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-rw-r--r--src/pcm_mix.c280
1 files changed, 0 insertions, 280 deletions
diff --git a/src/pcm_mix.c b/src/pcm_mix.c
deleted file mode 100644
index 6c6d1b4ab..000000000
--- a/src/pcm_mix.c
+++ /dev/null
@@ -1,280 +0,0 @@
-/*
- * Copyright (C) 2003-2011 The Music Player Daemon Project
- * http://www.musicpd.org
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- */
-
-#include "config.h"
-#include "pcm_mix.h"
-#include "pcm_volume.h"
-#include "pcm_utils.h"
-#include "audio_format.h"
-
-#include <glib.h>
-
-#include <math.h>
-
-#undef G_LOG_DOMAIN
-#define G_LOG_DOMAIN "pcm"
-
-static void
-pcm_add_vol_8(int8_t *buffer1, const int8_t *buffer2,
- unsigned num_samples, int volume1, int volume2)
-{
- while (num_samples > 0) {
- int32_t sample1 = *buffer1;
- int32_t sample2 = *buffer2++;
-
- sample1 = ((sample1 * volume1 + sample2 * volume2) +
- pcm_volume_dither() + PCM_VOLUME_1 / 2)
- / PCM_VOLUME_1;
-
- *buffer1++ = pcm_range(sample1, 8);
- --num_samples;
- }
-}
-
-static void
-pcm_add_vol_16(int16_t *buffer1, const int16_t *buffer2,
- unsigned num_samples, int volume1, int volume2)
-{
- while (num_samples > 0) {
- int32_t sample1 = *buffer1;
- int32_t sample2 = *buffer2++;
-
- sample1 = ((sample1 * volume1 + sample2 * volume2) +
- pcm_volume_dither() + PCM_VOLUME_1 / 2)
- / PCM_VOLUME_1;
-
- *buffer1++ = pcm_range(sample1, 16);
- --num_samples;
- }
-}
-
-static void
-pcm_add_vol_24(int32_t *buffer1, const int32_t *buffer2,
- unsigned num_samples, unsigned volume1, unsigned volume2)
-{
- while (num_samples > 0) {
- int64_t sample1 = *buffer1;
- int64_t sample2 = *buffer2++;
-
- sample1 = ((sample1 * volume1 + sample2 * volume2) +
- pcm_volume_dither() + PCM_VOLUME_1 / 2)
- / PCM_VOLUME_1;
-
- *buffer1++ = pcm_range(sample1, 24);
- --num_samples;
- }
-}
-
-static void
-pcm_add_vol_32(int32_t *buffer1, const int32_t *buffer2,
- unsigned num_samples, unsigned volume1, unsigned volume2)
-{
- while (num_samples > 0) {
- int64_t sample1 = *buffer1;
- int64_t sample2 = *buffer2++;
-
- sample1 = ((sample1 * volume1 + sample2 * volume2) +
- pcm_volume_dither() + PCM_VOLUME_1 / 2)
- / PCM_VOLUME_1;
-
- *buffer1++ = pcm_range_64(sample1, 32);
- --num_samples;
- }
-}
-
-static void
-pcm_add_vol_float(float *buffer1, const float *buffer2,
- unsigned num_samples, float volume1, float volume2)
-{
- while (num_samples > 0) {
- float sample1 = *buffer1;
- float sample2 = *buffer2++;
-
- sample1 = (sample1 * volume1 + sample2 * volume2);
- *buffer1++ = sample1;
- --num_samples;
- }
-}
-
-static bool
-pcm_add_vol(void *buffer1, const void *buffer2, size_t size,
- int vol1, int vol2,
- enum sample_format format)
-{
- switch (format) {
- case SAMPLE_FORMAT_UNDEFINED:
- case SAMPLE_FORMAT_DSD:
- /* not implemented */
- return false;
-
- case SAMPLE_FORMAT_S8:
- pcm_add_vol_8((int8_t *)buffer1, (const int8_t *)buffer2,
- size, vol1, vol2);
- return true;
-
- case SAMPLE_FORMAT_S16:
- pcm_add_vol_16((int16_t *)buffer1, (const int16_t *)buffer2,
- size / 2, vol1, vol2);
- return true;
-
- case SAMPLE_FORMAT_S24_P32:
- pcm_add_vol_24((int32_t *)buffer1, (const int32_t *)buffer2,
- size / 4, vol1, vol2);
- return true;
-
- case SAMPLE_FORMAT_S32:
- pcm_add_vol_32((int32_t *)buffer1, (const int32_t *)buffer2,
- size / 4, vol1, vol2);
- return true;
-
- case SAMPLE_FORMAT_FLOAT:
- pcm_add_vol_float(buffer1, buffer2, size / 4,
- pcm_volume_to_float(vol1),
- pcm_volume_to_float(vol2));
- return true;
- }
-
- /* unreachable */
- assert(false);
- return false;
-}
-
-static void
-pcm_add_8(int8_t *buffer1, const int8_t *buffer2, unsigned num_samples)
-{
- while (num_samples > 0) {
- int32_t sample1 = *buffer1;
- int32_t sample2 = *buffer2++;
-
- sample1 += sample2;
-
- *buffer1++ = pcm_range(sample1, 8);
- --num_samples;
- }
-}
-
-static void
-pcm_add_16(int16_t *buffer1, const int16_t *buffer2, unsigned num_samples)
-{
- while (num_samples > 0) {
- int32_t sample1 = *buffer1;
- int32_t sample2 = *buffer2++;
-
- sample1 += sample2;
-
- *buffer1++ = pcm_range(sample1, 16);
- --num_samples;
- }
-}
-
-static void
-pcm_add_24(int32_t *buffer1, const int32_t *buffer2, unsigned num_samples)
-{
- while (num_samples > 0) {
- int64_t sample1 = *buffer1;
- int64_t sample2 = *buffer2++;
-
- sample1 += sample2;
-
- *buffer1++ = pcm_range(sample1, 24);
- --num_samples;
- }
-}
-
-static void
-pcm_add_32(int32_t *buffer1, const int32_t *buffer2, unsigned num_samples)
-{
- while (num_samples > 0) {
- int64_t sample1 = *buffer1;
- int64_t sample2 = *buffer2++;
-
- sample1 += sample2;
-
- *buffer1++ = pcm_range_64(sample1, 32);
- --num_samples;
- }
-}
-
-static void
-pcm_add_float(float *buffer1, const float *buffer2, unsigned num_samples)
-{
- while (num_samples > 0) {
- float sample1 = *buffer1;
- float sample2 = *buffer2++;
- *buffer1++ = sample1 + sample2;
- --num_samples;
- }
-}
-
-static bool
-pcm_add(void *buffer1, const void *buffer2, size_t size,
- enum sample_format format)
-{
- switch (format) {
- case SAMPLE_FORMAT_UNDEFINED:
- case SAMPLE_FORMAT_DSD:
- /* not implemented */
- return false;
-
- case SAMPLE_FORMAT_S8:
- pcm_add_8((int8_t *)buffer1, (const int8_t *)buffer2, size);
- return true;
-
- case SAMPLE_FORMAT_S16:
- pcm_add_16((int16_t *)buffer1, (const int16_t *)buffer2, size / 2);
- return true;
-
- case SAMPLE_FORMAT_S24_P32:
- pcm_add_24((int32_t *)buffer1, (const int32_t *)buffer2, size / 4);
- return true;
-
- case SAMPLE_FORMAT_S32:
- pcm_add_32((int32_t *)buffer1, (const int32_t *)buffer2, size / 4);
- return true;
-
- case SAMPLE_FORMAT_FLOAT:
- pcm_add_float(buffer1, buffer2, size / 4);
- return true;
- }
-
- /* unreachable */
- assert(false);
- return false;
-}
-
-bool
-pcm_mix(void *buffer1, const void *buffer2, size_t size,
- enum sample_format format, float portion1)
-{
- int vol1;
- float s;
-
- /* portion1 is between 0.0 and 1.0 for crossfading, MixRamp uses NaN
- * to signal mixing rather than fading */
- if (isnan(portion1))
- return pcm_add(buffer1, buffer2, size, format);
-
- s = sin(M_PI_2 * portion1);
- s *= s;
-
- vol1 = s * PCM_VOLUME_1 + 0.5;
- vol1 = vol1 > PCM_VOLUME_1 ? PCM_VOLUME_1 : (vol1 < 0 ? 0 : vol1);
-
- return pcm_add_vol(buffer1, buffer2, size, vol1, PCM_VOLUME_1 - vol1, format);
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-23 12:20:34 +0000