Lines Matching refs:AC
491 /* The direction enumerator is used with functions that perform AC/DC prediction and zig-zag scan. */
605 OMX_U8 pPredDir[2][2]; /* AC prediction direction:
1189 * When shortVideoHeader==1, AC coefficients are saturated on the
1191 * interval [1, 254]. When shortVideoHeader==0, AC coefficients
1231 * When shortVideoHeader==1, AC coefficients are saturated on the
1233 * interval [1, 254]. When shortVideoHeader==0, AC coefficients
1256 * Quantizes the DCT coefficients, implements intra block AC/DC coefficient
1270 * contain the quantized AC coefficients. Each group of eight row
1276 * therefore the AC and DC coefficients are invalid. Pointer must
1282 * pSumErr - pointer to a flag indicating whether or not AC prediction is
1283 * required; AC prediction is enabled if *pSumErr >=0, but the
1286 * function. Otherwise AC prediction is disabled if *pSumErr < 0 .
1298 * sub-clause 7.4.3.3, Adaptive AC Coefficient Prediction.
1310 * quantized AC coefficients (without prediction). The pointer
1322 * pPreACPredict[1]-pPreACPredict[7]contain predicted AC
1326 * pSumErr - pointer to the value of the accumulated AC coefficient errors,
1328 * unpredicted AC coefficients
1415 * Performs zigzag scan and VLC encoding of AC and DC coefficients for one
1427 * predDir - AC prediction direction, which is used to decide the zigzag
1429 * - OMX_VC_NONE - AC prediction not used.
1479 * Performs zigzag scan and VLC encoding of AC and DC coefficients for one
1491 * predDir - AC prediction direction, which is used to decide the zigzag
1493 * - OMX_VC_NONE - AC prediction not used.
1711 * Performs VLC decoding and inverse zigzag scan of AC and DC coefficients
1726 * predDir - AC prediction direction; used to select the zigzag scan
1728 * - OMX_VC_NONE - AC prediction not used;
1782 * Performs VLC decoding and inverse zigzag scan of AC and DC coefficients
1796 * predDir - AC prediction direction; used to select the zigzag scan
1797 * pattern; takes one of the following values: OMX_VC_NONE - AC
1982 * at least one non-zero AC coefficient of current block exists in the bit
2116 * Performs adaptive DC/AC coefficient prediction for an intra block. Prior
2137 * ACPredFlag - a flag indicating if AC prediction should be performed. It
2148 * Buffer update: Update the AC prediction buffer (both row and
3253 * there re 16 non-zero AC coefficients at most in the packed buffer starting
3254 * from 4x4 block position 0; If pDC != NULL, there re 15 non-zero AC
3270 * AC - Flag indicating if at least one non-zero AC coefficient exists
3283 * - AC !=0 and Qp is not in the range of [0-51] or ppSrc == NULL.
3284 * - AC ==0 && pDC ==NULL.
3295 OMX_INT AC
4226 * bAC - Indicate whether there is AC coefficients in the coefficients