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Searched refs:period_size (Results 1 - 25 of 33) sorted by relevance

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/third_party/alsa-lib/src/pcm/
H A Dpcm_rate.c230 * for best period_size, we should prefer situation when in snd_pcm_rate_hw_refine_cchange()
231 * (buffer_size / period_size) * period_size == buffer_size in snd_pcm_rate_hw_refine_cchange()
234 snd_interval_t *period_size; in snd_pcm_rate_hw_refine_cchange() local
235 period_size = (snd_interval_t *)snd_pcm_hw_param_get_interval(params, SND_PCM_HW_PARAM_PERIOD_SIZE); in snd_pcm_rate_hw_refine_cchange()
236 if (!snd_interval_checkempty(period_size) && in snd_pcm_rate_hw_refine_cchange()
237 period_size->openmin && period_size->openmax && in snd_pcm_rate_hw_refine_cchange()
238 period_size->min + 1 == period_size in snd_pcm_rate_hw_refine_cchange()
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H A Dpcm_rate_linear.c365 rate->pitch = (((uint64_t)info->out.period_size * LINEAR_DIV) + in linear_adjust_pitch()
366 (info->in.period_size/2) ) / info->in.period_size; in linear_adjust_pitch()
368 cframes = input_frames(rate, info->out.period_size); in linear_adjust_pitch()
369 while (cframes != info->in.period_size) { in linear_adjust_pitch()
371 if (cframes > info->in.period_size) in linear_adjust_pitch()
375 cframes_new = input_frames(rate, info->out.period_size); in linear_adjust_pitch()
376 if ((cframes > info->in.period_size && cframes_new < info->in.period_size) || in linear_adjust_pitch()
377 (cframes < info->in.period_size in linear_adjust_pitch()
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H A Dpcm_simple.c119 err = snd_pcm_sw_params_set_start_threshold(pcm, sw_params, (pcm->buffer_size / pcm->period_size) * pcm->period_size); in set_sw_params()
122 err = snd_pcm_sw_params_set_avail_min(pcm, sw_params, pcm->period_size); in set_sw_params()
279 * \param period_size Pointer to store the current period size
287 snd_pcm_uframes_t *period_size) in snd_spcm_init_get_params()
296 if (period_size) in snd_spcm_init_get_params()
297 *period_size = pcm->period_size; in snd_spcm_init_get_params()
284 snd_spcm_init_get_params(snd_pcm_t *pcm, unsigned int *rate, snd_pcm_uframes_t *buffer_size, snd_pcm_uframes_t *period_size) snd_spcm_init_get_params() argument
H A Dpcm_direct.c945 &dshare->shmptr->hw.period_size);
967 snd_interval_t period_size = dshare->shmptr->hw.period_size; local
981 if (dshare->shmptr->hw.buffer_size.max / 2 > period_size.max) {
982 period_size.max = dshare->shmptr->hw.buffer_size.max / 2;
983 period_size.openmax = dshare->shmptr->hw.buffer_size.openmax;
992 &period_size);
1164 COPY_SLAVE(period_size);
1303 } else if (params->period_size > 0) {
1305 &hw_params, (snd_pcm_uframes_t *)&params->period_size,
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H A Dpcm_direct.h71 snd_pcm_sframes_t period_size; member
87 snd_interval_t period_size; member
98 unsigned int period_size; member
H A Dpcm_hw.c762 if (pcm->period_size == 0) in snd_pcm_hw_drain()
772 if ((pcm->boundary % pcm->period_size) == 0) { in snd_pcm_hw_drain()
773 silence_size = pcm->period_size - (*pcm->appl.ptr % pcm->period_size); in snd_pcm_hw_drain()
774 if (silence_size == pcm->period_size) in snd_pcm_hw_drain()
781 silence_size = pcm->period_size; in snd_pcm_hw_drain()
H A Dpcm_share.c392 hw_ptr += spcm->period_size - 1; in snd_pcm_share_thread()
395 hw_ptr -= hw_ptr % spcm->period_size; in snd_pcm_share_thread()
446 hw_ptr += spcm->period_size - 1; in _snd_pcm_share_update()
449 hw_ptr -= hw_ptr % spcm->period_size; in _snd_pcm_share_update()
666 slave->safety_threshold += slave->pcm->period_size - 1; in snd_pcm_share_hw_params()
667 slave->safety_threshold -= slave->safety_threshold % slave->pcm->period_size; in snd_pcm_share_hw_params()
H A Dpcm.c917 snd_interval_set_value(&params->intervals[SND_PCM_HW_PARAM_PERIOD_SIZE - SND_PCM_HW_PARAM_FIRST_INTERVAL], pcm->period_size); in snd_pcm_hw_params_current()
2357 snd_output_printf(out, " period_size : %lu\n", pcm->period_size); in snd_pcm_dump_hw_setup()
2934 timeout = (pcm->period_size * 1000ULL) / pcm->rate; in __snd_pcm_wait_io_timeout()
6669 /* Fix avail_min if it's below period size. The period_size in snd_pcm_sw_params_set_avail_min()
6673 if (val < pcm->period_size) in snd_pcm_sw_params_set_avail_min()
6674 val = pcm->period_size; in snd_pcm_sw_params_set_avail_min()
7486 // we want to process frames in chunks (period_size)
7487 if (avail < period_size)
7489 size = period_size;
8796 snd_pcm_uframes_t buffer_size, period_size; snd_pcm_set_params() local
8974 snd_pcm_get_params(snd_pcm_t *pcm, snd_pcm_uframes_t *buffer_size, snd_pcm_uframes_t *period_size) snd_pcm_get_params() argument
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H A Dpcm_dsnoop.c253 dsnoop->hw_ptr %= pcm->period_size; in snd_pcm_dsnoop_reset()
720 period_size INT # in frames
814 params.period_size = psize; in _snd_pcm_dsnoop_open()
/third_party/alsa-utils/bat/
H A Dalsa.c36 snd_pcm_uframes_t period_size; member
81 snd_pcm_uframes_t period_size = 0; in set_snd_pcm_params() local
153 if (bat->buffer_size > 0 && bat->period_size == 0) in set_snd_pcm_params()
154 bat->period_size = bat->buffer_size / DIV_BUFFERSIZE; in set_snd_pcm_params()
170 &period_size, 0) < 0) { in set_snd_pcm_params()
174 (int) period_size, in set_snd_pcm_params()
179 bat->period_size = (int) period_size; in set_snd_pcm_params()
184 period_size = bat->period_size; in set_snd_pcm_params()
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H A Dtinyalsa.c62 if (bat->period_size > 0) in init_config()
63 config->period_size = bat->period_size; in init_config()
65 config->period_size = TINYALSA_PERIODSIZE; in init_config()
146 config->period_size, "Period size", "Hz"); in check_playback_params()
H A Dbat.c370 bat->period_size = 0; in set_defaults()
487 bat->period_size = err >= MIN_PERIODSIZE in parse_arguments()
690 bat.period_size += bat.rate / 1000; in main()
692 bat.period_size * DIV_BUFFERSIZE; in main()
694 /* terminate the test if period_size is in main()
696 if (bat.period_size > bat.rate * 0.2) in main()
H A Dcommon.h223 int period_size; /* period size in frames */ member
/third_party/alsa-lib/test/
H A Dpcm.c33 static snd_pcm_sframes_t period_size; variable
173 period_size = size; in set_hwparams()
195 err = snd_pcm_sw_params_set_start_threshold(handle, swparams, (buffer_size / period_size) * period_size); in set_swparams()
200 /* allow the transfer when at least period_size samples can be processed */ in set_swparams()
202 err = snd_pcm_sw_params_set_avail_min(handle, swparams, period_event ? buffer_size : period_size); in set_swparams()
263 generate_sine(areas, 0, period_size, &phase); in write_loop()
265 cptr = period_size; in write_loop()
346 generate_sine(areas, 0, period_size, &phase); in write_and_poll_loop()
348 cptr = period_size; in write_and_poll_loop()
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H A Dseq-sender.c9 int period_size = 1024; variable
50 err = snd_pcm_hw_params_set_period_size_near(phandle, params, period_size); in set_hwparams()
217 pbuf = calloc(1, period_size * 4); in event_sender()
251 if (snd_pcm_writei(phandle, pbuf, period_size) != period_size) { in event_sender()
H A Dlatency.c60 int period_size = 0; /* auto */ variable
171 if (period_size > 0) in setparams_bufsize()
172 periodsize = period_size; in setparams_bufsize()
641 period_size = err >= 32 && err < 200000 ? err : 0; in main()
/third_party/pulseaudio/src/modules/alsa/
H A Dalsa-util.h46 snd_pcm_uframes_t *period_size, /* modified at return */
65 snd_pcm_uframes_t *period_size, /* modified at return */
80 snd_pcm_uframes_t *period_size, /* modified at return */
94 snd_pcm_uframes_t *period_size, /* modified at return */
109 snd_pcm_uframes_t *period_size, /* modified at return */
H A Dalsa-util.c198 * selected fragment settings in *buffer_size and *period_size. Determine
203 snd_pcm_uframes_t *period_size, in pa_alsa_set_hw_params()
213 snd_pcm_uframes_t _period_size = period_size ? *period_size : 0; in pa_alsa_set_hw_params()
446 if (period_size) in pa_alsa_set_hw_params()
447 *period_size = _period_size; in pa_alsa_set_hw_params()
520 snd_pcm_uframes_t *period_size, in pa_alsa_open_by_device_id_auto()
558 period_size, in pa_alsa_open_by_device_id_auto()
585 period_size, in pa_alsa_open_by_device_id_auto()
609 period_size, in pa_alsa_open_by_device_id_auto()
200 pa_alsa_set_hw_params( snd_pcm_t *pcm_handle, pa_sample_spec *ss, snd_pcm_uframes_t *period_size, snd_pcm_uframes_t *buffer_size, snd_pcm_uframes_t tsched_size, bool *use_mmap, bool *use_tsched, bool require_exact_channel_number) pa_alsa_set_hw_params() argument
514 pa_alsa_open_by_device_id_auto( const char *dev_id, char **dev, pa_sample_spec *ss, pa_channel_map* map, int mode, snd_pcm_uframes_t *period_size, snd_pcm_uframes_t *buffer_size, snd_pcm_uframes_t tsched_size, bool *use_mmap, bool *use_tsched, pa_alsa_profile_set *ps, pa_alsa_mapping **mapping) pa_alsa_open_by_device_id_auto() argument
623 pa_alsa_open_by_device_id_mapping( const char *dev_id, char **dev, pa_sample_spec *ss, pa_channel_map* map, int mode, snd_pcm_uframes_t *period_size, snd_pcm_uframes_t *buffer_size, snd_pcm_uframes_t tsched_size, bool *use_mmap, bool *use_tsched, pa_alsa_mapping *m) pa_alsa_open_by_device_id_mapping() argument
675 pa_alsa_open_by_device_string( const char *device, char **dev, pa_sample_spec *ss, pa_channel_map* map, int mode, snd_pcm_uframes_t *period_size, snd_pcm_uframes_t *buffer_size, snd_pcm_uframes_t tsched_size, bool *use_mmap, bool *use_tsched, bool require_exact_channel_number) pa_alsa_open_by_device_string() argument
774 pa_alsa_open_by_template( char **template, const char *dev_id, char **dev, pa_sample_spec *ss, pa_channel_map* map, int mode, snd_pcm_uframes_t *period_size, snd_pcm_uframes_t *buffer_size, snd_pcm_uframes_t tsched_size, bool *use_mmap, bool *use_tsched, bool require_exact_channel_number) pa_alsa_open_by_template() argument
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/third_party/alsa-utils/speaker-test/
H A Dspeaker-test.c115 static snd_pcm_uframes_t period_size; variable
563 snd_pcm_hw_params_get_period_size(params, &period_size, NULL); in set_hwparams()
564 printf(_("was set period_size = %lu\n"),period_size); in set_hwparams()
566 if (2*period_size > buffer_size) { in set_hwparams()
591 /* allow the transfer when at least period_size frames can be processed */ in set_swparams()
592 err = snd_pcm_sw_params_set_avail_min(handle, swparams, period_size); in set_swparams()
911 int bufsize = snd_pcm_frames_to_bytes(handle, period_size); in write_loop()
932 do_generate(frames, channel, period_size, generate_pink_noise, &pink); in write_loop()
934 do_generate(frames, channel, period_size, generate_patter in write_loop()
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/third_party/ffmpeg/libavdevice/
H A Dalsa_dec.c90 s->period_size, 1.5E-6); in audio_read_header()
109 int ret = av_new_packet(s->pkt, s->period_size * s->frame_size); in audio_read_packet()
116 while ((res = snd_pcm_readi(s->h, s->pkt->data + s->pkt->size, s->period_size - s->pkt->size / s->frame_size)) < 0) { in audio_read_packet()
129 } while (s->pkt->size < s->period_size * s->frame_size); in audio_read_packet()
H A Dalsa.c183 snd_pcm_uframes_t buffer_size, period_size; in ff_alsa_open() local
259 snd_pcm_hw_params_get_period_size_min(hw_params, &period_size, NULL); in ff_alsa_open()
260 if (!period_size) in ff_alsa_open()
261 period_size = buffer_size / 4; in ff_alsa_open()
262 res = snd_pcm_hw_params_set_period_size_near(h, hw_params, &period_size, NULL); in ff_alsa_open()
268 s->period_size = period_size; in ff_alsa_open()
H A Dalsa.h52 int period_size; ///< preferred size for reads and writes, in frames member
/third_party/alsa-lib/include/
H A Dpcm_ioplug.h122 snd_pcm_uframes_t period_size; /**< period size; filled after hw_params is called */ member
H A Dpcm_rate.h48 snd_pcm_uframes_t period_size; member
/third_party/alsa-utils/alsaloop/
H A Dalsaloop.h97 unsigned int period_size; member

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