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| author | Ramiro Polla <ramiro.polla@gmail.com> | 2009-05-15 15:34:22 +0000 |
|---|---|---|
| committer | Ramiro Polla <ramiro.polla@gmail.com> | 2009-05-15 15:34:22 +0000 |
| commit | 13bd2044d3887b7f0008168c5173a274b5247488 (patch) | |
| tree | 28efb00200745da115d578ef8d9743eb32872cfd /libavcodec/mlpdec.c | |
| parent | 42e64bf874ee7dae7cf78773e12fbb35571948e3 (diff) | |
| download | ffmpeg-13bd2044d3887b7f0008168c5173a274b5247488.tar.gz | |
mlp: Simplify adressing of state and coeffs arrays for both filters by making
the arrays sequential.
Originally committed as revision 18841 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec/mlpdec.c')
| -rw-r--r-- | libavcodec/mlpdec.c | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/libavcodec/mlpdec.c b/libavcodec/mlpdec.c index 0a64d79897..88803959bf 100644 --- a/libavcodec/mlpdec.c +++ b/libavcodec/mlpdec.c @@ -495,6 +495,7 @@ static int read_filter_params(MLPDecodeContext *m, GetBitContext *gbp, fp->order = order; if (order > 0) { + int32_t *fcoeff = m->channel_params[channel].coeff[filter]; int coeff_bits, coeff_shift; fp->shift = get_bits(gbp, 4); @@ -515,7 +516,7 @@ static int read_filter_params(MLPDecodeContext *m, GetBitContext *gbp, } for (i = 0; i < order; i++) - fp->coeff[i] = get_sbits(gbp, coeff_bits) << coeff_shift; + fcoeff[i] = get_sbits(gbp, coeff_bits) << coeff_shift; if (get_bits1(gbp)) { int state_bits, state_shift; @@ -718,10 +719,10 @@ static void filter_channel(MLPDecodeContext *m, unsigned int substr, unsigned int channel) { SubStream *s = &m->substream[substr]; - int32_t fir_state_buffer[MAX_BLOCKSIZE + MAX_FIR_ORDER]; - int32_t iir_state_buffer[MAX_BLOCKSIZE + MAX_IIR_ORDER]; - int32_t *firbuf = fir_state_buffer + MAX_BLOCKSIZE; - int32_t *iirbuf = iir_state_buffer + MAX_BLOCKSIZE; + const int32_t *fircoeff = m->channel_params[channel].coeff[FIR]; + int32_t state_buffer[NUM_FILTERS][MAX_BLOCKSIZE + MAX_FIR_ORDER]; + int32_t *firbuf = state_buffer[FIR] + MAX_BLOCKSIZE; + int32_t *iirbuf = state_buffer[IIR] + MAX_BLOCKSIZE; FilterParams *fir = &m->channel_params[channel].filter_params[FIR]; FilterParams *iir = &m->channel_params[channel].filter_params[IIR]; unsigned int filter_shift = fir->shift; @@ -730,8 +731,8 @@ static void filter_channel(MLPDecodeContext *m, unsigned int substr, memcpy(firbuf, fir->state, MAX_FIR_ORDER * sizeof(int32_t)); memcpy(iirbuf, iir->state, MAX_IIR_ORDER * sizeof(int32_t)); - m->dsp.mlp_filter_channel(firbuf, fir->coeff, fir->order, - iirbuf, iir->coeff, iir->order, + m->dsp.mlp_filter_channel(firbuf, fircoeff, + fir->order, iir->order, filter_shift, mask, s->blocksize, &m->sample_buffer[s->blockpos][channel]); |