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  1. /*
  2.  * Copyright © 2008 Red Hat, Inc.
  3.  *
  4.  * Permission is hereby granted, free of charge, to any person obtaining a
  5.  * copy of this software and associated documentation files (the "Soft-
  6.  * ware"), to deal in the Software without restriction, including without
  7.  * limitation the rights to use, copy, modify, merge, publish, distribute,
  8.  * and/or sell copies of the Software, and to permit persons to whom the
  9.  * Software is furnished to do so, provided that the above copyright
  10.  * notice(s) and this permission notice appear in all copies of the Soft-
  11.  * ware and that both the above copyright notice(s) and this permission
  12.  * notice appear in supporting documentation.
  13.  *
  14.  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  15.  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABIL-
  16.  * ITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY
  17.  * RIGHTS. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS INCLUDED IN
  18.  * THIS NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT OR CONSE-
  19.  * QUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
  20.  * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
  21.  * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFOR-
  22.  * MANCE OF THIS SOFTWARE.
  23.  *
  24.  * Except as contained in this notice, the name of a copyright holder shall
  25.  * not be used in advertising or otherwise to promote the sale, use or
  26.  * other dealings in this Software without prior written authorization of
  27.  * the copyright holder.
  28.  *
  29.  * Authors:
  30.  *   Kristian Høgsberg (krh@redhat.com)
  31.  */
  32.  
  33.  
  34. #define NEED_REPLIES
  35. #include <X11/Xlibint.h>
  36. #include <X11/extensions/Xext.h>
  37. #include <X11/extensions/extutil.h>
  38. #include "xf86drm.h"
  39. #include "va_dri2.h"
  40. #include "va_dri2str.h"
  41. #include "va_dri2tokens.h"
  42.  
  43. #ifndef DRI2DriverDRI
  44. #define DRI2DriverDRI 0
  45. #endif
  46.  
  47. static int
  48. VA_DRI2Error(Display *dpy, xError *err, XExtCodes *codes, int *ret_code);
  49.  
  50. static char va_dri2ExtensionName[] = DRI2_NAME;
  51. static XExtensionInfo _va_dri2_info_data;
  52. static XExtensionInfo *va_dri2Info = &_va_dri2_info_data;
  53. static XEXT_GENERATE_CLOSE_DISPLAY (VA_DRI2CloseDisplay, va_dri2Info)
  54. static /* const */ XExtensionHooks va_dri2ExtensionHooks = {
  55.     NULL,                               /* create_gc */
  56.     NULL,                               /* copy_gc */
  57.     NULL,                               /* flush_gc */
  58.     NULL,                               /* free_gc */
  59.     NULL,                               /* create_font */
  60.     NULL,                               /* free_font */
  61.     VA_DRI2CloseDisplay,                /* close_display */
  62.     NULL,                               /* wire_to_event */
  63.     NULL,                               /* event_to_wire */
  64.     VA_DRI2Error,                       /* error */
  65.     NULL,                               /* error_string */
  66. };
  67.  
  68. static XEXT_GENERATE_FIND_DISPLAY (DRI2FindDisplay, va_dri2Info,
  69.                                    va_dri2ExtensionName,
  70.                                    &va_dri2ExtensionHooks,
  71.                                    0, NULL)
  72.  
  73. static int
  74. VA_DRI2Error(Display *dpy, xError *err, XExtCodes *codes, int *ret_code)
  75. {
  76.     /*
  77.      * If the X drawable was destroyed before the VA drawable, the DRI2 drawable
  78.      * will be gone by the time we call VA_DRI2DestroyDrawable(). So, simply
  79.      * ignore BadDrawable errors in that case.
  80.      */
  81.     if (err->majorCode == codes->major_opcode &&
  82.         err->errorCode == BadDrawable &&
  83.         err->minorCode == X_DRI2DestroyDrawable)
  84.         return True;
  85.  
  86.     return False;
  87. }
  88.  
  89. Bool VA_DRI2QueryExtension(Display *dpy, int *eventBase, int *errorBase)
  90. {
  91.     XExtDisplayInfo *info = DRI2FindDisplay(dpy);
  92.  
  93.     if (XextHasExtension(info)) {
  94.         *eventBase = info->codes->first_event;
  95.         *errorBase = info->codes->first_error;
  96.         return True;
  97.     }
  98.  
  99.     return False;
  100. }
  101.  
  102. Bool VA_DRI2QueryVersion(Display *dpy, int *major, int *minor)
  103. {
  104.     XExtDisplayInfo *info = DRI2FindDisplay (dpy);
  105.     xDRI2QueryVersionReply rep;
  106.     xDRI2QueryVersionReq *req;
  107.  
  108.     XextCheckExtension (dpy, info, va_dri2ExtensionName, False);
  109.  
  110.     LockDisplay(dpy);
  111.     GetReq(DRI2QueryVersion, req);
  112.     req->reqType = info->codes->major_opcode;
  113.     req->dri2ReqType = X_DRI2QueryVersion;
  114.     req->majorVersion = DRI2_MAJOR;
  115.     req->minorVersion = DRI2_MINOR;
  116.     if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) {
  117.         UnlockDisplay(dpy);
  118.         SyncHandle();
  119.         return False;
  120.     }
  121.     *major = rep.majorVersion;
  122.     *minor = rep.minorVersion;
  123.     UnlockDisplay(dpy);
  124.     SyncHandle();
  125.  
  126.     return True;
  127. }
  128.  
  129. Bool VA_DRI2Connect(Display *dpy, XID window,
  130.                  char **driverName, char **deviceName)
  131. {
  132.     XExtDisplayInfo *info = DRI2FindDisplay(dpy);
  133.     xDRI2ConnectReply rep;
  134.     xDRI2ConnectReq *req;
  135.  
  136.     XextCheckExtension (dpy, info, va_dri2ExtensionName, False);
  137.  
  138.     LockDisplay(dpy);
  139.     GetReq(DRI2Connect, req);
  140.     req->reqType = info->codes->major_opcode;
  141.     req->dri2ReqType = X_DRI2Connect;
  142.     req->window = window;
  143.     req->driverType = DRI2DriverDRI;
  144.     if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) {
  145.         UnlockDisplay(dpy);
  146.         SyncHandle();
  147.         return False;
  148.     }
  149.  
  150.     if (rep.driverNameLength == 0 && rep.deviceNameLength == 0) {
  151.         UnlockDisplay(dpy);
  152.         SyncHandle();
  153.         return False;
  154.     }
  155.  
  156.     *driverName = Xmalloc(rep.driverNameLength + 1);
  157.     if (*driverName == NULL) {
  158.         _XEatData(dpy,
  159.                   ((rep.driverNameLength + 3) & ~3) +
  160.                   ((rep.deviceNameLength + 3) & ~3));
  161.         UnlockDisplay(dpy);
  162.         SyncHandle();
  163.         return False;
  164.     }
  165.     _XReadPad(dpy, *driverName, rep.driverNameLength);
  166.     (*driverName)[rep.driverNameLength] = '\0';
  167.  
  168.     *deviceName = Xmalloc(rep.deviceNameLength + 1);
  169.     if (*deviceName == NULL) {
  170.         Xfree(*driverName);
  171.         _XEatData(dpy, ((rep.deviceNameLength + 3) & ~3));
  172.         UnlockDisplay(dpy);
  173.         SyncHandle();
  174.         return False;
  175.     }
  176.     _XReadPad(dpy, *deviceName, rep.deviceNameLength);
  177.     (*deviceName)[rep.deviceNameLength] = '\0';
  178.  
  179.     UnlockDisplay(dpy);
  180.     SyncHandle();
  181.  
  182.     return True;
  183. }
  184.  
  185. Bool VA_DRI2Authenticate(Display *dpy, XID window, drm_magic_t magic)
  186. {
  187.     XExtDisplayInfo *info = DRI2FindDisplay(dpy);
  188.     xDRI2AuthenticateReq *req;
  189.     xDRI2AuthenticateReply rep;
  190.  
  191.     XextCheckExtension (dpy, info, va_dri2ExtensionName, False);
  192.  
  193.     LockDisplay(dpy);
  194.     GetReq(DRI2Authenticate, req);
  195.     req->reqType = info->codes->major_opcode;
  196.     req->dri2ReqType = X_DRI2Authenticate;
  197.     req->window = window;
  198.     req->magic = magic;
  199.  
  200.     if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) {
  201.         UnlockDisplay(dpy);
  202.         SyncHandle();
  203.         return False;
  204.     }
  205.  
  206.     UnlockDisplay(dpy);
  207.     SyncHandle();
  208.  
  209.     return rep.authenticated;
  210. }
  211.  
  212. void VA_DRI2CreateDrawable(Display *dpy, XID drawable)
  213. {
  214.     XExtDisplayInfo *info = DRI2FindDisplay(dpy);
  215.     xDRI2CreateDrawableReq *req;
  216.  
  217.     XextSimpleCheckExtension (dpy, info, va_dri2ExtensionName);
  218.  
  219.     LockDisplay(dpy);
  220.     GetReq(DRI2CreateDrawable, req);
  221.     req->reqType = info->codes->major_opcode;
  222.     req->dri2ReqType = X_DRI2CreateDrawable;
  223.     req->drawable = drawable;
  224.     UnlockDisplay(dpy);
  225.     SyncHandle();
  226. }
  227.  
  228. void VA_DRI2DestroyDrawable(Display *dpy, XID drawable)
  229. {
  230.     XExtDisplayInfo *info = DRI2FindDisplay(dpy);
  231.     xDRI2DestroyDrawableReq *req;
  232.  
  233.     XextSimpleCheckExtension (dpy, info, va_dri2ExtensionName);
  234.  
  235.     XSync(dpy, False);
  236.  
  237.     LockDisplay(dpy);
  238.     GetReq(DRI2DestroyDrawable, req);
  239.     req->reqType = info->codes->major_opcode;
  240.     req->dri2ReqType = X_DRI2DestroyDrawable;
  241.     req->drawable = drawable;
  242.     UnlockDisplay(dpy);
  243.     SyncHandle();
  244. }
  245.  
  246. VA_DRI2Buffer *VA_DRI2GetBuffers(Display *dpy, XID drawable,
  247.                            int *width, int *height,
  248.                            unsigned int *attachments, int count,
  249.                            int *outCount)
  250. {
  251.     XExtDisplayInfo *info = DRI2FindDisplay(dpy);
  252.     xDRI2GetBuffersReply rep;
  253.     xDRI2GetBuffersReq *req;
  254.     VA_DRI2Buffer *buffers;
  255.     xDRI2Buffer repBuffer;
  256.     CARD32 *p;
  257.     int i;
  258.  
  259.     XextCheckExtension (dpy, info, va_dri2ExtensionName, False);
  260.  
  261.     LockDisplay(dpy);
  262.     GetReqExtra(DRI2GetBuffers, count * 4, req);
  263.     req->reqType = info->codes->major_opcode;
  264.     req->dri2ReqType = X_DRI2GetBuffers;
  265.     req->drawable = drawable;
  266.     req->count = count;
  267.     p = (CARD32 *) &req[1];
  268.     for (i = 0; i < count; i++)
  269.         p[i] = attachments[i];
  270.  
  271.     if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) {
  272.         UnlockDisplay(dpy);
  273.         SyncHandle();
  274.         return NULL;
  275.     }
  276.  
  277.     *width = rep.width;
  278.     *height = rep.height;
  279.     *outCount = rep.count;
  280.  
  281.     buffers = Xmalloc(rep.count * sizeof buffers[0]);
  282.     if (buffers == NULL) {
  283.         _XEatData(dpy, rep.count * sizeof repBuffer);
  284.         UnlockDisplay(dpy);
  285.         SyncHandle();
  286.         return NULL;
  287.     }
  288.  
  289.     for (i = 0; i < rep.count; i++) {
  290.         _XReadPad(dpy, (char *) &repBuffer, sizeof repBuffer);
  291.         buffers[i].attachment = repBuffer.attachment;
  292.         buffers[i].name = repBuffer.name;
  293.         buffers[i].pitch = repBuffer.pitch;
  294.         buffers[i].cpp = repBuffer.cpp;
  295.         buffers[i].flags = repBuffer.flags;
  296.     }
  297.  
  298.     UnlockDisplay(dpy);
  299.     SyncHandle();
  300.  
  301.     return buffers;
  302. }
  303.  
  304. void VA_DRI2CopyRegion(Display *dpy, XID drawable, XserverRegion region,
  305.                     CARD32 dest, CARD32 src)
  306. {
  307.     XExtDisplayInfo *info = DRI2FindDisplay(dpy);
  308.     xDRI2CopyRegionReq *req;
  309.     xDRI2CopyRegionReply rep;
  310.  
  311.     XextSimpleCheckExtension (dpy, info, va_dri2ExtensionName);
  312.  
  313.     LockDisplay(dpy);
  314.     GetReq(DRI2CopyRegion, req);
  315.     req->reqType = info->codes->major_opcode;
  316.     req->dri2ReqType = X_DRI2CopyRegion;
  317.     req->drawable = drawable;
  318.     req->region = region;
  319.     req->dest = dest;
  320.     req->src = src;
  321.  
  322.     _XReply(dpy, (xReply *)&rep, 0, xFalse);
  323.  
  324.     UnlockDisplay(dpy);
  325.     SyncHandle();
  326. }
  327.  
  328. static void
  329. load_swap_req(xDRI2SwapBuffersReq *req, CARD64 target, CARD64 divisor,
  330.               CARD64 remainder)
  331. {
  332.     req->target_msc_hi = target >> 32;
  333.     req->target_msc_lo = target & 0xffffffff;
  334.     req->divisor_hi = divisor >> 32;
  335.     req->divisor_lo = divisor & 0xffffffff;
  336.     req->remainder_hi = remainder >> 32;
  337.     req->remainder_lo = remainder & 0xffffffff;
  338. }
  339.  
  340. static CARD64
  341. vals_to_card64(CARD32 lo, CARD32 hi)
  342. {
  343.     return (CARD64)hi << 32 | lo;
  344. }
  345.  
  346. void VA_DRI2SwapBuffers(Display *dpy, XID drawable, CARD64 target_msc,
  347.                         CARD64 divisor, CARD64 remainder, CARD64 *count)
  348. {
  349.     XExtDisplayInfo *info = DRI2FindDisplay(dpy);
  350.     xDRI2SwapBuffersReq *req;
  351.     xDRI2SwapBuffersReply rep;
  352.  
  353.     XextSimpleCheckExtension (dpy, info, va_dri2ExtensionName);
  354.  
  355.     LockDisplay(dpy);
  356.     GetReq(DRI2SwapBuffers, req);
  357.     req->reqType = info->codes->major_opcode;
  358.     req->dri2ReqType = X_DRI2SwapBuffers;
  359.     req->drawable = drawable;
  360.     load_swap_req(req, target_msc, divisor, remainder);
  361.  
  362.     _XReply(dpy, (xReply *)&rep, 0, xFalse);
  363.  
  364.     *count = vals_to_card64(rep.swap_lo, rep.swap_hi);
  365.  
  366.     UnlockDisplay(dpy);
  367.     SyncHandle();
  368. }
  369.