62 lines
1.9 KiB
C
62 lines
1.9 KiB
C
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// Copyright (c) 2013 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef MEDIA_WEBM_WEBM_VIDEO_CLIENT_H_
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#define MEDIA_WEBM_WEBM_VIDEO_CLIENT_H_
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#include <string>
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#include <vector>
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#include "media/base/media_log.h"
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#include "media/webm/webm_parser.h"
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namespace media {
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class VideoDecoderConfig;
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// Helper class used to parse a Video element inside a TrackEntry element.
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class WebMVideoClient : public WebMParserClient {
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public:
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explicit WebMVideoClient(const LogCB& log_cb);
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virtual ~WebMVideoClient();
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// Reset this object's state so it can process a new video track element.
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void Reset();
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// Initialize |config| with the data in |codec_id|, |codec_private|,
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// |is_encrypted| and the fields parsed from the last video track element this
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// object was used to parse.
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// Returns true if |config| was successfully initialized.
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// Returns false if there was unexpected values in the provided parameters or
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// video track element fields. The contents of |config| are undefined in this
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// case and should not be relied upon.
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bool InitializeConfig(const std::string& codec_id,
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const std::vector<uint8>& codec_private,
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bool is_encrypted,
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VideoDecoderConfig* config);
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private:
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// WebMParserClient implementation.
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virtual bool OnUInt(int id, int64 val) OVERRIDE;
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virtual bool OnBinary(int id, const uint8* data, int size) OVERRIDE;
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virtual bool OnFloat(int id, double val) OVERRIDE;
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LogCB log_cb_;
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int64 pixel_width_;
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int64 pixel_height_;
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int64 crop_bottom_;
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int64 crop_top_;
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int64 crop_left_;
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int64 crop_right_;
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int64 display_width_;
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int64 display_height_;
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int64 display_unit_;
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int64 alpha_mode_;
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DISALLOW_COPY_AND_ASSIGN(WebMVideoClient);
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};
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} // namespace media
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#endif // MEDIA_WEBM_WEBM_VIDEO_CLIENT_H_
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