Method lame_encode_mp3_frame

src/main/java/mp3/Encoder.java:385–652

(final LameGlobalFlags gfp,
			final float[] inbuf_l, final float[] inbuf_r, byte[] mp3buf,
			int mp3bufPos, int mp3buf_size)

			0.10091f * 5, 0.151365f * 5, 0.187098f * 5 };

	public final int lame_encode_mp3_frame(final LameGlobalFlags gfp,
			final float[] inbuf_l, final float[] inbuf_r, byte[] mp3buf,
			int mp3bufPos, int mp3buf_size) {
		int mp3count;
		III_psy_ratio masking_LR[][] = new III_psy_ratio[2][2]; /*
																 * LR masking &
																 * energy
																 */
		masking_LR[0][0] = new III_psy_ratio();
		masking_LR[0][1] = new III_psy_ratio();
		masking_LR[1][0] = new III_psy_ratio();
		masking_LR[1][1] = new III_psy_ratio();
		III_psy_ratio masking_MS[][] = new III_psy_ratio[2][2];
		/* MS masking & energy */
		masking_MS[0][0] = new III_psy_ratio();
		masking_MS[0][1] = new III_psy_ratio();
		masking_MS[1][0] = new III_psy_ratio();
		masking_MS[1][1] = new III_psy_ratio();
		III_psy_ratio masking[][];
		/* pointer to selected maskings */
		final float[] inbuf[] = new float[2][];
		final LameInternalFlags gfc = gfp.internal_flags;

		float tot_ener[][] = new float[2][4];
		float ms_ener_ratio[] = { .5f, .5f };
		float[][] pe = { { 0.f, 0.f }, { 0.f, 0.f } }, pe_MS = { { 0.f, 0.f },
				{ 0.f, 0.f } };
		float[][] pe_use;

		int ch, gr;

		inbuf[0] = inbuf_l;
		inbuf[1] = inbuf_r;

		if (gfc.lame_encode_frame_init == 0) {
			/* first run? */
			lame_encode_frame_init(gfp, inbuf);

		}

		/********************** padding *****************************/
		/**
		 * <PRE>
		 * padding method as described in 
		 * "MPEG-Layer3 / Bitstream Syntax and Decoding"
		 * by Martin Sieler, Ralph Sperschneider
		 * 
		 * note: there is no padding for the very first frame
		 * 
		 * Robert Hegemann 2000-06-22
		 * </PRE>
		 */
		gfc.padding = 0;
		if ((gfc.slot_lag -= gfc.frac_SpF) < 0) {
			gfc.slot_lag += gfp.out_samplerate;
			gfc.padding = 1;
		}