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libmpeg2 4:2:2 decoding
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@13996 b3059339-0415-0410-9bf9-f77b7e298cf2
This commit is contained in:
henry
parent
97b3e560f5
commit
a17f2fa7b4
@ -30,6 +30,7 @@ videocodec mpeg12
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driver libmpeg2
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; dll "libmpeg2"
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out YV12,I420,IYUV
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out UYVY
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videocodec ffmpeg1
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info "FFmpeg MPEG 1"
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@ -26,19 +26,31 @@ LIBVD_EXTERN(libmpeg2)
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#include "libmpeg2/mpeg2.h"
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#include "libmpeg2/attributes.h"
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#include "libmpeg2/mpeg2_internal.h"
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//#include "libmpeg2/convert.h"
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#include "../cpudetect.h"
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mpeg2_convert_t mpeg2convert_uyvy;
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// to set/get/query special features/parameters
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static int control(sh_video_t *sh,int cmd,void* arg,...){
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mpeg2dec_t * mpeg2dec = sh->context;
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switch(cmd) {
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case VDCTRL_QUERY_FORMAT:
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if ( (*((int*)arg)) == IMGFMT_YV12 && mpeg2dec->convert == NULL)
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return CONTROL_TRUE;
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if ( (*((int*)arg)) == IMGFMT_UYVY && mpeg2dec->convert == mpeg2convert_uyvy)
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return CONTROL_TRUE;
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return CONTROL_FALSE;
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}
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return CONTROL_UNKNOWN;
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}
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// init driver
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static int init(sh_video_t *sh){
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mpeg2dec_t * mpeg2dec;
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const mpeg2_info_t * info;
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// const mpeg2_info_t * info;
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int accel;
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accel = 0;
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@ -67,14 +79,16 @@ static int init(sh_video_t *sh){
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mpeg2dec->pending_length = 0;
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return 1;
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//return mpcodecs_config_vo(sh,sh->disp_w,sh->disp_h,IMGFMT_YV12);
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}
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// uninit driver
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static void uninit(sh_video_t *sh){
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mpeg2dec_t * mpeg2dec = sh->context;
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if (mpeg2dec->pending_buffer) free(mpeg2dec->pending_buffer);
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mpeg2dec->decoder.convert_id=NULL;
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if (mpeg2dec->convert == NULL) {
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mpeg2dec->decoder.convert=NULL;
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mpeg2dec->decoder.convert_id=NULL;
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}
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mpeg2_close (mpeg2dec);
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}
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@ -102,10 +116,11 @@ static mp_image_t* decode(sh_video_t *sh,void* data,int len,int flags){
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const mpeg2_info_t * info = mpeg2_info (mpeg2dec);
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int drop_frame, framedrop=flags&3;
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//MPlayer registers its own draw_slice callback, prevent libmpeg2 from freeing the context
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mpeg2dec->decoder.convert=NULL;
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mpeg2dec->decoder.convert_id=NULL;
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// MPlayer registers its own draw_slice callback, prevent libmpeg2 from freeing the context
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if (mpeg2dec->convert == NULL) {
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mpeg2dec->decoder.convert=NULL;
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mpeg2dec->decoder.convert_id=NULL;
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}
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if(len<=0) return NULL; // skipped null frame
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@ -124,6 +139,9 @@ static mp_image_t* decode(sh_video_t *sh,void* data,int len,int flags){
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while(1){
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int state=mpeg2_parse (mpeg2dec);
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int type, use_callback;
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mp_image_t* mpi_new;
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switch(state){
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case STATE_BUFFER:
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if (mpeg2dec->pending_length) {
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@ -137,13 +155,21 @@ static mp_image_t* decode(sh_video_t *sh,void* data,int len,int flags){
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break;
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case STATE_SEQUENCE:
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// video parameters inited/changed, (re)init libvo:
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if(!mpcodecs_config_vo(sh,
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info->sequence->width,
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info->sequence->height, IMGFMT_YV12)) return 0;
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if (info->sequence->width >> 1 == info->sequence->chroma_width &&
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info->sequence->height >> 1 == info->sequence->chroma_height) {
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if(!mpcodecs_config_vo(sh,
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info->sequence->width,
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info->sequence->height, IMGFMT_YV12)) return 0;
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} else if (info->sequence->width >> 1 == info->sequence->chroma_width &&
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info->sequence->height == info->sequence->chroma_height) {
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if (mpeg2_convert(mpeg2dec, mpeg2convert_uyvy, NULL)) return 0;
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if(!mpcodecs_config_vo(sh,
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info->sequence->width,
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info->sequence->height, IMGFMT_UYVY)) return 0;
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} else return 0;
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break;
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case STATE_PICTURE: {
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int type=info->current_picture->flags&PIC_MASK_CODING_TYPE;
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mp_image_t* mpi_new;
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case STATE_PICTURE:
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type=info->current_picture->flags&PIC_MASK_CODING_TYPE;
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drop_frame = framedrop && (mpeg2dec->decoder.coding_type == B_TYPE);
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drop_frame |= framedrop>=2; // hard drop
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@ -154,15 +180,20 @@ static mp_image_t* decode(sh_video_t *sh,void* data,int len,int flags){
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}
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mpeg2_skip(mpeg2dec, 0); //mpeg2skip skips frames until set again to 0
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if (mpeg2dec->convert == NULL) {
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use_callback = (!framedrop && vd_use_slices &&
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(info->current_picture->flags&PIC_FLAG_PROGRESSIVE_FRAME)) ?
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MP_IMGFLAG_DRAW_CALLBACK:0;
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} else {
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use_callback = 0;
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}
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// get_buffer "callback":
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mpi_new=mpcodecs_get_image(sh,MP_IMGTYPE_IPB,
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(type==PIC_FLAG_CODING_TYPE_B)
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? ((!framedrop && vd_use_slices &&
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(info->current_picture->flags&PIC_FLAG_PROGRESSIVE_FRAME)) ?
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MP_IMGFLAG_DRAW_CALLBACK:0)
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: (MP_IMGFLAG_PRESERVE|MP_IMGFLAG_READABLE),
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(info->sequence->picture_width+15)&(~15),
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(info->sequence->picture_height+15)&(~15) );
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mpi_new=mpcodecs_get_image(sh,MP_IMGTYPE_IPB,
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(type==PIC_FLAG_CODING_TYPE_B) ? use_callback : (MP_IMGFLAG_PRESERVE|MP_IMGFLAG_READABLE),
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(info->sequence->picture_width+15)&(~15),
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(info->sequence->picture_height+15)&(~15) );
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if(!mpi_new) return 0; // VO ERROR!!!!!!!!
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mpeg2_set_buf(mpeg2dec, mpi_new->planes, mpi_new);
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if (info->current_picture->flags&PIC_FLAG_TOP_FIELD_FIRST)
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@ -184,15 +215,19 @@ static mp_image_t* decode(sh_video_t *sh,void* data,int len,int flags){
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mpi_new->qscale_type= 1;
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#endif
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if(mpi_new->flags&MP_IMGFLAG_DRAW_CALLBACK &&
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!(mpi_new->flags&MP_IMGFLAG_DIRECT)){
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// nice, filter/vo likes draw_callback :)
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if (mpeg2dec->convert == NULL) {
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if (mpi_new->flags&MP_IMGFLAG_DRAW_CALLBACK
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&& !(mpi_new->flags&MP_IMGFLAG_DIRECT)) {
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// nice, filter/vo likes draw_callback :)
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mpeg2dec->decoder.convert=draw_slice;
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mpeg2dec->decoder.convert_id=sh;
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} else
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} else {
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mpeg2dec->decoder.convert=NULL;
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mpeg2dec->decoder.convert_id=NULL;
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}
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}
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break;
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}
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case STATE_SLICE:
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case STATE_END:
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case STATE_INVALID_END:
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@ -200,9 +235,9 @@ static mp_image_t* decode(sh_video_t *sh,void* data,int len,int flags){
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if(info->display_fbuf) {
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mp_image_t* mpi = info->display_fbuf->id;
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if (mpeg2dec->pending_length == 0) {
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mpeg2dec->pending_length = mpeg2dec->buf_end - mpeg2dec->buf_start;
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mpeg2dec->pending_buffer = realloc(mpeg2dec->pending_buffer, mpeg2dec->pending_length);
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memcpy(mpeg2dec->pending_buffer, mpeg2dec->buf_start, mpeg2dec->pending_length);
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mpeg2dec->pending_length = mpeg2dec->buf_end - mpeg2dec->buf_start;
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mpeg2dec->pending_buffer = realloc(mpeg2dec->pending_buffer, mpeg2dec->pending_length);
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memcpy(mpeg2dec->pending_buffer, mpeg2dec->buf_start, mpeg2dec->pending_length);
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} else {
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// still some data in the pending buffer, shouldn't happen
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mpeg2dec->pending_length = mpeg2dec->buf_end - mpeg2dec->buf_start;
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@ -3,7 +3,7 @@ LIBNAME = libmpeg2.a
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include ../config.mak
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SRCS = alloc.c cpu_accel.c cpu_state.c decode.c header.c idct.c motion_comp.c slice.c
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SRCS = alloc.c cpu_accel.c cpu_state.c decode.c header.c idct.c motion_comp.c slice.c uyvy.c
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OBJS = $(SRCS:.c=.o)
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INCLUDE = -I. -I../libvo -I.. $(EXTRA_INC)
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127
libmpeg2/uyvy.c
Normal file
127
libmpeg2/uyvy.c
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@ -0,0 +1,127 @@
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/*
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* uyvy.c
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* Copyright (C) 2000-2003 Michel Lespinasse <walken@zoy.org>
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* Copyright (C) 2003 Regis Duchesne <hpreg@zoy.org>
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* Copyright (C) 1999-2000 Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
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*
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* This file is part of mpeg2dec, a free MPEG-2 video stream decoder.
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* See http://libmpeg2.sourceforge.net/ for updates.
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*
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* mpeg2dec 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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* mpeg2dec 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
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "config.h"
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#include <inttypes.h>
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#include "mpeg2.h"
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//#include "mpeg2convert.h"
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typedef struct {
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int width;
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int stride;
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int chroma420;
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uint8_t * out;
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} convert_uyvy_t;
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static void uyvy_start (void * _id, const mpeg2_fbuf_t * fbuf,
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const mpeg2_picture_t * picture,
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const mpeg2_gop_t * gop)
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{
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convert_uyvy_t * instance = (convert_uyvy_t *) _id;
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instance->out = fbuf->buf[0];
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instance->stride = instance->width;
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if (picture->nb_fields == 1) {
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if (! (picture->flags & PIC_FLAG_TOP_FIELD_FIRST))
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instance->out += 2 * instance->stride;
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instance->stride <<= 1;
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}
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}
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#ifdef WORDS_BIGENDIAN
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#define PACK(a,b,c,d) (((a) << 24) | ((b) << 16) | ((c) << 8) | (d))
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#else
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#define PACK(a,b,c,d) (((d) << 24) | ((c) << 16) | ((b) << 8) | (a))
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#endif
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static void uyvy_line (uint8_t * py, uint8_t * pu, uint8_t * pv, void * _dst,
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int width)
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{
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uint32_t * dst = (uint32_t *) _dst;
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width >>= 4;
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do {
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dst[0] = PACK (pu[0], py[0], pv[0], py[1]);
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dst[1] = PACK (pu[1], py[2], pv[1], py[3]);
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dst[2] = PACK (pu[2], py[4], pv[2], py[5]);
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dst[3] = PACK (pu[3], py[6], pv[3], py[7]);
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dst[4] = PACK (pu[4], py[8], pv[4], py[9]);
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dst[5] = PACK (pu[5], py[10], pv[5], py[11]);
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dst[6] = PACK (pu[6], py[12], pv[6], py[13]);
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dst[7] = PACK (pu[7], py[14], pv[7], py[15]);
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py += 16;
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pu += 8;
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pv += 8;
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dst += 8;
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} while (--width);
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}
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static void uyvy_copy (void * id, uint8_t * const * src, unsigned int v_offset)
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{
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const convert_uyvy_t * instance = (convert_uyvy_t *) id;
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uint8_t * py;
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uint8_t * pu;
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uint8_t * pv;
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uint8_t * dst;
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int height;
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dst = instance->out + 2 * instance->stride * v_offset;
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py = src[0]; pu = src[1]; pv = src[2];
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height = 16;
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do {
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uyvy_line (py, pu, pv, dst, instance->width);
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dst += 2 * instance->stride;
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py += instance->stride;
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if (! (--height & instance->chroma420)) {
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pu += instance->stride >> 1;
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pv += instance->stride >> 1;
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}
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} while (height);
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}
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int mpeg2convert_uyvy (int stage, void * _id, const mpeg2_sequence_t * seq,
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int stride, uint32_t accel, void * arg,
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mpeg2_convert_init_t * result)
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{
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convert_uyvy_t * instance = (convert_uyvy_t *) _id;
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if (seq->chroma_width == seq->width)
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return 1;
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if (instance) {
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instance->width = seq->width;
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instance->chroma420 = (seq->chroma_height < seq->height);
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result->buf_size[0] = seq->width * seq->height * 2;
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result->buf_size[1] = result->buf_size[2] = 0;
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result->start = uyvy_start;
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result->copy = uyvy_copy;
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} else {
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result->id_size = sizeof (convert_uyvy_t);
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}
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return 0;
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}
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