media/base/android/media_codec_bridge.cc

   1 // Copyright (c) 2013 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 "media/base/android/media_codec_bridge.h"
   6
   7
   8 #include "base/android/build_info.h"
   9 #include "base/android/jni_android.h"
  10 #include "base/android/jni_array.h"
  11 #include "base/android/jni_string.h"
  12 #include "base/basictypes.h"
  13 #include "base/lazy_instance.h"
  14 #include "base/logging.h"
  15 #include "base/numerics/safe_conversions.h"
  16 #include "base/strings/string_util.h"
  17 #include "base/strings/stringprintf.h"
  18 #include "jni/MediaCodecBridge_jni.h"
  19 #include "media/base/bit_reader.h"
  20 #include "media/base/decrypt_config.h"
  21
  22 using base::android::AttachCurrentThread;
  23 using base::android::ConvertJavaStringToUTF8;
  24 using base::android::ConvertUTF8ToJavaString;
  25 using base::android::JavaIntArrayToIntVector;
  26 using base::android::ScopedJavaLocalRef;
  27
  28 namespace media {
  29
  30 enum {
  31   kBufferFlagSyncFrame = 1,    // BUFFER_FLAG_SYNC_FRAME
  32   kBufferFlagEndOfStream = 4,  // BUFFER_FLAG_END_OF_STREAM
  33   kConfigureFlagEncode = 1,    // CONFIGURE_FLAG_ENCODE
  34 };
  35
  36 static const std::string AudioCodecToAndroidMimeType(const AudioCodec& codec) {
  37   switch (codec) {
  38     case kCodecMP3:
  39       return "audio/mpeg";
  40     case kCodecVorbis:
  41       return "audio/vorbis";
  42     case kCodecOpus:
  43       return "audio/opus";
  44     case kCodecAAC:
  45       return "audio/mp4a-latm";
  46     default:
  47       return std::string();
  48   }
  49 }
  50
  51 static const std::string VideoCodecToAndroidMimeType(const VideoCodec& codec) {
  52   switch (codec) {
  53     case kCodecH264:
  54       return "video/avc";
  55     case kCodecVP8:
  56       return "video/x-vnd.on2.vp8";
  57     case kCodecVP9:
  58       return "video/x-vnd.on2.vp9";
  59     default:
  60       return std::string();
  61   }
  62 }
  63
  64 static const std::string CodecTypeToAndroidMimeType(const std::string& codec) {
  65   // TODO(xhwang): Shall we handle more detailed strings like "mp4a.40.2"?
  66   if (codec == "avc1")
  67     return "video/avc";
  68   if (codec == "mp4a")
  69     return "audio/mp4a-latm";
  70   if (codec == "vp8" || codec == "vp8.0")
  71     return "video/x-vnd.on2.vp8";
  72   if (codec == "vp9" || codec == "vp9.0")
  73     return "video/x-vnd.on2.vp9";
  74   if (codec == "vorbis")
  75     return "audio/vorbis";
  76   if (codec == "opus")
  77     return "audio/opus";
  78   return std::string();
  79 }
  80
  81 // TODO(qinmin): using a map to help all the conversions in this class.
  82 static const std::string AndroidMimeTypeToCodecType(const std::string& mime) {
  83   if (mime == "video/mp4v-es")
  84     return "mp4v";
  85   if (mime == "video/avc")
  86     return "avc1";
  87   if (mime == "video/x-vnd.on2.vp8")
  88     return "vp8";
  89   if (mime == "video/x-vnd.on2.vp9")
  90     return "vp9";
  91   if (mime == "audio/mp4a-latm")
  92     return "mp4a";
  93   if (mime == "audio/mpeg")
  94     return "mp3";
  95   if (mime == "audio/vorbis")
  96     return "vorbis";
  97   if (mime == "audio/opus")
  98     return "opus";
  99   return std::string();
 100 }
 101
 102 static ScopedJavaLocalRef<jintArray>
 103 ToJavaIntArray(JNIEnv* env, scoped_ptr<jint[]> native_array, int size) {
 104   ScopedJavaLocalRef<jintArray> j_array(env, env->NewIntArray(size));
 105   env->SetIntArrayRegion(j_array.obj(), 0, size, native_array.get());
 106   return j_array;
 107 }
 108
 109 // static
 110 bool MediaCodecBridge::IsAvailable() {
 111   // MediaCodec is only available on JB and greater.
 112   if (base::android::BuildInfo::GetInstance()->sdk_int() < 16)
 113     return false;
 114   // Blacklist some devices on Jellybean as for MediaCodec support is buggy.
 115   // http://crbug.com/365494.
 116   if (base::android::BuildInfo::GetInstance()->sdk_int() == 16) {
 117     std::string model(base::android::BuildInfo::GetInstance()->model());
 118     return model != "GT-I9100" && model != "GT-I9300" && model != "GT-N7000";
 119   }
 120   return true;
 121 }
 122
 123 // static
 124 bool MediaCodecBridge::SupportsSetParameters() {
 125   // MediaCodec.setParameters() is only available starting with K.
 126   return base::android::BuildInfo::GetInstance()->sdk_int() >= 19;
 127 }
 128
 129 // static
 130 bool MediaCodecBridge::SupportsGetName() {
 131   // MediaCodec.getName() is only available on JB MR2 and greater.
 132   return base::android::BuildInfo::GetInstance()->sdk_int() >= 18;
 133 }
 134
 135 // static
 136 std::vector<MediaCodecBridge::CodecsInfo> MediaCodecBridge::GetCodecsInfo() {
 137   std::vector<CodecsInfo> codecs_info;
 138   if (!IsAvailable())
 139     return codecs_info;
 140
 141   JNIEnv* env = AttachCurrentThread();
 142   std::string mime_type;
 143   ScopedJavaLocalRef<jobjectArray> j_codec_info_array =
 144       Java_MediaCodecBridge_getCodecsInfo(env);
 145   jsize len = env->GetArrayLength(j_codec_info_array.obj());
 146   for (jsize i = 0; i < len; ++i) {
 147     ScopedJavaLocalRef<jobject> j_info(
 148         env, env->GetObjectArrayElement(j_codec_info_array.obj(), i));
 149     ScopedJavaLocalRef<jstring> j_codec_type =
 150         Java_CodecInfo_codecType(env, j_info.obj());
 151     ConvertJavaStringToUTF8(env, j_codec_type.obj(), &mime_type);
 152     ScopedJavaLocalRef<jstring> j_codec_name =
 153         Java_CodecInfo_codecName(env, j_info.obj());
 154     CodecsInfo info;
 155     info.codecs = AndroidMimeTypeToCodecType(mime_type);
 156     ConvertJavaStringToUTF8(env, j_codec_name.obj(), &info.name);
 157     info.direction = static_cast<MediaCodecDirection>(
 158         Java_CodecInfo_direction(env, j_info.obj()));
 159     codecs_info.push_back(info);
 160   }
 161   return codecs_info;
 162 }
 163
 164 // static
 165 std::string MediaCodecBridge::GetDefaultCodecName(
 166     const std::string& mime_type,
 167     MediaCodecDirection direction) {
 168   if (!IsAvailable())
 169     return std::string();
 170
 171   JNIEnv* env = AttachCurrentThread();
 172   ScopedJavaLocalRef<jstring> j_mime = ConvertUTF8ToJavaString(env, mime_type);
 173   ScopedJavaLocalRef<jstring> j_codec_name =
 174       Java_MediaCodecBridge_getDefaultCodecName(env, j_mime.obj(), direction);
 175   return ConvertJavaStringToUTF8(env, j_codec_name.obj());
 176 }
 177
 178 // static
 179 std::set<int> MediaCodecBridge::GetEncoderColorFormats(
 180     const std::string& mime_type) {
 181   std::set<int> color_formats;
 182   if (!IsAvailable())
 183     return color_formats;
 184
 185   JNIEnv* env = AttachCurrentThread();
 186   ScopedJavaLocalRef<jstring> j_mime = ConvertUTF8ToJavaString(env, mime_type);
 187   ScopedJavaLocalRef<jintArray> j_color_format_array =
 188       Java_MediaCodecBridge_getEncoderColorFormatsForMime(env, j_mime.obj());
 189
 190   if (j_color_format_array.obj()) {
 191     std::vector<int> formats;
 192     JavaIntArrayToIntVector(env, j_color_format_array.obj(), &formats);
 193     color_formats = std::set<int>(formats.begin(), formats.end());
 194   }
 195
 196   return color_formats;
 197 }
 198
 199 // static
 200 bool MediaCodecBridge::CanDecode(const std::string& codec, bool is_secure) {
 201   if (!IsAvailable())
 202     return false;
 203
 204   JNIEnv* env = AttachCurrentThread();
 205   std::string mime = CodecTypeToAndroidMimeType(codec);
 206   if (mime.empty())
 207     return false;
 208   ScopedJavaLocalRef<jstring> j_mime = ConvertUTF8ToJavaString(env, mime);
 209   ScopedJavaLocalRef<jobject> j_media_codec_bridge =
 210       Java_MediaCodecBridge_create(env, j_mime.obj(), is_secure, false);
 211   if (!j_media_codec_bridge.is_null()) {
 212     Java_MediaCodecBridge_release(env, j_media_codec_bridge.obj());
 213     return true;
 214   }
 215   return false;
 216 }
 217
 218 // static
 219 bool MediaCodecBridge::IsKnownUnaccelerated(const std::string& mime_type,
 220                                             MediaCodecDirection direction) {
 221   if (!IsAvailable())
 222     return true;
 223
 224   std::string codec_name;
 225   if (SupportsGetName()) {
 226     codec_name = GetDefaultCodecName(mime_type, direction);
 227   } else {
 228     std::string codec_type = AndroidMimeTypeToCodecType(mime_type);
 229     std::vector<media::MediaCodecBridge::CodecsInfo> codecs_info =
 230         MediaCodecBridge::GetCodecsInfo();
 231     for (size_t i = 0; i < codecs_info.size(); ++i) {
 232       if (codecs_info[i].codecs == codec_type &&
 233           codecs_info[i].direction == direction) {
 234         codec_name = codecs_info[i].name;
 235         break;
 236       }
 237     }
 238   }
 239   DVLOG(1) << __PRETTY_FUNCTION__ << "Default codec for " << mime_type <<
 240       " : " << codec_name;
 241   // It would be nice if MediaCodecInfo externalized some notion of
 242   // HW-acceleration but it doesn't. Android Media guidance is that the
 243   // "OMX.google" prefix is always used for SW decoders, so that's what we
 244   // use. "OMX.SEC.*" codec is Samsung software implementation - report it
 245   // as unaccelerated as well. Also temporary blacklist Exynos and MediaTek
 246   // devices while HW decoder video freezes and distortions are
 247   // investigated - http://crbug.com/446974.
 248   if (codec_name.length() > 0) {
 249     return (StartsWithASCII(codec_name, "OMX.google.", true) ||
 250         StartsWithASCII(codec_name, "OMX.SEC.", true) ||
 251         StartsWithASCII(codec_name, "OMX.MTK.", true) ||
 252         StartsWithASCII(codec_name, "OMX.Exynos.", true));
 253   }
 254   return true;
 255 }
 256
 257 MediaCodecBridge::MediaCodecBridge(const std::string& mime,
 258                                    bool is_secure,
 259                                    MediaCodecDirection direction) {
 260   JNIEnv* env = AttachCurrentThread();
 261   CHECK(env);
 262   DCHECK(!mime.empty());
 263   ScopedJavaLocalRef<jstring> j_mime = ConvertUTF8ToJavaString(env, mime);
 264   j_media_codec_.Reset(
 265       Java_MediaCodecBridge_create(env, j_mime.obj(), is_secure, direction));
 266 }
 267
 268 MediaCodecBridge::~MediaCodecBridge() {
 269   JNIEnv* env = AttachCurrentThread();
 270   CHECK(env);
 271   if (j_media_codec_.obj())
 272     Java_MediaCodecBridge_release(env, j_media_codec_.obj());
 273 }
 274
 275 bool MediaCodecBridge::StartInternal() {
 276   JNIEnv* env = AttachCurrentThread();
 277   return Java_MediaCodecBridge_start(env, j_media_codec_.obj());
 278 }
 279
 280 MediaCodecStatus MediaCodecBridge::Reset() {
 281   JNIEnv* env = AttachCurrentThread();
 282   return static_cast<MediaCodecStatus>(
 283       Java_MediaCodecBridge_flush(env, j_media_codec_.obj()));
 284 }
 285
 286 void MediaCodecBridge::Stop() {
 287   JNIEnv* env = AttachCurrentThread();
 288   Java_MediaCodecBridge_stop(env, j_media_codec_.obj());
 289 }
 290
 291 void MediaCodecBridge::GetOutputFormat(int* width, int* height) {
 292   JNIEnv* env = AttachCurrentThread();
 293
 294   *width = Java_MediaCodecBridge_getOutputWidth(env, j_media_codec_.obj());
 295   *height = Java_MediaCodecBridge_getOutputHeight(env, j_media_codec_.obj());
 296 }
 297
 298 int MediaCodecBridge::GetOutputSamplingRate() {
 299   JNIEnv* env = AttachCurrentThread();
 300
 301   return Java_MediaCodecBridge_getOutputSamplingRate(env, j_media_codec_.obj());
 302 }
 303
 304 MediaCodecStatus MediaCodecBridge::QueueInputBuffer(
 305     int index,
 306     const uint8* data,
 307     size_t data_size,
 308     const base::TimeDelta& presentation_time) {
 309   DVLOG(3) << __PRETTY_FUNCTION__ << index << ": " << data_size;
 310   if (data_size > base::checked_cast<size_t>(kint32max))
 311     return MEDIA_CODEC_ERROR;
 312   if (data && !FillInputBuffer(index, data, data_size))
 313     return MEDIA_CODEC_ERROR;
 314   JNIEnv* env = AttachCurrentThread();
 315   return static_cast<MediaCodecStatus>(
 316       Java_MediaCodecBridge_queueInputBuffer(env,
 317                                              j_media_codec_.obj(),
 318                                              index,
 319                                              0,
 320                                              data_size,
 321                                              presentation_time.InMicroseconds(),
 322                                              0));
 323 }
 324
 325 MediaCodecStatus MediaCodecBridge::QueueSecureInputBuffer(
 326     int index,
 327     const uint8* data,
 328     size_t data_size,
 329     const uint8* key_id,
 330     int key_id_size,
 331     const uint8* iv,
 332     int iv_size,
 333     const SubsampleEntry* subsamples,
 334     int subsamples_size,
 335     const base::TimeDelta& presentation_time) {
 336   DVLOG(3) << __PRETTY_FUNCTION__ << index << ": " << data_size;
 337   if (data_size > base::checked_cast<size_t>(kint32max))
 338     return MEDIA_CODEC_ERROR;
 339   if (data && !FillInputBuffer(index, data, data_size))
 340     return MEDIA_CODEC_ERROR;
 341
 342   JNIEnv* env = AttachCurrentThread();
 343   ScopedJavaLocalRef<jbyteArray> j_key_id =
 344       base::android::ToJavaByteArray(env, key_id, key_id_size);
 345   ScopedJavaLocalRef<jbyteArray> j_iv =
 346       base::android::ToJavaByteArray(env, iv, iv_size);
 347
 348   // MediaCodec.CryptoInfo documentations says passing NULL for |clear_array|
 349   // to indicate that all data is encrypted. But it doesn't specify what
 350   // |cypher_array| and |subsamples_size| should be in that case. Passing
 351   // one subsample here just to be on the safe side.
 352   int new_subsamples_size = subsamples_size == 0 ? 1 : subsamples_size;
 353
 354   scoped_ptr<jint[]> native_clear_array(new jint[new_subsamples_size]);
 355   scoped_ptr<jint[]> native_cypher_array(new jint[new_subsamples_size]);
 356
 357   if (subsamples_size == 0) {
 358     DCHECK(!subsamples);
 359     native_clear_array[0] = 0;
 360     native_cypher_array[0] = data_size;
 361   } else {
 362     DCHECK_GT(subsamples_size, 0);
 363     DCHECK(subsamples);
 364     for (int i = 0; i < subsamples_size; ++i) {
 365       DCHECK(subsamples[i].clear_bytes <= std::numeric_limits<uint16>::max());
 366       if (subsamples[i].cypher_bytes >
 367           static_cast<uint32>(std::numeric_limits<jint>::max())) {
 368         return MEDIA_CODEC_ERROR;
 369       }
 370
 371       native_clear_array[i] = subsamples[i].clear_bytes;
 372       native_cypher_array[i] = subsamples[i].cypher_bytes;
 373     }
 374   }
 375
 376   ScopedJavaLocalRef<jintArray> clear_array =
 377       ToJavaIntArray(env, native_clear_array.Pass(), new_subsamples_size);
 378   ScopedJavaLocalRef<jintArray> cypher_array =
 379       ToJavaIntArray(env, native_cypher_array.Pass(), new_subsamples_size);
 380
 381   return static_cast<MediaCodecStatus>(
 382       Java_MediaCodecBridge_queueSecureInputBuffer(
 383           env,
 384           j_media_codec_.obj(),
 385           index,
 386           0,
 387           j_iv.obj(),
 388           j_key_id.obj(),
 389           clear_array.obj(),
 390           cypher_array.obj(),
 391           new_subsamples_size,
 392           presentation_time.InMicroseconds()));
 393 }
 394
 395 void MediaCodecBridge::QueueEOS(int input_buffer_index) {
 396   DVLOG(3) << __PRETTY_FUNCTION__ << ": " << input_buffer_index;
 397   JNIEnv* env = AttachCurrentThread();
 398   Java_MediaCodecBridge_queueInputBuffer(env,
 399                                          j_media_codec_.obj(),
 400                                          input_buffer_index,
 401                                          0,
 402                                          0,
 403                                          0,
 404                                          kBufferFlagEndOfStream);
 405 }
 406
 407 MediaCodecStatus MediaCodecBridge::DequeueInputBuffer(
 408     const base::TimeDelta& timeout,
 409     int* index) {
 410   JNIEnv* env = AttachCurrentThread();
 411   ScopedJavaLocalRef<jobject> result = Java_MediaCodecBridge_dequeueInputBuffer(
 412       env, j_media_codec_.obj(), timeout.InMicroseconds());
 413   *index = Java_DequeueInputResult_index(env, result.obj());
 414   MediaCodecStatus status = static_cast<MediaCodecStatus>(
 415       Java_DequeueInputResult_status(env, result.obj()));
 416   DVLOG(3) << __PRETTY_FUNCTION__ << ": status: " << status
 417            << ", index: " << *index;
 418   return status;
 419 }
 420
 421 MediaCodecStatus MediaCodecBridge::DequeueOutputBuffer(
 422     const base::TimeDelta& timeout,
 423     int* index,
 424     size_t* offset,
 425     size_t* size,
 426     base::TimeDelta* presentation_time,
 427     bool* end_of_stream,
 428     bool* key_frame) {
 429   JNIEnv* env = AttachCurrentThread();
 430   ScopedJavaLocalRef<jobject> result =
 431       Java_MediaCodecBridge_dequeueOutputBuffer(
 432           env, j_media_codec_.obj(), timeout.InMicroseconds());
 433   *index = Java_DequeueOutputResult_index(env, result.obj());
 434   *offset = base::checked_cast<size_t>(
 435       Java_DequeueOutputResult_offset(env, result.obj()));
 436   *size = base::checked_cast<size_t>(
 437       Java_DequeueOutputResult_numBytes(env, result.obj()));
 438   if (presentation_time) {
 439     *presentation_time = base::TimeDelta::FromMicroseconds(
 440         Java_DequeueOutputResult_presentationTimeMicroseconds(env,
 441                                                               result.obj()));
 442   }
 443   int flags = Java_DequeueOutputResult_flags(env, result.obj());
 444   if (end_of_stream)
 445     *end_of_stream = flags & kBufferFlagEndOfStream;
 446   if (key_frame)
 447     *key_frame = flags & kBufferFlagSyncFrame;
 448   MediaCodecStatus status = static_cast<MediaCodecStatus>(
 449       Java_DequeueOutputResult_status(env, result.obj()));
 450   DVLOG(3) << __PRETTY_FUNCTION__ << ": status: " << status
 451            << ", index: " << *index << ", offset: " << *offset
 452            << ", size: " << *size << ", flags: " << flags;
 453   return status;
 454 }
 455
 456 void MediaCodecBridge::ReleaseOutputBuffer(int index, bool render) {
 457   DVLOG(3) << __PRETTY_FUNCTION__ << ": " << index;
 458   JNIEnv* env = AttachCurrentThread();
 459   CHECK(env);
 460
 461   Java_MediaCodecBridge_releaseOutputBuffer(
 462       env, j_media_codec_.obj(), index, render);
 463 }
 464
 465 int MediaCodecBridge::GetOutputBuffersCount() {
 466   JNIEnv* env = AttachCurrentThread();
 467   return Java_MediaCodecBridge_getOutputBuffersCount(env, j_media_codec_.obj());
 468 }
 469
 470 size_t MediaCodecBridge::GetOutputBuffersCapacity() {
 471   JNIEnv* env = AttachCurrentThread();
 472   return Java_MediaCodecBridge_getOutputBuffersCapacity(env,
 473                                                         j_media_codec_.obj());
 474 }
 475
 476 void MediaCodecBridge::GetInputBuffer(int input_buffer_index,
 477                                       uint8** data,
 478                                       size_t* capacity) {
 479   JNIEnv* env = AttachCurrentThread();
 480   ScopedJavaLocalRef<jobject> j_buffer(Java_MediaCodecBridge_getInputBuffer(
 481       env, j_media_codec_.obj(), input_buffer_index));
 482   *data = static_cast<uint8*>(env->GetDirectBufferAddress(j_buffer.obj()));
 483   *capacity = base::checked_cast<size_t>(
 484       env->GetDirectBufferCapacity(j_buffer.obj()));
 485 }
 486
 487 bool MediaCodecBridge::CopyFromOutputBuffer(int index,
 488                                             size_t offset,
 489                                             void* dst,
 490                                             int dst_size) {
 491   JNIEnv* env = AttachCurrentThread();
 492   ScopedJavaLocalRef<jobject> j_buffer(
 493       Java_MediaCodecBridge_getOutputBuffer(env, j_media_codec_.obj(), index));
 494   void* src_data =
 495       reinterpret_cast<uint8*>(env->GetDirectBufferAddress(j_buffer.obj())) +
 496       offset;
 497   int src_capacity = env->GetDirectBufferCapacity(j_buffer.obj()) - offset;
 498   if (src_capacity < dst_size)
 499     return false;
 500   memcpy(dst, src_data, dst_size);
 501   return true;
 502 }
 503
 504 bool MediaCodecBridge::FillInputBuffer(int index,
 505                                        const uint8* data,
 506                                        size_t size) {
 507   uint8* dst = NULL;
 508   size_t capacity = 0;
 509   GetInputBuffer(index, &dst, &capacity);
 510   CHECK(dst);
 511
 512   if (size > capacity) {
 513     LOG(ERROR) << "Input buffer size " << size
 514                << " exceeds MediaCodec input buffer capacity: " << capacity;
 515     return false;
 516   }
 517
 518   memcpy(dst, data, size);
 519   return true;
 520 }
 521
 522 AudioCodecBridge::AudioCodecBridge(const std::string& mime)
 523     // Audio codec doesn't care about security level and there is no need for
 524     // audio encoding yet.
 525     : MediaCodecBridge(mime, false, MEDIA_CODEC_DECODER) {}
 526
 527 bool AudioCodecBridge::Start(const AudioCodec& codec,
 528                              int sample_rate,
 529                              int channel_count,
 530                              const uint8* extra_data,
 531                              size_t extra_data_size,
 532                              int64 codec_delay_ns,
 533                              int64 seek_preroll_ns,
 534                              bool play_audio,
 535                              jobject media_crypto) {
 536   JNIEnv* env = AttachCurrentThread();
 537
 538   if (!media_codec())
 539     return false;
 540
 541   std::string codec_string = AudioCodecToAndroidMimeType(codec);
 542   if (codec_string.empty())
 543     return false;
 544
 545   ScopedJavaLocalRef<jstring> j_mime =
 546       ConvertUTF8ToJavaString(env, codec_string);
 547   ScopedJavaLocalRef<jobject> j_format(Java_MediaCodecBridge_createAudioFormat(
 548       env, j_mime.obj(), sample_rate, channel_count));
 549   DCHECK(!j_format.is_null());
 550
 551   if (!ConfigureMediaFormat(j_format.obj(), codec, extra_data, extra_data_size,
 552                             codec_delay_ns, seek_preroll_ns)) {
 553     return false;
 554   }
 555
 556   if (!Java_MediaCodecBridge_configureAudio(
 557            env, media_codec(), j_format.obj(), media_crypto, 0, play_audio)) {
 558     return false;
 559   }
 560
 561   return StartInternal();
 562 }
 563
 564 bool AudioCodecBridge::ConfigureMediaFormat(jobject j_format,
 565                                             const AudioCodec& codec,
 566                                             const uint8* extra_data,
 567                                             size_t extra_data_size,
 568                                             int64 codec_delay_ns,
 569                                             int64 seek_preroll_ns) {
 570   if (extra_data_size == 0 && codec != kCodecOpus)
 571     return true;
 572
 573   JNIEnv* env = AttachCurrentThread();
 574   switch (codec) {
 575     case kCodecVorbis: {
 576       if (extra_data[0] != 2) {
 577         LOG(ERROR) << "Invalid number of vorbis headers before the codec "
 578                    << "header: " << extra_data[0];
 579         return false;
 580       }
 581
 582       size_t header_length[2];
 583       // |total_length| keeps track of the total number of bytes before the last
 584       // header.
 585       size_t total_length = 1;
 586       const uint8* current_pos = extra_data;
 587       // Calculate the length of the first 2 headers.
 588       for (int i = 0; i < 2; ++i) {
 589         header_length[i] = 0;
 590         while (total_length < extra_data_size) {
 591           size_t size = *(++current_pos);
 592           total_length += 1 + size;
 593           if (total_length > 0x80000000) {
 594             LOG(ERROR) << "Vorbis header size too large";
 595             return false;
 596           }
 597           header_length[i] += size;
 598           if (size < 0xFF)
 599             break;
 600         }
 601         if (total_length >= extra_data_size) {
 602           LOG(ERROR) << "Invalid vorbis header size in the extra data";
 603           return false;
 604         }
 605       }
 606       current_pos++;
 607       // The first header is identification header.
 608       ScopedJavaLocalRef<jbyteArray> first_header =
 609           base::android::ToJavaByteArray(env, current_pos, header_length[0]);
 610       Java_MediaCodecBridge_setCodecSpecificData(
 611           env, j_format, 0, first_header.obj());
 612       // The last header is codec header.
 613       ScopedJavaLocalRef<jbyteArray> last_header =
 614           base::android::ToJavaByteArray(
 615               env, extra_data + total_length, extra_data_size - total_length);
 616       Java_MediaCodecBridge_setCodecSpecificData(
 617           env, j_format, 1, last_header.obj());
 618       break;
 619     }
 620     case kCodecAAC: {
 621       media::BitReader reader(extra_data, extra_data_size);
 622
 623       // The following code is copied from aac.cc
 624       // TODO(qinmin): refactor the code in aac.cc to make it more reusable.
 625       uint8 profile = 0;
 626       uint8 frequency_index = 0;
 627       uint8 channel_config = 0;
 628       if (!reader.ReadBits(5, &profile) ||
 629           !reader.ReadBits(4, &frequency_index)) {
 630         LOG(ERROR) << "Unable to parse AAC header";
 631         return false;
 632       }
 633       if (0xf == frequency_index && !reader.SkipBits(24)) {
 634         LOG(ERROR) << "Unable to parse AAC header";
 635         return false;
 636       }
 637       if (!reader.ReadBits(4, &channel_config)) {
 638         LOG(ERROR) << "Unable to parse AAC header";
 639         return false;
 640       }
 641
 642       if (profile < 1 || profile > 4 || frequency_index == 0xf ||
 643           channel_config > 7) {
 644         LOG(ERROR) << "Invalid AAC header";
 645         return false;
 646       }
 647       const size_t kCsdLength = 2;
 648       uint8 csd[kCsdLength];
 649       csd[0] = profile << 3 | frequency_index >> 1;
 650       csd[1] = (frequency_index & 0x01) << 7 | channel_config << 3;
 651       ScopedJavaLocalRef<jbyteArray> byte_array =
 652           base::android::ToJavaByteArray(env, csd, kCsdLength);
 653       Java_MediaCodecBridge_setCodecSpecificData(
 654           env, j_format, 0, byte_array.obj());
 655
 656       // TODO(qinmin): pass an extra variable to this function to determine
 657       // whether we need to call this.
 658       Java_MediaCodecBridge_setFrameHasADTSHeader(env, j_format);
 659       break;
 660     }
 661     case kCodecOpus: {
 662       if (!extra_data || extra_data_size == 0 ||
 663           codec_delay_ns < 0 || seek_preroll_ns < 0) {
 664         LOG(ERROR) << "Invalid Opus Header";
 665         return false;
 666       }
 667
 668       // csd0 - Opus Header
 669       ScopedJavaLocalRef<jbyteArray> csd0 =
 670           base::android::ToJavaByteArray(env, extra_data, extra_data_size);
 671       Java_MediaCodecBridge_setCodecSpecificData(env, j_format, 0, csd0.obj());
 672
 673       // csd1 - Codec Delay
 674       ScopedJavaLocalRef<jbyteArray> csd1 =
 675           base::android::ToJavaByteArray(
 676               env, reinterpret_cast<const uint8*>(&codec_delay_ns),
 677               sizeof(int64_t));
 678       Java_MediaCodecBridge_setCodecSpecificData(env, j_format, 1, csd1.obj());
 679
 680       // csd2 - Seek Preroll
 681       ScopedJavaLocalRef<jbyteArray> csd2 =
 682           base::android::ToJavaByteArray(
 683               env, reinterpret_cast<const uint8*>(&seek_preroll_ns),
 684               sizeof(int64_t));
 685       Java_MediaCodecBridge_setCodecSpecificData(env, j_format, 2, csd2.obj());
 686       break;
 687     }
 688     default:
 689       LOG(ERROR) << "Invalid header encountered for codec: "
 690                  << AudioCodecToAndroidMimeType(codec);
 691       return false;
 692   }
 693   return true;
 694 }
 695
 696 int64 AudioCodecBridge::PlayOutputBuffer(int index, size_t size) {
 697   DCHECK_LE(0, index);
 698   int numBytes = base::checked_cast<int>(size);
 699   JNIEnv* env = AttachCurrentThread();
 700   ScopedJavaLocalRef<jobject> buf =
 701       Java_MediaCodecBridge_getOutputBuffer(env, media_codec(), index);
 702   uint8* buffer = static_cast<uint8*>(env->GetDirectBufferAddress(buf.obj()));
 703
 704   ScopedJavaLocalRef<jbyteArray> byte_array =
 705       base::android::ToJavaByteArray(env, buffer, numBytes);
 706   return Java_MediaCodecBridge_playOutputBuffer(
 707       env, media_codec(), byte_array.obj());
 708 }
 709
 710 void AudioCodecBridge::SetVolume(double volume) {
 711   JNIEnv* env = AttachCurrentThread();
 712   Java_MediaCodecBridge_setVolume(env, media_codec(), volume);
 713 }
 714
 715 // static
 716 AudioCodecBridge* AudioCodecBridge::Create(const AudioCodec& codec) {
 717   if (!MediaCodecBridge::IsAvailable())
 718     return NULL;
 719
 720   const std::string mime = AudioCodecToAndroidMimeType(codec);
 721   return mime.empty() ? NULL : new AudioCodecBridge(mime);
 722 }
 723
 724 // static
 725 bool AudioCodecBridge::IsKnownUnaccelerated(const AudioCodec& codec) {
 726   return MediaCodecBridge::IsKnownUnaccelerated(
 727       AudioCodecToAndroidMimeType(codec), MEDIA_CODEC_DECODER);
 728 }
 729
 730 // static
 731 bool VideoCodecBridge::IsKnownUnaccelerated(const VideoCodec& codec,
 732                                             MediaCodecDirection direction) {
 733   return MediaCodecBridge::IsKnownUnaccelerated(
 734       VideoCodecToAndroidMimeType(codec), direction);
 735 }
 736
 737 // static
 738 VideoCodecBridge* VideoCodecBridge::CreateDecoder(const VideoCodec& codec,
 739                                                   bool is_secure,
 740                                                   const gfx::Size& size,
 741                                                   jobject surface,
 742                                                   jobject media_crypto) {
 743   if (!MediaCodecBridge::IsAvailable())
 744     return NULL;
 745
 746   const std::string mime = VideoCodecToAndroidMimeType(codec);
 747   if (mime.empty())
 748     return NULL;
 749
 750   scoped_ptr<VideoCodecBridge> bridge(
 751       new VideoCodecBridge(mime, is_secure, MEDIA_CODEC_DECODER));
 752   if (!bridge->media_codec())
 753     return NULL;
 754
 755   JNIEnv* env = AttachCurrentThread();
 756   ScopedJavaLocalRef<jstring> j_mime = ConvertUTF8ToJavaString(env, mime);
 757   ScopedJavaLocalRef<jobject> j_format(
 758       Java_MediaCodecBridge_createVideoDecoderFormat(
 759           env, j_mime.obj(), size.width(), size.height()));
 760   DCHECK(!j_format.is_null());
 761   if (!Java_MediaCodecBridge_configureVideo(env,
 762                                             bridge->media_codec(),
 763                                             j_format.obj(),
 764                                             surface,
 765                                             media_crypto,
 766                                             0)) {
 767     return NULL;
 768   }
 769
 770   return bridge->StartInternal() ? bridge.release() : NULL;
 771 }
 772
 773 // static
 774 VideoCodecBridge* VideoCodecBridge::CreateEncoder(const VideoCodec& codec,
 775                                                   const gfx::Size& size,
 776                                                   int bit_rate,
 777                                                   int frame_rate,
 778                                                   int i_frame_interval,
 779                                                   int color_format) {
 780   if (!MediaCodecBridge::IsAvailable())
 781     return NULL;
 782
 783   const std::string mime = VideoCodecToAndroidMimeType(codec);
 784   if (mime.empty())
 785     return NULL;
 786
 787   scoped_ptr<VideoCodecBridge> bridge(
 788       new VideoCodecBridge(mime, false, MEDIA_CODEC_ENCODER));
 789   if (!bridge->media_codec())
 790     return NULL;
 791
 792   JNIEnv* env = AttachCurrentThread();
 793   ScopedJavaLocalRef<jstring> j_mime = ConvertUTF8ToJavaString(env, mime);
 794   ScopedJavaLocalRef<jobject> j_format(
 795       Java_MediaCodecBridge_createVideoEncoderFormat(env,
 796                                                      j_mime.obj(),
 797                                                      size.width(),
 798                                                      size.height(),
 799                                                      bit_rate,
 800                                                      frame_rate,
 801                                                      i_frame_interval,
 802                                                      color_format));
 803   DCHECK(!j_format.is_null());
 804   if (!Java_MediaCodecBridge_configureVideo(env,
 805                                             bridge->media_codec(),
 806                                             j_format.obj(),
 807                                             NULL,
 808                                             NULL,
 809                                             kConfigureFlagEncode)) {
 810     return NULL;
 811   }
 812
 813   return bridge->StartInternal() ? bridge.release() : NULL;
 814 }
 815
 816 VideoCodecBridge::VideoCodecBridge(const std::string& mime,
 817                                    bool is_secure,
 818                                    MediaCodecDirection direction)
 819     : MediaCodecBridge(mime, is_secure, direction),
 820       adaptive_playback_supported_for_testing_(-1) {}
 821
 822 void VideoCodecBridge::SetVideoBitrate(int bps) {
 823   JNIEnv* env = AttachCurrentThread();
 824   Java_MediaCodecBridge_setVideoBitrate(env, media_codec(), bps);
 825 }
 826
 827 void VideoCodecBridge::RequestKeyFrameSoon() {
 828   JNIEnv* env = AttachCurrentThread();
 829   Java_MediaCodecBridge_requestKeyFrameSoon(env, media_codec());
 830 }
 831
 832 bool VideoCodecBridge::IsAdaptivePlaybackSupported(int width, int height) {
 833   if (adaptive_playback_supported_for_testing_ == 0)
 834     return false;
 835   else if (adaptive_playback_supported_for_testing_ > 0)
 836     return true;
 837   JNIEnv* env = AttachCurrentThread();
 838   return Java_MediaCodecBridge_isAdaptivePlaybackSupported(
 839       env, media_codec(), width, height);
 840 }
 841
 842 bool MediaCodecBridge::RegisterMediaCodecBridge(JNIEnv* env) {
 843   return RegisterNativesImpl(env);
 844 }
 845
 846 }  // namespace media