mpv/libmpcodecs/img_format.c

#include "config.h"
#include "img_format.h"
#include "stdio.h"

const char *vo_format_name(int format)
{
    static char unknown_format[20];
    switch(format)
    {
	case IMGFMT_RGB1: return "RGB 1-bit";
	case IMGFMT_RGB4: return "RGB 4-bit";
	case IMGFMT_RG4B: return "RGB 4-bit per byte";
	case IMGFMT_RGB8: return "RGB 8-bit";
	case IMGFMT_RGB15: return "RGB 15-bit";
	case IMGFMT_RGB16: return "RGB 16-bit";
	case IMGFMT_RGB24: return "RGB 24-bit";
//	case IMGFMT_RGB32: return "RGB 32-bit";
	case IMGFMT_RGB48LE: return "RGB 48-bit LE";
	case IMGFMT_RGB48BE: return "RGB 48-bit BE";
	case IMGFMT_BGR1: return "BGR 1-bit";
	case IMGFMT_BGR4: return "BGR 4-bit";
	case IMGFMT_BG4B: return "BGR 4-bit per byte";
	case IMGFMT_BGR8: return "BGR 8-bit";
	case IMGFMT_BGR15: return "BGR 15-bit";
	case IMGFMT_BGR16: return "BGR 16-bit";
	case IMGFMT_BGR24: return "BGR 24-bit";
//	case IMGFMT_BGR32: return "BGR 32-bit";
	case IMGFMT_ABGR: return "ABGR";
	case IMGFMT_BGRA: return "BGRA";
	case IMGFMT_ARGB: return "ARGB";
	case IMGFMT_RGBA: return "RGBA";
	case IMGFMT_YVU9: return "Planar YVU9";
	case IMGFMT_IF09: return "Planar IF09";
	case IMGFMT_YV12: return "Planar YV12";
	case IMGFMT_I420: return "Planar I420";
	case IMGFMT_IYUV: return "Planar IYUV";
	case IMGFMT_CLPL: return "Planar CLPL";
	case IMGFMT_Y800: return "Planar Y800";
	case IMGFMT_Y8: return "Planar Y8";
	case IMGFMT_420P16_LE: return "Planar 420P 16-bit little-endian";
	case IMGFMT_420P16_BE: return "Planar 420P 16-bit big-endian";
	case IMGFMT_422P16_LE: return "Planar 422P 16-bit little-endian";
	case IMGFMT_422P16_BE: return "Planar 422P 16-bit big-endian";
	case IMGFMT_444P16_LE: return "Planar 444P 16-bit little-endian";
	case IMGFMT_444P16_BE: return "Planar 444P 16-bit big-endian";
	case IMGFMT_420A: return "Planar 420P with alpha";
	case IMGFMT_444P: return "Planar 444P";
	case IMGFMT_422P: return "Planar 422P";
	case IMGFMT_411P: return "Planar 411P";
	case IMGFMT_NV12: return "Planar NV12";
	case IMGFMT_NV21: return "Planar NV21";
        case IMGFMT_HM12: return "Planar NV12 Macroblock";
	case IMGFMT_IUYV: return "Packed IUYV";
	case IMGFMT_IY41: return "Packed IY41";
	case IMGFMT_IYU1: return "Packed IYU1";
	case IMGFMT_IYU2: return "Packed IYU2";
	case IMGFMT_UYVY: return "Packed UYVY";
	case IMGFMT_UYNV: return "Packed UYNV";
	case IMGFMT_cyuv: return "Packed CYUV";
	case IMGFMT_Y422: return "Packed Y422";
	case IMGFMT_YUY2: return "Packed YUY2";
	case IMGFMT_YUNV: return "Packed YUNV";
	case IMGFMT_YVYU: return "Packed YVYU";
	case IMGFMT_Y41P: return "Packed Y41P";
	case IMGFMT_Y211: return "Packed Y211";
	case IMGFMT_Y41T: return "Packed Y41T";
	case IMGFMT_Y42T: return "Packed Y42T";
	case IMGFMT_V422: return "Packed V422";
	case IMGFMT_V655: return "Packed V655";
	case IMGFMT_CLJR: return "Packed CLJR";
	case IMGFMT_YUVP: return "Packed YUVP";
	case IMGFMT_UYVP: return "Packed UYVP";
	case IMGFMT_MPEGPES: return "Mpeg PES";
	case IMGFMT_ZRMJPEGNI: return "Zoran MJPEG non-interlaced";
	case IMGFMT_ZRMJPEGIT: return "Zoran MJPEG top field first";
	case IMGFMT_ZRMJPEGIB: return "Zoran MJPEG bottom field first";
	case IMGFMT_XVMC_MOCO_MPEG2: return "MPEG1/2 Motion Compensation";
	case IMGFMT_XVMC_IDCT_MPEG2: return "MPEG1/2 Motion Compensation and IDCT";
	case IMGFMT_VDPAU_MPEG1: return "MPEG1 VDPAU acceleration";
	case IMGFMT_VDPAU_MPEG2: return "MPEG2 VDPAU acceleration";
	case IMGFMT_VDPAU_H264: return "H.264 VDPAU acceleration";
        case IMGFMT_VDPAU_MPEG4: return "MPEG-4 Part 2 VDPAU acceleration";
	case IMGFMT_VDPAU_WMV3: return "WMV3 VDPAU acceleration";
	case IMGFMT_VDPAU_VC1: return "VC1 VDPAU acceleration";
    }
    snprintf(unknown_format,20,"Unknown 0x%04x",format);
    return unknown_format;
}

int mp_get_chroma_shift(int format, int *x_shift, int *y_shift)
{
    int xs = 0, ys = 0;
    int bpp;
    int bpp_factor = 1;
    int err = 0;
    switch (format) {
    case IMGFMT_420P16_LE:
    case IMGFMT_420P16_BE:
        bpp_factor = 2;
    case IMGFMT_420A:
    case IMGFMT_I420:
    case IMGFMT_IYUV:
    case IMGFMT_YV12:
        xs = 1;
        ys = 1;
        break;
    case IMGFMT_IF09:
    case IMGFMT_YVU9:
        xs = 2;
        ys = 2;
        break;
    case IMGFMT_444P16_LE:
    case IMGFMT_444P16_BE:
        bpp_factor = 2;
    case IMGFMT_444P:
        xs = 0;
        ys = 0;
        break;
    case IMGFMT_422P16_LE:
    case IMGFMT_422P16_BE:
        bpp_factor = 2;
    case IMGFMT_422P:
        xs = 1;
        ys = 0;
        break;
    case IMGFMT_411P:
        xs = 2;
        ys = 0;
        break;
    case IMGFMT_440P:
        xs = 0;
        ys = 1;
        break;
    default:
        err = 1;
        break;
    }
    if (x_shift) *x_shift = xs;
    if (y_shift) *y_shift = ys;
    bpp = 8 + (16 >> (xs + ys));
    if (format == IMGFMT_420A)
        bpp += 8;
    bpp *= bpp_factor;
    return err ? 0 : bpp;
}