1/*
2 * BSD LICENSE
3 *
4 * tinyplay command line player for compress audio offload in alsa
5 * Copyright (c) 2011-2012, Intel Corporation
6 * All rights reserved.
7 *
8 * Author: Vinod Koul <vinod.koul@linux.intel.com>
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions are met:
12 *
13 * Redistributions of source code must retain the above copyright notice,
14 * this list of conditions and the following disclaimer.
15 * Redistributions in binary form must reproduce the above copyright notice,
16 * this list of conditions and the following disclaimer in the documentation
17 * and/or other materials provided with the distribution.
18 * Neither the name of Intel Corporation nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
23 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
26 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
32 * THE POSSIBILITY OF SUCH DAMAGE.
33 *
34 * LGPL LICENSE
35 *
36 * tinyplay command line player for compress audio offload in alsa
37 * Copyright (c) 2011-2012, Intel Corporation.
38 *
39 * This program is free software; you can redistribute it and/or modify it
40 * under the terms and conditions of the GNU Lesser General Public License,
41 * version 2.1, as published by the Free Software Foundation.
42 *
43 * This program is distributed in the hope it will be useful, but WITHOUT
44 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
45 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
46 * License for more details.
47 *
48 * You should have received a copy of the GNU Lesser General Public License
49 * along with this program; if not, write to
50 * the Free Software Foundation, Inc.,
51 * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
52 */
53
54#include <stdint.h>
55#include <linux/types.h>
56#include <fcntl.h>
57#include <errno.h>
58#include <unistd.h>
59#include <stdio.h>
60#include <stdlib.h>
61#include <string.h>
62#include <signal.h>
63#include <stdbool.h>
64#include <getopt.h>
65#include <sys/time.h>
66#define __force
67#define __bitwise
68#define __user
69#include "sound/compress_params.h"
70#include "tinycompress/tinycompress.h"
71#include "tinycompress/tinymp3.h"
72
73static int verbose;
74
75static void usage(void)
76{
77	fprintf(stderr, "usage: cplay [OPTIONS] filename\n"
78		"-c\tcard number\n"
79		"-d\tdevice node\n"
80		"-b\tbuffer size\n"
81		"-f\tfragments\n\n"
82		"-v\tverbose mode\n"
83		"-h\tPrints this help list\n\n"
84		"Example:\n"
85		"\tcplay -c 1 -d 2 test.mp3\n"
86		"\tcplay -f 5 test.mp3\n");
87
88	exit(EXIT_FAILURE);
89}
90
91void play_samples(char *name, unsigned int card, unsigned int device,
92		unsigned long buffer_size, unsigned int frag);
93
94struct mp3_header {
95	uint16_t sync;
96	uint8_t format1;
97	uint8_t format2;
98};
99
100int parse_mp3_header(struct mp3_header *header, unsigned int *num_channels,
101		unsigned int *sample_rate, unsigned int *bit_rate)
102{
103	int ver_idx, mp3_version, layer, bit_rate_idx, sample_rate_idx, channel_idx;
104
105	/* check sync bits */
106	if ((header->sync & MP3_SYNC) != MP3_SYNC) {
107		fprintf(stderr, "Error: Can't find sync word\n");
108		return -1;
109	}
110	ver_idx = (header->sync >> 11) & 0x03;
111	mp3_version = ver_idx == 0 ? MPEG25 : ((ver_idx & 0x1) ? MPEG1 : MPEG2);
112	layer = 4 - ((header->sync >> 9) & 0x03);
113	bit_rate_idx = ((header->format1 >> 4) & 0x0f);
114	sample_rate_idx = ((header->format1 >> 2) & 0x03);
115	channel_idx = ((header->format2 >> 6) & 0x03);
116
117	if (sample_rate_idx == 3 || layer == 4 || bit_rate_idx == 15) {
118		fprintf(stderr, "Error: Can't find valid header\n");
119		return -1;
120	}
121	*num_channels = (channel_idx == MONO ? 1 : 2);
122	*sample_rate = mp3_sample_rates[mp3_version][sample_rate_idx];
123	*bit_rate = (mp3_bit_rates[mp3_version][layer - 1][bit_rate_idx]) * 1000;
124	if (verbose)
125		printf("%s: exit\n", __func__);
126	return 0;
127}
128
129int check_codec_format_supported(unsigned int card, unsigned int device, struct snd_codec *codec)
130{
131	if (is_codec_supported(card, device, COMPRESS_IN, codec) == false) {
132		fprintf(stderr, "Error: This codec or format is not supported by DSP\n");
133		return -1;
134	}
135	return 0;
136}
137
138static int print_time(struct compress *compress)
139{
140	unsigned int avail;
141	struct timespec tstamp;
142
143	if (compress_get_hpointer(compress, &avail, &tstamp) != 0) {
144		fprintf(stderr, "Error querying timestamp\n");
145		fprintf(stderr, "ERR: %s\n", compress_get_error(compress));
146		return -1;
147	} else
148		fprintf(stderr, "DSP played %jd.%jd\n", (intmax_t)tstamp.tv_sec, (intmax_t)tstamp.tv_nsec*1000);
149	return 0;
150}
151
152int main(int argc, char **argv)
153{
154	char *file;
155	unsigned long buffer_size = 0;
156	int c;
157	unsigned int card = 0, device = 0, frag = 0;
158
159
160	if (argc < 2)
161		usage();
162
163	verbose = 0;
164	while ((c = getopt(argc, argv, "hvb:f:c:d:")) != -1) {
165		switch (c) {
166		case 'h':
167			usage();
168			break;
169		case 'b':
170			buffer_size = strtol(optarg, NULL, 0);
171			break;
172		case 'f':
173			frag = strtol(optarg, NULL, 10);
174			break;
175		case 'c':
176			card = strtol(optarg, NULL, 10);
177			break;
178		case 'd':
179			device = strtol(optarg, NULL, 10);
180			break;
181		case 'v':
182			verbose = 1;
183			break;
184		default:
185			exit(EXIT_FAILURE);
186		}
187	}
188	if (optind >= argc)
189		usage();
190
191	file = argv[optind];
192
193	play_samples(file, card, device, buffer_size, frag);
194
195	fprintf(stderr, "Finish Playing.... Close Normally\n");
196	exit(EXIT_SUCCESS);
197}
198
199void play_samples(char *name, unsigned int card, unsigned int device,
200		unsigned long buffer_size, unsigned int frag)
201{
202	struct compr_config config;
203	struct snd_codec codec;
204	struct compress *compress;
205	struct mp3_header header;
206	FILE *file;
207	char *buffer;
208	int size, num_read, wrote;
209	unsigned int channels, rate, bits;
210
211	if (verbose)
212		printf("%s: entry\n", __func__);
213	file = fopen(name, "rb");
214	if (!file) {
215		fprintf(stderr, "Unable to open file '%s'\n", name);
216		exit(EXIT_FAILURE);
217	}
218
219	fread(&header, sizeof(header), 1, file);
220
221	if (parse_mp3_header(&header, &channels, &rate, &bits) == -1) {
222		fclose(file);
223		exit(EXIT_FAILURE);
224	}
225
226	codec.id = SND_AUDIOCODEC_MP3;
227	codec.ch_in = channels;
228	codec.ch_out = channels;
229	codec.sample_rate = rate;
230	if (!codec.sample_rate) {
231		fprintf(stderr, "invalid sample rate %d\n", rate);
232		fclose(file);
233		exit(EXIT_FAILURE);
234	}
235	codec.bit_rate = bits;
236	codec.rate_control = 0;
237	codec.profile = 0;
238	codec.level = 0;
239	codec.ch_mode = 0;
240	codec.format = 0;
241	if ((buffer_size != 0) && (frag != 0)) {
242		config.fragment_size = buffer_size/frag;
243		config.fragments = frag;
244	} else {
245		/* use driver defaults */
246		config.fragment_size = 0;
247		config.fragments = 0;
248	}
249	config.codec = &codec;
250
251	compress = compress_open(card, device, COMPRESS_IN, &config);
252	if (!compress || !is_compress_ready(compress)) {
253		fprintf(stderr, "Unable to open Compress device %d:%d\n",
254				card, device);
255		fprintf(stderr, "ERR: %s\n", compress_get_error(compress));
256		goto FILE_EXIT;
257	};
258	if (verbose)
259		printf("%s: Opened compress device\n", __func__);
260	size = config.fragment_size;
261	buffer = malloc(size * config.fragments);
262	if (!buffer) {
263		fprintf(stderr, "Unable to allocate %d bytes\n", size);
264		goto COMP_EXIT;
265	}
266
267	/* we will write frag fragment_size and then start */
268	num_read = fread(buffer, 1, size * config.fragments, file);
269	if (num_read > 0) {
270		if (verbose)
271			printf("%s: Doing first buffer write of %d\n", __func__, num_read);
272		wrote = compress_write(compress, buffer, num_read);
273		if (wrote < 0) {
274			fprintf(stderr, "Error %d playing sample\n", wrote);
275			fprintf(stderr, "ERR: %s\n", compress_get_error(compress));
276			goto BUF_EXIT;
277		}
278		if (wrote != num_read) {
279			/* TODO: Buufer pointer needs to be set here */
280			fprintf(stderr, "We wrote %d, DSP accepted %d\n", num_read, wrote);
281		}
282	}
283	printf("Playing file %s On Card %u device %u, with buffer of %lu bytes\n",
284			name, card, device, buffer_size);
285	printf("Format %u Channels %u, %u Hz, Bit Rate %d\n",
286			SND_AUDIOCODEC_MP3, channels, rate, bits);
287
288	compress_start(compress);
289	if (verbose)
290		printf("%s: You should hear audio NOW!!!\n", __func__);
291
292	do {
293		num_read = fread(buffer, 1, size, file);
294		if (num_read > 0) {
295			wrote = compress_write(compress, buffer, num_read);
296			if (wrote < 0) {
297				fprintf(stderr, "Error playing sample\n");
298				fprintf(stderr, "ERR: %s\n", compress_get_error(compress));
299				goto BUF_EXIT;
300			}
301			if (wrote != num_read) {
302				/* TODO: Buffer pointer needs to be set here */
303				fprintf(stderr, "We wrote %d, DSP accepted %d\n", num_read, wrote);
304			}
305			if (verbose) {
306				print_time(compress);
307				printf("%s: wrote %d\n", __func__, wrote);
308			}
309		}
310	} while (num_read > 0);
311
312	if (verbose)
313		printf("%s: exit success\n", __func__);
314	/* issue drain if it supports */
315	compress_drain(compress);
316	free(buffer);
317	fclose(file);
318	compress_close(compress);
319	return;
320BUF_EXIT:
321	free(buffer);
322COMP_EXIT:
323	compress_close(compress);
324FILE_EXIT:
325	fclose(file);
326	if (verbose)
327		printf("%s: exit failure\n", __func__);
328	exit(EXIT_FAILURE);
329}
330
331