Tristan Matthews | 0a329cc | 2013-07-17 13:20:14 -0400 | [diff] [blame] | 1 | /* $Id$ */ |
| 2 | /* |
| 3 | * Copyright (C) 2008-2011 Teluu Inc. (http://www.teluu.com) |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License as published by |
| 7 | * the Free Software Foundation; either version 2 of the License, or |
| 8 | * (at your option) any later version. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License |
| 16 | * along with this program; if not, write to the Free Software |
| 17 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 18 | */ |
| 19 | |
| 20 | /* |
| 21 | * This is implementation of legacy sound device API, for applications |
| 22 | * that still use the old/deprecated sound device API. This implementation |
| 23 | * uses the new Audio Device API. |
| 24 | * |
| 25 | * Please see http://trac.pjsip.org/repos/wiki/Audio_Dev_API for more |
| 26 | * information. |
| 27 | */ |
| 28 | |
| 29 | #include <pjmedia/sound.h> |
| 30 | #include <pjmedia-audiodev/errno.h> |
| 31 | #include <pj/assert.h> |
| 32 | |
| 33 | #if PJMEDIA_HAS_LEGACY_SOUND_API |
| 34 | |
| 35 | static struct legacy_subsys |
| 36 | { |
| 37 | pjmedia_snd_dev_info info[4]; |
| 38 | unsigned info_counter; |
| 39 | unsigned user_rec_latency; |
| 40 | unsigned user_play_latency; |
| 41 | } g_sys; |
| 42 | |
| 43 | struct pjmedia_snd_stream |
| 44 | { |
| 45 | pj_pool_t *pool; |
| 46 | pjmedia_aud_stream *aud_strm; |
| 47 | pjmedia_snd_rec_cb user_rec_cb; |
| 48 | pjmedia_snd_play_cb user_play_cb; |
| 49 | void *user_user_data; |
| 50 | }; |
| 51 | |
| 52 | PJ_DEF(pj_status_t) pjmedia_snd_init(pj_pool_factory *factory) |
| 53 | { |
| 54 | return pjmedia_aud_subsys_init(factory); |
| 55 | } |
| 56 | |
| 57 | PJ_DEF(pj_status_t) pjmedia_snd_deinit(void) |
| 58 | { |
| 59 | return pjmedia_aud_subsys_shutdown(); |
| 60 | } |
| 61 | |
| 62 | PJ_DEF(int) pjmedia_snd_get_dev_count(void) |
| 63 | { |
| 64 | return pjmedia_aud_dev_count(); |
| 65 | } |
| 66 | |
| 67 | PJ_DEF(const pjmedia_snd_dev_info*) pjmedia_snd_get_dev_info(unsigned index) |
| 68 | { |
| 69 | pjmedia_snd_dev_info *oi = &g_sys.info[g_sys.info_counter]; |
| 70 | pjmedia_aud_dev_info di; |
| 71 | |
| 72 | g_sys.info_counter = (g_sys.info_counter+1) % PJ_ARRAY_SIZE(g_sys.info); |
| 73 | |
| 74 | if (pjmedia_aud_dev_get_info(index, &di) != PJ_SUCCESS) |
| 75 | return NULL; |
| 76 | |
| 77 | pj_bzero(oi, sizeof(*oi)); |
| 78 | pj_ansi_strncpy(oi->name, di.name, sizeof(oi->name)); |
| 79 | oi->name[sizeof(oi->name)-1] = '\0'; |
| 80 | oi->input_count = di.input_count; |
| 81 | oi->output_count = di.output_count; |
| 82 | oi->default_samples_per_sec = di.default_samples_per_sec; |
| 83 | |
| 84 | return oi; |
| 85 | } |
| 86 | |
| 87 | |
| 88 | static pj_status_t snd_play_cb(void *user_data, |
| 89 | pjmedia_frame *frame) |
| 90 | { |
| 91 | pjmedia_snd_stream *strm = (pjmedia_snd_stream*)user_data; |
| 92 | |
| 93 | frame->type = PJMEDIA_FRAME_TYPE_AUDIO; |
| 94 | return strm->user_play_cb(strm->user_user_data, |
| 95 | frame->timestamp.u32.lo, |
| 96 | frame->buf, |
| 97 | (unsigned)frame->size); |
| 98 | } |
| 99 | |
| 100 | static pj_status_t snd_rec_cb(void *user_data, |
| 101 | pjmedia_frame *frame) |
| 102 | { |
| 103 | pjmedia_snd_stream *strm = (pjmedia_snd_stream*)user_data; |
| 104 | return strm->user_rec_cb(strm->user_user_data, |
| 105 | frame->timestamp.u32.lo, |
| 106 | frame->buf, |
| 107 | (unsigned)frame->size); |
| 108 | } |
| 109 | |
| 110 | static pj_status_t open_stream( pjmedia_dir dir, |
| 111 | int rec_id, |
| 112 | int play_id, |
| 113 | unsigned clock_rate, |
| 114 | unsigned channel_count, |
| 115 | unsigned samples_per_frame, |
| 116 | unsigned bits_per_sample, |
| 117 | pjmedia_snd_rec_cb rec_cb, |
| 118 | pjmedia_snd_play_cb play_cb, |
| 119 | void *user_data, |
| 120 | pjmedia_snd_stream **p_snd_strm) |
| 121 | { |
| 122 | pj_pool_t *pool; |
| 123 | pjmedia_snd_stream *snd_strm; |
| 124 | pjmedia_aud_param param; |
| 125 | pj_status_t status; |
| 126 | |
| 127 | /* Initialize parameters */ |
| 128 | if (dir & PJMEDIA_DIR_CAPTURE) { |
| 129 | status = pjmedia_aud_dev_default_param(rec_id, ¶m); |
| 130 | } else { |
| 131 | status = pjmedia_aud_dev_default_param(play_id, ¶m); |
| 132 | } |
| 133 | if (status != PJ_SUCCESS) |
| 134 | return status; |
| 135 | |
| 136 | param.dir = dir; |
| 137 | param.rec_id = rec_id; |
| 138 | param.play_id = play_id; |
| 139 | param.clock_rate = clock_rate; |
| 140 | param.channel_count = channel_count; |
| 141 | param.samples_per_frame = samples_per_frame; |
| 142 | param.bits_per_sample = bits_per_sample; |
| 143 | |
| 144 | /* Latencies setting */ |
| 145 | if ((dir & PJMEDIA_DIR_CAPTURE) && g_sys.user_rec_latency) { |
| 146 | param.flags |= PJMEDIA_AUD_DEV_CAP_INPUT_LATENCY; |
| 147 | param.input_latency_ms = g_sys.user_rec_latency; |
| 148 | } |
| 149 | if ((dir & PJMEDIA_DIR_PLAYBACK) && g_sys.user_play_latency) { |
| 150 | param.flags |= PJMEDIA_AUD_DEV_CAP_OUTPUT_LATENCY; |
| 151 | param.output_latency_ms = g_sys.user_play_latency; |
| 152 | } |
| 153 | |
| 154 | /* Create sound wrapper */ |
| 155 | pool = pj_pool_create(pjmedia_aud_subsys_get_pool_factory(), |
| 156 | "legacy-snd", 512, 512, NULL); |
| 157 | snd_strm = PJ_POOL_ZALLOC_T(pool, pjmedia_snd_stream); |
| 158 | snd_strm->pool = pool; |
| 159 | snd_strm->user_rec_cb = rec_cb; |
| 160 | snd_strm->user_play_cb = play_cb; |
| 161 | snd_strm->user_user_data = user_data; |
| 162 | |
| 163 | /* Create the stream */ |
| 164 | status = pjmedia_aud_stream_create(¶m, &snd_rec_cb, |
| 165 | &snd_play_cb, snd_strm, |
| 166 | &snd_strm->aud_strm); |
| 167 | if (status != PJ_SUCCESS) { |
| 168 | pj_pool_release(pool); |
| 169 | return status; |
| 170 | } |
| 171 | |
| 172 | *p_snd_strm = snd_strm; |
| 173 | return PJ_SUCCESS; |
| 174 | } |
| 175 | |
| 176 | PJ_DEF(pj_status_t) pjmedia_snd_open_rec( int index, |
| 177 | unsigned clock_rate, |
| 178 | unsigned channel_count, |
| 179 | unsigned samples_per_frame, |
| 180 | unsigned bits_per_sample, |
| 181 | pjmedia_snd_rec_cb rec_cb, |
| 182 | void *user_data, |
| 183 | pjmedia_snd_stream **p_snd_strm) |
| 184 | { |
| 185 | return open_stream(PJMEDIA_DIR_CAPTURE, index, PJMEDIA_AUD_INVALID_DEV, |
| 186 | clock_rate, channel_count, samples_per_frame, |
| 187 | bits_per_sample, rec_cb, NULL, |
| 188 | user_data, p_snd_strm); |
| 189 | } |
| 190 | |
| 191 | PJ_DEF(pj_status_t) pjmedia_snd_open_player( int index, |
| 192 | unsigned clock_rate, |
| 193 | unsigned channel_count, |
| 194 | unsigned samples_per_frame, |
| 195 | unsigned bits_per_sample, |
| 196 | pjmedia_snd_play_cb play_cb, |
| 197 | void *user_data, |
| 198 | pjmedia_snd_stream **p_snd_strm ) |
| 199 | { |
| 200 | return open_stream(PJMEDIA_DIR_PLAYBACK, PJMEDIA_AUD_INVALID_DEV, index, |
| 201 | clock_rate, channel_count, samples_per_frame, |
| 202 | bits_per_sample, NULL, play_cb, |
| 203 | user_data, p_snd_strm); |
| 204 | } |
| 205 | |
| 206 | PJ_DEF(pj_status_t) pjmedia_snd_open( int rec_id, |
| 207 | int play_id, |
| 208 | unsigned clock_rate, |
| 209 | unsigned channel_count, |
| 210 | unsigned samples_per_frame, |
| 211 | unsigned bits_per_sample, |
| 212 | pjmedia_snd_rec_cb rec_cb, |
| 213 | pjmedia_snd_play_cb play_cb, |
| 214 | void *user_data, |
| 215 | pjmedia_snd_stream **p_snd_strm) |
| 216 | { |
| 217 | return open_stream(PJMEDIA_DIR_CAPTURE_PLAYBACK, rec_id, play_id, |
| 218 | clock_rate, channel_count, samples_per_frame, |
| 219 | bits_per_sample, rec_cb, play_cb, |
| 220 | user_data, p_snd_strm); |
| 221 | } |
| 222 | |
| 223 | PJ_DEF(pj_status_t) pjmedia_snd_stream_start(pjmedia_snd_stream *stream) |
| 224 | { |
| 225 | return pjmedia_aud_stream_start(stream->aud_strm); |
| 226 | } |
| 227 | |
| 228 | PJ_DEF(pj_status_t) pjmedia_snd_stream_stop(pjmedia_snd_stream *stream) |
| 229 | { |
| 230 | return pjmedia_aud_stream_stop(stream->aud_strm); |
| 231 | } |
| 232 | |
| 233 | PJ_DEF(pj_status_t) pjmedia_snd_stream_get_info(pjmedia_snd_stream *strm, |
| 234 | pjmedia_snd_stream_info *pi) |
| 235 | { |
| 236 | pjmedia_aud_param param; |
| 237 | pj_status_t status; |
| 238 | |
| 239 | status = pjmedia_aud_stream_get_param(strm->aud_strm, ¶m); |
| 240 | if (status != PJ_SUCCESS) |
| 241 | return status; |
| 242 | |
| 243 | pj_bzero(pi, sizeof(*pi)); |
| 244 | pi->dir = param.dir; |
| 245 | pi->play_id = param.play_id; |
| 246 | pi->rec_id = param.rec_id; |
| 247 | pi->clock_rate = param.clock_rate; |
| 248 | pi->channel_count = param.channel_count; |
| 249 | pi->samples_per_frame = param.samples_per_frame; |
| 250 | pi->bits_per_sample = param.bits_per_sample; |
| 251 | |
| 252 | if (param.flags & PJMEDIA_AUD_DEV_CAP_INPUT_LATENCY) { |
| 253 | pi->rec_latency = param.input_latency_ms; |
| 254 | } |
| 255 | if (param.flags & PJMEDIA_AUD_DEV_CAP_OUTPUT_LATENCY) { |
| 256 | pi->play_latency = param.output_latency_ms; |
| 257 | } |
| 258 | |
| 259 | return PJ_SUCCESS; |
| 260 | } |
| 261 | |
| 262 | |
| 263 | PJ_DEF(pj_status_t) pjmedia_snd_stream_close(pjmedia_snd_stream *stream) |
| 264 | { |
| 265 | pj_status_t status; |
| 266 | |
| 267 | status = pjmedia_aud_stream_destroy(stream->aud_strm); |
| 268 | if (status != PJ_SUCCESS) |
| 269 | return status; |
| 270 | |
| 271 | pj_pool_release(stream->pool); |
| 272 | return PJ_SUCCESS; |
| 273 | } |
| 274 | |
| 275 | PJ_DEF(pj_status_t) pjmedia_snd_set_latency(unsigned input_latency, |
| 276 | unsigned output_latency) |
| 277 | { |
| 278 | g_sys.user_rec_latency = input_latency; |
| 279 | g_sys.user_play_latency = output_latency; |
| 280 | return PJ_SUCCESS; |
| 281 | } |
| 282 | |
| 283 | #endif /* PJMEDIA_HAS_LEGACY_SOUND_API */ |
| 284 | |