summaryrefslogtreecommitdiffstats
path: root/video/vaapi.c
blob: 8f097539f61ec0be79b617573cf3d0cf1b5e9409 (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
/*
 * 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 <assert.h>

#include "config.h"

#include "vaapi.h"
#include "common/common.h"
#include "common/msg.h"
#include "osdep/threads.h"
#include "mp_image.h"
#include "img_format.h"
#include "mp_image_pool.h"
#include "options/m_config.h"

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

struct vaapi_opts {
    char *path;
};

#define OPT_BASE_STRUCT struct vaapi_opts
const struct m_sub_options vaapi_conf = {
    .opts = (const struct m_option[]) {
        OPT_STRING("device", path, 0),
        {0},
    },
    .defaults = &(const struct vaapi_opts) {
        .path = "/dev/dri/renderD128",
    },
    .size = sizeof(struct vaapi_opts),
};

int va_get_colorspace_flag(enum mp_csp csp)
{
    switch (csp) {
    case MP_CSP_BT_601:         return VA_SRC_BT601;
    case MP_CSP_BT_709:         return VA_SRC_BT709;
    case MP_CSP_SMPTE_240M:     return VA_SRC_SMPTE_240;
    }
    return 0;
}

#if VA_CHECK_VERSION(1, 0, 0)
static void va_message_callback(void *context, const char *msg, int mp_level)
{
    struct mp_vaapi_ctx *res = context;
    mp_msg(res->log, mp_level, "libva: %s", msg);
}

static void va_error_callback(void *context, const char *msg)
{
    va_message_callback(context, msg, MSGL_ERR);
}

static void va_info_callback(void *context, const char *msg)
{
    va_message_callback(context, msg, MSGL_V);
}
#else
// Pre-libva2 VA message callbacks are global and do not have a context
// parameter, so it's impossible to know from which VADisplay they
// originate.  Try to route them to existing mpv/libmpv instances within
// this process.
static pthread_mutex_t va_log_mutex = PTHREAD_MUTEX_INITIALIZER;
static struct mp_vaapi_ctx **va_mpv_clients;
static int num_va_mpv_clients;

static void va_message_callback(const char *msg, int mp_level)
{
    pthread_mutex_lock(&va_log_mutex);

    if (num_va_mpv_clients) {
        struct mp_log *dst = va_mpv_clients[num_va_mpv_clients - 1]->log;
        mp_msg(dst, mp_level, "libva: %s", msg);
    } else {
        // We can't get or call the original libva handler (vaSet... return
        // them, but it might be from some other lib etc.). So just do what
        // libva happened to do at the time of this writing.
        if (mp_level <= MSGL_ERR) {
            fprintf(stderr, "libva error: %s", msg);
        } else {
            fprintf(stderr, "libva info: %s", msg);
        }
    }

    pthread_mutex_unlock(&va_log_mutex);
}

static void va_error_callback(const char *msg)
{
    va_message_callback(msg, MSGL_ERR);
}

static void va_info_callback(const char *msg)
{
    va_message_callback(msg, MSGL_V);
}
#endif

static void free_device_ref(struct AVHWDeviceContext *hwctx)
{
    struct mp_vaapi_ctx *ctx = hwctx->user_opaque;

    if (ctx->display)
        vaTerminate(ctx->display);

    if (ctx->destroy_native_ctx)
        ctx->destroy_native_ctx(ctx->native_ctx);

#if !VA_CHECK_VERSION(1, 0, 0)
    pthread_mutex_lock(&va_log_mutex);
    for (int n = 0; n < num_va_mpv_clients; n++) {
        if (va_mpv_clients[n] == ctx) {
            MP_TARRAY_REMOVE_AT(va_mpv_clients, num_va_mpv_clients, n);
            break;
        }
    }
    if (num_va_mpv_clients == 0)
        TA_FREEP(&va_mpv_clients); // avoid triggering leak detectors
    pthread_mutex_unlock(&va_log_mutex);
#endif

    talloc_free(ctx);
}

struct mp_vaapi_ctx *va_initialize(VADisplay *display, struct mp_log *plog,
                                   bool probing)
{
    AVBufferRef *avref = av_hwdevice_ctx_alloc(AV_HWDEVICE_TYPE_VAAPI);
    if (!avref)
        return NULL;

    AVHWDeviceContext *hwctx = (void *)avref->data;
    AVVAAPIDeviceContext *vactx = hwctx->hwctx;

    struct mp_vaapi_ctx *res = talloc_ptrtype(NULL, res);
    *res = (struct mp_vaapi_ctx) {
        .log = mp_log_new(res, plog, "/vaapi"),
        .display = display,
        .av_device_ref = avref,
        .hwctx = {
            .av_device_ref = avref,
        },
    };

    hwctx->free = free_device_ref;
    hwctx->user_opaque = res;

#if VA_CHECK_VERSION(1, 0, 0)
    vaSetErrorCallback(display, va_error_callback, res);
    vaSetInfoCallback(display,  va_info_callback,  res);
#else
    pthread_mutex_lock(&va_log_mutex);
    MP_TARRAY_APPEND(NULL, va_mpv_clients, num_va_mpv_clients, res);
    pthread_mutex_unlock(&va_log_mutex);

    // Check some random symbol added after message callbacks.
    // VA_MICRO_VERSION wasn't bumped at the time.
#ifdef VA_FOURCC_I010
    vaSetErrorCallback(va_error_callback);
    vaSetInfoCallback(va_info_callback);
#endif
#endif

    int major, minor;
    int status = vaInitialize(display, &major, &minor);
    if (status != VA_STATUS_SUCCESS) {
        if (!probing)
            MP_ERR(res, "Failed to initialize VAAPI: %s\n", vaErrorStr(status));
        goto error;
    }
    MP_VERBOSE(res, "Initialized VAAPI: version %d.%d\n", major, minor);

    vactx->display = res->display;

    if (av_hwdevice_ctx_init(res->av_device_ref) < 0)
        goto error;

    return res;

error:
    res->display = NULL; // do not vaTerminate this
    va_destroy(res);
    return NULL;
}

// Undo va_initialize, and close the VADisplay.
void va_destroy(struct mp_vaapi_ctx *ctx)
{
    if (!ctx)
        return;

    AVBufferRef *ref = ctx->av_device_ref;
    av_buffer_unref(&ref); // frees ctx as well
}

VASurfaceID va_surface_id(struct mp_image *mpi)
{
    return mpi && mpi->imgfmt == IMGFMT_VAAPI ?
        (VASurfaceID)(uintptr_t)mpi->planes[3] : VA_INVALID_ID;
}

static bool is_emulated(struct AVBufferRef *hw_device_ctx)
{
    AVHWDeviceContext *hwctx = (void *)hw_device_ctx->data;
    AVVAAPIDeviceContext *vactx = hwctx->hwctx;

    const char *s = vaQueryVendorString(vactx->display);
    return s && strstr(s, "VDPAU backend");
}


bool va_guess_if_emulated(struct mp_vaapi_ctx *ctx)
{
    return is_emulated(ctx->av_device_ref);
}

struct va_native_display {
    void (*create)(VADisplay **out_display, void **out_native_ctx,
                   const char *path);
    void (*destroy)(void *native_ctx);
};

#if HAVE_VAAPI_X11
#include <X11/Xlib.h>
#include <va/va_x11.h>

static void x11_destroy(void *native_ctx)
{
    XCloseDisplay(native_ctx);
}

static void x11_create(VADisplay **out_display, void **out_native_ctx,
                       const char *path)
{
    void *native_display = XOpenDisplay(NULL);
    if (!native_display)
        return;
    *out_display = vaGetDisplay(native_display);
    if (*out_display) {
        *out_native_ctx = native_display;
    } else {
        XCloseDisplay(native_display);
    }
}

static const struct va_native_display disp_x11 = {
    .create = x11_create,
    .destroy = x11_destroy,
};
#endif

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

struct va_native_display_drm {
    int drm_fd;
};

static void drm_destroy(void *native_ctx)
{
    struct va_native_display_drm *ctx = native_ctx;
    close(ctx->drm_fd);
    talloc_free(ctx);
}

static void drm_create(VADisplay **out_display, void **out_native_ctx,
                       const char *path)
{
    int drm_fd = open(path, O_RDWR);
    if (drm_fd < 0)
        return;

    struct va_native_display_drm *ctx = talloc_ptrtype(NULL, ctx);
    ctx->drm_fd = drm_fd;
    *out_display = vaGetDisplayDRM(drm_fd);
    if (out_display) {
        *out_native_ctx = ctx;
        return;
    }

    close(drm_fd);
    talloc_free(ctx);
}

static const struct va_native_display disp_drm = {
    .create = drm_create,
    .destroy = drm_destroy,
};
#endif

static const struct va_native_display *const native_displays[] = {
#if HAVE_VAAPI_DRM
    &disp_drm,
#endif
#if HAVE_VAAPI_X11
    &disp_x11,
#endif
    NULL
};

static struct AVBufferRef *va_create_standalone(struct mpv_global *global,
        struct mp_log *log, struct hwcontext_create_dev_params *params)
{
    struct AVBufferRef *ret = NULL;
    struct vaapi_opts *opts = mp_get_config_group(NULL, global, &vaapi_conf);

    for (int n = 0; native_displays[n]; n++) {
        VADisplay *display = NULL;
        void *native_ctx = NULL;
        native_displays[n]->create(&display, &native_ctx, opts->path);
        if (display) {
            struct mp_vaapi_ctx *ctx =
                va_initialize(display, log, params->probing);
            if (!ctx) {
                vaTerminate(display);
                native_displays[n]->destroy(native_ctx);
                goto end;
            }
            ctx->native_ctx = native_ctx;
            ctx->destroy_native_ctx = native_displays[n]->destroy;
            ret = ctx->hwctx.av_device_ref;
            goto end;
        }
    }

end:
    talloc_free(opts);
    return ret;
}

const struct hwcontext_fns hwcontext_fns_vaapi = {
    .av_hwdevice_type = AV_HWDEVICE_TYPE_VAAPI,
    .create_dev = va_create_standalone,
    .is_emulated = is_emulated,
};