Lines Matching +full:min +full:- +full:sample +full:- +full:rate +full:- +full:hz
1 /* SPDX-License-Identifier: GPL-2.0-or-later */
8 * Abramo Bagnara <abramo@alsa-project.org>
20 #define snd_pcm_substream_chip(substream) ((substream)->private_data)
21 #define snd_pcm_chip(pcm) ((pcm)->private_data)
35 unsigned int rate_min; /* min rate */
36 unsigned int rate_max; /* max rate */
37 unsigned int channels_min; /* min channels */
40 size_t period_bytes_min; /* min period size */
42 unsigned int periods_min; /* min # of periods */
87 #define SNDRV_PCM_DEVICES (SNDRV_OS_MINORS-2)
106 #define SNDRV_PCM_POS_XRUN ((snd_pcm_uframes_t)-1)
109 #define SNDRV_PCM_RATE_5512 (1U<<0) /* 5512Hz */
110 #define SNDRV_PCM_RATE_8000 (1U<<1) /* 8000Hz */
111 #define SNDRV_PCM_RATE_11025 (1U<<2) /* 11025Hz */
112 #define SNDRV_PCM_RATE_16000 (1U<<3) /* 16000Hz */
113 #define SNDRV_PCM_RATE_22050 (1U<<4) /* 22050Hz */
114 #define SNDRV_PCM_RATE_32000 (1U<<5) /* 32000Hz */
115 #define SNDRV_PCM_RATE_44100 (1U<<6) /* 44100Hz */
116 #define SNDRV_PCM_RATE_48000 (1U<<7) /* 48000Hz */
117 #define SNDRV_PCM_RATE_64000 (1U<<8) /* 64000Hz */
118 #define SNDRV_PCM_RATE_88200 (1U<<9) /* 88200Hz */
119 #define SNDRV_PCM_RATE_96000 (1U<<10) /* 96000Hz */
120 #define SNDRV_PCM_RATE_176400 (1U<<11) /* 176400Hz */
121 #define SNDRV_PCM_RATE_192000 (1U<<12) /* 192000Hz */
122 #define SNDRV_PCM_RATE_352800 (1U<<13) /* 352800Hz */
123 #define SNDRV_PCM_RATE_384000 (1U<<14) /* 384000Hz */
126 #define SNDRV_PCM_RATE_KNOT (1U<<31) /* supports more non-continuos rates */
239 struct snd_mask masks[SNDRV_PCM_HW_PARAM_LAST_MASK -
241 struct snd_interval intervals[SNDRV_PCM_HW_PARAM_LAST_INTERVAL -
251 return &constrs->masks[var - SNDRV_PCM_HW_PARAM_FIRST_MASK]; in constrs_mask()
257 return &constrs->intervals[var - SNDRV_PCM_HW_PARAM_FIRST_INTERVAL]; in constrs_interval()
293 * userspace-provided audio timestamp config to kernel,
305 config->type_requested = data & 0xF; in snd_pcm_unpack_audio_tstamp_config()
306 config->report_delay = (data >> 4) & 1; in snd_pcm_unpack_audio_tstamp_config()
310 * kernel-provided audio timestamp report to user-space
314 /* 6 of max 16 bits used for bit-fields */
332 tmp = report->accuracy_report; in snd_pcm_pack_audio_tstamp_report()
334 tmp |= report->actual_type; in snd_pcm_pack_audio_tstamp_report()
336 tmp |= report->valid; in snd_pcm_pack_audio_tstamp_report()
338 *data &= 0xffff; /* zero-clear MSBs */ in snd_pcm_pack_audio_tstamp_report()
340 *accuracy = report->accuracy; in snd_pcm_pack_audio_tstamp_report()
345 /* -- Status -- */
348 bool trigger_tstamp_latched; /* trigger timestamp latched in low-level driver/hardware */
356 u64 hw_ptr_wrap; /* offset for hw_ptr due to boundary wrap-around */
358 /* -- HW params -- */
362 unsigned int rate; /* rate in Hz */ member
367 snd_pcm_uframes_t min_align; /* Min alignment for the format */
376 /* -- SW params -- */
391 /* -- mmap -- */
395 /* -- locking / scheduling -- */
396 snd_pcm_uframes_t twake; /* do transfer (!poll) wakeup if non-zero */
404 /* -- private section -- */
408 /* -- hardware description -- */
412 /* -- timer -- */
416 /* -- DMA -- */
424 /* -- audio timestamp config -- */
430 /* -- OSS things -- */
447 void *private_data; /* copied from pcm->private_data */
455 /* -- hardware operations -- */
457 /* -- runtime information -- */
459 /* -- timer section -- */
463 /* -- next substream -- */
465 /* -- linked substreams -- */
469 /* -- assigned files -- */
476 /* -- OSS things -- */
487 #define SUBSTREAM_BUSY(substream) ((substream)->ref_count > 0)
493 /* -- substreams -- */
498 /* -- OSS things -- */
507 struct snd_kcontrol *chmap_kctl; /* channel-mapping controls */
526 bool nonatomic; /* whole PCM operations are in non-atomic context */
604 * snd_pcm_stream_linked - Check whether the substream is linked with others
611 return substream->group != &substream->self_group; in snd_pcm_stream_linked()
621 * snd_pcm_stream_lock_irqsave - Lock the PCM stream
638 * snd_pcm_group_for_each_entry - iterate over the linked substreams
647 list_for_each_entry(s, &substream->group->substreams, link_list)
655 * snd_pcm_running - Check whether the substream is in a running state
663 return (substream->runtime->status->state == SNDRV_PCM_STATE_RUNNING || in snd_pcm_running()
664 (substream->runtime->status->state == SNDRV_PCM_STATE_DRAINING && in snd_pcm_running()
665 substream->stream == SNDRV_PCM_STREAM_PLAYBACK)); in snd_pcm_running()
669 * bytes_to_samples - Unit conversion of the size from bytes to samples
675 return size * 8 / runtime->sample_bits; in bytes_to_samples()
679 * bytes_to_frames - Unit conversion of the size from bytes to frames
685 return size * 8 / runtime->frame_bits; in bytes_to_frames()
689 * samples_to_bytes - Unit conversion of the size from samples to bytes
695 return size * runtime->sample_bits / 8; in samples_to_bytes()
699 * frames_to_bytes - Unit conversion of the size from frames to bytes
705 return size * runtime->frame_bits / 8; in frames_to_bytes()
709 * frame_aligned - Check whether the byte size is aligned to frames
715 return bytes % runtime->byte_align == 0; in frame_aligned()
719 * snd_pcm_lib_buffer_bytes - Get the buffer size of the current PCM in bytes
724 struct snd_pcm_runtime *runtime = substream->runtime; in snd_pcm_lib_buffer_bytes()
725 return frames_to_bytes(runtime, runtime->buffer_size); in snd_pcm_lib_buffer_bytes()
729 * snd_pcm_lib_period_bytes - Get the period size of the current PCM in bytes
734 struct snd_pcm_runtime *runtime = substream->runtime; in snd_pcm_lib_period_bytes()
735 return frames_to_bytes(runtime, runtime->period_size); in snd_pcm_lib_period_bytes()
739 * snd_pcm_playback_avail - Get the available (writable) space for playback
742 * Result is between 0 ... (boundary - 1)
746 …snd_pcm_sframes_t avail = runtime->status->hw_ptr + runtime->buffer_size - runtime->control->appl_… in snd_pcm_playback_avail()
748 avail += runtime->boundary; in snd_pcm_playback_avail()
749 else if ((snd_pcm_uframes_t) avail >= runtime->boundary) in snd_pcm_playback_avail()
750 avail -= runtime->boundary; in snd_pcm_playback_avail()
755 * snd_pcm_capture_avail - Get the available (readable) space for capture
758 * Result is between 0 ... (boundary - 1)
762 snd_pcm_sframes_t avail = runtime->status->hw_ptr - runtime->control->appl_ptr; in snd_pcm_capture_avail()
764 avail += runtime->boundary; in snd_pcm_capture_avail()
769 * snd_pcm_playback_hw_avail - Get the queued space for playback
774 return runtime->buffer_size - snd_pcm_playback_avail(runtime); in snd_pcm_playback_hw_avail()
778 * snd_pcm_capture_hw_avail - Get the free space for capture
783 return runtime->buffer_size - snd_pcm_capture_avail(runtime); in snd_pcm_capture_hw_avail()
787 * snd_pcm_playback_ready - check whether the playback buffer is available
792 * Return: Non-zero if available, or zero if not.
796 struct snd_pcm_runtime *runtime = substream->runtime; in snd_pcm_playback_ready()
797 return snd_pcm_playback_avail(runtime) >= runtime->control->avail_min; in snd_pcm_playback_ready()
801 * snd_pcm_capture_ready - check whether the capture buffer is available
806 * Return: Non-zero if available, or zero if not.
810 struct snd_pcm_runtime *runtime = substream->runtime; in snd_pcm_capture_ready()
811 return snd_pcm_capture_avail(runtime) >= runtime->control->avail_min; in snd_pcm_capture_ready()
815 * snd_pcm_playback_data - check whether any data exists on the playback buffer
820 * Return: Non-zero if any data exists, or zero if not. If stop_threshold
821 * is bigger or equal to boundary, then this function returns always non-zero.
825 struct snd_pcm_runtime *runtime = substream->runtime; in snd_pcm_playback_data()
827 if (runtime->stop_threshold >= runtime->boundary) in snd_pcm_playback_data()
829 return snd_pcm_playback_avail(runtime) < runtime->buffer_size; in snd_pcm_playback_data()
833 * snd_pcm_playback_empty - check whether the playback buffer is empty
838 * Return: Non-zero if empty, or zero if not.
842 struct snd_pcm_runtime *runtime = substream->runtime; in snd_pcm_playback_empty()
843 return snd_pcm_playback_avail(runtime) >= runtime->buffer_size; in snd_pcm_playback_empty()
847 * snd_pcm_capture_empty - check whether the capture buffer is empty
852 * Return: Non-zero if empty, or zero if not.
856 struct snd_pcm_runtime *runtime = substream->runtime; in snd_pcm_capture_empty()
861 * snd_pcm_trigger_done - Mark the master substream
866 * supports the single-shot operation, the driver calls this in the loop
877 substream->runtime->trigger_master = master; in snd_pcm_trigger_done()
895 return ¶ms->masks[var - SNDRV_PCM_HW_PARAM_FIRST_MASK]; in hw_param_mask()
901 return ¶ms->intervals[var - SNDRV_PCM_HW_PARAM_FIRST_INTERVAL]; in hw_param_interval()
907 return ¶ms->masks[var - SNDRV_PCM_HW_PARAM_FIRST_MASK]; in hw_param_mask_c()
913 return ¶ms->intervals[var - SNDRV_PCM_HW_PARAM_FIRST_INTERVAL]; in hw_param_interval_c()
917 * params_channels - Get the number of channels from the hw params
922 return hw_param_interval_c(p, SNDRV_PCM_HW_PARAM_CHANNELS)->min; in params_channels()
926 * params_rate - Get the sample rate from the hw params
931 return hw_param_interval_c(p, SNDRV_PCM_HW_PARAM_RATE)->min; in params_rate()
935 * params_period_size - Get the period size (in frames) from the hw params
940 return hw_param_interval_c(p, SNDRV_PCM_HW_PARAM_PERIOD_SIZE)->min; in params_period_size()
944 * params_periods - Get the number of periods from the hw params
949 return hw_param_interval_c(p, SNDRV_PCM_HW_PARAM_PERIODS)->min; in params_periods()
953 * params_buffer_size - Get the buffer size (in frames) from the hw params
958 return hw_param_interval_c(p, SNDRV_PCM_HW_PARAM_BUFFER_SIZE)->min; in params_buffer_size()
962 * params_buffer_bytes - Get the buffer size (in bytes) from the hw params
967 return hw_param_interval_c(p, SNDRV_PCM_HW_PARAM_BUFFER_BYTES)->min; in params_buffer_bytes()
987 unsigned int min, unsigned int max);
1025 * snd_pcm_hw_constraint_single() - Constrain parameter to a single value
1045 #if 0 /* just for kernel-doc */
1047 * snd_pcm_format_cpu_endian - Check the PCM format is CPU-endian
1050 * Return: 1 if the given PCM format is CPU-endian, 0 if
1137 return snd_pcm_hw_limit_rates(&runtime->hw); in snd_pcm_limit_hw_rates()
1140 unsigned int snd_pcm_rate_to_rate_bit(unsigned int rate);
1148 * snd_pcm_set_runtime_buffer - Set the PCM runtime buffer
1152 * Copy the buffer information to runtime->dma_buffer when @bufp is non-NULL.
1158 struct snd_pcm_runtime *runtime = substream->runtime; in snd_pcm_set_runtime_buffer()
1160 runtime->dma_buffer_p = bufp; in snd_pcm_set_runtime_buffer()
1161 runtime->dma_area = bufp->area; in snd_pcm_set_runtime_buffer()
1162 runtime->dma_addr = bufp->addr; in snd_pcm_set_runtime_buffer()
1163 runtime->dma_bytes = bufp->bytes; in snd_pcm_set_runtime_buffer()
1165 runtime->dma_buffer_p = NULL; in snd_pcm_set_runtime_buffer()
1166 runtime->dma_area = NULL; in snd_pcm_set_runtime_buffer()
1167 runtime->dma_addr = 0; in snd_pcm_set_runtime_buffer()
1168 runtime->dma_bytes = 0; in snd_pcm_set_runtime_buffer()
1173 * snd_pcm_gettime - Fill the timespec64 depending on the timestamp mode
1180 switch (runtime->tstamp_type) { in snd_pcm_gettime()
1220 * snd_pcm_lib_alloc_vmalloc_buffer - allocate virtual DMA buffer
1239 * snd_pcm_lib_alloc_vmalloc_32_buffer - allocate 32-bit-addressable buffer
1244 * vmalloc_32(), i.e., the pages are allocated from 32-bit-addressable memory.
1256 #define snd_pcm_get_dma_buf(substream) ((substream)->runtime->dma_buffer_p)
1260 * SG-buffer handling
1263 snd_pcm_get_dma_buf(substream)->private_data
1267 * snd_pcm_sgbuf_get_addr - Get the DMA address at the corresponding offset
1278 * snd_pcm_sgbuf_get_ptr - Get the virtual address at the corresponding offset
1289 * snd_pcm_sgbuf_get_chunk_size - Compute the max size that fits within the
1303 * snd_pcm_mmap_data_open - increase the mmap counter
1310 struct snd_pcm_substream *substream = (struct snd_pcm_substream *)area->vm_private_data; in snd_pcm_mmap_data_open()
1311 atomic_inc(&substream->mmap_count); in snd_pcm_mmap_data_open()
1315 * snd_pcm_mmap_data_close - decrease the mmap counter
1322 struct snd_pcm_substream *substream = (struct snd_pcm_substream *)area->vm_private_data; in snd_pcm_mmap_data_close()
1323 atomic_dec(&substream->mmap_count); in snd_pcm_mmap_data_close()
1328 /* mmap for io-memory area */
1338 * snd_pcm_limit_isa_dma_size - Get the max size fitting with ISA DMA transfer
1359 * snd_pcm_stream_str - Get a string naming the direction of a stream
1366 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) in snd_pcm_stream_str()
1373 * PCM channel-mapping control API
1393 * snd_pcm_chmap_substream - get the PCM substream assigned to the given chmap info
1401 for (s = info->pcm->streams[info->stream].substream; s; s = s->next) in snd_pcm_chmap_substream()
1402 if (s->number == idx) in snd_pcm_chmap_substream()
1407 /* ALSA-standard channel maps (RL/RR prior to C/LFE) */
1424 * pcm_format_to_bits - Strong-typed conversion of pcm_format to bitwise
1433 * pcm_for_each_format - helper to iterate for each format type
1443 dev_err((pcm)->card->dev, fmt, ##args)
1445 dev_warn((pcm)->card->dev, fmt, ##args)
1447 dev_dbg((pcm)->card->dev, fmt, ##args)
1463 …__u32 audio_tstamp_data; /* needed for 64-bit alignment, used for configs/report to/from userspac…
1464 s64 audio_tstamp_sec; /* sample counter, wall clock, PHC or on-demand sync'ed */
1469 unsigned char reserved[52-4*sizeof(s64)]; /* must be filled with zero */
1488 u32 audio_tstamp_data; /* needed for 64-bit alignment, used for configs/report to/from userspace */
1489 s32 audio_tstamp_sec; /* sample counter, wall clock, PHC or on-demand sync'ed */
1494 unsigned char reserved[52-4*sizeof(s32)]; /* must be filled with zero */