diff options
Diffstat (limited to 'stream/ai_alsa1x.c')
-rw-r--r-- | stream/ai_alsa1x.c | 199 |
1 files changed, 0 insertions, 199 deletions
diff --git a/stream/ai_alsa1x.c b/stream/ai_alsa1x.c deleted file mode 100644 index 8f2b774faf..0000000000 --- a/stream/ai_alsa1x.c +++ /dev/null @@ -1,199 +0,0 @@ -/* - * This file is part of mpv. - * - * mpv 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. - * - * mpv 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 mpv. If not, see <http://www.gnu.org/licenses/>. - */ - -#include <stdio.h> -#include <stdlib.h> -#include <sys/time.h> - -#include "config.h" - -#include <alsa/asoundlib.h> -#include "audio_in.h" -#include "common/msg.h" - -int ai_alsa_setup(audio_in_t *ai) -{ - snd_pcm_hw_params_t *params; - snd_pcm_sw_params_t *swparams; - snd_pcm_uframes_t buffer_size, period_size; - int err; - int dir; - unsigned int rate; - - snd_pcm_hw_params_alloca(¶ms); - snd_pcm_sw_params_alloca(&swparams); - - err = snd_pcm_hw_params_any(ai->alsa.handle, params); - if (err < 0) { - MP_ERR(ai, "Broken configuration for this PCM: no configurations available.\n"); - return -1; - } - - err = snd_pcm_hw_params_set_access(ai->alsa.handle, params, - SND_PCM_ACCESS_RW_INTERLEAVED); - if (err < 0) { - MP_ERR(ai, "Access type not available.\n"); - return -1; - } - - err = snd_pcm_hw_params_set_format(ai->alsa.handle, params, SND_PCM_FORMAT_S16); - if (err < 0) { - MP_ERR(ai, "Sample format not available.\n"); - return -1; - } - - err = snd_pcm_hw_params_set_channels(ai->alsa.handle, params, ai->req_channels); - if (err < 0) { - snd_pcm_hw_params_get_channels(params, &ai->channels); - MP_ERR(ai, "Channel count not available - reverting to default: %d\n", - ai->channels); - } else { - ai->channels = ai->req_channels; - } - - dir = 0; - rate = ai->req_samplerate; - err = snd_pcm_hw_params_set_rate_near(ai->alsa.handle, params, &rate, &dir); - if (err < 0) { - MP_ERR(ai, "Cannot set samplerate.\n"); - } - ai->samplerate = rate; - - dir = 0; - ai->alsa.buffer_time = 1000000; - err = snd_pcm_hw_params_set_buffer_time_near(ai->alsa.handle, params, - &ai->alsa.buffer_time, &dir); - if (err < 0) { - MP_ERR(ai, "Cannot set buffer time.\n"); - } - - dir = 0; - ai->alsa.period_time = ai->alsa.buffer_time / 4; - err = snd_pcm_hw_params_set_period_time_near(ai->alsa.handle, params, - &ai->alsa.period_time, &dir); - if (err < 0) { - MP_ERR(ai, "Cannot set period time.\n"); - } - - err = snd_pcm_hw_params(ai->alsa.handle, params); - if (err < 0) { - MP_ERR(ai, "Unable to install hardware parameters: %s", snd_strerror(err)); - snd_pcm_hw_params_dump(params, ai->alsa.log); - return -1; - } - - dir = -1; - snd_pcm_hw_params_get_period_size(params, &period_size, &dir); - snd_pcm_hw_params_get_buffer_size(params, &buffer_size); - ai->alsa.chunk_size = period_size; - if (period_size == buffer_size) { - MP_ERR(ai, "Can't use period equal to buffer size (%u == %lu)\n", ai->alsa.chunk_size, (long)buffer_size); - return -1; - } - - snd_pcm_sw_params_current(ai->alsa.handle, swparams); - err = snd_pcm_sw_params_set_avail_min(ai->alsa.handle, swparams, ai->alsa.chunk_size); - - err = snd_pcm_sw_params_set_start_threshold(ai->alsa.handle, swparams, 0); - err = snd_pcm_sw_params_set_stop_threshold(ai->alsa.handle, swparams, buffer_size); - - if (snd_pcm_sw_params(ai->alsa.handle, swparams) < 0) { - MP_ERR(ai, "Unable to install software parameters:\n"); - snd_pcm_sw_params_dump(swparams, ai->alsa.log); - return -1; - } - - if (mp_msg_test(ai->log, MSGL_V)) { - snd_pcm_dump(ai->alsa.handle, ai->alsa.log); - } - - ai->alsa.bits_per_sample = snd_pcm_format_physical_width(SND_PCM_FORMAT_S16); - ai->alsa.bits_per_frame = ai->alsa.bits_per_sample * ai->channels; - ai->blocksize = ai->alsa.chunk_size * ai->alsa.bits_per_frame / 8; - ai->samplesize = ai->alsa.bits_per_sample; - ai->bytes_per_sample = ai->alsa.bits_per_sample/8; - - return 0; -} - -int ai_alsa_init(audio_in_t *ai) -{ - int err; - - const char *device = ai->alsa.device; - if (!device) - device = "default"; - - err = snd_pcm_open(&ai->alsa.handle, device, SND_PCM_STREAM_CAPTURE, 0); - if (err < 0) { - MP_ERR(ai, "Error opening audio: %s\n", snd_strerror(err)); - return -1; - } - - err = snd_output_stdio_attach(&ai->alsa.log, stderr, 0); - - if (err < 0) { - return -1; - } - - err = ai_alsa_setup(ai); - - return err; -} - -#ifndef timersub -#define timersub(a, b, result) \ -do { \ - (result)->tv_sec = (a)->tv_sec - (b)->tv_sec; \ - (result)->tv_usec = (a)->tv_usec - (b)->tv_usec; \ - if ((result)->tv_usec < 0) { \ - --(result)->tv_sec; \ - (result)->tv_usec += 1000000; \ - } \ -} while (0) -#endif - -int ai_alsa_xrun(audio_in_t *ai) -{ - snd_pcm_status_t *status; - int res; - - snd_pcm_status_alloca(&status); - if ((res = snd_pcm_status(ai->alsa.handle, status))<0) { - MP_ERR(ai, "ALSA status error: %s", snd_strerror(res)); - return -1; - } - if (snd_pcm_status_get_state(status) == SND_PCM_STATE_XRUN) { - struct timeval now, diff, tstamp; - gettimeofday(&now, 0); - snd_pcm_status_get_trigger_tstamp(status, &tstamp); - timersub(&now, &tstamp, &diff); - MP_ERR(ai, "ALSA xrun!!! (at least %.3f ms long)\n", - diff.tv_sec * 1000 + diff.tv_usec / 1000.0); - if (mp_msg_test(ai->log, MSGL_V)) { - MP_ERR(ai, "ALSA Status:\n"); - snd_pcm_status_dump(status, ai->alsa.log); - } - if ((res = snd_pcm_prepare(ai->alsa.handle))<0) { - MP_ERR(ai, "ALSA xrun: prepare error: %s", snd_strerror(res)); - return -1; - } - return 0; /* ok, data should be accepted again */ - } - MP_ERR(ai, "ALSA read/write error"); - return -1; -} |