putvlc.c

来自「实现在linux下的mpeg4编解码」· C语言 代码 · 共 882 行 · 第 1/2 页

			length = coeff_RVLCtab5[run-4][level-1].len;
		}
		else if (run > 5 && run < 8 && level < 6)
		{
			BitstreamPutBits(bitstream, (LInt)coeff_RVLCtab6[run-6][level-1].code,
				(LInt)coeff_RVLCtab6[run-6][level-1].len);

			length = coeff_RVLCtab6[run-6][level-1].len;
		}
		else if (run > 7 && run < 10 && level < 5)
		{
			BitstreamPutBits(bitstream, (LInt)coeff_RVLCtab7[run-8][level-1].code,
				(LInt)coeff_RVLCtab7[run-8][level-1].len);

			length = coeff_RVLCtab7[run-8][level-1].len;
		}
		else if (run > 9 && run < 13 && level < 3)
		{
			BitstreamPutBits(bitstream, (LInt)coeff_RVLCtab8[run-10][level-1].code,
				(LInt)coeff_RVLCtab8[run-10][level-1].len);

			length = coeff_RVLCtab8[run-10][level-1].len;
		}
		else if (run > 12 && run < 20 && level == 1)
		{
			BitstreamPutBits(bitstream, (LInt)coeff_RVLCtab9[run-13].code,
				(LInt)coeff_RVLCtab9[run-13].len);

			length = coeff_RVLCtab9[run-13].len;
		}
	}
	else if (last == 1)
	{
		if (run >= 0 && run < 2 && level < 6)
		{
			BitstreamPutBits(bitstream, (LInt)coeff_RVLCtab10[run][level-1].code,
				(LInt)coeff_RVLCtab10[run][level-1].len);

			length = coeff_RVLCtab10[run][level-1].len;
		}
		else if (run == 2 && level < 4)
		{
			BitstreamPutBits(bitstream, (LInt)coeff_RVLCtab11[level-1].code,
				(LInt)coeff_RVLCtab11[level-1].len);

			length = coeff_RVLCtab11[level-1].len;
		}
		else if (run > 2 && run < 14 && level < 3)
		{
			BitstreamPutBits(bitstream, (LInt)coeff_RVLCtab12[run-3][level-1].code,
				(LInt)coeff_RVLCtab12[run-3][level-1].len);

			length = coeff_RVLCtab12[run-3][level-1].len;
		}
		else if (run > 13 && run < 46 && level == 1)
		{
			BitstreamPutBits(bitstream, (LInt)coeff_RVLCtab13[run-14].code,
				(LInt)coeff_RVLCtab13[run-14].len);

			length = coeff_RVLCtab13[run-14].len;
		}
	}
	return length;
}


/* The following is for 3-mode VLC */

Int
PutRunCoeff_Inter(Int run, Int level, Int last, Image *bitstream)
{
	Int length = 0;

	MOMCHECK (last >= 0 && last < 2);
	MOMCHECK (run >= 0 && run < 64);
	MOMCHECK (level > 0 && level < 128);

	if (last == 0)
	{
		if (run < 2 && level < 13 )
		{
			length = coeff_tab0[run][level-1].len;
			if (length != 0)
			{
												  /* boon 120697 */
				BitstreamPutBits(bitstream, 3L, 7L);
												  /* boon 120697 */
				BitstreamPutBits(bitstream, 2L, 2L);
				length += 9;					  /* boon */
				BitstreamPutBits (bitstream, (LInt)coeff_tab0[run][level-1].code,
					(LInt)coeff_tab0[run][level-1].len);
			}
		}
		else if (run > 1 && run < 27 && level < 5)
		{
			length = coeff_tab1[run-2][level-1].len;
			if (length != 0)
			{
												  /* boon 120697 */
				BitstreamPutBits(bitstream, 3L, 7L);
												  /* boon 120697 */
				BitstreamPutBits(bitstream, 2L, 2L);
				length += 9;					  /* boon */
				BitstreamPutBits (bitstream, (LInt)coeff_tab1[run-2][level-1].code,
					(LInt)coeff_tab1[run-2][level-1].len);
			}
		}
	}
	else if (last == 1)
	{
		if (run < 2 && level < 4)
		{
			length = coeff_tab2[run][level-1].len;
			if (length != 0)
			{
												  /* boon 120697 */
				BitstreamPutBits(bitstream, 3L, 7L);
												  /* boon 120697 */
				BitstreamPutBits(bitstream, 2L, 2L);
				length += 9;					  /* boon */
				BitstreamPutBits (bitstream, (LInt)coeff_tab2[run][level-1].code,
					(LInt)coeff_tab2[run][level-1].len);
			}
		}
		else if (run > 1 && run < 42 && level == 1)
		{
			length = coeff_tab3[run-2].len;
			if (length != 0)
			{
												  /* boon 120697 */
				BitstreamPutBits(bitstream, 3L, 7L);
												  /* boon 120697 */
				BitstreamPutBits(bitstream, 2L, 2L);
				length += 9;					  /* boon */
				BitstreamPutBits (bitstream, (LInt)coeff_tab3[run-2].code,
					(LInt)coeff_tab3[run-2].len);
			}
		}
	}
	return length;
}


Int
PutRunCoeff_Intra(Int run, Int level, Int last, Image *bitstream)
{
	Int length = 0;

	MOMCHECK (last >= 0 && last < 2);
	MOMCHECK (run >= 0 && run < 64);
	MOMCHECK (level > 0 && level < 128);

	if (last == 0)
	{
		if (run == 0 && level < 28 )
		{
			length = coeff_tab4[level-1].len;
			if (length != 0)
			{
												  /* boon 120697 */
				BitstreamPutBits(bitstream, 3L, 7L);
												  /* boon 120697 */
				BitstreamPutBits(bitstream, 2L, 2L);
				length += 9;					  /* boon */
				BitstreamPutBits(bitstream, (LInt)coeff_tab4[level-1].code,
					(LInt)coeff_tab4[level-1].len);
			}
		}
		else if (run == 1 && level < 11)
		{
			length = coeff_tab5[level-1].len;
			if (length != 0)
			{
												  /* boon 120697 */
				BitstreamPutBits(bitstream, 3L, 7L);
												  /* boon 120697 */
				BitstreamPutBits(bitstream, 2L, 2L);
				length += 9;					  /* boon */
				BitstreamPutBits(bitstream, (LInt)coeff_tab5[level-1].code,
					(LInt)coeff_tab5[level-1].len);
			}
		}
		else if (run > 1 && run < 10 && level < 6)
		{
			length = coeff_tab6[run-2][level-1].len;
			if (length != 0)
			{
												  /* boon 120697 */
				BitstreamPutBits(bitstream, 3L, 7L);
												  /* boon 120697 */
				BitstreamPutBits(bitstream, 2L, 2L);
				length += 9;					  /* boon */
				BitstreamPutBits(bitstream, (LInt)coeff_tab6[run-2][level-1].code,
					(LInt)coeff_tab6[run-2][level-1].len);
			}
		}
		else if (run > 9 && run < 15 && level == 1)
		{
			length = coeff_tab7[run-10].len;
			if (length != 0)
			{
												  /* boon 120697 */
				BitstreamPutBits(bitstream, 3L, 7L);
												  /* boon 120697 */
				BitstreamPutBits(bitstream, 2L, 2L);
				length += 9;					  /* boon */
				BitstreamPutBits(bitstream, (LInt)coeff_tab7[run-10].code,
					(LInt)coeff_tab7[run-10].len);
			}
		}
	}
	else if (last == 1)
	{
		if (run == 0 && level < 9)
		{
			length = coeff_tab8[level-1].len;
			if (length != 0)
			{
												  /* boon 120697 */
				BitstreamPutBits(bitstream, 3L, 7L);
												  /* boon 120697 */
				BitstreamPutBits(bitstream, 2L, 2L);
				length += 9;					  /* boon */
				BitstreamPutBits(bitstream, (LInt)coeff_tab8[level-1].code,
					(LInt)coeff_tab8[level-1].len);
			}
		}
		else if (run > 0 && run < 7 && level < 4)
		{
			length = coeff_tab9[run-1][level-1].len;
			if (length != 0)
			{
												  /* boon 120697 */
				BitstreamPutBits(bitstream, 3L, 7L);
												  /* boon 120697 */
				BitstreamPutBits(bitstream, 2L, 2L);
				length += 9;					  /* boon */
				BitstreamPutBits(bitstream, (LInt)coeff_tab9[run-1][level-1].code,
					(LInt)coeff_tab9[run-1][level-1].len);
			}
		}
		else if (run > 6 && run < 21 && level == 1)
		{
			length = coeff_tab10[run-7].len;
			if (length != 0)
			{
												  /* boon 120697 */
				BitstreamPutBits(bitstream, 3L, 7L);
												  /* boon 120697 */
				BitstreamPutBits(bitstream, 2L, 2L);
				length += 9;					  /* boon */
				BitstreamPutBits(bitstream, (LInt)coeff_tab10[run-7].code,
					(LInt)coeff_tab10[run-7].len);
			}
		}
	}
	return length;
}


Int
PutLevelCoeff_Inter(Int run, Int level, Int last, Image *bitstream)
{
	Int length = 0;

	MOMCHECK (last >= 0 && last < 2);
	MOMCHECK (run >= 0 && run < 64);
	MOMCHECK (level > 0 && level < 128);

	if (last == 0)
	{
		if (run < 2 && level < 13 )
		{
			length = coeff_tab0[run][level-1].len;
			if (length != 0)
			{
				BitstreamPutBits(bitstream, 3L, 7L);
												  /* boon19970701 */
				BitstreamPutBits(bitstream, 0L, 1L);
				length += 8;					  /* boon */
				BitstreamPutBits (bitstream, (LInt)coeff_tab0[run][level-1].code,
					(LInt)coeff_tab0[run][level-1].len);
			}
		}
		else if (run > 1 && run < 27 && level < 5)
		{
			length = coeff_tab1[run-2][level-1].len;
			if (length != 0)
			{
				BitstreamPutBits(bitstream, 3L, 7L);
												  /* boon19970701 */
				BitstreamPutBits(bitstream, 0L, 1L);
				length += 8;					  /* boon */
				BitstreamPutBits (bitstream, (LInt)coeff_tab1[run-2][level-1].code,
					(LInt)coeff_tab1[run-2][level-1].len);
			}
		}
	}
	else if (last == 1)
	{
		if (run < 2 && level < 4)
		{
			length = coeff_tab2[run][level-1].len;
			if (length != 0)
			{
				BitstreamPutBits(bitstream, 3L, 7L);
												  /* boon19970701 */
				BitstreamPutBits(bitstream, 0L, 1L);
				length += 8;					  /* boon */
				BitstreamPutBits (bitstream, (LInt)coeff_tab2[run][level-1].code,
					(LInt)coeff_tab2[run][level-1].len);
			}
		}
		else if (run > 1 && run < 42 && level == 1)
		{
			length = coeff_tab3[run-2].len;
			if (length != 0)
			{
				BitstreamPutBits(bitstream, 3L, 7L);
												  /* boon19970701 */
				BitstreamPutBits(bitstream, 0L, 1L);
				length += 8;					  /* boon */
				BitstreamPutBits (bitstream, (LInt)coeff_tab3[run-2].code,
					(LInt)coeff_tab3[run-2].len);
			}
		}
	}
	return length;
}


Int
PutLevelCoeff_Intra(Int run, Int level, Int last, Image *bitstream)
{
	Int length = 0;

	MOMCHECK (last >= 0 && last < 2);
	MOMCHECK (run >= 0 && run < 64);
	MOMCHECK (level > 0 && level < 128);

	if (last == 0)
	{
		if (run == 0 && level < 28 )
		{
			length = coeff_tab4[level-1].len;
			if (length != 0)
			{
				BitstreamPutBits(bitstream, 3L, 7L);
												  /* boon19970701 */
				BitstreamPutBits(bitstream, 0L, 1L);
				length += 8;					  /* boon */
				BitstreamPutBits(bitstream, (LInt)coeff_tab4[level-1].code,
					(LInt)coeff_tab4[level-1].len);
			}
		}
		else if (run == 1 && level < 11)
		{
			length = coeff_tab5[level-1].len;
			if (length != 0)
			{
				BitstreamPutBits(bitstream, 3L, 7L);
												  /* boon19970701 */
				BitstreamPutBits(bitstream, 0L, 1L);
				length += 8;					  /* boon */
				BitstreamPutBits(bitstream, (LInt)coeff_tab5[level-1].code,
					(LInt)coeff_tab5[level-1].len);
			}
		}
		else if (run > 1 && run < 10 && level < 6)
		{
			length = coeff_tab6[run-2][level-1].len;
			if (length != 0)
			{
				BitstreamPutBits(bitstream, 3L, 7L);
												  /* boon19970701 */
				BitstreamPutBits(bitstream, 0L, 1L);
				length += 8;					  /* boon */
				BitstreamPutBits(bitstream, (LInt)coeff_tab6[run-2][level-1].code,
					(LInt)coeff_tab6[run-2][level-1].len);
			}
		}
		else if (run > 9 && run < 15 && level == 1)
		{
			length = coeff_tab7[run-10].len;
			if (length != 0)
			{
				BitstreamPutBits(bitstream, 3L, 7L);
												  /* boon19970701 */
				BitstreamPutBits(bitstream, 0L, 1L);
				length += 8;					  /* boon */
				BitstreamPutBits(bitstream, (LInt)coeff_tab7[run-10].code,
					(LInt)coeff_tab7[run-10].len);
			}
		}
	}
	else if (last == 1)
	{
		if (run == 0 && level < 9)
		{
			length = coeff_tab8[level-1].len;
			if (length != 0)
			{
				BitstreamPutBits(bitstream, 3L, 7L);
												  /* boon19970701 */
				BitstreamPutBits(bitstream, 0L, 1L);
				length += 8;					  /* boon */
				BitstreamPutBits(bitstream, (LInt)coeff_tab8[level-1].code,
					(LInt)coeff_tab8[level-1].len);
			}
		}
		else if (run > 0 && run < 7 && level < 4)
		{
			length = coeff_tab9[run-1][level-1].len;
			if (length != 0)
			{
				BitstreamPutBits(bitstream, 3L, 7L);
												  /* boon19970701 */
				BitstreamPutBits(bitstream, 0L, 1L);
				length += 8;					  /* boon */
				BitstreamPutBits(bitstream, (LInt)coeff_tab9[run-1][level-1].code,
					(LInt)coeff_tab9[run-1][level-1].len);
			}
		}
		else if (run > 6 && run < 21 && level == 1)
		{
			length = coeff_tab10[run-7].len;
			if (length != 0)
			{
				BitstreamPutBits(bitstream, 3L, 7L);
												  /* boon19970701 */
				BitstreamPutBits(bitstream, 0L, 1L);
				length += 8;					  /* boon */
				BitstreamPutBits(bitstream, (LInt)coeff_tab10[run-7].code,
					(LInt)coeff_tab10[run-7].len);
			}
		}
	}
	return length;
}