j2k: s/ff_j2k_getsigctxno/ff_jpeg2000_getsigctxno/g

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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

libavcodec/j2k.h

@@ -215,7 +215,9 @@ void ff_j2k_set_significant(Jpeg2000T1Context *t1, int x, int y, int negative);
 
 extern uint8_t ff_jpeg2000_sigctxno_lut[256][4];
 
-static inline int ff_j2k_getsigctxno(int flag, int bandno)
+/* Get context label (number in range[0..8]) of a coefficient for significance
+ * propagation and cleanup coding passes. */
+static inline int ff_jpeg2000_getsigctxno(int flag, int bandno)
 {
     return ff_jpeg2000_sigctxno_lut[flag & 255][bandno];
 }

libavcodec/j2kdec.c

@@ -631,7 +631,7 @@ static void decode_sigpass(Jpeg2000T1Context *t1, int width, int height, int bpn
                     int flags_mask = -1;
                     if (vert_causal_ctx_csty_symbol && y == y0 + 3)
                         flags_mask &= ~(JPEG2000_T1_SIG_S | JPEG2000_T1_SIG_SW | JPEG2000_T1_SIG_SE);
-                    if (ff_mqc_decode(&t1->mqc, t1->mqc.cx_states + ff_j2k_getsigctxno(t1->flags[y+1][x+1] & flags_mask, bandno))){
+                    if (ff_mqc_decode(&t1->mqc, t1->mqc.cx_states + ff_jpeg2000_getsigctxno(t1->flags[y+1][x+1] & flags_mask, bandno))){
                         int xorbit, ctxno = ff_jpeg2000_getsgnctxno(t1->flags[y+1][x+1], &xorbit);
                         if (bpass_csty_symbol)
                              t1->data[y][x] = ff_mqc_decode(&t1->mqc, t1->mqc.cx_states + ctxno) ? -mask : mask;
@@ -694,7 +694,7 @@ static void decode_clnpass(Jpeg2000DecoderContext *s, Jpeg2000T1Context *t1, int
                         int flags_mask = -1;
                         if (vert_causal_ctx_csty_symbol && y == y0 + 3)
                             flags_mask &= ~(JPEG2000_T1_SIG_S | JPEG2000_T1_SIG_SW | JPEG2000_T1_SIG_SE);
-                        dec = ff_mqc_decode(&t1->mqc, t1->mqc.cx_states + ff_j2k_getsigctxno(t1->flags[y+1][x+1] & flags_mask,
+                        dec = ff_mqc_decode(&t1->mqc, t1->mqc.cx_states + ff_jpeg2000_getsigctxno(t1->flags[y+1][x+1] & flags_mask,
                                                                                              bandno));
                     }
                 }

libavcodec/j2kenc.c

@@ -480,7 +480,7 @@ static void encode_sigpass(Jpeg2000T1Context *t1, int width, int height, int ban
         for (x = 0; x < width; x++)
             for (y = y0; y < height && y < y0+4; y++){
                 if (!(t1->flags[y+1][x+1] & JPEG2000_T1_SIG) && (t1->flags[y+1][x+1] & JPEG2000_T1_SIG_NB)){
-                    int ctxno = ff_j2k_getsigctxno(t1->flags[y+1][x+1], bandno),
+                    int ctxno = ff_jpeg2000_getsigctxno(t1->flags[y+1][x+1], bandno),
                         bit = t1->data[y][x] & mask ? 1 : 0;
                     ff_mqc_encode(&t1->mqc, t1->mqc.cx_states + ctxno, bit);
                     if (bit){
@@ -532,7 +532,7 @@ static void encode_clnpass(Jpeg2000T1Context *t1, int width, int height, int ban
                 ff_mqc_encode(&t1->mqc, t1->mqc.cx_states + MQC_CX_UNI, rlen & 1);
                 for (y = y0 + rlen; y < y0 + 4; y++){
                     if (!(t1->flags[y+1][x+1] & (JPEG2000_T1_SIG | JPEG2000_T1_VIS))){
-                        int ctxno = ff_j2k_getsigctxno(t1->flags[y+1][x+1], bandno);
+                        int ctxno = ff_jpeg2000_getsigctxno(t1->flags[y+1][x+1], bandno);
                         if (y > y0 + rlen)
                             ff_mqc_encode(&t1->mqc, t1->mqc.cx_states + ctxno, t1->data[y][x] & mask ? 1:0);
                         if (t1->data[y][x] & mask){ // newly significant
@@ -548,7 +548,7 @@ static void encode_clnpass(Jpeg2000T1Context *t1, int width, int height, int ban
             } else{
                 for (y = y0; y < y0 + 4 && y < height; y++){
                     if (!(t1->flags[y+1][x+1] & (JPEG2000_T1_SIG | JPEG2000_T1_VIS))){
-                        int ctxno = ff_j2k_getsigctxno(t1->flags[y+1][x+1], bandno);
+                        int ctxno = ff_jpeg2000_getsigctxno(t1->flags[y+1][x+1], bandno);
                         ff_mqc_encode(&t1->mqc, t1->mqc.cx_states + ctxno, t1->data[y][x] & mask ? 1:0);
                         if (t1->data[y][x] & mask){ // newly significant
                             int xorbit;