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-rw-r--r--utils/tinyplay.c110
1 files changed, 75 insertions, 35 deletions
diff --git a/utils/tinyplay.c b/utils/tinyplay.c
index 4c7ccf6..96d0f60 100644
--- a/utils/tinyplay.c
+++ b/utils/tinyplay.c
@@ -27,11 +27,12 @@
*/
#include <tinyalsa/asoundlib.h>
+#include <signal.h>
+#include <stdbool.h>
+#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
-#include <stdint.h>
#include <string.h>
-#include <signal.h>
#define OPTPARSE_IMPLEMENTATION
#include "optparse.h"
@@ -44,6 +45,7 @@ struct cmd {
int flags;
struct pcm_config config;
unsigned int bits;
+ bool is_float;
};
void cmd_init(struct cmd *cmd)
@@ -63,6 +65,7 @@ void cmd_init(struct cmd *cmd)
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
@@ -70,6 +73,9 @@ void cmd_init(struct cmd *cmd)
#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;
@@ -100,10 +106,32 @@ struct ctx {
FILE *file;
};
-int ctx_init(struct ctx* ctx, const struct cmd *cmd)
+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;
+ struct pcm_config *config = &cmd->config;
+ bool is_float = cmd->is_float;
if (cmd->filename == NULL) {
fprintf(stderr, "filename not specified\n");
@@ -120,7 +148,7 @@ int ctx_init(struct ctx* ctx, const struct cmd *cmd)
return -1;
}
- if ((cmd->filetype != NULL) && (strcmp(cmd->filetype, "wav") == 0)) {
+ 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);
@@ -159,35 +187,31 @@ int ctx_init(struct ctx* ctx, const struct cmd *cmd)
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;
+ 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 (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;
+ if (is_float) {
+ config->format = PCM_FORMAT_FLOAT_LE;
} else {
- fprintf(stderr, "bit count '%u' not supported\n", bits);
- fclose(ctx->file);
- return -1;
+ 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 (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);
+ 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;
@@ -228,10 +252,11 @@ void print_usage(const char *argv0)
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, "-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");
}
@@ -250,6 +275,7 @@ int main(int argc, char **argv)
{ "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 }
@@ -303,6 +329,15 @@ int main(int argc, char **argv)
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;
@@ -329,12 +364,13 @@ int main(int argc, char **argv)
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);
+ 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);
@@ -399,6 +435,7 @@ int play_sample(struct ctx *ctx)
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);
@@ -421,15 +458,18 @@ int play_sample(struct ctx *ctx)
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) {
- if (pcm_writei(ctx->pcm, buffer,
- pcm_bytes_to_frames(ctx->pcm, num_read)) < 0) {
- fprintf(stderr, "error playing sample\n");
+ 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);
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-22 10:11:13 +0000