summaryrefslogtreecommitdiff
path: root/src/fb.c
blob: e3f4f0d5e20537cb52989acb97de875844028f5f (plain)
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
/*
 * Copyright 2013  Samsung Electronics Co., Ltd
 *
 * Licensed under the Flora License, Version 1.1 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://floralicense.org/license/
 *
 * 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 <unistd.h> /* access */
#include <errno.h>

#include <dlog.h>
#include <Ecore_Evas.h>
#include <Evas.h>
#include <livebox-errno.h>

#include "util.h"
#include "conf.h"
#include "debug.h"
#include "buffer_handler.h"
#include "fb.h"

int errno;

struct fb_info {
	Ecore_Evas *ee;

	struct buffer_info *buffer;
};

HAPI int fb_init(void)
{
	return LB_STATUS_SUCCESS;
}

HAPI int fb_fini(void)
{
	return LB_STATUS_SUCCESS;
}

static void *alloc_fb(void *data, int size)
{
	struct fb_info *info = data;

	DbgPrint("FB size: %d\n", size);

	if (buffer_handler_load(info->buffer) < 0) {
		ErrPrint("Failed to load buffer handler\n");
		return NULL;
	}

	return buffer_handler_fb(info->buffer);
}

static void free_fb(void *data, void *ptr)
{
	struct fb_info *info = data;

	if (!info->buffer) {
		ErrPrint("Buffer is not valid (maybe already released)\n");
		return;
	}

	if (buffer_handler_fb(info->buffer) != ptr)
		ErrPrint("Buffer pointer is not matched\n");

	(void)buffer_handler_unload(info->buffer);
}

HAPI struct fb_info *fb_create(struct inst_info *inst, int w, int h, enum buffer_type type)
{
	struct fb_info *info;

	info = calloc(1, sizeof(*info));
	if (!info) {
		ErrPrint("Heap: %s\n", strerror(errno));
		return NULL;
	}

	info->buffer = buffer_handler_create(inst, type, w, h, sizeof(int));
	if (!info->buffer) {
		ErrPrint("Failed to create a buffer\n");
		DbgFree(info);
		return NULL;
	}

	info->ee = NULL;
	return info;
}

static void sw_render_pre_cb(void *data, Evas *e, void *event_info)
{
	struct fb_info *info = data;
	int w;
	int h;

	buffer_handler_get_size(info->buffer, &w, &h);
	evas_damage_rectangle_add(e, 0, 0, w, h);
}

static void sw_render_post_cb(void *data, Evas *e, void *event_info)
{
        void *canvas;
        Ecore_Evas *internal_ee;
	int x, y, w, h;

        internal_ee = ecore_evas_ecore_evas_get(e);
        if (!internal_ee) {
		ErrPrint("Failed to get ecore evas\n");
                return;
        }

        // Get a pointer of a buffer of the virtual canvas
        canvas = (void*)ecore_evas_buffer_pixels_get(internal_ee);
        if (!canvas) {
		ErrPrint("Failed to get pixel canvas\n");
                return;
        }

	ecore_evas_geometry_get(internal_ee, &x, &y, &w, &h);
	evas_data_argb_unpremul(canvas, w * h);
}

static void render_pre_cb(void *data, Evas *e, void *event_info)
{
	fb_pixmap_render_pre(data);
	sw_render_pre_cb(data, e, event_info);
}

static void render_post_cb(void *data, Evas *e, void *event_info)
{
	sw_render_post_cb(data, e, event_info);
	fb_pixmap_render_post(data);
}

HAPI int fb_create_buffer(struct fb_info *info)
{
	int ow;
	int oh;
	Evas *e;

	buffer_handler_get_size(info->buffer, &ow, &oh);
	DbgPrint("Buffer handler size: %dx%d\n", ow, oh);
	if (ow == 0 && oh == 0) {
		DbgPrint("ZERO Size FB accessed\n");
		return LB_STATUS_SUCCESS;
	}

	if (info->ee) {
		int w = 0;
		int h = 0;

		ecore_evas_geometry_get(info->ee, NULL, NULL, &w, &h);
		if (w != ow || h != oh) {
			ErrPrint("EE exists, size mismatched requested (%dx%d) but (%dx%d)\n", ow, oh, w, h);
			ecore_evas_resize(info->ee, ow, oh);
		}

		return LB_STATUS_SUCCESS;
	}

	info->ee = ecore_evas_buffer_allocfunc_new(ow, oh, alloc_fb, free_fb, info);
	if (!info->ee) {
		ErrPrint("Failed to create a buffer\n");
		return LB_STATUS_ERROR_FAULT;
	}

	e = ecore_evas_get(info->ee);
	if (buffer_handler_type(info->buffer) == BUFFER_TYPE_PIXMAP) {
		evas_event_callback_add(e, EVAS_CALLBACK_RENDER_PRE, render_pre_cb, info);
		evas_event_callback_add(e, EVAS_CALLBACK_RENDER_POST, render_post_cb, info);

		/*!
		 * \note
		 * ecore_evas_alpha_set tries to access the canvas buffer.
		 * Without any render_pre/render_post callback.
		 */
		fb_pixmap_render_pre(info);
		ecore_evas_alpha_set(info->ee, EINA_TRUE);
		fb_pixmap_render_post(info);
	} else {
		evas_event_callback_add(e, EVAS_CALLBACK_RENDER_PRE, sw_render_pre_cb, info);
		evas_event_callback_add(e, EVAS_CALLBACK_RENDER_POST, sw_render_post_cb, info);
		ecore_evas_alpha_set(info->ee, EINA_TRUE);
	}

	return LB_STATUS_SUCCESS;
}

HAPI int fb_destroy_buffer(struct fb_info *info)
{
	if (!info->ee) {
		ErrPrint("EE is not exists (Maybe ZERO byte ee?)\n");
		return LB_STATUS_ERROR_INVALID;
	}

	if (buffer_handler_type(info->buffer) == BUFFER_TYPE_PIXMAP) {
		Evas *e;
		e = ecore_evas_get(info->ee);
		if (e) {
			evas_event_callback_del(e, EVAS_CALLBACK_RENDER_POST, render_post_cb);
			evas_event_callback_del(e, EVAS_CALLBACK_RENDER_PRE, render_pre_cb);
		}
	}

	ecore_evas_free(info->ee);
	info->ee = NULL;
	return LB_STATUS_SUCCESS;
}

HAPI int fb_destroy(struct fb_info *info)
{
	fb_destroy_buffer(info);
	DbgFree(info);
	return LB_STATUS_SUCCESS;
}

HAPI Ecore_Evas * const fb_canvas(struct fb_info *info)
{
	return info->ee;
}

HAPI const char *fb_id(struct fb_info *fb)
{
	return fb ? buffer_handler_id(fb->buffer) : "";
}

HAPI int fb_resize(struct fb_info *info, int w, int h)
{
	buffer_handler_update_size(info->buffer, w, h);

	if (info->ee) {
		ecore_evas_resize(info->ee, w, h);
	} else if (!info->ee && !info->buffer) {
		/*!
		 * This object has no size at the initial time.
		 * Create a new buffer and use it
		 */
	}

	return LB_STATUS_SUCCESS;
}

HAPI int fb_get_size(struct fb_info *info, int *w, int *h)
{
	return buffer_handler_get_size(info->buffer, w, h);
}

HAPI void fb_sync(struct fb_info *info)
{
	buffer_handler_flush(info->buffer);
}

HAPI void *fb_pixmap_render_pre(struct fb_info *info)
{
	void *canvas;
	canvas = buffer_handler_pixmap_acquire_buffer(info->buffer);
	return canvas;
}

HAPI int fb_pixmap_render_post(struct fb_info *info)
{
	void *canvas;

	/*!
	 * \note
	 * info->buffer == struct buffer_info
	 */
	canvas = buffer_handler_pixmap_buffer(info->buffer);
	return buffer_handler_pixmap_release_buffer(canvas);
}

/* End of a file */