Separate Call API/build files from video_engine/.

BUG=2535
R=andrew@webrtc.org, mflodman@webrtc.org, niklas.enbom@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/2659004

git-svn-id: http://webrtc.googlecode.com/svn/trunk/webrtc@5042 4adac7df-926f-26a2-2b94-8c16560cd09d

1 files changed, 140 insertions, 0 deletions

diff --git a/test/fake_encoder.cc b/test/fake_encoder.cc
new file mode 100644
index 00000000..454be165
--- /dev/null
+++ b/test/fake_encoder.cc
@@ -0,0 +1,140 @@
+/*
+ *  Copyright (c) 2013 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#include "webrtc/test/fake_encoder.h"
+
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace webrtc {
+namespace test {
+
+FakeEncoder::FakeEncoder(Clock* clock)
+    : clock_(clock),
+      callback_(NULL),
+      target_bitrate_kbps_(0),
+      last_encode_time_ms_(0) {
+  memset(encoded_buffer_, 0, sizeof(encoded_buffer_));
+}
+
+FakeEncoder::~FakeEncoder() {}
+
+void FakeEncoder::SetCodecSettings(VideoCodec* codec,
+                                         size_t num_streams) {
+  assert(num_streams > 0);
+  assert(num_streams <= kMaxSimulcastStreams);
+
+  static const SimulcastStream stream_settings[] = {
+      {320, 180, 0, 150, 150, 50, codec->qpMax},
+      {640, 360, 0, 500, 500, 150, codec->qpMax},
+      {1280, 720, 0, 1200, 1200, 600, codec->qpMax}};
+  // Add more streams to the settings above with reasonable values if required.
+  assert(num_streams <= sizeof(stream_settings) / sizeof(stream_settings[0]));
+
+  codec->numberOfSimulcastStreams = static_cast<unsigned char>(num_streams);
+
+  unsigned int sum_of_max_bitrates = 0;
+  for (size_t i = 0; i < num_streams; ++i) {
+    codec->simulcastStream[i] = stream_settings[i];
+    sum_of_max_bitrates += stream_settings[i].maxBitrate;
+  }
+
+  size_t last_stream = num_streams - 1;
+  codec->width = stream_settings[last_stream].width;
+  codec->height = stream_settings[last_stream].height;
+  // Start with the average for the middle stream's max/min settings.
+  codec->startBitrate = (stream_settings[last_stream / 2].maxBitrate +
+                         stream_settings[last_stream / 2].minBitrate) /
+                        2;
+  codec->minBitrate = stream_settings[0].minBitrate;
+  codec->maxBitrate = sum_of_max_bitrates;
+
+  codec->codecType = kVideoCodecGeneric;
+  strcpy(codec->plName, "FAKE");
+  codec->plType = 125;
+}
+
+int32_t FakeEncoder::InitEncode(const VideoCodec* config,
+                                int32_t number_of_cores,
+                                uint32_t max_payload_size) {
+  config_ = *config;
+  target_bitrate_kbps_ = config_.startBitrate;
+  return 0;
+}
+
+int32_t FakeEncoder::Encode(
+    const I420VideoFrame& input_image,
+    const CodecSpecificInfo* codec_specific_info,
+    const std::vector<VideoFrameType>* frame_types) {
+  assert(config_.maxFramerate > 0);
+  int delta_since_last_encode = 1000 / config_.maxFramerate;
+  int64_t time_now_ms = clock_->TimeInMilliseconds();
+  if (last_encode_time_ms_ > 0) {
+    // For all frames but the first we can estimate the display time by looking
+    // at the display time of the previous frame.
+    delta_since_last_encode = time_now_ms - last_encode_time_ms_;
+  }
+
+  int bits_available = target_bitrate_kbps_ * delta_since_last_encode;
+  int min_bits =
+      config_.simulcastStream[0].minBitrate * delta_since_last_encode;
+  if (bits_available < min_bits)
+    bits_available = min_bits;
+  last_encode_time_ms_ = time_now_ms;
+
+  for (int i = 0; i < config_.numberOfSimulcastStreams; ++i) {
+    CodecSpecificInfo specifics;
+    memset(&specifics, 0, sizeof(specifics));
+    specifics.codecType = kVideoCodecGeneric;
+    specifics.codecSpecific.generic.simulcast_idx = i;
+    int min_stream_bits = config_.simulcastStream[i].minBitrate *
+        delta_since_last_encode;
+    int max_stream_bits = config_.simulcastStream[i].maxBitrate *
+        delta_since_last_encode;
+    int stream_bits = (bits_available > max_stream_bits) ? max_stream_bits :
+        bits_available;
+    int stream_bytes = (stream_bits + 7) / 8;
+    if (static_cast<size_t>(stream_bytes) > sizeof(encoded_buffer_))
+      stream_bytes = sizeof(encoded_buffer_);
+
+    EncodedImage encoded(
+        encoded_buffer_, stream_bytes, sizeof(encoded_buffer_));
+    encoded._timeStamp = input_image.timestamp();
+    encoded.capture_time_ms_ = input_image.render_time_ms();
+    encoded._frameType = (*frame_types)[i];
+    if (min_stream_bits > bits_available) {
+      encoded._length = 0;
+      encoded._frameType = kSkipFrame;
+    }
+    if (callback_->Encoded(encoded, &specifics, NULL) != 0)
+      return -1;
+
+    bits_available -= encoded._length * 8;
+  }
+  return 0;
+}
+
+int32_t FakeEncoder::RegisterEncodeCompleteCallback(
+    EncodedImageCallback* callback) {
+  callback_ = callback;
+  return 0;
+}
+
+int32_t FakeEncoder::Release() { return 0; }
+
+int32_t FakeEncoder::SetChannelParameters(uint32_t packet_loss, int rtt) {
+  return 0;
+}
+
+int32_t FakeEncoder::SetRates(uint32_t new_target_bitrate, uint32_t framerate) {
+  target_bitrate_kbps_ = new_target_bitrate;
+  return 0;
+}
+}  // namespace test
+}  // namespace webrtc