--- /dev/null
+/* GStreamer
+ * Copyright (C) 2010 Mark Nauwelaerts <mark.nauwelaerts@collabora.co.uk>
+ * Copyright (C) 2010 Nokia Corporation. All rights reserved.
+ * Contact: Stefan Kost <stefan.kost@nokia.com>
+ *
+ * Tremor modifications <2006>:
+ * Chris Lord, OpenedHand Ltd. <chris@openedhand.com>, http://www.o-hand.com/
+ *
+ * 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 (at your option) 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
+#include "config.h"
+#endif
+
+#include <string.h>
+#include "gstvorbisdeclib.h"
+
+#ifndef TREMOR
+/* These samples can be outside of the float -1.0 -- 1.0 range, this
+ * is allowed, downstream elements are supposed to clip */
+static void
+copy_samples_m (vorbis_sample_t * out, vorbis_sample_t ** in, guint samples,
+ gint channels, gint width)
+{
+ memcpy (out, in[0], samples * sizeof (float));
+}
+
+static void
+copy_samples_s (vorbis_sample_t * out, vorbis_sample_t ** in, guint samples,
+ gint channels, gint width)
+{
+#ifdef GST_VORBIS_DEC_SEQUENTIAL
+ memcpy (out, in[0], samples * sizeof (float));
+ out += samples;
+ memcpy (out, in[1], samples * sizeof (float));
+#else
+ gint j;
+
+ for (j = 0; j < samples; j++) {
+ *out++ = in[0][j];
+ *out++ = in[1][j];
+ }
+#endif
+}
+
+static void
+copy_samples (vorbis_sample_t * out, vorbis_sample_t ** in, guint samples,
+ gint channels, gint width)
+{
+#ifdef GST_VORBIS_DEC_SEQUENTIAL
+ gint i;
+
+ for (i = 0; i < channels; i++) {
+ memcpy (out, in[i], samples * sizeof (float));
+ out += samples;
+ }
+#else
+ gint i, j;
+
+ for (j = 0; j < samples; j++) {
+ for (i = 0; i < channels; i++) {
+ *out++ = in[i][j];
+ }
+ }
+#endif
+}
+
+CopySampleFunc
+get_copy_sample_func (gint channels, gint width)
+{
+ CopySampleFunc f = NULL;
+
+ g_assert (width == 4);
+
+ switch (channels) {
+ case 1:
+ f = copy_samples_m;
+ break;
+ case 2:
+ f = copy_samples_s;
+ break;
+ default:
+ f = copy_samples;
+ break;
+ }
+
+ return f;
+}
+
+#else
+
+/* Taken from Tremor, misc.h */
+#ifdef _ARM_ASSEM_
+static inline ogg_int32_t
+CLIP_TO_15 (ogg_int32_t x)
+{
+ int tmp;
+ asm volatile ("subs %1, %0, #32768\n\t"
+ "movpl %0, #0x7f00\n\t"
+ "orrpl %0, %0, #0xff\n"
+ "adds %1, %0, #32768\n\t"
+ "movmi %0, #0x8000":"+r" (x), "=r" (tmp)
+ ::"cc");
+
+ return (x);
+}
+#else
+static inline ogg_int32_t
+CLIP_TO_15 (ogg_int32_t x)
+{
+ int ret = x;
+
+ ret -= ((x <= 32767) - 1) & (x - 32767);
+ ret -= ((x >= -32768) - 1) & (x + 32768);
+ return (ret);
+}
+#endif
+
+static void
+copy_samples_32_m (vorbis_sample_t * _out, vorbis_sample_t ** _in,
+ guint samples, gint channels, gint width)
+{
+ gint32 *out = (gint32 *) _out;
+ ogg_int32_t **in = (ogg_int32_t **) _in;
+ gint j;
+
+ for (j = 0; j < samples; j++) {
+ *out++ = CLIP_TO_15 (in[0][j] >> 9);
+ }
+}
+
+static void
+copy_samples_32_s (vorbis_sample_t * _out, vorbis_sample_t ** _in,
+ guint samples, gint channels, gint width)
+{
+ gint32 *out = (gint32 *) _out;
+ ogg_int32_t **in = (ogg_int32_t **) _in;
+ gint j;
+
+ for (j = 0; j < samples; j++) {
+ *out++ = CLIP_TO_15 (in[0][j] >> 9);
+ *out++ = CLIP_TO_15 (in[1][j] >> 9);
+ }
+}
+
+static void
+copy_samples_32 (vorbis_sample_t * _out, vorbis_sample_t ** _in, guint samples,
+ gint channels, gint width)
+{
+ gint32 *out = (gint32 *) _out;
+ ogg_int32_t **in = (ogg_int32_t **) _in;
+ gint i, j;
+
+ for (j = 0; j < samples; j++) {
+ for (i = 0; i < channels; i++) {
+ *out++ = CLIP_TO_15 (in[i][j] >> 9);
+ }
+ }
+}
+
+static void
+copy_samples_16_m (vorbis_sample_t * _out, vorbis_sample_t ** _in,
+ guint samples, gint channels, gint width)
+{
+ gint16 *out = (gint16 *) _out;
+ ogg_int32_t **in = (ogg_int32_t **) _in;
+ gint j;
+
+ for (j = 0; j < samples; j++) {
+ *out++ = CLIP_TO_15 (in[0][j] >> 9);
+ }
+}
+
+static void
+copy_samples_16_s (vorbis_sample_t * _out, vorbis_sample_t ** _in,
+ guint samples, gint channels, gint width)
+{
+ gint16 *out = (gint16 *) _out;
+ ogg_int32_t **in = (ogg_int32_t **) _in;
+ gint j;
+
+ for (j = 0; j < samples; j++) {
+ *out++ = CLIP_TO_15 (in[0][j] >> 9);
+ *out++ = CLIP_TO_15 (in[1][j] >> 9);
+ }
+}
+
+static void
+copy_samples_16 (vorbis_sample_t * _out, vorbis_sample_t ** _in, guint samples,
+ gint channels, gint width)
+{
+ gint16 *out = (gint16 *) _out;
+ ogg_int32_t **in = (ogg_int32_t **) _in;
+ gint i, j;
+
+ for (j = 0; j < samples; j++) {
+ for (i = 0; i < channels; i++) {
+ *out++ = CLIP_TO_15 (in[i][j] >> 9);
+ }
+ }
+}
+
+CopySampleFunc
+get_copy_sample_func (gint channels, gint width)
+{
+ CopySampleFunc f = NULL;
+
+ if (width == 4) {
+ switch (channels) {
+ case 1:
+ f = copy_samples_32_m;
+ break;
+ case 2:
+ f = copy_samples_32_s;
+ break;
+ default:
+ f = copy_samples_32;
+ break;
+ }
+ } else if (width == 2) {
+ switch (channels) {
+ case 1:
+ f = copy_samples_16_m;
+ break;
+ case 2:
+ f = copy_samples_16_s;
+ break;
+ default:
+ f = copy_samples_16;
+ break;
+ }
+ } else {
+ g_assert_not_reached ();
+ }
+ return f;
+}
+
+#endif
projects / mafwsubrenderer / blobdiff