| /* $Id: legacy_dev.c 3553 2011-05-05 06:14:19Z nanang $ */ |
| /* |
| * Copyright (C) 2008-2011 Teluu Inc. (http://www.teluu.com) |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program 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 General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| */ |
| #include <pjmedia-audiodev/audiodev_imp.h> |
| #include <pjmedia/sound.h> |
| #include <pj/assert.h> |
| |
| #if PJMEDIA_AUDIO_DEV_HAS_LEGACY_DEVICE |
| |
| #define THIS_FILE "legacy_dev.c" |
| |
| /* Legacy devices factory */ |
| struct legacy_factory |
| { |
| pjmedia_aud_dev_factory base; |
| pj_pool_t *pool; |
| pj_pool_factory *pf; |
| }; |
| |
| |
| struct legacy_stream |
| { |
| pjmedia_aud_stream base; |
| |
| pj_pool_t *pool; |
| pjmedia_aud_param param; |
| pjmedia_snd_stream *snd_strm; |
| pjmedia_aud_play_cb user_play_cb; |
| pjmedia_aud_rec_cb user_rec_cb; |
| void *user_user_data; |
| unsigned input_latency; |
| unsigned output_latency; |
| }; |
| |
| |
| /* Prototypes */ |
| static pj_status_t factory_init(pjmedia_aud_dev_factory *f); |
| static pj_status_t factory_destroy(pjmedia_aud_dev_factory *f); |
| static pj_status_t factory_refresh(pjmedia_aud_dev_factory *f); |
| static unsigned factory_get_dev_count(pjmedia_aud_dev_factory *f); |
| static pj_status_t factory_get_dev_info(pjmedia_aud_dev_factory *f, |
| unsigned index, |
| pjmedia_aud_dev_info *info); |
| static pj_status_t factory_default_param(pjmedia_aud_dev_factory *f, |
| unsigned index, |
| pjmedia_aud_param *param); |
| static pj_status_t factory_create_stream(pjmedia_aud_dev_factory *f, |
| const pjmedia_aud_param *param, |
| pjmedia_aud_rec_cb rec_cb, |
| pjmedia_aud_play_cb play_cb, |
| void *user_data, |
| pjmedia_aud_stream **p_aud_strm); |
| |
| static pj_status_t stream_get_param(pjmedia_aud_stream *strm, |
| pjmedia_aud_param *param); |
| static pj_status_t stream_get_cap(pjmedia_aud_stream *strm, |
| pjmedia_aud_dev_cap cap, |
| void *value); |
| static pj_status_t stream_set_cap(pjmedia_aud_stream *strm, |
| pjmedia_aud_dev_cap cap, |
| const void *value); |
| static pj_status_t stream_start(pjmedia_aud_stream *strm); |
| static pj_status_t stream_stop(pjmedia_aud_stream *strm); |
| static pj_status_t stream_destroy(pjmedia_aud_stream *strm); |
| |
| |
| /* Operations */ |
| static pjmedia_aud_dev_factory_op factory_op = |
| { |
| &factory_init, |
| &factory_destroy, |
| &factory_get_dev_count, |
| &factory_get_dev_info, |
| &factory_default_param, |
| &factory_create_stream, |
| &factory_refresh |
| }; |
| |
| static pjmedia_aud_stream_op stream_op = |
| { |
| &stream_get_param, |
| &stream_get_cap, |
| &stream_set_cap, |
| &stream_start, |
| &stream_stop, |
| &stream_destroy |
| }; |
| |
| |
| /**************************************************************************** |
| * Factory operations |
| */ |
| |
| /* |
| * Init legacy audio driver. |
| */ |
| pjmedia_aud_dev_factory* pjmedia_legacy_factory(pj_pool_factory *pf) |
| { |
| struct legacy_factory *f; |
| pj_pool_t *pool; |
| |
| pool = pj_pool_create(pf, "legacy-snd", 512, 512, NULL); |
| f = PJ_POOL_ZALLOC_T(pool, struct legacy_factory); |
| f->pf = pf; |
| f->pool = pool; |
| f->base.op = &factory_op; |
| |
| return &f->base; |
| } |
| |
| |
| /* API: init factory */ |
| static pj_status_t factory_init(pjmedia_aud_dev_factory *f) |
| { |
| struct legacy_factory *wf = (struct legacy_factory*)f; |
| |
| return pjmedia_snd_init(wf->pf); |
| } |
| |
| /* API: destroy factory */ |
| static pj_status_t factory_destroy(pjmedia_aud_dev_factory *f) |
| { |
| struct legacy_factory *wf = (struct legacy_factory*)f; |
| pj_status_t status; |
| |
| status = pjmedia_snd_deinit(); |
| |
| if (status == PJ_SUCCESS) { |
| pj_pool_t *pool = wf->pool; |
| wf->pool = NULL; |
| pj_pool_release(pool); |
| } |
| |
| return status; |
| } |
| |
| /* API: refresh the list of devices */ |
| static pj_status_t factory_refresh(pjmedia_aud_dev_factory *f) |
| { |
| PJ_UNUSED_ARG(f); |
| return PJ_ENOTSUP; |
| } |
| |
| /* API: get number of devices */ |
| static unsigned factory_get_dev_count(pjmedia_aud_dev_factory *f) |
| { |
| PJ_UNUSED_ARG(f); |
| return pjmedia_snd_get_dev_count(); |
| } |
| |
| /* API: get device info */ |
| static pj_status_t factory_get_dev_info(pjmedia_aud_dev_factory *f, |
| unsigned index, |
| pjmedia_aud_dev_info *info) |
| { |
| const pjmedia_snd_dev_info *si = |
| pjmedia_snd_get_dev_info(index);; |
| |
| PJ_UNUSED_ARG(f); |
| |
| if (si == NULL) |
| return PJMEDIA_EAUD_INVDEV; |
| |
| pj_bzero(info, sizeof(*info)); |
| pj_ansi_strncpy(info->name, si->name, sizeof(info->name)); |
| info->name[sizeof(info->name)-1] = '\0'; |
| info->input_count = si->input_count; |
| info->output_count = si->output_count; |
| info->default_samples_per_sec = si->default_samples_per_sec; |
| pj_ansi_strcpy(info->driver, "legacy"); |
| info->caps = PJMEDIA_AUD_DEV_CAP_INPUT_LATENCY | |
| PJMEDIA_AUD_DEV_CAP_OUTPUT_LATENCY; |
| |
| return PJ_SUCCESS; |
| } |
| |
| /* API: create default device parameter */ |
| static pj_status_t factory_default_param(pjmedia_aud_dev_factory *f, |
| unsigned index, |
| pjmedia_aud_param *param) |
| { |
| pjmedia_aud_dev_info di; |
| pj_status_t status; |
| |
| status = factory_get_dev_info(f, index, &di); |
| if (status != PJ_SUCCESS) |
| return status; |
| |
| pj_bzero(param, sizeof(*param)); |
| if (di.input_count && di.output_count) { |
| param->dir = PJMEDIA_DIR_CAPTURE_PLAYBACK; |
| param->rec_id = index; |
| param->play_id = index; |
| } else if (di.input_count) { |
| param->dir = PJMEDIA_DIR_CAPTURE; |
| param->rec_id = index; |
| param->play_id = PJMEDIA_AUD_INVALID_DEV; |
| } else if (di.output_count) { |
| param->dir = PJMEDIA_DIR_PLAYBACK; |
| param->play_id = index; |
| param->rec_id = PJMEDIA_AUD_INVALID_DEV; |
| } else { |
| return PJMEDIA_EAUD_INVDEV; |
| } |
| |
| param->clock_rate = di.default_samples_per_sec; |
| param->channel_count = 1; |
| param->samples_per_frame = di.default_samples_per_sec * 20 / 1000; |
| param->bits_per_sample = 16; |
| param->flags = di.caps; |
| param->input_latency_ms = PJMEDIA_SND_DEFAULT_REC_LATENCY; |
| param->output_latency_ms = PJMEDIA_SND_DEFAULT_PLAY_LATENCY; |
| |
| return PJ_SUCCESS; |
| } |
| |
| /* Callback from legacy sound device */ |
| static pj_status_t snd_play_cb(/* in */ void *user_data, |
| /* in */ pj_uint32_t timestamp, |
| /* out */ void *output, |
| /* out */ unsigned size) |
| { |
| struct legacy_stream *strm = (struct legacy_stream*)user_data; |
| pjmedia_frame frame; |
| pj_status_t status; |
| |
| frame.type = PJMEDIA_FRAME_TYPE_AUDIO; |
| frame.buf = output; |
| frame.size = size; |
| frame.timestamp.u64 = timestamp; |
| |
| status = strm->user_play_cb(strm->user_user_data, &frame); |
| if (status != PJ_SUCCESS) |
| return status; |
| |
| if (frame.type != PJMEDIA_FRAME_TYPE_AUDIO) { |
| pj_bzero(output, size); |
| } |
| |
| return PJ_SUCCESS; |
| } |
| |
| /* Callback from legacy sound device */ |
| static pj_status_t snd_rec_cb( /* in */ void *user_data, |
| /* in */ pj_uint32_t timestamp, |
| /* in */ void *input, |
| /* in*/ unsigned size) |
| { |
| struct legacy_stream *strm = (struct legacy_stream*)user_data; |
| pjmedia_frame frame; |
| |
| frame.type = PJMEDIA_FRAME_TYPE_AUDIO; |
| frame.buf = input; |
| frame.size = size; |
| frame.timestamp.u64 = timestamp; |
| |
| return strm->user_rec_cb(strm->user_user_data, &frame); |
| } |
| |
| /* API: create stream */ |
| static pj_status_t factory_create_stream(pjmedia_aud_dev_factory *f, |
| const pjmedia_aud_param *param, |
| pjmedia_aud_rec_cb rec_cb, |
| pjmedia_aud_play_cb play_cb, |
| void *user_data, |
| pjmedia_aud_stream **p_aud_strm) |
| { |
| struct legacy_factory *wf = (struct legacy_factory*)f; |
| pj_pool_t *pool; |
| struct legacy_stream *strm; |
| pj_status_t status; |
| |
| /* Initialize our stream data */ |
| pool = pj_pool_create(wf->pf, "legacy-snd", 512, 512, NULL); |
| strm = PJ_POOL_ZALLOC_T(pool, struct legacy_stream); |
| strm->pool = pool; |
| strm->user_rec_cb = rec_cb; |
| strm->user_play_cb = play_cb; |
| strm->user_user_data = user_data; |
| pj_memcpy(&strm->param, param, sizeof(*param)); |
| |
| /* Set the latency if wanted */ |
| if (param->dir==PJMEDIA_DIR_CAPTURE_PLAYBACK && |
| param->flags & (PJMEDIA_AUD_DEV_CAP_INPUT_LATENCY | |
| PJMEDIA_AUD_DEV_CAP_OUTPUT_LATENCY)) |
| { |
| PJ_ASSERT_RETURN(param->input_latency_ms && |
| param->output_latency_ms, |
| PJMEDIA_EAUD_BADLATENCY); |
| |
| strm->input_latency = param->input_latency_ms; |
| strm->output_latency = param->output_latency_ms; |
| |
| status = pjmedia_snd_set_latency(param->input_latency_ms, |
| param->output_latency_ms); |
| if (status != PJ_SUCCESS) { |
| pj_pool_release(pool); |
| return status; |
| } |
| } |
| |
| /* Open the stream */ |
| if (param->dir == PJMEDIA_DIR_CAPTURE) { |
| status = pjmedia_snd_open_rec(param->rec_id, |
| param->clock_rate, |
| param->channel_count, |
| param->samples_per_frame, |
| param->bits_per_sample, |
| &snd_rec_cb, |
| strm, |
| &strm->snd_strm); |
| } else if (param->dir == PJMEDIA_DIR_PLAYBACK) { |
| status = pjmedia_snd_open_player(param->play_id, |
| param->clock_rate, |
| param->channel_count, |
| param->samples_per_frame, |
| param->bits_per_sample, |
| &snd_play_cb, |
| strm, |
| &strm->snd_strm); |
| |
| } else if (param->dir == PJMEDIA_DIR_CAPTURE_PLAYBACK) { |
| status = pjmedia_snd_open(param->rec_id, |
| param->play_id, |
| param->clock_rate, |
| param->channel_count, |
| param->samples_per_frame, |
| param->bits_per_sample, |
| &snd_rec_cb, |
| &snd_play_cb, |
| strm, |
| &strm->snd_strm); |
| } else { |
| pj_assert(!"Invalid direction!"); |
| return PJ_EINVAL; |
| } |
| |
| if (status != PJ_SUCCESS) { |
| pj_pool_release(pool); |
| return status; |
| } |
| |
| *p_aud_strm = &strm->base; |
| return PJ_SUCCESS; |
| } |
| |
| /* API: Get stream info. */ |
| static pj_status_t stream_get_param(pjmedia_aud_stream *s, |
| pjmedia_aud_param *pi) |
| { |
| struct legacy_stream *strm = (struct legacy_stream*)s; |
| PJ_ASSERT_RETURN(strm && pi, PJ_EINVAL); |
| |
| pj_memcpy(pi, &strm->param, sizeof(*pi)); |
| |
| if (strm->input_latency) { |
| pi->flags |= PJMEDIA_AUD_DEV_CAP_INPUT_LATENCY; |
| pi->input_latency_ms = strm->input_latency; |
| } else { |
| pi->flags &= ~PJMEDIA_AUD_DEV_CAP_INPUT_LATENCY; |
| } |
| |
| if (strm->output_latency) { |
| pi->flags |= PJMEDIA_AUD_DEV_CAP_OUTPUT_LATENCY; |
| pi->output_latency_ms = strm->output_latency; |
| } else { |
| pi->flags &= ~PJMEDIA_AUD_DEV_CAP_OUTPUT_LATENCY; |
| } |
| |
| return PJ_SUCCESS; |
| } |
| |
| /* API: get capability */ |
| static pj_status_t stream_get_cap(pjmedia_aud_stream *s, |
| pjmedia_aud_dev_cap cap, |
| void *pval) |
| { |
| struct legacy_stream *strm = (struct legacy_stream*)s; |
| |
| PJ_ASSERT_RETURN(strm && pval, PJ_EINVAL); |
| |
| if (cap==PJMEDIA_AUD_DEV_CAP_INPUT_LATENCY && |
| (strm->param.dir & PJMEDIA_DIR_CAPTURE)) |
| { |
| /* Recording latency */ |
| if (strm->input_latency) { |
| *(unsigned*)pval = strm->input_latency; |
| return PJ_SUCCESS; |
| } else { |
| return PJMEDIA_EAUD_INVCAP; |
| } |
| |
| } else if (cap==PJMEDIA_AUD_DEV_CAP_OUTPUT_LATENCY && |
| (strm->param.dir & PJMEDIA_DIR_PLAYBACK)) |
| { |
| /* Playback latency */ |
| if (strm->output_latency) { |
| *(unsigned*)pval = strm->output_latency; |
| return PJ_SUCCESS; |
| } else { |
| return PJMEDIA_EAUD_INVCAP; |
| } |
| } else { |
| return PJMEDIA_EAUD_INVCAP; |
| } |
| } |
| |
| /* API: set capability */ |
| static pj_status_t stream_set_cap(pjmedia_aud_stream *s, |
| pjmedia_aud_dev_cap cap, |
| const void *pval) |
| { |
| PJ_UNUSED_ARG(s); |
| PJ_UNUSED_ARG(cap); |
| PJ_UNUSED_ARG(pval); |
| return PJMEDIA_EAUD_INVCAP; |
| } |
| |
| /* API: Start stream. */ |
| static pj_status_t stream_start(pjmedia_aud_stream *s) |
| { |
| struct legacy_stream *strm = (struct legacy_stream*)s; |
| return pjmedia_snd_stream_start(strm->snd_strm); |
| } |
| |
| /* API: Stop stream. */ |
| static pj_status_t stream_stop(pjmedia_aud_stream *s) |
| { |
| struct legacy_stream *strm = (struct legacy_stream*)s; |
| return pjmedia_snd_stream_stop(strm->snd_strm); |
| } |
| |
| |
| /* API: Destroy stream. */ |
| static pj_status_t stream_destroy(pjmedia_aud_stream *s) |
| { |
| struct legacy_stream *strm = (struct legacy_stream*)s; |
| pj_status_t status; |
| |
| status = pjmedia_snd_stream_close(strm->snd_strm); |
| |
| if (status == PJ_SUCCESS) { |
| pj_pool_t *pool = strm->pool; |
| |
| strm->pool = NULL; |
| pj_pool_release(pool); |
| } |
| |
| return status; |
| } |
| |
| #endif /* PJMEDIA_AUDIO_DEV_HAS_LEGACY_DEVICE */ |
| |