remove all mixed channels */
|
||||
mixing_push_killmix(vgmstream, max);
|
||||
}
|
||||
|
||||
void mixing_macro_crosstrack(VGMSTREAM* vgmstream, int max) {
|
||||
mixing_data *data = vgmstream->mixing_data;
|
||||
int current, ch, track, track_ch, track_num, output_channels;
|
||||
int32_t change_pos, change_next, change_time;
|
||||
|
||||
if (!data)
|
||||
return;
|
||||
if (max <= 0 || data->output_channels <= max)
|
||||
return;
|
||||
if (!vgmstream->loop_flag) /* maybe force loop? */
|
||||
return;
|
||||
|
||||
/* this probably only makes sense for even channels so upmix before if needed) */
|
||||
output_channels = data->output_channels;
|
||||
if (output_channels % 2) {
|
||||
mixing_push_upmix(vgmstream, output_channels);
|
||||
output_channels += 1;
|
||||
}
|
||||
|
||||
/* set loops to hear all track changes */
|
||||
track_num = output_channels / max;
|
||||
if (vgmstream->config.loop_count < track_num) {
|
||||
vgmstream->config.loop_count = track_num;
|
||||
vgmstream->config.loop_count_set = 1;
|
||||
vgmstream->config.config_set = 1;
|
||||
}
|
||||
|
||||
ch = 0;
|
||||
for (track = 0; track < track_num; track++) {
|
||||
double volume = 1.0; /* won't play at the same time, no volume change needed */
|
||||
|
||||
int loop_pre = vgmstream->loop_start_sample;
|
||||
int loop_samples = vgmstream->loop_end_sample - vgmstream->loop_start_sample;
|
||||
change_pos = loop_pre + loop_samples * track;
|
||||
change_next = loop_pre + loop_samples * (track + 1);
|
||||
change_time = 15.0 * vgmstream->sample_rate; /* in secs */
|
||||
|
||||
for (track_ch = 0; track_ch < max; track_ch++) {
|
||||
if (track > 0) { /* fade-in when prev track fades-out */
|
||||
mixing_push_fade(vgmstream, ch + track_ch, 0.0, volume, '(', -1, change_pos, change_pos + change_time, -1);
|
||||
}
|
||||
|
||||
if (track + 1 < track_num) { /* fade-out when next track fades-in */
|
||||
mixing_push_fade(vgmstream, ch + track_ch, volume, 0.0, ')', -1, change_next, change_next + change_time, -1);
|
||||
}
|
||||
}
|
||||
|
||||
ch += max;
|
||||
}
|
||||
|
||||
/* mix all tracks into first */
|
||||
current = 0;
|
||||
for (ch = max; ch < output_channels; ch++) {
|
||||
mixing_push_add(vgmstream, current, ch, 1.0); /* won't play at the same time, no volume change needed */
|
||||
|
||||
current++;
|
||||
if (current >= max)
|
||||
current = 0;
|
||||
}
|
||||
|
||||
/* remove unneeded channels */
|
||||
mixing_push_killmix(vgmstream, max);
|
||||
}
|
||||
|
||||
void mixing_macro_crosslayer(VGMSTREAM* vgmstream, int max, char mode) {
|
||||
mixing_data *data = vgmstream->mixing_data;
|
||||
int current, ch, layer, layer_ch, layer_num, loop, output_channels;
|
||||
int32_t change_pos, change_time;
|
||||
|
||||
if (!data)
|
||||
return;
|
||||
if (max <= 0 || data->output_channels <= max)
|
||||
return;
|
||||
if (!vgmstream->loop_flag) /* maybe force loop? */
|
||||
return;
|
||||
|
||||
/* this probably only makes sense for even channels so upmix before if needed) */
|
||||
output_channels = data->output_channels;
|
||||
if (output_channels % 2) {
|
||||
mixing_push_upmix(vgmstream, output_channels);
|
||||
output_channels += 1;
|
||||
}
|
||||
|
||||
/* set loops to hear all track changes */
|
||||
layer_num = output_channels / max;
|
||||
if (vgmstream->config.loop_count < layer_num) {
|
||||
vgmstream->config.loop_count = layer_num;
|
||||
vgmstream->config.loop_count_set = 1;
|
||||
vgmstream->config.config_set = 1;
|
||||
}
|
||||
|
||||
/* MIX_MACRO_VOCALS: constant volume
|
||||
* MIX_MACRO_EQUAL: sets fades to successively lower/equalize volume per loop for each layer
|
||||
* (to keep final volume constant-ish), ex. 3 layers/loops, 2 max:
|
||||
* - layer0 (ch0+1): loop0 --[1.0]--, loop1 )=1.0..0.7, loop2 )=0.7..0.5, loop3 --[0.5/end]--
|
||||
* - layer1 (ch2+3): loop0 --[0.0]--, loop1 (=0.0..0.7, loop2 )=0.7..0.5, loop3 --[0.5/end]--
|
||||
* - layer2 (ch4+5): loop0 --[0.0]--, loop1 ---[0.0]--, loop2 (=0.0..0.5, loop3 --[0.5/end]--
|
||||
* MIX_MACRO_BGM: similar but 1st layer (main) has higher/delayed volume:
|
||||
* - layer0 (ch0+1): loop0 --[1.0]--, loop1 )=1.0..1.0, loop2 )=1.0..0.7, loop3 --[0.7/end]--
|
||||
*/
|
||||
for (loop = 1; loop < layer_num; loop++) {
|
||||
double volume1 = 1.0;
|
||||
double volume2 = 1.0;
|
||||
|
||||
int loop_pre = vgmstream->loop_start_sample;
|
||||
int loop_samples = vgmstream->loop_end_sample - vgmstream->loop_start_sample;
|
||||
change_pos = loop_pre + loop_samples * loop;
|
||||
change_time = 10.0 * vgmstream->sample_rate; /* in secs */
|
||||
|
||||
if (mode == MIX_MACRO_EQUAL) {
|
||||
volume1 = 1 / sqrt(loop + 0);
|
||||
volume2 = 1 / sqrt(loop + 1);
|
||||
}
|
||||
|
||||
ch = 0;
|
||||
for (layer = 0; layer < layer_num; layer++) {
|
||||
char type;
|
||||
|
||||
if (mode == MIX_MACRO_BGM) {
|
||||
if (layer == 0) {
|
||||
volume1 = 1 / sqrt(loop - 1 <= 0 ? 1 : loop - 1);
|
||||
volume2 = 1 / sqrt(loop + 0);
|
||||
}
|
||||
else {
|
||||
volume1 = 1 / sqrt(loop + 0);
|
||||
volume2 = 1 / sqrt(loop + 1);
|
||||
}
|
||||
}
|
||||
|
||||
if (layer > loop) { /* not playing yet (volume is implicitly 0.0 from first fade in) */
|
||||
continue;
|
||||
} else if (layer == loop) { /* fades in for the first time */
|
||||
volume1 = 0.0;
|
||||
type = '(';
|
||||
} else { /* otherwise fades out to match other layers's volume */
|
||||
type = ')';
|
||||
}
|
||||
|
||||
//;VGM_LOG("MIX: loop=%i, layer %i, vol1=%f, vol2=%f\n", loop, layer, volume1, volume2);
|
||||
|
||||
for (layer_ch = 0; layer_ch < max; layer_ch++) {
|
||||
mixing_push_fade(vgmstream, ch + layer_ch, volume1, volume2, type, -1, change_pos, change_pos + change_time, -1);
|
||||
}
|
||||
|
||||
ch += max;
|
||||
}
|
||||
}
|
||||
|
||||
/* mix all tracks into first */
|
||||
current = 0;
|
||||
for (ch = max; ch < output_channels; ch++) {
|
||||
mixing_push_add(vgmstream, current, ch, 1.0);
|
||||
|
||||
current++;
|
||||
if (current >= max)
|
||||
current = 0;
|
||||
}
|
||||
|
||||
/* remove unneeded channels */
|
||||
mixing_push_killmix(vgmstream, max);
|
||||
}
|
||||
|
||||
|
||||
typedef enum {
|
||||
pos_FL = 0,
|
||||
pos_FR = 1,
|
||||
pos_FC = 2,
|
||||
pos_LFE = 3,
|
||||
pos_BL = 4,
|
||||
pos_BR = 5,
|
||||
pos_FLC = 6,
|
||||
pos_FRC = 7,
|
||||
pos_BC = 8,
|
||||
pos_SL = 9,
|
||||
pos_SR = 10,
|
||||
} mixing_position_t;
|
||||
|
||||
void mixing_macro_downmix(VGMSTREAM* vgmstream, int max /*, mapping_t output_mapping*/) {
|
||||
mixing_data *data = vgmstream->mixing_data;
|
||||
int ch, output_channels, mp_in, mp_out, ch_in, ch_out;
|
||||
channel_mapping_t input_mapping, output_mapping;
|
||||
const double vol_max = 1.0;
|
||||
const double vol_sqrt = 1 / sqrt(2);
|
||||
const double vol_half = 1 / 2;
|
||||
double matrix[16][16] = {{0}};
|
||||
|
||||
|
||||
if (!data)
|
||||
return;
|
||||
if (max <= 1 || data->output_channels <= max || max >= 8)
|
||||
return;
|
||||
|
||||
/* assume WAV defaults if not set */
|
||||
input_mapping = vgmstream->channel_layout;
|
||||
if (input_mapping == 0) {
|
||||
switch(data->output_channels) {
|
||||
case 1: input_mapping = mapping_MONO; break;
|
||||
case 2: input_mapping = mapping_STEREO; break;
|
||||
case 3: input_mapping = mapping_2POINT1; break;
|
||||
case 4: input_mapping = mapping_QUAD; break;
|
||||
case 5: input_mapping = mapping_5POINT0; break;
|
||||
case 6: input_mapping = mapping_5POINT1; break;
|
||||
case 7: input_mapping = mapping_7POINT0; break;
|
||||
case 8: input_mapping = mapping_7POINT1; break;
|
||||
default: return;
|
||||
}
|
||||
}
|
||||
|
||||
/* build mapping matrix[input channel][output channel] = volume,
|
||||
* using standard WAV/AC3 downmix formulas
|
||||
* - https://www.audiokinetic.com/library/edge/?source=Help&id=downmix_tables
|
||||
* - https://www.audiokinetic.com/library/edge/?source=Help&id=standard_configurations
|
||||
*/
|
||||
switch(max) {
|
||||
case 1:
|
||||
output_mapping = mapping_MONO;
|
||||
matrix[pos_FL][pos_FC] = vol_sqrt;
|
||||
matrix[pos_FR][pos_FC] = vol_sqrt;
|
||||
matrix[pos_FC][pos_FC] = vol_max;
|
||||
matrix[pos_SL][pos_FC] = vol_half;
|
||||
matrix[pos_SR][pos_FC] = vol_half;
|
||||
matrix[pos_BL][pos_FC] = vol_half;
|
||||
matrix[pos_BR][pos_FC] = vol_half;
|
||||
break;
|
||||
case 2:
|
||||
output_mapping = mapping_STEREO;
|
||||
matrix[pos_FL][pos_FL] = vol_max;
|
||||
matrix[pos_FR][pos_FR] = vol_max;
|
||||
matrix[pos_FC][pos_FL] = vol_sqrt;
|
||||
matrix[pos_FC][pos_FR] = vol_sqrt;
|
||||
matrix[pos_SL][pos_FL] = vol_sqrt;
|
||||
matrix[pos_SR][pos_FR] = vol_sqrt;
|
||||
matrix[pos_BL][pos_FL] = vol_sqrt;
|
||||
matrix[pos_BR][pos_FR] = vol_sqrt;
|
||||
break;
|
||||
default:
|
||||
/* not sure if +3ch would use FC/LFE, SL/BR and whatnot without passing extra config, so ignore for now */
|
||||
return;
|
||||
}
|
||||
|
||||
/* save and make N fake channels at the beginning for easier calcs */
|
||||
output_channels = data->output_channels;
|
||||
for (ch = 0; ch < max; ch++) {
|
||||
mixing_push_upmix(vgmstream, 0);
|
||||
}
|
||||
|
||||
/* downmix */
|
||||
ch_in = 0;
|
||||
for (mp_in = 0; mp_in < 16; mp_in++) {
|
||||
/* read input mapping (ex. 5.1) and find channel */
|
||||
if (!(input_mapping & (1<<mp_in)))
|
||||
continue;
|
||||
|
||||
ch_out = 0;
|
||||
for (mp_out = 0; mp_out < 16; mp_out++) {
|
||||
/* read output mapping (ex. 2.0) and find channel */
|
||||
if (!(output_mapping & (1<<mp_out)))
|
||||
continue;
|
||||
mixing_push_add(vgmstream, ch_out, max + ch_in, matrix[mp_in][mp_out]);
|
||||
|
||||
ch_out++;
|
||||
if (ch_out > max)
|
||||
break;
|
||||
}
|
||||
|
||||
ch_in++;
|
||||
if (ch_in >= output_channels)
|
||||
break;
|
||||
}
|
||||
|
||||
/* remove unneeded channels */
|
||||
mixing_push_killmix(vgmstream, max);
|
||||
}
|
52
src/base/mixing_priv.h
Normal file
52
src/base/mixing_priv.h
Normal file
@ -0,0 +1,52 @@
|
||||
#ifndef _MIXING_PRIV_H_
|
||||
#define _MIXING_PRIV_H_
|
||||
|
||||
#include "../vgmstream.h"
|
||||
#define VGMSTREAM_MAX_MIXING 512
|
||||
|
||||
/* mixing info */
|
||||
typedef enum {
|
||||
MIX_SWAP,
|
||||
MIX_ADD,
|
||||
MIX_ADD_COPY,
|
||||
MIX_VOLUME,
|
||||
MIX_LIMIT,
|
||||
MIX_UPMIX,
|
||||
MIX_DOWNMIX,
|
||||
MIX_KILLMIX,
|
||||
MIX_FADE
|
||||
} mix_command_t;
|
||||
|
||||
typedef struct {
|
||||
mix_command_t command;
|
||||
/* common */
|
||||
int ch_dst;
|
||||
int ch_src;
|
||||
float vol;
|
||||
|
||||
/* fade envelope */
|
||||
float vol_start; /* volume from pre to start */
|
||||
float vol_end; /* volume from end to post */
|
||||
char shape; /* curve type */
|
||||
int32_t time_pre; /* position before time_start where vol_start applies (-1 = beginning) */
|
||||
int32_t time_start; /* fade start position where vol changes from vol_start to vol_end */
|
||||
int32_t time_end; /* fade end position where vol changes from vol_start to vol_end */
|
||||
int32_t time_post; /* position after time_end where vol_end applies (-1 = end) */
|
||||
} mix_command_data;
|
||||
|
||||
typedef struct {
|
||||
int mixing_channels; /* max channels needed to mix */
|
||||
int output_channels; /* resulting channels after mixing */
|
||||
int mixing_on; /* mixing allowed */
|
||||
int mixing_count; /* mixing number */
|
||||
size_t mixing_size; /* mixing max */
|
||||
mix_command_data mixing_chain[VGMSTREAM_MAX_MIXING]; /* effects to apply (could be alloc'ed but to simplify...) */
|
||||
float* mixbuf; /* internal mixing buffer */
|
||||
|
||||
/* fades only apply at some points, other mixes are active */
|
||||
int has_non_fade;
|
||||
int has_fade;
|
||||
} mixing_data;
|
||||
|
||||
|
||||
#endif
|
@ -88,6 +88,8 @@
|
||||
<ClInclude Include="vgmstream_types.h" />
|
||||
<ClInclude Include="base\decode.h" />
|
||||
<ClInclude Include="base\mixing.h" />
|
||||
<ClInclude Include="base\mixing_fades.h" />
|
||||
<ClInclude Include="base\mixing_priv.h" />
|
||||
<ClInclude Include="base\plugins.h" />
|
||||
<ClInclude Include="base\render.h" />
|
||||
<ClInclude Include="coding\acm_decoder_libacm.h" />
|
||||
@ -197,6 +199,8 @@
|
||||
<ClCompile Include="base\decode.c" />
|
||||
<ClCompile Include="base\info.c" />
|
||||
<ClCompile Include="base\mixing.c" />
|
||||
<ClCompile Include="base\mixing_commands.c" />
|
||||
<ClCompile Include="base\mixing_macros.c" />
|
||||
<ClCompile Include="base\plugins.c" />
|
||||
<ClCompile Include="base\render.c" />
|
||||
<ClCompile Include="base\seek.c" />
|
||||
|
@ -89,6 +89,12 @@
|
||||
<ClInclude Include="base\mixing.h">
|
||||
<Filter>base\Header Files</Filter>
|
||||
</ClInclude>
|
||||
<ClInclude Include="base\mixing_fades.h">
|
||||
<Filter>base\Header Files</Filter>
|
||||
</ClInclude>
|
||||
<ClInclude Include="base\mixing_priv.h">
|
||||
<Filter>base\Header Files</Filter>
|
||||
</ClInclude>
|
||||
<ClInclude Include="base\plugins.h">
|
||||
<Filter>base\Header Files</Filter>
|
||||
</ClInclude>
|
||||
@ -412,6 +418,12 @@
|
||||
<ClCompile Include="base\mixing.c">
|
||||
<Filter>base\Source Files</Filter>
|
||||
</ClCompile>
|
||||
<ClCompile Include="base\mixing_commands.c">
|
||||
<Filter>base\Source Files</Filter>
|
||||
</ClCompile>
|
||||
<ClCompile Include="base\mixing_macros.c">
|
||||
<Filter>base\Source Files</Filter>
|
||||
</ClCompile>
|
||||
<ClCompile Include="base\plugins.c">
|
||||
<Filter>base\Source Files</Filter>
|
||||
</ClCompile>
|
||||
|
Loading…
Reference in New Issue
Block a user