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-rw-r--r--src/pcm_resample_libsamplerate.c312
1 files changed, 0 insertions, 312 deletions
diff --git a/src/pcm_resample_libsamplerate.c b/src/pcm_resample_libsamplerate.c
deleted file mode 100644
index f957e515..00000000
--- a/src/pcm_resample_libsamplerate.c
+++ /dev/null
@@ -1,312 +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_resample_internal.h"
-#include "conf.h"
-
-#include <glib.h>
-
-#include <assert.h>
-#include <stdlib.h>
-#include <string.h>
-
-#undef G_LOG_DOMAIN
-#define G_LOG_DOMAIN "pcm"
-
-static int lsr_converter = SRC_SINC_FASTEST;
-
-static inline GQuark
-libsamplerate_quark(void)
-{
- return g_quark_from_static_string("libsamplerate");
-}
-
-static bool
-lsr_parse_converter(const char *s)
-{
- assert(s != NULL);
-
- if (*s == 0)
- return true;
-
- char *endptr;
- long l = strtol(s, &endptr, 10);
- if (*endptr == 0 && src_get_name(l) != NULL) {
- lsr_converter = l;
- return true;
- }
-
- size_t length = strlen(s);
- for (int i = 0;; ++i) {
- const char *name = src_get_name(i);
- if (name == NULL)
- break;
-
- if (g_ascii_strncasecmp(s, name, length) == 0) {
- lsr_converter = i;
- return true;
- }
- }
-
- return false;
-}
-
-bool
-pcm_resample_lsr_global_init(const char *converter, GError **error_r)
-{
- if (!lsr_parse_converter(converter)) {
- g_set_error(error_r, libsamplerate_quark(), 0,
- "unknown samplerate converter '%s'", converter);
- return false;
- }
-
- g_debug("libsamplerate converter '%s'",
- src_get_name(lsr_converter));
-
- return true;
-}
-
-void
-pcm_resample_lsr_init(struct pcm_resample_state *state)
-{
- memset(state, 0, sizeof(*state));
-
- pcm_buffer_init(&state->in);
- pcm_buffer_init(&state->out);
- pcm_buffer_init(&state->buffer);
-}
-
-void
-pcm_resample_lsr_deinit(struct pcm_resample_state *state)
-{
- if (state->state != NULL)
- state->state = src_delete(state->state);
-
- pcm_buffer_deinit(&state->in);
- pcm_buffer_deinit(&state->out);
- pcm_buffer_deinit(&state->buffer);
-}
-
-void
-pcm_resample_lsr_reset(struct pcm_resample_state *state)
-{
- if (state->state != NULL)
- src_reset(state->state);
-}
-
-static bool
-pcm_resample_set(struct pcm_resample_state *state,
- unsigned channels, unsigned src_rate, unsigned dest_rate,
- GError **error_r)
-{
- int error;
- SRC_DATA *data = &state->data;
-
- /* (re)set the state/ratio if the in or out format changed */
- if (channels == state->prev.channels &&
- src_rate == state->prev.src_rate &&
- dest_rate == state->prev.dest_rate)
- return true;
-
- state->error = 0;
- state->prev.channels = channels;
- state->prev.src_rate = src_rate;
- state->prev.dest_rate = dest_rate;
-
- if (state->state)
- state->state = src_delete(state->state);
-
- state->state = src_new(lsr_converter, channels, &error);
- if (!state->state) {
- g_set_error(error_r, libsamplerate_quark(), state->error,
- "libsamplerate initialization has failed: %s",
- src_strerror(error));
- return false;
- }
-
- data->src_ratio = (double)dest_rate / (double)src_rate;
- g_debug("setting samplerate conversion ratio to %.2lf",
- data->src_ratio);
- src_set_ratio(state->state, data->src_ratio);
-
- return true;
-}
-
-static bool
-lsr_process(struct pcm_resample_state *state, GError **error_r)
-{
- if (state->error == 0)
- state->error = src_process(state->state, &state->data);
- if (state->error) {
- g_set_error(error_r, libsamplerate_quark(), state->error,
- "libsamplerate has failed: %s",
- src_strerror(state->error));
- return false;
- }
-
- return true;
-}
-
-static float *
-deconst_float_buffer(const float *in)
-{
- union {
- const float *in;
- float *out;
- } u = { .in = in };
- return u.out;
-}
-
-const float *
-pcm_resample_lsr_float(struct pcm_resample_state *state,
- unsigned channels,
- unsigned src_rate,
- const float *src_buffer, size_t src_size,
- unsigned dest_rate, size_t *dest_size_r,
- GError **error_r)
-{
- assert((src_size % (sizeof(*src_buffer) * channels)) == 0);
-
- if (!pcm_resample_set(state, channels, src_rate, dest_rate, error_r))
- return NULL;
-
- SRC_DATA *data = &state->data;
- data->input_frames = src_size / sizeof(*src_buffer) / channels;
- data->data_in = deconst_float_buffer(src_buffer);
-
- data->output_frames = (src_size * dest_rate + src_rate - 1) / src_rate;
- size_t data_out_size = data->output_frames * sizeof(float) * channels;
- data->data_out = pcm_buffer_get(&state->out, data_out_size);
-
- if (!lsr_process(state, error_r))
- return NULL;
-
- *dest_size_r = data->output_frames_gen *
- sizeof(*data->data_out) * channels;
- return data->data_out;
-}
-
-const int16_t *
-pcm_resample_lsr_16(struct pcm_resample_state *state,
- unsigned channels,
- unsigned src_rate,
- const int16_t *src_buffer, size_t src_size,
- unsigned dest_rate, size_t *dest_size_r,
- GError **error_r)
-{
- bool success;
- SRC_DATA *data = &state->data;
- size_t data_in_size;
- size_t data_out_size;
- int16_t *dest_buffer;
-
- assert((src_size % (sizeof(*src_buffer) * channels)) == 0);
-
- success = pcm_resample_set(state, channels, src_rate, dest_rate,
- error_r);
- if (!success)
- return NULL;
-
- data->input_frames = src_size / sizeof(*src_buffer) / channels;
- data_in_size = data->input_frames * sizeof(float) * channels;
- data->data_in = pcm_buffer_get(&state->in, data_in_size);
-
- data->output_frames = (src_size * dest_rate + src_rate - 1) / src_rate;
- data_out_size = data->output_frames * sizeof(float) * channels;
- data->data_out = pcm_buffer_get(&state->out, data_out_size);
-
- src_short_to_float_array(src_buffer, data->data_in,
- data->input_frames * channels);
-
- if (!lsr_process(state, error_r))
- return NULL;
-
- *dest_size_r = data->output_frames_gen *
- sizeof(*dest_buffer) * channels;
- dest_buffer = pcm_buffer_get(&state->buffer, *dest_size_r);
- src_float_to_short_array(data->data_out, dest_buffer,
- data->output_frames_gen * channels);
-
- return dest_buffer;
-}
-
-#ifdef HAVE_LIBSAMPLERATE_NOINT
-
-/* libsamplerate introduced these functions in v0.1.3 */
-
-static void
-src_int_to_float_array(const int *in, float *out, int len)
-{
- while (len-- > 0)
- *out++ = *in++ / (float)(1 << (24 - 1));
-}
-
-static void
-src_float_to_int_array (const float *in, int *out, int len)
-{
- while (len-- > 0)
- *out++ = *in++ * (float)(1 << (24 - 1));
-}
-
-#endif
-
-const int32_t *
-pcm_resample_lsr_32(struct pcm_resample_state *state,
- unsigned channels,
- unsigned src_rate,
- const int32_t *src_buffer, size_t src_size,
- unsigned dest_rate, size_t *dest_size_r,
- GError **error_r)
-{
- bool success;
- SRC_DATA *data = &state->data;
- size_t data_in_size;
- size_t data_out_size;
- int32_t *dest_buffer;
-
- assert((src_size % (sizeof(*src_buffer) * channels)) == 0);
-
- success = pcm_resample_set(state, channels, src_rate, dest_rate,
- error_r);
- if (!success)
- return NULL;
-
- data->input_frames = src_size / sizeof(*src_buffer) / channels;
- data_in_size = data->input_frames * sizeof(float) * channels;
- data->data_in = pcm_buffer_get(&state->in, data_in_size);
-
- data->output_frames = (src_size * dest_rate + src_rate - 1) / src_rate;
- data_out_size = data->output_frames * sizeof(float) * channels;
- data->data_out = pcm_buffer_get(&state->out, data_out_size);
-
- src_int_to_float_array(src_buffer, data->data_in,
- data->input_frames * channels);
-
- if (!lsr_process(state, error_r))
- return NULL;
-
- *dest_size_r = data->output_frames_gen *
- sizeof(*dest_buffer) * channels;
- dest_buffer = pcm_buffer_get(&state->buffer, *dest_size_r);
- src_float_to_int_array(data->data_out, dest_buffer,
- data->output_frames_gen * channels);
-
- return dest_buffer;
-}
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