ffmpeg/libavdevice/v4l2-common.c

   1 /*
   2  * This file is part of FFmpeg.
   3  *
   4  * FFmpeg is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * FFmpeg is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with FFmpeg; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  17  */
  18
  19 #include "v4l2-common.h"
  20
  21 const struct fmt_map ff_fmt_conversion_table[] = {
  22     //ff_fmt              codec_id              v4l2_fmt
  23     { AV_PIX_FMT_YUV420P, AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_YUV420  },
  24     { AV_PIX_FMT_YUV420P, AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_YVU420  },
  25     { AV_PIX_FMT_YUV422P, AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_YUV422P },
  26     { AV_PIX_FMT_YUYV422, AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_YUYV    },
  27     { AV_PIX_FMT_UYVY422, AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_UYVY    },
  28     { AV_PIX_FMT_YUV411P, AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_YUV411P },
  29     { AV_PIX_FMT_YUV410P, AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_YUV410  },
  30     { AV_PIX_FMT_YUV410P, AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_YVU410  },
  31     { AV_PIX_FMT_RGB555LE,AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_RGB555  },
  32     { AV_PIX_FMT_RGB555BE,AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_RGB555X },
  33     { AV_PIX_FMT_RGB565LE,AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_RGB565  },
  34     { AV_PIX_FMT_RGB565BE,AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_RGB565X },
  35     { AV_PIX_FMT_BGR24,   AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_BGR24   },
  36     { AV_PIX_FMT_RGB24,   AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_RGB24   },
  37     { AV_PIX_FMT_BGR0,    AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_BGR32   },
  38     { AV_PIX_FMT_0RGB,    AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_RGB32   },
  39     { AV_PIX_FMT_GRAY8,   AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_GREY    },
  40 #ifdef V4L2_PIX_FMT_Y16
  41     { AV_PIX_FMT_GRAY16LE,AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_Y16     },
  42 #endif
  43     { AV_PIX_FMT_NV12,    AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_NV12    },
  44     { AV_PIX_FMT_NONE,    AV_CODEC_ID_MJPEG,    V4L2_PIX_FMT_MJPEG   },
  45     { AV_PIX_FMT_NONE,    AV_CODEC_ID_MJPEG,    V4L2_PIX_FMT_JPEG    },
  46 #ifdef V4L2_PIX_FMT_H264
  47     { AV_PIX_FMT_NONE,    AV_CODEC_ID_H264,     V4L2_PIX_FMT_H264    },
  48 #endif
  49 #ifdef V4L2_PIX_FMT_MPEG4
  50     { AV_PIX_FMT_NONE,    AV_CODEC_ID_MPEG4,    V4L2_PIX_FMT_MPEG4   },
  51 #endif
  52 #ifdef V4L2_PIX_FMT_CPIA1
  53     { AV_PIX_FMT_NONE,    AV_CODEC_ID_CPIA,     V4L2_PIX_FMT_CPIA1   },
  54 #endif
  55 #ifdef V4L2_PIX_FMT_SRGGB8
  56     { AV_PIX_FMT_BAYER_BGGR8, AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_SBGGR8 },
  57     { AV_PIX_FMT_BAYER_GBRG8, AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_SGBRG8 },
  58     { AV_PIX_FMT_BAYER_GRBG8, AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_SGRBG8 },
  59     { AV_PIX_FMT_BAYER_RGGB8, AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_SRGGB8 },
  60 #endif
  61     { AV_PIX_FMT_NONE,    AV_CODEC_ID_NONE,     0                    },
  62 };
  63
  64 uint32_t ff_fmt_ff2v4l(enum AVPixelFormat pix_fmt, enum AVCodecID codec_id)
  65 {
  66     int i;
  67
  68     for (i = 0; ff_fmt_conversion_table[i].codec_id != AV_CODEC_ID_NONE; i++) {
  69         if ((codec_id == AV_CODEC_ID_NONE ||
  70              ff_fmt_conversion_table[i].codec_id == codec_id) &&
  71             (pix_fmt == AV_PIX_FMT_NONE ||
  72              ff_fmt_conversion_table[i].ff_fmt == pix_fmt)) {
  73             return ff_fmt_conversion_table[i].v4l2_fmt;
  74         }
  75     }
  76
  77     return 0;
  78 }
  79
  80 enum AVPixelFormat ff_fmt_v4l2ff(uint32_t v4l2_fmt, enum AVCodecID codec_id)
  81 {
  82     int i;
  83
  84     for (i = 0; ff_fmt_conversion_table[i].codec_id != AV_CODEC_ID_NONE; i++) {
  85         if (ff_fmt_conversion_table[i].v4l2_fmt == v4l2_fmt &&
  86             ff_fmt_conversion_table[i].codec_id == codec_id) {
  87             return ff_fmt_conversion_table[i].ff_fmt;
  88         }
  89     }
  90
  91     return AV_PIX_FMT_NONE;
  92 }
  93
  94 enum AVCodecID ff_fmt_v4l2codec(uint32_t v4l2_fmt)
  95 {
  96     int i;
  97
  98     for (i = 0; ff_fmt_conversion_table[i].codec_id != AV_CODEC_ID_NONE; i++) {
  99         if (ff_fmt_conversion_table[i].v4l2_fmt == v4l2_fmt) {
 100             return ff_fmt_conversion_table[i].codec_id;
 101         }
 102     }
 103
 104     return AV_CODEC_ID_NONE;
 105 }