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j2k: s/ff_j2k_getsigctxno/ff_jpeg2000_getsigctxno/g
Also add a related comment Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
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@ -215,7 +215,9 @@ void ff_j2k_set_significant(Jpeg2000T1Context *t1, int x, int y, int negative);
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extern uint8_t ff_jpeg2000_sigctxno_lut[256][4];
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static inline int ff_j2k_getsigctxno(int flag, int bandno)
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/* Get context label (number in range[0..8]) of a coefficient for significance
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* propagation and cleanup coding passes. */
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static inline int ff_jpeg2000_getsigctxno(int flag, int bandno)
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{
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return ff_jpeg2000_sigctxno_lut[flag & 255][bandno];
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}
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@ -631,7 +631,7 @@ static void decode_sigpass(Jpeg2000T1Context *t1, int width, int height, int bpn
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int flags_mask = -1;
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if (vert_causal_ctx_csty_symbol && y == y0 + 3)
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flags_mask &= ~(JPEG2000_T1_SIG_S | JPEG2000_T1_SIG_SW | JPEG2000_T1_SIG_SE);
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if (ff_mqc_decode(&t1->mqc, t1->mqc.cx_states + ff_j2k_getsigctxno(t1->flags[y+1][x+1] & flags_mask, bandno))){
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if (ff_mqc_decode(&t1->mqc, t1->mqc.cx_states + ff_jpeg2000_getsigctxno(t1->flags[y+1][x+1] & flags_mask, bandno))){
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int xorbit, ctxno = ff_jpeg2000_getsgnctxno(t1->flags[y+1][x+1], &xorbit);
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if (bpass_csty_symbol)
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t1->data[y][x] = ff_mqc_decode(&t1->mqc, t1->mqc.cx_states + ctxno) ? -mask : mask;
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@ -694,7 +694,7 @@ static void decode_clnpass(Jpeg2000DecoderContext *s, Jpeg2000T1Context *t1, int
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int flags_mask = -1;
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if (vert_causal_ctx_csty_symbol && y == y0 + 3)
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flags_mask &= ~(JPEG2000_T1_SIG_S | JPEG2000_T1_SIG_SW | JPEG2000_T1_SIG_SE);
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dec = ff_mqc_decode(&t1->mqc, t1->mqc.cx_states + ff_j2k_getsigctxno(t1->flags[y+1][x+1] & flags_mask,
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dec = ff_mqc_decode(&t1->mqc, t1->mqc.cx_states + ff_jpeg2000_getsigctxno(t1->flags[y+1][x+1] & flags_mask,
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bandno));
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}
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}
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@ -480,7 +480,7 @@ static void encode_sigpass(Jpeg2000T1Context *t1, int width, int height, int ban
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for (x = 0; x < width; x++)
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for (y = y0; y < height && y < y0+4; y++){
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if (!(t1->flags[y+1][x+1] & JPEG2000_T1_SIG) && (t1->flags[y+1][x+1] & JPEG2000_T1_SIG_NB)){
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int ctxno = ff_j2k_getsigctxno(t1->flags[y+1][x+1], bandno),
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int ctxno = ff_jpeg2000_getsigctxno(t1->flags[y+1][x+1], bandno),
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bit = t1->data[y][x] & mask ? 1 : 0;
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ff_mqc_encode(&t1->mqc, t1->mqc.cx_states + ctxno, bit);
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if (bit){
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@ -532,7 +532,7 @@ static void encode_clnpass(Jpeg2000T1Context *t1, int width, int height, int ban
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ff_mqc_encode(&t1->mqc, t1->mqc.cx_states + MQC_CX_UNI, rlen & 1);
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for (y = y0 + rlen; y < y0 + 4; y++){
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if (!(t1->flags[y+1][x+1] & (JPEG2000_T1_SIG | JPEG2000_T1_VIS))){
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int ctxno = ff_j2k_getsigctxno(t1->flags[y+1][x+1], bandno);
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int ctxno = ff_jpeg2000_getsigctxno(t1->flags[y+1][x+1], bandno);
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if (y > y0 + rlen)
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ff_mqc_encode(&t1->mqc, t1->mqc.cx_states + ctxno, t1->data[y][x] & mask ? 1:0);
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if (t1->data[y][x] & mask){ // newly significant
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@ -548,7 +548,7 @@ static void encode_clnpass(Jpeg2000T1Context *t1, int width, int height, int ban
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} else{
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for (y = y0; y < y0 + 4 && y < height; y++){
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if (!(t1->flags[y+1][x+1] & (JPEG2000_T1_SIG | JPEG2000_T1_VIS))){
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int ctxno = ff_j2k_getsigctxno(t1->flags[y+1][x+1], bandno);
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int ctxno = ff_jpeg2000_getsigctxno(t1->flags[y+1][x+1], bandno);
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ff_mqc_encode(&t1->mqc, t1->mqc.cx_states + ctxno, t1->data[y][x] & mask ? 1:0);
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if (t1->data[y][x] & mask){ // newly significant
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int xorbit;
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