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Viewing changes to daemon/libs/pjproject-2.1.0/pjmedia/src/pjmedia/resample_port.c

  • Committer: Package Import Robot
  • Author(s): Mark Purcell
  • Date: 2014-01-28 18:23:36 UTC
  • mfrom: (1.1.11)
  • mto: This revision was merged to the branch mainline in revision 24.
  • Revision ID: package-import@ubuntu.com-20140128182336-3xenud1kbnwmf3mz
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-2.1.0/pjmedia/src/pjmedia/resample_port.c
 
1
/* $Id: resample_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
#include <pjmedia/resample.h>
 
21
#include <pjmedia/errno.h>
 
22
#include <pj/assert.h>
 
23
#include <pj/pool.h>
 
24
#include <pj/string.h>
 
25
 
 
26
 
 
27
#define BYTES_PER_SAMPLE        2
 
28
#define SIGNATURE               PJMEDIA_SIG_PORT_RESAMPLE
 
29
 
 
30
 
 
31
struct resample_port
 
32
{
 
33
    pjmedia_port         base;
 
34
    pjmedia_port        *dn_port;
 
35
    unsigned             options;
 
36
    pjmedia_resample    *resample_get;
 
37
    pjmedia_resample    *resample_put;
 
38
    pj_int16_t          *get_buf;
 
39
    pj_int16_t          *put_buf;
 
40
};
 
41
 
 
42
 
 
43
 
 
44
static pj_status_t resample_put_frame(pjmedia_port *this_port,
 
45
                                      pjmedia_frame *frame);
 
46
static pj_status_t resample_get_frame(pjmedia_port *this_port, 
 
47
                                      pjmedia_frame *frame);
 
48
static pj_status_t resample_destroy(pjmedia_port *this_port);
 
49
 
 
50
 
 
51
 
 
52
PJ_DEF(pj_status_t) pjmedia_resample_port_create( pj_pool_t *pool,
 
53
                                                  pjmedia_port *dn_port,
 
54
                                                  unsigned clock_rate,
 
55
                                                  unsigned opt,
 
56
                                                  pjmedia_port **p_port  )
 
57
{
 
58
    const pj_str_t name = pj_str("resample");
 
59
    struct resample_port *rport;
 
60
    pjmedia_audio_format_detail *d_afd, *r_afd;
 
61
    pj_status_t status;
 
62
 
 
63
    /* Validate arguments. */
 
64
    PJ_ASSERT_RETURN(pool && dn_port && clock_rate && p_port, PJ_EINVAL);
 
65
 
 
66
    /* Only supports 16bit samples per frame */
 
67
    PJ_ASSERT_RETURN(PJMEDIA_PIA_BITS(&dn_port->info) == 16, PJMEDIA_ENCBITS);
 
68
 
 
69
    d_afd = pjmedia_format_get_audio_format_detail(&dn_port->info.fmt, 1);
 
70
 
 
71
    /* Create and initialize port. */
 
72
    rport = PJ_POOL_ZALLOC_T(pool, struct resample_port);
 
73
    PJ_ASSERT_RETURN(rport != NULL, PJ_ENOMEM);
 
74
 
 
75
    pjmedia_port_info_init(&rport->base.info, &name, SIGNATURE, clock_rate,
 
76
                           d_afd->channel_count, BYTES_PER_SAMPLE * 8,
 
77
                           clock_rate * d_afd->frame_time_usec / 1000000);
 
78
 
 
79
    rport->dn_port = dn_port;
 
80
    rport->options = opt;
 
81
 
 
82
    r_afd = pjmedia_format_get_audio_format_detail(&rport->base.info.fmt, 1);
 
83
 
 
84
    /* Create buffers. 
 
85
     * We need separate buffer for get_frame() and put_frame() since
 
86
     * both functions may run simultaneously.
 
87
     */
 
88
    rport->get_buf = (pj_int16_t*)
 
89
                     pj_pool_alloc(pool, PJMEDIA_PIA_AVG_FSZ(&dn_port->info));
 
90
    PJ_ASSERT_RETURN(rport->get_buf != NULL, PJ_ENOMEM);
 
91
 
 
92
    rport->put_buf = (pj_int16_t*)
 
93
                     pj_pool_alloc(pool, PJMEDIA_PIA_AVG_FSZ(&dn_port->info));
 
94
    PJ_ASSERT_RETURN(rport->put_buf != NULL, PJ_ENOMEM);
 
95
 
 
96
 
 
97
    /* Create "get_frame" resample */
 
98
    status = pjmedia_resample_create(pool, 
 
99
                                     (opt&PJMEDIA_RESAMPLE_USE_LINEAR)==0,
 
100
                                     (opt&PJMEDIA_RESAMPLE_USE_SMALL_FILTER)==0,
 
101
                                     d_afd->channel_count,
 
102
                                     d_afd->clock_rate,
 
103
                                     r_afd->clock_rate,
 
104
                                     PJMEDIA_PIA_SPF(&dn_port->info),
 
105
                                     &rport->resample_get);
 
106
    if (status != PJ_SUCCESS)
 
107
        return status;
 
108
 
 
109
    /* Create "put_frame" resample */
 
110
    status = pjmedia_resample_create(pool, 
 
111
                                     (opt&PJMEDIA_RESAMPLE_USE_LINEAR)==0, 
 
112
                                     (opt&PJMEDIA_RESAMPLE_USE_SMALL_FILTER)==0,
 
113
                                     d_afd->channel_count,
 
114
                                     r_afd->clock_rate,
 
115
                                     d_afd->clock_rate,
 
116
                                     PJMEDIA_PIA_SPF(&rport->base.info),
 
117
                                     &rport->resample_put);
 
118
 
 
119
    /* Media port interface */
 
120
    rport->base.get_frame = &resample_get_frame;
 
121
    rport->base.put_frame = &resample_put_frame;
 
122
    rport->base.on_destroy = &resample_destroy;
 
123
 
 
124
 
 
125
    /* Done */
 
126
    *p_port = &rport->base;
 
127
 
 
128
    return PJ_SUCCESS;
 
129
}
 
130
 
 
131
 
 
132
 
 
133
static pj_status_t resample_put_frame(pjmedia_port *this_port,
 
134
                                      pjmedia_frame *frame)
 
135
{
 
136
    struct resample_port *rport = (struct resample_port*) this_port;
 
137
    pjmedia_frame downstream_frame;
 
138
 
 
139
    /* Return if we don't have downstream port. */
 
140
    if (rport->dn_port == NULL) {
 
141
        return PJ_SUCCESS;
 
142
    }
 
143
 
 
144
    if (frame->type == PJMEDIA_FRAME_TYPE_AUDIO) {
 
145
        pjmedia_resample_run( rport->resample_put, 
 
146
                              (const pj_int16_t*) frame->buf, 
 
147
                              rport->put_buf);
 
148
 
 
149
        downstream_frame.buf = rport->put_buf;
 
150
        downstream_frame.size = PJMEDIA_PIA_AVG_FSZ(&rport->dn_port->info);
 
151
    } else {
 
152
        downstream_frame.buf = frame->buf;
 
153
        downstream_frame.size = frame->size;
 
154
    }
 
155
 
 
156
    downstream_frame.type = frame->type;
 
157
    downstream_frame.timestamp.u64 = frame->timestamp.u64;
 
158
 
 
159
    return pjmedia_port_put_frame( rport->dn_port, &downstream_frame );
 
160
}
 
161
 
 
162
 
 
163
 
 
164
static pj_status_t resample_get_frame(pjmedia_port *this_port, 
 
165
                                      pjmedia_frame *frame)
 
166
{
 
167
    struct resample_port *rport = (struct resample_port*) this_port;
 
168
    pjmedia_frame tmp_frame;
 
169
    pj_status_t status;
 
170
 
 
171
    /* Return silence if we don't have downstream port */
 
172
    if (rport->dn_port == NULL) {
 
173
        pj_bzero(frame->buf, frame->size);
 
174
        return PJ_SUCCESS;
 
175
    }
 
176
 
 
177
    tmp_frame.buf = rport->get_buf;
 
178
    tmp_frame.size = PJMEDIA_PIA_AVG_FSZ(&rport->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( rport->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
        /* Copy whatever returned as long as the buffer size is enough */
 
190
        frame->size = tmp_frame.size < PJMEDIA_PIA_AVG_FSZ(&rport->base.info) ?
 
191
                      tmp_frame.size : PJMEDIA_PIA_AVG_FSZ(&rport->base.info);
 
192
        if (tmp_frame.size) {
 
193
            pjmedia_copy_samples((pj_int16_t*)frame->buf, 
 
194
                                 (const pj_int16_t*)tmp_frame.buf, 
 
195
                                 frame->size >> 1);
 
196
        }
 
197
        return PJ_SUCCESS;
 
198
    }
 
199
 
 
200
    pjmedia_resample_run( rport->resample_get, 
 
201
                          (const pj_int16_t*) tmp_frame.buf, 
 
202
                          (pj_int16_t*) frame->buf);
 
203
 
 
204
    frame->size = PJMEDIA_PIA_AVG_FSZ(&rport->base.info);
 
205
    frame->type = PJMEDIA_FRAME_TYPE_AUDIO;
 
206
 
 
207
    return PJ_SUCCESS;
 
208
}
 
209
 
 
210
 
 
211
static pj_status_t resample_destroy(pjmedia_port *this_port)
 
212
{
 
213
    struct resample_port *rport = (struct resample_port*) this_port;
 
214
 
 
215
    if ((rport->options & PJMEDIA_RESAMPLE_DONT_DESTROY_DN)==0) {
 
216
        pjmedia_port_destroy(rport->dn_port);
 
217
        rport->dn_port = NULL;
 
218
    }
 
219
 
 
220
    if (rport->resample_get) {
 
221
        pjmedia_resample_destroy(rport->resample_get);
 
222
        rport->resample_get = NULL;
 
223
    }
 
224
 
 
225
    if (rport->resample_put) {
 
226
        pjmedia_resample_destroy(rport->resample_put);
 
227
        rport->resample_put = NULL;
 
228
    }
 
229
 
 
230
    return PJ_SUCCESS;
 
231
}
 
232