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/* GStreamer Intel MSDK plugin
* Copyright (c) 2016, Oblong Industries, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* 3. Neither the name of the copyright holder nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/* TODO:
* - discover dri_path instead of having it hardcoded
*/
#include <fcntl.h>
#include <unistd.h>
#include <va/va_drm.h>
#include "msdk.h"
GST_DEBUG_CATEGORY_EXTERN (gst_msdkenc_debug);
#define GST_CAT_DEFAULT gst_msdkenc_debug
struct _MsdkContext
{
mfxSession session;
gint fd;
VADisplay dpy;
};
static gboolean
msdk_use_vaapi_on_context (MsdkContext * context)
{
gint fd;
gint maj_ver, min_ver;
VADisplay va_dpy = NULL;
VAStatus va_status;
mfxStatus status;
/* maybe /dev/dri/renderD128 */
static const gchar *dri_path = "/dev/dri/card0";
fd = open (dri_path, O_RDWR);
if (fd < 0) {
GST_ERROR ("Couldn't open %s", dri_path);
return FALSE;
}
va_dpy = vaGetDisplayDRM (fd);
if (!va_dpy) {
GST_ERROR ("Couldn't get a VA DRM display");
goto failed;
}
va_status = vaInitialize (va_dpy, &maj_ver, &min_ver);
if (va_status != VA_STATUS_SUCCESS) {
GST_ERROR ("Couldn't initialize VA DRM display");
goto failed;
}
status = MFXVideoCORE_SetHandle (context->session, MFX_HANDLE_VA_DISPLAY,
(mfxHDL) va_dpy);
if (status != MFX_ERR_NONE) {
GST_ERROR ("Setting VAAPI handle failed (%s)",
msdk_status_to_string (status));
goto failed;
}
context->fd = fd;
context->dpy = va_dpy;
return TRUE;
failed:
if (va_dpy)
vaTerminate (va_dpy);
close (fd);
return FALSE;
}
MsdkContext *
msdk_open_context (gboolean hardware)
{
MsdkContext *context = g_slice_new0 (MsdkContext);
context->fd = -1;
context->session = msdk_open_session (hardware);
if (!context->session)
goto failed;
if (hardware) {
if (!msdk_use_vaapi_on_context (context))
goto failed;
}
return context;
failed:
msdk_close_session (context->session);
g_slice_free (MsdkContext, context);
return NULL;
}
void
msdk_close_context (MsdkContext * context)
{
if (!context)
return;
msdk_close_session (context->session);
if (context->dpy)
vaTerminate (context->dpy);
if (context->fd >= 0)
close (context->fd);
g_slice_free (MsdkContext, context);
}
mfxSession
msdk_context_get_session (MsdkContext * context)
{
return context->session;
}
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