Adds two tests for verifying padding and ramp-up behavior.
BUG=1837
R=pbos@webrtc.org
Review URL: https://webrtc-codereview.appspot.com/2073004
git-svn-id: http://webrtc.googlecode.com/svn/trunk@4591 4adac7df-926f-26a2-2b94-8c16560cd09d
diff --git a/webrtc/video_engine/test/common/fake_encoder.cc b/webrtc/video_engine/test/common/fake_encoder.cc
new file mode 100644
index 0000000..d9674b3
--- /dev/null
+++ b/webrtc/video_engine/test/common/fake_encoder.cc
@@ -0,0 +1,98 @@
+/*
+ * 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/video_engine/test/common/fake_encoder.h"
+
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace webrtc {
+
+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() {}
+
+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;
+ last_encode_time_ms_ = time_now_ms;
+
+ for (int i = 0; i < config_.numberOfSimulcastStreams; ++i) {
+ CodecSpecificInfo specifics;
+ memset(&specifics, 0, sizeof(specifics));
+ specifics.codecType = kVideoCodecVP8;
+ specifics.codecSpecific.VP8.simulcastIdx = 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;
+ EXPECT_LT(stream_bytes, kMaxFrameSizeBytes);
+ if (stream_bytes > kMaxFrameSizeBytes)
+ return -1;
+
+ EncodedImage encoded(encoded_buffer_, stream_bytes, kMaxFrameSizeBytes);
+ encoded._timeStamp = input_image.timestamp();
+ encoded.capture_time_ms_ = input_image.render_time_ms();
+ 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 webrtc
