mirror of
https://github.com/mpv-player/mpv
synced 2024-12-25 16:33:02 +00:00
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.
196 lines
5.6 KiB
C
196 lines
5.6 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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#include "config.h"
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#include <stdlib.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <string.h>
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#include "core/m_option.h"
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#include "stream/stream.h"
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#include "demux.h"
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#include "stheader.h"
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#include "video/img_format.h"
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#include "video/img_fourcc.h"
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static int format = MP_FOURCC_I420;
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static int mp_format;
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static int size_id = 0;
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static int width = 0;
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static int height = 0;
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static float fps = 25;
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static int imgsize=0;
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const m_option_t demux_rawvideo_opts[] = {
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// size:
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{ "w", &width, CONF_TYPE_INT,CONF_RANGE,1,8192, NULL },
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{ "h", &height, CONF_TYPE_INT,CONF_RANGE,1,8192, NULL },
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{ "sqcif", &size_id, CONF_TYPE_FLAG,0,0,1, NULL },
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{ "qcif", &size_id, CONF_TYPE_FLAG,0,0,2, NULL },
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{ "cif", &size_id, CONF_TYPE_FLAG,0,0,3, NULL },
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{ "4cif", &size_id, CONF_TYPE_FLAG,0,0,4, NULL },
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{ "pal", &size_id, CONF_TYPE_FLAG,0,0,5, NULL },
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{ "ntsc", &size_id, CONF_TYPE_FLAG,0,0,6, NULL },
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{ "16cif", &size_id, CONF_TYPE_FLAG,0,0,7, NULL },
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{ "sif", &size_id, CONF_TYPE_FLAG,0,0,8, NULL },
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// format:
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{ "format", &format, CONF_TYPE_FOURCC, 0, 0 , 0, NULL },
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{ "mp-format", &mp_format, CONF_TYPE_IMGFMT, 0, 0 , 0, NULL },
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// misc:
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{ "fps", &fps, CONF_TYPE_FLOAT,CONF_RANGE,0.001,1000, NULL },
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{ "size", &imgsize, CONF_TYPE_INT, CONF_RANGE, 1 , 8192*8192*4, NULL },
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{NULL, NULL, 0, 0, 0, 0, NULL}
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};
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static demuxer_t* demux_rawvideo_open(demuxer_t* demuxer) {
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sh_video_t* sh_video;
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switch(size_id){
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case 1: width=128; height=96; break;
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case 2: width=176; height=144; break;
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case 3: width=352; height=288; break;
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case 4: width=704; height=576; break;
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case 5: width=720; height=576; break;
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case 6: width=720; height=480; break;
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case 7: width=1408;height=1152;break;
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case 8: width=352; height=240; break;
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}
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if(!width || !height){
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mp_msg(MSGT_DEMUX,MSGL_ERR,"rawvideo: width or height not specified!\n");
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return 0;
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}
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int tag, fmt;
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if (mp_format) {
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tag = MP_FOURCC_IMGFMT;
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fmt = mp_format;
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if (!imgsize) {
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struct mp_imgfmt_desc desc = mp_imgfmt_get_desc(mp_format);
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for (int p = 0; p < desc.num_planes; p++) {
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imgsize += ((width >> desc.xs[p]) * (height >> desc.ys[p]) *
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desc.bpp[p] + 7) / 8;
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}
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}
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} else {
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tag = MP_FOURCC_RAWVIDEO;
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fmt = format;
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}
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if (!imgsize) {
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int bpp = 0;
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switch(format){
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case MP_FOURCC_I420: case MP_FOURCC_IYUV:
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case MP_FOURCC_NV12: case MP_FOURCC_NV21:
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case MP_FOURCC_HM12:
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case MP_FOURCC_YV12:
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bpp = 12;
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break;
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case MP_FOURCC_RGB12: case MP_FOURCC_BGR12:
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case MP_FOURCC_RGB15: case MP_FOURCC_BGR15:
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case MP_FOURCC_RGB16: case MP_FOURCC_BGR16:
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case MP_FOURCC_YUY2: case MP_FOURCC_UYVY:
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bpp = 16;
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break;
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case MP_FOURCC_RGB8: case MP_FOURCC_BGR8:
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case MP_FOURCC_Y800: case MP_FOURCC_Y8:
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bpp = 8;
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break;
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case MP_FOURCC_RGB24: case MP_FOURCC_BGR24:
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bpp = 24;
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break;
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case MP_FOURCC_RGB32: case MP_FOURCC_BGR32:
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bpp = 32;
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break;
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}
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if (!bpp) {
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mp_msg(MSGT_DEMUX,MSGL_ERR,"rawvideo: img size not specified and unknown format!\n");
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return 0;
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}
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imgsize = width * height * bpp / 8;
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}
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sh_video = new_sh_video(demuxer,0);
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sh_video->format=tag;
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sh_video->imgfmt=fmt;
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sh_video->fps=fps;
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sh_video->frametime=1.0/fps;
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sh_video->disp_w=width;
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sh_video->disp_h=height;
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sh_video->i_bps=fps*imgsize;
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demuxer->movi_start = demuxer->stream->start_pos;
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demuxer->movi_end = demuxer->stream->end_pos;
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demuxer->video->sh = sh_video;
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sh_video->ds = demuxer->video;
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return demuxer;
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}
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static int demux_rawvideo_fill_buffer(demuxer_t* demuxer, demux_stream_t *ds) {
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sh_video_t* sh = demuxer->video->sh;
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int64_t pos;
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if(demuxer->stream->eof) return 0;
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if(ds!=demuxer->video) return 0;
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pos = stream_tell(demuxer->stream);
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ds_read_packet(ds,demuxer->stream,imgsize,(pos/imgsize)*sh->frametime,pos,0x10);
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return 1;
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}
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static void demux_rawvideo_seek(demuxer_t *demuxer,float rel_seek_secs,float audio_delay,int flags){
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stream_t* s = demuxer->stream;
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sh_video_t* sh_video = demuxer->video->sh;
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int64_t pos;
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pos = (flags & SEEK_ABSOLUTE) ? demuxer->movi_start : stream_tell(s);
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if(flags & SEEK_FACTOR)
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pos += ((demuxer->movi_end - demuxer->movi_start)*rel_seek_secs);
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else
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pos += (rel_seek_secs*sh_video->i_bps);
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if(pos < 0) pos = 0;
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if(demuxer->movi_end && pos > demuxer->movi_end) pos = (demuxer->movi_end-imgsize);
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pos/=imgsize;
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stream_seek(s,pos*imgsize);
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//sh_video->timer=pos * sh_video->frametime;
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demuxer->video->pts = pos * sh_video->frametime;
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// printf("demux_rawvideo: streamtell=%d\n",(int)stream_tell(demuxer->stream));
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}
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const demuxer_desc_t demuxer_desc_rawvideo = {
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"Raw video demuxer",
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"rawvideo",
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"rawvideo",
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"?",
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"",
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DEMUXER_TYPE_RAWVIDEO,
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0, // no autodetect
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NULL,
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demux_rawvideo_fill_buffer,
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demux_rawvideo_open,
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NULL,
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demux_rawvideo_seek,
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NULL
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};
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