gst/vaapi/gstvaapidecode.c

   1 /*
   2  *  gstvaapidecode.c - VA-API video decoder
   3  *
   4  *  Copyright (C) 2010-2011 Splitted-Desktop Systems
   5  *    Author: Gwenole Beauchesne <gwenole.beauchesne@splitted-desktop.com>
   6  *  Copyright (C) 2011-2014 Intel Corporation
   7  *    Author: Gwenole Beauchesne <gwenole.beauchesne@intel.com>
   8  *
   9  *  This library is free software; you can redistribute it and/or
  10  *  modify it under the terms of the GNU Lesser General Public License
  11  *  as published by the Free Software Foundation; either version 2.1
  12  *  of the License, or (at your option) any later version.
  13  *
  14  *  This library is distributed in the hope that it will be useful,
  15  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  *  Lesser General Public License for more details.
  18  *
  19  *  You should have received a copy of the GNU Lesser General Public
  20  *  License along with this library; if not, write to the Free
  21  *  Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  22  *  Boston, MA 02110-1301 USA
  23 */
  24
  25 /**
  26  * SECTION:gstvaapidecode
  27  * @short_description: A VA-API based video decoder
  28  *
  29  * vaapidecode decodes from raw bitstreams to surfaces suitable for
  30  * the vaapisink element.
  31  */
  32
  33 #include "gst/vaapi/sysdeps.h"
  34 #include <gst/vaapi/gstvaapidisplay.h>
  35
  36 #include "gstvaapidecode.h"
  37 #include "gstvaapipluginutil.h"
  38 #include "gstvaapivideobuffer.h"
  39 #if GST_CHECK_VERSION(1,1,0) && USE_GLX
  40 #include "gstvaapivideometa_texture.h"
  41 #endif
  42 #if GST_CHECK_VERSION(1,0,0)
  43 #include "gstvaapivideobufferpool.h"
  44 #include "gstvaapivideomemory.h"
  45 #endif
  46
  47 #include <gst/vaapi/gstvaapidecoder_h264.h>
  48 #include <gst/vaapi/gstvaapidecoder_jpeg.h>
  49 #include <gst/vaapi/gstvaapidecoder_mpeg2.h>
  50 #include <gst/vaapi/gstvaapidecoder_mpeg4.h>
  51 #include <gst/vaapi/gstvaapidecoder_vc1.h>
  52 #include <gst/vaapi/gstvaapidecoder_vp8.h>
  53
  54 #define GST_PLUGIN_NAME "vaapidecode"
  55 #define GST_PLUGIN_DESC "A VA-API based video decoder"
  56
  57 #define GST_VAAPI_DECODE_FLOW_PARSE_DATA        GST_FLOW_CUSTOM_SUCCESS_2
  58
  59 GST_DEBUG_CATEGORY_STATIC(gst_debug_vaapidecode);
  60 #define GST_CAT_DEFAULT gst_debug_vaapidecode
  61
  62 /* Default templates */
  63 #define GST_CAPS_CODEC(CODEC) CODEC "; "
  64
  65 static const char gst_vaapidecode_sink_caps_str[] =
  66     GST_CAPS_CODEC("video/mpeg, mpegversion=2, systemstream=(boolean)false")
  67     GST_CAPS_CODEC("video/mpeg, mpegversion=4")
  68     GST_CAPS_CODEC("video/x-divx")
  69     GST_CAPS_CODEC("video/x-xvid")
  70     GST_CAPS_CODEC("video/x-h263")
  71     GST_CAPS_CODEC("video/x-h264")
  72     GST_CAPS_CODEC("video/x-wmv")
  73     GST_CAPS_CODEC("video/x-vp8")
  74     GST_CAPS_CODEC("image/jpeg")
  75     ;
  76
  77 static const char gst_vaapidecode_src_caps_str[] =
  78 #if GST_CHECK_VERSION(1,1,0)
  79     GST_VIDEO_CAPS_MAKE_WITH_FEATURES(
  80         GST_CAPS_FEATURE_MEMORY_VAAPI_SURFACE, "{ ENCODED, NV12, I420, YV12 }") ";"
  81     GST_VIDEO_CAPS_MAKE_WITH_FEATURES(
  82         GST_CAPS_FEATURE_META_GST_VIDEO_GL_TEXTURE_UPLOAD_META, "RGBA") ";"
  83     GST_VIDEO_CAPS_MAKE("{ NV12, I420, YV12 }");
  84 #else
  85     GST_VAAPI_SURFACE_CAPS;
  86 #endif
  87
  88 static GstStaticPadTemplate gst_vaapidecode_sink_factory =
  89     GST_STATIC_PAD_TEMPLATE(
  90         "sink",
  91         GST_PAD_SINK,
  92         GST_PAD_ALWAYS,
  93         GST_STATIC_CAPS(gst_vaapidecode_sink_caps_str));
  94
  95 static GstStaticPadTemplate gst_vaapidecode_src_factory =
  96     GST_STATIC_PAD_TEMPLATE(
  97         "src",
  98         GST_PAD_SRC,
  99         GST_PAD_ALWAYS,
 100         GST_STATIC_CAPS(gst_vaapidecode_src_caps_str));
 101
 102 G_DEFINE_TYPE_WITH_CODE(
 103     GstVaapiDecode,
 104     gst_vaapidecode,
 105     GST_TYPE_VIDEO_DECODER,
 106     GST_VAAPI_PLUGIN_BASE_INIT_INTERFACES)
 107
 108 static gboolean
 109 gst_vaapidecode_update_src_caps(GstVaapiDecode *decode,
 110     const GstVideoCodecState *ref_state);
 111
 112 static void
 113 gst_vaapi_decoder_state_changed(GstVaapiDecoder *decoder,
 114     const GstVideoCodecState *codec_state, gpointer user_data)
 115 {
 116     GstVaapiDecode * const decode = GST_VAAPIDECODE(user_data);
 117     GstVideoDecoder * const vdec = GST_VIDEO_DECODER(decode);
 118
 119     g_assert(decode->decoder == decoder);
 120
 121     gst_vaapidecode_update_src_caps(decode, codec_state);
 122     gst_video_decoder_negotiate(vdec);
 123 }
 124
 125 static inline gboolean
 126 gst_vaapidecode_update_sink_caps(GstVaapiDecode *decode, GstCaps *caps)
 127 {
 128     gst_caps_replace(&decode->sinkpad_caps, caps);
 129     return TRUE;
 130 }
 131
 132 static gboolean
 133 gst_vaapidecode_update_src_caps(GstVaapiDecode *decode,
 134     const GstVideoCodecState *ref_state)
 135 {
 136     GstVideoDecoder * const vdec = GST_VIDEO_DECODER(decode);
 137     GstVideoCodecState *state;
 138     GstVideoInfo *vi, vis;
 139 #if GST_CHECK_VERSION(1,1,0)
 140     GstCapsFeatures *features = NULL;
 141     GstVaapiCapsFeature feature;
 142
 143     feature = gst_vaapi_find_preferred_caps_feature(
 144         GST_VIDEO_DECODER_SRC_PAD(vdec),
 145         GST_VIDEO_INFO_FORMAT(&ref_state->info));
 146 #endif
 147
 148     state = gst_video_decoder_set_output_state(vdec,
 149         GST_VIDEO_INFO_FORMAT(&ref_state->info),
 150         ref_state->info.width, ref_state->info.height,
 151         (GstVideoCodecState *)ref_state);
 152     if (!state)
 153         return FALSE;
 154
 155     vi = &state->info;
 156     if (GST_VIDEO_INFO_FORMAT(vi) == GST_VIDEO_FORMAT_ENCODED) {
 157         gst_video_info_init(&vis);
 158         gst_video_info_set_format(&vis, GST_VIDEO_FORMAT_NV12,
 159             GST_VIDEO_INFO_WIDTH(vi), GST_VIDEO_INFO_HEIGHT(vi));
 160         vi->size = vis.size;
 161     }
 162     gst_video_codec_state_unref(state);
 163
 164 #if GST_CHECK_VERSION(1,1,0)
 165     vis = *vi;
 166     switch (feature) {
 167     case GST_VAAPI_CAPS_FEATURE_GL_TEXTURE_UPLOAD_META:
 168         gst_video_info_set_format(&vis, GST_VIDEO_FORMAT_RGBA,
 169             GST_VIDEO_INFO_WIDTH(vi), GST_VIDEO_INFO_HEIGHT(vi));
 170         features = gst_caps_features_new(
 171             GST_CAPS_FEATURE_META_GST_VIDEO_GL_TEXTURE_UPLOAD_META, NULL);
 172         break;
 173     default:
 174         if (GST_VIDEO_INFO_FORMAT(vi) == GST_VIDEO_FORMAT_ENCODED) {
 175             /* XXX: this is a workaround until auto-plugging is fixed when
 176             format=ENCODED + memory:VASurface caps feature are provided.
 177             Meanwhile, providing a random format here works but this is
 178             a terribly wrong thing per se. */
 179             gst_video_info_set_format(&vis, GST_VIDEO_FORMAT_NV12,
 180                 GST_VIDEO_INFO_WIDTH(vi), GST_VIDEO_INFO_HEIGHT(vi));
 181 #if GST_CHECK_VERSION(1,3,0)
 182             if (feature == GST_VAAPI_CAPS_FEATURE_VAAPI_SURFACE)
 183                 features = gst_caps_features_new(
 184                     GST_CAPS_FEATURE_MEMORY_VAAPI_SURFACE, NULL);
 185 #endif
 186         }
 187         break;
 188     }
 189     state->caps = gst_video_info_to_caps(&vis);
 190     if (features)
 191         gst_caps_set_features(state->caps, 0, features);
 192 #else
 193     /* XXX: gst_video_info_to_caps() from GStreamer 0.10 does not
 194        reconstruct suitable caps for "encoded" video formats */
 195     state->caps = gst_caps_from_string(GST_VAAPI_SURFACE_CAPS_NAME);
 196     if (!state->caps)
 197         return FALSE;
 198
 199     gst_caps_set_simple(state->caps,
 200         "type", G_TYPE_STRING, "vaapi",
 201         "opengl", G_TYPE_BOOLEAN, USE_GLX,
 202         "width", G_TYPE_INT, vi->width,
 203         "height", G_TYPE_INT, vi->height,
 204         "framerate", GST_TYPE_FRACTION, vi->fps_n, vi->fps_d,
 205         "pixel-aspect-ratio", GST_TYPE_FRACTION, vi->par_n, vi->par_d,
 206         NULL);
 207
 208     gst_caps_set_interlaced(state->caps, vi);
 209 #endif
 210     gst_caps_replace(&decode->srcpad_caps, state->caps);
 211     return TRUE;
 212 }
 213
 214 static void
 215 gst_vaapidecode_release(GstVaapiDecode *decode)
 216 {
 217     g_mutex_lock(&decode->decoder_mutex);
 218     g_cond_signal(&decode->decoder_ready);
 219     g_mutex_unlock(&decode->decoder_mutex);
 220 }
 221
 222 static GstFlowReturn
 223 gst_vaapidecode_decode_frame(GstVideoDecoder *vdec, GstVideoCodecFrame *frame)
 224 {
 225     GstVaapiDecode * const decode = GST_VAAPIDECODE(vdec);
 226     GstVaapiDecoderStatus status;
 227     GstFlowReturn ret;
 228
 229     /* Decode current frame */
 230     for (;;) {
 231         status = gst_vaapi_decoder_decode(decode->decoder, frame);
 232         if (status == GST_VAAPI_DECODER_STATUS_ERROR_NO_SURFACE) {
 233             GST_VIDEO_DECODER_STREAM_UNLOCK(vdec);
 234             g_mutex_lock(&decode->decoder_mutex);
 235             g_cond_wait(&decode->decoder_ready, &decode->decoder_mutex);
 236             g_mutex_unlock(&decode->decoder_mutex);
 237             GST_VIDEO_DECODER_STREAM_LOCK(vdec);
 238             if (decode->decoder_loop_status < 0)
 239                 goto error_decode_loop;
 240             continue;
 241         }
 242         if (status != GST_VAAPI_DECODER_STATUS_SUCCESS)
 243             goto error_decode;
 244         break;
 245     }
 246
 247     /* Try to report back early any error that occured in the decode task */
 248     GST_VIDEO_DECODER_STREAM_UNLOCK(vdec);
 249     GST_VIDEO_DECODER_STREAM_LOCK(vdec);
 250     return decode->decoder_loop_status;
 251
 252     /* ERRORS */
 253 error_decode_loop:
 254     {
 255         GST_ERROR("decode loop error %d", decode->decoder_loop_status);
 256         gst_video_decoder_drop_frame(vdec, frame);
 257         return decode->decoder_loop_status;
 258     }
 259 error_decode:
 260     {
 261         GST_ERROR("decode error %d", status);
 262         switch (status) {
 263         case GST_VAAPI_DECODER_STATUS_ERROR_UNSUPPORTED_CODEC:
 264         case GST_VAAPI_DECODER_STATUS_ERROR_UNSUPPORTED_PROFILE:
 265         case GST_VAAPI_DECODER_STATUS_ERROR_UNSUPPORTED_CHROMA_FORMAT:
 266             ret = GST_FLOW_NOT_SUPPORTED;
 267             break;
 268         default:
 269             ret = GST_FLOW_ERROR;
 270             break;
 271         }
 272         gst_video_decoder_drop_frame(vdec, frame);
 273         return ret;
 274     }
 275 }
 276
 277 static GstFlowReturn
 278 gst_vaapidecode_push_decoded_frame(GstVideoDecoder *vdec,
 279     GstVideoCodecFrame *out_frame)
 280 {
 281     GstVaapiDecode * const decode = GST_VAAPIDECODE(vdec);
 282     GstVaapiSurfaceProxy *proxy;
 283     GstFlowReturn ret;
 284 #if GST_CHECK_VERSION(1,0,0)
 285     const GstVaapiRectangle *crop_rect;
 286     GstVaapiVideoMeta *meta;
 287     guint flags;
 288 #endif
 289
 290     if (!GST_VIDEO_CODEC_FRAME_IS_DECODE_ONLY(out_frame)) {
 291         proxy = gst_video_codec_frame_get_user_data(out_frame);
 292
 293         gst_vaapi_surface_proxy_set_destroy_notify(proxy,
 294             (GDestroyNotify)gst_vaapidecode_release, decode);
 295
 296 #if GST_CHECK_VERSION(1,0,0)
 297         ret = gst_video_decoder_allocate_output_frame(vdec, out_frame);
 298         if (ret != GST_FLOW_OK)
 299             goto error_create_buffer;
 300
 301         meta = gst_buffer_get_vaapi_video_meta(out_frame->output_buffer);
 302         if (!meta)
 303             goto error_get_meta;
 304         gst_vaapi_video_meta_set_surface_proxy(meta, proxy);
 305
 306         flags = gst_vaapi_surface_proxy_get_flags(proxy);
 307         if (flags & GST_VAAPI_SURFACE_PROXY_FLAG_INTERLACED) {
 308             guint out_flags = GST_VIDEO_BUFFER_FLAG_INTERLACED;
 309             if (flags & GST_VAAPI_SURFACE_PROXY_FLAG_TFF)
 310                 out_flags |= GST_VIDEO_BUFFER_FLAG_TFF;
 311             if (flags & GST_VAAPI_SURFACE_PROXY_FLAG_RFF)
 312                 out_flags |= GST_VIDEO_BUFFER_FLAG_RFF;
 313             if (flags & GST_VAAPI_SURFACE_PROXY_FLAG_ONEFIELD)
 314                 out_flags |= GST_VIDEO_BUFFER_FLAG_ONEFIELD;
 315             GST_BUFFER_FLAG_SET(out_frame->output_buffer, out_flags);
 316         }
 317
 318         crop_rect = gst_vaapi_surface_proxy_get_crop_rect(proxy);
 319         if (crop_rect) {
 320             GstVideoCropMeta * const crop_meta =
 321                 gst_buffer_add_video_crop_meta(out_frame->output_buffer);
 322             if (crop_meta) {
 323                 crop_meta->x = crop_rect->x;
 324                 crop_meta->y = crop_rect->y;
 325                 crop_meta->width = crop_rect->width;
 326                 crop_meta->height = crop_rect->height;
 327             }
 328         }
 329
 330 #if GST_CHECK_VERSION(1,1,0) && USE_GLX
 331         if (decode->has_texture_upload_meta)
 332             gst_buffer_ensure_texture_upload_meta(out_frame->output_buffer);
 333 #endif
 334 #else
 335         out_frame->output_buffer =
 336             gst_vaapi_video_buffer_new_with_surface_proxy(proxy);
 337         if (!out_frame->output_buffer)
 338             goto error_create_buffer;
 339 #endif
 340     }
 341
 342     ret = gst_video_decoder_finish_frame(vdec, out_frame);
 343     if (ret != GST_FLOW_OK)
 344         goto error_commit_buffer;
 345
 346     gst_video_codec_frame_unref(out_frame);
 347     return GST_FLOW_OK;
 348
 349     /* ERRORS */
 350 error_create_buffer:
 351     {
 352         const GstVaapiID surface_id =
 353             gst_vaapi_surface_get_id(GST_VAAPI_SURFACE_PROXY_SURFACE(proxy));
 354
 355         GST_ERROR("video sink failed to create video buffer for proxy'ed "
 356                   "surface %" GST_VAAPI_ID_FORMAT,
 357                   GST_VAAPI_ID_ARGS(surface_id));
 358         gst_video_decoder_drop_frame(vdec, out_frame);
 359         gst_video_codec_frame_unref(out_frame);
 360         return GST_FLOW_ERROR;
 361     }
 362 #if GST_CHECK_VERSION(1,0,0)
 363 error_get_meta:
 364     {
 365         GST_ERROR("failed to get vaapi video meta attached to video buffer");
 366         gst_video_decoder_drop_frame(vdec, out_frame);
 367         gst_video_codec_frame_unref(out_frame);
 368         return GST_FLOW_ERROR;
 369     }
 370 #endif
 371 error_commit_buffer:
 372     {
 373         if (ret != GST_FLOW_FLUSHING)
 374             GST_ERROR("video sink rejected the video buffer (error %d)", ret);
 375         gst_video_codec_frame_unref(out_frame);
 376         return ret;
 377     }
 378 }
 379
 380 static GstFlowReturn
 381 gst_vaapidecode_handle_frame(GstVideoDecoder *vdec, GstVideoCodecFrame *frame)
 382 {
 383     GstFlowReturn ret;
 384
 385     /* Make sure to release the base class stream lock so that decode
 386        loop can call gst_video_decoder_finish_frame() without blocking */
 387     GST_VIDEO_DECODER_STREAM_UNLOCK(vdec);
 388     ret = gst_vaapidecode_decode_frame(vdec, frame);
 389     GST_VIDEO_DECODER_STREAM_LOCK(vdec);
 390     return ret;
 391 }
 392
 393 static void
 394 gst_vaapidecode_decode_loop(GstVaapiDecode *decode)
 395 {
 396     GstVideoDecoder * const vdec = GST_VIDEO_DECODER(decode);
 397     GstVaapiDecoderStatus status;
 398     GstVideoCodecFrame *out_frame;
 399     GstFlowReturn ret;
 400
 401     status = gst_vaapi_decoder_get_frame_with_timeout(decode->decoder,
 402         &out_frame, 100000);
 403
 404     GST_VIDEO_DECODER_STREAM_LOCK(vdec);
 405     switch (status) {
 406     case GST_VAAPI_DECODER_STATUS_SUCCESS:
 407         ret = gst_vaapidecode_push_decoded_frame(vdec, out_frame);
 408         break;
 409     case GST_VAAPI_DECODER_STATUS_ERROR_NO_DATA:
 410         ret = GST_VIDEO_DECODER_FLOW_NEED_DATA;
 411         break;
 412     default:
 413         ret = GST_FLOW_ERROR;
 414         break;
 415     }
 416     decode->decoder_loop_status = ret;
 417     GST_VIDEO_DECODER_STREAM_UNLOCK(vdec);
 418
 419     if (ret == GST_FLOW_OK)
 420         return;
 421
 422     /* If invoked from gst_vaapidecode_finish(), then return right
 423        away no matter the errors, or the GstVaapiDecoder needs further
 424        data to complete decoding (there no more data to feed in) */
 425     if (decode->decoder_finish) {
 426         g_mutex_lock(&decode->decoder_mutex);
 427         g_cond_signal(&decode->decoder_finish_done);
 428         g_mutex_unlock(&decode->decoder_mutex);
 429         return;
 430     }
 431
 432     /* Suspend the task if an error occurred */
 433     if (ret != GST_VIDEO_DECODER_FLOW_NEED_DATA)
 434         gst_pad_pause_task(GST_VAAPI_PLUGIN_BASE_SRC_PAD(decode));
 435 }
 436
 437 static gboolean
 438 gst_vaapidecode_flush(GstVideoDecoder *vdec)
 439 {
 440     GstVaapiDecode * const decode = GST_VAAPIDECODE(vdec);
 441     GstVaapiDecoderStatus status;
 442
 443     /* If there is something in GstVideoDecoder's output adapter, then
 444        submit the frame for decoding */
 445     if (decode->current_frame_size) {
 446         gst_video_decoder_have_frame(vdec);
 447         decode->current_frame_size = 0;
 448     }
 449
 450     status = gst_vaapi_decoder_flush(decode->decoder);
 451     if (status != GST_VAAPI_DECODER_STATUS_SUCCESS)
 452         goto error_flush;
 453     return TRUE;
 454
 455     /* ERRORS */
 456 error_flush:
 457     {
 458         GST_ERROR("failed to flush decoder (status %d)", status);
 459         return FALSE;
 460     }
 461 }
 462
 463 static GstFlowReturn
 464 gst_vaapidecode_finish(GstVideoDecoder *vdec)
 465 {
 466     GstVaapiDecode * const decode = GST_VAAPIDECODE(vdec);
 467     GstFlowReturn ret = GST_FLOW_OK;
 468
 469     if (!gst_vaapidecode_flush(vdec))
 470         ret = GST_FLOW_OK;
 471
 472     /* Make sure the decode loop function has a chance to return, thus
 473        possibly unlocking gst_video_decoder_finish_frame() */
 474     GST_VIDEO_DECODER_STREAM_UNLOCK(vdec);
 475     g_mutex_lock(&decode->decoder_mutex);
 476     decode->decoder_finish = TRUE;
 477     g_cond_wait(&decode->decoder_finish_done, &decode->decoder_mutex);
 478     g_mutex_unlock(&decode->decoder_mutex);
 479     gst_pad_stop_task(GST_VAAPI_PLUGIN_BASE_SRC_PAD(decode));
 480     GST_VIDEO_DECODER_STREAM_LOCK(vdec);
 481     return ret;
 482 }
 483
 484 #if GST_CHECK_VERSION(1,0,0)
 485 static gboolean
 486 gst_vaapidecode_decide_allocation(GstVideoDecoder *vdec, GstQuery *query)
 487 {
 488     GstVaapiDecode * const decode = GST_VAAPIDECODE(vdec);
 489     GstCaps *caps = NULL;
 490     GstBufferPool *pool;
 491     GstStructure *config;
 492     GstVideoInfo vi;
 493     guint size, min, max;
 494     gboolean need_pool, update_pool;
 495     gboolean has_video_meta = FALSE;
 496     GstVideoCodecState *state;
 497 #if GST_CHECK_VERSION(1,1,0) && USE_GLX
 498     GstCapsFeatures *features, *features2;
 499 #endif
 500
 501     gst_query_parse_allocation(query, &caps, &need_pool);
 502
 503     if (!caps)
 504         goto error_no_caps;
 505
 506     state = gst_video_decoder_get_output_state(vdec);
 507
 508     decode->has_texture_upload_meta = FALSE;
 509     has_video_meta = gst_query_find_allocation_meta(query, GST_VIDEO_META_API_TYPE, NULL);
 510 #if GST_CHECK_VERSION(1,1,0) && USE_GLX
 511     if (has_video_meta)
 512         decode->has_texture_upload_meta = gst_query_find_allocation_meta(query,
 513             GST_VIDEO_GL_TEXTURE_UPLOAD_META_API_TYPE, NULL);
 514
 515     features = gst_caps_get_features(state->caps, 0);
 516     features2 = gst_caps_features_new(GST_CAPS_FEATURE_META_GST_VIDEO_GL_TEXTURE_UPLOAD_META, NULL);
 517
 518     /* Update src caps if feature is not handled downstream */
 519     if (!decode->has_texture_upload_meta &&
 520         gst_caps_features_is_equal(features, features2))
 521         gst_vaapidecode_update_src_caps (decode, state);
 522     gst_caps_features_free(features2);
 523 #endif
 524
 525     gst_video_codec_state_unref(state);
 526
 527     gst_video_info_init(&vi);
 528     gst_video_info_from_caps(&vi, caps);
 529     if (GST_VIDEO_INFO_FORMAT(&vi) == GST_VIDEO_FORMAT_ENCODED)
 530         gst_video_info_set_format(&vi, GST_VIDEO_FORMAT_NV12,
 531             GST_VIDEO_INFO_WIDTH(&vi), GST_VIDEO_INFO_HEIGHT(&vi));
 532
 533     g_return_val_if_fail(GST_VAAPI_PLUGIN_BASE_DISPLAY(decode) != NULL, FALSE);
 534
 535     if (gst_query_get_n_allocation_pools(query) > 0) {
 536         gst_query_parse_nth_allocation_pool(query, 0, &pool, &size, &min, &max);
 537         size = MAX(size, vi.size);
 538         update_pool = TRUE;
 539     }
 540     else {
 541         pool = NULL;
 542         size = vi.size;
 543         min = max = 0;
 544         update_pool = FALSE;
 545     }
 546
 547     if (!pool || !gst_buffer_pool_has_option(pool,
 548             GST_BUFFER_POOL_OPTION_VAAPI_VIDEO_META)) {
 549         GST_INFO("no pool or doesn't support GstVaapiVideoMeta, "
 550             "making new pool");
 551         pool = gst_vaapi_video_buffer_pool_new(
 552             GST_VAAPI_PLUGIN_BASE_DISPLAY(decode));
 553         if (!pool)
 554             goto error_create_pool;
 555
 556         config = gst_buffer_pool_get_config(pool);
 557         gst_buffer_pool_config_set_params(config, caps, size, min, max);
 558         gst_buffer_pool_config_add_option(config,
 559             GST_BUFFER_POOL_OPTION_VAAPI_VIDEO_META);
 560         gst_buffer_pool_set_config(pool, config);
 561     }
 562
 563     if (has_video_meta) {
 564         config = gst_buffer_pool_get_config(pool);
 565         gst_buffer_pool_config_add_option(config,
 566             GST_BUFFER_POOL_OPTION_VIDEO_META);
 567 #if GST_CHECK_VERSION(1,1,0) && USE_GLX
 568         if (decode->has_texture_upload_meta)
 569             gst_buffer_pool_config_add_option(config,
 570                 GST_BUFFER_POOL_OPTION_VIDEO_GL_TEXTURE_UPLOAD_META);
 571 #endif
 572         gst_buffer_pool_set_config(pool, config);
 573     }
 574
 575     if (update_pool)
 576         gst_query_set_nth_allocation_pool(query, 0, pool, size, min, max);
 577     else
 578         gst_query_add_allocation_pool(query, pool, size, min, max);
 579     if (pool)
 580         gst_object_unref(pool);
 581     return TRUE;
 582
 583     /* ERRORS */
 584 error_no_caps:
 585     {
 586         GST_ERROR("no caps specified");
 587         return FALSE;
 588     }
 589 error_create_pool:
 590     {
 591         GST_ERROR("failed to create buffer pool");
 592         return FALSE;
 593     }
 594 }
 595 #endif
 596
 597 static inline gboolean
 598 gst_vaapidecode_ensure_display(GstVaapiDecode *decode)
 599 {
 600     return gst_vaapi_plugin_base_ensure_display(GST_VAAPI_PLUGIN_BASE(decode));
 601 }
 602
 603 static inline guint
 604 gst_vaapi_codec_from_caps(GstCaps *caps)
 605 {
 606     return gst_vaapi_profile_get_codec(gst_vaapi_profile_from_caps(caps));
 607 }
 608
 609 static gboolean
 610 gst_vaapidecode_create(GstVaapiDecode *decode, GstCaps *caps)
 611 {
 612     GstVaapiDisplay *dpy;
 613
 614     if (!gst_vaapidecode_ensure_display(decode))
 615         return FALSE;
 616     dpy = GST_VAAPI_PLUGIN_BASE_DISPLAY(decode);
 617
 618     switch (gst_vaapi_codec_from_caps(caps)) {
 619     case GST_VAAPI_CODEC_MPEG2:
 620         decode->decoder = gst_vaapi_decoder_mpeg2_new(dpy, caps);
 621         break;
 622     case GST_VAAPI_CODEC_MPEG4:
 623     case GST_VAAPI_CODEC_H263:
 624         decode->decoder = gst_vaapi_decoder_mpeg4_new(dpy, caps);
 625         break;
 626     case GST_VAAPI_CODEC_H264:
 627         decode->decoder = gst_vaapi_decoder_h264_new(dpy, caps);
 628         break;
 629     case GST_VAAPI_CODEC_WMV3:
 630     case GST_VAAPI_CODEC_VC1:
 631         decode->decoder = gst_vaapi_decoder_vc1_new(dpy, caps);
 632         break;
 633 #if USE_JPEG_DECODER
 634     case GST_VAAPI_CODEC_JPEG:
 635         decode->decoder = gst_vaapi_decoder_jpeg_new(dpy, caps);
 636         break;
 637 #endif
 638 #if USE_VP8_DECODER
 639     case GST_VAAPI_CODEC_VP8:
 640         decode->decoder = gst_vaapi_decoder_vp8_new(dpy, caps);
 641         break;
 642 #endif
 643     default:
 644         decode->decoder = NULL;
 645         break;
 646     }
 647     if (!decode->decoder)
 648         return FALSE;
 649
 650     gst_vaapi_decoder_set_codec_state_changed_func(decode->decoder,
 651         gst_vaapi_decoder_state_changed, decode);
 652
 653     decode->decoder_caps = gst_caps_ref(caps);
 654     return gst_pad_start_task(GST_VAAPI_PLUGIN_BASE_SRC_PAD(decode),
 655         (GstTaskFunction)gst_vaapidecode_decode_loop, decode, NULL);
 656 }
 657
 658 static void
 659 gst_vaapidecode_destroy(GstVaapiDecode *decode)
 660 {
 661     gst_pad_stop_task(GST_VAAPI_PLUGIN_BASE_SRC_PAD(decode));
 662     gst_vaapi_decoder_replace(&decode->decoder, NULL);
 663     gst_caps_replace(&decode->decoder_caps, NULL);
 664     gst_vaapidecode_release(decode);
 665 }
 666
 667 static gboolean
 668 gst_vaapidecode_reset_full(GstVaapiDecode *decode, GstCaps *caps, gboolean hard)
 669 {
 670     GstVaapiCodec codec;
 671
 672     decode->has_texture_upload_meta = FALSE;
 673
 674     /* Reset tracked frame size */
 675     decode->current_frame_size = 0;
 676
 677     /* Reset timers if hard reset was requested (e.g. seek) */
 678     if (hard) {
 679         GstVideoDecoder * const vdec = GST_VIDEO_DECODER(decode);
 680         GstVideoCodecFrame *out_frame = NULL;
 681
 682         gst_vaapi_decoder_flush(decode->decoder);
 683         GST_VIDEO_DECODER_STREAM_UNLOCK(vdec);
 684         gst_pad_stop_task(GST_VAAPI_PLUGIN_BASE_SRC_PAD(decode));
 685         GST_VIDEO_DECODER_STREAM_LOCK(vdec);
 686         decode->decoder_loop_status = GST_FLOW_OK;
 687
 688         /* Purge all decoded frames as we don't need them (e.g. seek) */
 689         while (gst_vaapi_decoder_get_frame_with_timeout(decode->decoder,
 690                    &out_frame, 0) == GST_VAAPI_DECODER_STATUS_SUCCESS) {
 691             gst_video_codec_frame_unref(out_frame);
 692             out_frame = NULL;
 693         }
 694     }
 695
 696     /* Only reset decoder if codec type changed */
 697     else if (decode->decoder && decode->decoder_caps) {
 698         if (gst_caps_is_always_compatible(caps, decode->decoder_caps))
 699             return TRUE;
 700         codec = gst_vaapi_codec_from_caps(caps);
 701         if (codec == gst_vaapi_decoder_get_codec(decode->decoder))
 702             return TRUE;
 703     }
 704
 705     gst_vaapidecode_destroy(decode);
 706     return gst_vaapidecode_create(decode, caps);
 707 }
 708
 709 static void
 710 gst_vaapidecode_finalize(GObject *object)
 711 {
 712     GstVaapiDecode * const decode = GST_VAAPIDECODE(object);
 713
 714     gst_caps_replace(&decode->sinkpad_caps, NULL);
 715     gst_caps_replace(&decode->srcpad_caps,  NULL);
 716     gst_caps_replace(&decode->allowed_caps, NULL);
 717
 718     g_cond_clear(&decode->decoder_finish_done);
 719     g_cond_clear(&decode->decoder_ready);
 720     g_mutex_clear(&decode->decoder_mutex);
 721
 722     gst_vaapi_plugin_base_finalize(GST_VAAPI_PLUGIN_BASE(object));
 723     G_OBJECT_CLASS(gst_vaapidecode_parent_class)->finalize(object);
 724 }
 725
 726 static gboolean
 727 gst_vaapidecode_open(GstVideoDecoder *vdec)
 728 {
 729     GstVaapiDecode * const decode = GST_VAAPIDECODE(vdec);
 730     GstVaapiDisplay * const old_display = GST_VAAPI_PLUGIN_BASE_DISPLAY(decode);
 731     gboolean success;
 732
 733     if (!gst_vaapi_plugin_base_open(GST_VAAPI_PLUGIN_BASE(decode)))
 734         return FALSE;
 735
 736     /* Let GstVideoContext ask for a proper display to its neighbours */
 737     /* Note: steal old display that may be allocated from get_caps()
 738        so that to retain a reference to it, thus avoiding extra
 739        initialization steps if we turn out to simply re-use the
 740        existing (cached) VA display */
 741     GST_VAAPI_PLUGIN_BASE_DISPLAY(decode) = NULL;
 742     success = gst_vaapidecode_ensure_display(decode);
 743     if (old_display)
 744         gst_vaapi_display_unref(old_display);
 745     return success;
 746 }
 747
 748 static gboolean
 749 gst_vaapidecode_close(GstVideoDecoder *vdec)
 750 {
 751     GstVaapiDecode * const decode = GST_VAAPIDECODE(vdec);
 752
 753     gst_vaapidecode_destroy(decode);
 754     gst_vaapi_plugin_base_close(GST_VAAPI_PLUGIN_BASE(decode));
 755     return TRUE;
 756 }
 757
 758 static gboolean
 759 gst_vaapidecode_reset(GstVideoDecoder *vdec, gboolean hard)
 760 {
 761     GstVaapiDecode * const decode = GST_VAAPIDECODE(vdec);
 762
 763     /* In GStreamer 1.0 context, this means a flush */
 764     if (decode->decoder && !hard && !gst_vaapidecode_flush(vdec))
 765         return FALSE;
 766     return gst_vaapidecode_reset_full(decode, decode->sinkpad_caps, hard);
 767 }
 768
 769 static gboolean
 770 gst_vaapidecode_set_format(GstVideoDecoder *vdec, GstVideoCodecState *state)
 771 {
 772     GstVaapiPluginBase * const plugin = GST_VAAPI_PLUGIN_BASE(vdec);
 773     GstVaapiDecode * const decode = GST_VAAPIDECODE(vdec);
 774
 775     if (!gst_vaapidecode_update_sink_caps(decode, state->caps))
 776         return FALSE;
 777     if (!gst_vaapidecode_update_src_caps(decode, state))
 778         return FALSE;
 779     if (!gst_video_decoder_negotiate(vdec))
 780         return FALSE;
 781     if (!gst_vaapi_plugin_base_set_caps(plugin, decode->sinkpad_caps,
 782             decode->srcpad_caps))
 783         return FALSE;
 784     if (!gst_vaapidecode_reset_full(decode, decode->sinkpad_caps, FALSE))
 785         return FALSE;
 786     return TRUE;
 787 }
 788
 789 static GstFlowReturn
 790 gst_vaapidecode_parse_frame(GstVideoDecoder *vdec,
 791     GstVideoCodecFrame *frame, GstAdapter *adapter, gboolean at_eos)
 792 {
 793     GstVaapiDecode * const decode = GST_VAAPIDECODE(vdec);
 794     GstVaapiDecoderStatus status;
 795     GstFlowReturn ret;
 796     guint got_unit_size;
 797     gboolean got_frame;
 798
 799     status = gst_vaapi_decoder_parse(decode->decoder, frame,
 800         adapter, at_eos, &got_unit_size, &got_frame);
 801
 802     switch (status) {
 803     case GST_VAAPI_DECODER_STATUS_SUCCESS:
 804         if (got_unit_size > 0) {
 805             gst_video_decoder_add_to_frame(vdec, got_unit_size);
 806             decode->current_frame_size += got_unit_size;
 807         }
 808         if (got_frame) {
 809             ret = gst_video_decoder_have_frame(vdec);
 810             decode->current_frame_size = 0;
 811         }
 812         else
 813             ret = GST_VAAPI_DECODE_FLOW_PARSE_DATA;
 814         break;
 815     case GST_VAAPI_DECODER_STATUS_ERROR_NO_DATA:
 816         ret = GST_VIDEO_DECODER_FLOW_NEED_DATA;
 817         break;
 818     case GST_VAAPI_DECODER_STATUS_ERROR_UNSUPPORTED_CODEC:
 819     case GST_VAAPI_DECODER_STATUS_ERROR_UNSUPPORTED_PROFILE:
 820     case GST_VAAPI_DECODER_STATUS_ERROR_UNSUPPORTED_CHROMA_FORMAT:
 821         GST_WARNING("parse error %d", status);
 822         ret = GST_FLOW_NOT_SUPPORTED;
 823         decode->current_frame_size = 0;
 824         break;
 825     default:
 826         GST_ERROR("parse error %d", status);
 827         ret = GST_FLOW_EOS;
 828         decode->current_frame_size = 0;
 829         break;
 830     }
 831     return ret;
 832 }
 833
 834 static GstFlowReturn
 835 gst_vaapidecode_parse(GstVideoDecoder *vdec,
 836     GstVideoCodecFrame *frame, GstAdapter *adapter, gboolean at_eos)
 837 {
 838     GstFlowReturn ret;
 839
 840     do {
 841         ret = gst_vaapidecode_parse_frame(vdec, frame, adapter, at_eos);
 842     } while (ret == GST_VAAPI_DECODE_FLOW_PARSE_DATA);
 843     return ret;
 844 }
 845
 846 static GstStateChangeReturn
 847 gst_vaapidecode_change_state (GstElement * element, GstStateChange transition)
 848 {
 849     GstVaapiDecode * const decode = GST_VAAPIDECODE(element);
 850
 851     switch (transition) {
 852     case GST_STATE_CHANGE_PAUSED_TO_READY:
 853         gst_pad_stop_task(GST_VAAPI_PLUGIN_BASE_SRC_PAD(decode));
 854         break;
 855     default:
 856         break;
 857     }
 858     return GST_ELEMENT_CLASS(gst_vaapidecode_parent_class)->change_state(
 859         element, transition);
 860 }
 861
 862 static void
 863 gst_vaapidecode_class_init(GstVaapiDecodeClass *klass)
 864 {
 865     GObjectClass * const object_class = G_OBJECT_CLASS(klass);
 866     GstElementClass * const element_class = GST_ELEMENT_CLASS(klass);
 867     GstVideoDecoderClass * const vdec_class = GST_VIDEO_DECODER_CLASS(klass);
 868     GstPadTemplate *pad_template;
 869
 870     GST_DEBUG_CATEGORY_INIT(gst_debug_vaapidecode,
 871                             GST_PLUGIN_NAME, 0, GST_PLUGIN_DESC);
 872
 873     gst_vaapi_plugin_base_class_init(GST_VAAPI_PLUGIN_BASE_CLASS(klass));
 874
 875     object_class->finalize   = gst_vaapidecode_finalize;
 876
 877     element_class->change_state =
 878         GST_DEBUG_FUNCPTR(gst_vaapidecode_change_state);
 879
 880     vdec_class->open         = GST_DEBUG_FUNCPTR(gst_vaapidecode_open);
 881     vdec_class->close        = GST_DEBUG_FUNCPTR(gst_vaapidecode_close);
 882     vdec_class->set_format   = GST_DEBUG_FUNCPTR(gst_vaapidecode_set_format);
 883     vdec_class->reset        = GST_DEBUG_FUNCPTR(gst_vaapidecode_reset);
 884     vdec_class->parse        = GST_DEBUG_FUNCPTR(gst_vaapidecode_parse);
 885     vdec_class->handle_frame = GST_DEBUG_FUNCPTR(gst_vaapidecode_handle_frame);
 886     vdec_class->finish       = GST_DEBUG_FUNCPTR(gst_vaapidecode_finish);
 887
 888 #if GST_CHECK_VERSION(1,0,0)
 889     vdec_class->decide_allocation =
 890         GST_DEBUG_FUNCPTR(gst_vaapidecode_decide_allocation);
 891 #endif
 892
 893     gst_element_class_set_static_metadata(element_class,
 894         "VA-API decoder",
 895         "Codec/Decoder/Video",
 896         GST_PLUGIN_DESC,
 897         "Gwenole Beauchesne <gwenole.beauchesne@intel.com>");
 898
 899     /* sink pad */
 900     pad_template = gst_static_pad_template_get(&gst_vaapidecode_sink_factory);
 901     gst_element_class_add_pad_template(element_class, pad_template);
 902
 903     /* src pad */
 904     pad_template = gst_static_pad_template_get(&gst_vaapidecode_src_factory);
 905     gst_element_class_add_pad_template(element_class, pad_template);
 906 }
 907
 908 static gboolean
 909 gst_vaapidecode_ensure_allowed_caps(GstVaapiDecode *decode)
 910 {
 911     GstCaps *caps, *allowed_caps;
 912     GArray *profiles;
 913     guint i;
 914
 915     if (decode->allowed_caps)
 916         return TRUE;
 917
 918     if (!gst_vaapidecode_ensure_display(decode))
 919         goto error_no_display;
 920
 921     profiles = gst_vaapi_display_get_decode_profiles(
 922         GST_VAAPI_PLUGIN_BASE_DISPLAY(decode));
 923     if (!profiles)
 924         goto error_no_profiles;
 925
 926     allowed_caps = gst_caps_new_empty();
 927     if (!allowed_caps)
 928         goto error_no_memory;
 929
 930     for (i = 0; i < profiles->len; i++) {
 931         const GstVaapiProfile profile =
 932             g_array_index(profiles, GstVaapiProfile, i);
 933         const gchar *media_type_name;
 934
 935         media_type_name = gst_vaapi_profile_get_media_type_name(profile);
 936         if (!media_type_name)
 937             continue;
 938
 939         caps = gst_caps_from_string(media_type_name);
 940         if (!caps)
 941             continue;
 942         allowed_caps = gst_caps_merge(allowed_caps, caps);
 943     }
 944     decode->allowed_caps = allowed_caps;
 945
 946     g_array_unref(profiles);
 947     return TRUE;
 948
 949     /* ERRORS */
 950 error_no_display:
 951     {
 952         GST_ERROR("failed to retrieve VA display");
 953         return FALSE;
 954     }
 955 error_no_profiles:
 956     {
 957         GST_ERROR("failed to retrieve VA decode profiles");
 958         return FALSE;
 959     }
 960 error_no_memory:
 961     {
 962         GST_ERROR("failed to allocate allowed-caps set");
 963         g_array_unref(profiles);
 964         return FALSE;
 965     }
 966 }
 967
 968 static GstCaps *
 969 gst_vaapidecode_get_caps(GstPad *pad)
 970 {
 971     GstVaapiDecode * const decode = GST_VAAPIDECODE(GST_OBJECT_PARENT(pad));
 972
 973     if (!gst_vaapidecode_ensure_allowed_caps(decode))
 974         return gst_caps_new_empty();
 975
 976     return gst_caps_ref(decode->allowed_caps);
 977 }
 978
 979 static gboolean
 980 gst_vaapidecode_query(GST_PAD_QUERY_FUNCTION_ARGS)
 981 {
 982     GstVaapiDecode * const decode =
 983         GST_VAAPIDECODE(gst_pad_get_parent_element(pad));
 984     GstVaapiPluginBase * const plugin = GST_VAAPI_PLUGIN_BASE(decode);
 985     gboolean res;
 986
 987     GST_INFO_OBJECT(decode, "query type %s", GST_QUERY_TYPE_NAME(query));
 988
 989     if (gst_vaapi_reply_to_query(query, plugin->display)) {
 990         GST_DEBUG("sharing display %p", plugin->display);
 991         res = TRUE;
 992     }
 993     else if (GST_PAD_IS_SINK(pad)) {
 994         switch (GST_QUERY_TYPE(query)) {
 995 #if GST_CHECK_VERSION(1,0,0)
 996         case GST_QUERY_CAPS: {
 997             GstCaps * const caps = gst_vaapidecode_get_caps(pad);
 998             gst_query_set_caps_result(query, caps);
 999             gst_caps_unref(caps);
1000             res = TRUE;
1001             break;
1002         }
1003 #endif
1004         default:
1005             res = GST_PAD_QUERY_FUNCTION_CALL(plugin->sinkpad_query, pad,
1006                 parent, query);
1007             break;
1008         }
1009     }
1010     else
1011         res = GST_PAD_QUERY_FUNCTION_CALL(plugin->srcpad_query, pad,
1012             parent, query);
1013
1014     gst_object_unref(decode);
1015     return res;
1016 }
1017
1018 static void
1019 gst_vaapidecode_init(GstVaapiDecode *decode)
1020 {
1021     GstVideoDecoder * const vdec = GST_VIDEO_DECODER(decode);
1022     GstPad *pad;
1023
1024     gst_vaapi_plugin_base_init(GST_VAAPI_PLUGIN_BASE(decode), GST_CAT_DEFAULT);
1025
1026     decode->decoder             = NULL;
1027     decode->decoder_caps        = NULL;
1028     decode->allowed_caps        = NULL;
1029     decode->decoder_loop_status = GST_FLOW_OK;
1030
1031     g_mutex_init(&decode->decoder_mutex);
1032     g_cond_init(&decode->decoder_ready);
1033     g_cond_init(&decode->decoder_finish_done);
1034
1035     gst_video_decoder_set_packetized(vdec, FALSE);
1036
1037     /* Pad through which data comes in to the element */
1038     pad = GST_VAAPI_PLUGIN_BASE_SINK_PAD(decode);
1039     gst_pad_set_query_function(pad, gst_vaapidecode_query);
1040 #if !GST_CHECK_VERSION(1,0,0)
1041     gst_pad_set_getcaps_function(pad, gst_vaapidecode_get_caps);
1042 #endif
1043
1044     /* Pad through which data goes out of the element */
1045     pad = GST_VAAPI_PLUGIN_BASE_SRC_PAD(decode);
1046     gst_pad_set_query_function(pad, gst_vaapidecode_query);
1047 }