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https://github.com/mpv-player/mpv
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8751a0e261
mplayer's video chain traditionally used FourCCs for pixel formats. For example, it used IMGFMT_YV12 for 4:2:0 YUV, which was defined to the string 'YV12' interpreted as unsigned int. Additionally, it used to encode information into the numeric values of some formats. The RGB formats had their bit depth and endian encoded into the least significant byte. Extended planar formats (420P10 etc.) had chroma shift, endian, and component bit depth encoded. (This has been removed in recent commits.) Replace the FourCC mess with a simple enum. Remove all the redundant formats like YV12/I420/IYUV. Replace some image format names by something more intuitive, most importantly IMGFMT_YV12 -> IMGFMT_420P. Add img_fourcc.h, which contains the old IDs for code that actually uses FourCCs. Change the way demuxers, that output raw video, identify the video format: they set either MP_FOURCC_RAWVIDEO or MP_FOURCC_IMGFMT to request the rawvideo decoder, and sh_video->imgfmt specifies the pixel format. Like the previous hack, this is supposed to avoid the need for a complete codecs.cfg entry per format, or other lookup tables. (Note that the RGB raw video FourCCs mostly rely on ffmpeg's mappings for NUT raw video, but this is still considered better than adding a raw video decoder - even if trivial, it would be full of annoying lookup tables.) The TV code has not been tested. Some corrective changes regarding endian and other image format flags creep in.
95 lines
2.6 KiB
C
95 lines
2.6 KiB
C
/*
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* This file is part of MPlayer.
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*
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* MPlayer is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* MPlayer 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with MPlayer; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef MPLAYER_TVI_DEF_H
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#define MPLAYER_TVI_DEF_H
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#include <stdlib.h> /* malloc */
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#include <string.h> /* memset */
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#include "video/img_fourcc.h"
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#include "tv.h"
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static int init(priv_t *priv);
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static int uninit(priv_t *priv);
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static int control(priv_t *priv, int cmd, void *arg);
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static int start(priv_t *priv);
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static double grab_video_frame(priv_t *priv, char *buffer, int len);
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static int get_video_framesize(priv_t *priv);
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static double grab_audio_frame(priv_t *priv, char *buffer, int len);
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static int get_audio_framesize(priv_t *priv);
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static const tvi_functions_t functions =
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{
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init,
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uninit,
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control,
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start,
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grab_video_frame,
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get_video_framesize,
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grab_audio_frame,
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get_audio_framesize
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};
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/**
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Fills video frame in given buffer with blue color for yv12,i420,uyvy,yuy2.
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Other formats will be filled with 0xC0
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*/
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static inline void fill_blank_frame(char* buffer,int len,int fmt){
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int i;
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// RGB(0,0,255) <-> YVU(41,110,240)
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switch(fmt){
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case MP_FOURCC_YV12:
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memset(buffer, 41,4*len/6); //Y
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memset(buffer+4*len/6, 110,len/6);//V
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memset(buffer+5*len/6, 240,len/6);//U
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break;
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case MP_FOURCC_I420:
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memset(buffer, 41,4*len/6); //Y
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memset(buffer+4*len/6, 240,len/6);//U
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memset(buffer+5*len/6, 110,len/6);//V
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break;
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case MP_FOURCC_UYVY:
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for(i=0;i<len;i+=4){
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buffer[i]=0xFF;
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buffer[i+1]=0;
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buffer[i+2]=0;
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buffer[i+3]=0;
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}
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break;
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case MP_FOURCC_YUY2:
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for(i=0;i<len;i+=4){
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buffer[i]=0;
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buffer[i+1]=0xFF;
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buffer[i+2]=0;
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buffer[i+3]=0;
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}
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break;
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case MP_FOURCC_MJPEG:
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/*
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This is compressed format. I don't know yet how to fill such frame with blue color.
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Keeping frame unchanged.
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*/
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break;
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default:
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memset(buffer,0xC0,len);
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}
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}
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#endif /* MPLAYER_TVI_DEF_H */
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