libavfilter/vf_scale_vaapi.c

   1 /*
   2  * This file is part of Libav.
   3  *
   4  * Libav 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  * Libav 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 Libav; 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 "video.h"
  35
  36 typedef struct ScaleVAAPIContext {
  37     const AVClass *class;
  38
  39     AVVAAPIDeviceContext *hwctx;
  40     AVBufferRef *device_ref;
  41
  42     int valid_ids;
  43     VAConfigID  va_config;
  44     VAContextID va_context;
  45
  46     AVBufferRef       *input_frames_ref;
  47     AVHWFramesContext *input_frames;
  48
  49     AVBufferRef       *output_frames_ref;
  50     AVHWFramesContext *output_frames;
  51
  52     char *output_format_string;
  53     enum AVPixelFormat output_format;
  54     int output_width;
  55     int output_height;
  56
  57 } ScaleVAAPIContext;
  58
  59
  60 static int scale_vaapi_query_formats(AVFilterContext *avctx)
  61 {
  62     enum AVPixelFormat pix_fmts[] = {
  63         AV_PIX_FMT_VAAPI, AV_PIX_FMT_NONE,
  64     };
  65
  66     ff_formats_ref(ff_make_format_list(pix_fmts),
  67                    &avctx->inputs[0]->out_formats);
  68     ff_formats_ref(ff_make_format_list(pix_fmts),
  69                    &avctx->outputs[0]->in_formats);
  70
  71     return 0;
  72 }
  73
  74 static int scale_vaapi_pipeline_uninit(ScaleVAAPIContext *ctx)
  75 {
  76     if (ctx->va_context != VA_INVALID_ID) {
  77         vaDestroyContext(ctx->hwctx->display, ctx->va_context);
  78         ctx->va_context = VA_INVALID_ID;
  79     }
  80
  81     if (ctx->va_config != VA_INVALID_ID) {
  82         vaDestroyConfig(ctx->hwctx->display, ctx->va_config);
  83         ctx->va_config = VA_INVALID_ID;
  84     }
  85
  86     av_buffer_unref(&ctx->output_frames_ref);
  87     av_buffer_unref(&ctx->device_ref);
  88     ctx->hwctx = 0;
  89
  90     return 0;
  91 }
  92
  93 static int scale_vaapi_config_input(AVFilterLink *inlink)
  94 {
  95     AVFilterContext *avctx = inlink->dst;
  96     ScaleVAAPIContext *ctx = avctx->priv;
  97
  98     scale_vaapi_pipeline_uninit(ctx);
  99
 100     if (!inlink->hw_frames_ctx) {
 101         av_log(avctx, AV_LOG_ERROR, "A hardware frames reference is "
 102                "required to associate the processing device.\n");
 103         return AVERROR(EINVAL);
 104     }
 105
 106     ctx->input_frames_ref = av_buffer_ref(inlink->hw_frames_ctx);
 107     ctx->input_frames = (AVHWFramesContext*)ctx->input_frames_ref->data;
 108
 109     return 0;
 110 }
 111
 112 static int scale_vaapi_config_output(AVFilterLink *outlink)
 113 {
 114     AVFilterContext *avctx = outlink->src;
 115     ScaleVAAPIContext *ctx = avctx->priv;
 116     AVVAAPIHWConfig *hwconfig = NULL;
 117     AVHWFramesConstraints *constraints = NULL;
 118     AVVAAPIFramesContext *va_frames;
 119     VAStatus vas;
 120     int err, i;
 121
 122     scale_vaapi_pipeline_uninit(ctx);
 123
 124     ctx->device_ref = av_buffer_ref(ctx->input_frames->device_ref);
 125     ctx->hwctx = ((AVHWDeviceContext*)ctx->device_ref->data)->hwctx;
 126
 127     av_assert0(ctx->va_config == VA_INVALID_ID);
 128     vas = vaCreateConfig(ctx->hwctx->display, VAProfileNone,
 129                          VAEntrypointVideoProc, 0, 0, &ctx->va_config);
 130     if (vas != VA_STATUS_SUCCESS) {
 131         av_log(ctx, AV_LOG_ERROR, "Failed to create processing pipeline "
 132                "config: %d (%s).\n", vas, vaErrorStr(vas));
 133         err = AVERROR(EIO);
 134         goto fail;
 135     }
 136
 137     hwconfig = av_hwdevice_hwconfig_alloc(ctx->device_ref);
 138     if (!hwconfig) {
 139         err = AVERROR(ENOMEM);
 140         goto fail;
 141     }
 142     hwconfig->config_id = ctx->va_config;
 143
 144     constraints = av_hwdevice_get_hwframe_constraints(ctx->device_ref,
 145                                                       hwconfig);
 146     if (!constraints) {
 147         err = AVERROR(ENOMEM);
 148         goto fail;
 149     }
 150
 151     if (ctx->output_format == AV_PIX_FMT_NONE)
 152         ctx->output_format = ctx->input_frames->sw_format;
 153     if (constraints->valid_sw_formats) {
 154         for (i = 0; constraints->valid_sw_formats[i] != AV_PIX_FMT_NONE; i++) {
 155             if (ctx->output_format == constraints->valid_sw_formats[i])
 156                 break;
 157         }
 158         if (constraints->valid_sw_formats[i] == AV_PIX_FMT_NONE) {
 159             av_log(ctx, AV_LOG_ERROR, "Hardware does not support output "
 160                    "format %s.\n", av_get_pix_fmt_name(ctx->output_format));
 161             err = AVERROR(EINVAL);
 162             goto fail;
 163         }
 164     }
 165
 166     if (ctx->output_width  < constraints->min_width  ||
 167         ctx->output_height < constraints->min_height ||
 168         ctx->output_width  > constraints->max_width  ||
 169         ctx->output_height > constraints->max_height) {
 170         av_log(ctx, AV_LOG_ERROR, "Hardware does not support scaling to "
 171                "size %dx%d (constraints: width %d-%d height %d-%d).\n",
 172                ctx->output_width, ctx->output_height,
 173                constraints->min_width,  constraints->max_width,
 174                constraints->min_height, constraints->max_height);
 175         err = AVERROR(EINVAL);
 176         goto fail;
 177     }
 178
 179     ctx->output_frames_ref = av_hwframe_ctx_alloc(ctx->device_ref);
 180     if (!ctx->output_frames_ref) {
 181         av_log(ctx, AV_LOG_ERROR, "Failed to create HW frame context "
 182                "for output.\n");
 183         err = AVERROR(ENOMEM);
 184         goto fail;
 185     }
 186
 187     ctx->output_frames = (AVHWFramesContext*)ctx->output_frames_ref->data;
 188
 189     ctx->output_frames->format    = AV_PIX_FMT_VAAPI;
 190     ctx->output_frames->sw_format = ctx->output_format;
 191     ctx->output_frames->width     = ctx->output_width;
 192     ctx->output_frames->height    = ctx->output_height;
 193
 194     // The number of output frames we need is determined by what follows
 195     // the filter.  If it's an encoder with complex frame reference
 196     // structures then this could be very high.
 197     ctx->output_frames->initial_pool_size = 10;
 198
 199     err = av_hwframe_ctx_init(ctx->output_frames_ref);
 200     if (err < 0) {
 201         av_log(ctx, AV_LOG_ERROR, "Failed to initialise VAAPI frame "
 202                "context for output: %d\n", err);
 203         goto fail;
 204     }
 205
 206     va_frames = ctx->output_frames->hwctx;
 207
 208     av_assert0(ctx->va_context == VA_INVALID_ID);
 209     vas = vaCreateContext(ctx->hwctx->display, ctx->va_config,
 210                           ctx->output_width, ctx->output_height,
 211                           VA_PROGRESSIVE,
 212                           va_frames->surface_ids, va_frames->nb_surfaces,
 213                           &ctx->va_context);
 214     if (vas != VA_STATUS_SUCCESS) {
 215         av_log(ctx, AV_LOG_ERROR, "Failed to create processing pipeline "
 216                "context: %d (%s).\n", vas, vaErrorStr(vas));
 217         return AVERROR(EIO);
 218     }
 219
 220     outlink->w = ctx->output_width;
 221     outlink->h = ctx->output_height;
 222
 223     outlink->hw_frames_ctx = av_buffer_ref(ctx->output_frames_ref);
 224     if (!outlink->hw_frames_ctx) {
 225         err = AVERROR(ENOMEM);
 226         goto fail;
 227     }
 228
 229     av_freep(&hwconfig);
 230     av_hwframe_constraints_free(&constraints);
 231     return 0;
 232
 233 fail:
 234     av_buffer_unref(&ctx->output_frames_ref);
 235     av_freep(&hwconfig);
 236     av_hwframe_constraints_free(&constraints);
 237     return err;
 238 }
 239
 240 static int vaapi_proc_colour_standard(enum AVColorSpace av_cs)
 241 {
 242     switch(av_cs) {
 243 #define CS(av, va) case AVCOL_SPC_ ## av: return VAProcColorStandard ## va;
 244         CS(BT709,     BT709);
 245         CS(BT470BG,   BT601);
 246         CS(SMPTE170M, SMPTE170M);
 247         CS(SMPTE240M, SMPTE240M);
 248 #undef CS
 249     default:
 250         return VAProcColorStandardNone;
 251     }
 252 }
 253
 254 static int scale_vaapi_filter_frame(AVFilterLink *inlink, AVFrame *input_frame)
 255 {
 256     AVFilterContext *avctx = inlink->dst;
 257     AVFilterLink *outlink = avctx->outputs[0];
 258     ScaleVAAPIContext *ctx = avctx->priv;
 259     AVFrame *output_frame = NULL;
 260     VASurfaceID input_surface, output_surface;
 261     VAProcPipelineParameterBuffer params;
 262     VABufferID params_id;
 263     VARectangle input_region;
 264     VAStatus vas;
 265     int err;
 266
 267     av_log(ctx, AV_LOG_DEBUG, "Filter input: %s, %ux%u (%"PRId64").\n",
 268            av_get_pix_fmt_name(input_frame->format),
 269            input_frame->width, input_frame->height, input_frame->pts);
 270
 271     if (ctx->va_context == VA_INVALID_ID)
 272         return AVERROR(EINVAL);
 273
 274     input_surface = (VASurfaceID)(uintptr_t)input_frame->data[3];
 275     av_log(ctx, AV_LOG_DEBUG, "Using surface %#x for scale input.\n",
 276            input_surface);
 277
 278     output_frame = ff_get_video_buffer(outlink, ctx->output_width,
 279                                        ctx->output_height);
 280     if (!output_frame) {
 281         err = AVERROR(ENOMEM);
 282         goto fail;
 283     }
 284
 285     output_surface = (VASurfaceID)(uintptr_t)output_frame->data[3];
 286     av_log(ctx, AV_LOG_DEBUG, "Using surface %#x for scale output.\n",
 287            output_surface);
 288
 289     memset(&params, 0, sizeof(params));
 290
 291     // If there were top/left cropping, it could be taken into
 292     // account here.
 293     input_region = (VARectangle) {
 294         .x      = 0,
 295         .y      = 0,
 296         .width  = input_frame->width,
 297         .height = input_frame->height,
 298     };
 299
 300     params.surface = input_surface;
 301     params.surface_region = &input_region;
 302     params.surface_color_standard =
 303         vaapi_proc_colour_standard(input_frame->colorspace);
 304
 305     params.output_region = 0;
 306     params.output_background_color = 0xff000000;
 307     params.output_color_standard = params.surface_color_standard;
 308
 309     params.pipeline_flags = 0;
 310     params.filter_flags = VA_FILTER_SCALING_HQ;
 311
 312     vas = vaBeginPicture(ctx->hwctx->display,
 313                          ctx->va_context, output_surface);
 314     if (vas != VA_STATUS_SUCCESS) {
 315         av_log(ctx, AV_LOG_ERROR, "Failed to attach new picture: "
 316                "%d (%s).\n", vas, vaErrorStr(vas));
 317         err = AVERROR(EIO);
 318         goto fail;
 319     }
 320
 321     vas = vaCreateBuffer(ctx->hwctx->display, ctx->va_context,
 322                          VAProcPipelineParameterBufferType,
 323                          sizeof(params), 1, &params, &params_id);
 324     if (vas != VA_STATUS_SUCCESS) {
 325         av_log(ctx, AV_LOG_ERROR, "Failed to create parameter buffer: "
 326                "%d (%s).\n", vas, vaErrorStr(vas));
 327         err = AVERROR(EIO);
 328         goto fail_after_begin;
 329     }
 330     av_log(ctx, AV_LOG_DEBUG, "Pipeline parameter buffer is %#x.\n",
 331            params_id);
 332
 333     vas = vaRenderPicture(ctx->hwctx->display, ctx->va_context,
 334                           &params_id, 1);
 335     if (vas != VA_STATUS_SUCCESS) {
 336         av_log(ctx, AV_LOG_ERROR, "Failed to render parameter buffer: "
 337                "%d (%s).\n", vas, vaErrorStr(vas));
 338         err = AVERROR(EIO);
 339         goto fail_after_begin;
 340     }
 341
 342     vas = vaEndPicture(ctx->hwctx->display, ctx->va_context);
 343     if (vas != VA_STATUS_SUCCESS) {
 344         av_log(ctx, AV_LOG_ERROR, "Failed to start picture processing: "
 345                "%d (%s).\n", vas, vaErrorStr(vas));
 346         err = AVERROR(EIO);
 347         goto fail_after_render;
 348     }
 349
 350     if (HAVE_VAAPI_1 || ctx->hwctx->driver_quirks &
 351         AV_VAAPI_DRIVER_QUIRK_RENDER_PARAM_BUFFERS) {
 352         vas = vaDestroyBuffer(ctx->hwctx->display, params_id);
 353         if (vas != VA_STATUS_SUCCESS) {
 354             av_log(ctx, AV_LOG_ERROR, "Failed to free parameter buffer: "
 355                    "%d (%s).\n", vas, vaErrorStr(vas));
 356             // And ignore.
 357         }
 358     }
 359
 360     av_frame_copy_props(output_frame, input_frame);
 361     av_frame_free(&input_frame);
 362
 363     av_log(ctx, AV_LOG_DEBUG, "Filter output: %s, %ux%u (%"PRId64").\n",
 364            av_get_pix_fmt_name(output_frame->format),
 365            output_frame->width, output_frame->height, output_frame->pts);
 366
 367     return ff_filter_frame(outlink, output_frame);
 368
 369     // We want to make sure that if vaBeginPicture has been called, we also
 370     // call vaRenderPicture and vaEndPicture.  These calls may well fail or
 371     // do something else nasty, but once we're in this failure case there
 372     // isn't much else we can do.
 373 fail_after_begin:
 374     vaRenderPicture(ctx->hwctx->display, ctx->va_context, &params_id, 1);
 375 fail_after_render:
 376     vaEndPicture(ctx->hwctx->display, ctx->va_context);
 377 fail:
 378     av_frame_free(&input_frame);
 379     av_frame_free(&output_frame);
 380     return err;
 381 }
 382
 383 static av_cold int scale_vaapi_init(AVFilterContext *avctx)
 384 {
 385     ScaleVAAPIContext *ctx = avctx->priv;
 386
 387     ctx->va_config  = VA_INVALID_ID;
 388     ctx->va_context = VA_INVALID_ID;
 389     ctx->valid_ids  = 1;
 390
 391     if (ctx->output_format_string) {
 392         ctx->output_format = av_get_pix_fmt(ctx->output_format_string);
 393         if (ctx->output_format == AV_PIX_FMT_NONE) {
 394             av_log(ctx, AV_LOG_ERROR, "Invalid output format.\n");
 395             return AVERROR(EINVAL);
 396         }
 397     } else {
 398         // Use the input format once that is configured.
 399         ctx->output_format = AV_PIX_FMT_NONE;
 400     }
 401
 402     return 0;
 403 }
 404
 405 static av_cold void scale_vaapi_uninit(AVFilterContext *avctx)
 406 {
 407     ScaleVAAPIContext *ctx = avctx->priv;
 408
 409     if (ctx->valid_ids)
 410         scale_vaapi_pipeline_uninit(ctx);
 411
 412     av_buffer_unref(&ctx->input_frames_ref);
 413     av_buffer_unref(&ctx->output_frames_ref);
 414     av_buffer_unref(&ctx->device_ref);
 415 }
 416
 417
 418 #define OFFSET(x) offsetof(ScaleVAAPIContext, x)
 419 #define FLAGS (AV_OPT_FLAG_VIDEO_PARAM)
 420 static const AVOption scale_vaapi_options[] = {
 421     { "w", "Output video width",
 422       OFFSET(output_width),  AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, .flags = FLAGS },
 423     { "h", "Output video height",
 424       OFFSET(output_height), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, .flags = FLAGS },
 425     { "format", "Output video format (software format of hardware frames)",
 426       OFFSET(output_format_string), AV_OPT_TYPE_STRING, .flags = FLAGS },
 427     { NULL },
 428 };
 429
 430 static const AVClass scale_vaapi_class = {
 431     .class_name = "scale_vaapi",
 432     .item_name  = av_default_item_name,
 433     .option     = scale_vaapi_options,
 434     .version    = LIBAVUTIL_VERSION_INT,
 435 };
 436
 437 static const AVFilterPad scale_vaapi_inputs[] = {
 438     {
 439         .name         = "default",
 440         .type         = AVMEDIA_TYPE_VIDEO,
 441         .filter_frame = &scale_vaapi_filter_frame,
 442         .config_props = &scale_vaapi_config_input,
 443     },
 444     { NULL }
 445 };
 446
 447 static const AVFilterPad scale_vaapi_outputs[] = {
 448     {
 449         .name = "default",
 450         .type = AVMEDIA_TYPE_VIDEO,
 451         .config_props = &scale_vaapi_config_output,
 452     },
 453     { NULL }
 454 };
 455
 456 AVFilter ff_vf_scale_vaapi = {
 457     .name          = "scale_vaapi",
 458     .description   = NULL_IF_CONFIG_SMALL("Scale to/from VAAPI surfaces."),
 459     .priv_size     = sizeof(ScaleVAAPIContext),
 460     .init          = &scale_vaapi_init,
 461     .uninit        = &scale_vaapi_uninit,
 462     .query_formats = &scale_vaapi_query_formats,
 463     .inputs        = scale_vaapi_inputs,
 464     .outputs       = scale_vaapi_outputs,
 465     .priv_class    = &scale_vaapi_class,
 466     .flags_internal = FF_FILTER_FLAG_HWFRAME_AWARE,
 467 };