From 2aba6972cf9e07fe2817ff072e5e82756d80d795 Mon Sep 17 00:00:00 2001
From: wm4 <wm4@nowhere>
Date: Fri, 30 Sep 2016 13:46:27 +0200
Subject: vo_opengl: allow hwdec interops to support multiple image formats

---
 video/out/opengl/hwdec.c | 9 +++++++++
 video/out/opengl/hwdec.h | 6 ++++++
 video/out/opengl/video.c | 4 ++--
 3 files changed, 17 insertions(+), 2 deletions(-)

diff --git a/video/out/opengl/hwdec.c b/video/out/opengl/hwdec.c
index 7d47e152b5..261931a8d4 100644
--- a/video/out/opengl/hwdec.c
+++ b/video/out/opengl/hwdec.c
@@ -116,3 +116,12 @@ void gl_hwdec_uninit(struct gl_hwdec *hwdec)
         hwdec->driver->destroy(hwdec);
     talloc_free(hwdec);
 }
+
+bool gl_hwdec_test_format(struct gl_hwdec *hwdec, int imgfmt)
+{
+    if (!imgfmt)
+        return false;
+    if (hwdec->driver->test_format)
+        return hwdec->driver->test_format(hwdec, imgfmt);
+    return hwdec->driver->imgfmt == imgfmt;
+}
diff --git a/video/out/opengl/hwdec.h b/video/out/opengl/hwdec.h
index ce59b67e58..6a1bb98bff 100644
--- a/video/out/opengl/hwdec.h
+++ b/video/out/opengl/hwdec.h
@@ -38,6 +38,7 @@ struct gl_hwdec_driver {
     // Used to explicitly request a specific API.
     enum hwdec_type api;
     // The hardware surface IMGFMT_ that must be passed to map_image later.
+    // If the test_format callback is set, this field is ignored!
     int imgfmt;
     // Create the hwdec device. It must add it to hw->devs, if applicable.
     int (*create)(struct gl_hwdec *hw);
@@ -56,6 +57,9 @@ struct gl_hwdec_driver {
 
     void (*destroy)(struct gl_hwdec *hw);
 
+    // Optional callback for checking input format support.
+    bool (*test_format)(struct gl_hwdec *hw, int imgfmt);
+
     // The following functions provide an alternative API. Each gl_hwdec_driver
     // must have either map_frame or overlay_frame set (not both or none), and
     // if overlay_frame is set, it operates in overlay mode. In this mode,
@@ -79,4 +83,6 @@ struct gl_hwdec *gl_hwdec_load_api(struct mp_log *log, GL *gl,
 
 void gl_hwdec_uninit(struct gl_hwdec *hwdec);
 
+bool gl_hwdec_test_format(struct gl_hwdec *hwdec, int imgfmt);
+
 #endif
diff --git a/video/out/opengl/video.c b/video/out/opengl/video.c
index ab799f3583..99b0d8273c 100644
--- a/video/out/opengl/video.c
+++ b/video/out/opengl/video.c
@@ -829,7 +829,7 @@ static void init_video(struct gl_video *p)
 {
     GL *gl = p->gl;
 
-    if (p->hwdec && p->hwdec->driver->imgfmt == p->image_params.imgfmt) {
+    if (p->hwdec && gl_hwdec_test_format(p->hwdec, p->image_params.imgfmt)) {
         if (p->hwdec->driver->reinit(p->hwdec, &p->image_params) < 0)
             MP_ERR(p, "Initializing texture for hardware decoding failed.\n");
         init_image_desc(p, p->image_params.imgfmt);
@@ -3397,7 +3397,7 @@ bool gl_video_check_format(struct gl_video *p, int mp_format)
 {
     if (init_format(p, mp_format, true))
         return true;
-    if (p->hwdec && p->hwdec->driver->imgfmt == mp_format)
+    if (p->hwdec && gl_hwdec_test_format(p->hwdec, mp_format))
         return true;
     return false;
 }
-- 
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