| /* |
| * Copyright (C) 2004-2021 Savoir-faire Linux Inc. |
| * |
| * Author: Denys VIDAL <denys.vidal@savoirfairelinux.com> |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 3 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
| */ |
| |
| #include "filter_transpose.h" |
| #include "logger.h" |
| |
| namespace jami { |
| namespace video { |
| |
| std::unique_ptr<MediaFilter> |
| getTransposeFilter( |
| int rotation, std::string inputName, int width, int height, int format, bool rescale) |
| { |
| JAMI_WARN("Rotation set to %d", rotation); |
| if (rotation == 0) { |
| return {}; |
| } |
| |
| std::stringstream ss; |
| ss << "[" << inputName << "] "; |
| |
| switch (rotation) { |
| case 90: |
| case -270: |
| ss << "transpose=2"; |
| if (rescale) { |
| if (width > height) |
| ss << ", scale=w=-1:h=" << height << ", pad=" << width << ":" << height |
| << ":(ow-iw)/2"; |
| else |
| ss << ", scale=w=" << width << ":h=-1" |
| << ", pad=" << width << ":" << height << ":0:(oh-ih)/2"; |
| } |
| break; |
| case 180: |
| case -180: |
| ss << "transpose=1, transpose=1"; |
| break; |
| case 270: |
| case -90: |
| ss << "transpose=1"; |
| if (rescale) { |
| if (width > height) |
| ss << ", scale=w=-1:h=" << height << ", pad=" << width << ":" << height |
| << ":(ow-iw)/2"; |
| else |
| ss << ", scale=w=" << width << ":h=-1" |
| << ", pad=" << width << ":" << height << ":0:(oh-ih)/2"; |
| } |
| break; |
| default: |
| return {}; |
| } |
| |
| constexpr auto one = rational<int>(1); |
| std::vector<MediaStream> msv; |
| msv.emplace_back(inputName, format, one, width, height, 0, one); |
| |
| std::unique_ptr<MediaFilter> filter(new MediaFilter); |
| auto ret = filter->initialize(ss.str(), msv); |
| if (ret < 0) { |
| JAMI_ERR() << "filter init fail"; |
| return {}; |
| } |
| return filter; |
| } |
| |
| } // namespace video |
| } // namespace jami |