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