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182 lines
6.1 KiB
182 lines
6.1 KiB
/* |
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* V4L2 format helper functions |
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* |
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* Copyright (C) 2017 Alexis Ballier <aballier@gentoo.org> |
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* Copyright (C) 2017 Jorge Ramirez <jorge.ramirez-ortiz@linaro.org> |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#include <linux/videodev2.h> |
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#include <search.h> |
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#include "v4l2_fmt.h" |
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#define V4L2_FMT(x) V4L2_PIX_FMT_##x |
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#define AV_CODEC(x) AV_CODEC_ID_##x |
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#define AV_FMT(x) AV_PIX_FMT_##x |
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static const struct fmt_conversion { |
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enum AVPixelFormat avfmt; |
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enum AVCodecID avcodec; |
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uint32_t v4l2_fmt; |
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} fmt_map[] = { |
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{ AV_FMT(RGB555LE), AV_CODEC(RAWVIDEO), V4L2_FMT(RGB555) }, |
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{ AV_FMT(RGB555BE), AV_CODEC(RAWVIDEO), V4L2_FMT(RGB555X) }, |
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{ AV_FMT(RGB565LE), AV_CODEC(RAWVIDEO), V4L2_FMT(RGB565) }, |
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{ AV_FMT(RGB565BE), AV_CODEC(RAWVIDEO), V4L2_FMT(RGB565X) }, |
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{ AV_FMT(BGR24), AV_CODEC(RAWVIDEO), V4L2_FMT(BGR24) }, |
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{ AV_FMT(RGB24), AV_CODEC(RAWVIDEO), V4L2_FMT(RGB24) }, |
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{ AV_FMT(BGR0), AV_CODEC(RAWVIDEO), V4L2_FMT(BGR32) }, |
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{ AV_FMT(0RGB), AV_CODEC(RAWVIDEO), V4L2_FMT(RGB32) }, |
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{ AV_FMT(GRAY8), AV_CODEC(RAWVIDEO), V4L2_FMT(GREY) }, |
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{ AV_FMT(YUV420P), AV_CODEC(RAWVIDEO), V4L2_FMT(YUV420) }, |
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{ AV_FMT(YUYV422), AV_CODEC(RAWVIDEO), V4L2_FMT(YUYV) }, |
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{ AV_FMT(UYVY422), AV_CODEC(RAWVIDEO), V4L2_FMT(UYVY) }, |
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{ AV_FMT(YUV422P), AV_CODEC(RAWVIDEO), V4L2_FMT(YUV422P) }, |
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{ AV_FMT(YUV411P), AV_CODEC(RAWVIDEO), V4L2_FMT(YUV411P) }, |
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{ AV_FMT(YUV410P), AV_CODEC(RAWVIDEO), V4L2_FMT(YUV410) }, |
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{ AV_FMT(YUV410P), AV_CODEC(RAWVIDEO), V4L2_FMT(YVU410) }, |
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{ AV_FMT(NV12), AV_CODEC(RAWVIDEO), V4L2_FMT(NV12) }, |
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{ AV_FMT(NONE), AV_CODEC(MJPEG), V4L2_FMT(MJPEG) }, |
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{ AV_FMT(NONE), AV_CODEC(MJPEG), V4L2_FMT(JPEG) }, |
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#ifdef V4L2_PIX_FMT_SRGGB8 |
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{ AV_FMT(BAYER_BGGR8), AV_CODEC(RAWVIDEO), V4L2_FMT(SBGGR8) }, |
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{ AV_FMT(BAYER_GBRG8), AV_CODEC(RAWVIDEO), V4L2_FMT(SGBRG8) }, |
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{ AV_FMT(BAYER_GRBG8), AV_CODEC(RAWVIDEO), V4L2_FMT(SGRBG8) }, |
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{ AV_FMT(BAYER_RGGB8), AV_CODEC(RAWVIDEO), V4L2_FMT(SRGGB8) }, |
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#endif |
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#ifdef V4L2_PIX_FMT_Y16 |
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{ AV_FMT(GRAY16LE), AV_CODEC(RAWVIDEO), V4L2_FMT(Y16) }, |
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#endif |
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#ifdef V4L2_PIX_FMT_NV12M |
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{ AV_FMT(NV12), AV_CODEC(RAWVIDEO), V4L2_FMT(NV12M) }, |
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#endif |
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#ifdef V4L2_PIX_FMT_NV21M |
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{ AV_FMT(NV21), AV_CODEC(RAWVIDEO), V4L2_FMT(NV21M) }, |
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#endif |
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#ifdef V4L2_PIX_FMT_YUV420M |
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{ AV_FMT(YUV420P), AV_CODEC(RAWVIDEO), V4L2_FMT(YUV420M) }, |
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#endif |
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#ifdef V4L2_PIX_FMT_NV16M |
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{ AV_FMT(NV16), AV_CODEC(RAWVIDEO), V4L2_FMT(NV16M) }, |
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#endif |
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#ifdef V4L2_PIX_FMT_H263 |
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{ AV_FMT(NONE), AV_CODEC(H263), V4L2_FMT(H263) }, |
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#endif |
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#ifdef V4L2_PIX_FMT_H264 |
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{ AV_FMT(NONE), AV_CODEC(H264), V4L2_FMT(H264) }, |
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#endif |
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#ifdef V4L2_PIX_FMT_MPEG4 |
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{ AV_FMT(NONE), AV_CODEC(MPEG4), V4L2_FMT(MPEG4) }, |
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#endif |
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#ifdef V4L2_PIX_FMT_CPIA1 |
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{ AV_FMT(NONE), AV_CODEC(CPIA), V4L2_FMT(CPIA1) }, |
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#endif |
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#ifdef V4L2_PIX_FMT_DV |
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{ AV_FMT(NONE), AV_CODEC(DVVIDEO), V4L2_FMT(DV) }, |
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#endif |
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#ifdef V4L2_PIX_FMT_MPEG1 |
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{ AV_FMT(NONE), AV_CODEC(MPEG1VIDEO), V4L2_FMT(MPEG1) }, |
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#endif |
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#ifdef V4L2_PIX_FMT_MPEG2 |
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{ AV_FMT(NONE), AV_CODEC(MPEG2VIDEO), V4L2_FMT(MPEG2) }, |
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#endif |
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#ifdef V4L2_PIX_FMT_VP8 |
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{ AV_FMT(NONE), AV_CODEC(VP8), V4L2_FMT(VP8) }, |
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#endif |
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#ifdef V4L2_PIX_FMT_VP9 |
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{ AV_FMT(NONE), AV_CODEC(VP9), V4L2_FMT(VP9) }, |
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#endif |
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#ifdef V4L2_PIX_FMT_HEVC |
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{ AV_FMT(NONE), AV_CODEC(HEVC), V4L2_FMT(HEVC) }, |
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#endif |
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#ifdef V4L2_PIX_FMT_VC1_ANNEX_G |
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{ AV_FMT(NONE), AV_CODEC(VC1), V4L2_FMT(VC1_ANNEX_G) }, |
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#endif |
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}; |
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static int match_codec(const void *a, const void *b) |
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{ |
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if (*(enum AVCodecID *)a == ((struct fmt_conversion *)b)->avcodec) |
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return 0; |
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return 1; |
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} |
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uint32_t ff_v4l2_format_avcodec_to_v4l2(enum AVCodecID avcodec) |
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{ |
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size_t len = FF_ARRAY_ELEMS(fmt_map); |
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struct fmt_conversion *item; |
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item = lfind(&avcodec, fmt_map, &len, sizeof(fmt_map[0]), match_codec); |
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if (item) |
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return item->v4l2_fmt; |
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return 0; |
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} |
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static int match_fmt(const void *a, const void *b) |
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{ |
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if ( *(enum AVPixelFormat *)a == ((struct fmt_conversion *)b)->avfmt) |
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return 0; |
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return 1; |
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} |
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uint32_t ff_v4l2_format_avfmt_to_v4l2(enum AVPixelFormat avfmt) |
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{ |
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size_t len = FF_ARRAY_ELEMS(fmt_map); |
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struct fmt_conversion *item; |
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item = lfind(&avfmt, fmt_map, &len, sizeof(fmt_map[0]), match_fmt); |
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if (item) |
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return item->v4l2_fmt; |
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return 0; |
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} |
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struct v4l2fmt_avcodec_pair { |
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enum AVCodecID avcodec; |
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uint32_t v4l2_fmt; |
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}; |
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static int match_codecfmt(const void *a, const void *b) |
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{ |
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struct v4l2fmt_avcodec_pair *key = (struct v4l2fmt_avcodec_pair *) a; |
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struct fmt_conversion *item = (struct fmt_conversion *) b; |
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if (key->avcodec == item->avcodec && key->v4l2_fmt == item->v4l2_fmt) |
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return 0; |
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return 1; |
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} |
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enum AVPixelFormat ff_v4l2_format_v4l2_to_avfmt(uint32_t v4l2_fmt, enum AVCodecID avcodec) |
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{ |
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struct v4l2fmt_avcodec_pair const key = { |
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.v4l2_fmt = v4l2_fmt, |
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.avcodec = avcodec, |
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}; |
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size_t len = FF_ARRAY_ELEMS(fmt_map); |
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struct fmt_conversion *item; |
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item = lfind(&key, fmt_map, &len, sizeof(fmt_map[0]), match_codecfmt); |
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if (item) |
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return item->avfmt; |
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return AV_PIX_FMT_NONE; |
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}
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