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
|
/**
* coopgammad -- Cooperative gamma server
* Copyright (C) 2016 Mattias Andrée (maandree@kth.se)
*
* 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 3 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, see <http://www.gnu.org/licenses/>.
*/
#include "gamma.h"
#include "crtc.h"
#include "../state.h"
#include "../communication.h"
#include "../util.h"
#include <errno.h>
#include <string.h>
#if defined(__clang__)
# pragma GCC diagnostic ignored "-Wswitch-enum"
#endif
/**
* Handle a ‘Command: set-gamma’ message
*
* @param conn The index of the connection
* @param message_id The value of the ‘Message ID’ header
* @param crtc The value of the ‘CRTC’ header
* @return Zero on success (even if ignored), -1 on error,
* 1 if connection closed
*/
int handle_get_gamma_info(size_t conn, const char* restrict message_id, const char* restrict crtc)
{
struct output* restrict output;
char* restrict buf;
char depth[3];
const char* supported;
size_t n;
if (crtc == NULL) return send_error("protocol error: 'CRTC' header omitted");
output = output_find_by_name(crtc, outputs, outputs_n);
if (output == NULL)
return send_error("selected CRTC does not exist");
switch (output->depth)
{
case -2: strcpy(depth, "d"); break;
case -1: strcpy(depth, "f"); break;
default:
sprintf(depth, "%i", output->depth);
break;
}
switch (output->supported)
{
case LIBGAMMA_YES: supported = "yes"; break;
case LIBGAMMA_NO: supported = "no"; break;
default: supported = "maybe"; break;
}
MAKE_MESSAGE(&buf, &n, 0,
"In response to: %s\n"
"Cooperative: yes\n" /* In mds: say ‘no’, mds-coopgamma changes to ‘yes’.” */
"Depth: %s\n"
"Red size: %zu\n"
"Green size: %zu\n"
"Blue size: %zu\n"
"Gamma support: %s\n"
"\n",
message_id, depth, output->red_size, output->green_size,
output->blue_size, supported);
return send_message(conn, buf, n);
}
/**
* Set the gamma ramps on an output
*
* @param output The output
* @param ramps The gamma ramps
*/
void set_gamma(const struct output* restrict output, const union gamma_ramps* restrict ramps)
{
int r = 0;
if (!connected)
return;
switch (output->depth)
{
case 8: r = libgamma_crtc_set_gamma_ramps8(output->crtc, ramps->u8); break;
case 16: r = libgamma_crtc_set_gamma_ramps16(output->crtc, ramps->u16); break;
case 32: r = libgamma_crtc_set_gamma_ramps32(output->crtc, ramps->u32); break;
case 64: r = libgamma_crtc_set_gamma_ramps64(output->crtc, ramps->u64); break;
case -1: r = libgamma_crtc_set_gamma_rampsf(output->crtc, ramps->f); break;
case -2: r = libgamma_crtc_set_gamma_rampsd(output->crtc, ramps->d); break;
default:
abort();
}
if (r)
libgamma_perror(argv0, r); /* Not fatal */
}
/**
* Store all current gamma ramps
*
* @return Zero on success, -1 on error
*/
int initialise_gamma_info(void)
{
libgamma_crtc_information_t info;
int saved_errno;
size_t i;
for (i = 0; i < outputs_n; i++)
{
libgamma_get_crtc_information(&info, crtcs + i,
LIBGAMMA_CRTC_INFO_EDID |
LIBGAMMA_CRTC_INFO_MACRO_RAMP |
LIBGAMMA_CRTC_INFO_GAMMA_SUPPORT |
LIBGAMMA_CRTC_INFO_CONNECTOR_NAME);
outputs[i].depth = info.gamma_depth_error ? 0 : info.gamma_depth;
outputs[i].red_size = info.gamma_size_error ? 0 : info.red_gamma_size;
outputs[i].green_size = info.gamma_size_error ? 0 : info.green_gamma_size;
outputs[i].blue_size = info.gamma_size_error ? 0 : info.blue_gamma_size;
outputs[i].supported = info.gamma_support_error ? 0 : info.gamma_support;
if (outputs[i].depth == 0 || outputs[i].red_size == 0 ||
outputs[i].green_size == 0 || outputs[i].blue_size == 0)
outputs[i].supported = 0;
outputs[i].name = get_crtc_name(&info, crtcs + i);
saved_errno = errno;
outputs[i].crtc = crtcs + i;
libgamma_crtc_information_destroy(&info);
outputs[i].ramps_size = outputs[i].red_size + outputs[i].green_size + outputs[i].blue_size;
switch (outputs[i].depth)
{
default:
outputs[i].depth = 64;
/* Fall through */
case 8:
case 16:
case 32:
case 64: outputs[i].ramps_size *= (size_t)(outputs[i].depth / 8); break;
case -2: outputs[i].ramps_size *= sizeof(double); break;
case -1: outputs[i].ramps_size *= sizeof(float); break;
}
errno = saved_errno;
if (outputs[i].name == NULL)
return -1;
}
return 0;
}
/**
* Store all current gamma ramps
*/
void store_gamma(void)
{
int gerror;
size_t i;
#define LOAD_RAMPS(SUFFIX, MEMBER) \
do \
{ \
libgamma_gamma_ramps##SUFFIX##_initialise(&(outputs[i].saved_ramps.MEMBER)); \
gerror = libgamma_crtc_get_gamma_ramps##SUFFIX(outputs[i].crtc, &(outputs[i].saved_ramps.MEMBER)); \
if (gerror) \
{ \
libgamma_perror(argv0, gerror); \
outputs[i].supported = LIBGAMMA_NO; \
libgamma_gamma_ramps##SUFFIX##_destroy(&(outputs[i].saved_ramps.MEMBER)); \
memset(&(outputs[i].saved_ramps.MEMBER), 0, sizeof(outputs[i].saved_ramps.MEMBER)); \
} \
} \
while (0)
for (i = 0; i < outputs_n; i++)
{
if (outputs[i].supported == LIBGAMMA_NO)
continue;
switch (outputs[i].depth)
{
case 64: LOAD_RAMPS(64, u64); break;
case 32: LOAD_RAMPS(32, u32); break;
case 16: LOAD_RAMPS(16, u16); break;
case 8: LOAD_RAMPS( 8, u8); break;
case -2: LOAD_RAMPS(d, d); break;
case -1: LOAD_RAMPS(f, f); break;
default: /* impossible */ break;
}
}
}
/**
* Restore all gamma ramps
*/
void restore_gamma(void)
{
size_t i;
int gerror;
#define RESTORE_RAMPS(SUFFIX, MEMBER) \
do \
if (outputs[i].saved_ramps.MEMBER.red != NULL) \
{ \
gerror = libgamma_crtc_set_gamma_ramps##SUFFIX(outputs[i].crtc, outputs[i].saved_ramps.MEMBER); \
if (gerror) \
libgamma_perror(argv0, gerror); \
} \
while (0)
for (i = 0; i < outputs_n; i++)
{
if (outputs[i].supported == LIBGAMMA_NO)
continue;
switch (outputs[i].depth)
{
case 64: RESTORE_RAMPS(64, u64); break;
case 32: RESTORE_RAMPS(32, u32); break;
case 16: RESTORE_RAMPS(16, u16); break;
case 8: RESTORE_RAMPS( 8, u8); break;
case -2: RESTORE_RAMPS(d, d); break;
case -1: RESTORE_RAMPS(f, f); break;
default: /* impossible */ break;
}
}
}
/**
* Reapplu all gamma ramps
*/
void reapply_gamma(void)
{
union gamma_ramps plain;
size_t i;
/* Reapply gamma ramps */
for (i = 0; i < outputs_n; i++)
{
struct output* output = outputs + i;
if (output->table_size > 0)
set_gamma(output, output->table_sums + output->table_size - 1);
else
{
make_plain_ramps(&plain, output);
set_gamma(output, &plain);
libgamma_gamma_ramps8_destroy(&(plain.u8));
}
}
}
|
