libmpcodecs/ve_libdv.c

   1 /*
   2  * requires libdv-0.9.5 !!!
   3  * (v0.9.0 is too old and has no encoding functionality exported!)
   4  *
   5  * This file is part of MPlayer.
   6  *
   7  * MPlayer is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * MPlayer is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along
  18  * with MPlayer; if not, write to the Free Software Foundation, Inc.,
  19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  20  */
  21
  22 #include <stdio.h>
  23 #include <stdlib.h>
  24 #include <string.h>
  25
  26 #include "config.h"
  27 #include "mp_msg.h"
  28
  29 #include "codec-cfg.h"
  30 #include "stream/stream.h"
  31 #include "libmpdemux/demuxer.h"
  32 #include "libmpdemux/stheader.h"
  33
  34 #include "stream/stream.h"
  35 #include "libmpdemux/muxer.h"
  36
  37 #include "img_format.h"
  38 #include "mp_image.h"
  39 #include "vf.h"
  40
  41 #include <libdv/dv.h>
  42
  43 #ifndef DV_WIDTH
  44 #define DV_WIDTH       720
  45 #define DV_PAL_HEIGHT  576
  46 #define DV_NTSC_HEIGHT 480
  47 #endif
  48
  49 struct vf_priv_s {
  50     muxer_stream_t* mux;
  51     dv_encoder_t* enc;
  52
  53 };
  54 #define mux_v (vf->priv->mux)
  55
  56 //===========================================================================//
  57
  58 static int config(struct vf_instance *vf,
  59         int width, int height, int d_width, int d_height,
  60         unsigned int flags, unsigned int outfmt){
  61
  62     if(width!=DV_WIDTH || (height!=DV_PAL_HEIGHT && height!=DV_NTSC_HEIGHT)){
  63         mp_msg(MSGT_VFILTER,MSGL_ERR,"DV: only 720x480 (NTSC) and 720x576 (PAL) resolutions allowed! Try with -vf scale=720:480\n");
  64     }
  65
  66     vf->priv->enc->isPAL=(height==DV_PAL_HEIGHT);
  67     vf->priv->enc->is16x9=(d_width/(float)d_height > 1.7); // 16:9=1.777777
  68     vf->priv->enc->vlc_encode_passes=3;
  69     vf->priv->enc->static_qno=0;
  70     vf->priv->enc->force_dct=0;
  71
  72     mux_v->bih->biWidth=width;
  73     mux_v->bih->biHeight=height;
  74     mux_v->bih->biSizeImage=mux_v->bih->biWidth*mux_v->bih->biHeight*(mux_v->bih->biBitCount/8);
  75     mux_v->aspect = (float)d_width/d_height;
  76
  77     return 1;
  78 }
  79
  80 static int control(struct vf_instance *vf, int request, void* data){
  81
  82     return CONTROL_UNKNOWN;
  83 }
  84
  85 static int query_format(struct vf_instance *vf, unsigned int fmt){
  86     if(fmt==IMGFMT_YUY2) return VFCAP_CSP_SUPPORTED | VFCAP_CSP_SUPPORTED_BY_HW;
  87     if(fmt==IMGFMT_RGB24) return VFCAP_CSP_SUPPORTED;
  88     return 0;
  89 }
  90
  91 static int put_image(struct vf_instance *vf, mp_image_t *mpi, double pts){
  92
  93     dv_encode_full_frame(vf->priv->enc, mpi->planes,
  94         (mpi->flags&MP_IMGFLAG_YUV) ? e_dv_color_yuv : e_dv_color_rgb,
  95         mux_v->buffer);
  96
  97     muxer_write_chunk(mux_v, 480 * (vf->priv->enc->isPAL ? 300 : 250) , 0x10, pts, pts);
  98     return 1;
  99 }
 100
 101 //===========================================================================//
 102
 103 static int vf_open(vf_instance_t *vf, char* args){
 104     vf->config=config;
 105     vf->default_caps=VFCAP_CONSTANT;
 106     vf->control=control;
 107     vf->query_format=query_format;
 108     vf->put_image=put_image;
 109     vf->priv=malloc(sizeof(struct vf_priv_s));
 110     memset(vf->priv,0,sizeof(struct vf_priv_s));
 111     vf->priv->mux=(muxer_stream_t*)args;
 112
 113     vf->priv->enc=dv_encoder_new(0,1,1); // FIXME, parse some options!
 114     if(!vf->priv->enc) return 0;
 115
 116     mux_v->bih=calloc(1, sizeof(*mux_v->bih));
 117     mux_v->bih->biSize=sizeof(*mux_v->bih);
 118     mux_v->bih->biWidth=0;
 119     mux_v->bih->biHeight=0;
 120     mux_v->bih->biCompression=mmioFOURCC('d','v','s','d');
 121     mux_v->bih->biPlanes=1;
 122     mux_v->bih->biBitCount=24;
 123
 124     return 1;
 125 }
 126
 127 vf_info_t ve_info_libdv = {
 128     "DV encoder using libdv",
 129     "libdv",
 130     "A'rpi",
 131     "for internal use by mencoder",
 132     vf_open
 133 };
 134
 135 //===========================================================================//