diff options
author | arpi <arpi@b3059339-0415-0410-9bf9-f77b7e298cf2> | 2003-06-18 00:34:35 +0000 |
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committer | arpi <arpi@b3059339-0415-0410-9bf9-f77b7e298cf2> | 2003-06-18 00:34:35 +0000 |
commit | f910f3d94140ea17acc55d84420b58a05c712b98 (patch) | |
tree | ac338a86802aa4fdc17374247b7af0deaf2ef886 /libmpcodecs/vd_hmblck.c | |
parent | 669ca2803d3ea6f7905cc97e63892729bd5c427c (diff) | |
download | mpv-f910f3d94140ea17acc55d84420b58a05c712b98.tar.bz2 mpv-f910f3d94140ea17acc55d84420b58a05c712b98.tar.xz |
HM12 & NV12 "decoder" (specially interleaved YUV formats, used by Hauppauge's PVR cards)
based on patch by Alex <d18c7db@hotmail.com>
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@10306 b3059339-0415-0410-9bf9-f77b7e298cf2
Diffstat (limited to 'libmpcodecs/vd_hmblck.c')
-rw-r--r-- | libmpcodecs/vd_hmblck.c | 138 |
1 files changed, 138 insertions, 0 deletions
diff --git a/libmpcodecs/vd_hmblck.c b/libmpcodecs/vd_hmblck.c new file mode 100644 index 0000000000..bbecf4a6f8 --- /dev/null +++ b/libmpcodecs/vd_hmblck.c @@ -0,0 +1,138 @@ +#include <stdio.h> +#include <stdlib.h> + +#include "config.h" +#include "mp_msg.h" + +#include "vd_internal.h" + +#define TEMP_BUF_SIZE (720*576) + +static vd_info_t info = { + "Hauppauge Macroblock/NV12 Decoder", + "hmblck", + "Alex <d18c7db@hotmail.com>, A'rpi", + "Alex <d18c7db@hotmail.com>", + "uncompressed" +}; + +LIBVD_EXTERN(hmblck) + +static void de_macro_y(unsigned char* dst,unsigned char* src,int dstride,int w,int h){ + unsigned int y; + // descramble Y plane + for (y=0; y<h; y+=16) { + unsigned int x; + for (x=0; x<w; x+=16) { + unsigned int i; + for (i=0; i<16; i++) { + memcpy(dst + x + (y+i)*dstride, src, 16); + src+=16; + } + } + } +} + +static void de_macro_uv(unsigned char* dstu,unsigned char* dstv,unsigned char* src,int dstride,int w,int h){ + unsigned int y; + // descramble U/V plane + for (y=0; y<h; y+=16) { + unsigned int x; + for (x=0; x<w; x+=8) { + unsigned int i; + for (i=0; i<16; i++) { + int idx=x + (y+i)*dstride; + dstu[idx+0]=src[0]; dstv[idx+0]=src[1]; + dstu[idx+1]=src[2]; dstv[idx+1]=src[3]; + dstu[idx+2]=src[4]; dstv[idx+2]=src[5]; + dstu[idx+3]=src[6]; dstv[idx+3]=src[7]; + dstu[idx+4]=src[8]; dstv[idx+4]=src[9]; + dstu[idx+5]=src[10]; dstv[idx+5]=src[11]; + dstu[idx+6]=src[12]; dstv[idx+6]=src[13]; + dstu[idx+7]=src[14]; dstv[idx+7]=src[15]; + src+=16; + } + } + } +} + +/************************************************************************* + * convert a nv12 buffer to yv12 + */ +static int nv12_to_yv12(void *data, int len, mp_image_t* mpi) { + unsigned int Y_size = mpi->width * mpi->height; + unsigned int UV_size = mpi->chroma_width * mpi->chroma_height; + unsigned int idx; + unsigned char *dst_Y = mpi->planes[0]; + unsigned char *dst_U = mpi->planes[1]; + unsigned char *dst_V = mpi->planes[2]; + unsigned char *src = data + Y_size; + + // sanity check raw stream + if ( (len != (Y_size + (UV_size<<1))) ) { + mp_msg(MSGT_DECVIDEO, MSGL_ERR, + "hmblck: Image size inconsistent with data size.\n"); + return 0; + } + if ( (mpi->width > 720) || (mpi->height > 576) ) { + mp_msg(MSGT_DECVIDEO,MSGL_ERR, + "hmblck: Image size is too big.\n"); + return 0; + } + if (mpi->num_planes != 3) { + mp_msg(MSGT_DECVIDEO,MSGL_ERR, + "hmblck: Incorrect number of image planes.\n"); + return 0; + } + + // luma data is easy, just copy it + memcpy(dst_Y, data, Y_size); + + // chroma data is interlaced UVUV... so deinterlace it + for(idx=0; idx<UV_size; idx++ ) { + *(dst_U + idx) = *(src + (idx<<1) + 0); + *(dst_V + idx) = *(src + (idx<<1) + 1); + } + return 1; +} + +/************************************************************************* + * set/get/query special features/parameters + */ +static int control(sh_video_t *sh,int cmd, void *arg,...){ + return CONTROL_UNKNOWN; +} +/************************************************************************* + * init driver + */ +static int init(sh_video_t *sh){ + return mpcodecs_config_vo(sh,sh->disp_w,sh->disp_h,sh->format); +} +/************************************************************************* + * uninit driver + */ +static void uninit(sh_video_t *sh){ +} +/************************************************************************* + * decode a frame + */ +static mp_image_t* decode(sh_video_t *sh,void* data,int len,int flags){ + mp_image_t* mpi; + + if(len<=0) return NULL; // skipped frame + + mpi=mpcodecs_get_image(sh, MP_IMGTYPE_TEMP, MP_IMGFLAG_ACCEPT_STRIDE, + sh->disp_w, sh->disp_h); + if(!mpi) return NULL; + + if(sh->format == IMGFMT_HM12) { + //if(!de_macro(sh, data, len, flags, mpi)) return NULL; + de_macro_y(mpi->planes[0],data,mpi->stride[0],mpi->w,mpi->h); + de_macro_uv(mpi->planes[1],mpi->planes[2],data+mpi->w*mpi->h,mpi->stride[1],mpi->w/2,mpi->h/2); + } else { + if(!nv12_to_yv12(data, len, mpi)) return NULL; + } + + return mpi; +} +/*************************************************************************/ |