77 lines
2.9 KiB
C++
77 lines
2.9 KiB
C++
// Copyright (c) 2010, Niels Martin Hansen
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are met:
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//
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// * Redistributions of source code must retain the above copyright notice,
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// this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above copyright notice,
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// this list of conditions and the following disclaimer in the documentation
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// and/or other materials provided with the distribution.
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// * Neither the name of the Aegisub Group nor the names of its contributors
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// may be used to endorse or promote products derived from this software
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// without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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// POSSIBILITY OF SUCH DAMAGE.
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//
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// Aegisub Project http://www.aegisub.org/
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//
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// $Id$
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/// @file audio_renderer_waveform.h
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/// @see audio_renderer_waveform.cpp
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/// @ingroup audio_ui
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///
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/// Render a waveform display of PCM audio data
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#include <stdint.h>
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class AudioWaveformRenderer : public AudioRendererBitmapProvider {
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/// Colour table used for regular rendering
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AudioColorScheme colors_normal;
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/// Colour table used for rendering the audio selection
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AudioColorScheme colors_selected;
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/// Pre-allocated buffer for audio fetched from provider
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char *audio_buffer;
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protected:
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virtual void OnSetProvider();
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virtual void OnSetSamplesPerPixel();
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public:
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/// @brief Constructor
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AudioWaveformRenderer();
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/// @brief Destructor
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virtual ~AudioWaveformRenderer();
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/// @brief Render a range of audio waveform
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/// @param bmp [in,out] Bitmap to render into, also carries lenght information
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/// @param start First column of pixel data in display to render
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/// @param selected Whether to use the alternate colour scheme
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void Render(wxBitmap &bmp, int start, bool selected);
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/// @brief Render blank area
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void RenderBlank(wxDC &dc, const wxRect &rect, bool selected);
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/// @brief Cleans up the cache
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/// @param max_size Maximum size in bytes for the cache
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///
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/// Does nothing for waveform renderer, since it does not have a backend cache
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void AgeCache(size_t max_size) { }
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};
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