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Merge tinyalsa pcm into audio/drivers/tinyalsa.c - now single-file

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twinaphex 2017-06-24 21:48:43 +02:00
parent 0aa4edafcf
commit 38e5d062e8
6 changed files with 1655 additions and 1918 deletions
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3
Makefile.common
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@ -384,8 +384,7 @@ endif
endif
ifeq ($(HAVE_TINYALSA), 1)
OBJ += audio/drivers/tinyalsa.o\
deps/tinyalsa/pcm.o
OBJ += audio/drivers/tinyalsa.o
DEFINES += -DHAVE_TINYALSA
endif

1656
audio/drivers/tinyalsa.c
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54
deps/tinyalsa/interval.h vendored
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@ -1,54 +0,0 @@
/* interval.h
**
** Copyright 2011, The Android Open Source Project
**
** Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in the
** documentation and/or other materials provided with the distribution.
** * Neither the name of The Android Open Source Project nor the names of
** its contributors may be used to endorse or promote products derived
** from this software without specific prior written permission.
**
** THIS SOFTWARE IS PROVIDED BY The Android Open Source Project ``AS IS'' AND
** ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
** IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
** ARE DISCLAIMED. IN NO EVENT SHALL The Android Open Source Project BE LIABLE
** FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
** DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
** SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
** CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
** LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
** OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
** DAMAGE.
*/
#ifndef TINYALSA_INTERVAL_H
#define TINYALSA_INTERVAL_H
#include <stdlib.h>
#include <unistd.h>
/** A closed range signed interval. */
struct tinyalsa_signed_interval {
/** The maximum value of the interval */
ssize_t max;
/** The minimum value of the interval */
ssize_t min;
};
/** A closed range unsigned interval. */
struct tinyalsa_unsigned_interval {
/** The maximum value of the interval */
size_t max;
/** The minimum value of the interval */
size_t min;
};
#endif /* TINYALSA_INTERVAL_H */

62
deps/tinyalsa/limits.h vendored
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@ -1,62 +0,0 @@
/* limits.h
**
** Copyright 2011, The Android Open Source Project
**
** Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in the
** documentation and/or other materials provided with the distribution.
** * Neither the name of The Android Open Source Project nor the names of
** its contributors may be used to endorse or promote products derived
** from this software without specific prior written permission.
**
** THIS SOFTWARE IS PROVIDED BY The Android Open Source Project ``AS IS'' AND
** ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
** IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
** ARE DISCLAIMED. IN NO EVENT SHALL The Android Open Source Project BE LIABLE
** FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
** DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
** SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
** CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
** LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
** OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
** DAMAGE.
*/
#ifndef TINYALSA_LIMITS_H
#define TINYALSA_LIMITS_H
#include "interval.h"
#include <limits.h>
#include <stdint.h>
#define TINYALSA_SIGNED_INTERVAL_MAX SSIZE_MAX
#define TINYALSA_SIGNED_INTERVAL_MIN SSIZE_MIN
#define TINYALSA_UNSIGNED_INTERVAL_MAX SIZE_MAX
#define TINYALSA_UNSIGNED_INTERVAL_MIN SIZE_MIN
#define TINYALSA_CHANNELS_MAX 32U
#define TINYALSA_CHANNELS_MIN 1U
#define TINYALSA_FRAMES_MAX (ULONG_MAX / (TINYALSA_CHANNELS_MAX * 4))
#define TINYALSA_FRAMES_MIN 0U
#if TINYALSA_FRAMES_MAX > TINYALSA_UNSIGNED_INTERVAL_MAX
#error "Frames max exceeds measurable value."
#endif
#if TINYALSA_FRAMES_MIN < TINYALSA_UNSIGNED_INTERVAL_MIN
#error "Frames min exceeds measurable value."
#endif
extern const struct tinyalsa_unsigned_interval tinyalsa_channels_limit;
extern const struct tinyalsa_unsigned_interval tinyalsa_frames_limit;
#endif /* TINYALSA_LIMITS_H */

1480
deps/tinyalsa/pcm.c vendored
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318
deps/tinyalsa/pcm.h vendored
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@ -1,318 +0,0 @@
/* pcm.h
**
** Copyright 2011, The Android Open Source Project
**
** Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in the
** documentation and/or other materials provided with the distribution.
** * Neither the name of The Android Open Source Project nor the names of
** its contributors may be used to endorse or promote products derived
** from this software without specific prior written permission.
**
** THIS SOFTWARE IS PROVIDED BY The Android Open Source Project ``AS IS'' AND
** ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
** IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
** ARE DISCLAIMED. IN NO EVENT SHALL The Android Open Source Project BE LIABLE
** FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
** DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
** SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
** CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
** LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
** OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
** DAMAGE.
*/
/** @file */
/** @defgroup libtinyalsa-pcm PCM Interface
* @brief All macros, structures and functions that make up the PCM interface.
*/
#ifndef TINYALSA_PCM_H
#define TINYALSA_PCM_H
#include <sys/time.h>
#include <stddef.h>
#if defined(__cplusplus)
extern "C" {
#endif
/** A flag that specifies that the PCM is an output.
* May not be bitwise AND'd with @ref PCM_IN.
* Used in @ref pcm_open.
* @ingroup libtinyalsa-pcm
*/
#define PCM_OUT 0x00000000
/** Specifies that the PCM is an input.
* May not be bitwise AND'd with @ref PCM_OUT.
* Used in @ref pcm_open.
* @ingroup libtinyalsa-pcm
*/
#define PCM_IN 0x10000000
/** Specifies that the PCM will use mmap read and write methods.
* Used in @ref pcm_open.
* @ingroup libtinyalsa-pcm
*/
#define PCM_MMAP 0x00000001
/** Specifies no interrupt requests.
* May only be bitwise AND'd with @ref PCM_MMAP.
* Used in @ref pcm_open.
* @ingroup libtinyalsa-pcm
*/
#define PCM_NOIRQ 0x00000002
/** When set, calls to @ref pcm_write
* for a playback stream will not attempt
* to restart the stream in the case of an
* underflow, but will return -EPIPE instead.
* After the first -EPIPE error, the stream
* is considered to be stopped, and a second
* call to pcm_write will attempt to restart
* the stream.
* Used in @ref pcm_open.
* @ingroup libtinyalsa-pcm
*/
#define PCM_NORESTART 0x00000004
/** Specifies monotonic timestamps.
* Used in @ref pcm_open.
* @ingroup libtinyalsa-pcm
*/
#define PCM_MONOTONIC 0x00000008
/** For inputs, this means the PCM is recording audio samples.
* For outputs, this means the PCM is playing audio samples.
* @ingroup libtinyalsa-pcm
*/
#define PCM_STATE_RUNNING 0x03
/** For inputs, this means an overrun occured.
* For outputs, this means an underrun occured.
*/
#define PCM_STATE_XRUN 0x04
/** For outputs, this means audio samples are played.
* A PCM is in a draining state when it is coming to a stop.
*/
#define PCM_STATE_DRAINING 0x05
/** Means a PCM is suspended.
* @ingroup libtinyalsa-pcm
*/
#define PCM_STATE_SUSPENDED 0x07
/** Means a PCM has been disconnected.
* @ingroup libtinyalsa-pcm
*/
#define PCM_STATE_DISCONNECTED 0x08
/** Audio sample format of a PCM.
* The first letter specifiers whether the sample is signed or unsigned.
* The letter 'S' means signed. The letter 'U' means unsigned.
* The following number is the amount of bits that the sample occupies in memory.
* Following the underscore, specifiers whether the sample is big endian or little endian.
* The letters 'LE' mean little endian.
* The letters 'BE' mean big endian.
* This enumeration is used in the @ref pcm_config structure.
* @ingroup libtinyalsa-pcm
*/
enum pcm_format {
/** Signed, 8-bit */
PCM_FORMAT_S8 = 1,
/** Signed 16-bit, little endian */
PCM_FORMAT_S16_LE = 0,
/** Signed, 16-bit, big endian */
PCM_FORMAT_S16_BE = 2,
/** Signed, 24-bit (32-bit in memory), little endian */
PCM_FORMAT_S24_LE,
/** Signed, 24-bit (32-bit in memory), big endian */
PCM_FORMAT_S24_BE,
/** Signed, 24-bit, little endian */
PCM_FORMAT_S24_3LE,
/** Signed, 24-bit, big endian */
PCM_FORMAT_S24_3BE,
/** Signed, 32-bit, little endian */
PCM_FORMAT_S32_LE,
/** Signed, 32-bit, big endian */
PCM_FORMAT_S32_BE,
/** Max of the enumeration list, not an actual format. */
PCM_FORMAT_MAX
};
/** A bit mask of 256 bits (32 bytes) that describes some hardware parameters of a PCM */
struct pcm_mask {
/** bits of the bit mask */
unsigned int bits[32 / sizeof(unsigned int)];
};
/** Encapsulates the hardware and software parameters of a PCM.
* @ingroup libtinyalsa-pcm
*/
struct pcm_config {
/** The number of channels in a frame */
unsigned int channels;
/** The number of frames per second */
unsigned int rate;
/** The number of frames in a period */
unsigned int period_size;
/** The number of periods in a PCM */
unsigned int period_count;
/** The sample format of a PCM */
enum pcm_format format;
/* Values to use for the ALSA start, stop and silence thresholds. Setting
* any one of these values to 0 will cause the default tinyalsa values to be
* used instead. Tinyalsa defaults are as follows.
*
* start_threshold : period_count * period_size
* stop_threshold : period_count * period_size
* silence_threshold : 0
*/
/** The minimum number of frames required to start the PCM */
unsigned int start_threshold;
/** The minimum number of frames required to stop the PCM */
unsigned int stop_threshold;
/** The minimum number of frames to silence the PCM */
unsigned int silence_threshold;
};
/** Enumeration of a PCM's hardware parameters.
* Each of these parameters is either a mask or an interval.
* @ingroup libtinyalsa-pcm
*/
enum pcm_param
{
/** A mask that represents the type of read or write method available (e.g. interleaved, mmap). */
PCM_PARAM_ACCESS,
/** A mask that represents the @ref pcm_format available (e.g. @ref PCM_FORMAT_S32_LE) */
PCM_PARAM_FORMAT,
/** A mask that represents the subformat available */
PCM_PARAM_SUBFORMAT,
/** An interval representing the range of sample bits available (e.g. 8 to 32) */
PCM_PARAM_SAMPLE_BITS,
/** An interval representing the range of frame bits available (e.g. 8 to 64) */
PCM_PARAM_FRAME_BITS,
/** An interval representing the range of channels available (e.g. 1 to 2) */
PCM_PARAM_CHANNELS,
/** An interval representing the range of rates available (e.g. 44100 to 192000) */
PCM_PARAM_RATE,
PCM_PARAM_PERIOD_TIME,
/** The number of frames in a period */
PCM_PARAM_PERIOD_SIZE,
/** The number of bytes in a period */
PCM_PARAM_PERIOD_BYTES,
/** The number of periods for a PCM */
PCM_PARAM_PERIODS,
PCM_PARAM_BUFFER_TIME,
PCM_PARAM_BUFFER_SIZE,
PCM_PARAM_BUFFER_BYTES,
PCM_PARAM_TICK_TIME,
}; /* enum pcm_param */
struct pcm_params;
struct pcm_params *pcm_params_get(unsigned int card, unsigned int device,
unsigned int flags);
void pcm_params_free(struct pcm_params *pcm_params);
const struct pcm_mask *pcm_params_get_mask(const struct pcm_params *pcm_params, enum pcm_param param);
unsigned int pcm_params_get_min(const struct pcm_params *pcm_params, enum pcm_param param);
unsigned int pcm_params_get_max(const struct pcm_params *pcm_params, enum pcm_param param);
struct pcm;
struct pcm *pcm_open(unsigned int card,
unsigned int device,
unsigned int flags,
const struct pcm_config *config);
struct pcm *pcm_open_by_name(const char *name,
unsigned int flags,
const struct pcm_config *config);
int pcm_close(struct pcm *pcm);
int pcm_is_ready(const struct pcm *pcm);
unsigned int pcm_get_channels(const struct pcm *pcm);
const struct pcm_config * pcm_get_config(const struct pcm *pcm);
unsigned int pcm_get_rate(const struct pcm *pcm);
enum pcm_format pcm_get_format(const struct pcm *pcm);
int pcm_get_file_descriptor(const struct pcm *pcm);
const char *pcm_get_error(const struct pcm *pcm);
int pcm_set_config(struct pcm *pcm, const struct pcm_config *config);
unsigned int pcm_format_to_bits(enum pcm_format format);
unsigned int pcm_get_buffer_size(const struct pcm *pcm);
unsigned int pcm_frames_to_bytes(const struct pcm *pcm, unsigned int frames);
unsigned int pcm_bytes_to_frames(const struct pcm *pcm, unsigned int bytes);
int pcm_get_htimestamp(struct pcm *pcm, unsigned int *avail, struct timespec *tstamp);
unsigned int pcm_get_subdevice(const struct pcm *pcm);
int pcm_writei(struct pcm *pcm, const void *data, unsigned int frame_count);
int pcm_readi(struct pcm *pcm, void *data, unsigned int frame_count);
#ifdef __GNUC__
int pcm_write(struct pcm *pcm, const void *data, unsigned int count) __attribute((deprecated));
int pcm_read(struct pcm *pcm, void *data, unsigned int count) __attribute((deprecated));
#else
int pcm_write(struct pcm *pcm, const void *data, unsigned int count);
int pcm_read(struct pcm *pcm, void *data, unsigned int count);
#endif
int pcm_mmap_write(struct pcm *pcm, const void *data, unsigned int count);
int pcm_mmap_read(struct pcm *pcm, void *data, unsigned int count);
int pcm_mmap_begin(struct pcm *pcm, void **areas, unsigned int *offset, unsigned int *frames);
int pcm_mmap_commit(struct pcm *pcm, unsigned int offset, unsigned int frames);
int pcm_link(struct pcm *pcm1, struct pcm *pcm2);
int pcm_unlink(struct pcm *pcm);
int pcm_prepare(struct pcm *pcm);
int pcm_start(struct pcm *pcm);
int pcm_stop(struct pcm *pcm);
int pcm_wait(struct pcm *pcm, int timeout);
long pcm_get_delay(struct pcm *pcm);
#if defined(__cplusplus)
} /* extern "C" */
#endif
#endif