1c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent/* 2c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent * BSD LICENSE 3c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent * 4c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent * tinycompress library for compress audio offload in alsa 5c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent * Copyright (c) 2011-2012, Intel Corporation 6c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent * All rights reserved. 7c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent * 8c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent * Author: Vinod Koul <vinod.koul@linux.intel.com> 9c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent * 10c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent * Redistribution and use in source and binary forms, with or without 11c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent * modification, are permitted provided that the following conditions are met: 12c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent * 13c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent * Redistributions of source code must retain the above copyright notice, 14c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent * this list of conditions and the following disclaimer. 15c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent * Redistributions in binary form must reproduce the above copyright notice, 16c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent * this list of conditions and the following disclaimer in the documentation 17c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent * and/or other materials provided with the distribution. 18c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent * Neither the name of Intel Corporation nor the names of its contributors 19c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent * may be used to endorse or promote products derived from this software 20c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent * without specific prior written permission. 21c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent * 22c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 23c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 26c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 27c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 28c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 29c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 30c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 31c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 32c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent * THE POSSIBILITY OF SUCH DAMAGE. 33c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent * 34c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent * LGPL LICENSE 35c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent * 36c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent * tinycompress library for compress audio offload in alsa 37c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent * Copyright (c) 2011-2012, Intel Corporation. 38c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent * 39c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent * 40c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent * This program is free software; you can redistribute it and/or modify it 41c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent * under the terms and conditions of the GNU Lesser General Public License, 42c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent * version 2.1, as published by the Free Software Foundation. 43c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent * 44c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent * This program is distributed in the hope it will be useful, but WITHOUT 45c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 46c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public 47c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent * License for more details. 48c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent * 49c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent * You should have received a copy of the GNU Lesser General Public License 50c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent * along with this program; if not, write to 51c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent * the Free Software Foundation, Inc., 52c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. 53c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent */ 54c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent 55c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent#include <stdio.h> 56c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent#include <stdlib.h> 57c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent#include <fcntl.h> 58c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent#include <stdarg.h> 59c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent#include <string.h> 60c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent#include <errno.h> 61c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent#include <unistd.h> 62c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent#include <poll.h> 63c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent#include <stdbool.h> 64c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent#include <sys/ioctl.h> 65c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent#include <sys/mman.h> 66c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent#include <sys/time.h> 67c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent#include <limits.h> 68c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent 69c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent#include <linux/types.h> 70c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent#include <linux/ioctl.h> 71c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent#define __force 72c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent#define __bitwise 73c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent#define __user 74c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent#include <sound/asound.h> 7579c370788bfeac8e2951cc35844fb96f15f28159Eric Laurent#include "sound/compress_params.h" 7679c370788bfeac8e2951cc35844fb96f15f28159Eric Laurent#include "sound/compress_offload.h" 7779c370788bfeac8e2951cc35844fb96f15f28159Eric Laurent#include "tinycompress/tinycompress.h" 78c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent 79c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent#define COMPR_ERR_MAX 128 80c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent 81c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent/* Default maximum time we will wait in a poll() - 20 seconds */ 82c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent#define DEFAULT_MAX_POLL_WAIT_MS 20000 83c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent 84c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurentstruct compress { 85c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent int fd; 86c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent unsigned int flags; 87c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent char error[COMPR_ERR_MAX]; 88c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent struct compr_config *config; 89c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent int running; 90c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent int max_poll_wait_ms; 9179c370788bfeac8e2951cc35844fb96f15f28159Eric Laurent int nonblocking; 92c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent unsigned int gapless_metadata; 93c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent unsigned int next_track; 94c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent}; 95c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent 96c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurentstatic int oops(struct compress *compress, int e, const char *fmt, ...) 97c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent{ 98c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent va_list ap; 99c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent int sz; 100c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent 101c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent va_start(ap, fmt); 102c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent vsnprintf(compress->error, COMPR_ERR_MAX, fmt, ap); 103c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent va_end(ap); 104c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent sz = strlen(compress->error); 105c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent 10679c370788bfeac8e2951cc35844fb96f15f28159Eric Laurent snprintf(compress->error + sz, COMPR_ERR_MAX - sz, 10779c370788bfeac8e2951cc35844fb96f15f28159Eric Laurent ": %s", strerror(e)); 10879c370788bfeac8e2951cc35844fb96f15f28159Eric Laurent errno = e; 10979c370788bfeac8e2951cc35844fb96f15f28159Eric Laurent 11079c370788bfeac8e2951cc35844fb96f15f28159Eric Laurent return -1; 111c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent} 112c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent 113c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurentconst char *compress_get_error(struct compress *compress) 114c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent{ 115c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent return compress->error; 116c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent} 117c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurentstatic struct compress bad_compress = { 118c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent .fd = -1, 119c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent}; 120c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent 121c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurentint is_compress_running(struct compress *compress) 122c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent{ 123c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent return ((compress->fd > 0) && compress->running) ? 1 : 0; 124c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent} 125c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent 126c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurentint is_compress_ready(struct compress *compress) 127c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent{ 128c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent return (compress->fd > 0) ? 1 : 0; 129c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent} 130c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent 131c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurentstatic int get_compress_version(struct compress *compress) 132c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent{ 133c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent int version = 0; 134c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent 135c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent if (ioctl(compress->fd, SNDRV_COMPRESS_IOCTL_VERSION, &version)) { 136c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent oops(compress, errno, "cant read version"); 137c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent return -1; 138c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent } 139c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent return version; 140c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent} 141c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent 142c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurentstatic bool _is_codec_supported(struct compress *compress, struct compr_config *config, 143c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent const struct snd_compr_caps *caps) 144c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent{ 145c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent bool codec = false; 146c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent unsigned int i; 147c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent 148c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent for (i = 0; i < caps->num_codecs; i++) { 149c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent if (caps->codecs[i] == config->codec->id) { 150c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent /* found the codec */ 151c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent codec = true; 152c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent break; 153c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent } 154c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent } 155c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent if (codec == false) { 15679c370788bfeac8e2951cc35844fb96f15f28159Eric Laurent oops(compress, ENXIO, "this codec is not supported"); 157c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent return false; 158c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent } 159c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent 160c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent if (config->fragment_size < caps->min_fragment_size) { 16179c370788bfeac8e2951cc35844fb96f15f28159Eric Laurent oops(compress, EINVAL, "requested fragment size %d is below min supported %d", 162c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent config->fragment_size, caps->min_fragment_size); 163c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent return false; 164c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent } 165c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent if (config->fragment_size > caps->max_fragment_size) { 16679c370788bfeac8e2951cc35844fb96f15f28159Eric Laurent oops(compress, EINVAL, "requested fragment size %d is above max supported %d", 167c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent config->fragment_size, caps->max_fragment_size); 168c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent return false; 169c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent } 170c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent if (config->fragments < caps->min_fragments) { 17179c370788bfeac8e2951cc35844fb96f15f28159Eric Laurent oops(compress, EINVAL, "requested fragments %d are below min supported %d", 172c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent config->fragments, caps->min_fragments); 173c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent return false; 174c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent } 175c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent if (config->fragments > caps->max_fragments) { 17679c370788bfeac8e2951cc35844fb96f15f28159Eric Laurent oops(compress, EINVAL, "requested fragments %d are above max supported %d", 177c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent config->fragments, caps->max_fragments); 178c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent return false; 179c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent } 180c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent 181c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent /* TODO: match the codec properties */ 182c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent return true; 183c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent} 184c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent 185c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurentstatic bool _is_codec_type_supported(int fd, struct snd_codec *codec) 186c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent{ 187c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent struct snd_compr_caps caps; 188c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent bool found = false; 189c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent unsigned int i; 190c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent 191c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent if (ioctl(fd, SNDRV_COMPRESS_GET_CAPS, &caps)) { 192c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent oops(&bad_compress, errno, "cannot get device caps"); 193c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent return false; 194c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent } 195c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent 196c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent for (i = 0; i < caps.num_codecs; i++) { 197c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent if (caps.codecs[i] == codec->id) { 198c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent /* found the codec */ 199c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent found = true; 200c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent break; 201c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent } 202c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent } 203c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent /* TODO: match the codec properties */ 204c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent return found; 205c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent} 206c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent 207c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurentstatic inline void 208c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurentfill_compress_params(struct compr_config *config, struct snd_compr_params *params) 209c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent{ 210c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent params->buffer.fragment_size = config->fragment_size; 211c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent params->buffer.fragments = config->fragments; 212c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent memcpy(¶ms->codec, config->codec, sizeof(params->codec)); 213c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent} 214c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent 215c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurentstruct compress *compress_open(unsigned int card, unsigned int device, 216c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent unsigned int flags, struct compr_config *config) 217c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent{ 218c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent struct compress *compress; 219c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent struct snd_compr_params params; 220c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent struct snd_compr_caps caps; 221c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent char fn[256]; 222c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent 22379c370788bfeac8e2951cc35844fb96f15f28159Eric Laurent if (!config) { 22479c370788bfeac8e2951cc35844fb96f15f28159Eric Laurent oops(&bad_compress, EINVAL, "passed bad config"); 22579c370788bfeac8e2951cc35844fb96f15f28159Eric Laurent return &bad_compress; 22679c370788bfeac8e2951cc35844fb96f15f28159Eric Laurent } 22779c370788bfeac8e2951cc35844fb96f15f28159Eric Laurent 228c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent compress = calloc(1, sizeof(struct compress)); 22979c370788bfeac8e2951cc35844fb96f15f28159Eric Laurent if (!compress) { 230c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent oops(&bad_compress, errno, "cannot allocate compress object"); 231c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent return &bad_compress; 232c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent } 233c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent 234c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent compress->next_track = 0; 235c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent compress->gapless_metadata = 0; 236c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent compress->config = calloc(1, sizeof(*config)); 237c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent if (!compress->config) 238c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent goto input_fail; 239c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent 240c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent snprintf(fn, sizeof(fn), "/dev/snd/comprC%uD%u", card, device); 241c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent 242c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent compress->max_poll_wait_ms = DEFAULT_MAX_POLL_WAIT_MS; 243c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent 244c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent compress->flags = flags; 245c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent if (!((flags & COMPRESS_OUT) || (flags & COMPRESS_IN))) { 24679c370788bfeac8e2951cc35844fb96f15f28159Eric Laurent oops(&bad_compress, EINVAL, "can't deduce device direction from given flags"); 247c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent goto config_fail; 248c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent } 249f0c407825741bcb94952e4264efce66dee378411Eric Laurent 250c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent if (flags & COMPRESS_OUT) { 251f0c407825741bcb94952e4264efce66dee378411Eric Laurent compress->fd = open(fn, O_RDONLY); 252f0c407825741bcb94952e4264efce66dee378411Eric Laurent } else { 253f0c407825741bcb94952e4264efce66dee378411Eric Laurent compress->fd = open(fn, O_WRONLY); 254c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent } 255c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent if (compress->fd < 0) { 256c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent oops(&bad_compress, errno, "cannot open device '%s'", fn); 257c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent goto config_fail; 258c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent } 259c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent 260c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent if (ioctl(compress->fd, SNDRV_COMPRESS_GET_CAPS, &caps)) { 261c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent oops(compress, errno, "cannot get device caps"); 262c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent goto codec_fail; 263c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent } 264c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent 265c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent /* If caller passed "don't care" fill in default values */ 266c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent if ((config->fragment_size == 0) || (config->fragments == 0)) { 267c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent config->fragment_size = caps.min_fragment_size; 268c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent config->fragments = caps.max_fragments; 269c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent } 270c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent 271c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent#if 0 272c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent /* FIXME need to turn this On when DSP supports 273c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent * and treat in no support case 274c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent */ 275c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent if (_is_codec_supported(compress, config, &caps) == false) { 276c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent oops(compress, errno, "codec not supported\n"); 277c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent goto codec_fail; 278c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent } 279c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent#endif 28079c370788bfeac8e2951cc35844fb96f15f28159Eric Laurent 28179c370788bfeac8e2951cc35844fb96f15f28159Eric Laurent memcpy(compress->config, config, sizeof(*compress->config)); 282c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent fill_compress_params(config, ¶ms); 283c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent 284c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent if (ioctl(compress->fd, SNDRV_COMPRESS_SET_PARAMS, ¶ms)) { 285c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent oops(&bad_compress, errno, "cannot set device"); 286c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent goto codec_fail; 287c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent } 288c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent 289c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent return compress; 290c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent 291c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurentcodec_fail: 292c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent close(compress->fd); 293c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent compress->fd = -1; 294c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurentconfig_fail: 295c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent free(compress->config); 296c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurentinput_fail: 297c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent free(compress); 298c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent return &bad_compress; 299c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent} 300c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent 301c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurentvoid compress_close(struct compress *compress) 302c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent{ 303c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent if (compress == &bad_compress) 304c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent return; 305c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent 306c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent if (compress->fd >= 0) 307c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent close(compress->fd); 308c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent compress->running = 0; 309c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent compress->fd = -1; 310c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent free(compress->config); 311c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent free(compress); 312c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent} 313c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent 314c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurentint compress_get_hpointer(struct compress *compress, 315c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent unsigned int *avail, struct timespec *tstamp) 316c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent{ 317c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent struct snd_compr_avail kavail; 318c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent __u64 time; 319c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent 320c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent if (!is_compress_ready(compress)) 32179c370788bfeac8e2951cc35844fb96f15f28159Eric Laurent return oops(compress, ENODEV, "device not ready"); 322c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent 323c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent if (ioctl(compress->fd, SNDRV_COMPRESS_AVAIL, &kavail)) 324c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent return oops(compress, errno, "cannot get avail"); 325c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent if (0 == kavail.tstamp.sampling_rate) 32679c370788bfeac8e2951cc35844fb96f15f28159Eric Laurent return oops(compress, ENODATA, "sample rate unknown"); 327c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent *avail = (unsigned int)kavail.avail; 328c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent time = kavail.tstamp.pcm_io_frames / kavail.tstamp.sampling_rate; 329c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent tstamp->tv_sec = time; 330c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent time = kavail.tstamp.pcm_io_frames % kavail.tstamp.sampling_rate; 331c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent tstamp->tv_nsec = time * 1000000000 / kavail.tstamp.sampling_rate; 332c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent return 0; 333c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent} 334c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent 335c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurentint compress_get_tstamp(struct compress *compress, 336c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent unsigned long *samples, unsigned int *sampling_rate) 337c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent{ 338c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent struct snd_compr_tstamp ktstamp; 339c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent 340c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent if (!is_compress_ready(compress)) 34179c370788bfeac8e2951cc35844fb96f15f28159Eric Laurent return oops(compress, ENODEV, "device not ready"); 342c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent 343c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent if (ioctl(compress->fd, SNDRV_COMPRESS_TSTAMP, &ktstamp)) 344c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent return oops(compress, errno, "cannot get tstamp"); 345c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent 346c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent *samples = ktstamp.pcm_io_frames; 347c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent *sampling_rate = ktstamp.sampling_rate; 348c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent return 0; 349c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent} 350c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent 351c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurentint compress_write(struct compress *compress, const void *buf, unsigned int size) 352c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent{ 353c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent struct snd_compr_avail avail; 354c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent struct pollfd fds; 355c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent int to_write = 0; /* zero indicates we haven't written yet */ 356c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent int written, total = 0, ret; 357c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent const char* cbuf = buf; 358c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent const unsigned int frag_size = compress->config->fragment_size; 359c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent 360c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent if (!(compress->flags & COMPRESS_IN)) 36179c370788bfeac8e2951cc35844fb96f15f28159Eric Laurent return oops(compress, EINVAL, "Invalid flag set"); 362c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent if (!is_compress_ready(compress)) 36379c370788bfeac8e2951cc35844fb96f15f28159Eric Laurent return oops(compress, ENODEV, "device not ready"); 364c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent fds.fd = compress->fd; 365c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent fds.events = POLLOUT; 366c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent 367c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent /*TODO: treat auto start here first */ 368c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent while (size) { 369c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent if (ioctl(compress->fd, SNDRV_COMPRESS_AVAIL, &avail)) 370c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent return oops(compress, errno, "cannot get avail"); 371c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent 37279c370788bfeac8e2951cc35844fb96f15f28159Eric Laurent /* We can write if we have at least one fragment available 37379c370788bfeac8e2951cc35844fb96f15f28159Eric Laurent * or there is enough space for all remaining data 37479c370788bfeac8e2951cc35844fb96f15f28159Eric Laurent */ 37579c370788bfeac8e2951cc35844fb96f15f28159Eric Laurent if ((avail.avail < frag_size) && (avail.avail < size)) { 37679c370788bfeac8e2951cc35844fb96f15f28159Eric Laurent 37779c370788bfeac8e2951cc35844fb96f15f28159Eric Laurent if (compress->nonblocking) 37879c370788bfeac8e2951cc35844fb96f15f28159Eric Laurent return total; 37979c370788bfeac8e2951cc35844fb96f15f28159Eric Laurent 380c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent ret = poll(&fds, 1, compress->max_poll_wait_ms); 381a85e245a09c028d36cbf04f233be10bc583691f5Richard Fitzgerald if (fds.revents & POLLERR) { 382a85e245a09c028d36cbf04f233be10bc583691f5Richard Fitzgerald return oops(compress, EIO, "poll returned error!"); 383a85e245a09c028d36cbf04f233be10bc583691f5Richard Fitzgerald } 384c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent /* A pause will cause -EBADFD or zero. 385c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent * This is not an error, just stop writing */ 386c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent if ((ret == 0) || (ret == -EBADFD)) 387c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent break; 388c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent if (ret < 0) 389c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent return oops(compress, errno, "poll error"); 390c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent if (fds.revents & POLLOUT) { 391c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent continue; 392c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent } 393c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent } 394c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent /* write avail bytes */ 395c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent if (size > avail.avail) 396c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent to_write = avail.avail; 397c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent else 398c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent to_write = size; 399c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent written = write(compress->fd, cbuf, to_write); 400c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent /* If play was paused the write returns -EBADFD */ 401c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent if (written == -EBADFD) 402c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent break; 403c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent if (written < 0) 404c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent return oops(compress, errno, "write failed!"); 405c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent 406c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent size -= written; 407c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent cbuf += written; 408c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent total += written; 409c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent } 410c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent return total; 411c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent} 412c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent 413c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurentint compress_read(struct compress *compress, void *buf, unsigned int size) 414c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent{ 415f0c407825741bcb94952e4264efce66dee378411Eric Laurent struct snd_compr_avail avail; 416f0c407825741bcb94952e4264efce66dee378411Eric Laurent struct pollfd fds; 417f0c407825741bcb94952e4264efce66dee378411Eric Laurent int to_read = 0; 418f0c407825741bcb94952e4264efce66dee378411Eric Laurent int num_read, total = 0, ret; 419f0c407825741bcb94952e4264efce66dee378411Eric Laurent char* cbuf = buf; 420f0c407825741bcb94952e4264efce66dee378411Eric Laurent const unsigned int frag_size = compress->config->fragment_size; 421f0c407825741bcb94952e4264efce66dee378411Eric Laurent 422f0c407825741bcb94952e4264efce66dee378411Eric Laurent if (!(compress->flags & COMPRESS_OUT)) 42379c370788bfeac8e2951cc35844fb96f15f28159Eric Laurent return oops(compress, EINVAL, "Invalid flag set"); 424f0c407825741bcb94952e4264efce66dee378411Eric Laurent if (!is_compress_ready(compress)) 42579c370788bfeac8e2951cc35844fb96f15f28159Eric Laurent return oops(compress, ENODEV, "device not ready"); 426f0c407825741bcb94952e4264efce66dee378411Eric Laurent fds.fd = compress->fd; 427f0c407825741bcb94952e4264efce66dee378411Eric Laurent fds.events = POLLIN; 428f0c407825741bcb94952e4264efce66dee378411Eric Laurent 429f0c407825741bcb94952e4264efce66dee378411Eric Laurent while (size) { 430f0c407825741bcb94952e4264efce66dee378411Eric Laurent if (ioctl(compress->fd, SNDRV_COMPRESS_AVAIL, &avail)) 431f0c407825741bcb94952e4264efce66dee378411Eric Laurent return oops(compress, errno, "cannot get avail"); 432f0c407825741bcb94952e4264efce66dee378411Eric Laurent 433f0c407825741bcb94952e4264efce66dee378411Eric Laurent if ( (avail.avail < frag_size) && (avail.avail < size) ) { 434f0c407825741bcb94952e4264efce66dee378411Eric Laurent /* Less than one fragment available and not at the 435f0c407825741bcb94952e4264efce66dee378411Eric Laurent * end of the read, so poll 436f0c407825741bcb94952e4264efce66dee378411Eric Laurent */ 43779c370788bfeac8e2951cc35844fb96f15f28159Eric Laurent if (compress->nonblocking) 43879c370788bfeac8e2951cc35844fb96f15f28159Eric Laurent return total; 43979c370788bfeac8e2951cc35844fb96f15f28159Eric Laurent 440f0c407825741bcb94952e4264efce66dee378411Eric Laurent ret = poll(&fds, 1, compress->max_poll_wait_ms); 441a85e245a09c028d36cbf04f233be10bc583691f5Richard Fitzgerald if (fds.revents & POLLERR) { 442a85e245a09c028d36cbf04f233be10bc583691f5Richard Fitzgerald return oops(compress, EIO, "poll returned error!"); 443a85e245a09c028d36cbf04f233be10bc583691f5Richard Fitzgerald } 444f0c407825741bcb94952e4264efce66dee378411Eric Laurent /* A pause will cause -EBADFD or zero. 445f0c407825741bcb94952e4264efce66dee378411Eric Laurent * This is not an error, just stop reading */ 446f0c407825741bcb94952e4264efce66dee378411Eric Laurent if ((ret == 0) || (ret == -EBADFD)) 447f0c407825741bcb94952e4264efce66dee378411Eric Laurent break; 448f0c407825741bcb94952e4264efce66dee378411Eric Laurent if (ret < 0) 449f0c407825741bcb94952e4264efce66dee378411Eric Laurent return oops(compress, errno, "poll error"); 450f0c407825741bcb94952e4264efce66dee378411Eric Laurent if (fds.revents & POLLIN) { 451f0c407825741bcb94952e4264efce66dee378411Eric Laurent continue; 452f0c407825741bcb94952e4264efce66dee378411Eric Laurent } 453f0c407825741bcb94952e4264efce66dee378411Eric Laurent } 454f0c407825741bcb94952e4264efce66dee378411Eric Laurent /* read avail bytes */ 455f0c407825741bcb94952e4264efce66dee378411Eric Laurent if (size > avail.avail) 456f0c407825741bcb94952e4264efce66dee378411Eric Laurent to_read = avail.avail; 457f0c407825741bcb94952e4264efce66dee378411Eric Laurent else 458f0c407825741bcb94952e4264efce66dee378411Eric Laurent to_read = size; 459f0c407825741bcb94952e4264efce66dee378411Eric Laurent num_read = read(compress->fd, cbuf, to_read); 460f0c407825741bcb94952e4264efce66dee378411Eric Laurent /* If play was paused the read returns -EBADFD */ 461f0c407825741bcb94952e4264efce66dee378411Eric Laurent if (num_read == -EBADFD) 462f0c407825741bcb94952e4264efce66dee378411Eric Laurent break; 463f0c407825741bcb94952e4264efce66dee378411Eric Laurent if (num_read < 0) 464f0c407825741bcb94952e4264efce66dee378411Eric Laurent return oops(compress, errno, "read failed!"); 465f0c407825741bcb94952e4264efce66dee378411Eric Laurent 466f0c407825741bcb94952e4264efce66dee378411Eric Laurent size -= num_read; 467f0c407825741bcb94952e4264efce66dee378411Eric Laurent cbuf += num_read; 468f0c407825741bcb94952e4264efce66dee378411Eric Laurent total += num_read; 469f0c407825741bcb94952e4264efce66dee378411Eric Laurent } 470f0c407825741bcb94952e4264efce66dee378411Eric Laurent 471f0c407825741bcb94952e4264efce66dee378411Eric Laurent return total; 472c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent} 473c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent 474c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurentint compress_start(struct compress *compress) 475c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent{ 476c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent if (!is_compress_ready(compress)) 47779c370788bfeac8e2951cc35844fb96f15f28159Eric Laurent return oops(compress, ENODEV, "device not ready"); 478c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent if (ioctl(compress->fd, SNDRV_COMPRESS_START)) 479c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent return oops(compress, errno, "cannot start the stream"); 480c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent compress->running = 1; 481c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent return 0; 482c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent 483c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent} 484c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent 485c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurentint compress_stop(struct compress *compress) 486c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent{ 487c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent if (!is_compress_running(compress)) 48879c370788bfeac8e2951cc35844fb96f15f28159Eric Laurent return oops(compress, ENODEV, "device not ready"); 489c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent if (ioctl(compress->fd, SNDRV_COMPRESS_STOP)) 490c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent return oops(compress, errno, "cannot stop the stream"); 491c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent return 0; 492c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent} 493c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent 494c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurentint compress_pause(struct compress *compress) 495c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent{ 496c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent if (!is_compress_running(compress)) 49779c370788bfeac8e2951cc35844fb96f15f28159Eric Laurent return oops(compress, ENODEV, "device not ready"); 498c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent if (ioctl(compress->fd, SNDRV_COMPRESS_PAUSE)) 499c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent return oops(compress, errno, "cannot pause the stream"); 500c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent return 0; 501c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent} 502c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent 503c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurentint compress_resume(struct compress *compress) 504c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent{ 505c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent if (ioctl(compress->fd, SNDRV_COMPRESS_RESUME)) 506c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent return oops(compress, errno, "cannot resume the stream"); 507c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent return 0; 508c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent} 509c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent 510c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurentint compress_drain(struct compress *compress) 511c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent{ 512c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent if (!is_compress_running(compress)) 51379c370788bfeac8e2951cc35844fb96f15f28159Eric Laurent return oops(compress, ENODEV, "device not ready"); 514c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent if (ioctl(compress->fd, SNDRV_COMPRESS_DRAIN)) 515c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent return oops(compress, errno, "cannot drain the stream"); 516c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent return 0; 517c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent} 518c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent 519c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurentint compress_partial_drain(struct compress *compress) 520c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent{ 521c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent if (!is_compress_running(compress)) 52279c370788bfeac8e2951cc35844fb96f15f28159Eric Laurent return oops(compress, ENODEV, "device not ready"); 523c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent 524c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent if (!compress->next_track) 52579c370788bfeac8e2951cc35844fb96f15f28159Eric Laurent return oops(compress, EPERM, "next track not signalled"); 526c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent if (ioctl(compress->fd, SNDRV_COMPRESS_PARTIAL_DRAIN)) 527c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent return oops(compress, errno, "cannot drain the stream\n"); 528c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent compress->next_track = 0; 529c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent return 0; 530c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent} 531c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent 532c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurentint compress_next_track(struct compress *compress) 533c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent{ 534c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent if (!is_compress_running(compress)) 53579c370788bfeac8e2951cc35844fb96f15f28159Eric Laurent return oops(compress, ENODEV, "device not ready"); 536c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent 537c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent if (!compress->gapless_metadata) 53879c370788bfeac8e2951cc35844fb96f15f28159Eric Laurent return oops(compress, EPERM, "metadata not set"); 539c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent if (ioctl(compress->fd, SNDRV_COMPRESS_NEXT_TRACK)) 540c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent return oops(compress, errno, "cannot set next track\n"); 541c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent compress->next_track = 1; 542c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent compress->gapless_metadata = 0; 543c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent return 0; 544c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent} 545c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent 546c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurentint compress_set_gapless_metadata(struct compress *compress, 547c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent struct compr_gapless_mdata *mdata) 548c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent{ 549c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent struct snd_compr_metadata metadata; 550c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent int version; 551c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent 552c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent if (!is_compress_ready(compress)) 55379c370788bfeac8e2951cc35844fb96f15f28159Eric Laurent return oops(compress, ENODEV, "device not ready"); 554c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent 555c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent version = get_compress_version(compress); 556c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent if (version <= 0) 557c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent return -1; 558c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent 559c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent if (version < SNDRV_PROTOCOL_VERSION(0, 1, 1)) 56079c370788bfeac8e2951cc35844fb96f15f28159Eric Laurent return oops(compress, ENXIO, "gapless apis not supported in kernel"); 561c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent 562c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent metadata.key = SNDRV_COMPRESS_ENCODER_PADDING; 563c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent metadata.value[0] = mdata->encoder_padding; 564c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent if (ioctl(compress->fd, SNDRV_COMPRESS_SET_METADATA, &metadata)) 565c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent return oops(compress, errno, "can't set metadata for stream\n"); 566c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent 567c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent metadata.key = SNDRV_COMPRESS_ENCODER_DELAY; 568c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent metadata.value[0] = mdata->encoder_delay; 569c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent if (ioctl(compress->fd, SNDRV_COMPRESS_SET_METADATA, &metadata)) 570c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent return oops(compress, errno, "can't set metadata for stream\n"); 571c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent compress->gapless_metadata = 1; 572c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent return 0; 573c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent} 574c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent 575c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurentbool is_codec_supported(unsigned int card, unsigned int device, 576c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent unsigned int flags, struct snd_codec *codec) 577c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent{ 578c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent unsigned int dev_flag; 579c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent bool ret; 580c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent int fd; 581c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent char fn[256]; 582c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent 583c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent snprintf(fn, sizeof(fn), "/dev/snd/comprC%uD%u", card, device); 584c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent 585c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent if (flags & COMPRESS_OUT) 586c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent dev_flag = O_RDONLY; 587c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent else 588c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent dev_flag = O_WRONLY; 589c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent 590c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent fd = open(fn, dev_flag); 591c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent if (fd < 0) 592c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent return oops(&bad_compress, errno, "cannot open device '%s'", fn); 593c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent 594c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent ret = _is_codec_type_supported(fd, codec); 595c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent 596c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent close(fd); 597c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent return ret; 598c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent} 599c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent 600c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurentvoid compress_set_max_poll_wait(struct compress *compress, int milliseconds) 601c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent{ 602c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent compress->max_poll_wait_ms = milliseconds; 603c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent} 604c902d7fb4e0f2b086030f384ce217679775ca2d4Eric Laurent 60579c370788bfeac8e2951cc35844fb96f15f28159Eric Laurentvoid compress_nonblock(struct compress *compress, int nonblock) 60679c370788bfeac8e2951cc35844fb96f15f28159Eric Laurent{ 60779c370788bfeac8e2951cc35844fb96f15f28159Eric Laurent compress->nonblocking = !!nonblock; 60879c370788bfeac8e2951cc35844fb96f15f28159Eric Laurent} 60979c370788bfeac8e2951cc35844fb96f15f28159Eric Laurent 61079c370788bfeac8e2951cc35844fb96f15f28159Eric Laurentint compress_wait(struct compress *compress, int timeout_ms) 61179c370788bfeac8e2951cc35844fb96f15f28159Eric Laurent{ 61279c370788bfeac8e2951cc35844fb96f15f28159Eric Laurent struct pollfd fds; 61379c370788bfeac8e2951cc35844fb96f15f28159Eric Laurent int ret; 61479c370788bfeac8e2951cc35844fb96f15f28159Eric Laurent 61579c370788bfeac8e2951cc35844fb96f15f28159Eric Laurent fds.fd = compress->fd; 61679c370788bfeac8e2951cc35844fb96f15f28159Eric Laurent fds.events = POLLOUT | POLLIN; 61779c370788bfeac8e2951cc35844fb96f15f28159Eric Laurent 61879c370788bfeac8e2951cc35844fb96f15f28159Eric Laurent ret = poll(&fds, 1, timeout_ms); 619ab9b85b430eeef547c6f10496f8e2a904fd38c79Richard Fitzgerald if (ret > 0) { 620ab9b85b430eeef547c6f10496f8e2a904fd38c79Richard Fitzgerald if (fds.revents & POLLERR) 621ab9b85b430eeef547c6f10496f8e2a904fd38c79Richard Fitzgerald return oops(compress, EIO, "poll returned error!"); 622ab9b85b430eeef547c6f10496f8e2a904fd38c79Richard Fitzgerald if (fds.revents & (POLLOUT | POLLIN)) 623ab9b85b430eeef547c6f10496f8e2a904fd38c79Richard Fitzgerald return 0; 624a85e245a09c028d36cbf04f233be10bc583691f5Richard Fitzgerald } 625ab9b85b430eeef547c6f10496f8e2a904fd38c79Richard Fitzgerald if (ret == 0) 626ab9b85b430eeef547c6f10496f8e2a904fd38c79Richard Fitzgerald return oops(compress, ETIME, "poll timed out"); 627ab9b85b430eeef547c6f10496f8e2a904fd38c79Richard Fitzgerald if (ret < 0) 62879c370788bfeac8e2951cc35844fb96f15f28159Eric Laurent return oops(compress, errno, "poll error"); 629ab9b85b430eeef547c6f10496f8e2a904fd38c79Richard Fitzgerald 630ab9b85b430eeef547c6f10496f8e2a904fd38c79Richard Fitzgerald return oops(compress, EIO, "poll signalled unhandled event"); 63179c370788bfeac8e2951cc35844fb96f15f28159Eric Laurent} 63279c370788bfeac8e2951cc35844fb96f15f28159Eric Laurent 633