Refactor MediaCodecBridge to add support for NDK APIs

media/base/android/media_codec_bridge.cc

 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "media/base/android/media_codec_bridge.h"
 
 #include <algorithm>
 
 #include "base/android/build_info.h"
 #include "base/android/jni_android.h"
 #include "base/android/jni_array.h"
 #include "base/android/jni_string.h"
 #include "base/basictypes.h"
-#include "base/lazy_instance.h"
 #include "base/logging.h"
-#include "base/numerics/safe_conversions.h"
 #include "base/strings/string_util.h"
-#include "base/strings/stringprintf.h"
-#include "jni/MediaCodecBridge_jni.h"
-#include "media/base/bit_reader.h"
 #include "media/base/decrypt_config.h"
 
 using base::android::AttachCurrentThread;
 using base::android::ConvertJavaStringToUTF8;
 using base::android::ConvertUTF8ToJavaString;
 using base::android::JavaIntArrayToIntVector;
 using base::android::ScopedJavaLocalRef;
 
-#define RETURN_ON_ERROR(condition)                          \
-  do {                                                           \
-    if (!(condition)) {                                          \
-      LOG(ERROR) << "Unable to parse AAC header: " #condition; \
-      return false;                                              \
-    }                                                            \
-  } while (0)
-
 namespace media {
 
-enum {
-  kBufferFlagSyncFrame = 1,    // BUFFER_FLAG_SYNC_FRAME
-  kBufferFlagEndOfStream = 4,  // BUFFER_FLAG_END_OF_STREAM
-  kConfigureFlagEncode = 1,    // CONFIGURE_FLAG_ENCODE
-};
-
-static const std::string AudioCodecToAndroidMimeType(const AudioCodec& codec) {
-  switch (codec) {
-    case kCodecMP3:
-      return "audio/mpeg";
-    case kCodecVorbis:
-      return "audio/vorbis";
-    case kCodecOpus:
-      return "audio/opus";
-    case kCodecAAC:
-      return "audio/mp4a-latm";
-    default:
-      return std::string();
-  }
-}
-
-static const std::string VideoCodecToAndroidMimeType(const VideoCodec& codec) {
-  switch (codec) {
-    case kCodecH264:
-      return "video/avc";
-    case kCodecHEVC:
-      return "video/hevc";
-    case kCodecVP8:
-      return "video/x-vnd.on2.vp8";
-    case kCodecVP9:
-      return "video/x-vnd.on2.vp9";
-    default:
-      return std::string();
-  }
-}
-
-static const std::string CodecTypeToAndroidMimeType(const std::string& codec) {
-  // TODO(xhwang): Shall we handle more detailed strings like "mp4a.40.2"?
-  if (codec == "avc1")
-    return "video/avc";
-  if (codec == "hvc1")
-    return "video/hevc";
-  if (codec == "mp4a")
-    return "audio/mp4a-latm";
-  if (codec == "vp8" || codec == "vp8.0")
-    return "video/x-vnd.on2.vp8";
-  if (codec == "vp9" || codec == "vp9.0")
-    return "video/x-vnd.on2.vp9";
-  if (codec == "vorbis")
-    return "audio/vorbis";
-  if (codec == "opus")
-    return "audio/opus";
-  return std::string();
-}
-
-// TODO(qinmin): using a map to help all the conversions in this class.
-static const std::string AndroidMimeTypeToCodecType(const std::string& mime) {
-  if (mime == "video/mp4v-es")
-    return "mp4v";
-  if (mime == "video/avc")
-    return "avc1";
-  if (mime == "video/hevc")
-    return "hvc1";
-  if (mime == "video/x-vnd.on2.vp8")
-    return "vp8";
-  if (mime == "video/x-vnd.on2.vp9")
-    return "vp9";
-  if (mime == "audio/mp4a-latm")
-    return "mp4a";
-  if (mime == "audio/mpeg")
-    return "mp3";
-  if (mime == "audio/vorbis")
-    return "vorbis";
-  if (mime == "audio/opus")
-    return "opus";
-  return std::string();
-}
-
-static ScopedJavaLocalRef<jintArray>
-ToJavaIntArray(JNIEnv* env, scoped_ptr<jint[]> native_array, int size) {
-  ScopedJavaLocalRef<jintArray> j_array(env, env->NewIntArray(size));
-  env->SetIntArrayRegion(j_array.obj(), 0, size, native_array.get());
-  return j_array;
-}
-
-// static
-bool MediaCodecBridge::IsAvailable() {
-  // MediaCodec is only available on JB and greater.
-  if (base::android::BuildInfo::GetInstance()->sdk_int() < 16)
-    return false;
-  // Blacklist some devices on Jellybean as for MediaCodec support is buggy.
-  // http://crbug.com/365494.
-  if (base::android::BuildInfo::GetInstance()->sdk_int() == 16) {
-    std::string model(base::android::BuildInfo::GetInstance()->model());
-    return model != "GT-I9100" && model != "GT-I9300" && model != "GT-N7000";
-  }
-  return true;
-}
-
-// static
-bool MediaCodecBridge::SupportsSetParameters() {
-  // MediaCodec.setParameters() is only available starting with K.
-  return base::android::BuildInfo::GetInstance()->sdk_int() >= 19;
-}
-
-// static
-bool MediaCodecBridge::SupportsGetName() {
-  // MediaCodec.getName() is only available on JB MR2 and greater.
-  return base::android::BuildInfo::GetInstance()->sdk_int() >= 18;
-}
-
-// static
-std::vector<MediaCodecBridge::CodecsInfo> MediaCodecBridge::GetCodecsInfo() {
-  std::vector<CodecsInfo> codecs_info;
-  if (!IsAvailable())
-    return codecs_info;
-
-  JNIEnv* env = AttachCurrentThread();
-  std::string mime_type;
-  ScopedJavaLocalRef<jobjectArray> j_codec_info_array =
-      Java_MediaCodecBridge_getCodecsInfo(env);
-  jsize len = env->GetArrayLength(j_codec_info_array.obj());
-  for (jsize i = 0; i < len; ++i) {
-    ScopedJavaLocalRef<jobject> j_info(
-        env, env->GetObjectArrayElement(j_codec_info_array.obj(), i));
-    ScopedJavaLocalRef<jstring> j_codec_type =
-        Java_CodecInfo_codecType(env, j_info.obj());
-    ConvertJavaStringToUTF8(env, j_codec_type.obj(), &mime_type);
-    ScopedJavaLocalRef<jstring> j_codec_name =
-        Java_CodecInfo_codecName(env, j_info.obj());
-    CodecsInfo info;
-    info.codecs = AndroidMimeTypeToCodecType(mime_type);
-    ConvertJavaStringToUTF8(env, j_codec_name.obj(), &info.name);
-    info.direction = static_cast<MediaCodecDirection>(
-        Java_CodecInfo_direction(env, j_info.obj()));
-    codecs_info.push_back(info);
-  }
-  return codecs_info;
-}
-
-// static
-std::string MediaCodecBridge::GetDefaultCodecName(
-    const std::string& mime_type,
-    MediaCodecDirection direction) {
-  if (!IsAvailable())
-    return std::string();
-
-  JNIEnv* env = AttachCurrentThread();
-  ScopedJavaLocalRef<jstring> j_mime = ConvertUTF8ToJavaString(env, mime_type);
-  ScopedJavaLocalRef<jstring> j_codec_name =
-      Java_MediaCodecBridge_getDefaultCodecName(env, j_mime.obj(), direction);
-  return ConvertJavaStringToUTF8(env, j_codec_name.obj());
-}
-
-// static
-std::set<int> MediaCodecBridge::GetEncoderColorFormats(
-    const std::string& mime_type) {
-  std::set<int> color_formats;
-  if (!IsAvailable())
-    return color_formats;
-
-  JNIEnv* env = AttachCurrentThread();
-  ScopedJavaLocalRef<jstring> j_mime = ConvertUTF8ToJavaString(env, mime_type);
-  ScopedJavaLocalRef<jintArray> j_color_format_array =
-      Java_MediaCodecBridge_getEncoderColorFormatsForMime(env, j_mime.obj());
-
-  if (j_color_format_array.obj()) {
-    std::vector<int> formats;
-    JavaIntArrayToIntVector(env, j_color_format_array.obj(), &formats);
-    color_formats = std::set<int>(formats.begin(), formats.end());
-  }
-
-  return color_formats;
-}
-
-// static
-bool MediaCodecBridge::CanDecode(const std::string& codec, bool is_secure) {
-  if (!IsAvailable())
-    return false;
-
-  JNIEnv* env = AttachCurrentThread();
-  std::string mime = CodecTypeToAndroidMimeType(codec);
-  if (mime.empty())
-    return false;
-  ScopedJavaLocalRef<jstring> j_mime = ConvertUTF8ToJavaString(env, mime);
-  ScopedJavaLocalRef<jobject> j_media_codec_bridge =
-      Java_MediaCodecBridge_create(env, j_mime.obj(), is_secure, false);
-  if (!j_media_codec_bridge.is_null()) {
-    Java_MediaCodecBridge_release(env, j_media_codec_bridge.obj());
-    return true;
-  }
-  return false;
-}
-
 // static
 bool MediaCodecBridge::IsKnownUnaccelerated(const std::string& mime_type,

[xhwang, 2015/11/30 23:11:50]

Now this file is small enough that I feel it make sense to make the interface
pure virtual and move (almost) everything to other places:

- IsKnownUnaccelerated() can be moved to MediaCodecUtil?

- QueueSecureInputBuffer() is exists only to translate a slightly different
interface. We should consolidate the interfaces and avoid this translation.

- I suppose we'll want to override GetOutputBuffersCount() etc in the NDK
version as well? Let's override it and put NOTIMPLEMENTED for now?

- Now we have only FillInputBuffer() left. I feel fine to duplicate it. It'd be
nice to look at either the SDK or the NDK implementation without looking back to
MediaCodecBridge (knowing that it's pure virtual).

[qinmin, 2015/12/03 22:46:23]

Moved IsKnownUnaccelerated() to MediaCodecUtil.

GetOutputBuffersCount() is deprecated and will not be supported in NDK. We
should remove using GetOutputBuffersCount() in our code.

I will leave QueueSecureInputBuffer() as it is. Current it is used by AVDA and
MediaCodecPlayer. Since we are in the transition from WMPA->WMPI, i will wait
until that's finished to make a decision on which interface we want to keep.

                                             MediaCodecDirection direction) {
-  if (!IsAvailable())
+  if (!IsMediaCodecAvailable())
     return true;
 
   std::string codec_name;
   if (SupportsGetName()) {
     codec_name = GetDefaultCodecName(mime_type, direction);
   } else {
     std::string codec_type = AndroidMimeTypeToCodecType(mime_type);
-    std::vector<media::MediaCodecBridge::CodecsInfo> codecs_info =
-        MediaCodecBridge::GetCodecsInfo();
+    std::vector<CodecsInfo> codecs_info = GetCodecsInfo();
     for (size_t i = 0; i < codecs_info.size(); ++i) {
       if (codecs_info[i].codecs == codec_type &&
           codecs_info[i].direction == direction) {
         codec_name = codecs_info[i].name;
         break;
       }
     }
   }
   DVLOG(1) << __PRETTY_FUNCTION__ << "Default codec for " << mime_type <<
       " : " << codec_name;
@@ skipping 10 matching lines @@
             base::StartsWith(codec_name, "OMX.SEC.",
                              base::CompareCase::SENSITIVE) ||
             base::StartsWith(codec_name, "OMX.MTK.",
                              base::CompareCase::SENSITIVE) ||
             base::StartsWith(codec_name, "OMX.Exynos.",
                              base::CompareCase::SENSITIVE));
   }
   return true;
 }
 
-MediaCodecBridge::MediaCodecBridge(const std::string& mime,
-                                   bool is_secure,
-                                   MediaCodecDirection direction) {
-  JNIEnv* env = AttachCurrentThread();
-  CHECK(env);
-  DCHECK(!mime.empty());
-  ScopedJavaLocalRef<jstring> j_mime = ConvertUTF8ToJavaString(env, mime);
-  j_media_codec_.Reset(
-      Java_MediaCodecBridge_create(env, j_mime.obj(), is_secure, direction));
-}
+MediaCodecBridge::MediaCodecBridge() {}
 
-MediaCodecBridge::~MediaCodecBridge() {
-  JNIEnv* env = AttachCurrentThread();
-  CHECK(env);
-  if (j_media_codec_.obj())
-    Java_MediaCodecBridge_release(env, j_media_codec_.obj());
-}
-
-bool MediaCodecBridge::StartInternal() {
-  JNIEnv* env = AttachCurrentThread();
-  return Java_MediaCodecBridge_start(env, j_media_codec_.obj());
-}
-
-MediaCodecStatus MediaCodecBridge::Reset() {
-  JNIEnv* env = AttachCurrentThread();
-  return static_cast<MediaCodecStatus>(
-      Java_MediaCodecBridge_flush(env, j_media_codec_.obj()));
-}
-
-void MediaCodecBridge::Stop() {
-  JNIEnv* env = AttachCurrentThread();
-  Java_MediaCodecBridge_stop(env, j_media_codec_.obj());
-}
-
-void MediaCodecBridge::GetOutputFormat(int* width, int* height) {
-  JNIEnv* env = AttachCurrentThread();
-
-  *width = Java_MediaCodecBridge_getOutputWidth(env, j_media_codec_.obj());
-  *height = Java_MediaCodecBridge_getOutputHeight(env, j_media_codec_.obj());
-}
-
-int MediaCodecBridge::GetOutputSamplingRate() {
-  JNIEnv* env = AttachCurrentThread();
-
-  return Java_MediaCodecBridge_getOutputSamplingRate(env, j_media_codec_.obj());
-}
-
-MediaCodecStatus MediaCodecBridge::QueueInputBuffer(
-    int index,
-    const uint8* data,
-    size_t data_size,
-    const base::TimeDelta& presentation_time) {
-  DVLOG(3) << __PRETTY_FUNCTION__ << index << ": " << data_size;
-  if (data_size > base::checked_cast<size_t>(kint32max))
-    return MEDIA_CODEC_ERROR;
-  if (data && !FillInputBuffer(index, data, data_size))
-    return MEDIA_CODEC_ERROR;
-  JNIEnv* env = AttachCurrentThread();
-  return static_cast<MediaCodecStatus>(
-      Java_MediaCodecBridge_queueInputBuffer(env,
-                                             j_media_codec_.obj(),
-                                             index,
-                                             0,
-                                             data_size,
-                                             presentation_time.InMicroseconds(),
-                                             0));
-}
+MediaCodecBridge::~MediaCodecBridge() {}
 
 MediaCodecStatus MediaCodecBridge::QueueSecureInputBuffer(
     int index,
     const uint8* data,
     size_t data_size,
     const std::string& key_id,
     const std::string& iv,
     const std::vector<SubsampleEntry>& subsamples,
     const base::TimeDelta& presentation_time) {
   return QueueSecureInputBuffer(
       index, data, data_size, reinterpret_cast<const uint8_t*>(key_id.data()),
       key_id.size(), reinterpret_cast<const uint8_t*>(iv.data()), iv.size(),
       subsamples.empty() ? nullptr : &subsamples[0], subsamples.size(),
       presentation_time);
 }
 
-// TODO(timav): Combine this and above methods together keeping only the first
-// interface after we switch to Spitzer pipeline.
-MediaCodecStatus MediaCodecBridge::QueueSecureInputBuffer(
-    int index,
-    const uint8* data,
-    size_t data_size,
-    const uint8* key_id,
-    int key_id_size,
-    const uint8* iv,
-    int iv_size,
-    const SubsampleEntry* subsamples,
-    int subsamples_size,
-    const base::TimeDelta& presentation_time) {
-  DVLOG(3) << __PRETTY_FUNCTION__ << index << ": " << data_size;
-  if (data_size > base::checked_cast<size_t>(kint32max))
-    return MEDIA_CODEC_ERROR;
-  if (data && !FillInputBuffer(index, data, data_size))
-    return MEDIA_CODEC_ERROR;
-
-  JNIEnv* env = AttachCurrentThread();
-  ScopedJavaLocalRef<jbyteArray> j_key_id =
-      base::android::ToJavaByteArray(env, key_id, key_id_size);
-  ScopedJavaLocalRef<jbyteArray> j_iv =
-      base::android::ToJavaByteArray(env, iv, iv_size);
-
-  // MediaCodec.CryptoInfo documentations says passing NULL for |clear_array|
-  // to indicate that all data is encrypted. But it doesn't specify what
-  // |cypher_array| and |subsamples_size| should be in that case. Passing
-  // one subsample here just to be on the safe side.
-  int new_subsamples_size = subsamples_size == 0 ? 1 : subsamples_size;
-
-  scoped_ptr<jint[]> native_clear_array(new jint[new_subsamples_size]);
-  scoped_ptr<jint[]> native_cypher_array(new jint[new_subsamples_size]);
-
-  if (subsamples_size == 0) {
-    DCHECK(!subsamples);
-    native_clear_array[0] = 0;
-    native_cypher_array[0] = data_size;
-  } else {
-    DCHECK_GT(subsamples_size, 0);
-    DCHECK(subsamples);
-    for (int i = 0; i < subsamples_size; ++i) {
-      DCHECK(subsamples[i].clear_bytes <= std::numeric_limits<uint16>::max());
-      if (subsamples[i].cypher_bytes >
-          static_cast<uint32>(std::numeric_limits<jint>::max())) {
-        return MEDIA_CODEC_ERROR;
-      }
-
-      native_clear_array[i] = subsamples[i].clear_bytes;
-      native_cypher_array[i] = subsamples[i].cypher_bytes;
-    }
-  }
-
-  ScopedJavaLocalRef<jintArray> clear_array =
-      ToJavaIntArray(env, native_clear_array.Pass(), new_subsamples_size);
-  ScopedJavaLocalRef<jintArray> cypher_array =
-      ToJavaIntArray(env, native_cypher_array.Pass(), new_subsamples_size);
-
-  return static_cast<MediaCodecStatus>(
-      Java_MediaCodecBridge_queueSecureInputBuffer(
-          env,
-          j_media_codec_.obj(),
-          index,
-          0,
-          j_iv.obj(),
-          j_key_id.obj(),
-          clear_array.obj(),
-          cypher_array.obj(),
-          new_subsamples_size,
-          presentation_time.InMicroseconds()));
-}
-
-void MediaCodecBridge::QueueEOS(int input_buffer_index) {
-  DVLOG(3) << __PRETTY_FUNCTION__ << ": " << input_buffer_index;
-  JNIEnv* env = AttachCurrentThread();
-  Java_MediaCodecBridge_queueInputBuffer(env,
-                                         j_media_codec_.obj(),
-                                         input_buffer_index,
-                                         0,
-                                         0,
-                                         0,
-                                         kBufferFlagEndOfStream);
-}
-
-MediaCodecStatus MediaCodecBridge::DequeueInputBuffer(
-    const base::TimeDelta& timeout,
-    int* index) {
-  JNIEnv* env = AttachCurrentThread();
-  ScopedJavaLocalRef<jobject> result = Java_MediaCodecBridge_dequeueInputBuffer(
-      env, j_media_codec_.obj(), timeout.InMicroseconds());
-  *index = Java_DequeueInputResult_index(env, result.obj());
-  MediaCodecStatus status = static_cast<MediaCodecStatus>(
-      Java_DequeueInputResult_status(env, result.obj()));
-  DVLOG(3) << __PRETTY_FUNCTION__ << ": status: " << status
-           << ", index: " << *index;
-  return status;
-}
-
-MediaCodecStatus MediaCodecBridge::DequeueOutputBuffer(
-    const base::TimeDelta& timeout,
-    int* index,
-    size_t* offset,
-    size_t* size,
-    base::TimeDelta* presentation_time,
-    bool* end_of_stream,
-    bool* key_frame) {
-  JNIEnv* env = AttachCurrentThread();
-  ScopedJavaLocalRef<jobject> result =
-      Java_MediaCodecBridge_dequeueOutputBuffer(
-          env, j_media_codec_.obj(), timeout.InMicroseconds());
-  *index = Java_DequeueOutputResult_index(env, result.obj());
-  *offset = base::checked_cast<size_t>(
-      Java_DequeueOutputResult_offset(env, result.obj()));
-  *size = base::checked_cast<size_t>(
-      Java_DequeueOutputResult_numBytes(env, result.obj()));
-  if (presentation_time) {
-    *presentation_time = base::TimeDelta::FromMicroseconds(
-        Java_DequeueOutputResult_presentationTimeMicroseconds(env,
-                                                              result.obj()));
-  }
-  int flags = Java_DequeueOutputResult_flags(env, result.obj());
-  if (end_of_stream)
-    *end_of_stream = flags & kBufferFlagEndOfStream;
-  if (key_frame)
-    *key_frame = flags & kBufferFlagSyncFrame;
-  MediaCodecStatus status = static_cast<MediaCodecStatus>(
-      Java_DequeueOutputResult_status(env, result.obj()));
-  DVLOG(3) << __PRETTY_FUNCTION__ << ": status: " << status
-           << ", index: " << *index << ", offset: " << *offset
-           << ", size: " << *size << ", flags: " << flags;
-  return status;
-}
-
-void MediaCodecBridge::ReleaseOutputBuffer(int index, bool render) {
-  DVLOG(3) << __PRETTY_FUNCTION__ << ": " << index;
-  JNIEnv* env = AttachCurrentThread();
-  CHECK(env);
-
-  Java_MediaCodecBridge_releaseOutputBuffer(
-      env, j_media_codec_.obj(), index, render);
-}
-
 int MediaCodecBridge::GetOutputBuffersCount() {
-  JNIEnv* env = AttachCurrentThread();
-  return Java_MediaCodecBridge_getOutputBuffersCount(env, j_media_codec_.obj());
+  return 0;
 }
 
 size_t MediaCodecBridge::GetOutputBuffersCapacity() {
-  JNIEnv* env = AttachCurrentThread();
-  return Java_MediaCodecBridge_getOutputBuffersCapacity(env,
-                                                        j_media_codec_.obj());
-}
-
-void MediaCodecBridge::GetInputBuffer(int input_buffer_index,
-                                      uint8** data,
-                                      size_t* capacity) {
-  JNIEnv* env = AttachCurrentThread();
-  ScopedJavaLocalRef<jobject> j_buffer(Java_MediaCodecBridge_getInputBuffer(
-      env, j_media_codec_.obj(), input_buffer_index));
-  *data = static_cast<uint8*>(env->GetDirectBufferAddress(j_buffer.obj()));
-  *capacity = base::checked_cast<size_t>(
-      env->GetDirectBufferCapacity(j_buffer.obj()));
-}
-
-bool MediaCodecBridge::CopyFromOutputBuffer(int index,
-                                            size_t offset,
-                                            void* dst,
-                                            int dst_size) {
-  void* src_data = nullptr;
-  int src_capacity = GetOutputBufferAddress(index, offset, &src_data);
-  if (src_capacity < dst_size)
-    return false;
-  memcpy(dst, src_data, dst_size);
-  return true;
-}
-
-int MediaCodecBridge::GetOutputBufferAddress(int index,
-                                             size_t offset,
-                                             void** addr) {
-  JNIEnv* env = AttachCurrentThread();
-  ScopedJavaLocalRef<jobject> j_buffer(
-      Java_MediaCodecBridge_getOutputBuffer(env, j_media_codec_.obj(), index));
-  *addr = reinterpret_cast<uint8*>(
-      env->GetDirectBufferAddress(j_buffer.obj())) + offset;
-  return env->GetDirectBufferCapacity(j_buffer.obj()) - offset;
+  return 0;
 }
 
 bool MediaCodecBridge::FillInputBuffer(int index,
                                        const uint8* data,
                                        size_t size) {
-  uint8* dst = NULL;
+  uint8* dst = nullptr;
   size_t capacity = 0;
   GetInputBuffer(index, &dst, &capacity);
   CHECK(dst);
 
   if (size > capacity) {
     LOG(ERROR) << "Input buffer size " << size
                << " exceeds MediaCodec input buffer capacity: " << capacity;
     return false;
   }
 
   memcpy(dst, data, size);
   return true;
 }
 
-AudioCodecBridge::AudioCodecBridge(const std::string& mime)
-    // Audio codec doesn't care about security level and there is no need for
-    // audio encoding yet.
-    : MediaCodecBridge(mime, false, MEDIA_CODEC_DECODER) {}
-
-bool AudioCodecBridge::Start(const AudioCodec& codec,
-                             int sample_rate,
-                             int channel_count,
-                             const uint8* extra_data,
-                             size_t extra_data_size,
-                             int64 codec_delay_ns,
-                             int64 seek_preroll_ns,
-                             bool play_audio,
-                             jobject media_crypto) {
-  JNIEnv* env = AttachCurrentThread();
-
-  if (!media_codec())
-    return false;
-
-  std::string codec_string = AudioCodecToAndroidMimeType(codec);
-  if (codec_string.empty())
-    return false;
-
-  ScopedJavaLocalRef<jstring> j_mime =
-      ConvertUTF8ToJavaString(env, codec_string);
-  ScopedJavaLocalRef<jobject> j_format(Java_MediaCodecBridge_createAudioFormat(
-      env, j_mime.obj(), sample_rate, channel_count));
-  DCHECK(!j_format.is_null());
-
-  if (!ConfigureMediaFormat(j_format.obj(), codec, extra_data, extra_data_size,
-                            codec_delay_ns, seek_preroll_ns)) {
-    return false;
-  }
-
-  if (!Java_MediaCodecBridge_configureAudio(
-           env, media_codec(), j_format.obj(), media_crypto, 0, play_audio)) {
-    return false;
-  }
-
-  return StartInternal();
-}
-
-bool AudioCodecBridge::ConfigureMediaFormat(jobject j_format,
-                                            const AudioCodec& codec,
-                                            const uint8* extra_data,
-                                            size_t extra_data_size,
-                                            int64 codec_delay_ns,
-                                            int64 seek_preroll_ns) {
-  if (extra_data_size == 0 && codec != kCodecOpus)
-    return true;
-
-  JNIEnv* env = AttachCurrentThread();
-  switch (codec) {
-    case kCodecVorbis: {
-      if (extra_data[0] != 2) {
-        LOG(ERROR) << "Invalid number of vorbis headers before the codec "
-                   << "header: " << extra_data[0];
-        return false;
-      }
-
-      size_t header_length[2];
-      // |total_length| keeps track of the total number of bytes before the last
-      // header.
-      size_t total_length = 1;
-      const uint8* current_pos = extra_data;
-      // Calculate the length of the first 2 headers.
-      for (int i = 0; i < 2; ++i) {
-        header_length[i] = 0;
-        while (total_length < extra_data_size) {
-          size_t size = *(++current_pos);
-          total_length += 1 + size;
-          if (total_length > 0x80000000) {
-            LOG(ERROR) << "Vorbis header size too large";
-            return false;
-          }
-          header_length[i] += size;
-          if (size < 0xFF)
-            break;
-        }
-        if (total_length >= extra_data_size) {
-          LOG(ERROR) << "Invalid vorbis header size in the extra data";
-          return false;
-        }
-      }
-      current_pos++;
-      // The first header is identification header.
-      ScopedJavaLocalRef<jbyteArray> first_header =
-          base::android::ToJavaByteArray(env, current_pos, header_length[0]);
-      Java_MediaCodecBridge_setCodecSpecificData(
-          env, j_format, 0, first_header.obj());
-      // The last header is codec header.
-      ScopedJavaLocalRef<jbyteArray> last_header =
-          base::android::ToJavaByteArray(
-              env, extra_data + total_length, extra_data_size - total_length);
-      Java_MediaCodecBridge_setCodecSpecificData(
-          env, j_format, 1, last_header.obj());
-      break;
-    }
-    case kCodecAAC: {
-      media::BitReader reader(extra_data, extra_data_size);
-
-      // The following code is copied from aac.cc
-      // TODO(qinmin): refactor the code in aac.cc to make it more reusable.
-      uint8 profile = 0;
-      uint8 frequency_index = 0;
-      uint8 channel_config = 0;
-      RETURN_ON_ERROR(reader.ReadBits(5, &profile));
-      RETURN_ON_ERROR(reader.ReadBits(4, &frequency_index));
-
-      if (0xf == frequency_index)
-        RETURN_ON_ERROR(reader.SkipBits(24));
-      RETURN_ON_ERROR(reader.ReadBits(4, &channel_config));
-
-      if (profile == 5 || profile == 29) {
-        // Read extension config.
-        RETURN_ON_ERROR(reader.ReadBits(4, &frequency_index));
-        if (frequency_index == 0xf)
-          RETURN_ON_ERROR(reader.SkipBits(24));
-        RETURN_ON_ERROR(reader.ReadBits(5, &profile));
-      }
-
-      if (profile < 1 || profile > 4 || frequency_index == 0xf ||
-          channel_config > 7) {
-        LOG(ERROR) << "Invalid AAC header";
-        return false;
-      }
-      const size_t kCsdLength = 2;
-      uint8 csd[kCsdLength];
-      csd[0] = profile << 3 | frequency_index >> 1;
-      csd[1] = (frequency_index & 0x01) << 7 | channel_config << 3;
-      ScopedJavaLocalRef<jbyteArray> byte_array =
-          base::android::ToJavaByteArray(env, csd, kCsdLength);
-      Java_MediaCodecBridge_setCodecSpecificData(
-          env, j_format, 0, byte_array.obj());
-
-      // TODO(qinmin): pass an extra variable to this function to determine
-      // whether we need to call this.
-      Java_MediaCodecBridge_setFrameHasADTSHeader(env, j_format);
-      break;
-    }
-    case kCodecOpus: {
-      if (!extra_data || extra_data_size == 0 ||
-          codec_delay_ns < 0 || seek_preroll_ns < 0) {
-        LOG(ERROR) << "Invalid Opus Header";
-        return false;
-      }
-
-      // csd0 - Opus Header
-      ScopedJavaLocalRef<jbyteArray> csd0 =
-          base::android::ToJavaByteArray(env, extra_data, extra_data_size);
-      Java_MediaCodecBridge_setCodecSpecificData(env, j_format, 0, csd0.obj());
-
-      // csd1 - Codec Delay
-      ScopedJavaLocalRef<jbyteArray> csd1 =
-          base::android::ToJavaByteArray(
-              env, reinterpret_cast<const uint8*>(&codec_delay_ns),
-              sizeof(int64_t));
-      Java_MediaCodecBridge_setCodecSpecificData(env, j_format, 1, csd1.obj());
-
-      // csd2 - Seek Preroll
-      ScopedJavaLocalRef<jbyteArray> csd2 =
-          base::android::ToJavaByteArray(
-              env, reinterpret_cast<const uint8*>(&seek_preroll_ns),
-              sizeof(int64_t));
-      Java_MediaCodecBridge_setCodecSpecificData(env, j_format, 2, csd2.obj());
-      break;
-    }
-    default:
-      LOG(ERROR) << "Invalid header encountered for codec: "
-                 << AudioCodecToAndroidMimeType(codec);
-      return false;
-  }
-  return true;
-}
-
-int64 AudioCodecBridge::PlayOutputBuffer(int index,
-                                         size_t size,
-                                         size_t offset,
-                                         bool postpone) {
-  DCHECK_LE(0, index);
-  int numBytes = base::checked_cast<int>(size);
-
-  void* buffer = nullptr;
-  int capacity = GetOutputBufferAddress(index, offset, &buffer);
-  numBytes = std::min(capacity, numBytes);
-  CHECK_GE(numBytes, 0);
-
-  JNIEnv* env = AttachCurrentThread();
-  ScopedJavaLocalRef<jbyteArray> byte_array = base::android::ToJavaByteArray(
-          env, static_cast<uint8*>(buffer), numBytes);
-  return Java_MediaCodecBridge_playOutputBuffer(env, media_codec(),
-                                                byte_array.obj(), postpone);
-}
-
-void AudioCodecBridge::SetVolume(double volume) {
-  JNIEnv* env = AttachCurrentThread();
-  Java_MediaCodecBridge_setVolume(env, media_codec(), volume);
-}
-
-// static
-AudioCodecBridge* AudioCodecBridge::Create(const AudioCodec& codec) {
-  if (!MediaCodecBridge::IsAvailable())
-    return NULL;
-
-  const std::string mime = AudioCodecToAndroidMimeType(codec);
-  return mime.empty() ? NULL : new AudioCodecBridge(mime);
-}
-
-// static
-bool AudioCodecBridge::IsKnownUnaccelerated(const AudioCodec& codec) {
-  return MediaCodecBridge::IsKnownUnaccelerated(
-      AudioCodecToAndroidMimeType(codec), MEDIA_CODEC_DECODER);
-}
-
-// static
-bool VideoCodecBridge::IsKnownUnaccelerated(const VideoCodec& codec,
-                                            MediaCodecDirection direction) {
-  return MediaCodecBridge::IsKnownUnaccelerated(
-      VideoCodecToAndroidMimeType(codec), direction);
-}
-
-// static
-VideoCodecBridge* VideoCodecBridge::CreateDecoder(const VideoCodec& codec,
-                                                  bool is_secure,
-                                                  const gfx::Size& size,
-                                                  jobject surface,
-                                                  jobject media_crypto) {
-  if (!MediaCodecBridge::IsAvailable())
-    return NULL;
-
-  const std::string mime = VideoCodecToAndroidMimeType(codec);
-  if (mime.empty())
-    return NULL;
-
-  scoped_ptr<VideoCodecBridge> bridge(
-      new VideoCodecBridge(mime, is_secure, MEDIA_CODEC_DECODER));
-  if (!bridge->media_codec())
-    return NULL;
-
-  JNIEnv* env = AttachCurrentThread();
-  ScopedJavaLocalRef<jstring> j_mime = ConvertUTF8ToJavaString(env, mime);
-  ScopedJavaLocalRef<jobject> j_format(
-      Java_MediaCodecBridge_createVideoDecoderFormat(
-          env, j_mime.obj(), size.width(), size.height()));
-  DCHECK(!j_format.is_null());
-  if (!Java_MediaCodecBridge_configureVideo(env,
-                                            bridge->media_codec(),
-                                            j_format.obj(),
-                                            surface,
-                                            media_crypto,
-                                            0)) {
-    return NULL;
-  }
-
-  return bridge->StartInternal() ? bridge.release() : NULL;
-}
-
-// static
-VideoCodecBridge* VideoCodecBridge::CreateEncoder(const VideoCodec& codec,
-                                                  const gfx::Size& size,
-                                                  int bit_rate,
-                                                  int frame_rate,
-                                                  int i_frame_interval,
-                                                  int color_format) {
-  if (!MediaCodecBridge::IsAvailable())
-    return NULL;
-
-  const std::string mime = VideoCodecToAndroidMimeType(codec);
-  if (mime.empty())
-    return NULL;
-
-  scoped_ptr<VideoCodecBridge> bridge(
-      new VideoCodecBridge(mime, false, MEDIA_CODEC_ENCODER));
-  if (!bridge->media_codec())
-    return NULL;
-
-  JNIEnv* env = AttachCurrentThread();
-  ScopedJavaLocalRef<jstring> j_mime = ConvertUTF8ToJavaString(env, mime);
-  ScopedJavaLocalRef<jobject> j_format(
-      Java_MediaCodecBridge_createVideoEncoderFormat(env,
-                                                     j_mime.obj(),
-                                                     size.width(),
-                                                     size.height(),
-                                                     bit_rate,
-                                                     frame_rate,
-                                                     i_frame_interval,
-                                                     color_format));
-  DCHECK(!j_format.is_null());
-  if (!Java_MediaCodecBridge_configureVideo(env,
-                                            bridge->media_codec(),
-                                            j_format.obj(),
-                                            NULL,
-                                            NULL,
-                                            kConfigureFlagEncode)) {
-    return NULL;
-  }
-
-  return bridge->StartInternal() ? bridge.release() : NULL;
-}
-
-VideoCodecBridge::VideoCodecBridge(const std::string& mime,
-                                   bool is_secure,
-                                   MediaCodecDirection direction)
-    : MediaCodecBridge(mime, is_secure, direction),
-      adaptive_playback_supported_for_testing_(-1) {}
-
-void VideoCodecBridge::SetVideoBitrate(int bps) {
-  JNIEnv* env = AttachCurrentThread();
-  Java_MediaCodecBridge_setVideoBitrate(env, media_codec(), bps);
-}
-
-void VideoCodecBridge::RequestKeyFrameSoon() {
-  JNIEnv* env = AttachCurrentThread();
-  Java_MediaCodecBridge_requestKeyFrameSoon(env, media_codec());
-}
-
-bool VideoCodecBridge::IsAdaptivePlaybackSupported(int width, int height) {
-  if (adaptive_playback_supported_for_testing_ == 0)
-    return false;
-  else if (adaptive_playback_supported_for_testing_ > 0)
-    return true;
-  JNIEnv* env = AttachCurrentThread();
-  return Java_MediaCodecBridge_isAdaptivePlaybackSupported(
-      env, media_codec(), width, height);
-}
-
-bool MediaCodecBridge::RegisterMediaCodecBridge(JNIEnv* env) {
-  return RegisterNativesImpl(env);
-}
-
 }  // namespace media