/* ** Copyright 2010, The Android Open-Source Project ** Copyright (c) 2011-2013, The Linux Foundation. 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 <sound/compress_params.h> #include <sound/compress_offload.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 struct output_metadata_handle_t { uint32_t metadataLength; uint32_t bufferLength; uint64_t timestamp; uint32_t reserved[12]; }; static struct output_metadata_handle_t outputMetadataTunnel; 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 int set_channel_map = 0; static char channel_map[8]; static char *compr_codec; static int piped = 0; static int outputMetadataLength = 0; static int eosSet = 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'}, {"channelMap", 0, 0, 'X'}, {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; }; void updateMetaData(size_t bytes) { outputMetadataTunnel.metadataLength = sizeof(outputMetadataTunnel); outputMetadataTunnel.timestamp = 0; outputMetadataTunnel.bufferLength = bytes; fprintf(stderr, "bytes = %d\n", bytes); } 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; if(pcm->flags & PCM_MONO) channels = 1; else if(pcm->flags & PCM_QUAD) channels = 4; else if(pcm->flags & PCM_5POINT1) channels = 6; else if(pcm->flags & PCM_7POINT1) channels = 8; else channels = 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; } void send_channel_map_driver(struct pcm *pcm) { int i, ret; struct mixer *mixer; const char* device = "/dev/snd/controlC0"; mixer = mixer_open(device); if (!mixer) { fprintf(stderr,"oops: %s: %d\n", strerror(errno), __LINE__); return; } ret = pcm_set_channel_map(pcm, mixer, 8, channel_map); if (ret < 0) fprintf(stderr, "could not set channel mask\n"); mixer_close(mixer); return; } 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 == 4) flags |= PCM_QUAD; else if (channels == 6) flags |= PCM_5POINT1; else if (channels == 8) flags |= PCM_7POINT1; 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 SND_AUDIOCODEC_MP3: compr_params.codec.id = SND_AUDIOCODEC_MP3; break; case SND_AUDIOCODEC_AC3_PASS_THROUGH: compr_params.codec.id = SND_AUDIOCODEC_AC3_PASS_THROUGH; printf("codec -d = %x\n", SND_AUDIOCODEC_AC3_PASS_THROUGH); break; case SND_AUDIOCODEC_AAC: compr_params.codec.id = SND_AUDIOCODEC_AAC; printf("codec -d = %x\n", SND_AUDIOCODEC_AAC); 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; } outputMetadataLength = sizeof(struct output_metadata_handle_t); } else if (channels > 2) { if(set_channel_map) { send_channel_map_driver(pcm); } } 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 = bufsize / (2*channels); 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 = remainingData / (2*channels); } } fprintf(stderr, "addr = %d, size = %d \n", (dst_addr + outputMetadataLength),(bufsize - outputMetadataLength)); err = read(fd, (dst_addr + outputMetadataLength) , (bufsize - outputMetadataLength)); if(compressed) { updateMetaData(err); memcpy(dst_addr, &outputMetadataTunnel, outputMetadataLength); } if (debug) fprintf(stderr, "read %d bytes from file\n", err); if (err <= 0 ) { fprintf(stderr," EOS set\n "); eosSet = 1; 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); if(compressed && eosSet) { fprintf(stderr,"Audio Drain DONE ++\n"); if ( ioctl(pcm->fd, SNDRV_COMPRESS_DRAIN) < 0 ) { fprintf(stderr,"Audio Drain failed\n"); } fprintf(stderr,"Audio Drain DONE --\n"); } 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; char *cformat = NULL; 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; cformat = get_format_desc(format); if (cformat != NULL && fn != NULL) fprintf(stderr, "aplay: Playing '%s': format %s ch = %d\n", fn, cformat, 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; char *cformat = NULL; 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)) { if (fn != NULL) 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)) { if (fn != NULL) fprintf(stderr, "Aplay:aplay: '%s' is not pcm format\n", fn); return -EINVAL; } if (hdr.bits_per_sample != 16) { if (fn != NULL) 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; cformat = get_format_desc(format); if (cformat != NULL && fn != NULL) fprintf(stderr, "aplay: Playing '%s':%s\n", fn, cformat); return play_file(hdr.sample_rate, hdr.num_channels, fd, flag, device, hdr.data_sz); } char get_channel_map_val(char *string) { char retval = 0; if( !strncmp(string, "RRC", sizeof(string)) ) retval = 16; else if( !strncmp(string, "RLC", sizeof(string)) ) retval = 15; else if( !strncmp(string, "FRC", sizeof(string)) ) retval = 14; else if( !strncmp(string, "FLC", sizeof(string)) ) retval = 13; else if( !strncmp(string, "MS", sizeof(string)) ) retval = 12; else if( !strncmp(string, "CVH", sizeof(string)) ) retval = 11; else if( !strncmp(string, "TS", sizeof(string)) ) retval = 10; else if( !strncmp(string, "RB", sizeof(string)) ) retval = 9; else if( !strncmp(string, "LB", sizeof(string)) ) retval = 8; else if( !strncmp(string, "CS", sizeof(string)) ) retval = 7; else if( !strncmp(string, "LFE", sizeof(string)) ) retval = 6; else if( !strncmp(string, "RS", sizeof(string)) ) retval = 5; else if( !strncmp(string, "LS", sizeof(string)) ) retval = 4; else if( !strncmp(string, "FC", sizeof(string)) ) retval = 3; else if( !strncmp(string, "FR", sizeof(string)) ) retval = 2; else if( !strncmp(string, "FL", sizeof(string)) ) retval = 1; return retval; } 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; char *ptr; int rc = 0; char *cformat = NULL; 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" "-X <\"FL,FR,FC,Ls,Rs,LFE\" for 5.1 configuration\n" " supported channels: \n" " FL, FR, FC, LS, RS, LFE, CS, TS \n" " LB, RB, FLC, FRC, RLC, RRC, CVH, MS\n" "<file> \n"); fprintf(stderr, "Formats Supported:\n"); for (i = 0; i <= SNDRV_PCM_FORMAT_LAST; ++i) { cformat = get_format_name(i); if (cformat != NULL) fprintf(stderr, "%s ", cformat); } 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:X:", 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; case 'X': set_channel_map = 1; i = 0; memset(channel_map, 0, sizeof(channel_map)); ptr = strtok(optarg, ","); while((ptr != NULL) && (i < sizeof(channel_map))) { channel_map[i] = get_channel_map_val(ptr); if (channel_map[i] < 0 || channel_map[i] > 16) { set_channel_map = 0; break; } ptr = strtok(NULL,","); i++; } 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" "-X <\"FL,FR,FC,Ls,Rs,LFE\" for 5.1 configuration\n" " supported channels: \n" " FL, FR, FC, LS, RS, LFE, CS, TS \n" " LB, RB, FLC, FRC, RLC, RRC, CVH, MS\n" "<file> \n"); fprintf(stderr, "Formats Supported:\n"); cformat = NULL; for (i = 0; i < SNDRV_PCM_FORMAT_LAST; ++i) { cformat = get_format_name(i); if (cformat != NULL) fprintf(stderr, "%s ", cformat); } 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 && filename != NULL) 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; }