aboutsummaryrefslogtreecommitdiffstats
path: root/src/output/mvp_plugin.c
blob: c159355978fb256c3b0166f5ebcea60d337df92e (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
/* the Music Player Daemon (MPD)
 * Copyright (C) 2003-2007 by Warren Dukes (warren.dukes@gmail.com)
 * This project's homepage is: http://www.musicpd.org
 *
 * Media MVP audio output based on code from MVPMC project:
 * http://mvpmc.sourceforge.net/
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#include "../output_api.h"

#include <glib.h>

#include <sys/types.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <fcntl.h>
#include <errno.h>
#include <unistd.h>
#include <stdlib.h>

#undef G_LOG_DOMAIN
#define G_LOG_DOMAIN "mvp"

#if G_BYTE_ORDER == G_BIG_ENDIAN
#define MVP_USE_LITTLE_ENDIAN false
#else
#define MVP_USE_LITTLE_ENDIAN true
#endif

typedef struct {
	unsigned long dsp_status;
	unsigned long stream_decode_type;
	unsigned long sample_rate;
	unsigned long bit_rate;
	unsigned long raw[64 / sizeof(unsigned long)];
} aud_status_t;

#define MVP_SET_AUD_STOP		_IOW('a',1,int)
#define MVP_SET_AUD_PLAY		_IOW('a',2,int)
#define MVP_SET_AUD_PAUSE	_IOW('a',3,int)
#define MVP_SET_AUD_UNPAUSE	_IOW('a',4,int)
#define MVP_SET_AUD_SRC		_IOW('a',5,int)
#define MVP_SET_AUD_MUTE		_IOW('a',6,int)
#define MVP_SET_AUD_BYPASS	_IOW('a',8,int)
#define MVP_SET_AUD_CHANNEL	_IOW('a',9,int)
#define MVP_GET_AUD_STATUS	_IOR('a',10,aud_status_t)
#define MVP_SET_AUD_VOLUME	_IOW('a',13,int)
#define MVP_GET_AUD_VOLUME	_IOR('a',14,int)
#define MVP_SET_AUD_STREAMTYPE	_IOW('a',15,int)
#define MVP_SET_AUD_FORMAT	_IOW('a',16,int)
#define MVP_GET_AUD_SYNC		_IOR('a',21,pts_sync_data_t*)
#define MVP_SET_AUD_STC		_IOW('a',22,long long int *)
#define MVP_SET_AUD_SYNC		_IOW('a',23,int)
#define MVP_SET_AUD_END_STREAM	_IOW('a',25,int)
#define MVP_SET_AUD_RESET	_IOW('a',26,int)
#define MVP_SET_AUD_DAC_CLK	_IOW('a',27,int)
#define MVP_GET_AUD_REGS		_IOW('a',28,aud_ctl_regs_t*)

struct mvp_data {
	struct audio_format audio_format;
	int fd;
};

static unsigned mvp_sample_rates[][3] = {
	{9, 8000, 32000},
	{10, 11025, 44100},
	{11, 12000, 48000},
	{1, 16000, 32000},
	{2, 22050, 44100},
	{3, 24000, 48000},
	{5, 32000, 32000},
	{0, 44100, 44100},
	{7, 48000, 48000},
	{13, 64000, 32000},
	{14, 88200, 44100},
	{15, 96000, 48000}
};

static bool
mvp_output_test_default_device(void)
{
	int fd;

	fd = open("/dev/adec_pcm", O_WRONLY);

	if (fd) {
		close(fd);
		return true;
	}

	g_warning("Error opening PCM device \"/dev/adec_pcm\": %s\n",
		  strerror(errno));

	return false;
}

static void *
mvp_output_init(G_GNUC_UNUSED const struct audio_format *audio_format,
		G_GNUC_UNUSED const struct config_param *param)
{
	struct mvp_data *md = g_new(struct mvp_data, 1);
	md->fd = -1;

	return md;
}

static void
mvp_output_finish(void *data)
{
	struct mvp_data *md = data;
	g_free(md);
}

static int
mvp_set_pcm_params(struct mvp_data *md, unsigned long rate, int channels,
		   int big_endian, unsigned bits)
{
	unsigned iloop;
	unsigned mix[5];

	if (channels == 1)
		mix[0] = 1;
	else if (channels == 2)
		mix[0] = 0;
	else
		return -1;

	/* 0,1=24bit(24) , 2,3=16bit */
	if (bits == 16)
		mix[1] = 2;
	else if (bits == 24)
		mix[1] = 0;
	else
		return -1;

	mix[3] = 0;	/* stream type? */

	if (big_endian == 1)
		mix[4] = 1;
	else if (big_endian == 0)
		mix[4] = 0;
	else
		return -1;

	/*
	 * if there is an exact match for the frequency, use it.
	 */
	for (iloop = 0; iloop < G_N_ELEMENTS(mvp_sample_rates); iloop++) {
		if (rate == mvp_sample_rates[iloop][1]) {
			mix[2] = mvp_sample_rates[iloop][0];
			break;
		}
	}

	if (iloop >= G_N_ELEMENTS(mvp_sample_rates)) {
		g_warning("Can not find suitable output frequency for %ld\n",
			  rate);
		return -1;
	}

	if (ioctl(md->fd, MVP_SET_AUD_FORMAT, &mix) < 0) {
		g_warning("Can not set audio format\n");
		return -1;
	}

	if (ioctl(md->fd, MVP_SET_AUD_SYNC, 2) != 0) {
		g_warning("Can not set audio sync\n");
		return -1;
	}

	if (ioctl(md->fd, MVP_SET_AUD_PLAY, 0) < 0) {
		g_warning("Can not set audio play mode\n");
		return -1;
	}

	return 0;
}

static bool
mvp_output_open(void *data, struct audio_format *audio_format)
{
	struct mvp_data *md = data;
	long long int stc = 0;
	int mix[5] = { 0, 2, 7, 1, 0 };

	if ((md->fd = open("/dev/adec_pcm", O_RDWR | O_NONBLOCK)) < 0) {
		g_warning("Error opening /dev/adec_pcm: %s\n",
			  strerror(errno));
		return false;
	}
	if (ioctl(md->fd, MVP_SET_AUD_SRC, 1) < 0) {
		g_warning("Error setting audio source: %s\n",
			  strerror(errno));
		return false;
	}
	if (ioctl(md->fd, MVP_SET_AUD_STREAMTYPE, 0) < 0) {
		g_warning("Error setting audio streamtype: %s\n",
			  strerror(errno));
		return false;
	}
	if (ioctl(md->fd, MVP_SET_AUD_FORMAT, &mix) < 0) {
		g_warning("Error setting audio format: %s\n",
			  strerror(errno));
		return false;
	}
	ioctl(md->fd, MVP_SET_AUD_STC, &stc);
	if (ioctl(md->fd, MVP_SET_AUD_BYPASS, 1) < 0) {
		g_warning("Error setting audio streamtype: %s\n",
			  strerror(errno));
		return false;
	}
	mvp_set_pcm_params(md, audio_format->sample_rate,
			   audio_format->channels,
			   MVP_USE_LITTLE_ENDIAN, audio_format->bits);
	md->audio_format = *audio_format;
	return true;
}

static void mvp_output_close(void *data)
{
	struct mvp_data *md = data;
	if (md->fd >= 0)
		close(md->fd);
	md->fd = -1;
}

static void mvp_output_cancel(void *data)
{
	struct mvp_data *md = data;
	if (md->fd >= 0) {
		ioctl(md->fd, MVP_SET_AUD_RESET, 0x11);
		close(md->fd);
		md->fd = -1;
	}
}

static size_t
mvp_output_play(void *data, const void *chunk, size_t size)
{
	struct mvp_data *md = data;
	ssize_t ret;

	/* reopen the device since it was closed by dropBufferedAudio */
	if (md->fd < 0)
		mvp_output_open(md, &md->audio_format);

	while (true) {
		ret = write(md->fd, chunk, size);
		if (ret > 0)
			return (size_t)ret;

		if (ret < 0) {
			if (errno == EINTR)
				continue;
			g_warning("closing mvp PCM device due to write error: "
				  "%s\n", strerror(errno));
			return 0;
		}
	}
}

const struct audio_output_plugin mvp_output_plugin = {
	.name = "mvp",
	.test_default_device = mvp_output_test_default_device,
	.init = mvp_output_init,
	.finish = mvp_output_finish,
	.open = mvp_output_open,
	.close = mvp_output_close,
	.play = mvp_output_play,
	.cancel = mvp_output_cancel,
};