mpng, libmpeg2 added, none of them finished :(

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@4999 b3059339-0415-0410-9bf9-f77b7e298cf2

1 files changed, 145 insertions, 0 deletions

diff --git a/libmpcodecs/vd_mpng.c b/libmpcodecs/vd_mpng.c
new file mode 100644
index 0000000000..e7adb81517
--- /dev/null
+++ b/libmpcodecs/vd_mpng.c
@@ -0,0 +1,145 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "config.h"
+#include "mp_msg.h"
+
+#ifdef HAVE_PNG
+
+#include <png.h>
+
+#include "bswap.h"
+#include "postproc/rgb2rgb.h"
+#include "libvo/fastmemcpy.h"
+
+#include "vd_internal.h"
+
+static vd_info_t info = {
+	"PNG Images decoder",
+	"mpng",
+	VFM_MPNG,
+	"A'rpi",
+	".so, based on mpng.c",
+	"uses libpng, 8bpp modes not supported yet"
+};
+
+LIBVD_EXTERN(mpng)
+
+static unsigned int out_fmt=0;
+
+static int last_w=-1;
+static int last_h=-1;
+static int last_c=-1;
+
+// to set/get/query special features/parameters
+static int control(sh_video_t *sh,int cmd,void* arg,...){
+    return CONTROL_UNKNOWN;
+}
+
+// init driver
+static int init(sh_video_t *sh){
+    last_w=-1;
+    return 1;
+}
+
+// uninit driver
+static void uninit(sh_video_t *sh){
+}
+
+//mp_image_t* mpcodecs_get_image(sh_video_t *sh, int mp_imgtype, int mp_imgflag, int w, int h);
+
+static int    pngPointer;
+static int    pngLength;
+
+static void pngReadFN( png_structp pngstr,png_bytep buffer,png_size_t size )
+{
+ char * p = pngstr->io_ptr;
+ if(size>pngLength-pngPointer && pngLength>=pngPointer) size=pngLength-pngPointer;
+ memcpy( buffer,(char *)&p[pngPointer],size );
+ pngPointer+=size;
+}
+
+// decode a frame
+static mp_image_t* decode(sh_video_t *sh,void* data,int len,int flags){
+    png_structp     png;
+    png_infop       info;
+    png_infop       endinfo;
+//    png_bytep       data;
+    png_bytep     * row_p;
+    png_uint_32     png_width=0,png_height=0;
+    char	  * palette = NULL;
+    int             depth,color;
+    png_uint_32     i;
+    mp_image_t* mpi;
+
+    if(len<=0) return NULL; // skipped frame
+    
+ png=png_create_read_struct( PNG_LIBPNG_VER_STRING,NULL,NULL,NULL );
+ info=png_create_info_struct( png );
+ endinfo=png_create_info_struct( png );
+
+ pngPointer=8;
+ pngLength=len;
+ png_set_read_fn( png,data,pngReadFN );
+ png_set_sig_bytes( png,8 );
+ png_read_info( png,info );
+ png_get_IHDR( png,info,&png_width,&png_height,&depth,&color,NULL,NULL,NULL );
+
+ png_set_bgr( png );
+
+ switch( info->color_type ) {
+   case PNG_COLOR_TYPE_GRAY_ALPHA:
+      mp_msg( MSGT_DECVIDEO,MSGL_INFO,"Sorry gray scaled png with alpha channel not supported at moment.\n" );
+      break;
+   case PNG_COLOR_TYPE_GRAY:
+   case PNG_COLOR_TYPE_PALETTE:
+      out_fmt=IMGFMT_BGR8;
+      break;
+   case PNG_COLOR_TYPE_RGB_ALPHA:
+      out_fmt=IMGFMT_BGR32;
+      break;
+   case PNG_COLOR_TYPE_RGB:
+      out_fmt=IMGFMT_BGR24;
+      break;
+   default:
+      mp_msg( MSGT_DECVIDEO,MSGL_INFO,"Sorry, unsupported PNG colorspace: %d.\n" ,info->color_type);
+ }
+
+ // (re)init libvo if image parameters changed (width/height/colorspace)
+ if(last_w!=png_width || last_h!=png_height || last_c!=out_fmt){
+    last_w=png_width; last_h=png_height; last_c=out_fmt;
+    if(!out_fmt) return NULL;
+    mpcodecs_config_vo(sh,png_width,png_height,out_fmt);
+ }
+
+#if 0
+ switch( info->color_type )
+  {
+   case PNG_COLOR_TYPE_GRAY_ALPHA: printf( "[png] used GrayA -> stripping alpha channel\n" ); break;
+   case PNG_COLOR_TYPE_GRAY:       printf( "[png] used Gray -> rgb\n" ); break;
+   case PNG_COLOR_TYPE_PALETTE:    printf( "[png] used palette -> rgb\n" ); break;
+   case PNG_COLOR_TYPE_RGB_ALPHA:  printf( "[png] used RGBA -> stripping alpha channel\n" ); break;
+   case PNG_COLOR_TYPE_RGB:        printf( "[png] read rgb datas.\n" ); break;
+  }
+#endif
+
+    mpi=mpcodecs_get_image(sh, MP_IMGTYPE_TEMP, MP_IMGFLAG_ACCEPT_STRIDE, 
+	png_width,png_height);
+    if(!mpi) return NULL;
+
+// Let's DECODE!
+ row_p=(png_bytep*)malloc( sizeof( png_bytep ) * png_height );
+//png_get_rowbytes( png,info ) 
+ for ( i=0; i < png_height; i++ ) row_p[i]=mpi->planes[0] + mpi->stride[0]*i;
+ png_read_image( png,row_p );
+ free( row_p );
+ 
+ //png_get_PLTE( png,info,(png_colorp*)&pal,&cols );
+ 
+ png_read_end( png,endinfo );
+ png_destroy_read_struct( &png,&info,&endinfo );
+
+    return mpi;
+}
+
+#endif