rfc9924v3.txt		rfc9924.txt
	skipping to change at line 374 ¶		skipping to change at line 374 ¶
	sum (i=x, y, f(i))		sum (i=x, y, f(i))
	a summation of f(i) with i taking all integer values from x up to		a summation of f(i) with i taking all integer values from x up to
	and including y		and including y
	log2(x)		log2(x)
	the base-2 logarithm of x		the base-2 logarithm of x
	3.2.2. Bitwise Operators		3.2.2. Bitwise Operators
	& (bit-wise "and")		& (bitwise "and")
	When operating on integer arguments, operates on a two's		When operating on integer arguments, operates on a two's
	complement representation of the integer value. When operating on		complement representation of the integer value. When operating on
	arguments with unequal bit depths, the bit depths are equalized by		arguments with unequal bit depths, the bit depths are equalized by
	adding zeros in significant positions to the argument with lower		adding zeros in significant positions to the argument with lower
	bit depth.		bit depth.
	| (bit-wise "or")		| (bitwise "or")
	When operating on integer arguments, operates on a two's		When operating on integer arguments, operates on a two's
	complement representation of the integer value. When operating on		complement representation of the integer value. When operating on
	arguments with unequal bit depths, the bit depths are equalized by		arguments with unequal bit depths, the bit depths are equalized by
	adding zeros in significant positions to the argument with lower		adding zeros in significant positions to the argument with lower
	bit depth.		bit depth.
	x >> y		x >> y
	arithmetic right shift of a two's complement integer		arithmetic right shift of a two's complement integer
	representation of x by y binary digits. This function is defined		representation of x by y binary digits. This function is defined
	only for non-negative integer values of y. Bits shifted into the		only for non-negative integer values of y. Bits shifted into the
	skipping to change at line 791 ¶		skipping to change at line 791 ¶
	x = max(0, line - (blkHeight - 1))		x = max(0, line - (blkHeight - 1))
	while(y >= 0 && x < blkWidth){		while(y >= 0 && x < blkWidth){
	zigZagScan[pos] = y * blkWidth + x		zigZagScan[pos] = y * blkWidth + x
	pos++		pos++
	x++		x++
	y--		y--
	}		}
	}		}
	}		}
	Figure 5: Pseudo-code for zig-zag scan		Figure 5: Pseudocode for zig-zag scan
	4.4.2. Inverse Scan		4.4.2. Inverse Scan
	Inputs to this process are:		Inputs to this process are:
	* a variable blkWidth specifying the width of a block, and		* a variable blkWidth specifying the width of a block, and
	* a variable blkHeight specifying the height of a block.		* a variable blkHeight specifying the height of a block.
	Output of this process is the array inverseScan[rPos].		Output of this process is the array inverseScan[rPos].
	skipping to change at line 817 ¶		skipping to change at line 817 ¶
	* The variable forwardScan is derived by invoking the zig-zag scan		* The variable forwardScan is derived by invoking the zig-zag scan
	order initialization process as specified in Section 4.4.1 with		order initialization process as specified in Section 4.4.1 with
	input parameters blkWidth and blkHeight.		input parameters blkWidth and blkHeight.
	* The output variable inverseScan is derived as follows:		* The output variable inverseScan is derived as follows:
	for(pos = 0; pos < blkWidth * blkHeight; pos++){		for(pos = 0; pos < blkWidth * blkHeight; pos++){
	inverseScan[forwardScan[pos]] = pos		inverseScan[forwardScan[pos]] = pos
	}		}
	Figure 6: Pseudo-code for inverse zig-zag scan		Figure 6: Pseudocode for inverse zig-zag scan
	5. Syntax and Semantics		5. Syntax and Semantics
	5.1. Method of Specifying Syntax		5.1. Method of Specifying Syntax
	The syntax tables specify a superset of the syntax of all allowed		The syntax tables specify a superset of the syntax of all allowed
	bitstreams. Note that a decoder MUST implement some means for		bitstreams. Note that a decoder MUST implement some means for
	identifying entry points into the bitstream and some means to		identifying entry points into the bitstream and some means to
	identify and handle non-conforming bitstreams. The methods for		identify and handle non-conforming bitstreams. The methods for
	identifying and handling errors and other such situations are not		identifying and handling errors and other such situations are not
	skipping to change at line 2663 ¶		skipping to change at line 2663 ¶
	9.4.2. Limits of Levels and Bands		9.4.2. Limits of Levels and Bands
	Table 4 specifies the limits for each level of each band. A level to		Table 4 specifies the limits for each level of each band. A level to
	which a coded frame conforms is indicated by the syntax elements		which a coded frame conforms is indicated by the syntax elements
	level_idc and band_idc as follows:		level_idc and band_idc as follows:
	* level_idc MUST be set equal to a value of 30 times the level		* level_idc MUST be set equal to a value of 30 times the level
	number specified in Table 4.		number specified in Table 4.
	+=======+===================+=====================================+		+=======+==================+=====================================+
	| level | Max luma sample | Max coded data rate (Mbits/sec) |		| level | Max luma sample | Max coded data rate (Mbit/s) |
	| | rate (sample/sec) | |		| | rate (samples/s) | |
	| | +=====================================+		| | +=====================================+
	| | | band_idc== |		| | | band_idc== |
	| | +========+========+=========+=========+		| | +========+========+=========+=========+
	| | | 0 | 1 | 2 | 3 |		| | | 0 | 1 | 2 | 3 |
	+=======+===================+========+========+=========+=========+		+=======+==================+========+========+=========+=========+
	| 1 | 3,041,280 | 8 | 11 | 15 | 23 |		| 1 | 3,041,280 | 8 | 11 | 15 | 23 |
	+-------+-------------------+--------+--------+---------+---------+		+-------+------------------+--------+--------+---------+---------+
	| 1.1 | 6,082,560 | 16 | 21 | 30 | 45 |		| 1.1 | 6,082,560 | 16 | 21 | 30 | 45 |
	+-------+-------------------+--------+--------+---------+---------+		+-------+------------------+--------+--------+---------+---------+
	| 2 | 15,667,200 | 39 | 54 | 76 | 114 |		| 2 | 15,667,200 | 39 | 54 | 76 | 114 |
	+-------+-------------------+--------+--------+---------+---------+		+-------+------------------+--------+--------+---------+---------+
	| 2.1 | 31,334,400 | 78 | 108 | 152 | 227 |		| 2.1 | 31,334,400 | 78 | 108 | 152 | 227 |
	+-------+-------------------+--------+--------+---------+---------+		+-------+------------------+--------+--------+---------+---------+
	| 3 | 66,846,720 | 114 | 159 | 222 | 333 |		| 3 | 66,846,720 | 114 | 159 | 222 | 333 |
	+-------+-------------------+--------+--------+---------+---------+		+-------+------------------+--------+--------+---------+---------+
	| 3.1 | 133,693,440 | 227 | 317 | 444 | 666 |		| 3.1 | 133,693,440 | 227 | 317 | 444 | 666 |
	+-------+-------------------+--------+--------+---------+---------+		+-------+------------------+--------+--------+---------+---------+
	| 4 | 265,420,800 | 455 | 637 | 892 | 1,338 |		| 4 | 265,420,800 | 455 | 637 | 892 | 1,338 |
	+-------+-------------------+--------+--------+---------+---------+		+-------+------------------+--------+--------+---------+---------+
	| 4.1 | 530,841,600 | 910 | 1,274 | 1,784 | 2,675 |		| 4.1 | 530,841,600 | 910 | 1,274 | 1,784 | 2,675 |
	+-------+-------------------+--------+--------+---------+---------+		+-------+------------------+--------+--------+---------+---------+
	| 5 | 1,061,683,200 | 1,820 | 2,548 | 3,567 | 5,350 |		| 5 | 1,061,683,200 | 1,820 | 2,548 | 3,567 | 5,350 |
	+-------+-------------------+--------+--------+---------+---------+		+-------+------------------+--------+--------+---------+---------+
	| 5.1 | 2,123,366,400 | 3,639 | 5,095 | 7,133 | 10,699 |		| 5.1 | 2,123,366,400 | 3,639 | 5,095 | 7,133 | 10,699 |
	+-------+-------------------+--------+--------+---------+---------+		+-------+------------------+--------+--------+---------+---------+
	| 6 | 4,777,574,400 | 7,278 | 10,189 | 14,265 | 21,397 |		| 6 | 4,777,574,400 | 7,278 | 10,189 | 14,265 | 21,397 |
	+-------+-------------------+--------+--------+---------+---------+		+-------+------------------+--------+--------+---------+---------+
	| 6.1 | 8,493,465,600 | 14,556 | 20,378 | 28,529 | 42,793 |		| 6.1 | 8,493,465,600 | 14,556 | 20,378 | 28,529 | 42,793 |
	+-------+-------------------+--------+--------+---------+---------+		+-------+------------------+--------+--------+---------+---------+
	| 7 | 16,986,931,200 | 29,111 | 40,756 | 57,058 | 85,586 |		| 7 | 16,986,931,200 | 29,111 | 40,756 | 57,058 | 85,586 |
	+-------+-------------------+--------+--------+---------+---------+		+-------+------------------+--------+--------+---------+---------+
	| 7.1 | 33,973,862,400 | 58,222 | 81,511 | 114,115 | 171,172 |		| 7.1 | 33,973,862,400 | 58,222 | 81,511 | 114,115 | 171,172 |
	+-------+-------------------+--------+--------+---------+---------+		+-------+------------------+--------+--------+---------+---------+
	Table 4: General level limits		Table 4: General level limits
	Table 5 shows widely used typical configurations of resolution and		Table 5 shows widely used typical configurations of resolution and
	frame rates of video and corresponding levels for them.		frame rates of video and corresponding levels for them.
	+==========+============+==================+===============+=======+		+==========+============+==================+===============+=======+
	| use case | resolution | frame per second | luma sample | level |		| use case | resolution | frame per second | luma sample | level |
	| | | | per second | |		| | | | per second | |
	+==========+============+==================+===============+=======+		+==========+============+==================+===============+=======+
	| 720p | 1280 x 720 | 30 | 27,648,000 | 2.1 |		| 720p | 1280 x 720 | 30 | 27,648,000 | 2.1 |
	+----------+------------+------------------+---------------+-------+		+----------+------------+------------------+---------------+-------+
End of changes. 6 change blocks.
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