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[c-host] linux: add getFrame support to xcb capture

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This commit is contained in:
Geoffrey McRae
2019-03-02 20:33:45 +11:00
parent 61108ba760
commit 67c7c79dae
1 changed files with 52 additions and 12 deletions
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64
c-host/linux/capture/xcb.c
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@@ -19,6 +19,7 @@ Place, Suite 330, Boston, MA 02111-1307 USA
#include "capture/interface.h"
#include "debug.h"
#include <string.h>
#include <assert.h>
#include <stdlib.h>
#include <inttypes.h>
@@ -39,6 +40,7 @@ struct xcb
unsigned int width;
unsigned int height;
bool hasFrame;
xcb_shm_get_image_cookie_t imgC;
xcb_xfixes_get_cursor_image_cookie_t curC;
};
@@ -157,21 +159,58 @@ static CaptureResult xcb_capture(bool * hasFrameUpdate, bool * hasPointerUpdate)
assert(this);
assert(this->initialized);
this->imgC = xcb_shm_get_image_unchecked(
this->xcb,
this->xcbScreen->root,
0, 0,
this->width,
this->height,
~0,
XCB_IMAGE_FORMAT_Z_PIXMAP,
this->seg,
0);
if (!this->hasFrame)
{
this->imgC = xcb_shm_get_image_unchecked(
this->xcb,
this->xcbScreen->root,
0, 0,
this->width,
this->height,
~0,
XCB_IMAGE_FORMAT_Z_PIXMAP,
this->seg,
0);
*hasFrameUpdate = true;
this->hasFrame = true;
}
*hasFrameUpdate = true;
return CAPTURE_RESULT_OK;
}
static bool xcb_getFrame(CaptureFrame * frame)
{
assert(this);
assert(this->initialized);
assert(frame);
assert(frame->data);
if (!this->hasFrame)
{
DEBUG_ERROR("No frame to get");
return false;
}
xcb_shm_get_image_reply_t * img;
img = xcb_shm_get_image_reply(this->xcb, this->imgC, NULL);
if (!img)
{
DEBUG_ERROR("Failed to get image reply");
return false;
}
frame->width = this->width;
frame->height = this->height;
frame->pitch = this->width * 4;
frame->format = CAPTURE_FMT_BGRA;
memcpy(frame->data, this->data, this->width * this->height * 4);
free(img);
this->hasFrame = false;
return true;
}
struct CaptureInterface Capture_XCB =
{
.getName = xcb_getName,
@@ -180,5 +219,6 @@ struct CaptureInterface Capture_XCB =
.deinit = xcb_deinit,
.free = xcb_free,
.getMaxFrameSize = xcb_getMaxFrameSize,
.capture = xcb_capture
.capture = xcb_capture,
.getFrame = xcb_getFrame
};