Import aom library

This is the reference implementation for the Alliance for Open Media's av1 video code.

The commit used was 4d668d7feb1f8abd809d1bca0418570a7f142a36.

1 files changed, 124 insertions, 0 deletions

diff --git a/third_party/aom/test/decode_test_driver.cc b/third_party/aom/test/decode_test_driver.cc
new file mode 100644
index 000000000..35c28eafd
--- /dev/null
+++ b/third_party/aom/test/decode_test_driver.cc
@@ -0,0 +1,124 @@
+/*
+ * Copyright (c) 2016, Alliance for Open Media. All rights reserved
+ *
+ * This source code is subject to the terms of the BSD 2 Clause License and
+ * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
+ * was not distributed with this source code in the LICENSE file, you can
+ * obtain it at www.aomedia.org/license/software. If the Alliance for Open
+ * Media Patent License 1.0 was not distributed with this source code in the
+ * PATENTS file, you can obtain it at www.aomedia.org/license/patent.
+*/
+
+#include "third_party/googletest/src/googletest/include/gtest/gtest.h"
+
+#include "test/codec_factory.h"
+#include "test/decode_test_driver.h"
+#include "test/register_state_check.h"
+#include "test/video_source.h"
+
+namespace libaom_test {
+
+const char kVP8Name[] = "WebM Project VP8";
+const char kAV1Name[] = "AOMedia Project AV1 Decoder";
+
+aom_codec_err_t Decoder::PeekStream(const uint8_t *cxdata, size_t size,
+                                    aom_codec_stream_info_t *stream_info) {
+  return aom_codec_peek_stream_info(
+      CodecInterface(), cxdata, static_cast<unsigned int>(size), stream_info);
+}
+
+aom_codec_err_t Decoder::DecodeFrame(const uint8_t *cxdata, size_t size) {
+  return DecodeFrame(cxdata, size, NULL);
+}
+
+aom_codec_err_t Decoder::DecodeFrame(const uint8_t *cxdata, size_t size,
+                                     void *user_priv) {
+  aom_codec_err_t res_dec;
+  InitOnce();
+  API_REGISTER_STATE_CHECK(
+      res_dec = aom_codec_decode(
+          &decoder_, cxdata, static_cast<unsigned int>(size), user_priv, 0));
+  return res_dec;
+}
+
+bool Decoder::IsVP8() const {
+  const char *codec_name = GetDecoderName();
+  return strncmp(kVP8Name, codec_name, sizeof(kVP8Name) - 1) == 0;
+}
+
+bool Decoder::IsAV1() const {
+  const char *codec_name = GetDecoderName();
+  return strncmp(kAV1Name, codec_name, sizeof(kAV1Name) - 1) == 0;
+}
+
+void DecoderTest::HandlePeekResult(Decoder *const decoder,
+                                   CompressedVideoSource *video,
+                                   const aom_codec_err_t res_peek) {
+  const bool is_vp8 = decoder->IsVP8();
+  if (is_vp8) {
+    /* Vp8's implementation of PeekStream returns an error if the frame you
+     * pass it is not a keyframe, so we only expect AOM_CODEC_OK on the first
+     * frame, which must be a keyframe. */
+    if (video->frame_number() == 0)
+      ASSERT_EQ(AOM_CODEC_OK, res_peek) << "Peek return failed: "
+                                        << aom_codec_err_to_string(res_peek);
+  } else {
+    /* The Av1 implementation of PeekStream returns an error only if the
+     * data passed to it isn't a valid Av1 chunk. */
+    ASSERT_EQ(AOM_CODEC_OK, res_peek) << "Peek return failed: "
+                                      << aom_codec_err_to_string(res_peek);
+  }
+}
+
+void DecoderTest::RunLoop(CompressedVideoSource *video,
+                          const aom_codec_dec_cfg_t &dec_cfg) {
+  Decoder *const decoder = codec_->CreateDecoder(dec_cfg, flags_);
+  ASSERT_TRUE(decoder != NULL);
+  bool end_of_file = false;
+
+  // Decode frames.
+  for (video->Begin(); !::testing::Test::HasFailure() && !end_of_file;
+       video->Next()) {
+    PreDecodeFrameHook(*video, decoder);
+
+    aom_codec_stream_info_t stream_info;
+    stream_info.sz = sizeof(stream_info);
+
+    if (video->cxdata() != NULL) {
+      const aom_codec_err_t res_peek = decoder->PeekStream(
+          video->cxdata(), video->frame_size(), &stream_info);
+      HandlePeekResult(decoder, video, res_peek);
+      ASSERT_FALSE(::testing::Test::HasFailure());
+
+      aom_codec_err_t res_dec =
+          decoder->DecodeFrame(video->cxdata(), video->frame_size());
+      if (!HandleDecodeResult(res_dec, decoder)) break;
+    } else {
+      // Signal end of the file to the decoder.
+      const aom_codec_err_t res_dec = decoder->DecodeFrame(NULL, 0);
+      ASSERT_EQ(AOM_CODEC_OK, res_dec) << decoder->DecodeError();
+      end_of_file = true;
+    }
+
+    DxDataIterator dec_iter = decoder->GetDxData();
+    const aom_image_t *img = NULL;
+
+    // Get decompressed data
+    while ((img = dec_iter.Next()))
+      DecompressedFrameHook(*img, video->frame_number());
+  }
+  delete decoder;
+}
+
+void DecoderTest::RunLoop(CompressedVideoSource *video) {
+  aom_codec_dec_cfg_t dec_cfg = aom_codec_dec_cfg_t();
+  RunLoop(video, dec_cfg);
+}
+
+void DecoderTest::set_cfg(const aom_codec_dec_cfg_t &dec_cfg) {
+  memcpy(&cfg_, &dec_cfg, sizeof(cfg_));
+}
+
+void DecoderTest::set_flags(const aom_codec_flags_t flags) { flags_ = flags; }
+
+}  // namespace libaom_test