vo_opengl: refactor into vo_gpu

This is done in several steps:

1. refactor MPGLContext -> struct ra_ctx
2. move GL-specific stuff in vo_opengl into opengl/context.c
3. generalize context creation to support other APIs, and add --gpu-api
4. rename all of the --opengl- options that are no longer opengl-specific
5. move all of the stuff from opengl/* that isn't GL-specific into gpu/
   (note: opengl/gl_utils.h became opengl/utils.h)
6. rename vo_opengl to vo_gpu
7. to handle window screenshots, the short-term approach was to just add
   it to ra_swchain_fns. Long term (and for vulkan) this has to be moved to
   ra itself (and vo_gpu altered to compensate), but this was a stop-gap
   measure to prevent this commit from getting too big
8. move ra->fns->flush to ra_gl_ctx instead
9. some other minor changes that I've probably already forgotten

Note: This is one half of a major refactor, the other half of which is
provided by rossy's following commit. This commit enables support for
all linux platforms, while his version enables support for all non-linux
platforms.

Note 2: vo_opengl_cb.c also re-uses ra_gl_ctx so it benefits from the
--opengl- options like --opengl-early-flush, --opengl-finish etc. Should
be a strict superset of the old functionality.

Disclaimer: Since I have no way of compiling mpv on all platforms, some
of these ports were done blindly. Specifically, the blind ports included
context_mali_fbdev.c and context_rpi.c. Since they're both based on
egl_helpers, the port should have gone smoothly without any major
changes required. But if somebody complains about a compile error on
those platforms (assuming anybody actually uses them), you know where to
complain.

1 files changed, 0 insertions, 130 deletions

diff --git a/video/out/opengl/hwdec.h b/video/out/opengl/hwdec.h
deleted file mode 100644
index 20bbaae9eb..0000000000
--- a/video/out/opengl/hwdec.h
+++ /dev/null
@@ -1,130 +0,0 @@
-#ifndef MPGL_HWDEC_H_
-#define MPGL_HWDEC_H_
-
-#include "video/mp_image.h"
-#include "ra.h"
-#include "video/hwdec.h"
-
-struct ra_hwdec {
-    const struct ra_hwdec_driver *driver;
-    struct mp_log *log;
-    struct mpv_global *global;
-    struct ra *ra;
-    struct mp_hwdec_devices *devs;
-    // GLSL extensions required to sample textures from this.
-    const char **glsl_extensions;
-    // For free use by hwdec driver
-    void *priv;
-    // For working around the vdpau vs. vaapi mess.
-    bool probing;
-    // Used in overlay mode only.
-    float overlay_colorkey[4];
-};
-
-struct ra_hwdec_mapper {
-    const struct ra_hwdec_mapper_driver *driver;
-    struct mp_log *log;
-    struct ra *ra;
-    void *priv;
-    struct ra_hwdec *owner;
-    // Input frame parameters. (Set before init(), immutable.)
-    struct mp_image_params src_params;
-    // Output frame parameters (represents the format the textures return). Must
-    // be set by init(), immutable afterwards,
-    struct mp_image_params dst_params;
-
-    // The currently mapped source image (or the image about to be mapped in
-    // ->map()). NULL if unmapped. The mapper can also clear this reference if
-    // the mapped textures contain a full copy.
-    struct mp_image *src;
-
-    // The mapped textures and metadata about them. These fields change if a
-    // new frame is mapped (or unmapped), but otherwise remain constant.
-    // The common code won't mess with these, so you can e.g. set them in the
-    // .init() callback.
-    struct ra_tex *tex[4];
-    bool vdpau_fields;
-};
-
-// This can be used to map frames of a specific hw format as GL textures.
-struct ra_hwdec_mapper_driver {
-    // Used to create ra_hwdec_mapper.priv.
-    size_t priv_size;
-
-    // Init the mapper implementation. At this point, the field src_params,
-    // fns, devs, priv are initialized.
-    int (*init)(struct ra_hwdec_mapper *mapper);
-    // Destroy the mapper. unmap is called before this.
-    void (*uninit)(struct ra_hwdec_mapper *mapper);
-
-    // Map mapper->src as texture, and set mapper->frame to textures using it.
-    // It is expected that that the textures remain valid until the next unmap
-    // or uninit call.
-    // The function is allowed to unref mapper->src if it's not needed (i.e.
-    // this function creates a copy).
-    // The underlying format can change, so you might need to do some form
-    // of change detection. You also must reject unsupported formats with an
-    // error.
-    // On error, returns negative value on error and remains unmapped.
-    int (*map)(struct ra_hwdec_mapper *mapper);
-    // Unmap the frame. Does nothing if already unmapped. Optional.
-    void (*unmap)(struct ra_hwdec_mapper *mapper);
-};
-
-struct ra_hwdec_driver {
-    // Name of the interop backend. This is used for informational purposes only.
-    const char *name;
-    // Used to create ra_hwdec.priv.
-    size_t priv_size;
-    // Used to explicitly request a specific API.
-    enum hwdec_type api;
-    // One of the hardware surface IMGFMT_ that must be passed to map_image later.
-    // Terminated with a 0 entry. (Extend the array size as needed.)
-    const int imgfmts[3];
-    // Dosn't load this unless requested by name.
-    bool testing_only;
-
-    // Create the hwdec device. It must add it to hw->devs, if applicable.
-    int (*init)(struct ra_hwdec *hw);
-    void (*uninit)(struct ra_hwdec *hw);
-
-    // This will be used to create a ra_hwdec_mapper from ra_hwdec.
-    const struct ra_hwdec_mapper_driver *mapper;
-
-    // The following function provides an alternative API. Each ra_hwdec_driver
-    // must have either provide a mapper or overlay_frame (not both or none), and
-    // if overlay_frame is set, it operates in overlay mode. In this mode,
-    // OSD etc. is rendered via OpenGL, but the video is rendered as a separate
-    // layer below it.
-    // Non-overlay mode is strictly preferred, so try not to use overlay mode.
-    // Set the given frame as overlay, replacing the previous one. This can also
-    // just change the position of the overlay.
-    // hw_image==src==dst==NULL is passed to clear the overlay.
-    int (*overlay_frame)(struct ra_hwdec *hw, struct mp_image *hw_image,
-                         struct mp_rect *src, struct mp_rect *dst, bool newframe);
-};
-
-struct ra_hwdec *ra_hwdec_load_api(struct mp_log *log, struct ra *ra,
-                                   struct mpv_global *g,
-                                   struct mp_hwdec_devices *devs,
-                                   enum hwdec_type api);
-
-struct ra_hwdec *ra_hwdec_load(struct mp_log *log, struct ra *ra,
-                               struct mpv_global *g,
-                               struct mp_hwdec_devices *devs,
-                               const char *name);
-
-int ra_hwdec_validate_opt(struct mp_log *log, const m_option_t *opt,
-                          struct bstr name, struct bstr param);
-
-void ra_hwdec_uninit(struct ra_hwdec *hwdec);
-
-bool ra_hwdec_test_format(struct ra_hwdec *hwdec, int imgfmt);
-
-struct ra_hwdec_mapper *ra_hwdec_mapper_create(struct ra_hwdec *hwdec,
-                                               struct mp_image_params *params);
-void ra_hwdec_mapper_free(struct ra_hwdec_mapper **mapper);
-void ra_hwdec_mapper_unmap(struct ra_hwdec_mapper *mapper);
-int ra_hwdec_mapper_map(struct ra_hwdec_mapper *mapper, struct mp_image *img);
-
-#endif