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| 1 // Copyright 2014 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include <algorithm> | |
| 6 | |
| 7 #include <CoreVideo/CoreVideo.h> | |
| 8 #include <OpenGL/CGLIOSurface.h> | |
| 9 #include <OpenGL/gl.h> | |
| 10 | |
| 11 #include "base/bind.h" | |
| 12 #include "base/command_line.h" | |
| 13 #include "base/logging.h" | |
| 14 #include "base/mac/mac_logging.h" | |
| 15 #include "base/metrics/histogram_macros.h" | |
| 16 #include "base/sys_byteorder.h" | |
| 17 #include "base/sys_info.h" | |
| 18 #include "base/thread_task_runner_handle.h" | |
| 19 #include "base/version.h" | |
| 20 #include "content/common/gpu/media/vt_video_decode_accelerator.h" | |
| 21 #include "content/public/common/content_switches.h" | |
| 22 #include "media/base/limits.h" | |
| 23 #include "ui/gl/gl_context.h" | |
| 24 #include "ui/gl/gl_image_io_surface.h" | |
| 25 #include "ui/gl/gl_implementation.h" | |
| 26 #include "ui/gl/scoped_binders.h" | |
| 27 | |
| 28 using content_common_gpu_media::kModuleVt; | |
| 29 using content_common_gpu_media::InitializeStubs; | |
| 30 using content_common_gpu_media::IsVtInitialized; | |
| 31 using content_common_gpu_media::StubPathMap; | |
| 32 | |
| 33 #define NOTIFY_STATUS(name, status, session_failure) \ | |
| 34 do { \ | |
| 35 OSSTATUS_DLOG(ERROR, status) << name; \ | |
| 36 NotifyError(PLATFORM_FAILURE, session_failure); \ | |
| 37 } while (0) | |
| 38 | |
| 39 namespace content { | |
| 40 | |
| 41 // Only H.264 with 4:2:0 chroma sampling is supported. | |
| 42 static const media::VideoCodecProfile kSupportedProfiles[] = { | |
| 43 media::H264PROFILE_BASELINE, | |
| 44 media::H264PROFILE_MAIN, | |
| 45 media::H264PROFILE_EXTENDED, | |
| 46 media::H264PROFILE_HIGH, | |
| 47 media::H264PROFILE_HIGH10PROFILE, | |
| 48 media::H264PROFILE_SCALABLEBASELINE, | |
| 49 media::H264PROFILE_SCALABLEHIGH, | |
| 50 media::H264PROFILE_STEREOHIGH, | |
| 51 media::H264PROFILE_MULTIVIEWHIGH, | |
| 52 }; | |
| 53 | |
| 54 // Size to use for NALU length headers in AVC format (can be 1, 2, or 4). | |
| 55 static const int kNALUHeaderLength = 4; | |
| 56 | |
| 57 // We request 5 picture buffers from the client, each of which has a texture ID | |
| 58 // that we can bind decoded frames to. We need enough to satisfy preroll, and | |
| 59 // enough to avoid unnecessary stalling, but no more than that. The resource | |
| 60 // requirements are low, as we don't need the textures to be backed by storage. | |
| 61 static const int kNumPictureBuffers = media::limits::kMaxVideoFrames + 1; | |
| 62 | |
| 63 // Maximum number of frames to queue for reordering before we stop asking for | |
| 64 // more. (NotifyEndOfBitstreamBuffer() is called when frames are moved into the | |
| 65 // reorder queue.) | |
| 66 static const int kMaxReorderQueueSize = 16; | |
| 67 | |
| 68 // Build an |image_config| dictionary for VideoToolbox initialization. | |
| 69 static base::ScopedCFTypeRef<CFMutableDictionaryRef> | |
| 70 BuildImageConfig(CMVideoDimensions coded_dimensions) { | |
| 71 base::ScopedCFTypeRef<CFMutableDictionaryRef> image_config; | |
| 72 | |
| 73 // 4:2:2 is used over the native 4:2:0 because only 4:2:2 can be directly | |
| 74 // bound to a texture by CGLTexImageIOSurface2D(). | |
| 75 int32_t pixel_format = kCVPixelFormatType_422YpCbCr8; | |
| 76 #define CFINT(i) CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &i) | |
| 77 base::ScopedCFTypeRef<CFNumberRef> cf_pixel_format(CFINT(pixel_format)); | |
| 78 base::ScopedCFTypeRef<CFNumberRef> cf_width(CFINT(coded_dimensions.width)); | |
| 79 base::ScopedCFTypeRef<CFNumberRef> cf_height(CFINT(coded_dimensions.height)); | |
| 80 #undef CFINT | |
| 81 if (!cf_pixel_format.get() || !cf_width.get() || !cf_height.get()) | |
| 82 return image_config; | |
| 83 | |
| 84 image_config.reset( | |
| 85 CFDictionaryCreateMutable( | |
| 86 kCFAllocatorDefault, | |
| 87 4, // capacity | |
| 88 &kCFTypeDictionaryKeyCallBacks, | |
| 89 &kCFTypeDictionaryValueCallBacks)); | |
| 90 if (!image_config.get()) | |
| 91 return image_config; | |
| 92 | |
| 93 CFDictionarySetValue(image_config, kCVPixelBufferPixelFormatTypeKey, | |
| 94 cf_pixel_format); | |
| 95 CFDictionarySetValue(image_config, kCVPixelBufferWidthKey, cf_width); | |
| 96 CFDictionarySetValue(image_config, kCVPixelBufferHeightKey, cf_height); | |
| 97 CFDictionarySetValue(image_config, kCVPixelBufferOpenGLCompatibilityKey, | |
| 98 kCFBooleanTrue); | |
| 99 | |
| 100 return image_config; | |
| 101 } | |
| 102 | |
| 103 // Create a VTDecompressionSession using the provided |pps| and |sps|. If | |
| 104 // |require_hardware| is true, the session must uses real hardware decoding | |
| 105 // (as opposed to software decoding inside of VideoToolbox) to be considered | |
| 106 // successful. | |
| 107 // | |
| 108 // TODO(sandersd): Merge with ConfigureDecoder(), as the code is very similar. | |
| 109 static bool CreateVideoToolboxSession(const uint8_t* sps, size_t sps_size, | |
| 110 const uint8_t* pps, size_t pps_size, | |
| 111 bool require_hardware) { | |
| 112 const uint8_t* data_ptrs[] = {sps, pps}; | |
| 113 const size_t data_sizes[] = {sps_size, pps_size}; | |
| 114 | |
| 115 base::ScopedCFTypeRef<CMFormatDescriptionRef> format; | |
| 116 OSStatus status = CMVideoFormatDescriptionCreateFromH264ParameterSets( | |
| 117 kCFAllocatorDefault, | |
| 118 2, // parameter_set_count | |
| 119 data_ptrs, // ¶meter_set_pointers | |
| 120 data_sizes, // ¶meter_set_sizes | |
| 121 kNALUHeaderLength, // nal_unit_header_length | |
| 122 format.InitializeInto()); | |
| 123 if (status) { | |
| 124 OSSTATUS_DLOG(WARNING, status) | |
| 125 << "Failed to create CMVideoFormatDescription."; | |
| 126 return false; | |
| 127 } | |
| 128 | |
| 129 base::ScopedCFTypeRef<CFMutableDictionaryRef> decoder_config( | |
| 130 CFDictionaryCreateMutable( | |
| 131 kCFAllocatorDefault, | |
| 132 1, // capacity | |
| 133 &kCFTypeDictionaryKeyCallBacks, | |
| 134 &kCFTypeDictionaryValueCallBacks)); | |
| 135 if (!decoder_config.get()) | |
| 136 return false; | |
| 137 | |
| 138 if (require_hardware) { | |
| 139 CFDictionarySetValue( | |
| 140 decoder_config, | |
| 141 // kVTVideoDecoderSpecification_RequireHardwareAcceleratedVideoDecoder | |
| 142 CFSTR("RequireHardwareAcceleratedVideoDecoder"), | |
| 143 kCFBooleanTrue); | |
| 144 } | |
| 145 | |
| 146 base::ScopedCFTypeRef<CFMutableDictionaryRef> image_config( | |
| 147 BuildImageConfig(CMVideoFormatDescriptionGetDimensions(format))); | |
| 148 if (!image_config.get()) | |
| 149 return false; | |
| 150 | |
| 151 VTDecompressionOutputCallbackRecord callback = {0}; | |
| 152 | |
| 153 base::ScopedCFTypeRef<VTDecompressionSessionRef> session; | |
| 154 status = VTDecompressionSessionCreate( | |
| 155 kCFAllocatorDefault, | |
| 156 format, // video_format_description | |
| 157 decoder_config, // video_decoder_specification | |
| 158 image_config, // destination_image_buffer_attributes | |
| 159 &callback, // output_callback | |
| 160 session.InitializeInto()); | |
| 161 if (status) { | |
| 162 OSSTATUS_DLOG(WARNING, status) << "Failed to create VTDecompressionSession"; | |
| 163 return false; | |
| 164 } | |
| 165 | |
| 166 return true; | |
| 167 } | |
| 168 | |
| 169 // The purpose of this function is to preload the generic and hardware-specific | |
| 170 // libraries required by VideoToolbox before the GPU sandbox is enabled. | |
| 171 // VideoToolbox normally loads the hardware-specific libraries lazily, so we | |
| 172 // must actually create a decompression session. If creating a decompression | |
| 173 // session fails, hardware decoding will be disabled (Initialize() will always | |
| 174 // return false). | |
| 175 static bool InitializeVideoToolboxInternal() { | |
| 176 if (base::CommandLine::ForCurrentProcess()->HasSwitch( | |
| 177 switches::kDisableAcceleratedVideoDecode)) { | |
| 178 return false; | |
| 179 } | |
| 180 | |
| 181 if (!IsVtInitialized()) { | |
| 182 // CoreVideo is also required, but the loader stops after the first path is | |
| 183 // loaded. Instead we rely on the transitive dependency from VideoToolbox to | |
| 184 // CoreVideo. | |
| 185 StubPathMap paths; | |
| 186 paths[kModuleVt].push_back(FILE_PATH_LITERAL( | |
| 187 "/System/Library/Frameworks/VideoToolbox.framework/VideoToolbox")); | |
| 188 if (!InitializeStubs(paths)) { | |
| 189 LOG(WARNING) << "Failed to initialize VideoToolbox framework. " | |
| 190 << "Hardware accelerated video decoding will be disabled."; | |
| 191 return false; | |
| 192 } | |
| 193 } | |
| 194 | |
| 195 // Create a hardware decoding session. | |
| 196 // SPS and PPS data are taken from a 480p sample (buck2.mp4). | |
| 197 const uint8_t sps_normal[] = {0x67, 0x64, 0x00, 0x1e, 0xac, 0xd9, 0x80, 0xd4, | |
| 198 0x3d, 0xa1, 0x00, 0x00, 0x03, 0x00, 0x01, 0x00, | |
| 199 0x00, 0x03, 0x00, 0x30, 0x8f, 0x16, 0x2d, 0x9a}; | |
| 200 const uint8_t pps_normal[] = {0x68, 0xe9, 0x7b, 0xcb}; | |
| 201 if (!CreateVideoToolboxSession(sps_normal, arraysize(sps_normal), pps_normal, | |
| 202 arraysize(pps_normal), true)) { | |
| 203 LOG(WARNING) << "Failed to create hardware VideoToolbox session. " | |
| 204 << "Hardware accelerated video decoding will be disabled."; | |
| 205 return false; | |
| 206 } | |
| 207 | |
| 208 // Create a software decoding session. | |
| 209 // SPS and PPS data are taken from a 18p sample (small2.mp4). | |
| 210 const uint8_t sps_small[] = {0x67, 0x64, 0x00, 0x0a, 0xac, 0xd9, 0x89, 0x7e, | |
| 211 0x22, 0x10, 0x00, 0x00, 0x3e, 0x90, 0x00, 0x0e, | |
| 212 0xa6, 0x08, 0xf1, 0x22, 0x59, 0xa0}; | |
| 213 const uint8_t pps_small[] = {0x68, 0xe9, 0x79, 0x72, 0xc0}; | |
| 214 if (!CreateVideoToolboxSession(sps_small, arraysize(sps_small), pps_small, | |
| 215 arraysize(pps_small), false)) { | |
| 216 LOG(WARNING) << "Failed to create software VideoToolbox session. " | |
| 217 << "Hardware accelerated video decoding will be disabled."; | |
| 218 return false; | |
| 219 } | |
| 220 | |
| 221 return true; | |
| 222 } | |
| 223 | |
| 224 bool InitializeVideoToolbox() { | |
| 225 // InitializeVideoToolbox() is called only from the GPU process main thread; | |
| 226 // once for sandbox warmup, and then once each time a VTVideoDecodeAccelerator | |
| 227 // is initialized. | |
| 228 static bool attempted = false; | |
| 229 static bool succeeded = false; | |
| 230 | |
| 231 if (!attempted) { | |
| 232 attempted = true; | |
| 233 succeeded = InitializeVideoToolboxInternal(); | |
| 234 } | |
| 235 | |
| 236 return succeeded; | |
| 237 } | |
| 238 | |
| 239 // Route decoded frame callbacks back into the VTVideoDecodeAccelerator. | |
| 240 static void OutputThunk( | |
| 241 void* decompression_output_refcon, | |
| 242 void* source_frame_refcon, | |
| 243 OSStatus status, | |
| 244 VTDecodeInfoFlags info_flags, | |
| 245 CVImageBufferRef image_buffer, | |
| 246 CMTime presentation_time_stamp, | |
| 247 CMTime presentation_duration) { | |
| 248 VTVideoDecodeAccelerator* vda = | |
| 249 reinterpret_cast<VTVideoDecodeAccelerator*>(decompression_output_refcon); | |
| 250 vda->Output(source_frame_refcon, status, image_buffer); | |
| 251 } | |
| 252 | |
| 253 VTVideoDecodeAccelerator::Task::Task(TaskType type) : type(type) { | |
| 254 } | |
| 255 | |
| 256 VTVideoDecodeAccelerator::Task::~Task() { | |
| 257 } | |
| 258 | |
| 259 VTVideoDecodeAccelerator::Frame::Frame(int32_t bitstream_id) | |
| 260 : bitstream_id(bitstream_id), | |
| 261 pic_order_cnt(0), | |
| 262 is_idr(false), | |
| 263 reorder_window(0) { | |
| 264 } | |
| 265 | |
| 266 VTVideoDecodeAccelerator::Frame::~Frame() { | |
| 267 } | |
| 268 | |
| 269 VTVideoDecodeAccelerator::PictureInfo::PictureInfo(uint32_t client_texture_id, | |
| 270 uint32_t service_texture_id) | |
| 271 : client_texture_id(client_texture_id), | |
| 272 service_texture_id(service_texture_id) {} | |
| 273 | |
| 274 VTVideoDecodeAccelerator::PictureInfo::~PictureInfo() { | |
| 275 if (gl_image) | |
| 276 gl_image->Destroy(false); | |
| 277 } | |
| 278 | |
| 279 bool VTVideoDecodeAccelerator::FrameOrder::operator()( | |
| 280 const linked_ptr<Frame>& lhs, | |
| 281 const linked_ptr<Frame>& rhs) const { | |
| 282 if (lhs->pic_order_cnt != rhs->pic_order_cnt) | |
| 283 return lhs->pic_order_cnt > rhs->pic_order_cnt; | |
| 284 // If |pic_order_cnt| is the same, fall back on using the bitstream order. | |
| 285 // TODO(sandersd): Assign a sequence number in Decode() and use that instead. | |
| 286 // TODO(sandersd): Using the sequence number, ensure that frames older than | |
| 287 // |kMaxReorderQueueSize| are ordered first, regardless of |pic_order_cnt|. | |
| 288 return lhs->bitstream_id > rhs->bitstream_id; | |
| 289 } | |
| 290 | |
| 291 VTVideoDecodeAccelerator::VTVideoDecodeAccelerator( | |
| 292 const base::Callback<bool(void)>& make_context_current, | |
| 293 const base::Callback<void(uint32, uint32, scoped_refptr<gl::GLImage>)>& | |
| 294 bind_image) | |
| 295 : make_context_current_(make_context_current), | |
| 296 bind_image_(bind_image), | |
| 297 client_(nullptr), | |
| 298 state_(STATE_DECODING), | |
| 299 format_(nullptr), | |
| 300 session_(nullptr), | |
| 301 last_sps_id_(-1), | |
| 302 last_pps_id_(-1), | |
| 303 gpu_task_runner_(base::ThreadTaskRunnerHandle::Get()), | |
| 304 decoder_thread_("VTDecoderThread"), | |
| 305 weak_this_factory_(this) { | |
| 306 DCHECK(!make_context_current_.is_null()); | |
| 307 callback_.decompressionOutputCallback = OutputThunk; | |
| 308 callback_.decompressionOutputRefCon = this; | |
| 309 weak_this_ = weak_this_factory_.GetWeakPtr(); | |
| 310 } | |
| 311 | |
| 312 VTVideoDecodeAccelerator::~VTVideoDecodeAccelerator() { | |
| 313 DCHECK(gpu_thread_checker_.CalledOnValidThread()); | |
| 314 } | |
| 315 | |
| 316 bool VTVideoDecodeAccelerator::Initialize( | |
| 317 media::VideoCodecProfile profile, | |
| 318 Client* client) { | |
| 319 DCHECK(gpu_thread_checker_.CalledOnValidThread()); | |
| 320 client_ = client; | |
| 321 | |
| 322 if (!InitializeVideoToolbox()) | |
| 323 return false; | |
| 324 | |
| 325 bool profile_supported = false; | |
| 326 for (const auto& supported_profile : kSupportedProfiles) { | |
| 327 if (profile == supported_profile) { | |
| 328 profile_supported = true; | |
| 329 break; | |
| 330 } | |
| 331 } | |
| 332 if (!profile_supported) | |
| 333 return false; | |
| 334 | |
| 335 // Spawn a thread to handle parsing and calling VideoToolbox. | |
| 336 if (!decoder_thread_.Start()) | |
| 337 return false; | |
| 338 | |
| 339 // Count the session as successfully initialized. | |
| 340 UMA_HISTOGRAM_ENUMERATION("Media.VTVDA.SessionFailureReason", | |
| 341 SFT_SUCCESSFULLY_INITIALIZED, | |
| 342 SFT_MAX + 1); | |
| 343 return true; | |
| 344 } | |
| 345 | |
| 346 bool VTVideoDecodeAccelerator::FinishDelayedFrames() { | |
| 347 DCHECK(decoder_thread_.task_runner()->BelongsToCurrentThread()); | |
| 348 if (session_) { | |
| 349 OSStatus status = VTDecompressionSessionWaitForAsynchronousFrames(session_); | |
| 350 if (status) { | |
| 351 NOTIFY_STATUS("VTDecompressionSessionWaitForAsynchronousFrames()", | |
| 352 status, SFT_PLATFORM_ERROR); | |
| 353 return false; | |
| 354 } | |
| 355 } | |
| 356 return true; | |
| 357 } | |
| 358 | |
| 359 bool VTVideoDecodeAccelerator::ConfigureDecoder() { | |
| 360 DCHECK(decoder_thread_.task_runner()->BelongsToCurrentThread()); | |
| 361 DCHECK(!last_sps_.empty()); | |
| 362 DCHECK(!last_pps_.empty()); | |
| 363 | |
| 364 // Build the configuration records. | |
| 365 std::vector<const uint8_t*> nalu_data_ptrs; | |
| 366 std::vector<size_t> nalu_data_sizes; | |
| 367 nalu_data_ptrs.reserve(3); | |
| 368 nalu_data_sizes.reserve(3); | |
| 369 nalu_data_ptrs.push_back(&last_sps_.front()); | |
| 370 nalu_data_sizes.push_back(last_sps_.size()); | |
| 371 if (!last_spsext_.empty()) { | |
| 372 nalu_data_ptrs.push_back(&last_spsext_.front()); | |
| 373 nalu_data_sizes.push_back(last_spsext_.size()); | |
| 374 } | |
| 375 nalu_data_ptrs.push_back(&last_pps_.front()); | |
| 376 nalu_data_sizes.push_back(last_pps_.size()); | |
| 377 | |
| 378 // Construct a new format description from the parameter sets. | |
| 379 format_.reset(); | |
| 380 OSStatus status = CMVideoFormatDescriptionCreateFromH264ParameterSets( | |
| 381 kCFAllocatorDefault, | |
| 382 nalu_data_ptrs.size(), // parameter_set_count | |
| 383 &nalu_data_ptrs.front(), // ¶meter_set_pointers | |
| 384 &nalu_data_sizes.front(), // ¶meter_set_sizes | |
| 385 kNALUHeaderLength, // nal_unit_header_length | |
| 386 format_.InitializeInto()); | |
| 387 if (status) { | |
| 388 NOTIFY_STATUS("CMVideoFormatDescriptionCreateFromH264ParameterSets()", | |
| 389 status, SFT_PLATFORM_ERROR); | |
| 390 return false; | |
| 391 } | |
| 392 | |
| 393 // Store the new configuration data. | |
| 394 // TODO(sandersd): Despite the documentation, this seems to return the visible | |
| 395 // size. However, the output always appears to be top-left aligned, so it | |
| 396 // makes no difference. Re-verify this and update the variable name. | |
| 397 CMVideoDimensions coded_dimensions = | |
| 398 CMVideoFormatDescriptionGetDimensions(format_); | |
| 399 coded_size_.SetSize(coded_dimensions.width, coded_dimensions.height); | |
| 400 | |
| 401 // Prepare VideoToolbox configuration dictionaries. | |
| 402 base::ScopedCFTypeRef<CFMutableDictionaryRef> decoder_config( | |
| 403 CFDictionaryCreateMutable( | |
| 404 kCFAllocatorDefault, | |
| 405 1, // capacity | |
| 406 &kCFTypeDictionaryKeyCallBacks, | |
| 407 &kCFTypeDictionaryValueCallBacks)); | |
| 408 if (!decoder_config.get()) { | |
| 409 DLOG(ERROR) << "Failed to create CFMutableDictionary."; | |
| 410 NotifyError(PLATFORM_FAILURE, SFT_PLATFORM_ERROR); | |
| 411 return false; | |
| 412 } | |
| 413 | |
| 414 CFDictionarySetValue( | |
| 415 decoder_config, | |
| 416 // kVTVideoDecoderSpecification_EnableHardwareAcceleratedVideoDecoder | |
| 417 CFSTR("EnableHardwareAcceleratedVideoDecoder"), | |
| 418 kCFBooleanTrue); | |
| 419 | |
| 420 base::ScopedCFTypeRef<CFMutableDictionaryRef> image_config( | |
| 421 BuildImageConfig(coded_dimensions)); | |
| 422 if (!image_config.get()) { | |
| 423 DLOG(ERROR) << "Failed to create decoder image configuration."; | |
| 424 NotifyError(PLATFORM_FAILURE, SFT_PLATFORM_ERROR); | |
| 425 return false; | |
| 426 } | |
| 427 | |
| 428 // Ensure that the old decoder emits all frames before the new decoder can | |
| 429 // emit any. | |
| 430 if (!FinishDelayedFrames()) | |
| 431 return false; | |
| 432 | |
| 433 session_.reset(); | |
| 434 status = VTDecompressionSessionCreate( | |
| 435 kCFAllocatorDefault, | |
| 436 format_, // video_format_description | |
| 437 decoder_config, // video_decoder_specification | |
| 438 image_config, // destination_image_buffer_attributes | |
| 439 &callback_, // output_callback | |
| 440 session_.InitializeInto()); | |
| 441 if (status) { | |
| 442 NOTIFY_STATUS("VTDecompressionSessionCreate()", status, | |
| 443 SFT_UNSUPPORTED_STREAM_PARAMETERS); | |
| 444 return false; | |
| 445 } | |
| 446 | |
| 447 // Report whether hardware decode is being used. | |
| 448 bool using_hardware = false; | |
| 449 base::ScopedCFTypeRef<CFBooleanRef> cf_using_hardware; | |
| 450 if (VTSessionCopyProperty( | |
| 451 session_, | |
| 452 // kVTDecompressionPropertyKey_UsingHardwareAcceleratedVideoDecoder | |
| 453 CFSTR("UsingHardwareAcceleratedVideoDecoder"), | |
| 454 kCFAllocatorDefault, | |
| 455 cf_using_hardware.InitializeInto()) == 0) { | |
| 456 using_hardware = CFBooleanGetValue(cf_using_hardware); | |
| 457 } | |
| 458 UMA_HISTOGRAM_BOOLEAN("Media.VTVDA.HardwareAccelerated", using_hardware); | |
| 459 | |
| 460 return true; | |
| 461 } | |
| 462 | |
| 463 void VTVideoDecodeAccelerator::DecodeTask( | |
| 464 const media::BitstreamBuffer& bitstream, | |
| 465 Frame* frame) { | |
| 466 DCHECK(decoder_thread_.task_runner()->BelongsToCurrentThread()); | |
| 467 | |
| 468 // Map the bitstream buffer. | |
| 469 base::SharedMemory memory(bitstream.handle(), true); | |
| 470 size_t size = bitstream.size(); | |
| 471 if (!memory.Map(size)) { | |
| 472 DLOG(ERROR) << "Failed to map bitstream buffer"; | |
| 473 NotifyError(PLATFORM_FAILURE, SFT_PLATFORM_ERROR); | |
| 474 return; | |
| 475 } | |
| 476 const uint8_t* buf = static_cast<uint8_t*>(memory.memory()); | |
| 477 | |
| 478 // NALUs are stored with Annex B format in the bitstream buffer (start codes), | |
| 479 // but VideoToolbox expects AVC format (length headers), so we must rewrite | |
| 480 // the data. | |
| 481 // | |
| 482 // Locate relevant NALUs and compute the size of the rewritten data. Also | |
| 483 // record any parameter sets for VideoToolbox initialization. | |
| 484 std::vector<uint8_t> sps; | |
| 485 std::vector<uint8_t> spsext; | |
| 486 std::vector<uint8_t> pps; | |
| 487 bool has_slice = false; | |
| 488 size_t data_size = 0; | |
| 489 std::vector<media::H264NALU> nalus; | |
| 490 parser_.SetStream(buf, size); | |
| 491 media::H264NALU nalu; | |
| 492 while (true) { | |
| 493 media::H264Parser::Result result = parser_.AdvanceToNextNALU(&nalu); | |
| 494 if (result == media::H264Parser::kEOStream) | |
| 495 break; | |
| 496 if (result == media::H264Parser::kUnsupportedStream) { | |
| 497 DLOG(ERROR) << "Unsupported H.264 stream"; | |
| 498 NotifyError(PLATFORM_FAILURE, SFT_UNSUPPORTED_STREAM); | |
| 499 return; | |
| 500 } | |
| 501 if (result != media::H264Parser::kOk) { | |
| 502 DLOG(ERROR) << "Failed to parse H.264 stream"; | |
| 503 NotifyError(UNREADABLE_INPUT, SFT_INVALID_STREAM); | |
| 504 return; | |
| 505 } | |
| 506 switch (nalu.nal_unit_type) { | |
| 507 case media::H264NALU::kSPS: | |
| 508 result = parser_.ParseSPS(&last_sps_id_); | |
| 509 if (result == media::H264Parser::kUnsupportedStream) { | |
| 510 DLOG(ERROR) << "Unsupported SPS"; | |
| 511 NotifyError(PLATFORM_FAILURE, SFT_UNSUPPORTED_STREAM); | |
| 512 return; | |
| 513 } | |
| 514 if (result != media::H264Parser::kOk) { | |
| 515 DLOG(ERROR) << "Could not parse SPS"; | |
| 516 NotifyError(UNREADABLE_INPUT, SFT_INVALID_STREAM); | |
| 517 return; | |
| 518 } | |
| 519 sps.assign(nalu.data, nalu.data + nalu.size); | |
| 520 spsext.clear(); | |
| 521 break; | |
| 522 | |
| 523 case media::H264NALU::kSPSExt: | |
| 524 // TODO(sandersd): Check that the previous NALU was an SPS. | |
| 525 spsext.assign(nalu.data, nalu.data + nalu.size); | |
| 526 break; | |
| 527 | |
| 528 case media::H264NALU::kPPS: | |
| 529 result = parser_.ParsePPS(&last_pps_id_); | |
| 530 if (result == media::H264Parser::kUnsupportedStream) { | |
| 531 DLOG(ERROR) << "Unsupported PPS"; | |
| 532 NotifyError(PLATFORM_FAILURE, SFT_UNSUPPORTED_STREAM); | |
| 533 return; | |
| 534 } | |
| 535 if (result != media::H264Parser::kOk) { | |
| 536 DLOG(ERROR) << "Could not parse PPS"; | |
| 537 NotifyError(UNREADABLE_INPUT, SFT_INVALID_STREAM); | |
| 538 return; | |
| 539 } | |
| 540 pps.assign(nalu.data, nalu.data + nalu.size); | |
| 541 break; | |
| 542 | |
| 543 case media::H264NALU::kSliceDataA: | |
| 544 case media::H264NALU::kSliceDataB: | |
| 545 case media::H264NALU::kSliceDataC: | |
| 546 case media::H264NALU::kNonIDRSlice: | |
| 547 case media::H264NALU::kIDRSlice: | |
| 548 // Compute the |pic_order_cnt| for the picture from the first slice. | |
| 549 if (!has_slice) { | |
| 550 media::H264SliceHeader slice_hdr; | |
| 551 result = parser_.ParseSliceHeader(nalu, &slice_hdr); | |
| 552 if (result == media::H264Parser::kUnsupportedStream) { | |
| 553 DLOG(ERROR) << "Unsupported slice header"; | |
| 554 NotifyError(PLATFORM_FAILURE, SFT_UNSUPPORTED_STREAM); | |
| 555 return; | |
| 556 } | |
| 557 if (result != media::H264Parser::kOk) { | |
| 558 DLOG(ERROR) << "Could not parse slice header"; | |
| 559 NotifyError(UNREADABLE_INPUT, SFT_INVALID_STREAM); | |
| 560 return; | |
| 561 } | |
| 562 | |
| 563 // TODO(sandersd): Maintain a cache of configurations and reconfigure | |
| 564 // when a slice references a new config. | |
| 565 DCHECK_EQ(slice_hdr.pic_parameter_set_id, last_pps_id_); | |
| 566 const media::H264PPS* pps = | |
| 567 parser_.GetPPS(slice_hdr.pic_parameter_set_id); | |
| 568 if (!pps) { | |
| 569 DLOG(ERROR) << "Mising PPS referenced by slice"; | |
| 570 NotifyError(UNREADABLE_INPUT, SFT_INVALID_STREAM); | |
| 571 return; | |
| 572 } | |
| 573 | |
| 574 DCHECK_EQ(pps->seq_parameter_set_id, last_sps_id_); | |
| 575 const media::H264SPS* sps = parser_.GetSPS(pps->seq_parameter_set_id); | |
| 576 if (!sps) { | |
| 577 DLOG(ERROR) << "Mising SPS referenced by PPS"; | |
| 578 NotifyError(UNREADABLE_INPUT, SFT_INVALID_STREAM); | |
| 579 return; | |
| 580 } | |
| 581 | |
| 582 if (!poc_.ComputePicOrderCnt(sps, slice_hdr, &frame->pic_order_cnt)) { | |
| 583 DLOG(ERROR) << "Unable to compute POC"; | |
| 584 NotifyError(UNREADABLE_INPUT, SFT_INVALID_STREAM); | |
| 585 return; | |
| 586 } | |
| 587 | |
| 588 if (nalu.nal_unit_type == media::H264NALU::kIDRSlice) | |
| 589 frame->is_idr = true; | |
| 590 | |
| 591 if (sps->vui_parameters_present_flag && | |
| 592 sps->bitstream_restriction_flag) { | |
| 593 frame->reorder_window = std::min(sps->max_num_reorder_frames, | |
| 594 kMaxReorderQueueSize - 1); | |
| 595 } | |
| 596 } | |
| 597 has_slice = true; | |
| 598 default: | |
| 599 nalus.push_back(nalu); | |
| 600 data_size += kNALUHeaderLength + nalu.size; | |
| 601 break; | |
| 602 } | |
| 603 } | |
| 604 | |
| 605 // Initialize VideoToolbox. | |
| 606 bool config_changed = false; | |
| 607 if (!sps.empty() && sps != last_sps_) { | |
| 608 last_sps_.swap(sps); | |
| 609 last_spsext_.swap(spsext); | |
| 610 config_changed = true; | |
| 611 } | |
| 612 if (!pps.empty() && pps != last_pps_) { | |
| 613 last_pps_.swap(pps); | |
| 614 config_changed = true; | |
| 615 } | |
| 616 if (config_changed) { | |
| 617 if (last_sps_.empty()) { | |
| 618 DLOG(ERROR) << "Invalid configuration; no SPS"; | |
| 619 NotifyError(INVALID_ARGUMENT, SFT_INVALID_STREAM); | |
| 620 return; | |
| 621 } | |
| 622 if (last_pps_.empty()) { | |
| 623 DLOG(ERROR) << "Invalid configuration; no PPS"; | |
| 624 NotifyError(INVALID_ARGUMENT, SFT_INVALID_STREAM); | |
| 625 return; | |
| 626 } | |
| 627 | |
| 628 // If it's not an IDR frame, we can't reconfigure the decoder anyway. We | |
| 629 // assume that any config change not on an IDR must be compatible. | |
| 630 if (frame->is_idr && !ConfigureDecoder()) | |
| 631 return; | |
| 632 } | |
| 633 | |
| 634 // If there are no image slices, drop the bitstream buffer by returning an | |
| 635 // empty frame. | |
| 636 if (!has_slice) { | |
| 637 if (!FinishDelayedFrames()) | |
| 638 return; | |
| 639 gpu_task_runner_->PostTask(FROM_HERE, base::Bind( | |
| 640 &VTVideoDecodeAccelerator::DecodeDone, weak_this_, frame)); | |
| 641 return; | |
| 642 } | |
| 643 | |
| 644 // If the session is not configured by this point, fail. | |
| 645 if (!session_) { | |
| 646 DLOG(ERROR) << "Cannot decode without configuration"; | |
| 647 NotifyError(INVALID_ARGUMENT, SFT_INVALID_STREAM); | |
| 648 return; | |
| 649 } | |
| 650 | |
| 651 // Update the frame metadata with configuration data. | |
| 652 frame->coded_size = coded_size_; | |
| 653 | |
| 654 // Create a memory-backed CMBlockBuffer for the translated data. | |
| 655 // TODO(sandersd): Pool of memory blocks. | |
| 656 base::ScopedCFTypeRef<CMBlockBufferRef> data; | |
| 657 OSStatus status = CMBlockBufferCreateWithMemoryBlock( | |
| 658 kCFAllocatorDefault, | |
| 659 nullptr, // &memory_block | |
| 660 data_size, // block_length | |
| 661 kCFAllocatorDefault, // block_allocator | |
| 662 nullptr, // &custom_block_source | |
| 663 0, // offset_to_data | |
| 664 data_size, // data_length | |
| 665 0, // flags | |
| 666 data.InitializeInto()); | |
| 667 if (status) { | |
| 668 NOTIFY_STATUS("CMBlockBufferCreateWithMemoryBlock()", status, | |
| 669 SFT_PLATFORM_ERROR); | |
| 670 return; | |
| 671 } | |
| 672 | |
| 673 // Make sure that the memory is actually allocated. | |
| 674 // CMBlockBufferReplaceDataBytes() is documented to do this, but prints a | |
| 675 // message each time starting in Mac OS X 10.10. | |
| 676 status = CMBlockBufferAssureBlockMemory(data); | |
| 677 if (status) { | |
| 678 NOTIFY_STATUS("CMBlockBufferAssureBlockMemory()", status, | |
| 679 SFT_PLATFORM_ERROR); | |
| 680 return; | |
| 681 } | |
| 682 | |
| 683 // Copy NALU data into the CMBlockBuffer, inserting length headers. | |
| 684 size_t offset = 0; | |
| 685 for (size_t i = 0; i < nalus.size(); i++) { | |
| 686 media::H264NALU& nalu = nalus[i]; | |
| 687 uint32_t header = base::HostToNet32(static_cast<uint32_t>(nalu.size)); | |
| 688 status = CMBlockBufferReplaceDataBytes( | |
| 689 &header, data, offset, kNALUHeaderLength); | |
| 690 if (status) { | |
| 691 NOTIFY_STATUS("CMBlockBufferReplaceDataBytes()", status, | |
| 692 SFT_PLATFORM_ERROR); | |
| 693 return; | |
| 694 } | |
| 695 offset += kNALUHeaderLength; | |
| 696 status = CMBlockBufferReplaceDataBytes(nalu.data, data, offset, nalu.size); | |
| 697 if (status) { | |
| 698 NOTIFY_STATUS("CMBlockBufferReplaceDataBytes()", status, | |
| 699 SFT_PLATFORM_ERROR); | |
| 700 return; | |
| 701 } | |
| 702 offset += nalu.size; | |
| 703 } | |
| 704 | |
| 705 // Package the data in a CMSampleBuffer. | |
| 706 base::ScopedCFTypeRef<CMSampleBufferRef> sample; | |
| 707 status = CMSampleBufferCreate( | |
| 708 kCFAllocatorDefault, | |
| 709 data, // data_buffer | |
| 710 true, // data_ready | |
| 711 nullptr, // make_data_ready_callback | |
| 712 nullptr, // make_data_ready_refcon | |
| 713 format_, // format_description | |
| 714 1, // num_samples | |
| 715 0, // num_sample_timing_entries | |
| 716 nullptr, // &sample_timing_array | |
| 717 1, // num_sample_size_entries | |
| 718 &data_size, // &sample_size_array | |
| 719 sample.InitializeInto()); | |
| 720 if (status) { | |
| 721 NOTIFY_STATUS("CMSampleBufferCreate()", status, SFT_PLATFORM_ERROR); | |
| 722 return; | |
| 723 } | |
| 724 | |
| 725 // Send the frame for decoding. | |
| 726 // Asynchronous Decompression allows for parallel submission of frames | |
| 727 // (without it, DecodeFrame() does not return until the frame has been | |
| 728 // decoded). We don't enable Temporal Processing so that frames are always | |
| 729 // returned in decode order; this makes it easier to avoid deadlock. | |
| 730 VTDecodeFrameFlags decode_flags = | |
| 731 kVTDecodeFrame_EnableAsynchronousDecompression; | |
| 732 status = VTDecompressionSessionDecodeFrame( | |
| 733 session_, | |
| 734 sample, // sample_buffer | |
| 735 decode_flags, // decode_flags | |
| 736 reinterpret_cast<void*>(frame), // source_frame_refcon | |
| 737 nullptr); // &info_flags_out | |
| 738 if (status) { | |
| 739 NOTIFY_STATUS("VTDecompressionSessionDecodeFrame()", status, | |
| 740 SFT_DECODE_ERROR); | |
| 741 return; | |
| 742 } | |
| 743 } | |
| 744 | |
| 745 // This method may be called on any VideoToolbox thread. | |
| 746 void VTVideoDecodeAccelerator::Output( | |
| 747 void* source_frame_refcon, | |
| 748 OSStatus status, | |
| 749 CVImageBufferRef image_buffer) { | |
| 750 if (status) { | |
| 751 NOTIFY_STATUS("Decoding", status, SFT_DECODE_ERROR); | |
| 752 return; | |
| 753 } | |
| 754 | |
| 755 // The type of |image_buffer| is CVImageBuffer, but we only handle | |
| 756 // CVPixelBuffers. This should be guaranteed as we set | |
| 757 // kCVPixelBufferOpenGLCompatibilityKey in |image_config|. | |
| 758 // | |
| 759 // Sometimes, for unknown reasons (http://crbug.com/453050), |image_buffer| is | |
| 760 // NULL, which causes CFGetTypeID() to crash. While the rest of the code would | |
| 761 // smoothly handle NULL as a dropped frame, we choose to fail permanantly here | |
| 762 // until the issue is better understood. | |
| 763 if (!image_buffer || CFGetTypeID(image_buffer) != CVPixelBufferGetTypeID()) { | |
| 764 DLOG(ERROR) << "Decoded frame is not a CVPixelBuffer"; | |
| 765 NotifyError(PLATFORM_FAILURE, SFT_DECODE_ERROR); | |
| 766 return; | |
| 767 } | |
| 768 | |
| 769 Frame* frame = reinterpret_cast<Frame*>(source_frame_refcon); | |
| 770 frame->image.reset(image_buffer, base::scoped_policy::RETAIN); | |
| 771 gpu_task_runner_->PostTask(FROM_HERE, base::Bind( | |
| 772 &VTVideoDecodeAccelerator::DecodeDone, weak_this_, frame)); | |
| 773 } | |
| 774 | |
| 775 void VTVideoDecodeAccelerator::DecodeDone(Frame* frame) { | |
| 776 DCHECK(gpu_thread_checker_.CalledOnValidThread()); | |
| 777 DCHECK_EQ(1u, pending_frames_.count(frame->bitstream_id)); | |
| 778 Task task(TASK_FRAME); | |
| 779 task.frame = pending_frames_[frame->bitstream_id]; | |
| 780 pending_frames_.erase(frame->bitstream_id); | |
| 781 task_queue_.push(task); | |
| 782 ProcessWorkQueues(); | |
| 783 } | |
| 784 | |
| 785 void VTVideoDecodeAccelerator::FlushTask(TaskType type) { | |
| 786 DCHECK(decoder_thread_.task_runner()->BelongsToCurrentThread()); | |
| 787 FinishDelayedFrames(); | |
| 788 | |
| 789 // Always queue a task, even if FinishDelayedFrames() fails, so that | |
| 790 // destruction always completes. | |
| 791 gpu_task_runner_->PostTask(FROM_HERE, base::Bind( | |
| 792 &VTVideoDecodeAccelerator::FlushDone, weak_this_, type)); | |
| 793 } | |
| 794 | |
| 795 void VTVideoDecodeAccelerator::FlushDone(TaskType type) { | |
| 796 DCHECK(gpu_thread_checker_.CalledOnValidThread()); | |
| 797 task_queue_.push(Task(type)); | |
| 798 ProcessWorkQueues(); | |
| 799 } | |
| 800 | |
| 801 void VTVideoDecodeAccelerator::Decode(const media::BitstreamBuffer& bitstream) { | |
| 802 DCHECK(gpu_thread_checker_.CalledOnValidThread()); | |
| 803 DCHECK_EQ(0u, assigned_bitstream_ids_.count(bitstream.id())); | |
| 804 assigned_bitstream_ids_.insert(bitstream.id()); | |
| 805 Frame* frame = new Frame(bitstream.id()); | |
| 806 pending_frames_[frame->bitstream_id] = make_linked_ptr(frame); | |
| 807 decoder_thread_.task_runner()->PostTask( | |
| 808 FROM_HERE, base::Bind(&VTVideoDecodeAccelerator::DecodeTask, | |
| 809 base::Unretained(this), bitstream, frame)); | |
| 810 } | |
| 811 | |
| 812 void VTVideoDecodeAccelerator::AssignPictureBuffers( | |
| 813 const std::vector<media::PictureBuffer>& pictures) { | |
| 814 DCHECK(gpu_thread_checker_.CalledOnValidThread()); | |
| 815 | |
| 816 for (const media::PictureBuffer& picture : pictures) { | |
| 817 DCHECK(!picture_info_map_.count(picture.id())); | |
| 818 assigned_picture_ids_.insert(picture.id()); | |
| 819 available_picture_ids_.push_back(picture.id()); | |
| 820 picture_info_map_.insert(std::make_pair( | |
| 821 picture.id(), | |
| 822 make_scoped_ptr(new PictureInfo(picture.internal_texture_id(), | |
| 823 picture.texture_id())))); | |
| 824 } | |
| 825 | |
| 826 // Pictures are not marked as uncleared until after this method returns, and | |
| 827 // they will be broken if they are used before that happens. So, schedule | |
| 828 // future work after that happens. | |
| 829 gpu_task_runner_->PostTask(FROM_HERE, base::Bind( | |
| 830 &VTVideoDecodeAccelerator::ProcessWorkQueues, weak_this_)); | |
| 831 } | |
| 832 | |
| 833 void VTVideoDecodeAccelerator::ReusePictureBuffer(int32_t picture_id) { | |
| 834 DCHECK(gpu_thread_checker_.CalledOnValidThread()); | |
| 835 DCHECK(picture_info_map_.count(picture_id)); | |
| 836 PictureInfo* picture_info = picture_info_map_.find(picture_id)->second.get(); | |
| 837 DCHECK_EQ(CFGetRetainCount(picture_info->cv_image), 1); | |
| 838 picture_info->cv_image.reset(); | |
| 839 picture_info->gl_image->Destroy(false); | |
| 840 picture_info->gl_image = nullptr; | |
| 841 | |
| 842 if (assigned_picture_ids_.count(picture_id) != 0) { | |
| 843 available_picture_ids_.push_back(picture_id); | |
| 844 ProcessWorkQueues(); | |
| 845 } else { | |
| 846 client_->DismissPictureBuffer(picture_id); | |
| 847 } | |
| 848 } | |
| 849 | |
| 850 void VTVideoDecodeAccelerator::ProcessWorkQueues() { | |
| 851 DCHECK(gpu_thread_checker_.CalledOnValidThread()); | |
| 852 switch (state_) { | |
| 853 case STATE_DECODING: | |
| 854 // TODO(sandersd): Batch where possible. | |
| 855 while (state_ == STATE_DECODING) { | |
| 856 if (!ProcessReorderQueue() && !ProcessTaskQueue()) | |
| 857 break; | |
| 858 } | |
| 859 return; | |
| 860 | |
| 861 case STATE_ERROR: | |
| 862 // Do nothing until Destroy() is called. | |
| 863 return; | |
| 864 | |
| 865 case STATE_DESTROYING: | |
| 866 // Drop tasks until we are ready to destruct. | |
| 867 while (!task_queue_.empty()) { | |
| 868 if (task_queue_.front().type == TASK_DESTROY) { | |
| 869 delete this; | |
| 870 return; | |
| 871 } | |
| 872 task_queue_.pop(); | |
| 873 } | |
| 874 return; | |
| 875 } | |
| 876 } | |
| 877 | |
| 878 bool VTVideoDecodeAccelerator::ProcessTaskQueue() { | |
| 879 DCHECK(gpu_thread_checker_.CalledOnValidThread()); | |
| 880 DCHECK_EQ(state_, STATE_DECODING); | |
| 881 | |
| 882 if (task_queue_.empty()) | |
| 883 return false; | |
| 884 | |
| 885 const Task& task = task_queue_.front(); | |
| 886 switch (task.type) { | |
| 887 case TASK_FRAME: | |
| 888 if (reorder_queue_.size() < kMaxReorderQueueSize && | |
| 889 (!task.frame->is_idr || reorder_queue_.empty())) { | |
| 890 assigned_bitstream_ids_.erase(task.frame->bitstream_id); | |
| 891 client_->NotifyEndOfBitstreamBuffer(task.frame->bitstream_id); | |
| 892 reorder_queue_.push(task.frame); | |
| 893 task_queue_.pop(); | |
| 894 return true; | |
| 895 } | |
| 896 return false; | |
| 897 | |
| 898 case TASK_FLUSH: | |
| 899 DCHECK_EQ(task.type, pending_flush_tasks_.front()); | |
| 900 if (reorder_queue_.size() == 0) { | |
| 901 pending_flush_tasks_.pop(); | |
| 902 client_->NotifyFlushDone(); | |
| 903 task_queue_.pop(); | |
| 904 return true; | |
| 905 } | |
| 906 return false; | |
| 907 | |
| 908 case TASK_RESET: | |
| 909 DCHECK_EQ(task.type, pending_flush_tasks_.front()); | |
| 910 if (reorder_queue_.size() == 0) { | |
| 911 last_sps_id_ = -1; | |
| 912 last_pps_id_ = -1; | |
| 913 last_sps_.clear(); | |
| 914 last_spsext_.clear(); | |
| 915 last_pps_.clear(); | |
| 916 poc_.Reset(); | |
| 917 pending_flush_tasks_.pop(); | |
| 918 client_->NotifyResetDone(); | |
| 919 task_queue_.pop(); | |
| 920 return true; | |
| 921 } | |
| 922 return false; | |
| 923 | |
| 924 case TASK_DESTROY: | |
| 925 NOTREACHED() << "Can't destroy while in STATE_DECODING."; | |
| 926 NotifyError(ILLEGAL_STATE, SFT_PLATFORM_ERROR); | |
| 927 return false; | |
| 928 } | |
| 929 } | |
| 930 | |
| 931 bool VTVideoDecodeAccelerator::ProcessReorderQueue() { | |
| 932 DCHECK(gpu_thread_checker_.CalledOnValidThread()); | |
| 933 DCHECK_EQ(state_, STATE_DECODING); | |
| 934 | |
| 935 if (reorder_queue_.empty()) | |
| 936 return false; | |
| 937 | |
| 938 // If the next task is a flush (because there is a pending flush or becuase | |
| 939 // the next frame is an IDR), then we don't need a full reorder buffer to send | |
| 940 // the next frame. | |
| 941 bool flushing = !task_queue_.empty() && | |
| 942 (task_queue_.front().type != TASK_FRAME || | |
| 943 task_queue_.front().frame->is_idr); | |
| 944 | |
| 945 size_t reorder_window = std::max(0, reorder_queue_.top()->reorder_window); | |
| 946 if (flushing || reorder_queue_.size() > reorder_window) { | |
| 947 if (ProcessFrame(*reorder_queue_.top())) { | |
| 948 reorder_queue_.pop(); | |
| 949 return true; | |
| 950 } | |
| 951 } | |
| 952 | |
| 953 return false; | |
| 954 } | |
| 955 | |
| 956 bool VTVideoDecodeAccelerator::ProcessFrame(const Frame& frame) { | |
| 957 DCHECK(gpu_thread_checker_.CalledOnValidThread()); | |
| 958 DCHECK_EQ(state_, STATE_DECODING); | |
| 959 | |
| 960 // If the next pending flush is for a reset, then the frame will be dropped. | |
| 961 bool resetting = !pending_flush_tasks_.empty() && | |
| 962 pending_flush_tasks_.front() == TASK_RESET; | |
| 963 | |
| 964 if (!resetting && frame.image.get()) { | |
| 965 // If the |coded_size| has changed, request new picture buffers and then | |
| 966 // wait for them. | |
| 967 // TODO(sandersd): If GpuVideoDecoder didn't specifically check the size of | |
| 968 // textures, this would be unnecessary, as the size is actually a property | |
| 969 // of the texture binding, not the texture. We rebind every frame, so the | |
| 970 // size passed to ProvidePictureBuffers() is meaningless. | |
| 971 if (picture_size_ != frame.coded_size) { | |
| 972 // Dismiss current pictures. | |
| 973 for (int32_t picture_id : assigned_picture_ids_) | |
| 974 client_->DismissPictureBuffer(picture_id); | |
| 975 assigned_picture_ids_.clear(); | |
| 976 available_picture_ids_.clear(); | |
| 977 | |
| 978 // Request new pictures. | |
| 979 picture_size_ = frame.coded_size; | |
| 980 client_->ProvidePictureBuffers( | |
| 981 kNumPictureBuffers, coded_size_, GL_TEXTURE_RECTANGLE_ARB); | |
| 982 return false; | |
| 983 } | |
| 984 if (!SendFrame(frame)) | |
| 985 return false; | |
| 986 } | |
| 987 | |
| 988 return true; | |
| 989 } | |
| 990 | |
| 991 bool VTVideoDecodeAccelerator::SendFrame(const Frame& frame) { | |
| 992 DCHECK(gpu_thread_checker_.CalledOnValidThread()); | |
| 993 DCHECK_EQ(state_, STATE_DECODING); | |
| 994 | |
| 995 if (available_picture_ids_.empty()) | |
| 996 return false; | |
| 997 | |
| 998 int32_t picture_id = available_picture_ids_.back(); | |
| 999 DCHECK(picture_info_map_.count(picture_id)); | |
| 1000 PictureInfo* picture_info = picture_info_map_.find(picture_id)->second.get(); | |
| 1001 DCHECK(!picture_info->cv_image); | |
| 1002 DCHECK(!picture_info->gl_image); | |
| 1003 | |
| 1004 if (!make_context_current_.Run()) { | |
| 1005 DLOG(ERROR) << "Failed to make GL context current"; | |
| 1006 NotifyError(PLATFORM_FAILURE, SFT_PLATFORM_ERROR); | |
| 1007 return false; | |
| 1008 } | |
| 1009 | |
| 1010 IOSurfaceRef surface = CVPixelBufferGetIOSurface(frame.image.get()); | |
| 1011 if (gfx::GetGLImplementation() != gfx::kGLImplementationDesktopGLCoreProfile) | |
| 1012 glEnable(GL_TEXTURE_RECTANGLE_ARB); | |
| 1013 gfx::ScopedTextureBinder texture_binder(GL_TEXTURE_RECTANGLE_ARB, | |
| 1014 picture_info->service_texture_id); | |
| 1015 CGLContextObj cgl_context = | |
| 1016 static_cast<CGLContextObj>(gfx::GLContext::GetCurrent()->GetHandle()); | |
| 1017 CGLError status = CGLTexImageIOSurface2D( | |
| 1018 cgl_context, // ctx | |
| 1019 GL_TEXTURE_RECTANGLE_ARB, // target | |
| 1020 GL_RGB, // internal_format | |
| 1021 frame.coded_size.width(), // width | |
| 1022 frame.coded_size.height(), // height | |
| 1023 GL_YCBCR_422_APPLE, // format | |
| 1024 GL_UNSIGNED_SHORT_8_8_APPLE, // type | |
| 1025 surface, // io_surface | |
| 1026 0); // plane | |
| 1027 if (gfx::GetGLImplementation() != gfx::kGLImplementationDesktopGLCoreProfile) | |
| 1028 glDisable(GL_TEXTURE_RECTANGLE_ARB); | |
| 1029 if (status != kCGLNoError) { | |
| 1030 NOTIFY_STATUS("CGLTexImageIOSurface2D()", status, SFT_PLATFORM_ERROR); | |
| 1031 return false; | |
| 1032 } | |
| 1033 | |
| 1034 bool allow_overlay = false; | |
| 1035 scoped_refptr<gl::GLImageIOSurface> gl_image( | |
| 1036 new gl::GLImageIOSurface(frame.coded_size, GL_BGRA_EXT)); | |
| 1037 if (gl_image->Initialize(surface, gfx::GenericSharedMemoryId(), | |
| 1038 gfx::BufferFormat::BGRA_8888)) { | |
| 1039 allow_overlay = true; | |
| 1040 } else { | |
| 1041 gl_image = nullptr; | |
| 1042 } | |
| 1043 bind_image_.Run(picture_info->client_texture_id, GL_TEXTURE_RECTANGLE_ARB, | |
| 1044 gl_image); | |
| 1045 | |
| 1046 // Assign the new image(s) to the the picture info. | |
| 1047 picture_info->gl_image = gl_image; | |
| 1048 picture_info->cv_image = frame.image; | |
| 1049 available_picture_ids_.pop_back(); | |
| 1050 | |
| 1051 // TODO(sandersd): Currently, the size got from | |
| 1052 // CMVideoFormatDescriptionGetDimensions is visible size. We pass it to | |
| 1053 // GpuVideoDecoder so that GpuVideoDecoder can use correct visible size in | |
| 1054 // resolution changed. We should find the correct API to get the real | |
| 1055 // coded size and fix it. | |
| 1056 client_->PictureReady(media::Picture(picture_id, frame.bitstream_id, | |
| 1057 gfx::Rect(frame.coded_size), | |
| 1058 allow_overlay)); | |
| 1059 return true; | |
| 1060 } | |
| 1061 | |
| 1062 void VTVideoDecodeAccelerator::NotifyError( | |
| 1063 Error vda_error_type, | |
| 1064 VTVDASessionFailureType session_failure_type) { | |
| 1065 DCHECK_LT(session_failure_type, SFT_MAX + 1); | |
| 1066 if (!gpu_thread_checker_.CalledOnValidThread()) { | |
| 1067 gpu_task_runner_->PostTask(FROM_HERE, base::Bind( | |
| 1068 &VTVideoDecodeAccelerator::NotifyError, weak_this_, vda_error_type, | |
| 1069 session_failure_type)); | |
| 1070 } else if (state_ == STATE_DECODING) { | |
| 1071 state_ = STATE_ERROR; | |
| 1072 UMA_HISTOGRAM_ENUMERATION("Media.VTVDA.SessionFailureReason", | |
| 1073 session_failure_type, | |
| 1074 SFT_MAX + 1); | |
| 1075 client_->NotifyError(vda_error_type); | |
| 1076 } | |
| 1077 } | |
| 1078 | |
| 1079 void VTVideoDecodeAccelerator::QueueFlush(TaskType type) { | |
| 1080 DCHECK(gpu_thread_checker_.CalledOnValidThread()); | |
| 1081 pending_flush_tasks_.push(type); | |
| 1082 decoder_thread_.task_runner()->PostTask( | |
| 1083 FROM_HERE, base::Bind(&VTVideoDecodeAccelerator::FlushTask, | |
| 1084 base::Unretained(this), type)); | |
| 1085 | |
| 1086 // If this is a new flush request, see if we can make progress. | |
| 1087 if (pending_flush_tasks_.size() == 1) | |
| 1088 ProcessWorkQueues(); | |
| 1089 } | |
| 1090 | |
| 1091 void VTVideoDecodeAccelerator::Flush() { | |
| 1092 DCHECK(gpu_thread_checker_.CalledOnValidThread()); | |
| 1093 QueueFlush(TASK_FLUSH); | |
| 1094 } | |
| 1095 | |
| 1096 void VTVideoDecodeAccelerator::Reset() { | |
| 1097 DCHECK(gpu_thread_checker_.CalledOnValidThread()); | |
| 1098 QueueFlush(TASK_RESET); | |
| 1099 } | |
| 1100 | |
| 1101 void VTVideoDecodeAccelerator::Destroy() { | |
| 1102 DCHECK(gpu_thread_checker_.CalledOnValidThread()); | |
| 1103 | |
| 1104 // In a forceful shutdown, the decoder thread may be dead already. | |
| 1105 if (!decoder_thread_.IsRunning()) { | |
| 1106 delete this; | |
| 1107 return; | |
| 1108 } | |
| 1109 | |
| 1110 // For a graceful shutdown, return assigned buffers and flush before | |
| 1111 // destructing |this|. | |
| 1112 // TODO(sandersd): Prevent the decoder from reading buffers before discarding | |
| 1113 // them. | |
| 1114 for (int32_t bitstream_id : assigned_bitstream_ids_) | |
| 1115 client_->NotifyEndOfBitstreamBuffer(bitstream_id); | |
| 1116 assigned_bitstream_ids_.clear(); | |
| 1117 state_ = STATE_DESTROYING; | |
| 1118 QueueFlush(TASK_DESTROY); | |
| 1119 } | |
| 1120 | |
| 1121 bool VTVideoDecodeAccelerator::CanDecodeOnIOThread() { | |
| 1122 return false; | |
| 1123 } | |
| 1124 | |
| 1125 // static | |
| 1126 media::VideoDecodeAccelerator::SupportedProfiles | |
| 1127 VTVideoDecodeAccelerator::GetSupportedProfiles() { | |
| 1128 SupportedProfiles profiles; | |
| 1129 for (const auto& supported_profile : kSupportedProfiles) { | |
| 1130 SupportedProfile profile; | |
| 1131 profile.profile = supported_profile; | |
| 1132 profile.min_resolution.SetSize(16, 16); | |
| 1133 profile.max_resolution.SetSize(4096, 2160); | |
| 1134 profiles.push_back(profile); | |
| 1135 } | |
| 1136 return profiles; | |
| 1137 } | |
| 1138 | |
| 1139 } // namespace content | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 1474823002:
content/common/gpu/media add platform suffix to some files (cleanup) (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master