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-rw-r--r--utils/tinyplay.c439
1 files changed, 270 insertions, 169 deletions
diff --git a/utils/tinyplay.c b/utils/tinyplay.c
index 1c4e23f..db1b611 100644
--- a/utils/tinyplay.c
+++ b/utils/tinyplay.c
@@ -33,6 +33,116 @@
#include <string.h>
#include <signal.h>
+struct cmd {
+ const char *filename;
+ const char *filetype;
+ unsigned int card;
+ unsigned int device;
+ int flags;
+ struct pcm_config config;
+ unsigned int bits;
+};
+
+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 = 1024 * 2;
+ cmd->config.stop_threshold = 1024 * 2;
+ cmd->config.start_threshold = 1024;
+ cmd->bits = 16;
+}
+
+int cmd_parse_arg(struct cmd *cmd, int argc, const char **argv)
+{
+ if (argc < 1) {
+ return 0;
+ }
+
+ if ((strcmp(argv[0], "-M") == 0) || (strcmp(argv[0], "--mmap") == 0)) {
+ cmd->flags |= PCM_MMAP;
+ return 1;
+ }
+
+ if (argv[0][0] != '-') {
+ cmd->filename = argv[0];
+ return 1;
+ }
+
+ if (argc < 2) {
+ fprintf(stderr, "option '%s' is missing argument\n", argv[0]);
+ return -1;
+ }
+
+ if ((strcmp(argv[0], "-D") == 0) || (strcmp(argv[0], "--card") == 0)) {
+ if (sscanf(argv[1], "%u", &cmd->card) != 1) {
+ fprintf(stderr, "failed parsing card number '%s'\n", argv[1]);
+ return -1;
+ }
+ } else if ((strcmp(argv[0], "-d") == 0) || (strcmp(argv[0], "--device") == 0)) {
+ if (sscanf(argv[1], "%u", &cmd->device) != 1) {
+ fprintf(stderr, "failed parsing device number '%s'\n", argv[1]);
+ return -1;
+ }
+ } else if ((strcmp(argv[0], "-p") == 0) || (strcmp(argv[0], "--period-size") == 0)) {
+ if (sscanf(argv[1], "%u", &cmd->config.period_size) != 1) {
+ fprintf(stderr, "failed parsing period size '%s'\n", argv[1]);
+ return -1;
+ }
+ } else if ((strcmp(argv[0], "-p") == 0) || (strcmp(argv[0], "--period-count") == 0)) {
+ if (sscanf(argv[1], "%u", &cmd->config.period_count) != 1) {
+ fprintf(stderr, "failed parsing period count '%s'\n", argv[1]);
+ return -1;
+ }
+ } else if ((strcmp(argv[0], "-c") == 0) || (strcmp(argv[0], "--channels") == 0)) {
+ if (sscanf(argv[1], "%u", &cmd->config.channels) != 1) {
+ fprintf(stderr, "failed parsing channel count '%s'\n", argv[1]);
+ return -1;
+ }
+ } else if ((strcmp(argv[0], "-r") == 0) || (strcmp(argv[0], "--rate") == 0)) {
+ if (sscanf(argv[1], "%u", &cmd->config.rate) != 1) {
+ fprintf(stderr, "failed parsing rate '%s'\n", argv[1]);
+ return -1;
+ }
+ } else if ((strcmp(argv[0], "-i") == 0) || (strcmp(argv[0], "--file-type") == 0)) {
+ cmd->filetype = argv[1];
+ } else {
+ fprintf(stderr, "unknown option '%s'\n", argv[0]);
+ return -1;
+ }
+ return 2;
+}
+
+int cmd_parse_args(struct cmd *cmd, int argc, const char **argv)
+{
+ int i = 0;
+ while (i < argc) {
+ int j = cmd_parse_arg(cmd, argc - i, &argv[i]);
+ if (j < 0){
+ break;
+ }
+ i += j;
+ }
+
+ if ((cmd->filename != NULL)
+ && (cmd->filetype == NULL)) {
+ cmd->filetype = strrchr(cmd->filename, '.');
+ if (cmd->filetype != NULL) {
+ cmd->filetype++;
+ }
+ }
+
+ return i;
+}
+
#define ID_RIFF 0x46464952
#define ID_WAVE 0x45564157
#define ID_FMT 0x20746d66
@@ -58,135 +168,61 @@ struct chunk_fmt {
uint16_t bits_per_sample;
};
-static int close = 0;
+struct ctx {
+ struct pcm *pcm;
-void play_sample(FILE *file, unsigned int card, unsigned int device, unsigned int channels,
- unsigned int rate, unsigned int bits, unsigned int period_size,
- unsigned int period_count);
+ struct riff_wave_header wave_header;
+ struct chunk_header chunk_header;
+ struct chunk_fmt chunk_fmt;
-void stream_close(int sig)
-{
- /* allow the stream to be closed gracefully */
- signal(sig, SIG_IGN);
- close = 1;
-}
+ FILE *file;
+};
-int main(int argc, char **argv)
+int ctx_init(struct ctx* ctx, const struct cmd *cmd)
{
- FILE *file;
- struct riff_wave_header riff_wave_header;
- struct chunk_header chunk_header;
- struct chunk_fmt chunk_fmt;
- unsigned int device = 0;
- unsigned int card = 0;
- unsigned int period_size = 1024;
- unsigned int period_count = 4;
- unsigned int channels = 2;
- unsigned int rate = 48000;
- unsigned int bits = 16;
- unsigned int is_raw = 0; /* Default wav file */
- char *filename;
- int more_chunks = 1;
+ unsigned int bits = cmd->bits;
+ struct pcm_config config = cmd->config;
- if (argc < 2) {
- fprintf(stderr, "Usage1: %s file.wav [-D card] [-d device] [-p period_size]"
- " [-n n_periods] \n", argv[0]);
- fprintf(stderr, "Usage2: %s file.raw [-D card] [-d device] [-p period_size] "
- "[-n n_periods] [-c channels] [-r rate] [-b bits] -i raw \n", argv[0]);
- return 1;
+ if (cmd->filename == NULL) {
+ fprintf(stderr, "filename not specified\n");
+ return -1;
}
- filename = argv[1];
- file = fopen(filename, "rb");
- if (!file) {
- fprintf(stderr, "Unable to open file '%s'\n", filename);
- return 1;
+ ctx->file = fopen(cmd->filename, "rb");
+ if (ctx->file == NULL) {
+ fprintf(stderr, "failed to open '%s'\n", cmd->filename);
+ return -1;
}
- /* parse command line arguments */
- argv += 2;
- while (*argv) {
- if (strcmp(*argv, "-d") == 0) {
- argv++;
- if (*argv)
- device = atoi(*argv);
- }
- if (strcmp(*argv, "-p") == 0) {
- argv++;
- if (*argv)
- period_size = atoi(*argv);
- }
- if (strcmp(*argv, "-n") == 0) {
- argv++;
- if (*argv)
- period_count = atoi(*argv);
- }
- if (strcmp(*argv, "-D") == 0) {
- argv++;
- if (*argv)
- card = atoi(*argv);
- }
- if (strcmp(*argv, "-c") == 0) {
- argv++;
- if (*argv)
- channels = atoi(*argv);
- }
- if (strcmp(*argv, "-r") == 0) {
- argv++;
- if (*argv)
- rate = atoi(*argv);
+ if ((cmd->filetype != NULL) && (strcmp(cmd->filetype, "wav") == 0)) {
+ 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 (strcmp(*argv, "-b") == 0) {
- argv++;
- if (*argv)
- bits = atoi(*argv);
- }
- if (strcmp(*argv, "-i") == 0) {
- argv++;
- if (*argv) {
- if (strcasecmp(*argv, "raw") == 0) {
- is_raw = 1;
- } else if (strcasecmp(*argv, "wav") == 0) {
- is_raw = 0;
- } else {
- fprintf(stderr, "Error: file type '%s' not supported\n", *argv);
- fclose(file);
- return 1;
- }
- }
- }
- if (*argv)
- argv++;
- }
-
- if ( !is_raw ) {
- if (fread(&riff_wave_header, sizeof(riff_wave_header), 1, file) != 1){
- fprintf(stderr, "Error: '%s' does not contain a riff/wave header\n", filename);
- fclose(file);
- return 1;
- }
- if ((riff_wave_header.riff_id != ID_RIFF) ||
- (riff_wave_header.wave_id != ID_WAVE)) {
- fprintf(stderr, "Error: '%s' is not a riff/wave file\n", filename);
- fclose(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(&chunk_header, sizeof(chunk_header), 1, file) != 1){
- fprintf(stderr, "Error: '%s' does not contain a data chunk\n", filename);
- fclose(file);
- return 1;
+ 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 (chunk_header.id) {
+ switch (ctx->chunk_header.id) {
case ID_FMT:
- if (fread(&chunk_fmt, sizeof(chunk_fmt), 1, file) != 1){
- fprintf(stderr, "Error: '%s' has incomplete format chunk\n", filename);
- fclose(file);
- return 1;
+ 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 (chunk_header.sz > sizeof(chunk_fmt))
- fseek(file, chunk_header.sz - sizeof(chunk_fmt), SEEK_CUR);
+ 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 */
@@ -194,21 +230,120 @@ int main(int argc, char **argv)
break;
default:
/* Unknown chunk, skip bytes */
- fseek(file, chunk_header.sz, SEEK_CUR);
+ fseek(ctx->file, ctx->chunk_header.sz, SEEK_CUR);
}
} while (more_chunks);
- channels = chunk_fmt.num_channels;
- rate = chunk_fmt.sample_rate;
- bits = chunk_fmt.bits_per_sample;
+ config.channels = ctx->chunk_fmt.num_channels;
+ config.rate = ctx->chunk_fmt.sample_rate;
+ bits = ctx->chunk_fmt.bits_per_sample;
}
- play_sample(file, card, device, channels, rate, bits, period_size, period_count);
+ if (bits == 8) {
+ config.format = PCM_FORMAT_S8;
+ } else if (bits == 16) {
+ config.format = PCM_FORMAT_S16_LE;
+ } else if (bits == 24) {
+ config.format = PCM_FORMAT_S24_3LE;
+ } else if (bits == 32) {
+ config.format = PCM_FORMAT_S32_LE;
+ } else {
+ fprintf(stderr, "bit count '%u' not supported\n", bits);
+ fclose(ctx->file);
+ return -1;
+ }
- fclose(file);
+ ctx->pcm = pcm_open(cmd->card,
+ cmd->device,
+ cmd->flags,
+ &config);
+ if (ctx->pcm == NULL) {
+ fprintf(stderr, "failed to allocate memory for pcm\n");
+ fclose(ctx->file);
+ return -1;
+ } else if (!pcm_is_ready(ctx->pcm)) {
+ fprintf(stderr, "failed to open for pcm %u,%u\n", cmd->card, cmd->device);
+ 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 device to receive the audio\n");
+ fprintf(stderr, "-d | --device <device number> The card 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, "-M | --mmap Use memory mapped IO to play audio\n");
+}
+
+int main(int argc, const char **argv)
+{
+ struct cmd cmd;
+ struct ctx ctx;
+
+ if (argc < 2) {
+ print_usage(argv[0]);
+ return EXIT_FAILURE;
+ }
+
+ cmd_init(&cmd);
+ if (cmd_parse_args(&cmd, argc - 1, &argv[1]) < 0) {
+ return EXIT_FAILURE;
+ }
+
+ if (ctx_init(&ctx, &cmd) < 0) {
+ return EXIT_FAILURE;
+ }
+
+ /* TODO get parameters from context */
+ printf("playing '%s': %u ch, %u hz, %u bit\n",
+ cmd.filename,
+ cmd.config.channels,
+ cmd.config.rate,
+ cmd.bits);
+
+ 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)
{
@@ -233,89 +368,55 @@ int check_param(struct pcm_params *params, unsigned int param, unsigned int valu
return is_within_bounds;
}
-int sample_is_playable(unsigned int card, unsigned int device, unsigned int channels,
- unsigned int rate, unsigned int bits, unsigned int period_size,
- unsigned int period_count)
+int sample_is_playable(const struct cmd *cmd)
{
struct pcm_params *params;
int can_play;
- params = pcm_params_get(card, device, PCM_OUT);
+ params = pcm_params_get(cmd->card, cmd->device, PCM_OUT);
if (params == NULL) {
- fprintf(stderr, "Unable to open PCM device %u.\n", device);
+ fprintf(stderr, "unable to open PCM %u,%u\n", cmd->card, cmd->device);
return 0;
}
- can_play = check_param(params, PCM_PARAM_RATE, rate, "Sample rate", "Hz");
- can_play &= check_param(params, PCM_PARAM_CHANNELS, channels, "Sample", " channels");
- can_play &= check_param(params, PCM_PARAM_SAMPLE_BITS, bits, "Bitrate", " bits");
- can_play &= check_param(params, PCM_PARAM_PERIOD_SIZE, period_size, "Period size", "Hz");
- can_play &= check_param(params, PCM_PARAM_PERIODS, period_count, "Period count", "Hz");
+ 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", "");
+ can_play &= check_param(params, PCM_PARAM_PERIODS, cmd->config.period_count, "period count", "");
pcm_params_free(params);
return can_play;
}
-void play_sample(FILE *file, unsigned int card, unsigned int device, unsigned int channels,
- unsigned int rate, unsigned int bits, unsigned int period_size,
- unsigned int period_count)
+int play_sample(struct ctx *ctx)
{
- struct pcm_config config;
- struct pcm *pcm;
char *buffer;
int size;
int num_read;
- memset(&config, 0, sizeof(config));
- config.channels = channels;
- config.rate = rate;
- config.period_size = period_size;
- config.period_count = period_count;
- if (bits == 32)
- config.format = PCM_FORMAT_S32_LE;
- else if (bits == 16)
- config.format = PCM_FORMAT_S16_LE;
- config.start_threshold = 0;
- config.stop_threshold = 0;
- config.silence_threshold = 0;
-
- if (!sample_is_playable(card, device, channels, rate, bits, period_size, period_count)) {
- return;
- }
-
- pcm = pcm_open(card, device, PCM_OUT, &config);
- if (!pcm || !pcm_is_ready(pcm)) {
- fprintf(stderr, "Unable to open PCM device %u (%s)\n",
- device, pcm_get_error(pcm));
- return;
- }
-
- size = pcm_frames_to_bytes(pcm, pcm_get_buffer_size(pcm));
+ size = pcm_frames_to_bytes(ctx->pcm, pcm_get_buffer_size(ctx->pcm));
buffer = malloc(size);
if (!buffer) {
- fprintf(stderr, "Unable to allocate %d bytes\n", size);
- free(buffer);
- pcm_close(pcm);
- return;
+ fprintf(stderr, "unable to allocate %d bytes\n", size);
+ return -1;
}
- printf("Playing sample: %u ch, %u hz, %u bit\n", channels, rate, bits);
-
/* catch ctrl-c to shutdown cleanly */
signal(SIGINT, stream_close);
do {
- num_read = fread(buffer, 1, size, file);
+ num_read = fread(buffer, 1, size, ctx->file);
if (num_read > 0) {
- if (pcm_write(pcm, buffer, num_read)) {
- fprintf(stderr, "Error playing sample\n");
+ if (pcm_write(ctx->pcm, buffer, num_read)) {
+ fprintf(stderr, "error playing sample\n");
break;
}
}
} while (!close && num_read > 0);
free(buffer);
- pcm_close(pcm);
+ return 0;
}
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