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mpv/libmpcodecs/vd_libmpeg2.c
Uoti Urpala b0986b3760 Merge svn changes up to r30463 
Note that r30455 is wrong, that commit does not in fact change the
default behavior as claimed in the commit message. It only breaks
"-af-adv force=0", which was already pretty much useless though.
2010-03-09 18:59:15 +02:00

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/*
* This file is part of MPlayer.
*
* MPlayer is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* MPlayer is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with MPlayer; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <stdio.h>
#include <stdlib.h>
#include "config.h"
#include "options.h"
#include "mp_msg.h"
#include "vd_internal.h"
//#undef MPEG12_POSTPROC
static const vd_info_t info =
{
"libmpeg2 MPEG 1/2 Video decoder",
"libmpeg2",
"A'rpi & Fabian Franz",
"Aaron & Walken",
"native"
};
LIBVD_EXTERN(libmpeg2)
//#include "libvo/video_out.h" // FIXME!!!
#include "libmpeg2/mpeg2.h"
#include "libmpeg2/attributes.h"
#include "libmpeg2/mpeg2_internal.h"
#include "cpudetect.h"
typedef struct {
mpeg2dec_t *mpeg2dec;
int quant_store_idx;
char *quant_store[3];
int imgfmt;
int width;
int height;
double aspect;
} vd_libmpeg2_ctx_t;
// to set/get/query special features/parameters
static int control(sh_video_t *sh,int cmd,void* arg,...){
vd_libmpeg2_ctx_t *context = sh->context;
mpeg2dec_t * mpeg2dec = context->mpeg2dec;
const mpeg2_info_t * info = mpeg2_info (mpeg2dec);
switch(cmd) {
case VDCTRL_QUERY_FORMAT:
if (info->sequence->width >> 1 == info->sequence->chroma_width &&
info->sequence->height >> 1 == info->sequence->chroma_height &&
(*((int*)arg)) == IMGFMT_YV12)
return CONTROL_TRUE;
if (info->sequence->width >> 1 == info->sequence->chroma_width &&
info->sequence->height == info->sequence->chroma_height &&
(*((int*)arg)) == IMGFMT_422P)
return CONTROL_TRUE;
return CONTROL_FALSE;
}
return CONTROL_UNKNOWN;
}
// init driver
static int init(sh_video_t *sh){
vd_libmpeg2_ctx_t *context;
mpeg2dec_t * mpeg2dec;
// const mpeg2_info_t * info;
int accel;
accel = 0;
if(gCpuCaps.hasMMX)
accel |= MPEG2_ACCEL_X86_MMX;
if(gCpuCaps.hasMMX2)
accel |= MPEG2_ACCEL_X86_MMXEXT;
if(gCpuCaps.has3DNow)
accel |= MPEG2_ACCEL_X86_3DNOW;
if(gCpuCaps.hasSSE2)
accel |= MPEG2_ACCEL_X86_SSE2;
if(gCpuCaps.hasAltiVec)
accel |= MPEG2_ACCEL_PPC_ALTIVEC;
#if ARCH_ALPHA
accel |= MPEG2_ACCEL_ALPHA;
#elif ARCH_ARM
accel |= MPEG2_ACCEL_ARM;
#endif
#if HAVE_MVI
accel |= MPEG2_ACCEL_ALPHA_MVI;
#elif HAVE_VIS
accel |= MPEG2_ACCEL_SPARC_VIS;
#endif
mpeg2_accel(accel);
mpeg2dec = mpeg2_init ();
if(!mpeg2dec) return 0;
mpeg2_custom_fbuf(mpeg2dec,1); // enable DR1
context = calloc(1, sizeof(vd_libmpeg2_ctx_t));
context->mpeg2dec = mpeg2dec;
sh->context = context;
mpeg2dec->pending_buffer = 0;
mpeg2dec->pending_length = 0;
return 1;
}
// uninit driver
static void uninit(sh_video_t *sh){
int i;
vd_libmpeg2_ctx_t *context = sh->context;
mpeg2dec_t * mpeg2dec = context->mpeg2dec;
if (mpeg2dec->pending_buffer) free(mpeg2dec->pending_buffer);
mpeg2dec->decoder.convert=NULL;
mpeg2dec->decoder.convert_id=NULL;
mpeg2_close (mpeg2dec);
for (i=0; i < 3; i++)
free(context->quant_store[i]);
free(sh->context);
}
static void draw_slice (void * _sh, uint8_t * const * src, unsigned int y){
sh_video_t* sh = (sh_video_t*) _sh;
vd_libmpeg2_ctx_t *context = sh->context;
mpeg2dec_t* mpeg2dec = context->mpeg2dec;
const mpeg2_info_t * info = mpeg2_info (mpeg2dec);
int stride[MP_MAX_PLANES] = {mpeg2dec->decoder.stride, mpeg2dec->decoder.uv_stride, mpeg2dec->decoder.uv_stride};
uint8_t *srcs[MP_MAX_PLANES] = {src[0], src[1], src[2]};
// printf("draw_slice() y=%d \n",y);
mpcodecs_draw_slice(sh, srcs,
stride, info->sequence->picture_width,
(y+16<=info->sequence->picture_height) ? 16 :
info->sequence->picture_height-y,
0, y);
}
// decode a frame
static mp_image_t* decode(sh_video_t *sh,void* data,int len,int flags){
vd_libmpeg2_ctx_t *context = sh->context;
mpeg2dec_t * mpeg2dec = context->mpeg2dec;
const mpeg2_info_t * info = mpeg2_info (mpeg2dec);
int drop_frame, framedrop=flags&3;
// MPlayer registers its own draw_slice callback, prevent libmpeg2 from freeing the context
mpeg2dec->decoder.convert=NULL;
mpeg2dec->decoder.convert_id=NULL;
if(len<=0) return NULL; // skipped null frame
// append extra 'end of frame' code:
((char*)data+len)[0]=0;
((char*)data+len)[1]=0;
((char*)data+len)[2]=1;
((char*)data+len)[3]=0xff;
len+=4;
if (mpeg2dec->pending_length) {
mpeg2_buffer (mpeg2dec, mpeg2dec->pending_buffer, mpeg2dec->pending_buffer + mpeg2dec->pending_length);
} else {
mpeg2_buffer (mpeg2dec, data, (uint8_t *)data+len);
}
while(1){
int state=mpeg2_parse (mpeg2dec);
int type, use_callback;
mp_image_t* mpi_new;
unsigned long pw, ph;
int imgfmt;
switch(state){
case STATE_BUFFER:
if (mpeg2dec->pending_length) {
// just finished the pending data, continue with processing of the passed buffer
mpeg2dec->pending_length = 0;
mpeg2_buffer (mpeg2dec, data, (uint8_t *)data+len);
} else {
// parsing of the passed buffer finished, return.
return 0;
}
break;
case STATE_SEQUENCE:
pw = info->sequence->display_width * info->sequence->pixel_width;
ph = info->sequence->display_height * info->sequence->pixel_height;
if(ph) sh->aspect = (float) pw / (float) ph;
// video parameters initialized/changed, (re)init libvo:
if (info->sequence->width >> 1 == info->sequence->chroma_width &&
info->sequence->height >> 1 == info->sequence->chroma_height) {
imgfmt = IMGFMT_YV12;
} else if (info->sequence->width >> 1 == info->sequence->chroma_width &&
info->sequence->height == info->sequence->chroma_height) {
imgfmt = IMGFMT_422P;
} else return 0;
if (imgfmt == context->imgfmt &&
info->sequence->picture_width == context->width &&
info->sequence->picture_height == context->height &&
sh->aspect == context->aspect)
break;
if(!mpcodecs_config_vo(sh,
info->sequence->picture_width,
info->sequence->picture_height, imgfmt))
return 0;
context->imgfmt = imgfmt;
context->width = info->sequence->picture_width;
context->height = info->sequence->picture_height;
context->aspect = sh->aspect;
break;
case STATE_PICTURE:
type=info->current_picture->flags&PIC_MASK_CODING_TYPE;
drop_frame = framedrop && (mpeg2dec->decoder.coding_type == B_TYPE);
drop_frame |= framedrop>=2; // hard drop
if (drop_frame) {
mpeg2_skip(mpeg2dec, 1);
//printf("Dropping Frame ...\n");
break;
}
mpeg2_skip(mpeg2dec, 0); //mpeg2skip skips frames until set again to 0
use_callback = (!framedrop && sh->opts->vd_use_slices &&
(info->current_picture->flags&PIC_FLAG_PROGRESSIVE_FRAME)) ?
MP_IMGFLAG_DRAW_CALLBACK:0;
// get_buffer "callback":
mpi_new=mpcodecs_get_image(sh,MP_IMGTYPE_IPB,
(type==PIC_FLAG_CODING_TYPE_B) ?
use_callback : (MP_IMGFLAG_PRESERVE|MP_IMGFLAG_READABLE),
info->sequence->width,
info->sequence->height);
if(!mpi_new) return 0; // VO ERROR!!!!!!!!
mpeg2_set_buf(mpeg2dec, mpi_new->planes, mpi_new);
mpi_new->stride[0] = info->sequence->width;
mpi_new->stride[1] = info->sequence->chroma_width;
mpi_new->stride[2] = info->sequence->chroma_width;
if (info->current_picture->flags&PIC_FLAG_TOP_FIELD_FIRST)
mpi_new->fields |= MP_IMGFIELD_TOP_FIRST;
else mpi_new->fields &= ~MP_IMGFIELD_TOP_FIRST;
if (info->current_picture->flags&PIC_FLAG_REPEAT_FIRST_FIELD)
mpi_new->fields |= MP_IMGFIELD_REPEAT_FIRST;
else mpi_new->fields &= ~MP_IMGFIELD_REPEAT_FIRST;
mpi_new->fields |= MP_IMGFIELD_ORDERED;
if (!(info->current_picture->flags&PIC_FLAG_PROGRESSIVE_FRAME))
mpi_new->fields |= MP_IMGFIELD_INTERLACED;
#ifdef MPEG12_POSTPROC
mpi_new->qstride=info->sequence->width>>4;
{
char **p = &context->quant_store[type==PIC_FLAG_CODING_TYPE_B ?
2 : (context->quant_store_idx ^= 1)];
*p = realloc(*p, mpi_new->qstride*(info->sequence->height>>4));
mpi_new->qscale = *p;
}
mpeg2dec->decoder.quant_store=mpi_new->qscale;
mpeg2dec->decoder.quant_stride=mpi_new->qstride;
mpi_new->pict_type=type; // 1->I, 2->P, 3->B
mpi_new->qscale_type= 1;
#endif
if (mpi_new->flags&MP_IMGFLAG_DRAW_CALLBACK
&& !(mpi_new->flags&MP_IMGFLAG_DIRECT)) {
// nice, filter/vo likes draw_callback :)
mpeg2dec->decoder.convert=draw_slice;
mpeg2dec->decoder.convert_id=sh;
} else {
mpeg2dec->decoder.convert=NULL;
mpeg2dec->decoder.convert_id=NULL;
}
break;
case STATE_SLICE:
case STATE_END:
case STATE_INVALID_END:
// decoding done:
if(info->display_fbuf) {
mp_image_t* mpi = info->display_fbuf->id;
if (mpeg2dec->pending_length == 0) {
mpeg2dec->pending_length = mpeg2dec->buf_end - mpeg2dec->buf_start;
mpeg2dec->pending_buffer = realloc(mpeg2dec->pending_buffer, mpeg2dec->pending_length);
memcpy(mpeg2dec->pending_buffer, mpeg2dec->buf_start, mpeg2dec->pending_length);
} else {
// still some data in the pending buffer, shouldn't happen
mpeg2dec->pending_length = mpeg2dec->buf_end - mpeg2dec->buf_start;
memmove(mpeg2dec->pending_buffer, mpeg2dec->buf_start, mpeg2dec->pending_length);
mpeg2dec->pending_buffer = realloc(mpeg2dec->pending_buffer, mpeg2dec->pending_length + len);
memcpy(mpeg2dec->pending_buffer+mpeg2dec->pending_length, data, len);
mpeg2dec->pending_length += len;
}
// fprintf(stderr, "pending = %d\n", mpeg2dec->pending_length);
return mpi;
}
}
}
}
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