The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1 | /* Copyright (C) 2007-2008 The Android Open Source Project |
| 2 | ** |
| 3 | ** This software is licensed under the terms of the GNU General Public |
| 4 | ** License version 2, as published by the Free Software Foundation, and |
| 5 | ** may be copied, distributed, and modified under those terms. |
| 6 | ** |
| 7 | ** This program is distributed in the hope that it will be useful, |
| 8 | ** but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 9 | ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 10 | ** GNU General Public License for more details. |
| 11 | */ |
David 'Digit' Turner | e3fdd07 | 2011-02-02 14:43:23 +0100 | [diff] [blame] | 12 | #include "android/framebuffer.h" |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 13 | #include <memory.h> |
| 14 | #include <stdlib.h> |
| 15 | |
| 16 | typedef struct { |
| 17 | /* client fields, these correspond to code that waits for updates before displaying them */ |
| 18 | /* at the moment, only one client is supported */ |
| 19 | void* fb_opaque; |
| 20 | QFrameBufferUpdateFunc fb_update; |
| 21 | QFrameBufferRotateFunc fb_rotate; |
David 'Digit' Turner | 055ae42 | 2010-07-27 11:34:16 -0700 | [diff] [blame] | 22 | QFrameBufferPollFunc fb_poll; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 23 | QFrameBufferDoneFunc fb_done; |
| 24 | |
| 25 | void* pr_opaque; |
| 26 | QFrameBufferCheckUpdateFunc pr_check; |
| 27 | QFrameBufferInvalidateFunc pr_invalidate; |
| 28 | QFrameBufferDetachFunc pr_detach; |
| 29 | |
| 30 | } QFrameBufferExtra; |
| 31 | |
| 32 | |
| 33 | static int |
| 34 | _get_pitch( int width, QFrameBufferFormat format ) |
| 35 | { |
| 36 | |
| 37 | switch (format) { |
| 38 | case QFRAME_BUFFER_RGB565: |
| 39 | return width*2; |
David 'Digit' Turner | 97d795c | 2011-01-16 01:42:37 +0100 | [diff] [blame] | 40 | case QFRAME_BUFFER_RGBX_8888: |
| 41 | return width*4; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 42 | default: |
| 43 | return -1; |
| 44 | } |
| 45 | } |
| 46 | |
Vladimir Chtchetkine | e95660a | 2010-12-20 08:28:03 -0800 | [diff] [blame] | 47 | static int |
| 48 | _get_bits_per_pixel(QFrameBufferFormat format) |
| 49 | { |
| 50 | |
| 51 | switch (format) { |
| 52 | case QFRAME_BUFFER_RGB565: |
| 53 | return 16; |
David 'Digit' Turner | 97d795c | 2011-01-16 01:42:37 +0100 | [diff] [blame] | 54 | case QFRAME_BUFFER_RGBX_8888: |
| 55 | return 32; |
Vladimir Chtchetkine | e95660a | 2010-12-20 08:28:03 -0800 | [diff] [blame] | 56 | default: |
| 57 | return -1; |
| 58 | } |
| 59 | } |
| 60 | |
| 61 | static int |
| 62 | _get_bytes_per_pixel(QFrameBufferFormat format) |
| 63 | { |
| 64 | |
| 65 | switch (format) { |
| 66 | case QFRAME_BUFFER_RGB565: |
| 67 | return 2; |
David 'Digit' Turner | 97d795c | 2011-01-16 01:42:37 +0100 | [diff] [blame] | 68 | case QFRAME_BUFFER_RGBX_8888: |
| 69 | return 4; |
Vladimir Chtchetkine | e95660a | 2010-12-20 08:28:03 -0800 | [diff] [blame] | 70 | default: |
| 71 | return -1; |
| 72 | } |
| 73 | } |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 74 | |
| 75 | int |
| 76 | qframebuffer_init( QFrameBuffer* qfbuff, |
| 77 | int width, |
| 78 | int height, |
| 79 | int rotation, |
| 80 | QFrameBufferFormat format ) |
| 81 | { |
Vladimir Chtchetkine | e95660a | 2010-12-20 08:28:03 -0800 | [diff] [blame] | 82 | int pitch, bytes_per_pixel, bits_per_pixel; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 83 | |
| 84 | rotation &= 3; |
| 85 | |
| 86 | if (!qfbuff || width < 0 || height < 0) |
| 87 | return -1; |
| 88 | |
| 89 | pitch = _get_pitch( width, format ); |
| 90 | if (pitch < 0) |
| 91 | return -1; |
| 92 | |
David 'Digit' Turner | 97d795c | 2011-01-16 01:42:37 +0100 | [diff] [blame] | 93 | bits_per_pixel = _get_bits_per_pixel(format); |
| 94 | if (bits_per_pixel < 0) |
| 95 | return -1; |
Vladimir Chtchetkine | e95660a | 2010-12-20 08:28:03 -0800 | [diff] [blame] | 96 | |
David 'Digit' Turner | 97d795c | 2011-01-16 01:42:37 +0100 | [diff] [blame] | 97 | bytes_per_pixel = _get_bytes_per_pixel(format); |
Vladimir Chtchetkine | e95660a | 2010-12-20 08:28:03 -0800 | [diff] [blame] | 98 | if (bytes_per_pixel < 0) |
| 99 | return -1; |
| 100 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 101 | memset( qfbuff, 0, sizeof(*qfbuff) ); |
| 102 | |
| 103 | qfbuff->extra = calloc( 1, sizeof(QFrameBufferExtra) ); |
| 104 | if (qfbuff->extra == NULL) |
| 105 | return -1; |
| 106 | |
| 107 | qfbuff->pixels = calloc( pitch, height ); |
| 108 | if (qfbuff->pixels == NULL && (height > 0 && pitch > 0)) { |
| 109 | free( qfbuff->extra ); |
| 110 | return -1; |
| 111 | } |
| 112 | |
| 113 | qfbuff->width = width; |
| 114 | qfbuff->height = height; |
| 115 | qfbuff->pitch = pitch; |
| 116 | qfbuff->format = format; |
Vladimir Chtchetkine | e95660a | 2010-12-20 08:28:03 -0800 | [diff] [blame] | 117 | qfbuff->bits_per_pixel = bits_per_pixel; |
| 118 | qfbuff->bytes_per_pixel = bytes_per_pixel; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 119 | |
| 120 | qframebuffer_set_dpi( qfbuff, DEFAULT_FRAMEBUFFER_DPI, DEFAULT_FRAMEBUFFER_DPI ); |
| 121 | return 0; |
| 122 | } |
| 123 | |
| 124 | |
| 125 | void |
| 126 | qframebuffer_set_dpi( QFrameBuffer* qfbuff, |
| 127 | int x_dpi, |
| 128 | int y_dpi ) |
| 129 | { |
| 130 | /* dpi = dots / inch |
| 131 | ** inch = dots / dpi |
| 132 | ** mm / 25.4 = dots / dpi |
| 133 | ** mm = (dots * 25.4)/dpi |
| 134 | */ |
| 135 | qfbuff->phys_width_mm = (int)(0.5 + 25.4 * qfbuff->width / x_dpi); |
| 136 | qfbuff->phys_height_mm = (int)(0.5 + 25.4 * qfbuff->height / y_dpi); |
| 137 | } |
| 138 | |
| 139 | /* alternative to qframebuffer_set_dpi where one can set the physical dimensions directly */ |
| 140 | /* in millimeters. for the record 1 inch = 25.4 mm */ |
| 141 | void |
| 142 | qframebuffer_set_mm( QFrameBuffer* qfbuff, |
| 143 | int width_mm, |
| 144 | int height_mm ) |
| 145 | { |
| 146 | qfbuff->phys_width_mm = width_mm; |
| 147 | qfbuff->phys_height_mm = height_mm; |
| 148 | } |
| 149 | |
| 150 | void |
| 151 | qframebuffer_update( QFrameBuffer* qfbuff, int x, int y, int w, int h ) |
| 152 | { |
| 153 | QFrameBufferExtra* extra = qfbuff->extra; |
| 154 | |
| 155 | if (extra->fb_update) |
| 156 | extra->fb_update( extra->fb_opaque, x, y, w, h ); |
| 157 | } |
| 158 | |
| 159 | |
| 160 | void |
| 161 | qframebuffer_add_client( QFrameBuffer* qfbuff, |
| 162 | void* fb_opaque, |
| 163 | QFrameBufferUpdateFunc fb_update, |
| 164 | QFrameBufferRotateFunc fb_rotate, |
David 'Digit' Turner | 055ae42 | 2010-07-27 11:34:16 -0700 | [diff] [blame] | 165 | QFrameBufferPollFunc fb_poll, |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 166 | QFrameBufferDoneFunc fb_done ) |
| 167 | { |
| 168 | QFrameBufferExtra* extra = qfbuff->extra; |
| 169 | |
| 170 | extra->fb_opaque = fb_opaque; |
| 171 | extra->fb_update = fb_update; |
| 172 | extra->fb_rotate = fb_rotate; |
David 'Digit' Turner | 055ae42 | 2010-07-27 11:34:16 -0700 | [diff] [blame] | 173 | extra->fb_poll = fb_poll; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 174 | extra->fb_done = fb_done; |
| 175 | } |
| 176 | |
| 177 | void |
| 178 | qframebuffer_set_producer( QFrameBuffer* qfbuff, |
| 179 | void* opaque, |
| 180 | QFrameBufferCheckUpdateFunc pr_check, |
| 181 | QFrameBufferInvalidateFunc pr_invalidate, |
| 182 | QFrameBufferDetachFunc pr_detach ) |
| 183 | { |
| 184 | QFrameBufferExtra* extra = qfbuff->extra; |
| 185 | |
| 186 | extra->pr_opaque = opaque; |
| 187 | extra->pr_check = pr_check; |
| 188 | extra->pr_invalidate = pr_invalidate; |
| 189 | extra->pr_detach = pr_detach; |
| 190 | } |
| 191 | |
| 192 | |
| 193 | void |
| 194 | qframebuffer_rotate( QFrameBuffer* qfbuff, int rotation ) |
| 195 | { |
| 196 | QFrameBufferExtra* extra = qfbuff->extra; |
| 197 | |
| 198 | if ((rotation ^ qfbuff->rotation) & 1) { |
| 199 | /* swap width and height if new rotation requires it */ |
| 200 | int temp = qfbuff->width; |
| 201 | qfbuff->width = qfbuff->height; |
| 202 | qfbuff->height = temp; |
| 203 | qfbuff->pitch = _get_pitch( qfbuff->width, qfbuff->format ); |
| 204 | |
| 205 | temp = qfbuff->phys_width_mm; |
| 206 | qfbuff->phys_width_mm = qfbuff->phys_height_mm; |
| 207 | qfbuff->phys_height_mm = temp; |
| 208 | } |
| 209 | qfbuff->rotation = rotation; |
| 210 | |
| 211 | if (extra->fb_rotate) |
| 212 | extra->fb_rotate( extra->fb_opaque, rotation ); |
| 213 | } |
| 214 | |
David 'Digit' Turner | 055ae42 | 2010-07-27 11:34:16 -0700 | [diff] [blame] | 215 | void |
| 216 | qframebuffer_poll( QFrameBuffer* qfbuff ) |
| 217 | { |
| 218 | QFrameBufferExtra* extra = qfbuff->extra; |
| 219 | |
David 'Digit' Turner | 73f3166 | 2010-10-13 16:52:14 +0200 | [diff] [blame] | 220 | if (extra && extra->fb_poll) |
David 'Digit' Turner | 055ae42 | 2010-07-27 11:34:16 -0700 | [diff] [blame] | 221 | extra->fb_poll( extra->fb_opaque ); |
| 222 | } |
| 223 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 224 | |
| 225 | extern void |
| 226 | qframebuffer_done( QFrameBuffer* qfbuff ) |
| 227 | { |
| 228 | QFrameBufferExtra* extra = qfbuff->extra; |
| 229 | |
| 230 | if (extra) { |
| 231 | if (extra->pr_detach) |
| 232 | extra->pr_detach( extra->pr_opaque ); |
| 233 | |
| 234 | if (extra->fb_done) |
| 235 | extra->fb_done( extra->fb_opaque ); |
| 236 | } |
| 237 | |
| 238 | free( qfbuff->pixels ); |
| 239 | free( qfbuff->extra ); |
| 240 | memset( qfbuff, 0, sizeof(*qfbuff) ); |
| 241 | } |
| 242 | |
| 243 | |
| 244 | #define MAX_FRAME_BUFFERS 8 |
| 245 | |
| 246 | static QFrameBuffer* framebuffer_fifo[ MAX_FRAME_BUFFERS ]; |
| 247 | static int framebuffer_fifo_rpos; |
| 248 | static int framebuffer_fifo_count; |
| 249 | |
| 250 | void |
| 251 | qframebuffer_fifo_add( QFrameBuffer* qfbuff ) |
| 252 | { |
| 253 | if (framebuffer_fifo_count >= MAX_FRAME_BUFFERS) |
| 254 | return; |
| 255 | |
| 256 | framebuffer_fifo[ framebuffer_fifo_count++ ] = qfbuff; |
| 257 | } |
| 258 | |
| 259 | |
| 260 | QFrameBuffer* |
| 261 | qframebuffer_fifo_get( void ) |
| 262 | { |
| 263 | if (framebuffer_fifo_rpos >= framebuffer_fifo_count) |
| 264 | return NULL; |
| 265 | |
| 266 | return framebuffer_fifo[ framebuffer_fifo_rpos++ ]; |
| 267 | } |
| 268 | |
| 269 | |
| 270 | void |
| 271 | qframebuffer_check_updates( void ) |
| 272 | { |
| 273 | int nn; |
| 274 | for (nn = 0; nn < framebuffer_fifo_count; nn++) { |
| 275 | QFrameBuffer* q = framebuffer_fifo[nn]; |
| 276 | QFrameBufferExtra* extra = q->extra; |
| 277 | |
| 278 | if (extra->pr_check) |
| 279 | extra->pr_check( extra->pr_opaque ); |
| 280 | } |
| 281 | } |
| 282 | |
| 283 | void |
David 'Digit' Turner | 07db349 | 2011-02-02 17:36:34 +0100 | [diff] [blame] | 284 | qframebuffer_pulse( void ) |
| 285 | { |
| 286 | int nn; |
| 287 | for (nn = 0; nn < framebuffer_fifo_count; nn++) { |
| 288 | qframebuffer_poll(framebuffer_fifo[nn]); |
| 289 | } |
| 290 | } |
| 291 | |
| 292 | void |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 293 | qframebuffer_invalidate_all( void ) |
| 294 | { |
| 295 | int nn; |
| 296 | for (nn = 0; nn < framebuffer_fifo_count; nn++) { |
| 297 | QFrameBuffer* q = framebuffer_fifo[nn]; |
| 298 | QFrameBufferExtra* extra = q->extra; |
| 299 | |
| 300 | if (extra->pr_invalidate) |
| 301 | extra->pr_invalidate( extra->pr_opaque ); |
| 302 | } |
| 303 | } |