1 files changed, 112 insertions, 0 deletions
diff --git a/video/decode/vdpau.c b/video/decode/vdpau.c
new file mode 100644
index 0000000000..dfa5164ae9
--- /dev/null
+++ b/video/decode/vdpau.c
@@ -0,0 +1,112 @@
+/*
+ * This file is part of mpv.
+ *
+ * mpv is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * mpv is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with mpv.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <libavcodec/avcodec.h>
+#include <libavcodec/vdpau.h>
+#include <libavutil/common.h>
+
+#include "lavc.h"
+#include "common/common.h"
+#include "video/vdpau.h"
+#include "video/hwdec.h"
+
+struct priv {
+    struct mp_log              *log;
+    struct mp_vdpau_ctx        *mpvdp;
+    uint64_t                    preemption_counter;
+};
+
+static int init_decoder(struct lavc_ctx *ctx, int fmt, int w, int h)
+{
+    struct priv *p = ctx->hwdec_priv;
+
+    // During preemption, pretend everything is ok.
+    if (mp_vdpau_handle_preemption(p->mpvdp, &p->preemption_counter) < 0)
+        return 0;
+
+    return av_vdpau_bind_context(ctx->avctx, p->mpvdp->vdp_device,
+                                 p->mpvdp->get_proc_address,
+                                 AV_HWACCEL_FLAG_IGNORE_LEVEL |
+                                 AV_HWACCEL_FLAG_ALLOW_HIGH_DEPTH);
+}
+
+static struct mp_image *allocate_image(struct lavc_ctx *ctx, int fmt,
+                                       int w, int h)
+{
+    struct priv *p = ctx->hwdec_priv;
+
+    // In case of preemption, reinit the decoder. Setting hwdec_request_reinit
+    // will cause init_decoder() to be called again.
+    if (mp_vdpau_handle_preemption(p->mpvdp, &p->preemption_counter) == 0)
+        ctx->hwdec_request_reinit = true;
+
+    VdpChromaType chroma = 0;
+    uint32_t s_w = w, s_h = h;
+    if (av_vdpau_get_surface_parameters(ctx->avctx, &chroma, &s_w, &s_h) < 0)
+        return NULL;
+
+    return mp_vdpau_get_video_surface(p->mpvdp, chroma, s_w, s_h);
+}
+
+static void uninit(struct lavc_ctx *ctx)
+{
+    struct priv *p = ctx->hwdec_priv;
+
+    talloc_free(p);
+
+    av_freep(&ctx->avctx->hwaccel_context);
+}
+
+static int init(struct lavc_ctx *ctx)
+{
+    struct priv *p = talloc_ptrtype(NULL, p);
+    *p = (struct priv) {
+        .log = mp_log_new(p, ctx->log, "vdpau"),
+        .mpvdp = ctx->hwdec_info->hwctx->vdpau_ctx,
+    };
+    ctx->hwdec_priv = p;
+
+    if (mp_vdpau_handle_preemption(p->mpvdp, &p->preemption_counter) < 1)
+        goto error;
+
+    return 0;
+
+error:
+    uninit(ctx);
+    return -1;
+}
+
+static int probe(struct vd_lavc_hwdec *hwdec, struct mp_hwdec_info *info,
+                 const char *decoder)
+{
+    hwdec_request_api(info, "vdpau");
+    if (!info || !info->hwctx || !info->hwctx->vdpau_ctx)
+        return HWDEC_ERR_NO_CTX;
+    if (mp_vdpau_guess_if_emulated(info->hwctx->vdpau_ctx))
+        return HWDEC_ERR_EMULATED;
+    return 0;
+}
+
+const struct vd_lavc_hwdec mp_vd_lavc_vdpau = {
+    .type = HWDEC_VDPAU,
+    .image_format = IMGFMT_VDPAU,
+    .probe = probe,
+    .init = init,
+    .uninit = uninit,
+    .init_decoder = init_decoder,
+    .allocate_image = allocate_image,
+};