diff options
Diffstat (limited to 'libavcodec/v4l2_fmt.c')
| -rw-r--r-- | libavcodec/v4l2_fmt.c | 141 |
1 files changed, 141 insertions, 0 deletions
diff --git a/libavcodec/v4l2_fmt.c b/libavcodec/v4l2_fmt.c new file mode 100644 index 0000000..6df47e3 --- /dev/null +++ b/libavcodec/v4l2_fmt.c @@ -0,0 +1,141 @@ +/* + * V4L2 format helper functions + * + * Copyright (C) 2017 Alexis Ballier <aballier@gentoo.org> + * Copyright (C) 2017 Jorge Ramirez <jorge.ramirez-ortiz@linaro.org> + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg 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 + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <linux/videodev2.h> +#include <search.h> +#include "v4l2_fmt.h" + +#define V4L2_FMT(x) V4L2_PIX_FMT_##x +#define AV_CODEC(x) AV_CODEC_ID_##x +#define AV_FMT(x) AV_PIX_FMT_##x + +static const struct fmt_conversion { + enum AVPixelFormat avfmt; + enum AVCodecID avcodec; + uint32_t v4l2_fmt; +} fmt_map[] = { + { AV_FMT(RGB555LE), AV_CODEC(RAWVIDEO), V4L2_FMT(RGB555) }, + { AV_FMT(RGB555BE), AV_CODEC(RAWVIDEO), V4L2_FMT(RGB555X) }, + { AV_FMT(RGB565LE), AV_CODEC(RAWVIDEO), V4L2_FMT(RGB565) }, + { AV_FMT(RGB565BE), AV_CODEC(RAWVIDEO), V4L2_FMT(RGB565X) }, + { AV_FMT(BGR24), AV_CODEC(RAWVIDEO), V4L2_FMT(BGR24) }, + { AV_FMT(RGB24), AV_CODEC(RAWVIDEO), V4L2_FMT(RGB24) }, + { AV_FMT(BGR0), AV_CODEC(RAWVIDEO), V4L2_FMT(BGR32) }, + { AV_FMT(0RGB), AV_CODEC(RAWVIDEO), V4L2_FMT(RGB32) }, + { AV_FMT(GRAY8), AV_CODEC(RAWVIDEO), V4L2_FMT(GREY) }, + { AV_FMT(YUV420P), AV_CODEC(RAWVIDEO), V4L2_FMT(YUV420) }, + { AV_FMT(YUYV422), AV_CODEC(RAWVIDEO), V4L2_FMT(YUYV) }, + { AV_FMT(UYVY422), AV_CODEC(RAWVIDEO), V4L2_FMT(UYVY) }, + { AV_FMT(YUV422P), AV_CODEC(RAWVIDEO), V4L2_FMT(YUV422P) }, + { AV_FMT(YUV411P), AV_CODEC(RAWVIDEO), V4L2_FMT(YUV411P) }, + { AV_FMT(YUV410P), AV_CODEC(RAWVIDEO), V4L2_FMT(YUV410) }, + { AV_FMT(YUV410P), AV_CODEC(RAWVIDEO), V4L2_FMT(YVU410) }, + { AV_FMT(NV12), AV_CODEC(RAWVIDEO), V4L2_FMT(NV12) }, + { AV_FMT(NONE), AV_CODEC(MJPEG), V4L2_FMT(MJPEG) }, + { AV_FMT(NONE), AV_CODEC(MJPEG), V4L2_FMT(JPEG) }, +#ifdef V4L2_PIX_FMT_SRGGB8 + { AV_FMT(BAYER_BGGR8), AV_CODEC(RAWVIDEO), V4L2_FMT(SBGGR8) }, + { AV_FMT(BAYER_GBRG8), AV_CODEC(RAWVIDEO), V4L2_FMT(SGBRG8) }, + { AV_FMT(BAYER_GRBG8), AV_CODEC(RAWVIDEO), V4L2_FMT(SGRBG8) }, + { AV_FMT(BAYER_RGGB8), AV_CODEC(RAWVIDEO), V4L2_FMT(SRGGB8) }, +#endif +#ifdef V4L2_PIX_FMT_Y16 + { AV_FMT(GRAY16LE), AV_CODEC(RAWVIDEO), V4L2_FMT(Y16) }, +#endif +#ifdef V4L2_PIX_FMT_NV12M + { AV_FMT(NV12), AV_CODEC(RAWVIDEO), V4L2_FMT(NV12M) }, +#endif +#ifdef V4L2_PIX_FMT_NV21M + { AV_FMT(NV21), AV_CODEC(RAWVIDEO), V4L2_FMT(NV21M) }, +#endif +#ifdef V4L2_PIX_FMT_YUV420M + { AV_FMT(YUV420P), AV_CODEC(RAWVIDEO), V4L2_FMT(YUV420M) }, +#endif +#ifdef V4L2_PIX_FMT_NV16M + { AV_FMT(NV16), AV_CODEC(RAWVIDEO), V4L2_FMT(NV16M) }, +#endif +#ifdef V4L2_PIX_FMT_H263 + { AV_FMT(NONE), AV_CODEC(H263), V4L2_FMT(H263) }, +#endif +#ifdef V4L2_PIX_FMT_H264 + { AV_FMT(NONE), AV_CODEC(H264), V4L2_FMT(H264) }, +#endif +#ifdef V4L2_PIX_FMT_MPEG4 + { AV_FMT(NONE), AV_CODEC(MPEG4), V4L2_FMT(MPEG4) }, +#endif +#ifdef V4L2_PIX_FMT_CPIA1 + { AV_FMT(NONE), AV_CODEC(CPIA), V4L2_FMT(CPIA1) }, +#endif +#ifdef V4L2_PIX_FMT_DV + { AV_FMT(NONE), AV_CODEC(DVVIDEO), V4L2_FMT(DV) }, +#endif +#ifdef V4L2_PIX_FMT_MPEG1 + { AV_FMT(NONE), AV_CODEC(MPEG1VIDEO), V4L2_FMT(MPEG1) }, +#endif +#ifdef V4L2_PIX_FMT_MPEG2 + { AV_FMT(NONE), AV_CODEC(MPEG2VIDEO), V4L2_FMT(MPEG2) }, +#endif +#ifdef V4L2_PIX_FMT_VP8 + { AV_FMT(NONE), AV_CODEC(VP8), V4L2_FMT(VP8) }, +#endif +#ifdef V4L2_PIX_FMT_VP9 + { AV_FMT(NONE), AV_CODEC(VP9), V4L2_FMT(VP9) }, +#endif +#ifdef V4L2_PIX_FMT_HEVC + { AV_FMT(NONE), AV_CODEC(HEVC), V4L2_FMT(HEVC) }, +#endif +#ifdef V4L2_PIX_FMT_VC1_ANNEX_G + { AV_FMT(NONE), AV_CODEC(VC1), V4L2_FMT(VC1_ANNEX_G) }, +#endif +}; + +uint32_t ff_v4l2_format_avcodec_to_v4l2(enum AVCodecID avcodec) +{ + int i; + for (i = 0; i < FF_ARRAY_ELEMS(fmt_map); i++) { + if (fmt_map[i].avcodec == avcodec) + return fmt_map[i].v4l2_fmt; + } + return 0; +} + +uint32_t ff_v4l2_format_avfmt_to_v4l2(enum AVPixelFormat avfmt) +{ + int i; + for (i = 0; i < FF_ARRAY_ELEMS(fmt_map); i++) { + if (fmt_map[i].avfmt == avfmt) + return fmt_map[i].v4l2_fmt; + } + return 0; +} + +enum AVPixelFormat ff_v4l2_format_v4l2_to_avfmt(uint32_t v4l2_fmt, enum AVCodecID avcodec) +{ + int i; + for (i = 0; i < FF_ARRAY_ELEMS(fmt_map); i++) { + if (fmt_map[i].avcodec == avcodec && + fmt_map[i].v4l2_fmt == v4l2_fmt) + return fmt_map[i].avfmt; + } + return AV_PIX_FMT_NONE; +} |
