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author | Rostislav Pehlivanov <atomnuker@gmail.com> | 2017-12-04 08:55:45 +0000 |
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committer | Rostislav Pehlivanov <atomnuker@gmail.com> | 2017-12-04 10:51:19 +0000 |
commit | ce87e630fa009d0bf78cd7a7599e6efc221e6543 (patch) | |
tree | a0dab6973b6b5c9b0ff994b28fc51afcaac0152c /libavcodec/opusenc.c | |
parent | 86fda8be3f3892c48474a319e0ef7509dc137e3e (diff) | |
download | ffmpeg-ce87e630fa009d0bf78cd7a7599e6efc221e6543.tar.gz |
opus_celt: deduplicate band quantization/dequantization function
No point in having the same code twice to do exactly the same thing.
Signed-off-by: Rostislav Pehlivanov <atomnuker@gmail.com>
Diffstat (limited to 'libavcodec/opusenc.c')
-rw-r--r-- | libavcodec/opusenc.c | 110 |
1 files changed, 11 insertions, 99 deletions
diff --git a/libavcodec/opusenc.c b/libavcodec/opusenc.c index 79d20dc6e6..93b2116e7b 100644 --- a/libavcodec/opusenc.c +++ b/libavcodec/opusenc.c @@ -255,7 +255,7 @@ static void celt_frame_mdct(OpusEncContext *s, CeltFrame *f) } } -static void celt_enc_tf(OpusRangeCoder *rc, CeltFrame *f) +static void celt_enc_tf(CeltFrame *f, OpusRangeCoder *rc) { int i, tf_select = 0, diff = 0, tf_changed = 0, tf_select_needed; int bits = f->transient ? 2 : 4; @@ -282,7 +282,7 @@ static void celt_enc_tf(OpusRangeCoder *rc, CeltFrame *f) f->tf_change[i] = ff_celt_tf_select[f->size][f->transient][tf_select][f->tf_change[i]]; } -void ff_celt_enc_bitalloc(OpusRangeCoder *rc, CeltFrame *f) +void ff_celt_enc_bitalloc(CeltFrame *f, OpusRangeCoder *rc) { int i, j, low, high, total, done, bandbits, remaining, tbits_8ths; int skip_startband = f->start_band; @@ -690,7 +690,7 @@ static void exp_quant_coarse(OpusRangeCoder *rc, CeltFrame *f, } } -static void celt_quant_coarse(OpusRangeCoder *rc, CeltFrame *f, +static void celt_quant_coarse(CeltFrame *f, OpusRangeCoder *rc, float last_energy[][CELT_MAX_BANDS]) { uint32_t inter, intra; @@ -710,7 +710,7 @@ static void celt_quant_coarse(OpusRangeCoder *rc, CeltFrame *f, } } -static void celt_quant_fine(OpusRangeCoder *rc, CeltFrame *f) +static void celt_quant_fine(CeltFrame *f, OpusRangeCoder *rc) { int i, ch; for (i = f->start_band; i < f->end_band; i++) { @@ -747,95 +747,6 @@ static void celt_quant_final(OpusEncContext *s, OpusRangeCoder *rc, CeltFrame *f } } -static void celt_quant_bands(OpusRangeCoder *rc, CeltFrame *f) -{ - float lowband_scratch[8 * 22]; - float norm[2 * 8 * 100]; - - int totalbits = (f->framebits << 3) - f->anticollapse_needed; - - int update_lowband = 1; - int lowband_offset = 0; - - int i, j; - - for (i = f->start_band; i < f->end_band; i++) { - uint32_t cm[2] = { (1 << f->blocks) - 1, (1 << f->blocks) - 1 }; - int band_offset = ff_celt_freq_bands[i] << f->size; - int band_size = ff_celt_freq_range[i] << f->size; - float *X = f->block[0].coeffs + band_offset; - float *Y = (f->channels == 2) ? f->block[1].coeffs + band_offset : NULL; - - int consumed = opus_rc_tell_frac(rc); - float *norm2 = norm + 8 * 100; - int effective_lowband = -1; - int b = 0; - - /* Compute how many bits we want to allocate to this band */ - if (i != f->start_band) - f->remaining -= consumed; - f->remaining2 = totalbits - consumed - 1; - if (i <= f->coded_bands - 1) { - int curr_balance = f->remaining / FFMIN(3, f->coded_bands-i); - b = av_clip_uintp2(FFMIN(f->remaining2 + 1, f->pulses[i] + curr_balance), 14); - } - - if (ff_celt_freq_bands[i] - ff_celt_freq_range[i] >= ff_celt_freq_bands[f->start_band] && - (update_lowband || lowband_offset == 0)) - lowband_offset = i; - - /* Get a conservative estimate of the collapse_mask's for the bands we're - going to be folding from. */ - if (lowband_offset != 0 && (f->spread != CELT_SPREAD_AGGRESSIVE || - f->blocks > 1 || f->tf_change[i] < 0)) { - int foldstart, foldend; - - /* This ensures we never repeat spectral content within one band */ - effective_lowband = FFMAX(ff_celt_freq_bands[f->start_band], - ff_celt_freq_bands[lowband_offset] - ff_celt_freq_range[i]); - foldstart = lowband_offset; - while (ff_celt_freq_bands[--foldstart] > effective_lowband); - foldend = lowband_offset - 1; - while (ff_celt_freq_bands[++foldend] < effective_lowband + ff_celt_freq_range[i]); - - cm[0] = cm[1] = 0; - for (j = foldstart; j < foldend; j++) { - cm[0] |= f->block[0].collapse_masks[j]; - cm[1] |= f->block[f->channels - 1].collapse_masks[j]; - } - } - - if (f->dual_stereo && i == f->intensity_stereo) { - /* Switch off dual stereo to do intensity */ - f->dual_stereo = 0; - for (j = ff_celt_freq_bands[f->start_band] << f->size; j < band_offset; j++) - norm[j] = (norm[j] + norm2[j]) / 2; - } - - if (f->dual_stereo) { - cm[0] = f->pvq->encode_band(f->pvq, f, rc, i, X, NULL, band_size, b / 2, f->blocks, - effective_lowband != -1 ? norm + (effective_lowband << f->size) : NULL, f->size, - norm + band_offset, 0, 1.0f, lowband_scratch, cm[0]); - - cm[1] = f->pvq->encode_band(f->pvq, f, rc, i, Y, NULL, band_size, b / 2, f->blocks, - effective_lowband != -1 ? norm2 + (effective_lowband << f->size) : NULL, f->size, - norm2 + band_offset, 0, 1.0f, lowband_scratch, cm[1]); - } else { - cm[0] = f->pvq->encode_band(f->pvq, f, rc, i, X, Y, band_size, b, f->blocks, - effective_lowband != -1 ? norm + (effective_lowband << f->size) : NULL, f->size, - norm + band_offset, 0, 1.0f, lowband_scratch, cm[0] | cm[1]); - cm[1] = cm[0]; - } - - f->block[0].collapse_masks[i] = (uint8_t)cm[0]; - f->block[f->channels - 1].collapse_masks[i] = (uint8_t)cm[1]; - f->remaining += f->pulses[i] + consumed; - - /* Update the folding position only as long as we have 1 bit/sample depth */ - update_lowband = (b > band_size << 3); - } -} - static void celt_encode_frame(OpusEncContext *s, OpusRangeCoder *rc, CeltFrame *f, int index) { @@ -883,11 +794,11 @@ static void celt_encode_frame(OpusEncContext *s, OpusRangeCoder *rc, ff_opus_rc_enc_log(rc, f->transient, 3); /* Main encoding */ - celt_quant_coarse(rc, f, s->last_quantized_energy); - celt_enc_tf (rc, f); - ff_celt_enc_bitalloc(rc, f); - celt_quant_fine (rc, f); - celt_quant_bands (rc, f); + celt_quant_coarse (f, rc, s->last_quantized_energy); + celt_enc_tf (f, rc); + ff_celt_enc_bitalloc(f, rc); + celt_quant_fine (f, rc); + ff_celt_quant_bands (f, rc); /* Anticollapse bit */ if (f->anticollapse_needed) @@ -1080,7 +991,7 @@ static av_cold int opus_encode_init(AVCodecContext *avctx) ff_af_queue_init(avctx, &s->afq); - if ((ret = ff_celt_pvq_init(&s->pvq)) < 0) + if ((ret = ff_celt_pvq_init(&s->pvq, 1)) < 0) return ret; if (!(s->dsp = avpriv_float_dsp_alloc(avctx->flags & AV_CODEC_FLAG_BITEXACT))) @@ -1117,6 +1028,7 @@ static av_cold int opus_encode_init(AVCodecContext *avctx) s->frame[i].avctx = s->avctx; s->frame[i].seed = 0; s->frame[i].pvq = s->pvq; + s->frame[i].apply_phase_inv = 1; s->frame[i].block[0].emph_coeff = s->frame[i].block[1].emph_coeff = 0.0f; } |