Merge remote-tracking branch 'cigaes/master'
[ffmpeg.git] / ffmpeg_vdpau.c
1 /*
2  * This file is part of FFmpeg.
3  *
4  * FFmpeg is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU Lesser General Public
6  * License as published by the Free Software Foundation; either
7  * version 2.1 of the License, or (at your option) any later version.
8  *
9  * FFmpeg is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
12  * Lesser General Public License for more details.
13  *
14  * You should have received a copy of the GNU Lesser General Public
15  * License along with FFmpeg; if not, write to the Free Software
16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17  */
18
19 #include <stdint.h>
20
21 #include <vdpau/vdpau.h>
22 #include <vdpau/vdpau_x11.h>
23
24 #include <X11/Xlib.h>
25
26 #include "ffmpeg.h"
27
28 #include "libavcodec/vdpau.h"
29
30 #include "libavutil/avassert.h"
31 #include "libavutil/buffer.h"
32 #include "libavutil/frame.h"
33 #include "libavutil/pixfmt.h"
34
35 typedef struct VDPAUContext {
36     Display *dpy;
37
38     VdpDevice  device;
39     VdpDecoder decoder;
40     VdpGetProcAddress *get_proc_address;
41
42     VdpGetErrorString                               *get_error_string;
43     VdpGetInformationString                         *get_information_string;
44     VdpDeviceDestroy                                *device_destroy;
45 #if 1 // for ffmpegs older vdpau API, not the oldest though
46     VdpDecoderCreate                                *decoder_create;
47     VdpDecoderDestroy                               *decoder_destroy;
48     VdpDecoderRender                                *decoder_render;
49 #endif
50     VdpVideoSurfaceCreate                           *video_surface_create;
51     VdpVideoSurfaceDestroy                          *video_surface_destroy;
52     VdpVideoSurfaceGetBitsYCbCr                     *video_surface_get_bits;
53     VdpVideoSurfaceGetParameters                    *video_surface_get_parameters;
54     VdpVideoSurfaceQueryGetPutBitsYCbCrCapabilities *video_surface_query;
55
56     AVFrame *tmp_frame;
57
58     enum AVPixelFormat pix_fmt;
59     VdpYCbCrFormat vdpau_format;
60 } VDPAUContext;
61
62 int vdpau_api_ver = 2;
63
64 static void vdpau_uninit(AVCodecContext *s)
65 {
66     InputStream  *ist = s->opaque;
67     VDPAUContext *ctx = ist->hwaccel_ctx;
68
69     ist->hwaccel_uninit        = NULL;
70     ist->hwaccel_get_buffer    = NULL;
71     ist->hwaccel_retrieve_data = NULL;
72
73     if (ctx->decoder_destroy)
74         ctx->decoder_destroy(ctx->decoder);
75
76     if (ctx->device_destroy)
77         ctx->device_destroy(ctx->device);
78
79     if (ctx->dpy)
80         XCloseDisplay(ctx->dpy);
81
82     av_frame_free(&ctx->tmp_frame);
83
84     av_freep(&ist->hwaccel_ctx);
85     av_freep(&s->hwaccel_context);
86 }
87
88 static void vdpau_release_buffer(void *opaque, uint8_t *data)
89 {
90     VdpVideoSurface surface = *(VdpVideoSurface*)data;
91     VDPAUContext *ctx = opaque;
92
93     ctx->video_surface_destroy(surface);
94     av_freep(&data);
95 }
96
97 static int vdpau_get_buffer(AVCodecContext *s, AVFrame *frame, int flags)
98 {
99     InputStream         *ist = s->opaque;
100     VDPAUContext        *ctx = ist->hwaccel_ctx;
101     VdpVideoSurface *surface;
102     VdpStatus err;
103
104     av_assert0(frame->format == AV_PIX_FMT_VDPAU);
105
106     surface = av_malloc(sizeof(*surface));
107     if (!surface)
108         return AVERROR(ENOMEM);
109
110     frame->buf[0] = av_buffer_create((uint8_t*)surface, sizeof(*surface),
111                                      vdpau_release_buffer, ctx,
112                                      AV_BUFFER_FLAG_READONLY);
113     if (!frame->buf[0]) {
114         av_freep(&surface);
115         return AVERROR(ENOMEM);
116     }
117
118     // properly we should keep a pool of surfaces instead of creating
119     // them anew for each frame, but since we don't care about speed
120     // much in this code, we don't bother
121     err = ctx->video_surface_create(ctx->device, VDP_CHROMA_TYPE_420,
122                                     frame->width, frame->height, surface);
123     if (err != VDP_STATUS_OK) {
124         av_log(NULL, AV_LOG_ERROR, "Error allocating a VDPAU video surface: %s\n",
125                ctx->get_error_string(err));
126         av_buffer_unref(&frame->buf[0]);
127         return AVERROR_UNKNOWN;
128     }
129
130     frame->data[3] = (uint8_t*)(uintptr_t)*surface;
131
132     return 0;
133 }
134
135 static int vdpau_retrieve_data(AVCodecContext *s, AVFrame *frame)
136 {
137     VdpVideoSurface surface = (VdpVideoSurface)(uintptr_t)frame->data[3];
138     InputStream        *ist = s->opaque;
139     VDPAUContext       *ctx = ist->hwaccel_ctx;
140     VdpStatus err;
141     int ret, chroma_type;
142
143     err = ctx->video_surface_get_parameters(surface, &chroma_type,
144                                             &ctx->tmp_frame->width,
145                                             &ctx->tmp_frame->height);
146     if (err != VDP_STATUS_OK) {
147         av_log(NULL, AV_LOG_ERROR, "Error getting surface parameters: %s\n",
148                ctx->get_error_string(err));
149         return AVERROR_UNKNOWN;
150     }
151     ctx->tmp_frame->format = ctx->pix_fmt;
152
153     ret = av_frame_get_buffer(ctx->tmp_frame, 32);
154     if (ret < 0)
155         return ret;
156
157     ctx->tmp_frame->width  = frame->width;
158     ctx->tmp_frame->height = frame->height;
159
160     err = ctx->video_surface_get_bits(surface, ctx->vdpau_format,
161                                       (void * const *)ctx->tmp_frame->data,
162                                       ctx->tmp_frame->linesize);
163     if (err != VDP_STATUS_OK) {
164         av_log(NULL, AV_LOG_ERROR, "Error retrieving frame data from VDPAU: %s\n",
165                ctx->get_error_string(err));
166         ret = AVERROR_UNKNOWN;
167         goto fail;
168     }
169
170     if (ctx->vdpau_format == VDP_YCBCR_FORMAT_YV12)
171         FFSWAP(uint8_t*, ctx->tmp_frame->data[1], ctx->tmp_frame->data[2]);
172
173     ret = av_frame_copy_props(ctx->tmp_frame, frame);
174     if (ret < 0)
175         goto fail;
176
177     av_frame_unref(frame);
178     av_frame_move_ref(frame, ctx->tmp_frame);
179     return 0;
180
181 fail:
182     av_frame_unref(ctx->tmp_frame);
183     return ret;
184 }
185
186 static const int vdpau_formats[][2] = {
187     { VDP_YCBCR_FORMAT_YV12, AV_PIX_FMT_YUV420P },
188     { VDP_YCBCR_FORMAT_NV12, AV_PIX_FMT_NV12 },
189     { VDP_YCBCR_FORMAT_YUYV, AV_PIX_FMT_YUYV422 },
190     { VDP_YCBCR_FORMAT_UYVY, AV_PIX_FMT_UYVY422 },
191 };
192
193 static int vdpau_alloc(AVCodecContext *s)
194 {
195     InputStream  *ist = s->opaque;
196     int loglevel = (ist->hwaccel_id == HWACCEL_AUTO) ? AV_LOG_VERBOSE : AV_LOG_ERROR;
197     AVVDPAUContext *vdpau_ctx;
198     VDPAUContext *ctx;
199     const char *display, *vendor;
200     VdpStatus err;
201     int i;
202
203     ctx = av_mallocz(sizeof(*ctx));
204     if (!ctx)
205         return AVERROR(ENOMEM);
206
207     ist->hwaccel_ctx           = ctx;
208     ist->hwaccel_uninit        = vdpau_uninit;
209     ist->hwaccel_get_buffer    = vdpau_get_buffer;
210     ist->hwaccel_retrieve_data = vdpau_retrieve_data;
211
212     ctx->tmp_frame = av_frame_alloc();
213     if (!ctx->tmp_frame)
214         goto fail;
215
216     ctx->dpy = XOpenDisplay(ist->hwaccel_device);
217     if (!ctx->dpy) {
218         av_log(NULL, loglevel, "Cannot open the X11 display %s.\n",
219                XDisplayName(ist->hwaccel_device));
220         goto fail;
221     }
222     display = XDisplayString(ctx->dpy);
223
224     err = vdp_device_create_x11(ctx->dpy, XDefaultScreen(ctx->dpy), &ctx->device,
225                                 &ctx->get_proc_address);
226     if (err != VDP_STATUS_OK) {
227         av_log(NULL, loglevel, "VDPAU device creation on X11 display %s failed.\n",
228                display);
229         goto fail;
230     }
231
232 #define GET_CALLBACK(id, result)                                                \
233 do {                                                                            \
234     void *tmp;                                                                  \
235     err = ctx->get_proc_address(ctx->device, id, &tmp);                         \
236     if (err != VDP_STATUS_OK) {                                                 \
237         av_log(NULL, loglevel, "Error getting the " #id " callback.\n");        \
238         goto fail;                                                              \
239     }                                                                           \
240     ctx->result = tmp;                                                          \
241 } while (0)
242
243     GET_CALLBACK(VDP_FUNC_ID_GET_ERROR_STRING,               get_error_string);
244     GET_CALLBACK(VDP_FUNC_ID_GET_INFORMATION_STRING,         get_information_string);
245     GET_CALLBACK(VDP_FUNC_ID_DEVICE_DESTROY,                 device_destroy);
246     if (vdpau_api_ver == 1) {
247         GET_CALLBACK(VDP_FUNC_ID_DECODER_CREATE,                 decoder_create);
248         GET_CALLBACK(VDP_FUNC_ID_DECODER_DESTROY,                decoder_destroy);
249         GET_CALLBACK(VDP_FUNC_ID_DECODER_RENDER,                 decoder_render);
250     }
251     GET_CALLBACK(VDP_FUNC_ID_VIDEO_SURFACE_CREATE,           video_surface_create);
252     GET_CALLBACK(VDP_FUNC_ID_VIDEO_SURFACE_DESTROY,          video_surface_destroy);
253     GET_CALLBACK(VDP_FUNC_ID_VIDEO_SURFACE_GET_BITS_Y_CB_CR, video_surface_get_bits);
254     GET_CALLBACK(VDP_FUNC_ID_VIDEO_SURFACE_GET_PARAMETERS,   video_surface_get_parameters);
255     GET_CALLBACK(VDP_FUNC_ID_VIDEO_SURFACE_QUERY_GET_PUT_BITS_Y_CB_CR_CAPABILITIES,
256                  video_surface_query);
257
258     for (i = 0; i < FF_ARRAY_ELEMS(vdpau_formats); i++) {
259         VdpBool supported;
260         err = ctx->video_surface_query(ctx->device, VDP_CHROMA_TYPE_420,
261                                        vdpau_formats[i][0], &supported);
262         if (err != VDP_STATUS_OK) {
263             av_log(NULL, loglevel,
264                    "Error querying VDPAU surface capabilities: %s\n",
265                    ctx->get_error_string(err));
266             goto fail;
267         }
268         if (supported)
269             break;
270     }
271     if (i == FF_ARRAY_ELEMS(vdpau_formats)) {
272         av_log(NULL, loglevel,
273                "No supported VDPAU format for retrieving the data.\n");
274         return AVERROR(EINVAL);
275     }
276     ctx->vdpau_format = vdpau_formats[i][0];
277     ctx->pix_fmt      = vdpau_formats[i][1];
278
279     if (vdpau_api_ver == 1) {
280         vdpau_ctx = av_vdpau_alloc_context();
281         if (!vdpau_ctx)
282             goto fail;
283         vdpau_ctx->render = ctx->decoder_render;
284
285         s->hwaccel_context = vdpau_ctx;
286     } else
287     if (av_vdpau_bind_context(s, ctx->device, ctx->get_proc_address, 0))
288         goto fail;
289
290     ctx->get_information_string(&vendor);
291     av_log(NULL, AV_LOG_VERBOSE, "Using VDPAU -- %s -- on X11 display %s, "
292            "to decode input stream #%d:%d.\n", vendor,
293            display, ist->file_index, ist->st->index);
294
295     return 0;
296
297 fail:
298     av_log(NULL, loglevel, "VDPAU init failed for stream #%d:%d.\n",
299            ist->file_index, ist->st->index);
300     vdpau_uninit(s);
301     return AVERROR(EINVAL);
302 }
303
304 static int vdpau_old_init(AVCodecContext *s)
305 {
306     InputStream *ist = s->opaque;
307     int loglevel = (ist->hwaccel_id == HWACCEL_AUTO) ? AV_LOG_VERBOSE : AV_LOG_ERROR;
308     AVVDPAUContext *vdpau_ctx;
309     VDPAUContext *ctx;
310     VdpStatus err;
311     int profile, ret;
312
313     if (!ist->hwaccel_ctx) {
314         ret = vdpau_alloc(s);
315         if (ret < 0)
316             return ret;
317     }
318     ctx       = ist->hwaccel_ctx;
319     vdpau_ctx = s->hwaccel_context;
320
321     ret = av_vdpau_get_profile(s, &profile);
322     if (ret < 0) {
323         av_log(NULL, loglevel, "No known VDPAU decoder profile for this stream.\n");
324         return AVERROR(EINVAL);
325     }
326
327     if (ctx->decoder)
328         ctx->decoder_destroy(ctx->decoder);
329
330     err = ctx->decoder_create(ctx->device, profile,
331                               s->coded_width, s->coded_height,
332                               16, &ctx->decoder);
333     if (err != VDP_STATUS_OK) {
334         av_log(NULL, loglevel, "Error creating the VDPAU decoder: %s\n",
335                ctx->get_error_string(err));
336         return AVERROR_UNKNOWN;
337     }
338
339     vdpau_ctx->decoder = ctx->decoder;
340
341     ist->hwaccel_get_buffer    = vdpau_get_buffer;
342     ist->hwaccel_retrieve_data = vdpau_retrieve_data;
343
344     return 0;
345 }
346
347 int vdpau_init(AVCodecContext *s)
348 {
349     InputStream *ist = s->opaque;
350
351     if (vdpau_api_ver == 1)
352         return vdpau_old_init(s);
353
354     if (!ist->hwaccel_ctx) {
355         int ret = vdpau_alloc(s);
356         if (ret < 0)
357             return ret;
358     }
359
360     ist->hwaccel_get_buffer    = vdpau_get_buffer;
361     ist->hwaccel_retrieve_data = vdpau_retrieve_data;
362
363     return 0;
364 }