Initial version of tinyalsa
From git://github.com/tinyalsa/tinyalsa.git 193b1c3b
Change-Id: I8971581d4867bd785ac628638679d2c09c79169f
diff --git a/tinyplay.c b/tinyplay.c
new file mode 100644
index 0000000..2523e54
--- /dev/null
+++ b/tinyplay.c
@@ -0,0 +1,145 @@
+/* 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 <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+
+#define ID_RIFF 0x46464952
+#define ID_WAVE 0x45564157
+#define ID_FMT 0x20746d66
+#define ID_DATA 0x61746164
+
+#define FORMAT_PCM 1
+
+struct wav_header {
+ uint32_t riff_id;
+ uint32_t riff_sz;
+ uint32_t riff_fmt;
+ uint32_t fmt_id;
+ uint32_t fmt_sz;
+ 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;
+ uint32_t data_id;
+ uint32_t data_sz;
+};
+
+void play_sample(FILE *file, unsigned int channels, unsigned int rate,
+ unsigned int bits);
+
+int main(int argc, char **argv)
+{
+ FILE *file;
+ struct wav_header header;
+
+ if (argc != 2) {
+ fprintf(stderr, "Usage: %s <file.wav>\n", argv[0]);
+ return 1;
+ }
+
+ file = fopen(argv[1], "rb");
+ if (!file) {
+ fprintf(stderr, "Unable to open file '%s'\n", argv[1]);
+ return 1;
+ }
+
+ fread(&header, sizeof(struct wav_header), 1, file);
+
+ if ((header.riff_id != ID_RIFF) ||
+ (header.riff_fmt != ID_WAVE) ||
+ (header.fmt_id != ID_FMT) ||
+ (header.audio_format != FORMAT_PCM) ||
+ (header.fmt_sz != 16)) {
+ fprintf(stderr, "Error: '%s' is not a PCM riff/wave file\n", argv[1]);
+ fclose(file);
+ return 1;
+ }
+
+ play_sample(file, header.num_channels, header.sample_rate,
+ header.bits_per_sample);
+
+ fclose(file);
+
+ return 0;
+}
+
+void play_sample(FILE *file, unsigned int channels, unsigned int rate,
+ unsigned int bits)
+{
+ struct pcm_config config;
+ struct pcm *pcm;
+ char *buffer;
+ int size;
+ int num_read;
+
+ config.channels = channels;
+ config.rate = rate;
+ config.period_size = 1024;
+ config.period_count = 4;
+ if (bits == 32)
+ config.format = PCM_FORMAT_S32_LE;
+ else if (bits == 16)
+ config.format = PCM_FORMAT_S16_LE;
+
+ pcm = pcm_open(0, 0, PCM_OUT, &config);
+ if (!pcm || !pcm_is_ready(pcm)) {
+ fprintf(stderr, "Unable to open PCM device (%s)\n",
+ pcm_get_error(pcm));
+ return;
+ }
+
+ size = pcm_get_buffer_size(pcm);
+ buffer = malloc(size);
+ if (!buffer) {
+ fprintf(stderr, "Unable to allocate %d bytes\n", size);
+ free(buffer);
+ pcm_close(pcm);
+ return;
+ }
+
+ printf("Playing sample: %u ch, %u hz, %u bit\n", channels, rate, bits);
+
+ do {
+ num_read = fread(buffer, 1, size, file);
+ if (num_read > 0) {
+ if (pcm_write(pcm, buffer, num_read)) {
+ fprintf(stderr, "Error playing sample\n");
+ break;
+ }
+ }
+ } while (num_read > 0);
+
+ free(buffer);
+ pcm_close(pcm);
+}
+
