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path: root/libavfilter/vf_scale_vaapi.c (plain)
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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 <string.h>
20
21#include <va/va.h>
22#include <va/va_vpp.h>
23
24#include "libavutil/avassert.h"
25#include "libavutil/hwcontext.h"
26#include "libavutil/hwcontext_vaapi.h"
27#include "libavutil/mem.h"
28#include "libavutil/opt.h"
29#include "libavutil/pixdesc.h"
30
31#include "avfilter.h"
32#include "formats.h"
33#include "internal.h"
34#include "scale.h"
35#include "video.h"
36
37typedef struct ScaleVAAPIContext {
38 const AVClass *class;
39
40 AVVAAPIDeviceContext *hwctx;
41 AVBufferRef *device_ref;
42
43 int valid_ids;
44 VAConfigID va_config;
45 VAContextID va_context;
46
47 AVBufferRef *input_frames_ref;
48 AVHWFramesContext *input_frames;
49
50 AVBufferRef *output_frames_ref;
51 AVHWFramesContext *output_frames;
52
53 char *output_format_string;
54 enum AVPixelFormat output_format;
55
56 char *w_expr; // width expression string
57 char *h_expr; // height expression string
58
59 int output_width; // computed width
60 int output_height; // computed height
61} ScaleVAAPIContext;
62
63
64static int scale_vaapi_query_formats(AVFilterContext *avctx)
65{
66 enum AVPixelFormat pix_fmts[] = {
67 AV_PIX_FMT_VAAPI, AV_PIX_FMT_NONE,
68 };
69 int err;
70
71 if ((err = ff_formats_ref(ff_make_format_list(pix_fmts),
72 &avctx->inputs[0]->out_formats)) < 0)
73 return err;
74 if ((err = ff_formats_ref(ff_make_format_list(pix_fmts),
75 &avctx->outputs[0]->in_formats)) < 0)
76 return err;
77
78 return 0;
79}
80
81static int scale_vaapi_pipeline_uninit(ScaleVAAPIContext *ctx)
82{
83 if (ctx->va_context != VA_INVALID_ID) {
84 vaDestroyContext(ctx->hwctx->display, ctx->va_context);
85 ctx->va_context = VA_INVALID_ID;
86 }
87
88 if (ctx->va_config != VA_INVALID_ID) {
89 vaDestroyConfig(ctx->hwctx->display, ctx->va_config);
90 ctx->va_config = VA_INVALID_ID;
91 }
92
93 av_buffer_unref(&ctx->output_frames_ref);
94 av_buffer_unref(&ctx->device_ref);
95 ctx->hwctx = 0;
96
97 return 0;
98}
99
100static int scale_vaapi_config_input(AVFilterLink *inlink)
101{
102 AVFilterContext *avctx = inlink->dst;
103 ScaleVAAPIContext *ctx = avctx->priv;
104
105 scale_vaapi_pipeline_uninit(ctx);
106
107 if (!inlink->hw_frames_ctx) {
108 av_log(avctx, AV_LOG_ERROR, "A hardware frames reference is "
109 "required to associate the processing device.\n");
110 return AVERROR(EINVAL);
111 }
112
113 ctx->input_frames_ref = av_buffer_ref(inlink->hw_frames_ctx);
114 ctx->input_frames = (AVHWFramesContext*)ctx->input_frames_ref->data;
115
116 return 0;
117}
118
119static int scale_vaapi_config_output(AVFilterLink *outlink)
120{
121 AVFilterLink *inlink = outlink->src->inputs[0];
122 AVFilterContext *avctx = outlink->src;
123 ScaleVAAPIContext *ctx = avctx->priv;
124 AVVAAPIHWConfig *hwconfig = NULL;
125 AVHWFramesConstraints *constraints = NULL;
126 AVVAAPIFramesContext *va_frames;
127 VAStatus vas;
128 int err, i;
129
130 scale_vaapi_pipeline_uninit(ctx);
131
132 ctx->device_ref = av_buffer_ref(ctx->input_frames->device_ref);
133 ctx->hwctx = ((AVHWDeviceContext*)ctx->device_ref->data)->hwctx;
134
135 av_assert0(ctx->va_config == VA_INVALID_ID);
136 vas = vaCreateConfig(ctx->hwctx->display, VAProfileNone,
137 VAEntrypointVideoProc, 0, 0, &ctx->va_config);
138 if (vas != VA_STATUS_SUCCESS) {
139 av_log(ctx, AV_LOG_ERROR, "Failed to create processing pipeline "
140 "config: %d (%s).\n", vas, vaErrorStr(vas));
141 err = AVERROR(EIO);
142 goto fail;
143 }
144
145 hwconfig = av_hwdevice_hwconfig_alloc(ctx->device_ref);
146 if (!hwconfig) {
147 err = AVERROR(ENOMEM);
148 goto fail;
149 }
150 hwconfig->config_id = ctx->va_config;
151
152 constraints = av_hwdevice_get_hwframe_constraints(ctx->device_ref,
153 hwconfig);
154 if (!constraints) {
155 err = AVERROR(ENOMEM);
156 goto fail;
157 }
158
159 if (ctx->output_format == AV_PIX_FMT_NONE)
160 ctx->output_format = ctx->input_frames->sw_format;
161 if (constraints->valid_sw_formats) {
162 for (i = 0; constraints->valid_sw_formats[i] != AV_PIX_FMT_NONE; i++) {
163 if (ctx->output_format == constraints->valid_sw_formats[i])
164 break;
165 }
166 if (constraints->valid_sw_formats[i] == AV_PIX_FMT_NONE) {
167 av_log(ctx, AV_LOG_ERROR, "Hardware does not support output "
168 "format %s.\n", av_get_pix_fmt_name(ctx->output_format));
169 err = AVERROR(EINVAL);
170 goto fail;
171 }
172 }
173
174 if ((err = ff_scale_eval_dimensions(ctx,
175 ctx->w_expr, ctx->h_expr,
176 inlink, outlink,
177 &ctx->output_width, &ctx->output_height)) < 0)
178 goto fail;
179
180 if (ctx->output_width < constraints->min_width ||
181 ctx->output_height < constraints->min_height ||
182 ctx->output_width > constraints->max_width ||
183 ctx->output_height > constraints->max_height) {
184 av_log(ctx, AV_LOG_ERROR, "Hardware does not support scaling to "
185 "size %dx%d (constraints: width %d-%d height %d-%d).\n",
186 ctx->output_width, ctx->output_height,
187 constraints->min_width, constraints->max_width,
188 constraints->min_height, constraints->max_height);
189 err = AVERROR(EINVAL);
190 goto fail;
191 }
192
193 ctx->output_frames_ref = av_hwframe_ctx_alloc(ctx->device_ref);
194 if (!ctx->output_frames_ref) {
195 av_log(ctx, AV_LOG_ERROR, "Failed to create HW frame context "
196 "for output.\n");
197 err = AVERROR(ENOMEM);
198 goto fail;
199 }
200
201 ctx->output_frames = (AVHWFramesContext*)ctx->output_frames_ref->data;
202
203 ctx->output_frames->format = AV_PIX_FMT_VAAPI;
204 ctx->output_frames->sw_format = ctx->output_format;
205 ctx->output_frames->width = ctx->output_width;
206 ctx->output_frames->height = ctx->output_height;
207
208 // The number of output frames we need is determined by what follows
209 // the filter. If it's an encoder with complex frame reference
210 // structures then this could be very high.
211 ctx->output_frames->initial_pool_size = 10;
212
213 err = av_hwframe_ctx_init(ctx->output_frames_ref);
214 if (err < 0) {
215 av_log(ctx, AV_LOG_ERROR, "Failed to initialise VAAPI frame "
216 "context for output: %d\n", err);
217 goto fail;
218 }
219
220 va_frames = ctx->output_frames->hwctx;
221
222 av_assert0(ctx->va_context == VA_INVALID_ID);
223 vas = vaCreateContext(ctx->hwctx->display, ctx->va_config,
224 ctx->output_width, ctx->output_height,
225 VA_PROGRESSIVE,
226 va_frames->surface_ids, va_frames->nb_surfaces,
227 &ctx->va_context);
228 if (vas != VA_STATUS_SUCCESS) {
229 av_log(ctx, AV_LOG_ERROR, "Failed to create processing pipeline "
230 "context: %d (%s).\n", vas, vaErrorStr(vas));
231 return AVERROR(EIO);
232 }
233
234 outlink->w = ctx->output_width;
235 outlink->h = ctx->output_height;
236
237 outlink->hw_frames_ctx = av_buffer_ref(ctx->output_frames_ref);
238 if (!outlink->hw_frames_ctx) {
239 err = AVERROR(ENOMEM);
240 goto fail;
241 }
242
243 av_freep(&hwconfig);
244 av_hwframe_constraints_free(&constraints);
245 return 0;
246
247fail:
248 av_buffer_unref(&ctx->output_frames_ref);
249 av_freep(&hwconfig);
250 av_hwframe_constraints_free(&constraints);
251 return err;
252}
253
254static int vaapi_proc_colour_standard(enum AVColorSpace av_cs)
255{
256 switch(av_cs) {
257#define CS(av, va) case AVCOL_SPC_ ## av: return VAProcColorStandard ## va;
258 CS(BT709, BT709);
259 CS(BT470BG, BT601);
260 CS(SMPTE170M, SMPTE170M);
261 CS(SMPTE240M, SMPTE240M);
262#undef CS
263 default:
264 return VAProcColorStandardNone;
265 }
266}
267
268static int scale_vaapi_filter_frame(AVFilterLink *inlink, AVFrame *input_frame)
269{
270 AVFilterContext *avctx = inlink->dst;
271 AVFilterLink *outlink = avctx->outputs[0];
272 ScaleVAAPIContext *ctx = avctx->priv;
273 AVFrame *output_frame = NULL;
274 VASurfaceID input_surface, output_surface;
275 VAProcPipelineParameterBuffer params;
276 VABufferID params_id;
277 VARectangle input_region;
278 VAStatus vas;
279 int err;
280
281 av_log(ctx, AV_LOG_DEBUG, "Filter input: %s, %ux%u (%"PRId64").\n",
282 av_get_pix_fmt_name(input_frame->format),
283 input_frame->width, input_frame->height, input_frame->pts);
284
285 if (ctx->va_context == VA_INVALID_ID)
286 return AVERROR(EINVAL);
287
288 input_surface = (VASurfaceID)(uintptr_t)input_frame->data[3];
289 av_log(ctx, AV_LOG_DEBUG, "Using surface %#x for scale input.\n",
290 input_surface);
291
292 output_frame = ff_get_video_buffer(outlink, ctx->output_width,
293 ctx->output_height);
294 if (!output_frame) {
295 err = AVERROR(ENOMEM);
296 goto fail;
297 }
298
299 output_surface = (VASurfaceID)(uintptr_t)output_frame->data[3];
300 av_log(ctx, AV_LOG_DEBUG, "Using surface %#x for scale output.\n",
301 output_surface);
302
303 memset(&params, 0, sizeof(params));
304
305 // If there were top/left cropping, it could be taken into
306 // account here.
307 input_region = (VARectangle) {
308 .x = 0,
309 .y = 0,
310 .width = input_frame->width,
311 .height = input_frame->height,
312 };
313
314 params.surface = input_surface;
315 params.surface_region = &input_region;
316 params.surface_color_standard =
317 vaapi_proc_colour_standard(input_frame->colorspace);
318
319 params.output_region = 0;
320 params.output_background_color = 0xff000000;
321 params.output_color_standard = params.surface_color_standard;
322
323 params.pipeline_flags = 0;
324 params.filter_flags = VA_FILTER_SCALING_HQ;
325
326 vas = vaBeginPicture(ctx->hwctx->display,
327 ctx->va_context, output_surface);
328 if (vas != VA_STATUS_SUCCESS) {
329 av_log(ctx, AV_LOG_ERROR, "Failed to attach new picture: "
330 "%d (%s).\n", vas, vaErrorStr(vas));
331 err = AVERROR(EIO);
332 goto fail;
333 }
334
335 vas = vaCreateBuffer(ctx->hwctx->display, ctx->va_context,
336 VAProcPipelineParameterBufferType,
337 sizeof(params), 1, &params, &params_id);
338 if (vas != VA_STATUS_SUCCESS) {
339 av_log(ctx, AV_LOG_ERROR, "Failed to create parameter buffer: "
340 "%d (%s).\n", vas, vaErrorStr(vas));
341 err = AVERROR(EIO);
342 goto fail_after_begin;
343 }
344 av_log(ctx, AV_LOG_DEBUG, "Pipeline parameter buffer is %#x.\n",
345 params_id);
346
347 vas = vaRenderPicture(ctx->hwctx->display, ctx->va_context,
348 &params_id, 1);
349 if (vas != VA_STATUS_SUCCESS) {
350 av_log(ctx, AV_LOG_ERROR, "Failed to render parameter buffer: "
351 "%d (%s).\n", vas, vaErrorStr(vas));
352 err = AVERROR(EIO);
353 goto fail_after_begin;
354 }
355
356 vas = vaEndPicture(ctx->hwctx->display, ctx->va_context);
357 if (vas != VA_STATUS_SUCCESS) {
358 av_log(ctx, AV_LOG_ERROR, "Failed to start picture processing: "
359 "%d (%s).\n", vas, vaErrorStr(vas));
360 err = AVERROR(EIO);
361 goto fail_after_render;
362 }
363
364 if (ctx->hwctx->driver_quirks &
365 AV_VAAPI_DRIVER_QUIRK_RENDER_PARAM_BUFFERS) {
366 vas = vaDestroyBuffer(ctx->hwctx->display, params_id);
367 if (vas != VA_STATUS_SUCCESS) {
368 av_log(ctx, AV_LOG_ERROR, "Failed to free parameter buffer: "
369 "%d (%s).\n", vas, vaErrorStr(vas));
370 // And ignore.
371 }
372 }
373
374 av_frame_copy_props(output_frame, input_frame);
375 av_frame_free(&input_frame);
376
377 av_log(ctx, AV_LOG_DEBUG, "Filter output: %s, %ux%u (%"PRId64").\n",
378 av_get_pix_fmt_name(output_frame->format),
379 output_frame->width, output_frame->height, output_frame->pts);
380
381 return ff_filter_frame(outlink, output_frame);
382
383 // We want to make sure that if vaBeginPicture has been called, we also
384 // call vaRenderPicture and vaEndPicture. These calls may well fail or
385 // do something else nasty, but once we're in this failure case there
386 // isn't much else we can do.
387fail_after_begin:
388 vaRenderPicture(ctx->hwctx->display, ctx->va_context, &params_id, 1);
389fail_after_render:
390 vaEndPicture(ctx->hwctx->display, ctx->va_context);
391fail:
392 av_frame_free(&input_frame);
393 av_frame_free(&output_frame);
394 return err;
395}
396
397static av_cold int scale_vaapi_init(AVFilterContext *avctx)
398{
399 ScaleVAAPIContext *ctx = avctx->priv;
400
401 ctx->va_config = VA_INVALID_ID;
402 ctx->va_context = VA_INVALID_ID;
403 ctx->valid_ids = 1;
404
405 if (ctx->output_format_string) {
406 ctx->output_format = av_get_pix_fmt(ctx->output_format_string);
407 if (ctx->output_format == AV_PIX_FMT_NONE) {
408 av_log(ctx, AV_LOG_ERROR, "Invalid output format.\n");
409 return AVERROR(EINVAL);
410 }
411 } else {
412 // Use the input format once that is configured.
413 ctx->output_format = AV_PIX_FMT_NONE;
414 }
415
416 return 0;
417}
418
419static av_cold void scale_vaapi_uninit(AVFilterContext *avctx)
420{
421 ScaleVAAPIContext *ctx = avctx->priv;
422
423 if (ctx->valid_ids)
424 scale_vaapi_pipeline_uninit(ctx);
425
426 av_buffer_unref(&ctx->input_frames_ref);
427 av_buffer_unref(&ctx->output_frames_ref);
428 av_buffer_unref(&ctx->device_ref);
429}
430
431
432#define OFFSET(x) offsetof(ScaleVAAPIContext, x)
433#define FLAGS (AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM)
434static const AVOption scale_vaapi_options[] = {
435 { "w", "Output video width",
436 OFFSET(w_expr), AV_OPT_TYPE_STRING, {.str = "iw"}, .flags = FLAGS },
437 { "h", "Output video height",
438 OFFSET(h_expr), AV_OPT_TYPE_STRING, {.str = "ih"}, .flags = FLAGS },
439 { "format", "Output video format (software format of hardware frames)",
440 OFFSET(output_format_string), AV_OPT_TYPE_STRING, .flags = FLAGS },
441 { NULL },
442};
443
444static const AVClass scale_vaapi_class = {
445 .class_name = "scale_vaapi",
446 .item_name = av_default_item_name,
447 .option = scale_vaapi_options,
448 .version = LIBAVUTIL_VERSION_INT,
449};
450
451static const AVFilterPad scale_vaapi_inputs[] = {
452 {
453 .name = "default",
454 .type = AVMEDIA_TYPE_VIDEO,
455 .filter_frame = &scale_vaapi_filter_frame,
456 .config_props = &scale_vaapi_config_input,
457 },
458 { NULL }
459};
460
461static const AVFilterPad scale_vaapi_outputs[] = {
462 {
463 .name = "default",
464 .type = AVMEDIA_TYPE_VIDEO,
465 .config_props = &scale_vaapi_config_output,
466 },
467 { NULL }
468};
469
470AVFilter ff_vf_scale_vaapi = {
471 .name = "scale_vaapi",
472 .description = NULL_IF_CONFIG_SMALL("Scale to/from VAAPI surfaces."),
473 .priv_size = sizeof(ScaleVAAPIContext),
474 .init = &scale_vaapi_init,
475 .uninit = &scale_vaapi_uninit,
476 .query_formats = &scale_vaapi_query_formats,
477 .inputs = scale_vaapi_inputs,
478 .outputs = scale_vaapi_outputs,
479 .priv_class = &scale_vaapi_class,
480 .flags_internal = FF_FILTER_FLAG_HWFRAME_AWARE,
481};
482
generated by cgit at 2024-05-17 06:57:51 (GMT)