Initial code (pre-GitHub)

Contains:
- ffmpeg object wrappers
- base encoder class
- Apply ProRes encoder (prores_aw)
- OBS plugin structure

source/ffmpeg/tools.cpp

@@ -0,0 +1,126 @@
+// FFMPEG Video Encoder Integration for OBS Studio
+// Copyright (C) 2018 - 2018 Michael Fabian Dirks
+//
+// 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 2 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 "tools.hpp"
+#include <stdexcept>
+
+extern "C" {
+#include <libavutil/error.h>
+#include <libavutil/pixdesc.h>
+}
+
+const char* ffmpeg::tools::get_pixel_format_name(AVPixelFormat v)
+{
+	return av_get_pix_fmt_name(v);
+}
+
+const char* ffmpeg::tools::get_color_space_name(AVColorSpace v)
+{
+	switch (v) {
+	case AVCOL_SPC_RGB:
+		return "RGB";
+	case AVCOL_SPC_BT709:
+		return "BT.709";
+	case AVCOL_SPC_FCC:
+		return "FCC Title 47 CoFR 73.682 (a)(20)";
+	case AVCOL_SPC_BT470BG:
+		return "BT.601 625";
+	case AVCOL_SPC_SMPTE170M:
+	case AVCOL_SPC_SMPTE240M:
+		return "BT.601 525";
+	case AVCOL_SPC_YCGCO:
+		return "ITU-T SG16";
+	case AVCOL_SPC_BT2020_NCL:
+		return "BT.2020 NCL";
+	case AVCOL_SPC_BT2020_CL:
+		return "BT.2020 CL";
+	case AVCOL_SPC_SMPTE2085:
+		return "SMPTE 2085";
+	case AVCOL_SPC_CHROMA_DERIVED_NCL:
+		return "Chroma NCL";
+	case AVCOL_SPC_CHROMA_DERIVED_CL:
+		return "Chroma CL";
+	case AVCOL_SPC_ICTCP:
+		return "BT.2100";
+	case AVCOL_SPC_NB:
+		return "Not Part of ABI";
+	}
+	return "Unknown";
+}
+
+const char* ffmpeg::tools::get_error_description(int error)
+{
+	switch (error) {
+	case AVERROR(EPERM):
+		return "Permission Denied";
+	case AVERROR(ENOMEM):
+		return "Out Of Memory";
+	case AVERROR(EINVAL):
+		return "Invalid Value for Parameter";
+	}
+	return "Not Translated Yet";
+}
+
+AVPixelFormat ffmpeg::tools::obs_videoformat_to_avpixelformat(video_format v)
+{
+	switch (v) {
+		// 32-Bits
+	case VIDEO_FORMAT_BGRX:
+		return AV_PIX_FMT_BGRA;
+	case VIDEO_FORMAT_BGRA:
+		return AV_PIX_FMT_BGRA;
+	case VIDEO_FORMAT_RGBA:
+		return AV_PIX_FMT_RGBA;
+	case VIDEO_FORMAT_I444:
+		return AV_PIX_FMT_YUV444P;
+	case VIDEO_FORMAT_YUY2:
+		return AV_PIX_FMT_YUYV422;
+	case VIDEO_FORMAT_YVYU:
+		return AV_PIX_FMT_YVYU422;
+	case VIDEO_FORMAT_UYVY:
+		return AV_PIX_FMT_UYVY422;
+	case VIDEO_FORMAT_I420:
+		return AV_PIX_FMT_YUV420P;
+	case VIDEO_FORMAT_NV12:
+		return AV_PIX_FMT_NV12;
+	}
+	throw std::invalid_argument("unknown format");
+}
+
+AVColorSpace ffmpeg::tools::obs_videocolorspace_to_avcolorspace(video_colorspace v)
+{
+	switch (v) {
+	case VIDEO_CS_DEFAULT:
+	case VIDEO_CS_709:
+		return AVCOL_SPC_BT709;
+	case VIDEO_CS_601:
+		return AVCOL_SPC_SMPTE170M;
+	}
+	throw std::invalid_argument("unknown color space");
+}
+
+AVColorRange ffmpeg::tools::obs_videorangetype_to_avcolorrange(video_range_type v)
+{
+	switch (v) {
+	case VIDEO_RANGE_DEFAULT:
+	case VIDEO_RANGE_FULL:
+		return AVCOL_RANGE_JPEG;
+	case VIDEO_RANGE_PARTIAL:
+		return AVCOL_RANGE_MPEG;
+	}
+	throw std::invalid_argument("unknown range");
+}