added stripped down decoder library (no seeking support) and simplified player (no pause or seeking)

git-svn-id: svn://svn.icculus.org/twilight/trunk/dpvideo@2076 d7cf8633-e32d-0410-b094-e92efae38249

Author: ladyhavoc

dpvdecode.c

@@ -552,10 +552,22 @@ static int dpvdecode_convertpixels(dpvdecodestream_t *s, void *imagedata, int im
 		for (y = 0;y < height;y++)
 		{
 			outrow = (void *)((unsigned char *)imagedata + y * imagebytesperrow);
-			for (x = 0;x < width;x++)
+			if (Rloss == 19 && Gloss == 10 && Bloss == 3 && Rshift == 11 && Gshift == 5 && Bshift == 0)
 			{
-				a = *in++;
-				outrow[x] = (((a >> Rloss) & Rmask) << Rshift) | (((a >> Gloss) & Gmask) << Gshift) | (((a >> Bloss) & Bmask) << Bshift);
+				// optimized
+				for (x = 0;x < width;x++)
+				{
+					a = *in++;
+					outrow[x] = ((a >> 8) & 0xF800) | ((a >> 5) & 0x07E0) | ((a >> 3) & 0x001F);
+				}
+			}
+			else
+			{
+				for (x = 0;x < width;x++)
+				{
+					a = *in++;
+					outrow[x] = (((a >> Rloss) & Rmask) << Rshift) | (((a >> Gloss) & Gmask) << Gshift) | (((a >> Bloss) & Bmask) << Bshift);
+				}
 			}
 		}
 	}

dpvdecode.h

@@ -49,16 +49,6 @@ unsigned int dpvdecode_getsoundrate(void *stream);
 // returns the framerate of the stream
 double dpvdecode_getframerate(void *stream);
 
-// returns a recommended sound buffer length (in samples)
-// for decoding a single frame of this stream
-unsigned int dpvdecode_getneededsoundbufferlength(void *stream);
-
-// decodes a frame, both video and audio, to the supplied buffers
-// can produce many different possible errors
-// (such as too little space in supplied sound buffer)
-// (note: sound is 16bit stereo native-endian, left channel first)
-//int dpvdecode_frame(void *stream, int framenum, void *imagedata, unsigned int Rmask, unsigned int Gmask, unsigned int Bmask, unsigned int bytesperpixel, int imagebytesperrow, short *sounddata, unsigned int soundbufferlength, unsigned int *soundlength);
-
 // decodes a video frame to the supplied output pixels
 int dpvdecode_video(void *stream, int framenum, void *imagedata, unsigned int Rmask, unsigned int Gmask, unsigned int Bmask, unsigned int bytesperpixel, int imagebytesperrow);
 // reads some sound