1 /*
2 * Copyright (c) 2011-2014, The Linux Foundation. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are
6 * met:
7 * * Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * * Redistributions in binary form must reproduce the above
10 * copyright notice, this list of conditions and the following
11 * disclaimer in the documentation and/or other materials provided
12 * with the distribution.
13 * * Neither the name of The Linux Foundation nor the names of its
14 * contributors may be used to endorse or promote products derived
15 * from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
21 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
22 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
23 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
24 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
25 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
26 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
27 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29
30 #ifndef OVERLAY_UTILS_H
31 #define OVERLAY_UTILS_H
32
33 #include <cutils/log.h> // ALOGE, etc
34 #include <errno.h>
35 #include <fcntl.h> // open, O_RDWR, etc
36 #include <hardware/hardware.h>
37 #include <hardware/gralloc.h> // buffer_handle_t
38 #include <linux/msm_mdp.h> // flags
39 #include <linux/msm_rotator.h>
40 #include <stdio.h>
41 #include <stdlib.h>
42 #include <string.h>
43 #include <sys/stat.h>
44 #include <sys/types.h>
45 #include <utils/Log.h>
46 #include "gralloc_priv.h" //for interlace
47
48 // Older platforms do not support Venus
49 #ifndef VENUS_COLOR_FORMAT
50 #define MDP_Y_CBCR_H2V2_VENUS MDP_IMGTYPE_LIMIT
51 #endif
52
53 /*
54 *
55 * Collection of utilities functions/structs/enums etc...
56 *
57 * */
58
59 // comment that out if you want to remove asserts
60 // or put it as -D in Android.mk. your choice.
61 #define OVERLAY_HAS_ASSERT
62
63 #ifdef OVERLAY_HAS_ASSERT
64 # define OVASSERT(x, ...) if(!(x)) { ALOGE(__VA_ARGS__); abort(); }
65 #else
66 # define OVASSERT(x, ...) ALOGE_IF(!(x), __VA_ARGS__)
67 #endif // OVERLAY_HAS_ASSERT
68
69 #define DEBUG_OVERLAY 0
70 #define PROFILE_OVERLAY 0
71
72 #ifndef MDSS_MDP_RIGHT_MIXER
73 #define MDSS_MDP_RIGHT_MIXER 0x100
74 #endif
75
76 #ifndef MDP_OV_PIPE_FORCE_DMA
77 #define MDP_OV_PIPE_FORCE_DMA 0x4000
78 #endif
79
80 #ifndef MDSS_MDP_DUAL_PIPE
81 #define MDSS_MDP_DUAL_PIPE 0x200
82 #endif
83
84 #define FB_DEVICE_TEMPLATE "/dev/graphics/fb%u"
85
86 namespace overlay {
87
88 // fwd
89 class Overlay;
90 class OvFD;
91
92 /* helper function to open by using fbnum */
93 bool open(OvFD& fd, uint32_t fbnum, const char* const dev,
94 int flags = O_RDWR);
95
96 namespace utils {
97 struct Whf;
98 struct Dim;
99
setBit(uint32_t x,uint32_t mask)100 inline uint32_t setBit(uint32_t x, uint32_t mask) {
101 return (x | mask);
102 }
103
clrBit(uint32_t x,uint32_t mask)104 inline uint32_t clrBit(uint32_t x, uint32_t mask) {
105 return (x & ~mask);
106 }
107
108 /* Utility class to help avoid copying instances by making the copy ctor
109 * and assignment operator private
110 *
111 * Usage:
112 * class SomeClass : utils::NoCopy {...};
113 */
114 class NoCopy {
115 protected:
NoCopy()116 NoCopy(){}
~NoCopy()117 ~NoCopy() {}
118 private:
119 NoCopy(const NoCopy&);
120 const NoCopy& operator=(const NoCopy&);
121 };
122
123 bool isMdssRotator();
124 void normalizeCrop(uint32_t& xy, uint32_t& wh);
125
126 template <class Type>
127 void swapWidthHeight(Type& width, Type& height);
128
129 struct Dim {
DimDim130 Dim () : x(0), y(0),
131 w(0), h(0),
132 o(0) {}
DimDim133 Dim(uint32_t _x, uint32_t _y, uint32_t _w, uint32_t _h) :
134 x(_x), y(_y),
135 w(_w), h(_h) {}
DimDim136 Dim(uint32_t _x, uint32_t _y, uint32_t _w, uint32_t _h, uint32_t _o) :
137 x(_x), y(_y),
138 w(_w), h(_h),
139 o(_o) {}
checkDim140 bool check(uint32_t _w, uint32_t _h) const {
141 return (x+w <= _w && y+h <= _h);
142
143 }
144
145 bool operator==(const Dim& d) const {
146 return d.x == x && d.y == y &&
147 d.w == w && d.h == h &&
148 d.o == o;
149 }
150
151 bool operator!=(const Dim& d) const {
152 return !operator==(d);
153 }
154
155 void dump() const;
156 uint32_t x;
157 uint32_t y;
158 uint32_t w;
159 uint32_t h;
160 uint32_t o;
161 };
162
163 // TODO have Whfz
164
165 struct Whf {
WhfWhf166 Whf() : w(0), h(0), format(0), size(0) {}
WhfWhf167 Whf(uint32_t wi, uint32_t he, uint32_t f) :
168 w(wi), h(he), format(f), size(0) {}
WhfWhf169 Whf(uint32_t wi, uint32_t he, uint32_t f, uint32_t s) :
170 w(wi), h(he), format(f), size(s) {}
171 // FIXME not comparing size at the moment
172 bool operator==(const Whf& whf) const {
173 return whf.w == w && whf.h == h &&
174 whf.format == format;
175 }
176 bool operator!=(const Whf& whf) const {
177 return !operator==(whf);
178 }
179 void dump() const;
180 uint32_t w;
181 uint32_t h;
182 uint32_t format;
183 uint32_t size;
184 };
185
186 enum { MAX_PATH_LEN = 256 };
187
188 enum { DEFAULT_PLANE_ALPHA = 0xFF };
189
190 /**
191 * Rotator flags: not to be confused with orientation flags.
192 * Usually, you want to open the rotator to make sure it is
193 * ready for business.
194 * */
195 enum eRotFlags {
196 ROT_FLAGS_NONE = 0,
197 //Use rotator for 0 rotation. It is used anyway for others.
198 ROT_0_ENABLED = 1 << 0,
199 //Enable rotator downscale optimization for hardware bugs not handled in
200 //driver. If downscale optimizatation is required,
201 //then rotator will be used even if its 0 rotation case.
202 ROT_DOWNSCALE_ENABLED = 1 << 1,
203 ROT_PREROTATED = 1 << 2,
204 };
205
206 enum eRotDownscale {
207 ROT_DS_NONE = 0,
208 ROT_DS_HALF = 1,
209 ROT_DS_FOURTH = 2,
210 ROT_DS_EIGHTH = 3,
211 };
212
213 /*
214 * Various mdp flags like PIPE SHARE, DEINTERLACE etc...
215 * kernel/common/linux/msm_mdp.h
216 * INTERLACE_MASK: hardware/qcom/display/libgralloc/badger/fb_priv.h
217 * */
218 enum eMdpFlags {
219 OV_MDP_FLAGS_NONE = 0,
220 OV_MDP_PIPE_SHARE = MDP_OV_PIPE_SHARE,
221 OV_MDP_PIPE_FORCE_DMA = MDP_OV_PIPE_FORCE_DMA,
222 OV_MDP_DEINTERLACE = MDP_DEINTERLACE,
223 OV_MDP_SECURE_OVERLAY_SESSION = MDP_SECURE_OVERLAY_SESSION,
224 OV_MDP_SECURE_DISPLAY_OVERLAY_SESSION = MDP_SECURE_DISPLAY_OVERLAY_SESSION,
225 OV_MDP_SOURCE_ROTATED_90 = MDP_SOURCE_ROTATED_90,
226 OV_MDP_BACKEND_COMPOSITION = MDP_BACKEND_COMPOSITION,
227 OV_MDP_BLEND_FG_PREMULT = MDP_BLEND_FG_PREMULT,
228 OV_MDP_FLIP_H = MDP_FLIP_LR,
229 OV_MDP_FLIP_V = MDP_FLIP_UD,
230 OV_MDSS_MDP_RIGHT_MIXER = MDSS_MDP_RIGHT_MIXER,
231 OV_MDP_PP_EN = MDP_OVERLAY_PP_CFG_EN,
232 OV_MDSS_MDP_BWC_EN = MDP_BWC_EN,
233 OV_MDSS_MDP_DUAL_PIPE = MDSS_MDP_DUAL_PIPE,
234 OV_MDP_SOLID_FILL = MDP_SOLID_FILL,
235 };
236
237 enum eZorder {
238 ZORDER_0 = 0,
239 ZORDER_1,
240 ZORDER_2,
241 ZORDER_3,
242 Z_SYSTEM_ALLOC = 0xFFFF
243 };
244
245 enum eMdpPipeType {
246 OV_MDP_PIPE_RGB = 0,
247 OV_MDP_PIPE_VG,
248 OV_MDP_PIPE_DMA,
249 OV_MDP_PIPE_ANY, //Any
250 };
251
252 // Identify destination pipes
253 // TODO Names useless, replace with int and change all interfaces
254 enum eDest {
255 OV_P0 = 0,
256 OV_P1,
257 OV_P2,
258 OV_P3,
259 OV_P4,
260 OV_P5,
261 OV_P6,
262 OV_P7,
263 OV_P8,
264 OV_P9,
265 OV_INVALID,
266 OV_MAX = OV_INVALID,
267 };
268
269 /* Used when a buffer is split over 2 pipes and sent to display */
270 enum {
271 OV_LEFT_SPLIT = 0,
272 OV_RIGHT_SPLIT,
273 };
274
275 /* values for copybit_set_parameter(OVERLAY_TRANSFORM) */
276 enum eTransform {
277 /* No rot */
278 OVERLAY_TRANSFORM_0 = 0x0,
279 /* flip source image horizontally 0x1 */
280 OVERLAY_TRANSFORM_FLIP_H = HAL_TRANSFORM_FLIP_H,
281 /* flip source image vertically 0x2 */
282 OVERLAY_TRANSFORM_FLIP_V = HAL_TRANSFORM_FLIP_V,
283 /* rotate source image 180 degrees
284 * It is basically bit-or-ed H | V == 0x3 */
285 OVERLAY_TRANSFORM_ROT_180 = HAL_TRANSFORM_ROT_180,
286 /* rotate source image 90 degrees 0x4 */
287 OVERLAY_TRANSFORM_ROT_90 = HAL_TRANSFORM_ROT_90,
288 /* rotate source image 90 degrees and flip horizontally 0x5 */
289 OVERLAY_TRANSFORM_ROT_90_FLIP_H = HAL_TRANSFORM_ROT_90 |
290 HAL_TRANSFORM_FLIP_H,
291 /* rotate source image 90 degrees and flip vertically 0x6 */
292 OVERLAY_TRANSFORM_ROT_90_FLIP_V = HAL_TRANSFORM_ROT_90 |
293 HAL_TRANSFORM_FLIP_V,
294 /* rotate source image 270 degrees
295 * Basically 180 | 90 == 0x7 */
296 OVERLAY_TRANSFORM_ROT_270 = HAL_TRANSFORM_ROT_270,
297 /* rotate invalid like in Transform.h */
298 OVERLAY_TRANSFORM_INV = 0x80
299 };
300
301 enum eBlending {
302 OVERLAY_BLENDING_UNDEFINED = 0x0,
303 /* No blending */
304 OVERLAY_BLENDING_OPAQUE,
305 /* src.rgb + dst.rgb*(1-src_alpha) */
306 OVERLAY_BLENDING_PREMULT,
307 /* src.rgb * src_alpha + dst.rgb (1 - src_alpha) */
308 OVERLAY_BLENDING_COVERAGE,
309 };
310
311 // Used to consolidate pipe params
312 struct PipeArgs {
PipeArgsPipeArgs313 PipeArgs() : mdpFlags(OV_MDP_FLAGS_NONE),
314 zorder(Z_SYSTEM_ALLOC),
315 rotFlags(ROT_FLAGS_NONE),
316 planeAlpha(DEFAULT_PLANE_ALPHA),
317 blending(OVERLAY_BLENDING_COVERAGE){
318 }
319
320 PipeArgs(eMdpFlags f, Whf _whf,
321 eZorder z, eRotFlags r,
322 int pA = DEFAULT_PLANE_ALPHA, eBlending b = OVERLAY_BLENDING_COVERAGE) :
mdpFlagsPipeArgs323 mdpFlags(f),
324 whf(_whf),
325 zorder(z),
326 rotFlags(r),
327 planeAlpha(pA),
328 blending(b){
329 }
330
331 eMdpFlags mdpFlags; // for mdp_overlay flags
332 Whf whf;
333 eZorder zorder; // stage number
334 eRotFlags rotFlags;
335 int planeAlpha;
336 eBlending blending;
337 };
338
339 // Cannot use HW_OVERLAY_MAGNIFICATION_LIMIT, since at the time
340 // of integration, HW_OVERLAY_MAGNIFICATION_LIMIT was a define
341 enum { HW_OV_MAGNIFICATION_LIMIT = 20,
342 HW_OV_MINIFICATION_LIMIT = 8
343 };
344
setMdpFlags(eMdpFlags & f,eMdpFlags v)345 inline void setMdpFlags(eMdpFlags& f, eMdpFlags v) {
346 f = static_cast<eMdpFlags>(setBit(f, v));
347 }
348
clearMdpFlags(eMdpFlags & f,eMdpFlags v)349 inline void clearMdpFlags(eMdpFlags& f, eMdpFlags v) {
350 f = static_cast<eMdpFlags>(clrBit(f, v));
351 }
352
353 enum { FB0, FB1, FB2 };
354
355 struct ScreenInfo {
ScreenInfoScreenInfo356 ScreenInfo() : mFBWidth(0),
357 mFBHeight(0),
358 mFBbpp(0),
359 mFBystride(0) {}
360 void dump(const char* const s) const;
361 uint32_t mFBWidth;
362 uint32_t mFBHeight;
363 uint32_t mFBbpp;
364 uint32_t mFBystride;
365 };
366
367 int getMdpFormat(int format);
368 int getMdpFormat(int format, bool tileEnabled);
369 int getHALFormat(int mdpFormat);
370 void getDecimationFactor(const int& src_w, const int& src_h,
371 const int& dst_w, const int& dst_h, uint8_t& horzDeci,
372 uint8_t& vertDeci);
373
374 /* flip is upside down and such. V, H flip
375 * rotation is 90, 180 etc
376 * It returns MDP related enum/define that match rot+flip*/
377 int getMdpOrient(eTransform rotation);
378 const char* getFormatString(int format);
379
380 template <class T>
memset0(T & t)381 inline void memset0(T& t) { ::memset(&t, 0, sizeof(t)); }
382
swap(T & a,T & b)383 template <class T> inline void swap ( T& a, T& b )
384 {
385 T c(a); a=b; b=c;
386 }
387
max(T a,T b)388 template<typename T> inline T max(T a, T b) { return (a > b) ? a : b; }
389
min(T a,T b)390 template<typename T> inline T min(T a, T b) { return (a < b) ? a : b; }
391
alignup(int value,int a)392 inline int alignup(int value, int a) {
393 //if align = 0, return the value. Else, do alignment.
394 return a ? ((((value - 1) / a) + 1) * a) : value;
395 }
396
aligndown(int value,int a)397 inline int aligndown(int value, int a) {
398 //if align = 0, return the value. Else, do alignment.
399 return a ? ((value) & ~(a-1)) : value;
400 }
401
402 // FIXME that align should replace the upper one.
align(int value,int a)403 inline int align(int value, int a) {
404 //if align = 0, return the value. Else, do alignment.
405 return a ? ((value + (a-1)) & ~(a-1)) : value;
406 }
407
isYuv(uint32_t format)408 inline bool isYuv(uint32_t format) {
409 switch(format){
410 case MDP_Y_CBCR_H2V1:
411 case MDP_Y_CBCR_H2V2:
412 case MDP_Y_CRCB_H2V2:
413 case MDP_Y_CRCB_H1V1:
414 case MDP_Y_CRCB_H2V1:
415 case MDP_Y_CRCB_H2V2_TILE:
416 case MDP_Y_CBCR_H2V2_TILE:
417 case MDP_Y_CR_CB_H2V2:
418 case MDP_Y_CR_CB_GH2V2:
419 case MDP_Y_CBCR_H2V2_VENUS:
420 case MDP_YCBYCR_H2V1:
421 case MDP_YCRYCB_H2V1:
422 return true;
423 default:
424 return false;
425 }
426 return false;
427 }
428
isRgb(uint32_t format)429 inline bool isRgb(uint32_t format) {
430 switch(format) {
431 case MDP_RGBA_8888:
432 case MDP_BGRA_8888:
433 case MDP_RGBX_8888:
434 case MDP_RGB_565:
435 return true;
436 default:
437 return false;
438 }
439 return false;
440 }
441
getFormatString(int format)442 inline const char* getFormatString(int format){
443 #define STR(f) #f;
444 static const char* formats[MDP_IMGTYPE_LIMIT + 1] = {0};
445 formats[MDP_RGB_565] = STR(MDP_RGB_565);
446 formats[MDP_XRGB_8888] = STR(MDP_XRGB_8888);
447 formats[MDP_Y_CBCR_H2V2] = STR(MDP_Y_CBCR_H2V2);
448 formats[MDP_Y_CBCR_H2V2_ADRENO] = STR(MDP_Y_CBCR_H2V2_ADRENO);
449 formats[MDP_ARGB_8888] = STR(MDP_ARGB_8888);
450 formats[MDP_RGB_888] = STR(MDP_RGB_888);
451 formats[MDP_Y_CRCB_H2V2] = STR(MDP_Y_CRCB_H2V2);
452 formats[MDP_YCBYCR_H2V1] = STR(MDP_YCBYCR_H2V1);
453 formats[MDP_YCRYCB_H2V1] = STR(MDP_YCRYCB_H2V1);
454 formats[MDP_CBYCRY_H2V1] = STR(MDP_CBYCRY_H2V1);
455 formats[MDP_Y_CRCB_H2V1] = STR(MDP_Y_CRCB_H2V1);
456 formats[MDP_Y_CBCR_H2V1] = STR(MDP_Y_CBCR_H2V1);
457 formats[MDP_Y_CRCB_H1V2] = STR(MDP_Y_CRCB_H1V2);
458 formats[MDP_Y_CBCR_H1V2] = STR(MDP_Y_CBCR_H1V2);
459 formats[MDP_RGBA_8888] = STR(MDP_RGBA_8888);
460 formats[MDP_BGRA_8888] = STR(MDP_BGRA_8888);
461 formats[MDP_RGBX_8888] = STR(MDP_RGBX_8888);
462 formats[MDP_Y_CRCB_H2V2_TILE] = STR(MDP_Y_CRCB_H2V2_TILE);
463 formats[MDP_Y_CBCR_H2V2_TILE] = STR(MDP_Y_CBCR_H2V2_TILE);
464 formats[MDP_Y_CR_CB_H2V2] = STR(MDP_Y_CR_CB_H2V2);
465 formats[MDP_Y_CR_CB_GH2V2] = STR(MDP_Y_CR_CB_GH2V2);
466 formats[MDP_Y_CB_CR_H2V2] = STR(MDP_Y_CB_CR_H2V2);
467 formats[MDP_Y_CRCB_H1V1] = STR(MDP_Y_CRCB_H1V1);
468 formats[MDP_Y_CBCR_H1V1] = STR(MDP_Y_CBCR_H1V1);
469 formats[MDP_YCRCB_H1V1] = STR(MDP_YCRCB_H1V1);
470 formats[MDP_YCBCR_H1V1] = STR(MDP_YCBCR_H1V1);
471 formats[MDP_BGR_565] = STR(MDP_BGR_565);
472 formats[MDP_BGR_888] = STR(MDP_BGR_888);
473 formats[MDP_Y_CBCR_H2V2_VENUS] = STR(MDP_Y_CBCR_H2V2_VENUS);
474 formats[MDP_BGRX_8888] = STR(MDP_BGRX_8888);
475 formats[MDP_RGBA_8888_TILE] = STR(MDP_RGBA_8888_TILE);
476 formats[MDP_ARGB_8888_TILE] = STR(MDP_ARGB_8888_TILE);
477 formats[MDP_ABGR_8888_TILE] = STR(MDP_ABGR_8888_TILE);
478 formats[MDP_BGRA_8888_TILE] = STR(MDP_BGRA_8888_TILE);
479 formats[MDP_RGBX_8888_TILE] = STR(MDP_RGBX_8888_TILE);
480 formats[MDP_XRGB_8888_TILE] = STR(MDP_XRGB_8888_TILE);
481 formats[MDP_XBGR_8888_TILE] = STR(MDP_XBGR_8888_TILE);
482 formats[MDP_BGRX_8888_TILE] = STR(MDP_BGRX_8888_TILE);
483 formats[MDP_RGB_565_TILE] = STR(MDP_RGB_565_TILE);
484 formats[MDP_IMGTYPE_LIMIT] = STR(MDP_IMGTYPE_LIMIT);
485
486 if(format < 0 || format >= MDP_IMGTYPE_LIMIT) {
487 ALOGE("%s wrong fmt %d", __FUNCTION__, format);
488 return "Unsupported format";
489 }
490 if(formats[format] == 0) {
491 ALOGE("%s: table missing format %d from header", __FUNCTION__, format);
492 return "";
493 }
494 return formats[format];
495 }
496
dump()497 inline void Whf::dump() const {
498 ALOGE("== Dump WHF w=%d h=%d f=%d s=%d start/end ==",
499 w, h, format, size);
500 }
501
dump()502 inline void Dim::dump() const {
503 ALOGE("== Dump Dim x=%d y=%d w=%d h=%d start/end ==", x, y, w, h);
504 }
505
506 template <class Type>
swapWidthHeight(Type & width,Type & height)507 void swapWidthHeight(Type& width, Type& height) {
508 Type tmp = width;
509 width = height;
510 height = tmp;
511 }
512
dump(const char * const s)513 inline void ScreenInfo::dump(const char* const s) const {
514 ALOGE("== Dump %s ScreenInfo w=%d h=%d"
515 " bpp=%d stride=%d start/end ==",
516 s, mFBWidth, mFBHeight, mFBbpp, mFBystride);
517 }
518
openDev(OvFD & fd,int fbnum,const char * const devpath,int flags)519 inline bool openDev(OvFD& fd, int fbnum,
520 const char* const devpath, int flags) {
521 return overlay::open(fd, fbnum, devpath, flags);
522 }
523
524 template <class T>
even_ceil(T & value)525 inline void even_ceil(T& value) {
526 if(value & 1)
527 value++;
528 }
529
530 template <class T>
even_floor(T & value)531 inline void even_floor(T& value) {
532 if(value & 1)
533 value--;
534 }
535
536 /* Prerotation adjusts crop co-ordinates to the new transformed values within
537 * destination buffer. This is necessary only when the entire buffer is rotated
538 * irrespective of crop (A-family). If only the crop portion of the buffer is
539 * rotated into a destination buffer matching the size of crop, we don't need to
540 * use this helper (B-family).
541 * @Deprecated as of now, retained for the case where a full buffer needs
542 * transform and also as a reference.
543 */
544 void preRotateSource(const eTransform& tr, Whf& whf, Dim& srcCrop);
545 void getDump(char *buf, size_t len, const char *prefix, const mdp_overlay& ov);
546 void getDump(char *buf, size_t len, const char *prefix, const msmfb_img& ov);
547 void getDump(char *buf, size_t len, const char *prefix, const mdp_rect& ov);
548 void getDump(char *buf, size_t len, const char *prefix,
549 const msmfb_overlay_data& ov);
550 void getDump(char *buf, size_t len, const char *prefix, const msmfb_data& ov);
551 void getDump(char *buf, size_t len, const char *prefix,
552 const msm_rotator_img_info& ov);
553 void getDump(char *buf, size_t len, const char *prefix,
554 const msm_rotator_data_info& ov);
555
556 } // namespace utils ends
557
558 //--------------------Class Res stuff (namespace overlay only) -----------
559
560 class Res {
561 public:
562 // /dev/graphics/fb%u
563 static const char* const fbPath;
564 // /dev/msm_rotator
565 static const char* const rotPath;
566 };
567
568
569 //--------------------Class OvFD stuff (namespace overlay only) -----------
570
571 /*
572 * Holds one FD
573 * Dtor will NOT close the underlying FD.
574 * That enables us to copy that object around
575 * */
576 class OvFD {
577 public:
578 /* Ctor */
579 explicit OvFD();
580
581 /* dtor will NOT close the underlying FD */
582 ~OvFD();
583
584 /* Open fd using the path given by dev.
585 * return false in failure */
586 bool open(const char* const dev,
587 int flags = O_RDWR);
588
589 /* populate path */
590 void setPath(const char* const dev);
591
592 /* Close fd if we have a valid fd. */
593 bool close();
594
595 /* returns underlying fd.*/
596 int getFD() const;
597
598 /* returns true if fd is valid */
599 bool valid() const;
600
601 /* like operator= */
602 void copy(int fd);
603
604 /* dump the state of the instance */
605 void dump() const;
606 private:
607 /* helper enum for determine valid/invalid fd */
608 enum { INVAL = -1 };
609
610 /* actual os fd */
611 int mFD;
612
613 /* path, for debugging */
614 char mPath[utils::MAX_PATH_LEN];
615 };
616
617 //-------------------Inlines--------------------------
618
open(OvFD & fd,uint32_t fbnum,const char * const dev,int flags)619 inline bool open(OvFD& fd, uint32_t fbnum, const char* const dev, int flags)
620 {
621 char dev_name[64] = {0};
622 snprintf(dev_name, sizeof(dev_name), dev, fbnum);
623 return fd.open(dev_name, flags);
624 }
625
OvFD()626 inline OvFD::OvFD() : mFD (INVAL) {
627 mPath[0] = 0;
628 }
629
~OvFD()630 inline OvFD::~OvFD() {
631 //no op since copy() can be used to share fd, in 3d cases.
632 }
633
open(const char * const dev,int flags)634 inline bool OvFD::open(const char* const dev, int flags)
635 {
636 mFD = ::open(dev, flags, 0);
637 if (mFD < 0) {
638 // FIXME errno, strerror in bionic?
639 ALOGE("Cant open device %s err=%d", dev, errno);
640 return false;
641 }
642 setPath(dev);
643 return true;
644 }
645
setPath(const char * const dev)646 inline void OvFD::setPath(const char* const dev)
647 {
648 ::strlcpy(mPath, dev, sizeof(mPath));
649 }
650
close()651 inline bool OvFD::close()
652 {
653 int ret = 0;
654 if(valid()) {
655 ret = ::close(mFD);
656 mFD = INVAL;
657 }
658 return (ret == 0);
659 }
660
valid()661 inline bool OvFD::valid() const
662 {
663 return (mFD != INVAL);
664 }
665
getFD()666 inline int OvFD::getFD() const { return mFD; }
667
copy(int fd)668 inline void OvFD::copy(int fd) {
669 mFD = fd;
670 }
671
dump()672 inline void OvFD::dump() const
673 {
674 ALOGE("== Dump OvFD fd=%d path=%s start/end ==",
675 mFD, mPath);
676 }
677
678 //--------------- class OvFD stuff ends ---------------------
679
680 } // overlay
681
682
683 #endif // OVERLAY_UTILS_H
684