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, 239 deletions

diff --git a/video/out/opengl/hwdec.c b/video/out/opengl/hwdec.c
deleted file mode 100644
index 5fbc1aa4a9..0000000000
--- a/video/out/opengl/hwdec.c
+++ /dev/null
@@ -1,239 +0,0 @@
-/*
- * 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 <stddef.h>
-#include <string.h>
-
-#include "config.h"
-
-#include "common/common.h"
-#include "common/msg.h"
-#include "options/m_config.h"
-#include "hwdec.h"
-
-extern const struct ra_hwdec_driver ra_hwdec_vaegl;
-extern const struct ra_hwdec_driver ra_hwdec_vaglx;
-extern const struct ra_hwdec_driver ra_hwdec_videotoolbox;
-extern const struct ra_hwdec_driver ra_hwdec_vdpau;
-extern const struct ra_hwdec_driver ra_hwdec_dxva2egl;
-extern const struct ra_hwdec_driver ra_hwdec_d3d11egl;
-extern const struct ra_hwdec_driver ra_hwdec_d3d11eglrgb;
-extern const struct ra_hwdec_driver ra_hwdec_dxva2gldx;
-extern const struct ra_hwdec_driver ra_hwdec_dxva2;
-extern const struct ra_hwdec_driver ra_hwdec_cuda;
-extern const struct ra_hwdec_driver ra_hwdec_rpi_overlay;
-
-static const struct ra_hwdec_driver *const mpgl_hwdec_drivers[] = {
-#if HAVE_VAAPI_EGL
-    &ra_hwdec_vaegl,
-#endif
-#if HAVE_VAAPI_GLX
-    &ra_hwdec_vaglx,
-#endif
-#if HAVE_VDPAU_GL_X11
-    &ra_hwdec_vdpau,
-#endif
-#if HAVE_VIDEOTOOLBOX_GL || HAVE_IOS_GL
-    &ra_hwdec_videotoolbox,
-#endif
-#if HAVE_D3D_HWACCEL
-    &ra_hwdec_d3d11egl,
-    &ra_hwdec_d3d11eglrgb,
- #if HAVE_D3D9_HWACCEL
-    &ra_hwdec_dxva2egl,
- #endif
-#endif
-#if HAVE_GL_DXINTEROP_D3D9
-    &ra_hwdec_dxva2gldx,
-#endif
-#if HAVE_CUDA_HWACCEL
-    &ra_hwdec_cuda,
-#endif
-#if HAVE_RPI
-    &ra_hwdec_rpi_overlay,
-#endif
-    NULL
-};
-
-static struct ra_hwdec *load_hwdec_driver(struct mp_log *log, struct ra *ra,
-                                          struct mpv_global *global,
-                                          struct mp_hwdec_devices *devs,
-                                          const struct ra_hwdec_driver *drv,
-                                          bool is_auto)
-{
-    struct ra_hwdec *hwdec = talloc(NULL, struct ra_hwdec);
-    *hwdec = (struct ra_hwdec) {
-        .driver = drv,
-        .log = mp_log_new(hwdec, log, drv->name),
-        .global = global,
-        .ra = ra,
-        .devs = devs,
-        .probing = is_auto,
-        .priv = talloc_zero_size(hwdec, drv->priv_size),
-    };
-    mp_verbose(log, "Loading hwdec driver '%s'\n", drv->name);
-    if (hwdec->driver->init(hwdec) < 0) {
-        ra_hwdec_uninit(hwdec);
-        mp_verbose(log, "Loading failed.\n");
-        return NULL;
-    }
-    return hwdec;
-}
-
-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)
-{
-    bool is_auto = HWDEC_IS_AUTO(api);
-    for (int n = 0; mpgl_hwdec_drivers[n]; n++) {
-        const struct ra_hwdec_driver *drv = mpgl_hwdec_drivers[n];
-        if ((is_auto || api == drv->api) && !drv->testing_only) {
-            struct ra_hwdec *r = load_hwdec_driver(log, ra, g, devs, drv, is_auto);
-            if (r)
-                return r;
-        }
-    }
-    return NULL;
-}
-
-// Load by option name.
-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 g_hwdec_api;
-    mp_read_option_raw(g, "hwdec", &m_option_type_choice, &g_hwdec_api);
-    if (!name || !name[0])
-        name = m_opt_choice_str(mp_hwdec_names, g_hwdec_api);
-
-    int api_id = HWDEC_NONE;
-    for (int n = 0; mp_hwdec_names[n].name; n++) {
-        if (name && strcmp(mp_hwdec_names[n].name, name) == 0)
-            api_id = mp_hwdec_names[n].value;
-    }
-
-    for (int n = 0; mpgl_hwdec_drivers[n]; n++) {
-        const struct ra_hwdec_driver *drv = mpgl_hwdec_drivers[n];
-        if (name && strcmp(drv->name, name) == 0) {
-            struct ra_hwdec *r = load_hwdec_driver(log, ra, g, devs, drv, false);
-            if (r)
-                return r;
-        }
-    }
-
-    return ra_hwdec_load_api(log, ra, g, devs, api_id);
-}
-
-int ra_hwdec_validate_opt(struct mp_log *log, const m_option_t *opt,
-                          struct bstr name, struct bstr param)
-{
-    bool help = bstr_equals0(param, "help");
-    if (help)
-        mp_info(log, "Available hwdecs:\n");
-    for (int n = 0; mpgl_hwdec_drivers[n]; n++) {
-        const struct ra_hwdec_driver *drv = mpgl_hwdec_drivers[n];
-        const char *api_name = m_opt_choice_str(mp_hwdec_names, drv->api);
-        if (help) {
-            mp_info(log, "    %s [%s]\n", drv->name, api_name);
-        } else if (bstr_equals0(param, drv->name) ||
-                   bstr_equals0(param, api_name))
-        {
-            return 1;
-        }
-    }
-    if (help) {
-        mp_info(log, "    auto (loads best)\n"
-                     "    (other --hwdec values)\n"
-                     "Setting an empty string means use --hwdec.\n");
-        return M_OPT_EXIT;
-    }
-    if (!param.len)
-        return 1; // "" is treated specially
-    for (int n = 0; mp_hwdec_names[n].name; n++) {
-        if (bstr_equals0(param, mp_hwdec_names[n].name))
-            return 1;
-    }
-    mp_fatal(log, "No hwdec backend named '%.*s' found!\n", BSTR_P(param));
-    return M_OPT_INVALID;
-}
-
-void ra_hwdec_uninit(struct ra_hwdec *hwdec)
-{
-    if (hwdec)
-        hwdec->driver->uninit(hwdec);
-    talloc_free(hwdec);
-}
-
-bool ra_hwdec_test_format(struct ra_hwdec *hwdec, int imgfmt)
-{
-    for (int n = 0; hwdec->driver->imgfmts[n]; n++) {
-        if (hwdec->driver->imgfmts[n] == imgfmt)
-            return true;
-    }
-    return false;
-}
-
-struct ra_hwdec_mapper *ra_hwdec_mapper_create(struct ra_hwdec *hwdec,
-                                               struct mp_image_params *params)
-{
-    assert(ra_hwdec_test_format(hwdec, params->imgfmt));
-
-    struct ra_hwdec_mapper *mapper = talloc_ptrtype(NULL, mapper);
-    *mapper = (struct ra_hwdec_mapper){
-        .owner = hwdec,
-        .driver = hwdec->driver->mapper,
-        .log = hwdec->log,
-        .ra = hwdec->ra,
-        .priv = talloc_zero_size(mapper, hwdec->driver->mapper->priv_size),
-        .src_params = *params,
-        .dst_params = *params,
-    };
-    if (mapper->driver->init(mapper) < 0)
-        ra_hwdec_mapper_free(&mapper);
-    return mapper;
-}
-
-void ra_hwdec_mapper_free(struct ra_hwdec_mapper **mapper)
-{
-    struct ra_hwdec_mapper *p = *mapper;
-    if (p) {
-        ra_hwdec_mapper_unmap(p);
-        p->driver->uninit(p);
-        talloc_free(p);
-    }
-    *mapper = NULL;
-}
-
-void ra_hwdec_mapper_unmap(struct ra_hwdec_mapper *mapper)
-{
-    if (mapper->driver->unmap)
-        mapper->driver->unmap(mapper);
-    mp_image_unrefp(&mapper->src);
-}
-
-int ra_hwdec_mapper_map(struct ra_hwdec_mapper *mapper, struct mp_image *img)
-{
-    ra_hwdec_mapper_unmap(mapper);
-    mp_image_setrefp(&mapper->src, img);
-    if (mapper->driver->map(mapper) < 0) {
-        ra_hwdec_mapper_unmap(mapper);
-        return -1;
-    }
-    return 0;
-}