aboutsummaryrefslogtreecommitdiffstats
path: root/avconv_vdpau.c
blob: 820678e36a4057cf0f3a626da70cd79958e6ab6d (plain) (blame)
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
/*
 * This file is part of Libav.
 *
 * Libav 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.
 *
 * Libav 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 Libav; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

#include <stdint.h>

#include <vdpau/vdpau.h>
#include <vdpau/vdpau_x11.h>

#include <X11/Xlib.h>

#include "avconv.h"

#include "libavcodec/vdpau.h"

#include "libavutil/avassert.h"
#include "libavutil/buffer.h"
#include "libavutil/frame.h"
#include "libavutil/pixfmt.h"

typedef struct VDPAUContext {
    Display *dpy;

    VdpDevice  device;
    VdpDecoder decoder;
    VdpGetProcAddress *get_proc_address;

    VdpGetErrorString                               *get_error_string;
    VdpGetInformationString                         *get_information_string;
    VdpDeviceDestroy                                *device_destroy;
    VdpDecoderCreate                                *decoder_create;
    VdpDecoderDestroy                               *decoder_destroy;
    VdpDecoderRender                                *decoder_render;
    VdpVideoSurfaceCreate                           *video_surface_create;
    VdpVideoSurfaceDestroy                          *video_surface_destroy;
    VdpVideoSurfaceGetBitsYCbCr                     *video_surface_get_bits;
    VdpVideoSurfaceGetParameters                    *video_surface_get_parameters;
    VdpVideoSurfaceQueryGetPutBitsYCbCrCapabilities *video_surface_query;

    AVFrame *tmp_frame;

    enum AVPixelFormat pix_fmt;
    VdpYCbCrFormat vdpau_format;
} VDPAUContext;

static void vdpau_uninit(AVCodecContext *s)
{
    InputStream  *ist = s->opaque;
    VDPAUContext *ctx = ist->hwaccel_ctx;

    ist->hwaccel_uninit        = NULL;
    ist->hwaccel_get_buffer    = NULL;
    ist->hwaccel_retrieve_data = NULL;

    if (ctx->decoder_destroy)
        ctx->decoder_destroy(ctx->decoder);

    if (ctx->device_destroy)
        ctx->device_destroy(ctx->device);

    if (ctx->dpy)
        XCloseDisplay(ctx->dpy);

    av_frame_free(&ctx->tmp_frame);

    av_freep(&ist->hwaccel_ctx);
    av_freep(&s->hwaccel_context);
}

static void vdpau_release_buffer(void *opaque, uint8_t *data)
{
    VdpVideoSurface surface = *(VdpVideoSurface*)data;
    VDPAUContext *ctx = opaque;

    ctx->video_surface_destroy(surface);
    av_freep(&data);
}

static int vdpau_get_buffer(AVCodecContext *s, AVFrame *frame, int flags)
{
    InputStream         *ist = s->opaque;
    VDPAUContext        *ctx = ist->hwaccel_ctx;
    VdpVideoSurface *surface;
    VdpStatus err;

    av_assert0(frame->format == AV_PIX_FMT_VDPAU);

    surface = av_malloc(sizeof(*surface));
    if (!surface)
        return AVERROR(ENOMEM);

    frame->buf[0] = av_buffer_create((uint8_t*)surface, sizeof(*surface),
                                     vdpau_release_buffer, ctx,
                                     AV_BUFFER_FLAG_READONLY);
    if (!frame->buf[0]) {
        av_freep(&surface);
        return AVERROR(ENOMEM);
    }

    // properly we should keep a pool of surfaces instead of creating
    // them anew for each frame, but since we don't care about speed
    // much in this code, we don't bother
    err = ctx->video_surface_create(ctx->device, VDP_CHROMA_TYPE_420,
                                    frame->width, frame->height, surface);
    if (err != VDP_STATUS_OK) {
        av_log(NULL, AV_LOG_ERROR, "Error allocating a VDPAU video surface: %s\n",
               ctx->get_error_string(err));
        av_buffer_unref(&frame->buf[0]);
        return AVERROR_UNKNOWN;
    }

    frame->data[3] = (uint8_t*)(uintptr_t)*surface;

    return 0;
}

static int vdpau_retrieve_data(AVCodecContext *s, AVFrame *frame)
{
    VdpVideoSurface surface = (VdpVideoSurface)(uintptr_t)frame->data[3];
    InputStream        *ist = s->opaque;
    VDPAUContext       *ctx = ist->hwaccel_ctx;
    VdpStatus err;
    int ret, chroma_type;

    err = ctx->video_surface_get_parameters(surface, &chroma_type,
                                            &ctx->tmp_frame->width,
                                            &ctx->tmp_frame->height);
    if (err != VDP_STATUS_OK) {
        av_log(NULL, AV_LOG_ERROR, "Error getting surface parameters: %s\n",
               ctx->get_error_string(err));
        return AVERROR_UNKNOWN;
    }
    ctx->tmp_frame->format = ctx->pix_fmt;

    ret = av_frame_get_buffer(ctx->tmp_frame, 32);
    if (ret < 0)
        return ret;

    ctx->tmp_frame->width  = frame->width;
    ctx->tmp_frame->height = frame->height;

    err = ctx->video_surface_get_bits(surface, ctx->vdpau_format,
                                      (void * const *)ctx->tmp_frame->data,
                                      ctx->tmp_frame->linesize);
    if (err != VDP_STATUS_OK) {
        av_log(NULL, AV_LOG_ERROR, "Error retrieving frame data from VDPAU: %s\n",
               ctx->get_error_string(err));
        ret = AVERROR_UNKNOWN;
        goto fail;
    }

    if (ctx->vdpau_format == VDP_YCBCR_FORMAT_YV12)
        FFSWAP(uint8_t*, ctx->tmp_frame->data[1], ctx->tmp_frame->data[2]);

    ret = av_frame_copy_props(ctx->tmp_frame, frame);
    if (ret < 0)
        goto fail;

    av_frame_unref(frame);
    av_frame_move_ref(frame, ctx->tmp_frame);
    return 0;

fail:
    av_frame_unref(ctx->tmp_frame);
    return ret;
}

static const int vdpau_formats[][2] = {
    { VDP_YCBCR_FORMAT_YV12, AV_PIX_FMT_YUV420P },
    { VDP_YCBCR_FORMAT_NV12, AV_PIX_FMT_NV12 },
    { VDP_YCBCR_FORMAT_YUYV, AV_PIX_FMT_YUYV422 },
    { VDP_YCBCR_FORMAT_UYVY, AV_PIX_FMT_UYVY422 },
};

static int vdpau_alloc(AVCodecContext *s)
{
    InputStream  *ist = s->opaque;
    int loglevel = (ist->hwaccel_id == HWACCEL_AUTO) ? AV_LOG_VERBOSE : AV_LOG_ERROR;
    AVVDPAUContext *vdpau_ctx;
    VDPAUContext *ctx;
    const char *display, *vendor;
    VdpStatus err;
    int i;

    ctx = av_mallocz(sizeof(*ctx));
    if (!ctx)
        return AVERROR(ENOMEM);

    ist->hwaccel_ctx           = ctx;
    ist->hwaccel_uninit        = vdpau_uninit;
    ist->hwaccel_get_buffer    = vdpau_get_buffer;
    ist->hwaccel_retrieve_data = vdpau_retrieve_data;

    ctx->tmp_frame = av_frame_alloc();
    if (!ctx->tmp_frame)
        goto fail;

    ctx->dpy = XOpenDisplay(ist->hwaccel_device);
    if (!ctx->dpy) {
        av_log(NULL, loglevel, "Cannot open the X11 display %s.\n",
               XDisplayName(ist->hwaccel_device));
        goto fail;
    }
    display = XDisplayString(ctx->dpy);

    err = vdp_device_create_x11(ctx->dpy, XDefaultScreen(ctx->dpy), &ctx->device,
                                &ctx->get_proc_address);
    if (err != VDP_STATUS_OK) {
        av_log(NULL, loglevel, "VDPAU device creation on X11 display %s failed.\n",
               display);
        goto fail;
    }

#define GET_CALLBACK(id, result)                                                \
do {                                                                            \
    void *tmp;                                                                  \
    err = ctx->get_proc_address(ctx->device, id, &tmp);                         \
    if (err != VDP_STATUS_OK) {                                                 \
        av_log(NULL, loglevel, "Error getting the " #id " callback.\n");        \
        goto fail;                                                              \
    }                                                                           \
    ctx->result = tmp;                                                          \
} while (0)

    GET_CALLBACK(VDP_FUNC_ID_GET_ERROR_STRING,               get_error_string);
    GET_CALLBACK(VDP_FUNC_ID_GET_INFORMATION_STRING,         get_information_string);
    GET_CALLBACK(VDP_FUNC_ID_DEVICE_DESTROY,                 device_destroy);
    GET_CALLBACK(VDP_FUNC_ID_DECODER_CREATE,                 decoder_create);
    GET_CALLBACK(VDP_FUNC_ID_DECODER_DESTROY,                decoder_destroy);
    GET_CALLBACK(VDP_FUNC_ID_DECODER_RENDER,                 decoder_render);
    GET_CALLBACK(VDP_FUNC_ID_VIDEO_SURFACE_CREATE,           video_surface_create);
    GET_CALLBACK(VDP_FUNC_ID_VIDEO_SURFACE_DESTROY,          video_surface_destroy);
    GET_CALLBACK(VDP_FUNC_ID_VIDEO_SURFACE_GET_BITS_Y_CB_CR, video_surface_get_bits);
    GET_CALLBACK(VDP_FUNC_ID_VIDEO_SURFACE_GET_PARAMETERS,   video_surface_get_parameters);
    GET_CALLBACK(VDP_FUNC_ID_VIDEO_SURFACE_QUERY_GET_PUT_BITS_Y_CB_CR_CAPABILITIES,
                 video_surface_query);

    for (i = 0; i < FF_ARRAY_ELEMS(vdpau_formats); i++) {
        VdpBool supported;
        err = ctx->video_surface_query(ctx->device, VDP_CHROMA_TYPE_420,
                                       vdpau_formats[i][0], &supported);
        if (err != VDP_STATUS_OK) {
            av_log(NULL, loglevel,
                   "Error querying VDPAU surface capabilities: %s\n",
                   ctx->get_error_string(err));
            goto fail;
        }
        if (supported)
            break;
    }
    if (i == FF_ARRAY_ELEMS(vdpau_formats)) {
        av_log(NULL, loglevel,
               "No supported VDPAU format for retrieving the data.\n");
        return AVERROR(EINVAL);
    }
    ctx->vdpau_format = vdpau_formats[i][0];
    ctx->pix_fmt      = vdpau_formats[i][1];

    vdpau_ctx = av_vdpau_alloc_context();
    if (!vdpau_ctx)
        goto fail;
    vdpau_ctx->render = ctx->decoder_render;

    s->hwaccel_context = vdpau_ctx;

    ctx->get_information_string(&vendor);
    av_log(NULL, AV_LOG_VERBOSE, "Using VDPAU -- %s -- on X11 display %s, "
           "to decode input stream #%d:%d.\n", vendor,
           display, ist->file_index, ist->st->index);

    return 0;

fail:
    av_log(NULL, loglevel, "VDPAU init failed for stream #%d:%d.\n",
           ist->file_index, ist->st->index);
    vdpau_uninit(s);
    return AVERROR(EINVAL);
}

int vdpau_init(AVCodecContext *s)
{
    InputStream *ist = s->opaque;
    int loglevel = (ist->hwaccel_id == HWACCEL_AUTO) ? AV_LOG_VERBOSE : AV_LOG_ERROR;
    AVVDPAUContext *vdpau_ctx;
    VDPAUContext *ctx;
    VdpStatus err;
    int profile, ret;

    if (!ist->hwaccel_ctx) {
        ret = vdpau_alloc(s);
        if (ret < 0)
            return ret;
    }
    ctx       = ist->hwaccel_ctx;
    vdpau_ctx = s->hwaccel_context;

    ret = av_vdpau_get_profile(s, &profile);
    if (ret < 0) {
        av_log(NULL, loglevel, "No known VDPAU decoder profile for this stream.\n");
        return AVERROR(EINVAL);
    }

    if (ctx->decoder)
        ctx->decoder_destroy(ctx->decoder);

    err = ctx->decoder_create(ctx->device, profile,
                              s->coded_width, s->coded_height,
                              16, &ctx->decoder);
    if (err != VDP_STATUS_OK) {
        av_log(NULL, loglevel, "Error creating the VDPAU decoder: %s\n",
               ctx->get_error_string(err));
        return AVERROR_UNKNOWN;
    }

    vdpau_ctx->decoder = ctx->decoder;

    ist->hwaccel_get_buffer    = vdpau_get_buffer;
    ist->hwaccel_retrieve_data = vdpau_retrieve_data;

    return 0;
}