forked from mia/Aegisub
78 lines
3.1 KiB
C++
78 lines
3.1 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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#include "audio_renderer.h"
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#include <memory>
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#include <vector>
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class AudioColorScheme;
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class wxArrayString;
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/// Render a waveform display of PCM audio data
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class AudioWaveformRenderer final : public AudioRendererBitmapProvider {
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/// Colour tables used for rendering
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std::vector<AudioColorScheme> colors;
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/// Pre-allocated buffer for audio fetched from provider
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std::unique_ptr<char[]> audio_buffer;
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/// Whether to render max+avg or just max
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bool render_averages;
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void OnSetProvider() override { audio_buffer.reset(); }
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void OnSetMillisecondsPerPixel() override { audio_buffer.reset(); }
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public:
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/// @brief Constructor
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/// @param color_scheme_name Name of the color scheme to use
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AudioWaveformRenderer(std::string const& color_scheme_name);
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/// @brief Destructor
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~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 length information
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/// @param start First column of pixel data in display to render
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/// @param style Style to render audio in
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void Render(wxBitmap &bmp, int start, AudioRenderingStyle style) override;
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/// @brief Render blank area
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void RenderBlank(wxDC &dc, const wxRect &rect, AudioRenderingStyle style) override;
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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) override { }
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/// Get a list of waveform rendering modes
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static wxArrayString GetWaveformStyles();
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};
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