initial audio HAL implementation for mako
alsa_sound is imported from codeaurora at:
c1217338f349fe746e0933fcf9b1b288b532808d
[remote "quic"]
url = git://git-android.quicinc.com/platform/hardware/alsa_sound.git
review = review-android.quicinc.com
projectname = platform/hardware/alsa_sound
fetch = +refs/heads/*:refs/remotes/quic/*
Change-Id: Ic985cc3a1088c3957b6e2ac5537e2c36caaf7212
Signed-off-by: Iliyan Malchev <malchev@google.com>
diff --git a/libalsa-intf/aplay.c b/libalsa-intf/aplay.c
new file mode 100644
index 0000000..738ad24
--- /dev/null
+++ b/libalsa-intf/aplay.c
@@ -0,0 +1,665 @@
+/*
+** Copyright 2010, The Android Open-Source Project
+** Copyright (c) 2011-2012, Code Aurora Forum. All rights reserved.
+**
+** Licensed under the Apache License, Version 2.0 (the "License");
+** you may not use this file except in compliance with the License.
+** You may obtain a copy of the License at
+**
+** http://www.apache.org/licenses/LICENSE-2.0
+**
+** Unless required by applicable law or agreed to in writing, software
+** distributed under the License is distributed on an "AS IS" BASIS,
+** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+** See the License for the specific language governing permissions and
+** limitations under the License.
+*/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <stdint.h>
+#include <string.h>
+#include <errno.h>
+#include <sys/poll.h>
+#include <sys/ioctl.h>
+#include <getopt.h>
+
+#include <sound/asound.h>
+#include "alsa_audio.h"
+
+#ifndef ANDROID
+#define strlcat g_strlcat
+#define strlcpy g_strlcpy
+#endif
+
+#define ID_RIFF 0x46464952
+#define ID_WAVE 0x45564157
+#define ID_FMT 0x20746d66
+#define ID_DATA 0x61746164
+
+#define FORMAT_PCM 1
+#define LOG_NDEBUG 1
+static pcm_flag = 1;
+static debug = 0;
+static uint32_t play_max_sz = 2147483648LL;
+static int format = SNDRV_PCM_FORMAT_S16_LE;
+static int period = 0;
+static int compressed = 0;
+static char *compr_codec;
+static int piped = 0;
+
+static struct option long_options[] =
+{
+ {"pcm", 0, 0, 'P'},
+ {"debug", 0, 0, 'V'},
+ {"Mmap", 0, 0, 'M'},
+ {"HW", 1, 0, 'D'},
+ {"Rate", 1, 0, 'R'},
+ {"channel", 1, 0, 'C'},
+ {"format", 1, 0, 'F'},
+ {"period", 1, 0, 'B'},
+ {"compressed", 0, 0, 'T'},
+ {0, 0, 0, 0}
+};
+
+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; /* sample_rate * num_channels * bps / 8 */
+ uint16_t block_align; /* num_channels * bps / 8 */
+ uint16_t bits_per_sample;
+ uint32_t data_id;
+ uint32_t data_sz;
+};
+
+static int set_params(struct pcm *pcm)
+{
+ struct snd_pcm_hw_params *params;
+ struct snd_pcm_sw_params *sparams;
+
+ unsigned long periodSize, bufferSize, reqBuffSize;
+ unsigned int periodTime, bufferTime;
+ unsigned int requestedRate = pcm->rate;
+ int channels = (pcm->flags & PCM_MONO) ? 1 : ((pcm->flags & PCM_5POINT1)? 6 : 2 );
+
+ params = (struct snd_pcm_hw_params*) calloc(1, sizeof(struct snd_pcm_hw_params));
+ if (!params) {
+ fprintf(stderr, "Aplay:Failed to allocate ALSA hardware parameters!");
+ return -ENOMEM;
+ }
+
+ param_init(params);
+
+ param_set_mask(params, SNDRV_PCM_HW_PARAM_ACCESS,
+ (pcm->flags & PCM_MMAP)? SNDRV_PCM_ACCESS_MMAP_INTERLEAVED : SNDRV_PCM_ACCESS_RW_INTERLEAVED);
+ param_set_mask(params, SNDRV_PCM_HW_PARAM_FORMAT, pcm->format);
+ param_set_mask(params, SNDRV_PCM_HW_PARAM_SUBFORMAT,
+ SNDRV_PCM_SUBFORMAT_STD);
+ if (period)
+ param_set_min(params, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, period);
+ else
+ param_set_min(params, SNDRV_PCM_HW_PARAM_PERIOD_TIME, 10);
+ param_set_int(params, SNDRV_PCM_HW_PARAM_SAMPLE_BITS, 16);
+ param_set_int(params, SNDRV_PCM_HW_PARAM_FRAME_BITS,
+ pcm->channels * 16);
+ param_set_int(params, SNDRV_PCM_HW_PARAM_CHANNELS,
+ pcm->channels);
+ param_set_int(params, SNDRV_PCM_HW_PARAM_RATE, pcm->rate);
+ param_set_hw_refine(pcm, params);
+
+ if (param_set_hw_params(pcm, params)) {
+ fprintf(stderr, "Aplay:cannot set hw params\n");
+ return -errno;
+ }
+ if (debug)
+ param_dump(params);
+
+ pcm->buffer_size = pcm_buffer_size(params);
+ pcm->period_size = pcm_period_size(params);
+ pcm->period_cnt = pcm->buffer_size/pcm->period_size;
+ if (debug) {
+ fprintf (stderr,"period_cnt = %d\n", pcm->period_cnt);
+ fprintf (stderr,"period_size = %d\n", pcm->period_size);
+ fprintf (stderr,"buffer_size = %d\n", pcm->buffer_size);
+ }
+ sparams = (struct snd_pcm_sw_params*) calloc(1, sizeof(struct snd_pcm_sw_params));
+ if (!sparams) {
+ fprintf(stderr, "Aplay:Failed to allocate ALSA software parameters!\n");
+ return -ENOMEM;
+ }
+ // Get the current software parameters
+ sparams->tstamp_mode = SNDRV_PCM_TSTAMP_NONE;
+ sparams->period_step = 1;
+
+ sparams->avail_min = pcm->period_size/(channels * 2) ;
+ sparams->start_threshold = pcm->period_size/(channels * 2) ;
+ sparams->stop_threshold = pcm->buffer_size ;
+ sparams->xfer_align = pcm->period_size/(channels * 2) ; /* needed for old kernels */
+
+ sparams->silence_size = 0;
+ sparams->silence_threshold = 0;
+
+ if (param_set_sw_params(pcm, sparams)) {
+ fprintf(stderr, "Aplay:cannot set sw params");
+ return -errno;
+ }
+ if (debug) {
+ fprintf (stderr,"sparams->avail_min= %lu\n", sparams->avail_min);
+ fprintf (stderr," sparams->start_threshold= %lu\n", sparams->start_threshold);
+ fprintf (stderr," sparams->stop_threshold= %lu\n", sparams->stop_threshold);
+ fprintf (stderr," sparams->xfer_align= %lu\n", sparams->xfer_align);
+ fprintf (stderr," sparams->boundary= %lu\n", sparams->boundary);
+ }
+ return 0;
+}
+
+static int play_file(unsigned rate, unsigned channels, int fd,
+ unsigned flags, const char *device, unsigned data_sz)
+{
+ struct pcm *pcm;
+ struct mixer *mixer;
+ struct pcm_ctl *ctl = NULL;
+ unsigned bufsize;
+ char *data;
+ long avail;
+ long frames;
+ int nfds = 1;
+ struct snd_xferi x;
+ unsigned offset = 0;
+ int err;
+ static int start = 0;
+ struct pollfd pfd[1];
+ int remainingData = 0;
+
+ flags |= PCM_OUT;
+
+ if (channels == 1)
+ flags |= PCM_MONO;
+ else if (channels == 6)
+ flags |= PCM_5POINT1;
+ else
+ flags |= PCM_STEREO;
+
+ if (debug)
+ flags |= DEBUG_ON;
+ else
+ flags |= DEBUG_OFF;
+
+ pcm = pcm_open(flags, device);
+ if (pcm < 0)
+ return pcm;
+
+ if (!pcm_ready(pcm)) {
+ pcm_close(pcm);
+ return -EBADFD;
+ }
+
+ if (compressed) {
+ struct snd_compr_caps compr_cap;
+ struct snd_compr_params compr_params;
+ if (ioctl(pcm->fd, SNDRV_COMPRESS_GET_CAPS, &compr_cap)) {
+ fprintf(stderr, "Aplay: SNDRV_COMPRESS_GET_CAPS, failed Error no %d \n", errno);
+ pcm_close(pcm);
+ return -errno;
+ }
+ if (!period)
+ period = compr_cap.min_fragment_size;
+ switch (get_compressed_format(compr_codec)) {
+ case FORMAT_MP3:
+ compr_params.codec.id = compr_cap.codecs[FORMAT_MP3];
+ break;
+ case FORMAT_AC3_PASS_THROUGH:
+ compr_params.codec.id = compr_cap.codecs[FORMAT_AC3_PASS_THROUGH];
+ printf("codec -d = %x\n", compr_params.codec.id);
+ break;
+ default:
+ break;
+ }
+ if (ioctl(pcm->fd, SNDRV_COMPRESS_SET_PARAMS, &compr_params)) {
+ fprintf(stderr, "Aplay: SNDRV_COMPRESS_SET_PARAMS,failed Error no %d \n", errno);
+ pcm_close(pcm);
+ return -errno;
+ }
+ }
+ pcm->channels = channels;
+ pcm->rate = rate;
+ pcm->flags = flags;
+ pcm->format = format;
+ if (set_params(pcm)) {
+ fprintf(stderr, "Aplay:params setting failed\n");
+ pcm_close(pcm);
+ return -errno;
+ }
+
+ if (!pcm_flag) {
+ if (pcm_prepare(pcm)) {
+ fprintf(stderr, "Aplay:Failed in pcm_prepare\n");
+ pcm_close(pcm);
+ return -errno;
+ }
+ if (ioctl(pcm->fd, SNDRV_PCM_IOCTL_START)) {
+ fprintf(stderr, "Aplay: Hostless IOCTL_START Error no %d \n", errno);
+ pcm_close(pcm);
+ return -errno;
+ }
+ while(1);
+ }
+
+ remainingData = data_sz;
+
+ if (flags & PCM_MMAP) {
+ u_int8_t *dst_addr = NULL;
+ struct snd_pcm_sync_ptr *sync_ptr1 = pcm->sync_ptr;
+ if (mmap_buffer(pcm)) {
+ fprintf(stderr, "Aplay:params setting failed\n");
+ pcm_close(pcm);
+ return -errno;
+ }
+ if (pcm_prepare(pcm)) {
+ fprintf(stderr, "Aplay:Failed in pcm_prepare\n");
+ pcm_close(pcm);
+ return -errno;
+ }
+
+ bufsize = pcm->period_size;
+ if (debug)
+ fprintf(stderr, "Aplay:bufsize = %d\n", bufsize);
+
+ pfd[0].fd = pcm->timer_fd;
+ pfd[0].events = POLLIN;
+
+ frames = (pcm->flags & PCM_MONO) ? (bufsize / 2) : (bufsize / 4);
+ for (;;) {
+ if (!pcm->running) {
+ if (pcm_prepare(pcm)) {
+ fprintf(stderr, "Aplay:Failed in pcm_prepare\n");
+ pcm_close(pcm);
+ return -errno;
+ }
+ pcm->running = 1;
+ start = 0;
+ }
+ /* Sync the current Application pointer from the kernel */
+ pcm->sync_ptr->flags = SNDRV_PCM_SYNC_PTR_APPL | SNDRV_PCM_SYNC_PTR_AVAIL_MIN;//SNDRV_PCM_SYNC_PTR_HWSYNC;
+ err = sync_ptr(pcm);
+ if (err == EPIPE) {
+ fprintf(stderr, "Aplay:Failed in sync_ptr \n");
+ /* we failed to make our window -- try to restart */
+ pcm->underruns++;
+ pcm->running = 0;
+ continue;
+ }
+ /*
+ * Check for the available buffer in driver. If available buffer is
+ * less than avail_min we need to wait
+ */
+ avail = pcm_avail(pcm);
+ if (avail < 0) {
+ fprintf(stderr, "Aplay:Failed in pcm_avail\n");
+ pcm_close(pcm);
+ return avail;
+ }
+ if (avail < pcm->sw_p->avail_min) {
+ poll(pfd, nfds, TIMEOUT_INFINITE);
+ continue;
+ }
+ /*
+ * Now that we have buffer size greater than avail_min available to
+ * to be written we need to calcutate the buffer offset where we can
+ * start writting.
+ */
+ dst_addr = dst_address(pcm);
+
+ if (debug) {
+ fprintf(stderr, "dst_addr = 0x%08x\n", dst_addr);
+ fprintf(stderr, "Aplay:avail = %d frames = %d\n",avail, frames);
+ fprintf(stderr, "Aplay:sync_ptr->s.status.hw_ptr %ld pcm->buffer_size %d sync_ptr->c.control.appl_ptr %ld\n",
+ pcm->sync_ptr->s.status.hw_ptr,
+ pcm->buffer_size,
+ pcm->sync_ptr->c.control.appl_ptr);
+ }
+
+ /*
+ * Read from the file to the destination buffer in kernel mmaped buffer
+ * This reduces a extra copy of intermediate buffer.
+ */
+ memset(dst_addr, 0x0, bufsize);
+
+ if (data_sz && !piped) {
+ if (remainingData < bufsize) {
+ bufsize = remainingData;
+ frames = (pcm->flags & PCM_MONO) ? (remainingData / 2) : (remainingData / 4);
+ }
+ }
+
+ err = read(fd, dst_addr , bufsize);
+ if (debug)
+ fprintf(stderr, "read %d bytes from file\n", err);
+ if (err <= 0)
+ break;
+
+ if (data_sz && !piped) {
+ remainingData -= bufsize;
+ if (remainingData <= 0)
+ break;
+ }
+
+ /*
+ * Increment the application pointer with data written to kernel.
+ * Update kernel with the new sync pointer.
+ */
+ pcm->sync_ptr->c.control.appl_ptr += frames;
+ pcm->sync_ptr->flags = 0;
+
+ err = sync_ptr(pcm);
+ if (err == EPIPE) {
+ fprintf(stderr, "Aplay:Failed in sync_ptr 2 \n");
+ /* we failed to make our window -- try to restart */
+ pcm->underruns++;
+ pcm->running = 0;
+ continue;
+ }
+
+ if (debug) {
+ fprintf(stderr, "Aplay:sync_ptr->s.status.hw_ptr %ld sync_ptr->c.control.appl_ptr %ld\n",
+ pcm->sync_ptr->s.status.hw_ptr,
+ pcm->sync_ptr->c.control.appl_ptr);
+ if (compressed && start) {
+ struct snd_compr_tstamp tstamp;
+ if (ioctl(pcm->fd, SNDRV_COMPRESS_TSTAMP, &tstamp))
+ fprintf(stderr, "Aplay: failed SNDRV_COMPRESS_TSTAMP\n");
+ else
+ fprintf(stderr, "timestamp = %lld\n", tstamp.timestamp);
+ }
+ }
+ /*
+ * If we have reached start threshold of buffer prefill,
+ * its time to start the driver.
+ */
+ if(start)
+ goto start_done;
+ if (ioctl(pcm->fd, SNDRV_PCM_IOCTL_START)) {
+ err = -errno;
+ if (errno == EPIPE) {
+ fprintf(stderr, "Aplay:Failed in SNDRV_PCM_IOCTL_START\n");
+ /* we failed to make our window -- try to restart */
+ pcm->underruns++;
+ pcm->running = 0;
+ continue;
+ } else {
+ fprintf(stderr, "Aplay:Error no %d \n", errno);
+ pcm_close(pcm);
+ return -errno;
+ }
+ } else
+ start = 1;
+
+start_done:
+ offset += frames;
+ }
+ while(1) {
+ pcm->sync_ptr->flags = SNDRV_PCM_SYNC_PTR_APPL | SNDRV_PCM_SYNC_PTR_AVAIL_MIN;//SNDRV_PCM_SYNC_PTR_HWSYNC;
+ sync_ptr(pcm);
+ /*
+ * Check for the available buffer in driver. If available buffer is
+ * less than avail_min we need to wait
+ */
+ if (pcm->sync_ptr->s.status.hw_ptr >= pcm->sync_ptr->c.control.appl_ptr) {
+ fprintf(stderr, "Aplay:sync_ptr->s.status.hw_ptr %ld sync_ptr->c.control.appl_ptr %ld\n",
+ pcm->sync_ptr->s.status.hw_ptr,
+ pcm->sync_ptr->c.control.appl_ptr);
+ break;
+ } else
+ poll(pfd, nfds, TIMEOUT_INFINITE);
+ }
+ } else {
+ if (pcm_prepare(pcm)) {
+ fprintf(stderr, "Aplay:Failed in pcm_prepare\n");
+ pcm_close(pcm);
+ return -errno;
+ }
+
+ bufsize = pcm->period_size;
+
+ data = calloc(1, bufsize);
+ if (!data) {
+ fprintf(stderr, "Aplay:could not allocate %d bytes\n", bufsize);
+ pcm_close(pcm);
+ return -ENOMEM;
+ }
+
+ if (data_sz && !piped) {
+ if (remainingData < bufsize)
+ bufsize = remainingData;
+ }
+
+ while (read(fd, data, bufsize) > 0) {
+ if (pcm_write(pcm, data, bufsize)){
+ fprintf(stderr, "Aplay: pcm_write failed\n");
+ free(data);
+ pcm_close(pcm);
+ return -errno;
+ }
+ memset(data, 0, bufsize);
+
+ if (data_sz && !piped) {
+ remainingData -= bufsize;
+ if (remainingData <= 0)
+ break;
+ if (remainingData < bufsize)
+ bufsize = remainingData;
+ }
+ }
+ free(data);
+ }
+ fprintf(stderr, "Aplay: Done playing\n");
+ pcm_close(pcm);
+ return 0;
+}
+
+int play_raw(const char *fg, int rate, int ch, const char *device, const char *fn)
+{
+ int fd;
+ unsigned flag = 0;
+
+ if(!fn) {
+ fd = fileno(stdin);
+ piped = 1;
+ } else {
+ fd = open(fn, O_RDONLY);
+ if (fd < 0) {
+ fprintf(stderr, "Aplay:aplay: cannot open '%s'\n", fn);
+ return fd;
+ }
+ }
+
+ if (!strncmp(fg, "M", sizeof("M")))
+ flag = PCM_MMAP;
+ else if (!strncmp(fg, "N", sizeof("N")))
+ flag = PCM_NMMAP;
+
+ fprintf(stderr, "aplay: Playing '%s': format %s ch = %d\n",
+ fn, get_format_desc(format), ch );
+ return play_file(rate, ch, fd, flag, device, 0);
+}
+
+int play_wav(const char *fg, int rate, int ch, const char *device, const char *fn)
+{
+ struct wav_header hdr;
+ int fd;
+ unsigned flag = 0;
+
+ if (pcm_flag) {
+ if(!fn) {
+ fd = fileno(stdin);
+ piped = 1;
+ } else {
+ fd = open(fn, O_RDONLY);
+ if (fd < 0) {
+ fprintf(stderr, "Aplay:aplay: cannot open '%s'\n", fn);
+ return fd;
+ }
+ }
+ if (compressed) {
+ hdr.sample_rate = rate;
+ hdr.num_channels = ch;
+ hdr.data_sz = 0;
+ goto ignore_header;
+ }
+
+ if (read(fd, &hdr, sizeof(hdr)) != sizeof(hdr)) {
+ fprintf(stderr, "Aplay:aplay: cannot read header\n");
+ return -errno;
+ }
+
+ if ((hdr.riff_id != ID_RIFF) ||
+ (hdr.riff_fmt != ID_WAVE) ||
+ (hdr.fmt_id != ID_FMT)) {
+ fprintf(stderr, "Aplay:aplay: '%s' is not a riff/wave file\n", fn);
+ return -EINVAL;
+ }
+ if ((hdr.audio_format != FORMAT_PCM) ||
+ (hdr.fmt_sz != 16)) {
+ fprintf(stderr, "Aplay:aplay: '%s' is not pcm format\n", fn);
+ return -EINVAL;
+ }
+ if (hdr.bits_per_sample != 16) {
+ fprintf(stderr, "Aplay:aplay: '%s' is not 16bit per sample\n", fn);
+ return -EINVAL;
+ }
+ } else {
+ fd = -EBADFD;
+ hdr.sample_rate = rate;
+ hdr.num_channels = ch;
+ hdr.data_sz = 0;
+ }
+
+ignore_header:
+ if (!strncmp(fg, "M", sizeof("M")))
+ flag = PCM_MMAP;
+ else if (!strncmp(fg, "N", sizeof("N")))
+ flag = PCM_NMMAP;
+ fprintf(stderr, "aplay: Playing '%s':%s\n", fn, get_format_desc(format) );
+
+ return play_file(hdr.sample_rate, hdr.num_channels, fd, flag, device, hdr.data_sz);
+}
+
+int main(int argc, char **argv)
+{
+ int option_index = 0;
+ int c,i;
+ int ch = 2;
+ int rate = 44100;
+ char *mmap = "N";
+ char *device = "hw:0,0";
+ char *filename;
+ int rc = 0;
+
+ if (argc <2) {
+ printf("\nUsage: aplay [options] <file>\n"
+ "options:\n"
+ "-D <hw:C,D> -- Alsa PCM by name\n"
+ "-M -- Mmap stream\n"
+ "-P -- Hostless steam[No PCM]\n"
+ "-C -- Channels\n"
+ "-R -- Rate\n"
+ "-V -- verbose\n"
+ "-F -- Format\n"
+ "-B -- Period\n"
+ "-T <MP3, AAC, AC3_PASS_THROUGH> -- Compressed\n"
+ "<file> \n");
+ fprintf(stderr, "Formats Supported:\n");
+ for (i = 0; i <= SNDRV_PCM_FORMAT_LAST; ++i)
+ if (get_format_name(i))
+ fprintf(stderr, "%s ", get_format_name(i));
+ fprintf(stderr, "\nSome of these may not be available on selected hardware\n");
+ return 0;
+ }
+ while ((c = getopt_long(argc, argv, "PVMD:R:C:F:B:T:", long_options, &option_index)) != -1) {
+ switch (c) {
+ case 'P':
+ pcm_flag = 0;
+ break;
+ case 'V':
+ debug = 1;
+ break;
+ case 'M':
+ mmap = "M";
+ break;
+ case 'D':
+ device = optarg;
+ break;
+ case 'R':
+ rate = (int)strtol(optarg, NULL, 0);
+ break;
+ case 'C':
+ ch = (int)strtol(optarg, NULL, 0);
+ break;
+ case 'F':
+ printf("optarg = %s\n", optarg);
+ format = get_format(optarg);
+ break;
+ case 'B':
+ period = (int)strtol(optarg, NULL, 0);
+ break;
+ case 'T':
+ compressed = 1;
+ printf("compressed codec type requested = %s\n", optarg);
+ compr_codec = optarg;
+ break;
+ default:
+ printf("\nUsage: aplay [options] <file>\n"
+ "options:\n"
+ "-D <hw:C,D> -- Alsa PCM by name\n"
+ "-M -- Mmap stream\n"
+ "-P -- Hostless steam[No PCM]\n"
+ "-V -- verbose\n"
+ "-C -- Channels\n"
+ "-R -- Rate\n"
+ "-F -- Format\n"
+ "-B -- Period\n"
+ "-T -- Compressed\n"
+ "<file> \n");
+ fprintf(stderr, "Formats Supported:\n");
+ for (i = 0; i < SNDRV_PCM_FORMAT_LAST; ++i)
+ if (get_format_name(i))
+ fprintf(stderr, "%s ", get_format_name(i));
+ fprintf(stderr, "\nSome of these may not be available on selected hardware\n");
+ return -EINVAL;
+ }
+
+ }
+ filename = (char*) calloc(1, 30);
+ if (!filename) {
+ fprintf(stderr, "Aplay:Failed to allocate filename!");
+ return -ENOMEM;
+ }
+ if (optind > argc - 1) {
+ free(filename);
+ filename = NULL;
+ } else {
+ strlcpy(filename, argv[optind++], 30);
+ }
+
+ if (pcm_flag) {
+ if (format == SNDRV_PCM_FORMAT_S16_LE)
+ rc = play_wav(mmap, rate, ch, device, filename);
+ else
+ rc = play_raw(mmap, rate, ch, device, filename);
+ } else {
+ rc = play_wav(mmap, rate, ch, device, "dummy");
+ }
+ if (filename)
+ free(filename);
+
+ return rc;
+}
+