aboutsummaryrefslogtreecommitdiffhomepage
path: root/video/out/opengl/hwdec_vaegl.c
blob: b4587c5eb95a0ac15d1499f767321c0fecd239b3 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
/*
 * 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 <assert.h>
#include <unistd.h>

#include <EGL/egl.h>
#include <EGL/eglext.h>

#include <va/va_drmcommon.h>

#include <libavutil/common.h>
#include <libavutil/hwcontext.h>
#include <libavutil/hwcontext_vaapi.h>

#include "config.h"

#include "video/out/gpu/hwdec.h"
#include "video/mp_image_pool.h"
#include "video/vaapi.h"
#include "common.h"
#include "ra_gl.h"

#ifndef GL_OES_EGL_image
typedef void* GLeglImageOES;
#endif
#ifndef EGL_KHR_image
typedef void *EGLImageKHR;
#endif

#ifndef EGL_LINUX_DMA_BUF_EXT
#define EGL_LINUX_DMA_BUF_EXT             0x3270
#define EGL_LINUX_DRM_FOURCC_EXT          0x3271
#define EGL_DMA_BUF_PLANE0_FD_EXT         0x3272
#define EGL_DMA_BUF_PLANE0_OFFSET_EXT     0x3273
#define EGL_DMA_BUF_PLANE0_PITCH_EXT      0x3274
#endif

#if HAVE_VAAPI_X11
#include <va/va_x11.h>

static VADisplay *create_x11_va_display(GL *gl)
{
    Display *x11 = mpgl_get_native_display(gl, "x11");
    return x11 ? vaGetDisplay(x11) : NULL;
}
#endif

#if HAVE_VAAPI_WAYLAND
#include <va/va_wayland.h>

static VADisplay *create_wayland_va_display(GL *gl)
{
    struct wl_display *wl = mpgl_get_native_display(gl, "wl");
    return wl ? vaGetDisplayWl(wl) : NULL;
}
#endif

#if HAVE_VAAPI_DRM
#include <va/va_drm.h>

static VADisplay *create_drm_va_display(GL *gl)
{
    int drm_fd = (intptr_t)mpgl_get_native_display(gl, "drm");
    // Note: yes, drm_fd==0 could be valid - but it's rare and doesn't fit with
    //       our slightly crappy way of passing it through, so consider 0 not
    //       valid.
    return drm_fd ? vaGetDisplayDRM(drm_fd) : NULL;
}
#endif

struct va_create_native {
    const char *name;
    VADisplay *(*create)(GL *gl);
};

static const struct va_create_native create_native_cbs[] = {
#if HAVE_VAAPI_X11
    {"x11",     create_x11_va_display},
#endif
#if HAVE_VAAPI_WAYLAND
    {"wayland", create_wayland_va_display},
#endif
#if HAVE_VAAPI_DRM
    {"drm",     create_drm_va_display},
#endif
};

static VADisplay *create_native_va_display(GL *gl, struct mp_log *log)
{
    for (int n = 0; n < MP_ARRAY_SIZE(create_native_cbs); n++) {
        const struct va_create_native *disp = &create_native_cbs[n];
        mp_verbose(log, "Trying to open a %s VA display...\n", disp->name);
        VADisplay *display = disp->create(gl);
        if (display)
            return display;
    }
    return NULL;
}

struct priv_owner {
    struct mp_vaapi_ctx *ctx;
    VADisplay *display;
    int *formats;
    bool probing_formats; // temporary during init
};

struct priv {
    int num_planes;
    struct ra_tex *tex[4];
    GLuint gl_textures[4];
    EGLImageKHR images[4];
    VAImage current_image;
    bool buffer_acquired;
#if VA_CHECK_VERSION(1, 1, 0)
    bool esh_not_implemented;
    VADRMPRIMESurfaceDescriptor desc;
    bool surface_acquired;
#endif

    EGLImageKHR (EGLAPIENTRY *CreateImageKHR)(EGLDisplay, EGLContext,
                                              EGLenum, EGLClientBuffer,
                                              const EGLint *);
    EGLBoolean (EGLAPIENTRY *DestroyImageKHR)(EGLDisplay, EGLImageKHR);
    void (EGLAPIENTRY *EGLImageTargetTexture2DOES)(GLenum, GLeglImageOES);
};

static void determine_working_formats(struct ra_hwdec *hw);

static void uninit(struct ra_hwdec *hw)
{
    struct priv_owner *p = hw->priv;
    if (p->ctx)
        hwdec_devices_remove(hw->devs, &p->ctx->hwctx);
    va_destroy(p->ctx);
}

static int init(struct ra_hwdec *hw)
{
    struct priv_owner *p = hw->priv;

    if (!ra_is_gl(hw->ra) || !eglGetCurrentContext())
        return -1;

    const char *exts = eglQueryString(eglGetCurrentDisplay(), EGL_EXTENSIONS);
    if (!exts)
        return -1;

    GL *gl = ra_gl_get(hw->ra);
    if (!strstr(exts, "EXT_image_dma_buf_import") ||
        !strstr(exts, "EGL_KHR_image_base") ||
        !strstr(gl->extensions, "GL_OES_EGL_image") ||
        !(gl->mpgl_caps & MPGL_CAP_TEX_RG))
        return -1;

    p->display = create_native_va_display(gl, hw->log);
    if (!p->display) {
        MP_VERBOSE(hw, "Could not create a VA display.\n");
        return -1;
    }

    p->ctx = va_initialize(p->display, hw->log, true);
    if (!p->ctx) {
        vaTerminate(p->display);
        return -1;
    }
    if (!p->ctx->av_device_ref) {
        MP_VERBOSE(hw, "libavutil vaapi code rejected the driver?\n");
        return -1;
    }

    if (hw->probing && va_guess_if_emulated(p->ctx)) {
        return -1;
    }

    MP_VERBOSE(hw, "using VAAPI EGL interop\n");

    determine_working_formats(hw);
    if (!p->formats || !p->formats[0]) {
        return -1;
    }

    p->ctx->hwctx.supported_formats = p->formats;
    p->ctx->hwctx.driver_name = hw->driver->name;
    hwdec_devices_add(hw->devs, &p->ctx->hwctx);
    return 0;
}

static void mapper_unmap(struct ra_hwdec_mapper *mapper)
{
    struct priv_owner *p_owner = mapper->owner->priv;
    VADisplay *display = p_owner->display;
    struct priv *p = mapper->priv;
    VAStatus status;

    for (int n = 0; n < 4; n++) {
        if (p->images[n])
            p->DestroyImageKHR(eglGetCurrentDisplay(), p->images[n]);
        p->images[n] = 0;
    }

#if VA_CHECK_VERSION(1, 1, 0)
    if (p->surface_acquired) {
        for (int n = 0; n < p->desc.num_objects; n++)
            close(p->desc.objects[n].fd);
        p->surface_acquired = false;
    }
#endif

    if (p->buffer_acquired) {
        status = vaReleaseBufferHandle(display, p->current_image.buf);
        CHECK_VA_STATUS(mapper, "vaReleaseBufferHandle()");
        p->buffer_acquired = false;
    }
    if (p->current_image.image_id != VA_INVALID_ID) {
        status = vaDestroyImage(display, p->current_image.image_id);
        CHECK_VA_STATUS(mapper, "vaDestroyImage()");
        p->current_image.image_id = VA_INVALID_ID;
    }
}

static void mapper_uninit(struct ra_hwdec_mapper *mapper)
{
    struct priv *p = mapper->priv;
    GL *gl = ra_gl_get(mapper->ra);

    gl->DeleteTextures(4, p->gl_textures);
    for (int n = 0; n < 4; n++) {
        p->gl_textures[n] = 0;
        ra_tex_free(mapper->ra, &p->tex[n]);
    }
}

static bool check_fmt(struct ra_hwdec_mapper *mapper, int fmt)
{
    struct priv_owner *p_owner = mapper->owner->priv;
    for (int n = 0; p_owner->formats && p_owner->formats[n]; n++) {
        if (p_owner->formats[n] == fmt)
            return true;
    }
    return false;
}

static int mapper_init(struct ra_hwdec_mapper *mapper)
{
    struct priv_owner *p_owner = mapper->owner->priv;
    struct priv *p = mapper->priv;
    GL *gl = ra_gl_get(mapper->ra);

    p->current_image.buf = p->current_image.image_id = VA_INVALID_ID;

    // EGL_KHR_image_base
    p->CreateImageKHR = (void *)eglGetProcAddress("eglCreateImageKHR");
    p->DestroyImageKHR = (void *)eglGetProcAddress("eglDestroyImageKHR");
    // GL_OES_EGL_image
    p->EGLImageTargetTexture2DOES =
        (void *)eglGetProcAddress("glEGLImageTargetTexture2DOES");

    if (!p->CreateImageKHR || !p->DestroyImageKHR ||
        !p->EGLImageTargetTexture2DOES)
        return -1;

    mapper->dst_params = mapper->src_params;
    mapper->dst_params.imgfmt = mapper->src_params.hw_subfmt;
    mapper->dst_params.hw_subfmt = 0;

    struct ra_imgfmt_desc desc = {0};
    struct mp_image layout = {0};

    if (!ra_get_imgfmt_desc(mapper->ra, mapper->dst_params.imgfmt, &desc))
        return -1;

    p->num_planes = desc.num_planes;
    mp_image_set_params(&layout, &mapper->dst_params);

    gl->GenTextures(4, p->gl_textures);
    for (int n = 0; n < desc.num_planes; n++) {
        gl->BindTexture(GL_TEXTURE_2D, p->gl_textures[n]);
        gl->TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
        gl->TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
        gl->TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
        gl->TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
        gl->BindTexture(GL_TEXTURE_2D, 0);

        struct ra_tex_params params = {
            .dimensions = 2,
            .w = mp_image_plane_w(&layout, n),
            .h = mp_image_plane_h(&layout, n),
            .d = 1,
            .format = desc.planes[n],
            .render_src = true,
            .src_linear = true,
        };

        if (params.format->ctype != RA_CTYPE_UNORM)
            return -1;

        p->tex[n] = ra_create_wrapped_tex(mapper->ra, &params,
                                          p->gl_textures[n]);
        if (!p->tex[n])
            return -1;
    }

    if (!p_owner->probing_formats && !check_fmt(mapper, mapper->dst_params.imgfmt))
    {
        MP_FATAL(mapper, "unsupported VA image format %s\n",
                 mp_imgfmt_to_name(mapper->dst_params.imgfmt));
        return -1;
    }

    return 0;
}

#define ADD_ATTRIB(name, value)                         \
    do {                                                \
    assert(num_attribs + 3 < MP_ARRAY_SIZE(attribs));   \
    attribs[num_attribs++] = (name);                    \
    attribs[num_attribs++] = (value);                   \
    attribs[num_attribs] = EGL_NONE;                    \
    } while(0)

static int mapper_map(struct ra_hwdec_mapper *mapper)
{
    struct priv_owner *p_owner = mapper->owner->priv;
    struct priv *p = mapper->priv;
    GL *gl = ra_gl_get(mapper->ra);
    VAStatus status;
    VAImage *va_image = &p->current_image;
    VADisplay *display = p_owner->display;

#if VA_CHECK_VERSION(1, 1, 0)
    if (p->esh_not_implemented)
        goto esh_failed;

    status = vaExportSurfaceHandle(display, va_surface_id(mapper->src),
                                   VA_SURFACE_ATTRIB_MEM_TYPE_DRM_PRIME_2,
                                   VA_EXPORT_SURFACE_READ_ONLY |
                                   VA_EXPORT_SURFACE_SEPARATE_LAYERS,
                                   &p->desc);
    if (!CHECK_VA_STATUS(mapper, "vaAcquireSurfaceHandle()")) {
        if (status == VA_STATUS_ERROR_UNIMPLEMENTED)
            p->esh_not_implemented = true;
        goto esh_failed;
    }
    p->surface_acquired = true;

    for (int n = 0; n < p->num_planes; n++) {
        int attribs[20] = {EGL_NONE};
        int num_attribs = 0;

        ADD_ATTRIB(EGL_LINUX_DRM_FOURCC_EXT, p->desc.layers[n].drm_format);
        ADD_ATTRIB(EGL_WIDTH,  p->tex[n]->params.w);
        ADD_ATTRIB(EGL_HEIGHT, p->tex[n]->params.h);

#define ADD_PLANE_ATTRIBS(plane) do { \
            ADD_ATTRIB(EGL_DMA_BUF_PLANE ## plane ## _FD_EXT, \
                       p->desc.objects[p->desc.layers[n].object_index[plane]].fd); \
            ADD_ATTRIB(EGL_DMA_BUF_PLANE ## plane ## _OFFSET_EXT, \
                       p->desc.layers[n].offset[plane]); \
            ADD_ATTRIB(EGL_DMA_BUF_PLANE ## plane ## _PITCH_EXT, \
                       p->desc.layers[n].pitch[plane]); \
        } while (0)

        ADD_PLANE_ATTRIBS(0);
        if (p->desc.layers[n].num_planes > 1)
            ADD_PLANE_ATTRIBS(1);
        if (p->desc.layers[n].num_planes > 2)
            ADD_PLANE_ATTRIBS(2);
        if (p->desc.layers[n].num_planes > 3)
            ADD_PLANE_ATTRIBS(3);

        p->images[n] = p->CreateImageKHR(eglGetCurrentDisplay(),
            EGL_NO_CONTEXT, EGL_LINUX_DMA_BUF_EXT, NULL, attribs);
        if (!p->images[n])
            goto esh_failed;

        gl->BindTexture(GL_TEXTURE_2D, p->gl_textures[n]);
        p->EGLImageTargetTexture2DOES(GL_TEXTURE_2D, p->images[n]);

        mapper->tex[n] = p->tex[n];
    }
    gl->BindTexture(GL_TEXTURE_2D, 0);

    if (p->desc.fourcc == VA_FOURCC_YV12)
        MPSWAP(struct ra_tex*, mapper->tex[1], mapper->tex[2]);

    return 0;

esh_failed:
    if (p->surface_acquired) {
        for (int n = 0; n < p->desc.num_objects; n++)
            close(p->desc.objects[n].fd);
        p->surface_acquired = false;
    }
#endif

    status = vaDeriveImage(display, va_surface_id(mapper->src), va_image);
    if (!CHECK_VA_STATUS(mapper, "vaDeriveImage()"))
        goto err;

    VABufferInfo buffer_info = {.mem_type = VA_SURFACE_ATTRIB_MEM_TYPE_DRM_PRIME};
    status = vaAcquireBufferHandle(display, va_image->buf, &buffer_info);
    if (!CHECK_VA_STATUS(mapper, "vaAcquireBufferHandle()"))
        goto err;
    p->buffer_acquired = true;

    int drm_fmts[8] = {
        // 1 bytes per component, 1-4 components
        MKTAG('R', '8', ' ', ' '),       // DRM_FORMAT_R8
        MKTAG('G', 'R', '8', '8'),       // DRM_FORMAT_GR88
        0,                               // untested (DRM_FORMAT_RGB888?)
        0,                               // untested (DRM_FORMAT_RGBA8888?)
        // 2 bytes per component, 1-4 components
        MKTAG('R', '1', '6', ' '),       // proposed DRM_FORMAT_R16
        MKTAG('G', 'R', '3', '2'),       // proposed DRM_FORMAT_GR32
        0,                               // N/A
        0,                               // N/A
    };

    for (int n = 0; n < p->num_planes; n++) {
        int attribs[20] = {EGL_NONE};
        int num_attribs = 0;

        const struct ra_format *fmt = p->tex[n]->params.format;
        int n_comp = fmt->num_components;
        int comp_s = fmt->component_size[n] / 8;
        if (n_comp < 1 || n_comp > 3 || comp_s < 1 || comp_s > 2)
            goto err;
        int drm_fmt = drm_fmts[n_comp - 1 + (comp_s - 1) * 4];
        if (!drm_fmt)
            goto err;

        ADD_ATTRIB(EGL_LINUX_DRM_FOURCC_EXT, drm_fmt);
        ADD_ATTRIB(EGL_WIDTH, p->tex[n]->params.w);
        ADD_ATTRIB(EGL_HEIGHT, p->tex[n]->params.h);
        ADD_ATTRIB(EGL_DMA_BUF_PLANE0_FD_EXT, buffer_info.handle);
        ADD_ATTRIB(EGL_DMA_BUF_PLANE0_OFFSET_EXT, va_image->offsets[n]);
        ADD_ATTRIB(EGL_DMA_BUF_PLANE0_PITCH_EXT, va_image->pitches[n]);

        p->images[n] = p->CreateImageKHR(eglGetCurrentDisplay(),
            EGL_NO_CONTEXT, EGL_LINUX_DMA_BUF_EXT, NULL, attribs);
        if (!p->images[n])
            goto err;

        gl->BindTexture(GL_TEXTURE_2D, p->gl_textures[n]);
        p->EGLImageTargetTexture2DOES(GL_TEXTURE_2D, p->images[n]);

        mapper->tex[n] = p->tex[n];
    }
    gl->BindTexture(GL_TEXTURE_2D, 0);

    if (va_image->format.fourcc == VA_FOURCC_YV12)
        MPSWAP(struct ra_tex*, mapper->tex[1], mapper->tex[2]);

    return 0;

err:
    if (!p_owner->probing_formats)
        MP_FATAL(mapper, "mapping VAAPI EGL image failed\n");
    return -1;
}

static bool try_format(struct ra_hwdec *hw, struct mp_image *surface)
{
    bool ok = false;
    struct ra_hwdec_mapper *mapper = ra_hwdec_mapper_create(hw, &surface->params);
    if (mapper)
        ok = ra_hwdec_mapper_map(mapper, surface) >= 0;
    ra_hwdec_mapper_free(&mapper);
    return ok;
}

static void determine_working_formats(struct ra_hwdec *hw)
{
    struct priv_owner *p = hw->priv;
    int num_formats = 0;
    int *formats = NULL;

    p->probing_formats = true;

    AVHWFramesConstraints *fc =
            av_hwdevice_get_hwframe_constraints(p->ctx->av_device_ref, NULL);
    if (!fc) {
        MP_WARN(hw, "failed to retrieve libavutil frame constraints\n");
        goto done;
    }
    for (int n = 0; fc->valid_sw_formats[n] != AV_PIX_FMT_NONE; n++) {
        AVBufferRef *fref = NULL;
        struct mp_image *s = NULL;
        AVFrame *frame = NULL;
        fref = av_hwframe_ctx_alloc(p->ctx->av_device_ref);
        if (!fref)
            goto err;
        AVHWFramesContext *fctx = (void *)fref->data;
        fctx->format = AV_PIX_FMT_VAAPI;
        fctx->sw_format = fc->valid_sw_formats[n];
        fctx->width = 128;
        fctx->height = 128;
        if (av_hwframe_ctx_init(fref) < 0)
            goto err;
        frame = av_frame_alloc();
        if (!frame)
            goto err;
        if (av_hwframe_get_buffer(fref, frame, 0) < 0)
            goto err;
        s = mp_image_from_av_frame(frame);
        if (!s || !mp_image_params_valid(&s->params))
            goto err;
        if (try_format(hw, s))
            MP_TARRAY_APPEND(p, formats, num_formats, s->params.hw_subfmt);
    err:
        talloc_free(s);
        av_frame_free(&frame);
        av_buffer_unref(&fref);
    }
    av_hwframe_constraints_free(&fc);

done:
    MP_TARRAY_APPEND(p, formats, num_formats, 0); // terminate it
    p->formats = formats;
    p->probing_formats = false;

    MP_VERBOSE(hw, "Supported formats:\n");
    for (int n = 0; formats[n]; n++)
        MP_VERBOSE(hw, " %s\n", mp_imgfmt_to_name(formats[n]));
}

const struct ra_hwdec_driver ra_hwdec_vaegl = {
    .name = "vaapi-egl",
    .priv_size = sizeof(struct priv_owner),
    .imgfmts = {IMGFMT_VAAPI, 0},
    .init = init,
    .uninit = uninit,
    .mapper = &(const struct ra_hwdec_mapper_driver){
        .priv_size = sizeof(struct priv),
        .init = mapper_init,
        .uninit = mapper_uninit,
        .map = mapper_map,
        .unmap = mapper_unmap,
    },
};