2007-10-18 21:45:14 +00:00
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/*
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*
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* BlueZ - Bluetooth protocol stack for Linux
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*
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* Copyright (C) 2004-2007 Marcel Holtmann <marcel@holtmann.org>
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*
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*/
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2007-10-24 21:36:29 +00:00
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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2007-10-18 21:45:14 +00:00
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#include "ipc.h"
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2008-01-23 13:14:02 +00:00
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#include <math.h>
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2007-10-24 21:33:18 +00:00
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#include "gstsbcutil.h"
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2007-10-18 21:45:14 +00:00
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/*
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* Selects one rate from a list of possible rates
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* TODO - use a better approach to this (it is selecting the last element)
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*/
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2007-10-18 21:46:49 +00:00
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gint
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gst_sbc_select_rate_from_list (const GValue * value)
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2007-10-18 21:45:14 +00:00
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{
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2007-10-18 21:46:49 +00:00
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guint size = gst_value_list_get_size (value);
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return g_value_get_int (gst_value_list_get_value (value, size - 1));
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2007-10-18 21:45:14 +00:00
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}
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/*
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* Selects one number of channels option from a range of possible numbers
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* TODO - use a better approach to this (it is selecting the maximum value)
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*/
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2007-10-18 21:46:49 +00:00
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gint
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gst_sbc_select_channels_from_range (const GValue * value)
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2007-10-18 21:45:14 +00:00
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{
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2007-10-18 21:46:49 +00:00
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return gst_value_get_int_range_max (value);
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2007-10-18 21:45:14 +00:00
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}
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/*
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* Selects one number of blocks from a list of possible blocks
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* TODO - use a better approach to this (it is selecting the last element)
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*/
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2007-10-18 21:46:49 +00:00
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gint
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gst_sbc_select_blocks_from_list (const GValue * value)
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2007-10-18 21:45:14 +00:00
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{
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2007-10-18 21:46:49 +00:00
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guint size = gst_value_list_get_size (value);
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return g_value_get_int (gst_value_list_get_value (value, size - 1));
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2007-10-18 21:45:14 +00:00
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}
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/*
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* Selects one number of subbands from a list
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* TODO - use a better approach to this (it is selecting the last element)
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*/
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2007-10-18 21:46:49 +00:00
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gint
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gst_sbc_select_subbands_from_list (const GValue * value)
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2007-10-18 21:45:14 +00:00
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{
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2007-10-18 21:46:49 +00:00
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guint size = gst_value_list_get_size (value);
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return g_value_get_int (gst_value_list_get_value (value, size - 1));
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2007-10-18 21:45:14 +00:00
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}
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2007-10-29 15:02:26 +00:00
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/*
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* Selects one bitpool option from a range
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* TODO - use a better approach to this (it is selecting the maximum value)
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*/
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gint
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gst_sbc_select_bitpool_from_range (const GValue * value)
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{
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return gst_value_get_int_range_max (value);
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}
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2007-10-18 21:45:14 +00:00
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/*
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* Selects one allocation mode from the ones on the list
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* TODO - use a better approach
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*/
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2007-10-18 21:46:49 +00:00
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const gchar *
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gst_sbc_get_allocation_from_list (const GValue * value)
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2007-10-18 21:45:14 +00:00
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{
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2007-10-18 21:46:49 +00:00
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guint size = gst_value_list_get_size (value);
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return g_value_get_string (gst_value_list_get_value (value, size - 1));
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2007-10-18 21:45:14 +00:00
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}
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/*
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* Selects one mode from the ones on the list
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*/
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2007-10-18 21:46:49 +00:00
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const gchar *
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2008-01-23 13:19:32 +00:00
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gst_sbc_get_mode_from_list (const GValue * list)
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2007-10-18 21:45:14 +00:00
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{
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2008-01-23 13:19:32 +00:00
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int i;
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const GValue *value;
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const gchar *aux;
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guint size = gst_value_list_get_size (list);
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for (i = 0; i < size; i++) {
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value = gst_value_list_get_value (list, i);
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aux = g_value_get_string (value);
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2008-01-24 14:25:29 +00:00
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if (strcmp ("joint", aux) == 0) {
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return "joint";
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2008-01-23 13:19:32 +00:00
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}
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}
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return g_value_get_string (gst_value_list_get_value (list, size - 1));
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2007-10-18 21:45:14 +00:00
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}
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2007-10-18 21:46:49 +00:00
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gint
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gst_sbc_get_allocation_mode_int (const gchar * allocation)
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2007-10-18 21:45:14 +00:00
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{
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2007-10-18 21:46:49 +00:00
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if (g_ascii_strcasecmp (allocation, "loudness") == 0)
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2007-11-21 20:24:11 +00:00
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return BT_A2DP_ALLOCATION_LOUDNESS;
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2007-10-18 21:46:49 +00:00
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else if (g_ascii_strcasecmp (allocation, "snr") == 0)
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2007-11-21 20:24:11 +00:00
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return BT_A2DP_ALLOCATION_SNR;
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2007-10-18 21:46:49 +00:00
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else if (g_ascii_strcasecmp (allocation, "auto") == 0)
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2007-11-21 20:24:11 +00:00
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return BT_A2DP_ALLOCATION_AUTO;
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2007-10-18 21:46:49 +00:00
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else
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return -1;
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2007-10-18 21:45:14 +00:00
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}
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2007-10-18 21:46:49 +00:00
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gint
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gst_sbc_get_mode_int (const gchar * mode)
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2007-10-18 21:45:14 +00:00
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{
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2007-10-18 21:46:49 +00:00
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if (g_ascii_strcasecmp (mode, "joint") == 0)
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2007-11-21 20:24:11 +00:00
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return BT_A2DP_CHANNEL_MODE_JOINT_STEREO;
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2007-10-18 21:46:49 +00:00
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else if (g_ascii_strcasecmp (mode, "stereo") == 0)
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2007-11-21 20:24:11 +00:00
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return BT_A2DP_CHANNEL_MODE_STEREO;
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2007-10-18 21:46:49 +00:00
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else if (g_ascii_strcasecmp (mode, "dual") == 0)
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2007-11-21 20:24:11 +00:00
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return BT_A2DP_CHANNEL_MODE_DUAL_CHANNEL;
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2007-10-18 21:46:49 +00:00
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else if (g_ascii_strcasecmp (mode, "mono") == 0)
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2007-11-21 20:24:11 +00:00
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return BT_A2DP_CHANNEL_MODE_MONO;
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2007-10-18 21:46:49 +00:00
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else if (g_ascii_strcasecmp (mode, "auto") == 0)
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2007-11-21 20:24:11 +00:00
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return BT_A2DP_CHANNEL_MODE_AUTO;
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2007-10-18 21:46:49 +00:00
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else
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return -1;
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2007-10-18 21:45:14 +00:00
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}
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2008-01-24 14:25:29 +00:00
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/* FIXME add dual when sbc_t supports it */
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gboolean
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gst_sbc_get_mode_int_for_sbc_t (const gchar * mode)
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{
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if (g_ascii_strcasecmp (mode, "joint") == 0)
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return TRUE;
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else if (g_ascii_strcasecmp (mode, "stereo") == 0)
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return FALSE;
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else if (g_ascii_strcasecmp (mode, "mono") == 0)
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return FALSE;
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else
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return -1;
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}
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2007-10-18 21:46:49 +00:00
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const gchar *
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gst_sbc_get_mode_string (int joint)
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2007-10-18 21:45:14 +00:00
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{
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2007-10-18 21:46:49 +00:00
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switch (joint) {
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2007-11-21 20:24:11 +00:00
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case BT_A2DP_CHANNEL_MODE_MONO:
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2007-10-18 21:46:49 +00:00
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return "mono";
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2007-11-21 20:24:11 +00:00
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case BT_A2DP_CHANNEL_MODE_DUAL_CHANNEL:
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2007-10-18 21:46:49 +00:00
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return "dual";
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2007-11-21 20:24:11 +00:00
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case BT_A2DP_CHANNEL_MODE_STEREO:
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2007-10-18 21:46:49 +00:00
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return "stereo";
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2007-11-21 20:24:11 +00:00
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case BT_A2DP_CHANNEL_MODE_JOINT_STEREO:
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2007-10-18 21:46:49 +00:00
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return "joint";
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2007-11-21 20:24:11 +00:00
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case BT_A2DP_CHANNEL_MODE_AUTO:
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2007-10-18 21:46:49 +00:00
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return NULL; /* TODO what should be selected here? */
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default:
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return NULL;
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}
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2007-10-18 21:45:14 +00:00
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}
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2007-10-18 21:46:49 +00:00
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const gchar *
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gst_sbc_get_allocation_string (int alloc)
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2007-10-18 21:45:14 +00:00
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{
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2007-10-18 21:46:49 +00:00
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switch (alloc) {
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2007-11-21 20:24:11 +00:00
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case BT_A2DP_ALLOCATION_LOUDNESS:
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2007-10-18 21:46:49 +00:00
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return "loudness";
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2007-11-21 20:24:11 +00:00
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case BT_A2DP_ALLOCATION_SNR:
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2007-10-18 21:46:49 +00:00
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return "snr";
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2007-11-21 20:24:11 +00:00
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case BT_A2DP_ALLOCATION_AUTO:
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2007-11-01 19:45:00 +00:00
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return "loudness"; /* TODO what should be selected here? */
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2007-10-18 21:46:49 +00:00
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default:
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return NULL;
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}
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2007-10-18 21:45:14 +00:00
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}
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2007-11-01 19:45:00 +00:00
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2008-01-23 13:19:32 +00:00
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/* channel mode */
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#define SBC_CM_MONO 0x00
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#define SBC_CM_DUAL_CHANNEL 0x01
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#define SBC_CM_STEREO 0x02
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#define SBC_CM_JOINT_STEREO 0x03
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/* allocation mode */
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#define SBC_AM_LOUDNESS 0x00
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#define SBC_AM_SNR 0x01
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const gchar *
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gst_sbc_get_mode_string_from_sbc_t (int channels, int joint)
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{
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if (channels == 2 && joint == 1)
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return "joint";
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else if (channels == 2 && joint == 0)
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return "stereo";
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2008-01-24 14:25:29 +00:00
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else if (channels == 1 && joint == 0)
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return "mono";
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2008-01-23 13:19:32 +00:00
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else
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return NULL;
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}
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const gchar *
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gst_sbc_get_allocation_string_from_sbc_t (int alloc)
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{
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switch (alloc) {
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case SBC_AM_LOUDNESS:
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return "loudness";
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case SBC_AM_SNR:
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return "snr";
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default:
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return NULL;
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}
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}
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GstCaps *
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gst_sbc_parse_caps_from_sbc (sbc_t * sbc)
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{
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GstCaps *caps;
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const gchar *mode_str;
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const gchar *allocation_str;
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mode_str = gst_sbc_get_mode_string_from_sbc_t (sbc->channels, sbc->joint);
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allocation_str = gst_sbc_get_allocation_string_from_sbc_t (sbc->allocation);
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caps = gst_caps_new_simple ("audio/x-sbc",
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"rate", G_TYPE_INT, sbc->rate,
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"channels", G_TYPE_INT, sbc->channels,
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"mode", G_TYPE_STRING, mode_str,
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"subbands", G_TYPE_INT, sbc->subbands,
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"blocks", G_TYPE_INT, sbc->blocks,
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"allocation", G_TYPE_STRING, allocation_str,
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"bitpool", G_TYPE_INT, sbc->bitpool, NULL);
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return caps;
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}
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2007-11-01 19:45:00 +00:00
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GstCaps *
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2007-11-21 20:24:11 +00:00
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gst_sbc_caps_from_sbc (sbc_capabilities_t * sbc, gint channels)
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2007-11-01 19:45:00 +00:00
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{
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GstCaps *caps;
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const gchar *mode_str;
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const gchar *allocation_str;
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2007-11-21 20:24:11 +00:00
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mode_str = gst_sbc_get_mode_string (sbc->channel_mode);
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allocation_str = gst_sbc_get_allocation_string (sbc->allocation_method);
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2007-11-01 19:45:00 +00:00
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caps = gst_caps_new_simple ("audio/x-sbc",
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2007-11-21 20:24:11 +00:00
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"rate", G_TYPE_INT, sbc->frequency,
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2007-11-01 19:45:00 +00:00
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"channels", G_TYPE_INT, channels,
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"mode", G_TYPE_STRING, mode_str,
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"subbands", G_TYPE_INT, sbc->subbands,
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2007-11-21 20:24:11 +00:00
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"blocks", G_TYPE_INT, sbc->block_length,
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2007-11-01 19:45:00 +00:00
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"allocation", G_TYPE_STRING, allocation_str,
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2007-11-21 20:24:11 +00:00
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"bitpool", G_TYPE_INT, sbc->max_bitpool, NULL);
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2007-11-01 19:45:00 +00:00
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return caps;
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}
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2007-11-21 20:24:11 +00:00
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/*
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* Given a GstCaps, this will return a fixed GstCaps on sucessfull conversion.
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* If an error occurs, it will return NULL and error_message will contain the
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* error message.
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*
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* error_message must be passed NULL, if an error occurs, the caller has the
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* ownership of the error_message, it must be freed after use.
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*/
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GstCaps *
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gst_sbc_util_caps_fixate (GstCaps * caps, gchar ** error_message)
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{
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GstCaps *result;
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GstStructure *structure;
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const GValue *value;
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gboolean error = FALSE;
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gint temp, rate, channels, blocks, subbands, bitpool;
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const gchar *allocation = NULL;
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const gchar *mode = NULL;
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g_assert (*error_message == NULL);
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|
|
structure = gst_caps_get_structure (caps, 0);
|
|
|
|
|
|
|
|
if (!gst_structure_has_field (structure, "rate")) {
|
|
|
|
error = TRUE;
|
|
|
|
*error_message = g_strdup ("no rate");
|
|
|
|
goto error;
|
|
|
|
} else {
|
|
|
|
value = gst_structure_get_value (structure, "rate");
|
|
|
|
if (GST_VALUE_HOLDS_LIST (value))
|
|
|
|
temp = gst_sbc_select_rate_from_list (value);
|
|
|
|
else
|
|
|
|
temp = g_value_get_int (value);
|
|
|
|
rate = temp;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!gst_structure_has_field (structure, "channels")) {
|
|
|
|
error = TRUE;
|
|
|
|
*error_message = g_strdup ("no channels");
|
|
|
|
goto error;
|
|
|
|
} else {
|
|
|
|
value = gst_structure_get_value (structure, "channels");
|
|
|
|
if (GST_VALUE_HOLDS_INT_RANGE (value))
|
|
|
|
temp = gst_sbc_select_channels_from_range (value);
|
|
|
|
else
|
|
|
|
temp = g_value_get_int (value);
|
|
|
|
channels = temp;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!gst_structure_has_field (structure, "blocks")) {
|
|
|
|
error = TRUE;
|
|
|
|
*error_message = g_strdup ("no blocks.");
|
|
|
|
goto error;
|
|
|
|
} else {
|
|
|
|
value = gst_structure_get_value (structure, "blocks");
|
|
|
|
if (GST_VALUE_HOLDS_LIST (value))
|
|
|
|
temp = gst_sbc_select_blocks_from_list (value);
|
|
|
|
else
|
|
|
|
temp = g_value_get_int (value);
|
|
|
|
blocks = temp;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!gst_structure_has_field (structure, "subbands")) {
|
|
|
|
error = TRUE;
|
|
|
|
*error_message = g_strdup ("no subbands");
|
|
|
|
goto error;
|
|
|
|
} else {
|
|
|
|
value = gst_structure_get_value (structure, "subbands");
|
|
|
|
if (GST_VALUE_HOLDS_LIST (value))
|
|
|
|
temp = gst_sbc_select_subbands_from_list (value);
|
|
|
|
else
|
|
|
|
temp = g_value_get_int (value);
|
|
|
|
subbands = temp;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!gst_structure_has_field (structure, "bitpool")) {
|
|
|
|
error = TRUE;
|
|
|
|
*error_message = g_strdup ("no bitpool");
|
|
|
|
goto error;
|
|
|
|
} else {
|
|
|
|
value = gst_structure_get_value (structure, "bitpool");
|
|
|
|
if (GST_VALUE_HOLDS_INT_RANGE (value))
|
|
|
|
temp = gst_sbc_select_bitpool_from_range (value);
|
|
|
|
else
|
|
|
|
temp = g_value_get_int (value);
|
|
|
|
bitpool = temp;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!gst_structure_has_field (structure, "allocation")) {
|
|
|
|
error = TRUE;
|
|
|
|
*error_message = g_strdup ("no allocation");
|
|
|
|
goto error;
|
|
|
|
} else {
|
|
|
|
value = gst_structure_get_value (structure, "allocation");
|
|
|
|
if (GST_VALUE_HOLDS_LIST (value))
|
|
|
|
allocation = gst_sbc_get_allocation_from_list (value);
|
|
|
|
else
|
|
|
|
allocation = g_value_get_string (value);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!gst_structure_has_field (structure, "mode")) {
|
|
|
|
error = TRUE;
|
|
|
|
*error_message = g_strdup ("no mode");
|
|
|
|
goto error;
|
|
|
|
} else {
|
|
|
|
value = gst_structure_get_value (structure, "mode");
|
|
|
|
if (GST_VALUE_HOLDS_LIST (value))
|
|
|
|
mode = gst_sbc_get_mode_from_list (value);
|
|
|
|
else
|
|
|
|
mode = g_value_get_string (value);
|
|
|
|
}
|
|
|
|
|
|
|
|
error:
|
|
|
|
if (error)
|
|
|
|
return NULL;
|
|
|
|
|
|
|
|
result = gst_caps_new_simple ("audio/x-sbc",
|
|
|
|
"rate", G_TYPE_INT, rate,
|
|
|
|
"channels", G_TYPE_INT, channels,
|
|
|
|
"mode", G_TYPE_STRING, mode,
|
|
|
|
"blocks", G_TYPE_INT, blocks,
|
|
|
|
"subbands", G_TYPE_INT, subbands,
|
|
|
|
"allocation", G_TYPE_STRING, allocation,
|
|
|
|
"bitpool", G_TYPE_INT, bitpool, NULL);
|
|
|
|
|
|
|
|
return result;
|
|
|
|
}
|
2008-01-23 13:14:02 +00:00
|
|
|
|
|
|
|
/**
|
|
|
|
* Sets the int field_value to the param "field" on the structure.
|
|
|
|
* value is used to do the operation, it must be a uninitialized (zero-filled)
|
|
|
|
* GValue, it will be left unitialized at the end of the function.
|
|
|
|
*/
|
|
|
|
void
|
|
|
|
gst_sbc_util_set_structure_int_param (GstStructure * structure,
|
|
|
|
const gchar * field, gint field_value, GValue * value)
|
|
|
|
{
|
|
|
|
value = g_value_init (value, G_TYPE_INT);
|
|
|
|
g_value_set_int (value, field_value);
|
|
|
|
gst_structure_set_value (structure, field, value);
|
|
|
|
g_value_unset (value);
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Sets the string field_value to the param "field" on the structure.
|
|
|
|
* value is used to do the operation, it must be a uninitialized (zero-filled)
|
|
|
|
* GValue, it will be left unitialized at the end of the function.
|
|
|
|
*/
|
|
|
|
void
|
|
|
|
gst_sbc_util_set_structure_string_param (GstStructure * structure,
|
|
|
|
const gchar * field, const gchar * field_value, GValue * value)
|
|
|
|
{
|
|
|
|
value = g_value_init (value, G_TYPE_STRING);
|
|
|
|
g_value_set_string (value, field_value);
|
|
|
|
gst_structure_set_value (structure, field, value);
|
|
|
|
g_value_unset (value);
|
|
|
|
}
|
|
|
|
|
|
|
|
gboolean
|
|
|
|
gst_sbc_util_fill_sbc_params (sbc_t * sbc, GstCaps * caps)
|
|
|
|
{
|
|
|
|
GstStructure *structure;
|
|
|
|
gint rate, channels, subbands, blocks, bitpool;
|
|
|
|
const gchar *mode;
|
|
|
|
const gchar *allocation;
|
|
|
|
|
|
|
|
g_assert (gst_caps_is_fixed (caps));
|
|
|
|
|
|
|
|
structure = gst_caps_get_structure (caps, 0);
|
|
|
|
|
|
|
|
if (!gst_structure_get_int (structure, "rate", &rate))
|
|
|
|
return FALSE;
|
|
|
|
if (!gst_structure_get_int (structure, "channels", &channels))
|
|
|
|
return FALSE;
|
|
|
|
if (!gst_structure_get_int (structure, "subbands", &subbands))
|
|
|
|
return FALSE;
|
|
|
|
if (!gst_structure_get_int (structure, "blocks", &blocks))
|
|
|
|
return FALSE;
|
|
|
|
if (!gst_structure_get_int (structure, "bitpool", &bitpool))
|
|
|
|
return FALSE;
|
|
|
|
|
|
|
|
if (!(mode = gst_structure_get_string (structure, "mode")))
|
|
|
|
return FALSE;
|
|
|
|
if (!(allocation = gst_structure_get_string (structure, "allocation")))
|
|
|
|
return FALSE;
|
|
|
|
|
|
|
|
sbc->rate = rate;
|
|
|
|
sbc->channels = channels;
|
|
|
|
sbc->blocks = blocks;
|
|
|
|
sbc->subbands = subbands;
|
|
|
|
sbc->bitpool = bitpool;
|
2008-01-24 14:25:29 +00:00
|
|
|
sbc->joint = gst_sbc_get_mode_int_for_sbc_t (mode);
|
2008-01-23 13:14:02 +00:00
|
|
|
sbc->allocation = gst_sbc_get_allocation_mode_int (allocation);
|
|
|
|
|
|
|
|
return TRUE;
|
|
|
|
}
|
|
|
|
|
|
|
|
gint
|
|
|
|
gst_sbc_util_calc_frame_len (gint subbands, gint channels,
|
|
|
|
gint blocks, gint bitpool, gint channel_mode)
|
|
|
|
{
|
|
|
|
gint len;
|
|
|
|
gint join;
|
|
|
|
len = 4 + (4 * subbands * channels) / 8;
|
|
|
|
|
|
|
|
if (channel_mode == BT_A2DP_CHANNEL_MODE_MONO ||
|
|
|
|
channel_mode == BT_A2DP_CHANNEL_MODE_DUAL_CHANNEL)
|
|
|
|
len += ((blocks * channels * bitpool) + 7) / 8;
|
|
|
|
else {
|
|
|
|
join = channel_mode == BT_A2DP_CHANNEL_MODE_JOINT_STEREO ? 1 : 0;
|
|
|
|
len += ((join * subbands + blocks * bitpool) + 7) / 8;
|
|
|
|
}
|
|
|
|
|
|
|
|
return len;
|
|
|
|
}
|
|
|
|
|
|
|
|
gint
|
|
|
|
gst_sbc_util_calc_bitrate (gint frame_len, gint rate, gint subbands,
|
|
|
|
gint blocks)
|
|
|
|
{
|
|
|
|
return (((frame_len * 8 * rate / subbands) / blocks) / 1000);
|
|
|
|
}
|
|
|
|
|
|
|
|
gint64
|
|
|
|
gst_sbc_util_calc_frame_duration (gint rate, gint blocks, gint subbands)
|
|
|
|
{
|
|
|
|
gint64 res = 1000000;
|
|
|
|
return res * blocks * subbands / rate;
|
|
|
|
}
|