media: Clean up MediaCodecBridge and remove subclasses

media/base/android/media_codec_bridge_impl.cc

Index: media/base/android/media_codec_bridge_impl.cc
diff --git a/media/base/android/media_codec_bridge_impl.cc b/media/base/android/media_codec_bridge_impl.cc
index 15a33a421961ca7d36121852d8a94e803390c34d..e45a134df92817171582629fe7844c27b136e5be 100644
--- a/media/base/android/media_codec_bridge_impl.cc
+++ b/media/base/android/media_codec_bridge_impl.cc
@@ -14,12 +14,15 @@
 #include "base/android/jni_array.h"
 #include "base/android/jni_string.h"
 #include "base/logging.h"
+#include "base/memory/ptr_util.h"
 #include "base/numerics/safe_conversions.h"
 #include "base/strings/string_util.h"
 #include "jni/MediaCodecBridge_jni.h"
 #include "media/base/android/media_codec_util.h"
+#include "media/base/audio_codecs.h"
 #include "media/base/bit_reader.h"
 #include "media/base/subsample_entry.h"
+#include "media/base/video_codecs.h"
 
 using base::android::AttachCurrentThread;
 using base::android::ConvertJavaStringToUTF8;
@@ -44,49 +47,276 @@ enum {
   kConfigureFlagEncode = 1,    // CONFIGURE_FLAG_ENCODE
 };
 
-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";
-    case kCodecAC3:
-      return "audio/ac3";
-    case kCodecEAC3:
-      return "audio/eac3";
-    default:
-      return std::string();
-  }
-}
+// Parses |extra_data| and sets the appropriate fields of the given MediaFormat.
+bool ConfigureMediaFormatForAudio(jobject j_format,
+                                  AudioCodec codec,
+                                  const uint8_t* extra_data,
+                                  size_t extra_data_size,
+                                  int64_t codec_delay_ns,
+                                  int64_t seek_preroll_ns) {
+  if (extra_data_size == 0 && codec != kCodecOpus)
+    return true;
 
-const std::string VideoCodecToAndroidMimeType(const VideoCodec& codec) {
+  JNIEnv* env = AttachCurrentThread();
   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";
+    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_t* 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);
+      // 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);
+      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_t profile = 0;
+      uint8_t frequency_index = 0;
+      uint8_t 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_t 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);
+
+      // 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);
+
+      // csd1 - Codec Delay
+      ScopedJavaLocalRef<jbyteArray> csd1 = base::android::ToJavaByteArray(
+          env, reinterpret_cast<const uint8_t*>(&codec_delay_ns),
+          sizeof(int64_t));
+      Java_MediaCodecBridge_setCodecSpecificData(env, j_format, 1, csd1);
+
+      // csd2 - Seek Preroll
+      ScopedJavaLocalRef<jbyteArray> csd2 = base::android::ToJavaByteArray(
+          env, reinterpret_cast<const uint8_t*>(&seek_preroll_ns),
+          sizeof(int64_t));
+      Java_MediaCodecBridge_setCodecSpecificData(env, j_format, 2, csd2);
+      break;
+    }
     default:
-      return std::string();
+      LOG(ERROR) << "Invalid header encountered for codec: "
+                 << GetCodecName(codec);
+      return false;
   }
-}
-
-static ScopedJavaLocalRef<jintArray>
-ToJavaIntArray(JNIEnv* env, std::unique_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;
+  return true;
 }
 
 }  // namespace
 
+// static
+std::unique_ptr<MediaCodecBridge> MediaCodecBridgeImpl::CreateAudioDecoder(
+    const AudioDecoderConfig& config,
+    jobject media_crypto) {
+  DVLOG(2) << __func__ << ": " << config.AsHumanReadableString()
+           << " media_crypto:" << media_crypto;
+
+  if (!MediaCodecUtil::IsMediaCodecAvailable())
+    return nullptr;
+
+  const std::string mime =
+      MediaCodecUtil::CodecToAndroidMimeType(config.codec());
+  if (mime.empty())
+    return nullptr;
+
+  auto bridge = base::WrapUnique(new MediaCodecBridgeImpl(
+      mime, false, MediaCodecDirection::DECODER, false));
+  if (bridge->j_bridge_.is_null())
+    return nullptr;
+
+  JNIEnv* env = AttachCurrentThread();
+  ScopedJavaLocalRef<jstring> j_mime = ConvertUTF8ToJavaString(env, mime);
+
+  const int channel_count =
+      ChannelLayoutToChannelCount(config.channel_layout());
+  ScopedJavaLocalRef<jobject> j_format(Java_MediaCodecBridge_createAudioFormat(
+      env, j_mime, config.samples_per_second(), channel_count));
+  DCHECK(!j_format.is_null());
+
+  // It's important that the multiplication is first in this calculation to
+  // reduce the precision loss due to integer truncation.
+  const int64_t codec_delay_ns = base::Time::kNanosecondsPerSecond *
+                                 config.codec_delay() /
+                                 config.samples_per_second();
+  const int64_t seek_preroll_ns = config.seek_preroll().InMicroseconds() *
+                                  base::Time::kNanosecondsPerMicrosecond;
+  if (!ConfigureMediaFormatForAudio(
+          j_format.obj(), config.codec(), config.extra_data().data(),
+          config.extra_data().size(), codec_delay_ns, seek_preroll_ns)) {
+    return nullptr;
+  }
+
+  if (!Java_MediaCodecBridge_configureAudio(env, bridge->j_bridge_, j_format,
+                                            media_crypto, 0)) {
+    return nullptr;
+  }
+
+  return bridge->Start() ? std::move(bridge) : nullptr;
+}
+
+// static
+std::unique_ptr<MediaCodecBridge> MediaCodecBridgeImpl::CreateVideoDecoder(
+    VideoCodec codec,
+    bool is_secure,
+    const gfx::Size& size,
+    jobject surface,
+    jobject media_crypto,
+    const std::vector<uint8_t>& csd0,
+    const std::vector<uint8_t>& csd1,
+    bool allow_adaptive_playback,
+    bool require_software_codec) {
+  if (!MediaCodecUtil::IsMediaCodecAvailable())
+    return nullptr;
+
+  const std::string mime = MediaCodecUtil::CodecToAndroidMimeType(codec);
+  if (mime.empty())
+    return nullptr;
+
+  std::unique_ptr<MediaCodecBridgeImpl> bridge(new MediaCodecBridgeImpl(
+      mime, is_secure, MediaCodecDirection::DECODER, require_software_codec));
+  if (bridge->j_bridge_.is_null())
+    return nullptr;
+
+  JNIEnv* env = AttachCurrentThread();
+  ScopedJavaLocalRef<jstring> j_mime = ConvertUTF8ToJavaString(env, mime);
+  ScopedJavaLocalRef<jobject> j_format(
+      Java_MediaCodecBridge_createVideoDecoderFormat(env, j_mime, size.width(),
+                                                     size.height()));
+  DCHECK(!j_format.is_null());
+
+  if (!csd0.empty()) {
+    ScopedJavaLocalRef<jbyteArray> j_csd0 =
+        base::android::ToJavaByteArray(env, csd0.data(), csd0.size());
+    Java_MediaCodecBridge_setCodecSpecificData(env, j_format, 0, j_csd0);
+  }
+
+  if (!csd1.empty()) {
+    ScopedJavaLocalRef<jbyteArray> j_csd1 =
+        base::android::ToJavaByteArray(env, csd1.data(), csd1.size());
+    Java_MediaCodecBridge_setCodecSpecificData(env, j_format, 1, j_csd1);
+  }
+
+  if (!Java_MediaCodecBridge_configureVideo(env, bridge->j_bridge_, j_format,
+                                            surface, media_crypto, 0,
+                                            allow_adaptive_playback)) {
+    return nullptr;
+  }
+
+  return bridge->Start() ? std::move(bridge) : nullptr;
+}
+
+// static
+std::unique_ptr<MediaCodecBridge> MediaCodecBridgeImpl::CreateVideoEncoder(
+    VideoCodec codec,
+    const gfx::Size& size,
+    int bit_rate,
+    int frame_rate,
+    int i_frame_interval,
+    int color_format) {
+  if (!MediaCodecUtil::IsMediaCodecAvailable())
+    return nullptr;
+
+  const std::string mime = MediaCodecUtil::CodecToAndroidMimeType(codec);
+  if (mime.empty())
+    return nullptr;
+
+  std::unique_ptr<MediaCodecBridgeImpl> bridge(new MediaCodecBridgeImpl(
+      mime, false, MediaCodecDirection::ENCODER, false));
+  if (bridge->j_bridge_.is_null())
+    return nullptr;
+
+  JNIEnv* env = AttachCurrentThread();
+  ScopedJavaLocalRef<jstring> j_mime = ConvertUTF8ToJavaString(env, mime);
+  ScopedJavaLocalRef<jobject> j_format(
+      Java_MediaCodecBridge_createVideoEncoderFormat(
+          env, bridge->j_bridge_, j_mime, size.width(), size.height(), bit_rate,
+          frame_rate, i_frame_interval, color_format));
+  DCHECK(!j_format.is_null());
+  if (!Java_MediaCodecBridge_configureVideo(env, bridge->j_bridge_, j_format,
+                                            nullptr, nullptr,
+                                            kConfigureFlagEncode, true)) {
+    return nullptr;
+  }
+
+  return bridge->Start() ? std::move(bridge) : nullptr;
+}
+
 MediaCodecBridgeImpl::MediaCodecBridgeImpl(const std::string& mime,
                                            bool is_secure,
                                            MediaCodecDirection direction,
@@ -94,36 +324,37 @@ MediaCodecBridgeImpl::MediaCodecBridgeImpl(const std::string& mime,
   JNIEnv* env = AttachCurrentThread();
   DCHECK(!mime.empty());
   ScopedJavaLocalRef<jstring> j_mime = ConvertUTF8ToJavaString(env, mime);
-  j_media_codec_.Reset(Java_MediaCodecBridge_create(
-      env, j_mime, is_secure, direction, require_software_codec));
+  j_bridge_.Reset(Java_MediaCodecBridge_create(env, j_mime, is_secure,
+                                               static_cast<int>(direction),
+                                               require_software_codec));
 }
 
 MediaCodecBridgeImpl::~MediaCodecBridgeImpl() {
   JNIEnv* env = AttachCurrentThread();
-  if (j_media_codec_.obj())
-    Java_MediaCodecBridge_release(env, j_media_codec_);
+  if (j_bridge_.obj())
+    Java_MediaCodecBridge_release(env, j_bridge_);
 }
 
 bool MediaCodecBridgeImpl::Start() {
   JNIEnv* env = AttachCurrentThread();
-  return Java_MediaCodecBridge_start(env, j_media_codec_);
+  return Java_MediaCodecBridge_start(env, j_bridge_);
 }
 
 void MediaCodecBridgeImpl::Stop() {
   JNIEnv* env = AttachCurrentThread();
-  Java_MediaCodecBridge_stop(env, j_media_codec_);
+  Java_MediaCodecBridge_stop(env, j_bridge_);
 }
 
 MediaCodecStatus MediaCodecBridgeImpl::Flush() {
   JNIEnv* env = AttachCurrentThread();
   return static_cast<MediaCodecStatus>(
-      Java_MediaCodecBridge_flush(env, j_media_codec_));
+      Java_MediaCodecBridge_flush(env, j_bridge_));
 }
 
 MediaCodecStatus MediaCodecBridgeImpl::GetOutputSize(gfx::Size* size) {
   JNIEnv* env = AttachCurrentThread();
   ScopedJavaLocalRef<jobject> result =
-      Java_MediaCodecBridge_getOutputFormat(env, j_media_codec_);
+      Java_MediaCodecBridge_getOutputFormat(env, j_bridge_);
   MediaCodecStatus status = static_cast<MediaCodecStatus>(
       Java_GetOutputFormatResult_status(env, result));
   if (status == MEDIA_CODEC_OK) {
@@ -137,7 +368,7 @@ MediaCodecStatus MediaCodecBridgeImpl::GetOutputSamplingRate(
     int* sampling_rate) {
   JNIEnv* env = AttachCurrentThread();
   ScopedJavaLocalRef<jobject> result =
-      Java_MediaCodecBridge_getOutputFormat(env, j_media_codec_);
+      Java_MediaCodecBridge_getOutputFormat(env, j_bridge_);
   MediaCodecStatus status = static_cast<MediaCodecStatus>(
       Java_GetOutputFormatResult_status(env, result));
   if (status == MEDIA_CODEC_OK)
@@ -149,7 +380,7 @@ MediaCodecStatus MediaCodecBridgeImpl::GetOutputChannelCount(
     int* channel_count) {
   JNIEnv* env = AttachCurrentThread();
   ScopedJavaLocalRef<jobject> result =
-      Java_MediaCodecBridge_getOutputFormat(env, j_media_codec_);
+      Java_MediaCodecBridge_getOutputFormat(env, j_bridge_);
   MediaCodecStatus status = static_cast<MediaCodecStatus>(
       Java_GetOutputFormatResult_status(env, result));
   if (status == MEDIA_CODEC_OK)
@@ -171,8 +402,8 @@ MediaCodecStatus MediaCodecBridgeImpl::QueueInputBuffer(
     return MEDIA_CODEC_ERROR;
   JNIEnv* env = AttachCurrentThread();
   return static_cast<MediaCodecStatus>(Java_MediaCodecBridge_queueInputBuffer(
-      env, j_media_codec_, index, 0, data_size,
-      presentation_time.InMicroseconds(), 0));
+      env, j_bridge_, index, 0, data_size, presentation_time.InMicroseconds(),
+      0));
 }
 
 MediaCodecStatus MediaCodecBridgeImpl::QueueSecureInputBuffer(
@@ -223,14 +454,14 @@ MediaCodecStatus MediaCodecBridgeImpl::QueueSecureInputBuffer(
     }
   }
 
-  ScopedJavaLocalRef<jintArray> clear_array =
-      ToJavaIntArray(env, std::move(native_clear_array), num_subsamples);
-  ScopedJavaLocalRef<jintArray> cypher_array =
-      ToJavaIntArray(env, std::move(native_cypher_array), num_subsamples);
+  ScopedJavaLocalRef<jintArray> clear_array = base::android::ToJavaIntArray(
+      env, native_clear_array.get(), num_subsamples);
+  ScopedJavaLocalRef<jintArray> cypher_array = base::android::ToJavaIntArray(
+      env, native_cypher_array.get(), num_subsamples);
 
   return static_cast<MediaCodecStatus>(
       Java_MediaCodecBridge_queueSecureInputBuffer(
-          env, j_media_codec_.obj(), index, 0, j_iv.obj(), j_key_id.obj(),
+          env, j_bridge_.obj(), index, 0, j_iv.obj(), j_key_id.obj(),
           clear_array, cypher_array, num_subsamples,
           static_cast<int>(encryption_scheme.mode()),
           static_cast<int>(encryption_scheme.pattern().encrypt_blocks()),
@@ -241,8 +472,8 @@ MediaCodecStatus MediaCodecBridgeImpl::QueueSecureInputBuffer(
 void MediaCodecBridgeImpl::QueueEOS(int input_buffer_index) {
   DVLOG(3) << __func__ << ": " << input_buffer_index;
   JNIEnv* env = AttachCurrentThread();
-  Java_MediaCodecBridge_queueInputBuffer(
-      env, j_media_codec_, input_buffer_index, 0, 0, 0, kBufferFlagEndOfStream);
+  Java_MediaCodecBridge_queueInputBuffer(env, j_bridge_, input_buffer_index, 0,
+                                         0, 0, kBufferFlagEndOfStream);
 }
 
 MediaCodecStatus MediaCodecBridgeImpl::DequeueInputBuffer(
@@ -250,7 +481,7 @@ MediaCodecStatus MediaCodecBridgeImpl::DequeueInputBuffer(
     int* index) {
   JNIEnv* env = AttachCurrentThread();
   ScopedJavaLocalRef<jobject> result = Java_MediaCodecBridge_dequeueInputBuffer(
-      env, j_media_codec_, timeout.InMicroseconds());
+      env, j_bridge_, timeout.InMicroseconds());
   *index = Java_DequeueInputResult_index(env, result);
   MediaCodecStatus status = static_cast<MediaCodecStatus>(
       Java_DequeueInputResult_status(env, result));
@@ -268,7 +499,7 @@ MediaCodecStatus MediaCodecBridgeImpl::DequeueOutputBuffer(
     bool* key_frame) {
   JNIEnv* env = AttachCurrentThread();
   ScopedJavaLocalRef<jobject> result =
-      Java_MediaCodecBridge_dequeueOutputBuffer(env, j_media_codec_,
+      Java_MediaCodecBridge_dequeueOutputBuffer(env, j_bridge_,
                                                 timeout.InMicroseconds());
   *index = Java_DequeueOutputResult_index(env, result);
   *offset =
@@ -295,15 +526,15 @@ MediaCodecStatus MediaCodecBridgeImpl::DequeueOutputBuffer(
 void MediaCodecBridgeImpl::ReleaseOutputBuffer(int index, bool render) {
   DVLOG(3) << __func__ << ": " << index;
   JNIEnv* env = AttachCurrentThread();
-  Java_MediaCodecBridge_releaseOutputBuffer(env, j_media_codec_, index, render);
+  Java_MediaCodecBridge_releaseOutputBuffer(env, j_bridge_, index, render);
 }
 
 MediaCodecStatus MediaCodecBridgeImpl::GetInputBuffer(int input_buffer_index,
                                                       uint8_t** data,
                                                       size_t* capacity) {
   JNIEnv* env = AttachCurrentThread();
-  ScopedJavaLocalRef<jobject> j_buffer(Java_MediaCodecBridge_getInputBuffer(
-      env, j_media_codec_, input_buffer_index));
+  ScopedJavaLocalRef<jobject> j_buffer(
+      Java_MediaCodecBridge_getInputBuffer(env, j_bridge_, input_buffer_index));
   if (j_buffer.is_null())
     return MEDIA_CODEC_ERROR;
 
@@ -335,7 +566,7 @@ MediaCodecStatus MediaCodecBridgeImpl::GetOutputBufferAddress(
     size_t* capacity) {
   JNIEnv* env = AttachCurrentThread();
   ScopedJavaLocalRef<jobject> j_buffer(
-      Java_MediaCodecBridge_getOutputBuffer(env, j_media_codec_, index));
+      Java_MediaCodecBridge_getOutputBuffer(env, j_bridge_, index));
   if (j_buffer.is_null())
     return MEDIA_CODEC_ERROR;
   const size_t total_capacity = env->GetDirectBufferCapacity(j_buffer.obj());
@@ -352,10 +583,31 @@ std::string MediaCodecBridgeImpl::GetName() {
     return "";
   JNIEnv* env = AttachCurrentThread();
   ScopedJavaLocalRef<jstring> j_name =
-      Java_MediaCodecBridge_getName(env, j_media_codec_);
+      Java_MediaCodecBridge_getName(env, j_bridge_);
   return ConvertJavaStringToUTF8(env, j_name);
 }
 
+bool MediaCodecBridgeImpl::SetSurface(jobject surface) {
+  DCHECK_GE(base::android::BuildInfo::GetInstance()->sdk_int(), 23);
+  JNIEnv* env = AttachCurrentThread();
+  return Java_MediaCodecBridge_setSurface(env, j_bridge_, surface);
+}
+
+void MediaCodecBridgeImpl::SetVideoBitrate(int bps, int frame_rate) {
+  JNIEnv* env = AttachCurrentThread();
+  Java_MediaCodecBridge_setVideoBitrate(env, j_bridge_, bps, frame_rate);
+}
+
+void MediaCodecBridgeImpl::RequestKeyFrameSoon() {
+  JNIEnv* env = AttachCurrentThread();
+  Java_MediaCodecBridge_requestKeyFrameSoon(env, j_bridge_);
+}
+
+bool MediaCodecBridgeImpl::IsAdaptivePlaybackSupported() {
+  JNIEnv* env = AttachCurrentThread();
+  return Java_MediaCodecBridge_isAdaptivePlaybackSupported(env, j_bridge_);
+}
+
 bool MediaCodecBridgeImpl::FillInputBuffer(int index,
                                            const uint8_t* data,
                                            size_t size) {
@@ -377,346 +629,4 @@ bool MediaCodecBridgeImpl::FillInputBuffer(int index,
   return true;
 }
 
-// static
-AudioCodecBridge* AudioCodecBridge::Create(const AudioCodec& codec) {
-  if (!MediaCodecUtil::IsMediaCodecAvailable())
-    return nullptr;
-
-  const std::string mime = AudioCodecToAndroidMimeType(codec);
-  if (mime.empty())
-    return nullptr;
-
-  std::unique_ptr<AudioCodecBridge> bridge(new AudioCodecBridge(mime));
-  if (!bridge->media_codec())
-    return nullptr;
-
-  return bridge.release();
-}
-
-// static
-bool AudioCodecBridge::IsKnownUnaccelerated(const AudioCodec& codec) {
-  return MediaCodecUtil::IsKnownUnaccelerated(
-      AudioCodecToAndroidMimeType(codec), MEDIA_CODEC_DECODER);
-}
-
-AudioCodecBridge::AudioCodecBridge(const std::string& mime)
-    // Audio codec doesn't care about security level and there is no need for
-    // audio encoding yet.
-    : MediaCodecBridgeImpl(mime, false, MEDIA_CODEC_DECODER, false) {}
-
-bool AudioCodecBridge::ConfigureAndStart(const AudioDecoderConfig& config,
-                                         jobject media_crypto) {
-  const int channel_count =
-      ChannelLayoutToChannelCount(config.channel_layout());
-  const int64_t codec_delay_ns = base::Time::kNanosecondsPerSecond *
-                                 config.codec_delay() /
-                                 config.samples_per_second();
-  const int64_t seek_preroll_ns =
-      1000LL * config.seek_preroll().InMicroseconds();
-
-  return ConfigureAndStart(config.codec(), config.samples_per_second(),
-                           channel_count, config.extra_data().data(),
-                           config.extra_data().size(), codec_delay_ns,
-                           seek_preroll_ns, media_crypto);
-}
-
-bool AudioCodecBridge::ConfigureAndStart(const AudioCodec& codec,
-                                         int sample_rate,
-                                         int channel_count,
-                                         const uint8_t* extra_data,
-                                         size_t extra_data_size,
-                                         int64_t codec_delay_ns,
-                                         int64_t seek_preroll_ns,
-                                         jobject media_crypto) {
-  DVLOG(2) << __func__ << ": "
-           << " codec:" << GetCodecName(codec)
-           << " samples_per_second:" << sample_rate
-           << " channel_count:" << channel_count
-           << " codec_delay_ns:" << codec_delay_ns
-           << " seek_preroll_ns:" << seek_preroll_ns
-           << " extra data size:" << extra_data_size
-           << " media_crypto:" << media_crypto;
-  DCHECK(media_codec());
-
-  std::string codec_string = AudioCodecToAndroidMimeType(codec);
-  if (codec_string.empty())
-    return false;
-
-  JNIEnv* env = AttachCurrentThread();
-
-  ScopedJavaLocalRef<jstring> j_mime =
-      ConvertUTF8ToJavaString(env, codec_string);
-  ScopedJavaLocalRef<jobject> j_format(Java_MediaCodecBridge_createAudioFormat(
-      env, j_mime, 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,
-                                            media_crypto, 0)) {
-    return false;
-  }
-
-  return Start();
-}
-
-bool AudioCodecBridge::ConfigureMediaFormat(jobject j_format,
-                                            const AudioCodec& codec,
-                                            const uint8_t* extra_data,
-                                            size_t extra_data_size,
-                                            int64_t codec_delay_ns,
-                                            int64_t 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_t* 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);
-      // 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);
-      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_t profile = 0;
-      uint8_t frequency_index = 0;
-      uint8_t 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_t 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);
-
-      // 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);
-
-      // csd1 - Codec Delay
-      ScopedJavaLocalRef<jbyteArray> csd1 = base::android::ToJavaByteArray(
-          env, reinterpret_cast<const uint8_t*>(&codec_delay_ns),
-          sizeof(int64_t));
-      Java_MediaCodecBridge_setCodecSpecificData(env, j_format, 1, csd1);
-
-      // csd2 - Seek Preroll
-      ScopedJavaLocalRef<jbyteArray> csd2 = base::android::ToJavaByteArray(
-          env, reinterpret_cast<const uint8_t*>(&seek_preroll_ns),
-          sizeof(int64_t));
-      Java_MediaCodecBridge_setCodecSpecificData(env, j_format, 2, csd2);
-      break;
-    }
-    default:
-      LOG(ERROR) << "Invalid header encountered for codec: "
-                 << AudioCodecToAndroidMimeType(codec);
-      return false;
-  }
-  return true;
-}
-
-// static
-bool VideoCodecBridge::IsKnownUnaccelerated(const VideoCodec& codec,
-                                            MediaCodecDirection direction) {
-  return MediaCodecUtil::IsKnownUnaccelerated(
-      VideoCodecToAndroidMimeType(codec), direction);
-}
-
-// static
-VideoCodecBridge* VideoCodecBridge::CreateDecoder(
-    const VideoCodec& codec,
-    bool is_secure,
-    const gfx::Size& size,
-    jobject surface,
-    jobject media_crypto,
-    const std::vector<uint8_t>& csd0,
-    const std::vector<uint8_t>& csd1,
-    bool allow_adaptive_playback,
-    bool require_software_codec) {
-  if (!MediaCodecUtil::IsMediaCodecAvailable())
-    return nullptr;
-
-  const std::string mime = VideoCodecToAndroidMimeType(codec);
-  if (mime.empty())
-    return nullptr;
-
-  std::unique_ptr<VideoCodecBridge> bridge(new VideoCodecBridge(
-      mime, is_secure, MEDIA_CODEC_DECODER, require_software_codec));
-  if (!bridge->media_codec())
-    return nullptr;
-
-  JNIEnv* env = AttachCurrentThread();
-  ScopedJavaLocalRef<jstring> j_mime = ConvertUTF8ToJavaString(env, mime);
-  ScopedJavaLocalRef<jobject> j_format(
-      Java_MediaCodecBridge_createVideoDecoderFormat(env, j_mime, size.width(),
-                                                     size.height()));
-  DCHECK(!j_format.is_null());
-
-  if (!csd0.empty()) {
-    ScopedJavaLocalRef<jbyteArray> j_csd0 =
-        base::android::ToJavaByteArray(env, csd0.data(), csd0.size());
-    Java_MediaCodecBridge_setCodecSpecificData(env, j_format, 0, j_csd0);
-  }
-
-  if (!csd1.empty()) {
-    ScopedJavaLocalRef<jbyteArray> j_csd1 =
-        base::android::ToJavaByteArray(env, csd1.data(), csd1.size());
-    Java_MediaCodecBridge_setCodecSpecificData(env, j_format, 1, j_csd1);
-  }
-
-  if (!Java_MediaCodecBridge_configureVideo(env, bridge->media_codec(),
-                                            j_format, surface, media_crypto, 0,
-                                            allow_adaptive_playback)) {
-    return nullptr;
-  }
-
-  return bridge->Start() ? bridge.release() : nullptr;
-}
-
-// 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 (!MediaCodecUtil::IsMediaCodecAvailable())
-    return nullptr;
-
-  const std::string mime = VideoCodecToAndroidMimeType(codec);
-  if (mime.empty())
-    return nullptr;
-
-  std::unique_ptr<VideoCodecBridge> bridge(
-      new VideoCodecBridge(mime, false, MEDIA_CODEC_ENCODER, false));
-  if (!bridge->media_codec())
-    return nullptr;
-
-  JNIEnv* env = AttachCurrentThread();
-  ScopedJavaLocalRef<jstring> j_mime = ConvertUTF8ToJavaString(env, mime);
-  ScopedJavaLocalRef<jobject> j_format(
-      Java_MediaCodecBridge_createVideoEncoderFormat(
-          env, bridge->media_codec(), j_mime, 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, nullptr, nullptr,
-                                            kConfigureFlagEncode, true)) {
-    return nullptr;
-  }
-
-  return bridge->Start() ? bridge.release() : nullptr;
-}
-
-VideoCodecBridge::VideoCodecBridge(const std::string& mime,
-                                   bool is_secure,
-                                   MediaCodecDirection direction,
-                                   bool require_software_codec)
-    : MediaCodecBridgeImpl(mime, is_secure, direction, require_software_codec),
-      adaptive_playback_supported_for_testing_(-1) {}
-
-bool VideoCodecBridge::SetSurface(jobject surface) {
-  DCHECK_GE(base::android::BuildInfo::GetInstance()->sdk_int(), 23);
-  JNIEnv* env = AttachCurrentThread();
-  return Java_MediaCodecBridge_setSurface(env, media_codec(), surface);
-}
-
-void VideoCodecBridge::SetVideoBitrate(int bps, int frame_rate) {
-  JNIEnv* env = AttachCurrentThread();
-  Java_MediaCodecBridge_setVideoBitrate(env, media_codec(), bps, frame_rate);
-}
-
-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);
-}
-
 }  // namespace media