Clean up. Experimental user avatars removed.

media/formats/webm/chromeos/webm_encoder.cc

Index: media/formats/webm/chromeos/webm_encoder.cc
diff --git a/media/formats/webm/chromeos/webm_encoder.cc b/media/formats/webm/chromeos/webm_encoder.cc
deleted file mode 100644
index 4b5c782452d2a103202aff86bebae75afdb9539b..0000000000000000000000000000000000000000
--- a/media/formats/webm/chromeos/webm_encoder.cc
+++ /dev/null
@@ -1,321 +0,0 @@
-// Copyright 2014 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/formats/webm/chromeos/webm_encoder.h"
-
-#include "base/bind.h"
-#include "base/file_util.h"
-#include "base/logging.h"
-#include "base/memory/scoped_ptr.h"
-#include "libyuv/convert.h"
-#include "libyuv/video_common.h"
-#include "third_party/skia/include/core/SkBitmap.h"
-
-extern "C" {
-// Getting the right degree of C compatibility has been a constant struggle.
-// - Stroustrup, C++ Report, 12(7), July/August 2000.
-#define private priv
-#include "third_party/libvpx/source/libvpx/third_party/libmkv/EbmlIDs.h"
-#include "third_party/libvpx/source/libvpx/third_party/libmkv/EbmlWriter.h"
-#undef private
-}
-
-// Number of encoder threads to use.
-static const int kNumEncoderThreads = 2;
-
-// Need a fixed size serializer for the track ID. libmkv provides a 64 bit
-// one, but not a 32 bit one.
-static void Ebml_SerializeUnsigned32(EbmlGlobal* ebml,
-                                     unsigned long class_id,
-                                     uint64_t value) {
-  uint8 size_serialized = 4 | 0x80;
-  Ebml_WriteID(ebml, class_id);
-  Ebml_Serialize(ebml, &size_serialized, sizeof(size_serialized), 1);
-  Ebml_Serialize(ebml, &value, sizeof(value), 4);
-}
-
-// Wrapper functor for vpx_codec_destroy().
-struct VpxCodecDeleter {
-  void operator()(vpx_codec_ctx_t* codec) {
-    vpx_codec_destroy(codec);
-  }
-};
-
-// Wrapper functor for vpx_img_free().
-struct VpxImgDeleter {
-  void operator()(vpx_image_t* image) {
-    vpx_img_free(image);
-  }
-};
-
-namespace media {
-
-namespace chromeos {
-
-WebmEncoder::WebmEncoder(const base::FilePath& output_path,
-                         int bitrate,
-                         bool realtime)
-    : bitrate_(bitrate),
-      deadline_(realtime ? VPX_DL_REALTIME : VPX_DL_GOOD_QUALITY),
-      output_path_(output_path),
-      has_errors_(false) {
-  ebml_writer_.write_cb = base::Bind(
-      &WebmEncoder::EbmlWrite, base::Unretained(this));
-  ebml_writer_.serialize_cb = base::Bind(
-      &WebmEncoder::EbmlSerialize, base::Unretained(this));
-}
-
-WebmEncoder::~WebmEncoder() {
-}
-
-bool WebmEncoder::EncodeFromSprite(const SkBitmap& sprite,
-                                   int fps_n,
-                                   int fps_d) {
-  DCHECK(!sprite.isNull());
-  DCHECK(!sprite.empty());
-
-  has_errors_ = false;
-  width_ = sprite.width();
-  height_ = sprite.width();
-  fps_.num = fps_n;
-  fps_.den = fps_d;
-
-  // Sprite is tiled vertically.
-  frame_count_ = sprite.height() / width_;
-
-  vpx_image_t image;
-  vpx_img_alloc(&image, VPX_IMG_FMT_I420, width_, height_, 16);
-  // Ensure that image is freed after return.
-  scoped_ptr<vpx_image_t, VpxImgDeleter> image_ptr(&image);
-
-  const vpx_codec_iface_t* codec_iface = vpx_codec_vp8_cx();
-  DCHECK(codec_iface);
-  vpx_codec_err_t ret = vpx_codec_enc_config_default(codec_iface, &config_, 0);
-  DCHECK_EQ(VPX_CODEC_OK, ret);
-
-  config_.rc_target_bitrate = bitrate_;
-  config_.g_w = width_;
-  config_.g_h = height_;
-  config_.g_pass = VPX_RC_ONE_PASS;
-  config_.g_profile = 0;          // Default profile.
-  config_.g_threads = kNumEncoderThreads;
-  config_.rc_min_quantizer = 0;
-  config_.rc_max_quantizer = 63;  // Maximum possible range.
-  config_.g_timebase.num = fps_.den;
-  config_.g_timebase.den = fps_.num;
-  config_.kf_mode = VPX_KF_AUTO;  // Auto key frames.
-
-  vpx_codec_ctx_t codec;
-  ret = vpx_codec_enc_init(&codec, codec_iface, &config_, 0);
-  if (ret != VPX_CODEC_OK)
-    return false;
-  // Ensure that codec context is freed after return.
-  scoped_ptr<vpx_codec_ctx_t, VpxCodecDeleter> codec_ptr(&codec);
-
-  SkAutoLockPixels lock_sprite(sprite);
-
-  const uint8* src = reinterpret_cast<const uint8*>(sprite.getAddr32(0, 0));
-  size_t src_frame_size = sprite.getSize();
-  int crop_y = 0;
-
-  if (!WriteWebmHeader())
-    return false;
-
-  for (size_t frame = 0; frame < frame_count_ && !has_errors_; ++frame) {
-    int res = libyuv::ConvertToI420(
-        src, src_frame_size,
-        image.planes[VPX_PLANE_Y], image.stride[VPX_PLANE_Y],
-        image.planes[VPX_PLANE_U], image.stride[VPX_PLANE_U],
-        image.planes[VPX_PLANE_V], image.stride[VPX_PLANE_V],
-        0, crop_y,                // src origin
-        width_, sprite.height(),  // src size
-        width_, height_,          // dest size
-        libyuv::kRotate0,
-        libyuv::FOURCC_ARGB);
-    if (res) {
-      has_errors_ = true;
-      break;
-    }
-    crop_y += height_;
-
-    ret = vpx_codec_encode(&codec, &image, frame, 1, 0, deadline_);
-    if (ret != VPX_CODEC_OK) {
-      has_errors_ = true;
-      break;
-    }
-
-    vpx_codec_iter_t iter = NULL;
-    const vpx_codec_cx_pkt_t* packet;
-    while (!has_errors_ && (packet = vpx_codec_get_cx_data(&codec, &iter))) {
-      if (packet->kind == VPX_CODEC_CX_FRAME_PKT)
-        WriteWebmBlock(packet);
-    }
-  }
-
-  return WriteWebmFooter();
-}
-
-bool WebmEncoder::WriteWebmHeader() {
-  output_ = base::OpenFile(output_path_, "wb");
-  if (!output_)
-    return false;
-
-  // Global header.
-  StartSubElement(EBML);
-  {
-    Ebml_SerializeUnsigned(&ebml_writer_, EBMLVersion, 1);
-    Ebml_SerializeUnsigned(&ebml_writer_, EBMLReadVersion, 1);
-    Ebml_SerializeUnsigned(&ebml_writer_, EBMLMaxIDLength, 4);
-    Ebml_SerializeUnsigned(&ebml_writer_, EBMLMaxSizeLength, 8);
-    Ebml_SerializeString(&ebml_writer_, DocType, "webm");
-    Ebml_SerializeUnsigned(&ebml_writer_, DocTypeVersion, 2);
-    Ebml_SerializeUnsigned(&ebml_writer_, DocTypeReadVersion, 2);
-  }
-  EndSubElement();  // EBML
-
-  // Single segment with a video track.
-  StartSubElement(Segment);
-  {
-    StartSubElement(Info);
-    {
-      // All timecodes in the segment will be expressed in milliseconds.
-      Ebml_SerializeUnsigned(&ebml_writer_, TimecodeScale, 1000000);
-      double duration = 1000. * frame_count_ * fps_.den / fps_.num;
-      Ebml_SerializeFloat(&ebml_writer_, Segment_Duration, duration);
-    }
-    EndSubElement();  // Info
-
-    StartSubElement(Tracks);
-    {
-      StartSubElement(TrackEntry);
-      {
-        Ebml_SerializeUnsigned(&ebml_writer_, TrackNumber, 1);
-        Ebml_SerializeUnsigned32(&ebml_writer_, TrackUID, 1);
-        Ebml_SerializeUnsigned(&ebml_writer_, TrackType, 1);  // Video
-        Ebml_SerializeString(&ebml_writer_, CodecID, "V_VP8");
-
-        StartSubElement(Video);
-        {
-          Ebml_SerializeUnsigned(&ebml_writer_, PixelWidth, width_);
-          Ebml_SerializeUnsigned(&ebml_writer_, PixelHeight, height_);
-          Ebml_SerializeUnsigned(&ebml_writer_, StereoMode, 0);  // Mono
-          float fps = static_cast<float>(fps_.num) / fps_.den;
-          Ebml_SerializeFloat(&ebml_writer_, FrameRate, fps);
-        }
-        EndSubElement();  // Video
-      }
-      EndSubElement();  // TrackEntry
-    }
-    EndSubElement();  // Tracks
-
-    StartSubElement(Cluster); {
-      Ebml_SerializeUnsigned(&ebml_writer_, Timecode, 0);
-    }  // Cluster left open.
-  }  // Segment left open.
-
-  // No check for |has_errors_| here because |false| is only returned when
-  // opening file fails.
-  return true;
-}
-
-void WebmEncoder::WriteWebmBlock(const vpx_codec_cx_pkt_t* packet) {
-  bool is_keyframe = packet->data.frame.flags & VPX_FRAME_IS_KEY;
-  int64_t pts_ms = 1000 * packet->data.frame.pts * fps_.den / fps_.num;
-
-  DVLOG(1) << "Video packet @" << pts_ms << " ms "
-           << packet->data.frame.sz << " bytes "
-           << (is_keyframe ? "K" : "");
-
-  Ebml_WriteID(&ebml_writer_, SimpleBlock);
-
-  uint32 block_length = (packet->data.frame.sz + 4) | 0x10000000;
-  EbmlSerializeHelper(&block_length, 4);
-
-  uint8 track_number = 1 | 0x80;
-  EbmlSerializeHelper(&track_number, 1);
-
-  EbmlSerializeHelper(&pts_ms, 2);
-
-  uint8 flags = 0;
-  if (is_keyframe)
-    flags |= 0x80;
-  if (packet->data.frame.flags & VPX_FRAME_IS_INVISIBLE)
-    flags |= 0x08;
-  EbmlSerializeHelper(&flags, 1);
-
-  EbmlWrite(packet->data.frame.buf, packet->data.frame.sz);
-}
-
-bool WebmEncoder::WriteWebmFooter() {
-  EndSubElement();  // Cluster
-  EndSubElement();  // Segment
-  DCHECK(ebml_sub_elements_.empty());
-  return base::CloseFile(output_) && !has_errors_;
-}
-
-void WebmEncoder::StartSubElement(unsigned long class_id) {
-  Ebml_WriteID(&ebml_writer_, class_id);
-  ebml_sub_elements_.push(ftell(output_));
-  static const uint64_t kUnknownLen = 0x01FFFFFFFFFFFFFFLLU;
-  EbmlSerializeHelper(&kUnknownLen, 8);
-}
-
-void WebmEncoder::EndSubElement() {
-  DCHECK(!ebml_sub_elements_.empty());
-
-  long int end_pos = ftell(output_);
-  long int start_pos = ebml_sub_elements_.top();
-  ebml_sub_elements_.pop();
-
-  uint64_t size = (end_pos - start_pos - 8) | 0x0100000000000000ULL;
-  // Seek to the beginning of the sub-element and patch in the calculated size.
-  if (fseek(output_, start_pos, SEEK_SET)) {
-    has_errors_ = true;
-    LOG(ERROR) << "Error writing to " << output_path_.value();
-  }
-  EbmlSerializeHelper(&size, 8);
-
-  // Restore write position.
-  if (fseek(output_, end_pos, SEEK_SET)) {
-    has_errors_ = true;
-    LOG(ERROR) << "Error writing to " << output_path_.value();
-  }
-}
-
-void WebmEncoder::EbmlWrite(const void* buffer,
-                            unsigned long len) {
-  if (fwrite(buffer, 1, len, output_) != len) {
-    has_errors_ = true;
-    LOG(ERROR) << "Error writing to " << output_path_.value();
-  }
-}
-
-template <class T>
-void WebmEncoder::EbmlSerializeHelper(const T* buffer, unsigned long len) {
-  for (int i = len - 1; i >= 0; i--) {
-    uint8 c = *buffer >> (i * CHAR_BIT);
-    EbmlWrite(&c, 1);
-  }
-}
-
-void WebmEncoder::EbmlSerialize(const void* buffer,
-                                int buffer_size,
-                                unsigned long len) {
-  switch (buffer_size) {
-    case 1:
-      return EbmlSerializeHelper(static_cast<const int8_t*>(buffer), len);
-    case 2:
-      return EbmlSerializeHelper(static_cast<const int16_t*>(buffer), len);
-    case 4:
-      return EbmlSerializeHelper(static_cast<const int32_t*>(buffer), len);
-    case 8:
-      return EbmlSerializeHelper(static_cast<const int64_t*>(buffer), len);
-    default:
-      NOTREACHED() << "Invalid EbmlSerialize length: " << len;
-  }
-}
-
-}  // namespace chromeos
-
-}  // namespace media