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-rw-r--r--src/Makefile.am2
-rw-r--r--src/crossfade.c2
-rw-r--r--src/pcm_mix.c118
-rw-r--r--src/pcm_mix.h30
-rw-r--r--src/pcm_utils.c89
-rw-r--r--src/pcm_utils.h3
6 files changed, 151 insertions, 93 deletions
diff --git a/src/Makefile.am b/src/Makefile.am
index 2c2b14665..c5259b155 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -51,6 +51,7 @@ mpd_headers = \
mapper.h \
pcm_utils.h \
pcm_volume.h \
+ pcm_mix.h \
pcm_channels.h \
pcm_resample.h \
pcm_dither.h \
@@ -131,6 +132,7 @@ mpd_SOURCES = \
mapper.c \
pcm_utils.c \
pcm_volume.c \
+ pcm_mix.c \
pcm_channels.c \
pcm_resample.c \
pcm_dither.c \
diff --git a/src/crossfade.c b/src/crossfade.c
index ac2461689..a21b05fa2 100644
--- a/src/crossfade.c
+++ b/src/crossfade.c
@@ -19,7 +19,7 @@
#include "crossfade.h"
#include "audio.h"
-#include "pcm_utils.h"
+#include "pcm_mix.h"
#include "pipe.h"
#include "audio_format.h"
#include "tag.h"
diff --git a/src/pcm_mix.c b/src/pcm_mix.c
new file mode 100644
index 000000000..208805831
--- /dev/null
+++ b/src/pcm_mix.c
@@ -0,0 +1,118 @@
+/*
+ * Copyright (C) 2003-2009 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#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_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_dither() + PCM_VOLUME_1 / 2) / PCM_VOLUME_1;
+
+ *buffer1++ = pcm_range(sample1, 8);
+ --num_samples;
+ }
+}
+
+static void
+pcm_add_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_dither() + PCM_VOLUME_1 / 2) / PCM_VOLUME_1;
+
+ *buffer1++ = pcm_range(sample1, 16);
+ --num_samples;
+ }
+}
+
+static void
+pcm_add_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_dither() + PCM_VOLUME_1 / 2) / PCM_VOLUME_1;
+
+ *buffer1++ = pcm_range(sample1, 24);
+ --num_samples;
+ }
+}
+
+static void
+pcm_add(char *buffer1, const char *buffer2, size_t size,
+ int vol1, int vol2,
+ const struct audio_format *format)
+{
+ switch (format->bits) {
+ case 8:
+ pcm_add_8((int8_t *)buffer1, (const int8_t *)buffer2,
+ size, vol1, vol2);
+ break;
+
+ case 16:
+ pcm_add_16((int16_t *)buffer1, (const int16_t *)buffer2,
+ size / 2, vol1, vol2);
+ break;
+
+ case 24:
+ pcm_add_24((int32_t*)buffer1,
+ (const int32_t*)buffer2,
+ size / 4, vol1, vol2);
+ break;
+
+ default:
+ g_error("%u bits not supported by pcm_add!\n", format->bits);
+ }
+}
+
+void
+pcm_mix(char *buffer1, const char *buffer2, size_t size,
+ const struct audio_format *format, float portion1)
+{
+ int vol1;
+ float 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);
+
+ pcm_add(buffer1, buffer2, size, vol1, PCM_VOLUME_1 - vol1, format);
+}
diff --git a/src/pcm_mix.h b/src/pcm_mix.h
new file mode 100644
index 000000000..cce35dedf
--- /dev/null
+++ b/src/pcm_mix.h
@@ -0,0 +1,30 @@
+/*
+ * Copyright (C) 2003-2009 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#ifndef PCM_MIX_H
+#define PCM_MIX_H
+
+#include <stddef.h>
+
+struct audio_format;
+
+void
+pcm_mix(char *buffer1, const char *buffer2, size_t size,
+ const struct audio_format *format, float portion1);
+
+#endif
diff --git a/src/pcm_utils.c b/src/pcm_utils.c
index d619c9dd7..fd2786e3a 100644
--- a/src/pcm_utils.c
+++ b/src/pcm_utils.c
@@ -18,8 +18,6 @@
#include "pcm_utils.h"
#include "pcm_channels.h"
-#include "pcm_prng.h"
-#include "pcm_volume.h"
#include "conf.h"
#include "audio_format.h"
@@ -31,93 +29,6 @@
#undef G_LOG_DOMAIN
#define G_LOG_DOMAIN "pcm"
-static void
-pcm_add_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_dither() + PCM_VOLUME_1 / 2) / PCM_VOLUME_1;
-
- *buffer1++ = pcm_range(sample1, 8);
- --num_samples;
- }
-}
-
-static void
-pcm_add_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_dither() + PCM_VOLUME_1 / 2) / PCM_VOLUME_1;
-
- *buffer1++ = pcm_range(sample1, 16);
- --num_samples;
- }
-}
-
-static void
-pcm_add_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_dither() + PCM_VOLUME_1 / 2) / PCM_VOLUME_1;
-
- *buffer1++ = pcm_range(sample1, 24);
- --num_samples;
- }
-}
-
-static void pcm_add(char *buffer1, const char *buffer2, size_t size,
- int vol1, int vol2,
- const struct audio_format *format)
-{
- switch (format->bits) {
- case 8:
- pcm_add_8((int8_t *)buffer1, (const int8_t *)buffer2,
- size, vol1, vol2);
- break;
-
- case 16:
- pcm_add_16((int16_t *)buffer1, (const int16_t *)buffer2,
- size / 2, vol1, vol2);
- break;
-
- case 24:
- pcm_add_24((int32_t*)buffer1,
- (const int32_t*)buffer2,
- size / 4, vol1, vol2);
- break;
-
- default:
- g_error("%u bits not supported by pcm_add!\n", format->bits);
- }
-}
-
-void pcm_mix(char *buffer1, const char *buffer2, size_t size,
- const struct audio_format *format, float portion1)
-{
- int vol1;
- float 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);
-
- pcm_add(buffer1, buffer2, size, vol1, PCM_VOLUME_1 - vol1, format);
-}
-
void pcm_convert_init(struct pcm_convert_state *state)
{
memset(state, 0, sizeof(*state));
diff --git a/src/pcm_utils.h b/src/pcm_utils.h
index 61262048f..5d29420f3 100644
--- a/src/pcm_utils.h
+++ b/src/pcm_utils.h
@@ -52,9 +52,6 @@ pcm_range(int32_t sample, unsigned bits)
return sample;
}
-void pcm_mix(char *buffer1, const char *buffer2, size_t size,
- const struct audio_format *format, float portion1);
-
void pcm_convert_init(struct pcm_convert_state *state);
size_t pcm_convert(const struct audio_format *inFormat,
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-06 05:54:42 +0000