1 files changed, 189 insertions, 0 deletions
diff --git a/video/decode/hw_vdpau.c b/video/decode/hw_vdpau.c
new file mode 100644
index 0000000000..a6b6210804
--- /dev/null
+++ b/video/decode/hw_vdpau.c
@@ -0,0 +1,189 @@
+/*
+ * This file is part of mpv.
+ *
+ * mpv is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 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 Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser 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/mp_image_pool.h"
+#include "video/vdpau.h"
+#include "video/hwdec.h"
+
+struct priv {
+    struct mp_log              *log;
+    struct mp_vdpau_ctx        *mpvdp;
+    uint64_t                    preemption_counter;
+    // vdpau-copy
+    Display                    *display;
+    struct mp_image_pool       *sw_pool;
+};
+
+static int init_decoder(struct lavc_ctx *ctx, 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 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 struct mp_image *update_format(struct lavc_ctx *ctx, struct mp_image *img)
+{
+    VdpChromaType chroma = 0;
+    uint32_t s_w, s_h;
+    if (av_vdpau_get_surface_parameters(ctx->avctx, &chroma, &s_w, &s_h) >= 0) {
+        if (chroma == VDP_CHROMA_TYPE_420)
+            img->params.hw_subfmt = IMGFMT_NV12;
+    }
+    return img;
+}
+
+static void uninit(struct lavc_ctx *ctx)
+{
+    struct priv *p = ctx->hwdec_priv;
+
+    if (p->display) {
+        // for copy path: we own this stuff
+        mp_vdpau_destroy(p->mpvdp);
+        XCloseDisplay(p->display);
+    }
+
+    TA_FREEP(&ctx->hwdec_priv);
+
+    if (ctx->avctx)
+        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 = hwdec_devices_get(ctx->hwdec_devs, HWDEC_VDPAU)->ctx,
+    };
+    ctx->hwdec_priv = p;
+
+    mp_vdpau_handle_preemption(p->mpvdp, &p->preemption_counter);
+    return 0;
+}
+
+static int probe(struct lavc_ctx *ctx, struct vd_lavc_hwdec *hwdec,
+                 const char *codec)
+{
+    if (!hwdec_devices_load(ctx->hwdec_devs, HWDEC_VDPAU))
+        return HWDEC_ERR_NO_CTX;
+    return 0;
+}
+
+static int init_copy(struct lavc_ctx *ctx)
+{
+    struct priv *p = talloc_ptrtype(NULL, p);
+    *p = (struct priv) {
+        .log = mp_log_new(p, ctx->log, "vdpau"),
+    };
+
+    p->display = XOpenDisplay(NULL);
+    if (!p->display)
+        goto error;
+
+    p->mpvdp = mp_vdpau_create_device_x11(p->log, p->display, true);
+    if (!p->mpvdp)
+        goto error;
+
+    p->sw_pool = talloc_steal(p, mp_image_pool_new(17));
+
+    ctx->hwdec_priv = p;
+
+    mp_vdpau_handle_preemption(p->mpvdp, &p->preemption_counter);
+    return 0;
+
+error:
+    if (p->display)
+        XCloseDisplay(p->display);
+    talloc_free(p);
+    return -1;
+}
+
+static int probe_copy(struct lavc_ctx *ctx, struct vd_lavc_hwdec *hwdec,
+                      const char *codec)
+{
+    assert(!ctx->hwdec_priv);
+
+    int r = HWDEC_ERR_NO_CTX;
+    if (init_copy(ctx) >=0 ) {
+        struct priv *p = ctx->hwdec_priv;
+        r = mp_vdpau_guess_if_emulated(p->mpvdp) ? HWDEC_ERR_EMULATED : 0;
+        uninit(ctx);
+    }
+    return r;
+}
+
+static struct mp_image *copy_image(struct lavc_ctx *ctx, struct mp_image *img)
+{
+    struct priv *p = ctx->hwdec_priv;
+    struct mp_hwdec_ctx *hwctx = &p->mpvdp->hwctx;
+    struct mp_image *out = hwctx->download_image(hwctx, img, p->sw_pool);
+    talloc_free(img);
+    return out;
+}
+
+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,
+    .process_image = update_format,
+};
+
+const struct vd_lavc_hwdec mp_vd_lavc_vdpau_copy = {
+    .type = HWDEC_VDPAU_COPY,
+    .copying = true,
+    .image_format = IMGFMT_VDPAU,
+    .probe = probe_copy,
+    .init = init_copy,
+    .uninit = uninit,
+    .init_decoder = init_decoder,
+    .allocate_image = allocate_image,
+    .process_image = copy_image,
+};