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115 lines
2.9 KiB
115 lines
2.9 KiB
2 years ago
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/*
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libde265 example application "enc265".
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MIT License
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Copyright (c) 2013-2014 struktur AG, Dirk Farin <farin@struktur.de>
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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*/
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#include "image-io-png.h"
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#include <assert.h>
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#if HAVE_VIDEOGFX
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#include <libvideogfx.hh>
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using namespace videogfx;
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ImageSource_PNG::ImageSource_PNG()
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{
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mFilenameTemplate = NULL;
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mNextImageNumber = 1;
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mReachedEndOfStream = false;
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mWidth=mHeight=0;
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}
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ImageSource_PNG::~ImageSource_PNG()
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{
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}
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bool ImageSource_PNG::set_input_file(const char* filename)
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{
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mFilenameTemplate = filename;
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return true;
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}
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de265_image* ImageSource_PNG::get_image(bool block)
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{
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if (mReachedEndOfStream) return NULL;
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// --- construct image filename ---
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char filename[1000];
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sprintf(filename,mFilenameTemplate,mNextImageNumber);
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mNextImageNumber++;
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// --- load image ---
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Image<Pixel> input;
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bool success = videogfx::ReadImage_PNG(input, filename);
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if (!success) {
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mReachedEndOfStream = true;
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return NULL;
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}
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mWidth = input.AskWidth();
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mHeight= input.AskHeight();
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de265_image* img = new de265_image;
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img->alloc_image(mWidth,mHeight,de265_chroma_444, NULL, false,
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NULL, /*NULL,*/ 0, NULL, false);
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assert(img); // TODO: error handling
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uint8_t* p;
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int stride;
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for (int c=0;c<3;c++) {
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int h265channel;
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switch (c) {
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case 0: h265channel=2; break; // R
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case 1: h265channel=0; break; // G
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case 2: h265channel=1; break; // B
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}
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p = img->get_image_plane(h265channel);
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stride = img->get_image_stride(h265channel);
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for (int y=0;y<mHeight;y++) {
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memcpy(p, input.AskFrame((BitmapChannel(c)))[y], mWidth);
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p += stride;
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}
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}
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return img;
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}
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void ImageSource_PNG::skip_frames(int n)
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{
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mNextImageNumber += n;
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}
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#endif
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