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/*
* Copyright (c) 2012 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 "testing/gtest/include/gtest/gtest.h"
#include "webrtc/base/scoped_ptr.h"
#include "webrtc/common_video/interface/video_image.h"
#include "webrtc/common_video/libyuv/include/webrtc_libyuv.h"
#include "webrtc/modules/video_coding/codecs/vp8/include/vp8.h"
#include "webrtc/system_wrappers/include/tick_util.h"
#include "webrtc/test/testsupport/fileutils.h"
#include "webrtc/test/testsupport/metrics/video_metrics.h"
#include "webrtc/tools/simple_command_line_parser.h"
#include "webrtc/video_frame.h"
class Vp8SequenceCoderEncodeCallback : public webrtc::EncodedImageCallback {
public:
explicit Vp8SequenceCoderEncodeCallback(FILE* encoded_file)
: encoded_file_(encoded_file),
encoded_bytes_(0) {}
~Vp8SequenceCoderEncodeCallback();
int Encoded(const webrtc::EncodedImage& encoded_image,
const webrtc::CodecSpecificInfo* codecSpecificInfo,
const webrtc::RTPFragmentationHeader*);
// Returns the encoded image.
webrtc::EncodedImage encoded_image() { return encoded_image_; }
size_t encoded_bytes() { return encoded_bytes_; }
private:
webrtc::EncodedImage encoded_image_;
FILE* encoded_file_;
size_t encoded_bytes_;
};
Vp8SequenceCoderEncodeCallback::~Vp8SequenceCoderEncodeCallback() {
delete [] encoded_image_._buffer;
encoded_image_._buffer = NULL;
}
int Vp8SequenceCoderEncodeCallback::Encoded(
const webrtc::EncodedImage& encoded_image,
const webrtc::CodecSpecificInfo* codecSpecificInfo,
const webrtc::RTPFragmentationHeader* fragmentation) {
if (encoded_image_._size < encoded_image._size) {
delete [] encoded_image_._buffer;
encoded_image_._buffer = NULL;
encoded_image_._buffer = new uint8_t[encoded_image._size];
encoded_image_._size = encoded_image._size;
}
memcpy(encoded_image_._buffer, encoded_image._buffer, encoded_image._size);
encoded_image_._length = encoded_image._length;
if (encoded_file_ != NULL) {
if (fwrite(encoded_image._buffer, 1, encoded_image._length,
encoded_file_) != encoded_image._length) {
return -1;
}
}
encoded_bytes_ += encoded_image_._length;
return 0;
}
// TODO(mikhal): Add support for varying the frame size.
class Vp8SequenceCoderDecodeCallback : public webrtc::DecodedImageCallback {
public:
explicit Vp8SequenceCoderDecodeCallback(FILE* decoded_file)
: decoded_file_(decoded_file) {}
int Decoded(webrtc::VideoFrame& frame);
bool DecodeComplete();
private:
FILE* decoded_file_;
};
int Vp8SequenceCoderDecodeCallback::Decoded(webrtc::VideoFrame& image) {
EXPECT_EQ(0, webrtc::PrintVideoFrame(image, decoded_file_));
return 0;
}
int SequenceCoder(webrtc::test::CommandLineParser& parser) {
int width = strtol((parser.GetFlag("w")).c_str(), NULL, 10);
int height = strtol((parser.GetFlag("h")).c_str(), NULL, 10);
int framerate = strtol((parser.GetFlag("f")).c_str(), NULL, 10);
if (width <= 0 || height <= 0 || framerate <= 0) {
fprintf(stderr, "Error: Resolution cannot be <= 0!\n");
return -1;
}
int target_bitrate = strtol((parser.GetFlag("b")).c_str(), NULL, 10);
if (target_bitrate <= 0) {
fprintf(stderr, "Error: Bit-rate cannot be <= 0!\n");
return -1;
}
// SetUp
// Open input file.
std::string encoded_file_name = parser.GetFlag("encoded_file");
FILE* encoded_file = fopen(encoded_file_name.c_str(), "wb");
if (encoded_file == NULL) {
fprintf(stderr, "Error: Cannot open encoded file\n");
return -1;
}
std::string input_file_name = parser.GetFlag("input_file");
FILE* input_file = fopen(input_file_name.c_str(), "rb");
if (input_file == NULL) {
fprintf(stderr, "Error: Cannot open input file\n");
return -1;
}
// Open output file.
std::string output_file_name = parser.GetFlag("output_file");
FILE* output_file = fopen(output_file_name.c_str(), "wb");
if (output_file == NULL) {
fprintf(stderr, "Error: Cannot open output file\n");
return -1;
}
// Get range of frames: will encode num_frames following start_frame).
int start_frame = strtol((parser.GetFlag("start_frame")).c_str(), NULL, 10);
int num_frames = strtol((parser.GetFlag("num_frames")).c_str(), NULL, 10);
// Codec SetUp.
webrtc::VideoCodec inst;
memset(&inst, 0, sizeof(inst));
webrtc::VP8Encoder* encoder = webrtc::VP8Encoder::Create();
webrtc::VP8Decoder* decoder = webrtc::VP8Decoder::Create();
inst.codecType = webrtc::kVideoCodecVP8;
inst.codecSpecific.VP8.feedbackModeOn = false;
inst.codecSpecific.VP8.denoisingOn = true;
inst.maxFramerate = framerate;
inst.startBitrate = target_bitrate;
inst.maxBitrate = 8000;
inst.width = width;
inst.height = height;
if (encoder->InitEncode(&inst, 1, 1440) < 0) {
fprintf(stderr, "Error: Cannot initialize vp8 encoder\n");
return -1;
}
EXPECT_EQ(0, decoder->InitDecode(&inst, 1));
webrtc::VideoFrame input_frame;
size_t length = webrtc::CalcBufferSize(webrtc::kI420, width, height);
rtc::scoped_ptr<uint8_t[]> frame_buffer(new uint8_t[length]);
int half_width = (width + 1) / 2;
// Set and register callbacks.
Vp8SequenceCoderEncodeCallback encoder_callback(encoded_file);
encoder->RegisterEncodeCompleteCallback(&encoder_callback);
Vp8SequenceCoderDecodeCallback decoder_callback(output_file);
decoder->RegisterDecodeCompleteCallback(&decoder_callback);
// Read->Encode->Decode sequence.
// num_frames = -1 implies unlimited encoding (entire sequence).
int64_t starttime = webrtc::TickTime::MillisecondTimestamp();
int frame_cnt = 1;
int frames_processed = 0;
input_frame.CreateEmptyFrame(width, height, width, half_width, half_width);
while (!feof(input_file) &&
(num_frames == -1 || frames_processed < num_frames)) {
if (fread(frame_buffer.get(), 1, length, input_file) != length)
continue;
if (frame_cnt >= start_frame) {
webrtc::ConvertToI420(webrtc::kI420, frame_buffer.get(), 0, 0, width,
height, 0, webrtc::kVideoRotation_0, &input_frame);
encoder->Encode(input_frame, NULL, NULL);
decoder->Decode(encoder_callback.encoded_image(), false, NULL);
++frames_processed;
}
++frame_cnt;
}
printf("\nProcessed %d frames\n", frames_processed);
int64_t endtime = webrtc::TickTime::MillisecondTimestamp();
int64_t totalExecutionTime = endtime - starttime;
printf("Total execution time: %.2lf ms\n",
static_cast<double>(totalExecutionTime));
double actual_bit_rate =
8.0 * encoder_callback.encoded_bytes() / (frame_cnt / inst.maxFramerate);
printf("Actual bitrate: %f kbps\n", actual_bit_rate / 1000);
webrtc::test::QualityMetricsResult psnr_result, ssim_result;
EXPECT_EQ(0, webrtc::test::I420MetricsFromFiles(
input_file_name.c_str(), output_file_name.c_str(),
inst.width, inst.height,
&psnr_result, &ssim_result));
printf("PSNR avg: %f[dB], min: %f[dB]\nSSIM avg: %f, min: %f\n",
psnr_result.average, psnr_result.min,
ssim_result.average, ssim_result.min);
return frame_cnt;
}
int main(int argc, char** argv) {
std::string program_name = argv[0];
std::string usage = "Encode and decodes a video sequence, and writes"
"results to a file.\n"
"Example usage:\n" + program_name + " functionality"
" --w=352 --h=288 --input_file=input.yuv --output_file=output.yuv "
" Command line flags:\n"
" - width(int): The width of the input file. Default: 352\n"
" - height(int): The height of the input file. Default: 288\n"
" - input_file(string): The YUV file to encode."
" Default: foreman.yuv\n"
" - encoded_file(string): The vp8 encoded file (encoder output)."
" Default: vp8_encoded.vp8\n"
" - output_file(string): The yuv decoded file (decoder output)."
" Default: vp8_decoded.yuv\n."
" - start_frame - frame number in which encoding will begin. Default: 0"
" - num_frames - Number of frames to be processed. "
" Default: -1 (entire sequence).";
webrtc::test::CommandLineParser parser;
// Init the parser and set the usage message.
parser.Init(argc, argv);
parser.SetUsageMessage(usage);
// Reset flags.
parser.SetFlag("w", "352");
parser.SetFlag("h", "288");
parser.SetFlag("f", "30");
parser.SetFlag("b", "500");
parser.SetFlag("start_frame", "0");
parser.SetFlag("num_frames", "-1");
parser.SetFlag("output_file", webrtc::test::OutputPath() + "vp8_decoded.yuv");
parser.SetFlag("encoded_file",
webrtc::test::OutputPath() + "vp8_encoded.vp8");
parser.SetFlag("input_file", webrtc::test::ResourcePath("foreman_cif",
"yuv"));
parser.SetFlag("help", "false");
parser.ProcessFlags();
if (parser.GetFlag("help") == "true") {
parser.PrintUsageMessage();
exit(EXIT_SUCCESS);
}
parser.PrintEnteredFlags();
return SequenceCoder(parser);
}
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