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Viewing changes to daemon/libs/pjproject-2.0.1/pjmedia/src/pjmedia/stereo_port.c

  • Committer: Package Import Robot
  • Author(s): Mark Purcell
  • Date: 2014-01-28 18:23:36 UTC
  • mfrom: (4.3.4 sid)
  • Revision ID: package-import@ubuntu.com-20140128182336-jrsv0k9u6cawc068
Tags: 1.3.0-1
http://bugs.debian.org/735846
http://bugs.debian.org/727164
http://bugs.debian.org/718178
http://bugs.debian.org/736583
http://bugs.debian.org/722040
http://bugs.debian.org/736746
* New upstream release 
  - Fixes "New Upstream Release" (Closes: #735846)
  - Fixes "Ringtone does not stop" (Closes: #727164)
  - Fixes "[sflphone-kde] crash on startup" (Closes: #718178)
  - Fixes "sflphone GUI crashes when call is hung up" (Closes: #736583)
* Build-Depends: ensure GnuTLS 2.6
  - libucommon-dev (>= 6.0.7-1.1), libccrtp-dev (>= 2.0.6-3)
  - Fixes "FTBFS Build-Depends libgnutls{26,28}-dev" (Closes: #722040)
* Fix "boost 1.49 is going away" unversioned Build-Depends: (Closes: #736746)
* Add Build-Depends: libsndfile-dev, nepomuk-core-dev

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daemon/libs/pjproject-2.0.1/pjmedia/src/pjmedia/stereo_port.c
1
 
/* $Id: stereo_port.c 3664 2011-07-19 03:42:28Z nanang $ */
2
 
/*
3
 
 * Copyright (C) 2008-2011 Teluu Inc. (http://www.teluu.com)
4
 
 * Copyright (C) 2003-2008 Benny Prijono <benny@prijono.org>
5
 
 *
6
 
 * This program is free software; you can redistribute it and/or modify
7
 
 * it under the terms of the GNU General Public License as published by
8
 
 * the Free Software Foundation; either version 2 of the License, or
9
 
 * (at your option) any later version.
10
 
 *
11
 
 * This program is distributed in the hope that it will be useful,
12
 
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13
 
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14
 
 * GNU General Public License for more details.
15
 
 *
16
 
 * You should have received a copy of the GNU General Public License
17
 
 * along with this program; if not, write to the Free Software
18
 
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
19
 
 */
20
 
 
21
 
#include <pjmedia/stereo.h>
22
 
#include <pj/assert.h>
23
 
#include <pj/pool.h>
24
 
#include <pj/string.h>
25
 
 
26
 
 
27
 
#define SIGNATURE               PJMEDIA_SIG_PORT_STEREO
28
 
 
29
 
 
30
 
struct stereo_port
31
 
{
32
 
    pjmedia_port         base;
33
 
    pjmedia_port        *dn_port;
34
 
    unsigned             options;
35
 
    pj_int16_t          *put_buf;
36
 
    pj_int16_t          *get_buf;
37
 
};
38
 
 
39
 
 
40
 
 
41
 
static pj_status_t stereo_put_frame(pjmedia_port *this_port,
42
 
                                    pjmedia_frame *frame);
43
 
static pj_status_t stereo_get_frame(pjmedia_port *this_port,
44
 
                                    pjmedia_frame *frame);
45
 
static pj_status_t stereo_destroy(pjmedia_port *this_port);
46
 
 
47
 
 
48
 
 
49
 
PJ_DEF(pj_status_t) pjmedia_stereo_port_create( pj_pool_t *pool,
50
 
                                                pjmedia_port *dn_port,
51
 
                                                unsigned channel_count,
52
 
                                                unsigned options,
53
 
                                                pjmedia_port **p_port )
54
 
{
55
 
    const pj_str_t name = pj_str("stereo");
56
 
    struct stereo_port *sport;
57
 
    unsigned samples_per_frame;
58
 
 
59
 
    /* Validate arguments. */
60
 
    PJ_ASSERT_RETURN(pool && dn_port && channel_count && p_port, PJ_EINVAL);
61
 
 
62
 
    /* Only supports 16bit samples per frame */
63
 
    PJ_ASSERT_RETURN(PJMEDIA_PIA_BITS(&dn_port->info) == 16,
64
 
                     PJMEDIA_ENCBITS);
65
 
 
66
 
    /* Validate channel counts */
67
 
    PJ_ASSERT_RETURN(((PJMEDIA_PIA_CCNT(&dn_port->info)>1 &&
68
 
                              channel_count==1) ||
69
 
                      (PJMEDIA_PIA_CCNT(&dn_port->info)==1 &&
70
 
                              channel_count>1)),
71
 
                      PJ_EINVAL);
72
 
 
73
 
    /* Create and initialize port. */
74
 
    sport = PJ_POOL_ZALLOC_T(pool, struct stereo_port);
75
 
    PJ_ASSERT_RETURN(sport != NULL, PJ_ENOMEM);
76
 
 
77
 
    samples_per_frame = PJMEDIA_PIA_SPF(&dn_port->info) * channel_count /
78
 
                          PJMEDIA_PIA_CCNT(&dn_port->info);
79
 
 
80
 
    pjmedia_port_info_init(&sport->base.info, &name, SIGNATURE,
81
 
                           PJMEDIA_PIA_SRATE(&dn_port->info),
82
 
                           channel_count,
83
 
                           PJMEDIA_PIA_BITS(&dn_port->info),
84
 
                           samples_per_frame);
85
 
 
86
 
    sport->dn_port = dn_port;
87
 
    sport->options = options;
88
 
 
89
 
    /* We always need buffer for put_frame */
90
 
    sport->put_buf = (pj_int16_t*)
91
 
                     pj_pool_alloc(pool,
92
 
                                   PJMEDIA_PIA_AVG_FSZ(&dn_port->info));
93
 
 
94
 
    /* See if we need buffer for get_frame */
95
 
    if (PJMEDIA_PIA_CCNT(&dn_port->info) > channel_count) {
96
 
        sport->get_buf = (pj_int16_t*)
97
 
                         pj_pool_alloc(pool,
98
 
                                       PJMEDIA_PIA_AVG_FSZ(&dn_port->info));
99
 
    }
100
 
 
101
 
    /* Media port interface */
102
 
    sport->base.get_frame = &stereo_get_frame;
103
 
    sport->base.put_frame = &stereo_put_frame;
104
 
    sport->base.on_destroy = &stereo_destroy;
105
 
 
106
 
 
107
 
    /* Done */
108
 
    *p_port = &sport->base;
109
 
 
110
 
    return PJ_SUCCESS;
111
 
}
112
 
 
113
 
static pj_status_t stereo_put_frame(pjmedia_port *this_port,
114
 
                                    pjmedia_frame *frame)
115
 
{
116
 
    struct stereo_port *sport = (struct stereo_port*) this_port;
117
 
    const pjmedia_audio_format_detail *s_afd, *dn_afd;
118
 
    pjmedia_frame tmp_frame;
119
 
 
120
 
    /* Return if we don't have downstream port. */
121
 
    if (sport->dn_port == NULL) {
122
 
        return PJ_SUCCESS;
123
 
    }
124
 
 
125
 
    s_afd = pjmedia_format_get_audio_format_detail(&this_port->info.fmt, 1);
126
 
    dn_afd = pjmedia_format_get_audio_format_detail(&sport->dn_port->info.fmt,
127
 
                                                    1);
128
 
 
129
 
    if (frame->type == PJMEDIA_FRAME_TYPE_AUDIO) {
130
 
        tmp_frame.buf = sport->put_buf;
131
 
        if (dn_afd->channel_count == 1) {
132
 
            pjmedia_convert_channel_nto1((pj_int16_t*)tmp_frame.buf,
133
 
                                         (const pj_int16_t*)frame->buf,
134
 
                                         s_afd->channel_count,
135
 
                                         PJMEDIA_AFD_SPF(s_afd),
136
 
                                         (sport->options & PJMEDIA_STEREO_MIX),
137
 
                                         0);
138
 
        } else {
139
 
            pjmedia_convert_channel_1ton((pj_int16_t*)tmp_frame.buf,
140
 
                                         (const pj_int16_t*)frame->buf,
141
 
                                         dn_afd->channel_count,
142
 
                                         PJMEDIA_AFD_SPF(s_afd),
143
 
                                         sport->options);
144
 
        }
145
 
        tmp_frame.size = PJMEDIA_AFD_AVG_FSZ(dn_afd);
146
 
    } else {
147
 
        tmp_frame.buf = frame->buf;
148
 
        tmp_frame.size = frame->size;
149
 
    }
150
 
 
151
 
    tmp_frame.type = frame->type;
152
 
    tmp_frame.timestamp.u64 = frame->timestamp.u64;
153
 
 
154
 
    return pjmedia_port_put_frame( sport->dn_port, &tmp_frame );
155
 
}
156
 
 
157
 
 
158
 
 
159
 
static pj_status_t stereo_get_frame(pjmedia_port *this_port,
160
 
                                    pjmedia_frame *frame)
161
 
{
162
 
    struct stereo_port *sport = (struct stereo_port*) this_port;
163
 
    const pjmedia_audio_format_detail *s_afd, *dn_afd;
164
 
    pjmedia_frame tmp_frame;
165
 
    pj_status_t status;
166
 
 
167
 
    /* Return silence if we don't have downstream port */
168
 
    if (sport->dn_port == NULL) {
169
 
        pj_bzero(frame->buf, frame->size);
170
 
        return PJ_SUCCESS;
171
 
    }
172
 
 
173
 
    s_afd = pjmedia_format_get_audio_format_detail(&this_port->info.fmt, 1);
174
 
    dn_afd = pjmedia_format_get_audio_format_detail(&sport->dn_port->info.fmt,
175
 
                                                    1);
176
 
 
177
 
    tmp_frame.buf = sport->get_buf? sport->get_buf : frame->buf;
178
 
    tmp_frame.size = PJMEDIA_PIA_AVG_FSZ(&sport->dn_port->info);
179
 
    tmp_frame.timestamp.u64 = frame->timestamp.u64;
180
 
    tmp_frame.type = PJMEDIA_FRAME_TYPE_AUDIO;
181
 
 
182
 
    status = pjmedia_port_get_frame( sport->dn_port, &tmp_frame);
183
 
    if (status != PJ_SUCCESS)
184
 
        return status;
185
 
 
186
 
    if (tmp_frame.type != PJMEDIA_FRAME_TYPE_AUDIO) {
187
 
        frame->type = tmp_frame.type;
188
 
        frame->timestamp = tmp_frame.timestamp;
189
 
        frame->size = tmp_frame.size;
190
 
        if (tmp_frame.size && tmp_frame.buf == sport->get_buf)
191
 
            pj_memcpy(frame->buf, tmp_frame.buf, tmp_frame.size);
192
 
        return PJ_SUCCESS;
193
 
    }
194
 
 
195
 
    if (s_afd->channel_count == 1) {
196
 
        pjmedia_convert_channel_nto1((pj_int16_t*)frame->buf,
197
 
                                     (const pj_int16_t*)tmp_frame.buf,
198
 
                                     dn_afd->channel_count,
199
 
                                     PJMEDIA_AFD_SPF(s_afd),
200
 
                                     (sport->options & PJMEDIA_STEREO_MIX), 0);
201
 
    } else {
202
 
        pjmedia_convert_channel_1ton((pj_int16_t*)frame->buf,
203
 
                                     (const pj_int16_t*)tmp_frame.buf,
204
 
                                     s_afd->channel_count,
205
 
                                     PJMEDIA_AFD_SPF(dn_afd),
206
 
                                     sport->options);
207
 
    }
208
 
 
209
 
    frame->size = PJMEDIA_AFD_AVG_FSZ(s_afd);
210
 
    frame->type = PJMEDIA_FRAME_TYPE_AUDIO;
211
 
 
212
 
    return PJ_SUCCESS;
213
 
}
214
 
 
215
 
 
216
 
static pj_status_t stereo_destroy(pjmedia_port *this_port)
217
 
{
218
 
    struct stereo_port *sport = (struct stereo_port*) this_port;
219
 
 
220
 
    if ((sport->options & PJMEDIA_STEREO_DONT_DESTROY_DN)==0) {
221
 
        pjmedia_port_destroy(sport->dn_port);
222
 
        sport->dn_port = NULL;
223
 
    }
224
 
 
225
 
    return PJ_SUCCESS;
226
 
}