gst_plugins_base/gst/audioresample/resample.c
branchRCL_3
changeset 29 567bb019e3e3
parent 6 9b2c3c7a1a9c
child 30 7e817e7e631c
--- a/gst_plugins_base/gst/audioresample/resample.c	Wed Mar 31 22:03:18 2010 +0300
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,395 +0,0 @@
-/* Resampling library
- * Copyright (C) <2001> David A. Schleef <ds@schleef.org>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or any later version.
- *
- * This library 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
- * Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- * Boston, MA 02111-1307, USA.
- */
-
-#ifdef HAVE_CONFIG_H
-#ifndef __SYMBIAN32__
-#include <config.h>
-#else
-#include "config.h"
-#endif
-#endif
-
-
-#include <string.h>
-#include <math.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <limits.h>
-#ifndef __SYMBIAN32__
-#include <liboil/liboil.h>
-#endif
-
-#include "resample.h"
-#include "buffer.h"
-#include "debug.h"
-
-void resample_scale_ref (ResampleState * r);
-void resample_scale_functable (ResampleState * r);
-
-GST_DEBUG_CATEGORY (libaudioresample_debug);
-
-#ifdef __SYMBIAN32__
-EXPORT_C
-#endif
-void
-resample_init (void)
-{
-  static int inited = 0;
-#ifndef __SYMBIAN32__
-  if (!inited) {
-    oil_init ();
-    inited = 1;
-    GST_DEBUG_CATEGORY_INIT (libaudioresample_debug, "libaudioresample", 0,
-        "audio resampling library");
-
-  }
-#endif  
-}
-#ifdef __SYMBIAN32__
-EXPORT_C
-#endif
-
-
-ResampleState *
-resample_new (void)
-{
-  ResampleState *r;
-
-  r = malloc (sizeof (ResampleState));
-  memset (r, 0, sizeof (ResampleState));
-
-  r->filter_length = 16;
-
-  r->i_start = 0;
-  if (r->filter_length & 1) {
-    r->o_start = 0;
-  } else {
-    r->o_start = r->o_inc * 0.5;
-  }
-
-  r->queue = audioresample_buffer_queue_new ();
-  r->out_tmp = malloc (10000 * sizeof (double));
-
-  r->need_reinit = 1;
-
-  return r;
-}
-#ifdef __SYMBIAN32__
-EXPORT_C
-#endif
-
-
-void
-resample_free (ResampleState * r)
-{
-  if (r->buffer) {
-    free (r->buffer);
-  }
-  if (r->ft) {
-    functable_free (r->ft);
-  }
-  if (r->queue) {
-    audioresample_buffer_queue_free (r->queue);
-  }
-  if (r->out_tmp) {
-    free (r->out_tmp);
-  }
-
-  free (r);
-}
-
-static void
-resample_buffer_free (AudioresampleBuffer * buffer, void *priv)
-{
-  if (buffer->priv2) {
-    ((void (*)(void *)) buffer->priv2) (buffer->priv);
-  }
-}
-
-/*
- * free_func: a function that frees the given closure.  If NULL, caller is
- *            responsible for freeing.
- */
-#ifdef __SYMBIAN32__
-EXPORT_C
-#endif
-
-void
-resample_add_input_data (ResampleState * r, void *data, int size,
-    void (*free_func) (void *), void *closure)
-{
-  AudioresampleBuffer *buffer;
-
-  RESAMPLE_DEBUG ("data %p size %d", data, size);
-
-  buffer = audioresample_buffer_new_with_data (data, size);
-  buffer->free = resample_buffer_free;
-  buffer->priv2 = (void *) free_func;
-  buffer->priv = closure;
-
-  audioresample_buffer_queue_push (r->queue, buffer);
-}
-#ifdef __SYMBIAN32__
-EXPORT_C
-#endif
-
-
-void
-resample_input_flush (ResampleState * r)
-{
-  RESAMPLE_DEBUG ("flush");
-
-  audioresample_buffer_queue_flush (r->queue);
-  r->buffer_filled = 0;
-  r->need_reinit = 1;
-}
-#ifdef __SYMBIAN32__
-EXPORT_C
-#endif
-
-
-void
-resample_input_pushthrough (ResampleState * r)
-{
-  AudioresampleBuffer *buffer;
-  int filter_bytes;
-  int buffer_filled;
-
-  if (r->sample_size == 0)
-    return;
-
-  filter_bytes = r->filter_length * r->sample_size;
-  buffer_filled = r->buffer_filled;
-
-  RESAMPLE_DEBUG ("pushthrough filter_bytes %d, filled %d",
-      filter_bytes, buffer_filled);
-
-  /* if we have no pending samples, we don't need to do anything. */
-  if (buffer_filled <= 0)
-    return;
-
-  /* send filter_length/2 number of samples so we can get to the
-   * last queued samples */
-  buffer = audioresample_buffer_new_and_alloc (filter_bytes / 2);
-  memset (buffer->data, 0, buffer->length);
-
-  RESAMPLE_DEBUG ("pushthrough %u", buffer->length);
-
-  audioresample_buffer_queue_push (r->queue, buffer);
-}
-#ifdef __SYMBIAN32__
-EXPORT_C
-#endif
-
-
-void
-resample_input_eos (ResampleState * r)
-{
-  RESAMPLE_DEBUG ("EOS");
-  resample_input_pushthrough (r);
-  r->eos = 1;
-}
-#ifdef __SYMBIAN32__
-EXPORT_C
-#endif
-
-
-int
-resample_get_output_size_for_input (ResampleState * r, int size)
-{
-  int outsize;
-  double outd;
-  int avail;
-  int filter_bytes;
-  int buffer_filled;
-
-  if (r->sample_size == 0)
-    return 0;
-
-  filter_bytes = r->filter_length * r->sample_size;
-  buffer_filled = filter_bytes / 2 - r->buffer_filled / 2;
-
-  avail =
-      audioresample_buffer_queue_get_depth (r->queue) + size - buffer_filled;
-
-  RESAMPLE_DEBUG ("avail %d, o_rate %f, i_rate %f, filter_bytes %d, filled %d",
-      avail, r->o_rate, r->i_rate, filter_bytes, buffer_filled);
-  if (avail <= 0)
-    return 0;
-
-  outd = (double) avail *r->o_rate / r->i_rate;
-
-  outsize = (int) floor (outd);
-
-  /* round off for sample size */
-  outsize -= outsize % r->sample_size;
-
-  return outsize;
-}
-#ifdef __SYMBIAN32__
-EXPORT_C
-#endif
-
-
-int
-resample_get_input_size_for_output (ResampleState * r, int size)
-{
-  int outsize;
-  double outd;
-  int avail;
-
-  if (r->sample_size == 0)
-    return 0;
-
-  avail = size;
-
-  RESAMPLE_DEBUG ("size %d, o_rate %f, i_rate %f", avail, r->o_rate, r->i_rate);
-  outd = (double) avail *r->i_rate / r->o_rate;
-
-  outsize = (int) ceil (outd);
-
-  /* round off for sample size */
-  outsize -= outsize % r->sample_size;
-
-  return outsize;
-}
-#ifdef __SYMBIAN32__
-EXPORT_C
-#endif
-
-
-int
-resample_get_output_size (ResampleState * r)
-{
-  return resample_get_output_size_for_input (r, 0);
-}
-#ifdef __SYMBIAN32__
-EXPORT_C
-#endif
-
-
-int
-resample_get_output_data (ResampleState * r, void *data, int size)
-{
-  r->o_buf = data;
-  r->o_size = size;
-
-  if (size == 0)
-    return 0;
-
-  switch (r->method) {
-    case 0:
-      resample_scale_ref (r);
-      break;
-    case 1:
-      resample_scale_functable (r);
-      break;
-    default:
-      break;
-  }
-
-  return size - r->o_size;
-}
-#ifdef __SYMBIAN32__
-EXPORT_C
-#endif
-
-
-void
-resample_set_filter_length (ResampleState * r, int length)
-{
-  r->filter_length = length;
-  r->need_reinit = 1;
-}
-#ifdef __SYMBIAN32__
-EXPORT_C
-#endif
-
-
-void
-resample_set_input_rate (ResampleState * r, double rate)
-{
-  r->i_rate = rate;
-  r->need_reinit = 1;
-}
-#ifdef __SYMBIAN32__
-EXPORT_C
-#endif
-
-
-void
-resample_set_output_rate (ResampleState * r, double rate)
-{
-  r->o_rate = rate;
-  r->need_reinit = 1;
-}
-#ifdef __SYMBIAN32__
-EXPORT_C
-#endif
-
-
-void
-resample_set_n_channels (ResampleState * r, int n_channels)
-{
-  r->n_channels = n_channels;
-  r->sample_size = r->n_channels * resample_format_size (r->format);
-  r->need_reinit = 1;
-}
-#ifdef __SYMBIAN32__
-EXPORT_C
-#endif
-
-
-void
-resample_set_format (ResampleState * r, ResampleFormat format)
-{
-  r->format = format;
-  r->sample_size = r->n_channels * resample_format_size (r->format);
-  r->need_reinit = 1;
-}
-#ifdef __SYMBIAN32__
-EXPORT_C
-#endif
-
-
-void
-resample_set_method (ResampleState * r, int method)
-{
-  r->method = method;
-  r->need_reinit = 1;
-}
-#ifdef __SYMBIAN32__
-EXPORT_C
-#endif
-
-
-int
-resample_format_size (ResampleFormat format)
-{
-  switch (format) {
-    case RESAMPLE_FORMAT_S16:
-      return 2;
-    case RESAMPLE_FORMAT_S32:
-    case RESAMPLE_FORMAT_F32:
-      return 4;
-    case RESAMPLE_FORMAT_F64:
-      return 8;
-  }
-  return 0;
-}