You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
479 lines
15 KiB
479 lines
15 KiB
/* tinyplay.c
|
|
**
|
|
** 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.
|
|
*/
|
|
|
|
#include <tinyalsa/asoundlib.h>
|
|
#include <signal.h>
|
|
#include <stdbool.h>
|
|
#include <stdint.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
#define OPTPARSE_IMPLEMENTATION
|
|
#include "optparse.h"
|
|
|
|
struct cmd {
|
|
const char *filename;
|
|
const char *filetype;
|
|
unsigned int card;
|
|
unsigned int device;
|
|
int flags;
|
|
struct pcm_config config;
|
|
unsigned int bits;
|
|
bool is_float;
|
|
};
|
|
|
|
void cmd_init(struct cmd *cmd)
|
|
{
|
|
cmd->filename = NULL;
|
|
cmd->filetype = NULL;
|
|
cmd->card = 0;
|
|
cmd->device = 0;
|
|
cmd->flags = PCM_OUT;
|
|
cmd->config.period_size = 1024;
|
|
cmd->config.period_count = 2;
|
|
cmd->config.channels = 2;
|
|
cmd->config.rate = 48000;
|
|
cmd->config.format = PCM_FORMAT_S16_LE;
|
|
cmd->config.silence_threshold = cmd->config.period_size * cmd->config.period_count;
|
|
cmd->config.silence_size = 0;
|
|
cmd->config.stop_threshold = cmd->config.period_size * cmd->config.period_count;
|
|
cmd->config.start_threshold = cmd->config.period_size;
|
|
cmd->bits = 16;
|
|
cmd->is_float = false;
|
|
}
|
|
|
|
#define ID_RIFF 0x46464952
|
|
#define ID_WAVE 0x45564157
|
|
#define ID_FMT 0x20746d66
|
|
#define ID_DATA 0x61746164
|
|
|
|
#define WAVE_FORMAT_PCM 0x0001
|
|
#define WAVE_FORMAT_IEEE_FLOAT 0x0003
|
|
|
|
struct riff_wave_header {
|
|
uint32_t riff_id;
|
|
uint32_t riff_sz;
|
|
uint32_t wave_id;
|
|
};
|
|
|
|
struct chunk_header {
|
|
uint32_t id;
|
|
uint32_t sz;
|
|
};
|
|
|
|
struct chunk_fmt {
|
|
uint16_t audio_format;
|
|
uint16_t num_channels;
|
|
uint32_t sample_rate;
|
|
uint32_t byte_rate;
|
|
uint16_t block_align;
|
|
uint16_t bits_per_sample;
|
|
};
|
|
|
|
struct ctx {
|
|
struct pcm *pcm;
|
|
|
|
struct riff_wave_header wave_header;
|
|
struct chunk_header chunk_header;
|
|
struct chunk_fmt chunk_fmt;
|
|
|
|
FILE *file;
|
|
};
|
|
|
|
static bool is_wave_file(const char *filetype)
|
|
{
|
|
return filetype != NULL && strcmp(filetype, "wav") == 0;
|
|
}
|
|
|
|
static bool signed_pcm_bits_to_format(int bits)
|
|
{
|
|
switch (bits) {
|
|
case 8:
|
|
return PCM_FORMAT_S8;
|
|
case 16:
|
|
return PCM_FORMAT_S16_LE;
|
|
case 24:
|
|
return PCM_FORMAT_S24_3LE;
|
|
case 32:
|
|
return PCM_FORMAT_S32_LE;
|
|
default:
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
static int ctx_init(struct ctx* ctx, struct cmd *cmd)
|
|
{
|
|
unsigned int bits = cmd->bits;
|
|
struct pcm_config *config = &cmd->config;
|
|
bool is_float = cmd->is_float;
|
|
|
|
if (cmd->filename == NULL) {
|
|
fprintf(stderr, "filename not specified\n");
|
|
return -1;
|
|
}
|
|
if (strcmp(cmd->filename, "-") == 0) {
|
|
ctx->file = stdin;
|
|
} else {
|
|
ctx->file = fopen(cmd->filename, "rb");
|
|
}
|
|
|
|
if (ctx->file == NULL) {
|
|
fprintf(stderr, "failed to open '%s'\n", cmd->filename);
|
|
return -1;
|
|
}
|
|
|
|
if (is_wave_file(cmd->filetype)) {
|
|
if (fread(&ctx->wave_header, sizeof(ctx->wave_header), 1, ctx->file) != 1){
|
|
fprintf(stderr, "error: '%s' does not contain a riff/wave header\n", cmd->filename);
|
|
fclose(ctx->file);
|
|
return -1;
|
|
}
|
|
if ((ctx->wave_header.riff_id != ID_RIFF) ||
|
|
(ctx->wave_header.wave_id != ID_WAVE)) {
|
|
fprintf(stderr, "error: '%s' is not a riff/wave file\n", cmd->filename);
|
|
fclose(ctx->file);
|
|
return -1;
|
|
}
|
|
unsigned int more_chunks = 1;
|
|
do {
|
|
if (fread(&ctx->chunk_header, sizeof(ctx->chunk_header), 1, ctx->file) != 1){
|
|
fprintf(stderr, "error: '%s' does not contain a data chunk\n", cmd->filename);
|
|
fclose(ctx->file);
|
|
return -1;
|
|
}
|
|
switch (ctx->chunk_header.id) {
|
|
case ID_FMT:
|
|
if (fread(&ctx->chunk_fmt, sizeof(ctx->chunk_fmt), 1, ctx->file) != 1){
|
|
fprintf(stderr, "error: '%s' has incomplete format chunk\n", cmd->filename);
|
|
fclose(ctx->file);
|
|
return -1;
|
|
}
|
|
/* If the format header is larger, skip the rest */
|
|
if (ctx->chunk_header.sz > sizeof(ctx->chunk_fmt))
|
|
fseek(ctx->file, ctx->chunk_header.sz - sizeof(ctx->chunk_fmt), SEEK_CUR);
|
|
break;
|
|
case ID_DATA:
|
|
/* Stop looking for chunks */
|
|
more_chunks = 0;
|
|
break;
|
|
default:
|
|
/* Unknown chunk, skip bytes */
|
|
fseek(ctx->file, ctx->chunk_header.sz, SEEK_CUR);
|
|
}
|
|
} while (more_chunks);
|
|
config->channels = ctx->chunk_fmt.num_channels;
|
|
config->rate = ctx->chunk_fmt.sample_rate;
|
|
bits = ctx->chunk_fmt.bits_per_sample;
|
|
is_float = ctx->chunk_fmt.audio_format == WAVE_FORMAT_IEEE_FLOAT;
|
|
}
|
|
|
|
if (is_float) {
|
|
config->format = PCM_FORMAT_FLOAT_LE;
|
|
} else {
|
|
config->format = signed_pcm_bits_to_format(bits);
|
|
if (config->format == -1) {
|
|
fprintf(stderr, "bit count '%u' not supported\n", bits);
|
|
fclose(ctx->file);
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
ctx->pcm = pcm_open(cmd->card,
|
|
cmd->device,
|
|
cmd->flags,
|
|
config);
|
|
if (!pcm_is_ready(ctx->pcm)) {
|
|
fprintf(stderr, "failed to open for pcm %u,%u. %s\n",
|
|
cmd->card, cmd->device,
|
|
pcm_get_error(ctx->pcm));
|
|
fclose(ctx->file);
|
|
pcm_close(ctx->pcm);
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
void ctx_free(struct ctx *ctx)
|
|
{
|
|
if (ctx == NULL) {
|
|
return;
|
|
}
|
|
if (ctx->pcm != NULL) {
|
|
pcm_close(ctx->pcm);
|
|
}
|
|
if (ctx->file != NULL) {
|
|
fclose(ctx->file);
|
|
}
|
|
}
|
|
|
|
static int close = 0;
|
|
|
|
int play_sample(struct ctx *ctx);
|
|
|
|
void stream_close(int sig)
|
|
{
|
|
/* allow the stream to be closed gracefully */
|
|
signal(sig, SIG_IGN);
|
|
close = 1;
|
|
}
|
|
|
|
void print_usage(const char *argv0)
|
|
{
|
|
fprintf(stderr, "usage: %s file.wav [options]\n", argv0);
|
|
fprintf(stderr, "options:\n");
|
|
fprintf(stderr, "-D | --card <card number> The card to receive the audio\n");
|
|
fprintf(stderr, "-d | --device <device number> The device to receive the audio\n");
|
|
fprintf(stderr, "-p | --period-size <size> The size of the PCM's period\n");
|
|
fprintf(stderr, "-n | --period-count <count> The number of PCM periods\n");
|
|
fprintf(stderr, "-i | --file-type <file-type> The type of file to read (raw or wav)\n");
|
|
fprintf(stderr, "-c | --channels <count> The amount of channels per frame\n");
|
|
fprintf(stderr, "-r | --rate <rate> The amount of frames per second\n");
|
|
fprintf(stderr, "-b | --bits <bit-count> The number of bits in one sample\n");
|
|
fprintf(stderr, "-f | --float The frames are in floating-point PCM\n");
|
|
fprintf(stderr, "-M | --mmap Use memory mapped IO to play audio\n");
|
|
}
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
int c;
|
|
struct cmd cmd;
|
|
struct ctx ctx;
|
|
struct optparse opts;
|
|
struct optparse_long long_options[] = {
|
|
{ "card", 'D', OPTPARSE_REQUIRED },
|
|
{ "device", 'd', OPTPARSE_REQUIRED },
|
|
{ "period-size", 'p', OPTPARSE_REQUIRED },
|
|
{ "period-count", 'n', OPTPARSE_REQUIRED },
|
|
{ "file-type", 'i', OPTPARSE_REQUIRED },
|
|
{ "channels", 'c', OPTPARSE_REQUIRED },
|
|
{ "rate", 'r', OPTPARSE_REQUIRED },
|
|
{ "bits", 'b', OPTPARSE_REQUIRED },
|
|
{ "float", 'f', OPTPARSE_NONE },
|
|
{ "mmap", 'M', OPTPARSE_NONE },
|
|
{ "help", 'h', OPTPARSE_NONE },
|
|
{ 0, 0, 0 }
|
|
};
|
|
|
|
if (argc < 2) {
|
|
print_usage(argv[0]);
|
|
return EXIT_FAILURE;
|
|
}
|
|
|
|
cmd_init(&cmd);
|
|
optparse_init(&opts, argv);
|
|
while ((c = optparse_long(&opts, long_options, NULL)) != -1) {
|
|
switch (c) {
|
|
case 'D':
|
|
if (sscanf(opts.optarg, "%u", &cmd.card) != 1) {
|
|
fprintf(stderr, "failed parsing card number '%s'\n", argv[1]);
|
|
return EXIT_FAILURE;
|
|
}
|
|
break;
|
|
case 'd':
|
|
if (sscanf(opts.optarg, "%u", &cmd.device) != 1) {
|
|
fprintf(stderr, "failed parsing device number '%s'\n", argv[1]);
|
|
return EXIT_FAILURE;
|
|
}
|
|
break;
|
|
case 'p':
|
|
if (sscanf(opts.optarg, "%u", &cmd.config.period_size) != 1) {
|
|
fprintf(stderr, "failed parsing period size '%s'\n", argv[1]);
|
|
return EXIT_FAILURE;
|
|
}
|
|
break;
|
|
case 'n':
|
|
if (sscanf(opts.optarg, "%u", &cmd.config.period_count) != 1) {
|
|
fprintf(stderr, "failed parsing period count '%s'\n", argv[1]);
|
|
return EXIT_FAILURE;
|
|
}
|
|
break;
|
|
case 'c':
|
|
if (sscanf(opts.optarg, "%u", &cmd.config.channels) != 1) {
|
|
fprintf(stderr, "failed parsing channel count '%s'\n", argv[1]);
|
|
return EXIT_FAILURE;
|
|
}
|
|
break;
|
|
case 'r':
|
|
if (sscanf(opts.optarg, "%u", &cmd.config.rate) != 1) {
|
|
fprintf(stderr, "failed parsing rate '%s'\n", argv[1]);
|
|
return EXIT_FAILURE;
|
|
}
|
|
break;
|
|
case 'i':
|
|
cmd.filetype = opts.optarg;
|
|
break;
|
|
case 'b':
|
|
if (sscanf(opts.optarg, "%u", &cmd.bits) != 1) {
|
|
fprintf(stderr, "failed parsing bits per one sample '%s'\n", argv[1]);
|
|
return EXIT_FAILURE;
|
|
}
|
|
break;
|
|
case 'f':
|
|
cmd.is_float = true;
|
|
break;
|
|
case 'M':
|
|
cmd.flags |= PCM_MMAP;
|
|
break;
|
|
case 'h':
|
|
print_usage(argv[0]);
|
|
return EXIT_SUCCESS;
|
|
case '?':
|
|
fprintf(stderr, "%s\n", opts.errmsg);
|
|
return EXIT_FAILURE;
|
|
}
|
|
}
|
|
cmd.filename = optparse_arg(&opts);
|
|
|
|
if (cmd.filename != NULL && cmd.filetype == NULL &&
|
|
(cmd.filetype = strrchr(cmd.filename, '.')) != NULL) {
|
|
cmd.filetype++;
|
|
}
|
|
|
|
cmd.config.silence_threshold = cmd.config.period_size * cmd.config.period_count;
|
|
cmd.config.stop_threshold = cmd.config.period_size * cmd.config.period_count;
|
|
cmd.config.start_threshold = cmd.config.period_size;
|
|
|
|
if (ctx_init(&ctx, &cmd) < 0) {
|
|
return EXIT_FAILURE;
|
|
}
|
|
|
|
printf("playing '%s': %u ch, %u hz, %u-bit ", cmd.filename, cmd.config.channels,
|
|
cmd.config.rate, pcm_format_to_bits(cmd.config.format));
|
|
if (cmd.config.format == PCM_FORMAT_FLOAT_LE) {
|
|
printf("floating-point PCM\n");
|
|
} else {
|
|
printf("signed PCM\n");
|
|
}
|
|
|
|
if (play_sample(&ctx) < 0) {
|
|
ctx_free(&ctx);
|
|
return EXIT_FAILURE;
|
|
}
|
|
|
|
ctx_free(&ctx);
|
|
return EXIT_SUCCESS;
|
|
}
|
|
|
|
int check_param(struct pcm_params *params, unsigned int param, unsigned int value,
|
|
char *param_name, char *param_unit)
|
|
{
|
|
unsigned int min;
|
|
unsigned int max;
|
|
int is_within_bounds = 1;
|
|
|
|
min = pcm_params_get_min(params, param);
|
|
if (value < min) {
|
|
fprintf(stderr, "%s is %u%s, device only supports >= %u%s\n", param_name, value,
|
|
param_unit, min, param_unit);
|
|
is_within_bounds = 0;
|
|
}
|
|
|
|
max = pcm_params_get_max(params, param);
|
|
if (value > max) {
|
|
fprintf(stderr, "%s is %u%s, device only supports <= %u%s\n", param_name, value,
|
|
param_unit, max, param_unit);
|
|
is_within_bounds = 0;
|
|
}
|
|
|
|
return is_within_bounds;
|
|
}
|
|
|
|
int sample_is_playable(const struct cmd *cmd)
|
|
{
|
|
struct pcm_params *params;
|
|
int can_play;
|
|
|
|
params = pcm_params_get(cmd->card, cmd->device, PCM_OUT);
|
|
if (params == NULL) {
|
|
fprintf(stderr, "unable to open PCM %u,%u\n", cmd->card, cmd->device);
|
|
return 0;
|
|
}
|
|
|
|
can_play = check_param(params, PCM_PARAM_RATE, cmd->config.rate, "sample rate", "hz");
|
|
can_play &= check_param(params, PCM_PARAM_CHANNELS, cmd->config.channels, "sample", " channels");
|
|
can_play &= check_param(params, PCM_PARAM_SAMPLE_BITS, cmd->bits, "bits", " bits");
|
|
can_play &= check_param(params, PCM_PARAM_PERIOD_SIZE, cmd->config.period_size, "period size",
|
|
" frames");
|
|
can_play &= check_param(params, PCM_PARAM_PERIODS, cmd->config.period_count, "period count",
|
|
" frames");
|
|
|
|
pcm_params_free(params);
|
|
|
|
return can_play;
|
|
}
|
|
|
|
int play_sample(struct ctx *ctx)
|
|
{
|
|
char *buffer;
|
|
size_t buffer_size = 0;
|
|
size_t num_read = 0;
|
|
size_t remaining_data_size = ctx->chunk_header.sz;
|
|
size_t played_data_size = 0;
|
|
size_t read_size = 0;
|
|
const struct pcm_config *config = pcm_get_config(ctx->pcm);
|
|
|
|
if (config == NULL) {
|
|
fprintf(stderr, "unable to get pcm config\n");
|
|
return -1;
|
|
}
|
|
|
|
buffer_size = pcm_frames_to_bytes(ctx->pcm, config->period_size);
|
|
buffer = malloc(buffer_size);
|
|
if (!buffer) {
|
|
fprintf(stderr, "unable to allocate %zu bytes\n", buffer_size);
|
|
return -1;
|
|
}
|
|
|
|
/* catch ctrl-c to shutdown cleanly */
|
|
signal(SIGINT, stream_close);
|
|
|
|
do {
|
|
read_size = remaining_data_size > buffer_size ? buffer_size : remaining_data_size;
|
|
num_read = fread(buffer, 1, read_size, ctx->file);
|
|
if (num_read > 0) {
|
|
int written_frames = pcm_writei(ctx->pcm, buffer,
|
|
pcm_bytes_to_frames(ctx->pcm, num_read));
|
|
if (written_frames < 0) {
|
|
fprintf(stderr, "error playing sample. %s\n", pcm_get_error(ctx->pcm));
|
|
break;
|
|
}
|
|
remaining_data_size -= num_read;
|
|
played_data_size += pcm_frames_to_bytes(ctx->pcm, written_frames);
|
|
}
|
|
} while (!close && num_read > 0 && remaining_data_size > 0);
|
|
|
|
printf("Played %zu bytes. Remains %zu bytes.\n", played_data_size, remaining_data_size);
|
|
pcm_wait(ctx->pcm, -1);
|
|
|
|
free(buffer);
|
|
return 0;
|
|
}
|
|
|