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#include <stdio.h>
#include <stdlib.h>
#include "config.h"
#include "mp_msg.h"
#include "vd_internal.h"
static vd_info_t info = {
"Quicktime Animation (RLE) decoder",
"qtrle",
"A'rpi",
"Mike Melanson",
"native codec"
};
LIBVD_EXTERN(qtrle)
typedef struct {
int depth;
void *palette;
} vd_qtrle_ctx;
// to set/get/query special features/parameters
static int control(sh_video_t *sh,int cmd,void* arg,...){
vd_qtrle_ctx *ctx = sh->context;
switch(cmd)
{
case VDCTRL_QUERY_FORMAT:
{
int req_format = *((int*)arg);
/* qtrle24 supports 32bit output too */
if ((req_format == (IMGFMT_BGR|ctx->depth)) ||
((IMGFMT_BGR_DEPTH(req_format) == 32) && (ctx->depth == 24)))
return(CONTROL_TRUE);
else
return(CONTROL_FALSE);
}
}
return CONTROL_UNKNOWN;
}
// init driver
static int init(sh_video_t *sh){
vd_qtrle_ctx *ctx;
ctx = sh->context = malloc(sizeof(vd_qtrle_ctx));
if (!ctx)
return(0);
memset(ctx, 0, sizeof(vd_qtrle_ctx));
if (!sh->bih)
return(0);
ctx->depth = sh->bih->biBitCount;
switch(ctx->depth)
{
case 2:
case 4:
case 8:
if (sh->bih->biSize > 40)
{
ctx->palette = malloc(sh->bih->biSize-40);
memcpy(ctx->palette, sh->bih+40, sh->bih->biSize-40);
}
break;
case 16:
ctx->depth--; /* this is the trick ;) */
break;
case 24:
break;
default:
mp_msg(MSGT_DECVIDEO,MSGL_ERR,
"*** FYI: This Quicktime file is using %d-bit RLE Animation\n" \
"encoding, which is not yet supported by MPlayer. But if you upload\n" \
"this Quicktime file to the MPlayer FTP, the team could look at it.\n",
ctx->depth);
return(0);
}
return mpcodecs_config_vo(sh,sh->disp_w,sh->disp_h,IMGFMT_BGR|ctx->depth);
}
// uninit driver
static void uninit(sh_video_t *sh){
vd_qtrle_ctx *ctx = sh->context;
if (ctx->palette)
free(ctx->palette);
free(ctx);
}
//mp_image_t* mpcodecs_get_image(sh_video_t *sh, int mp_imgtype, int mp_imgflag, int w, int h);
void qt_decode_rle(
unsigned char *encoded,
int encoded_size,
unsigned char *decoded,
int width,
int height,
int encoded_bpp,
int bytes_per_pixel);
// decode a frame
static mp_image_t* decode(sh_video_t *sh,void* data,int len,int flags){
vd_qtrle_ctx *ctx = sh->context;
mp_image_t* mpi;
if(len<=0) return NULL; // skipped frame
mpi=mpcodecs_get_image(sh, MP_IMGTYPE_STATIC, MP_IMGFLAG_PRESERVE,
sh->disp_w, sh->disp_h);
if(!mpi) return NULL;
qt_decode_rle(
data,len, mpi->planes[0],
sh->disp_w, sh->disp_h,
sh->bih->biBitCount,
mpi->bpp/8);
if (ctx->palette)
mpi->planes[1] = ctx->palette;
return mpi;
}
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