mirror of
https://github.com/gnif/LookingGlass.git
synced 2024-11-25 14:57:20 +00:00
[obs] added RGBA cursor support
This commit is contained in:
Geoffrey McRae
parent
66df00cee2
commit
e2f6621de9
198
obs/lg.c
198
obs/lg.c
@ -2,6 +2,7 @@
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#include <obs/obs-module.h>
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#include <obs/util/threading.h>
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#include <obs/graphics/matrix4.h>
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#include <common/ivshmem.h>
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#include <common/KVMFR.h>
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@ -10,6 +11,7 @@
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#include <stdio.h>
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#include <unistd.h>
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#include <stdatomic.h>
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typedef enum
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{
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@ -30,13 +32,22 @@ typedef struct
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FrameType type;
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struct IVSHMEM shmDev;
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PLGMPClient lgmp;
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PLGMPClientQueue frameQueue;
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PLGMPClientQueue frameQueue, pointerQueue;
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gs_texture_t * texture;
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uint8_t * texData;
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uint32_t linesize;
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pthread_t frameThread;
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pthread_t frameThread, pointerThread;
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os_sem_t * frameSem;
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gs_texture_t * cursorTex;
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bool cursorVisible;
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volatile KVMFRCursor cursor;
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os_sem_t * cursorSem;
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atomic_uint cursorVer;
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unsigned int cursorCurVer;
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uint32_t cursorSize;
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void * cursorData;
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}
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LGPlugin;
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@ -51,8 +62,9 @@ static void * lgCreate(obs_data_t * settings, obs_source_t * context)
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{
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LGPlugin * this = bzalloc(sizeof(LGPlugin));
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this->context = context;
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os_sem_init(&this->frameSem, 0);
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os_sem_init (&this->frameSem , 0);
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os_sem_init (&this->cursorSem, 1);
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atomic_store(&this->cursorVer, 0);
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lgUpdate(this, settings);
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return this;
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}
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@ -70,7 +82,8 @@ static void deinit(LGPlugin * this)
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case STATE_RUNNING:
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case STATE_STOPPING:
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this->state = STATE_STOPPING;
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pthread_join(this->frameThread, NULL);
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pthread_join(this->frameThread , NULL);
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pthread_join(this->pointerThread, NULL);
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this->state = STATE_STOPPED;
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/* fallthrough */
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@ -98,6 +111,15 @@ static void deinit(LGPlugin * this)
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this->texture = NULL;
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}
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if (this->cursorTex)
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{
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obs_enter_graphics();
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gs_texture_destroy(this->cursorTex);
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gs_texture_unmap(this->cursorTex);
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obs_leave_graphics();
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this->cursorTex = NULL;
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}
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this->state = STATE_STOPPED;
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}
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@ -105,7 +127,8 @@ static void lgDestroy(void * data)
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{
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LGPlugin * this = (LGPlugin *)data;
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deinit(this);
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os_sem_destroy(this->frameSem);
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os_sem_destroy(this->frameSem );
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os_sem_destroy(this->cursorSem);
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bfree(this);
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}
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@ -159,6 +182,99 @@ static void * frameThread(void * data)
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return NULL;
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}
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static void * pointerThread(void * data)
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{
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LGPlugin * this = (LGPlugin *)data;
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if (lgmpClientSubscribe(this->lgmp, LGMP_Q_POINTER, &this->pointerQueue) != LGMP_OK)
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{
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this->state = STATE_STOPPING;
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return NULL;
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}
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while(this->state == STATE_RUNNING)
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{
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LGMP_STATUS status;
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LGMPMessage msg;
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if ((status = lgmpClientProcess(this->pointerQueue, &msg)) != LGMP_OK)
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{
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if (status != LGMP_ERR_QUEUE_EMPTY)
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{
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printf("lgmpClientProcess: %s\n", lgmpStatusString(status));
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break;
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}
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usleep(1000);
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continue;
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}
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KVMFRCursor * cursor = (KVMFRCursor *)msg.mem;
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this->cursorVisible =
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msg.udata & CURSOR_FLAG_VISIBLE;
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if (msg.udata & CURSOR_FLAG_SHAPE)
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{
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os_sem_wait(this->cursorSem);
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const uint8_t * data = (const uint8_t *)(cursor + 1);
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unsigned int dataSize = 0;
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this->cursor.type = cursor->type;
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switch(cursor->type)
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{
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case CURSOR_TYPE_MASKED_COLOR:
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// fall through
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case CURSOR_TYPE_COLOR:
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dataSize = cursor->height * cursor->pitch;
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break;
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case CURSOR_TYPE_MONOCHROME:
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dataSize = cursor->width * cursor->height;
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break;
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default:
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printf("Invalid cursor type\n");
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break;
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}
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if (this->cursorSize < dataSize)
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{
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free(this->cursorData);
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this->cursorSize = dataSize;
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this->cursorData = bmalloc(dataSize);
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}
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memcpy(this->cursorData, data, dataSize);
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this->cursor.width = cursor->width;
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this->cursor.height = cursor->height;
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this->cursor.hx = cursor->hx;
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this->cursor.hy = cursor->hy;
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atomic_fetch_add_explicit(&this->cursorVer, 1, memory_order_relaxed);
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os_sem_post(this->cursorSem);
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}
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if (msg.udata & CURSOR_FLAG_POSITION)
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{
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this->cursor.x = cursor->x;
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this->cursor.y = cursor->y;
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}
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lgmpClientMessageDone(this->pointerQueue);
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}
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lgmpClientUnsubscribe(&this->pointerQueue);
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bfree(this->cursorData);
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this->cursorData = NULL;
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this->cursorSize = 0;
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this->state = STATE_STOPPING;
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return NULL;
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}
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static void lgUpdate(void * data, obs_data_t * settings)
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{
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LGPlugin * this = (LGPlugin *)data;
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@ -196,6 +312,8 @@ static void lgUpdate(void * data, obs_data_t * settings)
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this->state = STATE_STARTING;
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pthread_create(&this->frameThread, NULL, frameThread, this);
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pthread_setname_np(this->frameThread, "LGFrameThread");
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pthread_create(&this->pointerThread, NULL, pointerThread, this);
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pthread_setname_np(this->pointerThread, "LGPointerThread");
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}
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static void lgVideoTick(void * data, float seconds)
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@ -215,6 +333,43 @@ static void lgVideoTick(void * data, float seconds)
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return;
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}
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/* update the cursor texture */
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unsigned int cursorVer = atomic_load(&this->cursorVer);
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if (cursorVer != this->cursorCurVer)
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{
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os_sem_wait(this->cursorSem);
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obs_enter_graphics();
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if (this->cursorTex)
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{
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gs_texture_destroy(this->cursorTex);
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this->cursorTex = NULL;
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}
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switch(this->cursor.type)
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{
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case CURSOR_TYPE_COLOR:
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this->cursorTex =
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gs_texture_create(
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this->cursor.width,
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this->cursor.height,
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GS_BGRA,
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1,
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(const uint8_t**)&this->cursorData,
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GS_DYNAMIC);
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break;
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default:
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printf("only rgb cursors supported at this time\n");
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break;
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}
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obs_leave_graphics();
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this->cursorCurVer = cursorVer;
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os_sem_post(this->cursorSem);
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}
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if ((status = lgmpClientAdvanceToLast(this->frameQueue)) != LGMP_OK)
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{
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if (status != LGMP_ERR_QUEUE_EMPTY)
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@ -258,8 +413,8 @@ static void lgVideoTick(void * data, float seconds)
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{
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gs_texture_unmap(this->texture);
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gs_texture_destroy(this->texture);
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this->texture = NULL;
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}
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this->texture = NULL;
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enum gs_color_format format;
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switch(this->type)
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@ -316,12 +471,39 @@ static void lgVideoRender(void * data, gs_effect_t * effect)
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if (!this->texture)
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return;
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struct matrix4 m4;
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gs_matrix_get(&m4);
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struct gs_rect r =
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{
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.x = m4.t.x,
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.y = m4.t.y,
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.cx = (double)this->width * m4.x.x,
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.cy = (double)this->height * m4.y.y
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};
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gs_set_scissor_rect(&r);
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effect = obs_get_base_effect(OBS_EFFECT_OPAQUE);
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gs_eparam_t *image = gs_effect_get_param_by_name(effect, "image");
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gs_effect_set_texture(image, this->texture);
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while (gs_effect_loop(effect, "Draw")) {
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while (gs_effect_loop(effect, "Draw"))
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gs_draw_sprite(this->texture, 0, 0, 0);
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if (this->cursorVisible && this->cursorTex)
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{
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effect = obs_get_base_effect(OBS_EFFECT_DEFAULT);
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image = gs_effect_get_param_by_name(effect, "image");
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gs_effect_set_texture(image, this->cursorTex);
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while (gs_effect_loop(effect, "Draw"))
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{
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gs_matrix_push();
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gs_matrix_translate3f(this->cursor.x, this->cursor.y, 0.0f);
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gs_draw_sprite(this->cursorTex, 0, 0, 0);
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gs_matrix_pop();
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}
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}
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gs_set_scissor_rect(NULL);
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}
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static uint32_t lgGetWidth(void * data)
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