From a52a52fa6ec4265a2aeb39d775f46ebc928fe8c7 Mon Sep 17 00:00:00 2001
From: wm4 <wm4@nowhere>
Date: Thu, 23 Mar 2017 11:06:28 +0100
Subject: vdpau: support new vdpau libavcodec decode API

The new API works like the new vaapi API, using generic hwaccel support.

One minor detail is the error message that will be printed if using
non-4:2:0 surfaces (which as far as I can tell is completely broken in
the nVidia drivers and thus not supported by mpv). The HEVC warning
(which is completely broken in the nVidia drivers but should work with
Mesa) had to be added to the generic hwaccel code.

This also trashes display preemption recovery. Fuck that. It never
really worked. If someone complains, I might attempt to add it back
somehow.

This is the 4th iteration of the libavcodec vdpau API (after the
separate decoder API, the manual hwaccel API, and the automatic vdpau
hwaccel API). Fortunately, further iterations will be generic, and not
require much vdpau-specific changes (if any at all).
---
 video/decode/vd_lavc.c | 44 +++++++++++++++++++++++++++++++++++++++++---
 1 file changed, 41 insertions(+), 3 deletions(-)

(limited to 'video/decode/vd_lavc.c')

diff --git a/video/decode/vd_lavc.c b/video/decode/vd_lavc.c
index fd4bf59092..d51e834ce2 100644
--- a/video/decode/vd_lavc.c
+++ b/video/decode/vd_lavc.c
@@ -125,8 +125,6 @@ const struct m_sub_options vd_lavc_conf = {
     },
 };
 
-extern const struct vd_lavc_hwdec mp_vd_lavc_vdpau;
-extern const struct vd_lavc_hwdec mp_vd_lavc_vdpau_copy;
 extern const struct vd_lavc_hwdec mp_vd_lavc_videotoolbox;
 extern const struct vd_lavc_hwdec mp_vd_lavc_videotoolbox_copy;
 extern const struct vd_lavc_hwdec mp_vd_lavc_dxva2;
@@ -205,12 +203,43 @@ extern const struct vd_lavc_hwdec mp_vd_lavc_vaapi_copy;
 #endif
 #endif
 
+#if HAVE_VDPAU_HWACCEL
+#if HAVE_VDPAU_HWACCEL_NEW
+const struct vd_lavc_hwdec mp_vd_lavc_vdpau = {
+    .type = HWDEC_VDPAU,
+    .image_format = IMGFMT_VDPAU,
+    .generic_hwaccel = true,
+    .pixfmt_map = (const enum AVPixelFormat[][2]) {
+        {AV_PIX_FMT_YUV420P,   AV_PIX_FMT_YUV420P},
+        {AV_PIX_FMT_NONE}
+    },
+};
+
+#include "video/vdpau.h"
+
+const struct vd_lavc_hwdec mp_vd_lavc_vdpau_copy = {
+    .type = HWDEC_VDPAU_COPY,
+    .copying = true,
+    .image_format = IMGFMT_VDPAU,
+    .generic_hwaccel = true,
+    .create_dev = vdpau_create_standalone,
+    .pixfmt_map = (const enum AVPixelFormat[][2]) {
+        {AV_PIX_FMT_YUV420P,   AV_PIX_FMT_YUV420P},
+        {AV_PIX_FMT_NONE}
+    },
+};
+#else
+extern const struct vd_lavc_hwdec mp_vd_lavc_vdpau;
+extern const struct vd_lavc_hwdec mp_vd_lavc_vdpau_copy;
+#endif
+#endif
+
 static const struct vd_lavc_hwdec *const hwdec_list[] = {
 #if HAVE_RPI
     &mp_vd_lavc_rpi,
     &mp_vd_lavc_rpi_copy,
 #endif
-#if HAVE_VDPAU_HWACCEL
+#if HAVE_VDPAU_HWACCEL_OLD || HAVE_VDPAU_HWACCEL_NEW
     &mp_vd_lavc_vdpau,
     &mp_vd_lavc_vdpau_copy,
 #endif
@@ -555,6 +584,9 @@ static void init_avctx(struct dec_video *vd, const char *decoder,
 
     if (ctx->hwdec) {
         avctx->thread_count = 1;
+#if HAVE_VDPAU_HWACCEL_NEW
+        avctx->hwaccel_flags |= AV_HWACCEL_FLAG_IGNORE_LEVEL;
+#endif
         if (ctx->hwdec->image_format)
             avctx->get_format = get_format_hwdec;
         if (ctx->hwdec->allocate_image)
@@ -797,6 +829,12 @@ static int init_generic_hwaccel(struct dec_video *vd)
 
     ctx->hwdec_fmt = hwdec->image_format;
 
+    if (hwdec->image_format == IMGFMT_VDPAU &&
+        ctx->avctx->codec_id == AV_CODEC_ID_HEVC)
+    {
+        MP_WARN(ctx, "HEVC video output may be broken due to nVidia bugs.\n");
+    }
+
     return hwdec_setup_hw_frames_ctx(ctx, ctx->hwdec_dev->av_device_ref,
                                      av_sw_format, pool_size);
 }
-- 
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