multimedia/mplayer: Fix build with llvm15

Details:
- clang15 performs stricter checks for pointer conversions, some
  questionable conversions graduated from warnings to errors
- Fixes multimedia/mencoder builds as well

MFH:		2023Q1

multimedia/mplayer/files/patch-libmpcodecs_ve__lavc.c

@@ -0,0 +1,11 @@
+--- libmpcodecs/ve_lavc.c.orig	2022-08-30 20:40:03 UTC
++++ libmpcodecs/ve_lavc.c
+@@ -441,7 +441,7 @@ static int config(struct vf_instance *vf,
+ 	    mp_msg(MSGT_MENCODER,MSGL_ERR,"error parsing vrc_q\n");
+             return 0;
+         }
+-        lavc_venc_context->rc_override=
++        lavc_venc_context->rc_override=(struct RcOverride *)
+             av_reallocp_array(lavc_venc_context->rc_override, i+1, sizeof(*lavc_venc_context->rc_override));
+         lavc_venc_context->rc_override[i].start_frame= start;
+         lavc_venc_context->rc_override[i].end_frame  = end;

multimedia/mplayer/files/patch-loader_ext.c

@@ -0,0 +1,11 @@
+--- loader/ext.c.orig	2021-01-23 18:22:09 UTC
++++ loader/ext.c
+@@ -444,7 +444,7 @@ LPVOID WINAPI VirtualAlloc(LPVOID address, DWORD size,
+
+     if (type&MEM_RESERVE && (unsigned)address&0xffff) {
+ 	size += (unsigned)address&0xffff;
+-	address = (unsigned)address&~0xffff;
++	address = (void*)((unsigned)address&~0xffff);
+     }
+     pgsz = sysconf(_SC_PAGESIZE);
+     if (type&MEM_COMMIT && (unsigned)address%pgsz) {

multimedia/mplayer/files/patch-loader_module.c

@@ -0,0 +1,20 @@
+--- loader/module.c.orig	2011-07-30 20:44:37 UTC
++++ loader/module.c
+@@ -844,7 +844,7 @@ static int report_func(void *stack_base, int stack_siz
+   // memory management:
+   case 0x150011: //NewPtrClear
+   case 0x150012: //NewPtrSysClear
+-      reg->eax = malloc(((uint32_t *)stack_base)[1]);
++      reg->eax = (uint32_t)malloc(((uint32_t *)stack_base)[1]);
+       memset((void *)reg->eax,0,((uint32_t *)stack_base)[1]);
+ #ifdef DEBUG_QTX_API
+       printf("%*sLEAVE(%d): EMULATED! 0x%X\n",ret_i*2,"",ret_i, reg->eax);
+@@ -852,7 +852,7 @@ static int report_func(void *stack_base, int stack_siz
+       return 1;
+   case 0x15000F: //NewPtr
+   case 0x150010: //NewPtrSys
+-      reg->eax = malloc(((uint32_t *)stack_base)[1]);
++      reg->eax = (uint32_t)malloc(((uint32_t *)stack_base)[1]);
+ #ifdef DEBUG_QTX_API
+       printf("%*sLEAVE(%d): EMULATED! 0x%X\n",ret_i*2,"",ret_i, reg->eax);
+ #endif

multimedia/mplayer/files/patch-loader_win32.c

@@ -0,0 +1,66 @@
+--- loader/win32.c.orig	2021-01-23 18:22:09 UTC
++++ loader/win32.c
+@@ -1504,7 +1504,7 @@ static void WINAPI expDeleteCriticalSection(CRITICAL_S
+ static int WINAPI expGetCurrentThreadId(void)
+ {
+     dbgprintf("GetCurrentThreadId() => %d\n", pthread_self());
+-    return pthread_self();
++    return (int)pthread_self();
+ }
+ static int WINAPI expGetCurrentProcess(void)
+ {
+@@ -2019,15 +2019,15 @@ static DWORD WINAPI expSignalObjectAndWait(HANDLE hObj
+         expSetEvent(mlist);
+         break;
+     case 1:  // Semaphore
+-        expReleaseSemaphore(mlist, 1, NULL);
++        expReleaseSemaphore((long)mlist, 1, NULL);
+         break;
+     case 2:  // Mutex
+-        expReleaseMutex(mlist);
++        expReleaseMutex((long)mlist);
+         break;
+     default:
+         dbgprintf("Signalling unknown object type %d!\n", hObjectToSignal);
+     }
+-    return expWaitForSingleObject(hObjectToWaitOn, dwMilliseconds);
++    return (DWORD)expWaitForSingleObject((void*)hObjectToWaitOn, dwMilliseconds);
+ }
+
+ static long WINAPI expRegOpenKeyExA(long key, const char* subkey, long reserved, long access, int* newkey)
+@@ -2751,7 +2751,7 @@ static int WINAPI expEnumDisplayMonitors(void *dc, REC
+ {
+     dbgprintf("EnumDisplayMonitors(0x%x, 0x%x, 0x%x, 0x%x) => ?\n",
+ 	dc, r, callback_proc, callback_param);
+-    return callback_proc(0, dc, r, callback_param);
++    return callback_proc(0, (HDC)dc, r, (LPARAM)callback_param);
+ }
+
+ #if 0
+@@ -2851,14 +2851,14 @@ static int WINAPI expEnumWindows(int (*callback_func)(
+ {
+     int i, i2;
+     dbgprintf("EnumWindows(0x%x, 0x%x) => 1\n", callback_func, callback_param);
+-    i = callback_func(0, callback_param);
+-    i2 = callback_func(1, callback_param);
++    i = callback_func(0, (LPARAM)callback_param);
++    i2 = callback_func(1, (LPARAM)callback_param);
+     return i && i2;
+ }
+
+ static int WINAPI expGetWindowThreadProcessId(HWND win, int *pid_data)
+ {
+-    int tid = pthread_self();
++    int tid = (int)pthread_self();
+     dbgprintf("GetWindowThreadProcessId(0x%x, 0x%x) => %d\n",
+ 	win, pid_data, tid);
+     if (pid_data)
+@@ -4940,7 +4940,7 @@ static HPALETTE WINAPI expCreatePalette(CONST LOGPALET
+     dbgprintf("CreatePalette(%x) => NULL\n", lpgpl);
+
+     i = sizeof(LOGPALETTE)+((lpgpl->palNumEntries-1)*sizeof(PALETTEENTRY));
+-    test = malloc(i);
++    test = (HPALETTE)malloc(i);
+     memcpy((void *)test, lpgpl, i);
+
+     return test;