[FFmpeg-cvslog] Merge commit '42c4c2d2a6dc48adb0e901ef5617acfba0a3a18e'
Clément Bœsch
git at videolan.org
Sun Mar 19 16:55:29 EET 2017
ffmpeg | branch: master | Clément Bœsch <u at pkh.me> | Sun Mar 19 15:54:44 2017 +0100| [842e7853c73d09f8e262d379b5bc1479098655d8] | committer: Clément Bœsch
Merge commit '42c4c2d2a6dc48adb0e901ef5617acfba0a3a18e'
* commit '42c4c2d2a6dc48adb0e901ef5617acfba0a3a18e':
aac: Drop broken cruft
Merged-by: Clément Bœsch <u at pkh.me>
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=842e7853c73d09f8e262d379b5bc1479098655d8
---
libavcodec/aacsbr_template.c | 6 ------
1 file changed, 6 deletions(-)
diff --git a/libavcodec/aacsbr_template.c b/libavcodec/aacsbr_template.c
index f8aa485..cf8621e 100644
--- a/libavcodec/aacsbr_template.c
+++ b/libavcodec/aacsbr_template.c
@@ -941,14 +941,8 @@ static void read_sbr_extension(AACContext *ac, SpectralBandReplication *sbr,
skip_bits_long(gb, *num_bits_left); // bs_fill_bits
*num_bits_left = 0;
} else {
-#if 1
*num_bits_left -= AAC_RENAME(ff_ps_read_data)(ac->avctx, gb, &sbr->ps, *num_bits_left);
ac->avctx->profile = FF_PROFILE_AAC_HE_V2;
-#else
- avpriv_report_missing_feature(ac->avctx, "Parametric Stereo");
- skip_bits_long(gb, *num_bits_left); // bs_fill_bits
- *num_bits_left = 0;
-#endif
}
break;
default:
======================================================================
diff --cc libavcodec/aacsbr_template.c
index f8aa485,0000000..cf8621e
mode 100644,000000..100644
--- a/libavcodec/aacsbr_template.c
+++ b/libavcodec/aacsbr_template.c
@@@ -1,1572 -1,0 +1,1566 @@@
+/*
+ * AAC Spectral Band Replication decoding functions
+ * Copyright (c) 2008-2009 Robert Swain ( rob opendot cl )
+ * Copyright (c) 2009-2010 Alex Converse <alex.converse at gmail.com>
+ *
+ * Fixed point code
+ * Copyright (c) 2013
+ * MIPS Technologies, Inc., California.
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * AAC Spectral Band Replication decoding functions
+ * @author Robert Swain ( rob opendot cl )
+ * @author Stanislav Ocovaj ( stanislav.ocovaj at imgtec.com )
+ * @author Zoran Basaric ( zoran.basaric at imgtec.com )
+ */
+
+#include "libavutil/qsort.h"
+
+av_cold void AAC_RENAME(ff_aac_sbr_init)(void)
+{
+ static const struct {
+ const void *sbr_codes, *sbr_bits;
+ const unsigned int table_size, elem_size;
+ } sbr_tmp[] = {
+ SBR_VLC_ROW(t_huffman_env_1_5dB),
+ SBR_VLC_ROW(f_huffman_env_1_5dB),
+ SBR_VLC_ROW(t_huffman_env_bal_1_5dB),
+ SBR_VLC_ROW(f_huffman_env_bal_1_5dB),
+ SBR_VLC_ROW(t_huffman_env_3_0dB),
+ SBR_VLC_ROW(f_huffman_env_3_0dB),
+ SBR_VLC_ROW(t_huffman_env_bal_3_0dB),
+ SBR_VLC_ROW(f_huffman_env_bal_3_0dB),
+ SBR_VLC_ROW(t_huffman_noise_3_0dB),
+ SBR_VLC_ROW(t_huffman_noise_bal_3_0dB),
+ };
+
+ // SBR VLC table initialization
+ SBR_INIT_VLC_STATIC(0, 1098);
+ SBR_INIT_VLC_STATIC(1, 1092);
+ SBR_INIT_VLC_STATIC(2, 768);
+ SBR_INIT_VLC_STATIC(3, 1026);
+ SBR_INIT_VLC_STATIC(4, 1058);
+ SBR_INIT_VLC_STATIC(5, 1052);
+ SBR_INIT_VLC_STATIC(6, 544);
+ SBR_INIT_VLC_STATIC(7, 544);
+ SBR_INIT_VLC_STATIC(8, 592);
+ SBR_INIT_VLC_STATIC(9, 512);
+
+ aacsbr_tableinit();
+
+ AAC_RENAME(ff_ps_init)();
+}
+
+/** Places SBR in pure upsampling mode. */
+static void sbr_turnoff(SpectralBandReplication *sbr) {
+ sbr->start = 0;
+ sbr->ready_for_dequant = 0;
+ // Init defults used in pure upsampling mode
+ sbr->kx[1] = 32; //Typo in spec, kx' inits to 32
+ sbr->m[1] = 0;
+ // Reset values for first SBR header
+ sbr->data[0].e_a[1] = sbr->data[1].e_a[1] = -1;
+ memset(&sbr->spectrum_params, -1, sizeof(SpectrumParameters));
+}
+
+av_cold void AAC_RENAME(ff_aac_sbr_ctx_init)(AACContext *ac, SpectralBandReplication *sbr, int id_aac)
+{
+ if(sbr->mdct.mdct_bits)
+ return;
+ sbr->kx[0] = sbr->kx[1];
+ sbr->id_aac = id_aac;
+ sbr_turnoff(sbr);
+ sbr->data[0].synthesis_filterbank_samples_offset = SBR_SYNTHESIS_BUF_SIZE - (1280 - 128);
+ sbr->data[1].synthesis_filterbank_samples_offset = SBR_SYNTHESIS_BUF_SIZE - (1280 - 128);
+ /* SBR requires samples to be scaled to +/-32768.0 to work correctly.
+ * mdct scale factors are adjusted to scale up from +/-1.0 at analysis
+ * and scale back down at synthesis. */
+ AAC_RENAME_32(ff_mdct_init)(&sbr->mdct, 7, 1, 1.0 / (64 * 32768.0));
+ AAC_RENAME_32(ff_mdct_init)(&sbr->mdct_ana, 7, 1, -2.0 * 32768.0);
+ AAC_RENAME(ff_ps_ctx_init)(&sbr->ps);
+ AAC_RENAME(ff_sbrdsp_init)(&sbr->dsp);
+ aacsbr_func_ptr_init(&sbr->c);
+}
+
+av_cold void AAC_RENAME(ff_aac_sbr_ctx_close)(SpectralBandReplication *sbr)
+{
+ AAC_RENAME_32(ff_mdct_end)(&sbr->mdct);
+ AAC_RENAME_32(ff_mdct_end)(&sbr->mdct_ana);
+}
+
+static int qsort_comparison_function_int16(const void *a, const void *b)
+{
+ return *(const int16_t *)a - *(const int16_t *)b;
+}
+
+static inline int in_table_int16(const int16_t *table, int last_el, int16_t needle)
+{
+ int i;
+ for (i = 0; i <= last_el; i++)
+ if (table[i] == needle)
+ return 1;
+ return 0;
+}
+
+/// Limiter Frequency Band Table (14496-3 sp04 p198)
+static void sbr_make_f_tablelim(SpectralBandReplication *sbr)
+{
+ int k;
+ if (sbr->bs_limiter_bands > 0) {
+ static const INTFLOAT bands_warped[3] = { Q23(1.32715174233856803909f), //2^(0.49/1.2)
+ Q23(1.18509277094158210129f), //2^(0.49/2)
+ Q23(1.11987160404675912501f) }; //2^(0.49/3)
+ const INTFLOAT lim_bands_per_octave_warped = bands_warped[sbr->bs_limiter_bands - 1];
+ int16_t patch_borders[7];
+ uint16_t *in = sbr->f_tablelim + 1, *out = sbr->f_tablelim;
+
+ patch_borders[0] = sbr->kx[1];
+ for (k = 1; k <= sbr->num_patches; k++)
+ patch_borders[k] = patch_borders[k-1] + sbr->patch_num_subbands[k-1];
+
+ memcpy(sbr->f_tablelim, sbr->f_tablelow,
+ (sbr->n[0] + 1) * sizeof(sbr->f_tablelow[0]));
+ if (sbr->num_patches > 1)
+ memcpy(sbr->f_tablelim + sbr->n[0] + 1, patch_borders + 1,
+ (sbr->num_patches - 1) * sizeof(patch_borders[0]));
+
+ AV_QSORT(sbr->f_tablelim, sbr->num_patches + sbr->n[0],
+ uint16_t,
+ qsort_comparison_function_int16);
+
+ sbr->n_lim = sbr->n[0] + sbr->num_patches - 1;
+ while (out < sbr->f_tablelim + sbr->n_lim) {
+#if USE_FIXED
+ if ((*in << 23) >= *out * lim_bands_per_octave_warped) {
+#else
+ if (*in >= *out * lim_bands_per_octave_warped) {
+#endif /* USE_FIXED */
+ *++out = *in++;
+ } else if (*in == *out ||
+ !in_table_int16(patch_borders, sbr->num_patches, *in)) {
+ in++;
+ sbr->n_lim--;
+ } else if (!in_table_int16(patch_borders, sbr->num_patches, *out)) {
+ *out = *in++;
+ sbr->n_lim--;
+ } else {
+ *++out = *in++;
+ }
+ }
+ } else {
+ sbr->f_tablelim[0] = sbr->f_tablelow[0];
+ sbr->f_tablelim[1] = sbr->f_tablelow[sbr->n[0]];
+ sbr->n_lim = 1;
+ }
+}
+
+static unsigned int read_sbr_header(SpectralBandReplication *sbr, GetBitContext *gb)
+{
+ unsigned int cnt = get_bits_count(gb);
+ uint8_t bs_header_extra_1;
+ uint8_t bs_header_extra_2;
+ int old_bs_limiter_bands = sbr->bs_limiter_bands;
+ SpectrumParameters old_spectrum_params;
+
+ sbr->start = 1;
+ sbr->ready_for_dequant = 0;
+
+ // Save last spectrum parameters variables to compare to new ones
+ memcpy(&old_spectrum_params, &sbr->spectrum_params, sizeof(SpectrumParameters));
+
+ sbr->bs_amp_res_header = get_bits1(gb);
+ sbr->spectrum_params.bs_start_freq = get_bits(gb, 4);
+ sbr->spectrum_params.bs_stop_freq = get_bits(gb, 4);
+ sbr->spectrum_params.bs_xover_band = get_bits(gb, 3);
+ skip_bits(gb, 2); // bs_reserved
+
+ bs_header_extra_1 = get_bits1(gb);
+ bs_header_extra_2 = get_bits1(gb);
+
+ if (bs_header_extra_1) {
+ sbr->spectrum_params.bs_freq_scale = get_bits(gb, 2);
+ sbr->spectrum_params.bs_alter_scale = get_bits1(gb);
+ sbr->spectrum_params.bs_noise_bands = get_bits(gb, 2);
+ } else {
+ sbr->spectrum_params.bs_freq_scale = 2;
+ sbr->spectrum_params.bs_alter_scale = 1;
+ sbr->spectrum_params.bs_noise_bands = 2;
+ }
+
+ // Check if spectrum parameters changed
+ if (memcmp(&old_spectrum_params, &sbr->spectrum_params, sizeof(SpectrumParameters)))
+ sbr->reset = 1;
+
+ if (bs_header_extra_2) {
+ sbr->bs_limiter_bands = get_bits(gb, 2);
+ sbr->bs_limiter_gains = get_bits(gb, 2);
+ sbr->bs_interpol_freq = get_bits1(gb);
+ sbr->bs_smoothing_mode = get_bits1(gb);
+ } else {
+ sbr->bs_limiter_bands = 2;
+ sbr->bs_limiter_gains = 2;
+ sbr->bs_interpol_freq = 1;
+ sbr->bs_smoothing_mode = 1;
+ }
+
+ if (sbr->bs_limiter_bands != old_bs_limiter_bands && !sbr->reset)
+ sbr_make_f_tablelim(sbr);
+
+ return get_bits_count(gb) - cnt;
+}
+
+static int array_min_int16(const int16_t *array, int nel)
+{
+ int i, min = array[0];
+ for (i = 1; i < nel; i++)
+ min = FFMIN(array[i], min);
+ return min;
+}
+
+static int check_n_master(AVCodecContext *avctx, int n_master, int bs_xover_band)
+{
+ // Requirements (14496-3 sp04 p205)
+ if (n_master <= 0) {
+ av_log(avctx, AV_LOG_ERROR, "Invalid n_master: %d\n", n_master);
+ return -1;
+ }
+ if (bs_xover_band >= n_master) {
+ av_log(avctx, AV_LOG_ERROR,
+ "Invalid bitstream, crossover band index beyond array bounds: %d\n",
+ bs_xover_band);
+ return -1;
+ }
+ return 0;
+}
+
+/// Master Frequency Band Table (14496-3 sp04 p194)
+static int sbr_make_f_master(AACContext *ac, SpectralBandReplication *sbr,
+ SpectrumParameters *spectrum)
+{
+ unsigned int temp, max_qmf_subbands = 0;
+ unsigned int start_min, stop_min;
+ int k;
+ const int8_t *sbr_offset_ptr;
+ int16_t stop_dk[13];
+
+ if (sbr->sample_rate < 32000) {
+ temp = 3000;
+ } else if (sbr->sample_rate < 64000) {
+ temp = 4000;
+ } else
+ temp = 5000;
+
+ switch (sbr->sample_rate) {
+ case 16000:
+ sbr_offset_ptr = sbr_offset[0];
+ break;
+ case 22050:
+ sbr_offset_ptr = sbr_offset[1];
+ break;
+ case 24000:
+ sbr_offset_ptr = sbr_offset[2];
+ break;
+ case 32000:
+ sbr_offset_ptr = sbr_offset[3];
+ break;
+ case 44100: case 48000: case 64000:
+ sbr_offset_ptr = sbr_offset[4];
+ break;
+ case 88200: case 96000: case 128000: case 176400: case 192000:
+ sbr_offset_ptr = sbr_offset[5];
+ break;
+ default:
+ av_log(ac->avctx, AV_LOG_ERROR,
+ "Unsupported sample rate for SBR: %d\n", sbr->sample_rate);
+ return -1;
+ }
+
+ start_min = ((temp << 7) + (sbr->sample_rate >> 1)) / sbr->sample_rate;
+ stop_min = ((temp << 8) + (sbr->sample_rate >> 1)) / sbr->sample_rate;
+
+ sbr->k[0] = start_min + sbr_offset_ptr[spectrum->bs_start_freq];
+
+ if (spectrum->bs_stop_freq < 14) {
+ sbr->k[2] = stop_min;
+ make_bands(stop_dk, stop_min, 64, 13);
+ AV_QSORT(stop_dk, 13, int16_t, qsort_comparison_function_int16);
+ for (k = 0; k < spectrum->bs_stop_freq; k++)
+ sbr->k[2] += stop_dk[k];
+ } else if (spectrum->bs_stop_freq == 14) {
+ sbr->k[2] = 2*sbr->k[0];
+ } else if (spectrum->bs_stop_freq == 15) {
+ sbr->k[2] = 3*sbr->k[0];
+ } else {
+ av_log(ac->avctx, AV_LOG_ERROR,
+ "Invalid bs_stop_freq: %d\n", spectrum->bs_stop_freq);
+ return -1;
+ }
+ sbr->k[2] = FFMIN(64, sbr->k[2]);
+
+ // Requirements (14496-3 sp04 p205)
+ if (sbr->sample_rate <= 32000) {
+ max_qmf_subbands = 48;
+ } else if (sbr->sample_rate == 44100) {
+ max_qmf_subbands = 35;
+ } else if (sbr->sample_rate >= 48000)
+ max_qmf_subbands = 32;
+ else
+ av_assert0(0);
+
+ if (sbr->k[2] - sbr->k[0] > max_qmf_subbands) {
+ av_log(ac->avctx, AV_LOG_ERROR,
+ "Invalid bitstream, too many QMF subbands: %d\n", sbr->k[2] - sbr->k[0]);
+ return -1;
+ }
+
+ if (!spectrum->bs_freq_scale) {
+ int dk, k2diff;
+
+ dk = spectrum->bs_alter_scale + 1;
+ sbr->n_master = ((sbr->k[2] - sbr->k[0] + (dk&2)) >> dk) << 1;
+ if (check_n_master(ac->avctx, sbr->n_master, sbr->spectrum_params.bs_xover_band))
+ return -1;
+
+ for (k = 1; k <= sbr->n_master; k++)
+ sbr->f_master[k] = dk;
+
+ k2diff = sbr->k[2] - sbr->k[0] - sbr->n_master * dk;
+ if (k2diff < 0) {
+ sbr->f_master[1]--;
+ sbr->f_master[2]-= (k2diff < -1);
+ } else if (k2diff) {
+ sbr->f_master[sbr->n_master]++;
+ }
+
+ sbr->f_master[0] = sbr->k[0];
+ for (k = 1; k <= sbr->n_master; k++)
+ sbr->f_master[k] += sbr->f_master[k - 1];
+
+ } else {
+ int half_bands = 7 - spectrum->bs_freq_scale; // bs_freq_scale = {1,2,3}
+ int two_regions, num_bands_0;
+ int vdk0_max, vdk1_min;
+ int16_t vk0[49];
+#if USE_FIXED
+ int tmp, nz = 0;
+#endif /* USE_FIXED */
+
+ if (49 * sbr->k[2] > 110 * sbr->k[0]) {
+ two_regions = 1;
+ sbr->k[1] = 2 * sbr->k[0];
+ } else {
+ two_regions = 0;
+ sbr->k[1] = sbr->k[2];
+ }
+
+#if USE_FIXED
+ tmp = (sbr->k[1] << 23) / sbr->k[0];
+ while (tmp < 0x40000000) {
+ tmp <<= 1;
+ nz++;
+ }
+ tmp = fixed_log(tmp - 0x80000000);
+ tmp = (int)(((int64_t)tmp * CONST_RECIP_LN2 + 0x20000000) >> 30);
+ tmp = (((tmp + 0x80) >> 8) + ((8 - nz) << 23)) * half_bands;
+ num_bands_0 = ((tmp + 0x400000) >> 23) * 2;
+#else
+ num_bands_0 = lrintf(half_bands * log2f(sbr->k[1] / (float)sbr->k[0])) * 2;
+#endif /* USE_FIXED */
+
+ if (num_bands_0 <= 0) { // Requirements (14496-3 sp04 p205)
+ av_log(ac->avctx, AV_LOG_ERROR, "Invalid num_bands_0: %d\n", num_bands_0);
+ return -1;
+ }
+
+ vk0[0] = 0;
+
+ make_bands(vk0+1, sbr->k[0], sbr->k[1], num_bands_0);
+
+ AV_QSORT(vk0 + 1, num_bands_0, int16_t, qsort_comparison_function_int16);
+ vdk0_max = vk0[num_bands_0];
+
+ vk0[0] = sbr->k[0];
+ for (k = 1; k <= num_bands_0; k++) {
+ if (vk0[k] <= 0) { // Requirements (14496-3 sp04 p205)
+ av_log(ac->avctx, AV_LOG_ERROR, "Invalid vDk0[%d]: %d\n", k, vk0[k]);
+ return -1;
+ }
+ vk0[k] += vk0[k-1];
+ }
+
+ if (two_regions) {
+ int16_t vk1[49];
+#if USE_FIXED
+ int num_bands_1;
+
+ tmp = (sbr->k[2] << 23) / sbr->k[1];
+ nz = 0;
+ while (tmp < 0x40000000) {
+ tmp <<= 1;
+ nz++;
+ }
+ tmp = fixed_log(tmp - 0x80000000);
+ tmp = (int)(((int64_t)tmp * CONST_RECIP_LN2 + 0x20000000) >> 30);
+ tmp = (((tmp + 0x80) >> 8) + ((8 - nz) << 23)) * half_bands;
+ if (spectrum->bs_alter_scale)
+ tmp = (int)(((int64_t)tmp * CONST_076923 + 0x40000000) >> 31);
+ num_bands_1 = ((tmp + 0x400000) >> 23) * 2;
+#else
+ float invwarp = spectrum->bs_alter_scale ? 0.76923076923076923077f
+ : 1.0f; // bs_alter_scale = {0,1}
+ int num_bands_1 = lrintf(half_bands * invwarp *
+ log2f(sbr->k[2] / (float)sbr->k[1])) * 2;
+#endif /* USE_FIXED */
+ make_bands(vk1+1, sbr->k[1], sbr->k[2], num_bands_1);
+
+ vdk1_min = array_min_int16(vk1 + 1, num_bands_1);
+
+ if (vdk1_min < vdk0_max) {
+ int change;
+ AV_QSORT(vk1 + 1, num_bands_1, int16_t, qsort_comparison_function_int16);
+ change = FFMIN(vdk0_max - vk1[1], (vk1[num_bands_1] - vk1[1]) >> 1);
+ vk1[1] += change;
+ vk1[num_bands_1] -= change;
+ }
+
+ AV_QSORT(vk1 + 1, num_bands_1, int16_t, qsort_comparison_function_int16);
+
+ vk1[0] = sbr->k[1];
+ for (k = 1; k <= num_bands_1; k++) {
+ if (vk1[k] <= 0) { // Requirements (14496-3 sp04 p205)
+ av_log(ac->avctx, AV_LOG_ERROR, "Invalid vDk1[%d]: %d\n", k, vk1[k]);
+ return -1;
+ }
+ vk1[k] += vk1[k-1];
+ }
+
+ sbr->n_master = num_bands_0 + num_bands_1;
+ if (check_n_master(ac->avctx, sbr->n_master, sbr->spectrum_params.bs_xover_band))
+ return -1;
+ memcpy(&sbr->f_master[0], vk0,
+ (num_bands_0 + 1) * sizeof(sbr->f_master[0]));
+ memcpy(&sbr->f_master[num_bands_0 + 1], vk1 + 1,
+ num_bands_1 * sizeof(sbr->f_master[0]));
+
+ } else {
+ sbr->n_master = num_bands_0;
+ if (check_n_master(ac->avctx, sbr->n_master, sbr->spectrum_params.bs_xover_band))
+ return -1;
+ memcpy(sbr->f_master, vk0, (num_bands_0 + 1) * sizeof(sbr->f_master[0]));
+ }
+ }
+
+ return 0;
+}
+
+/// High Frequency Generation - Patch Construction (14496-3 sp04 p216 fig. 4.46)
+static int sbr_hf_calc_npatches(AACContext *ac, SpectralBandReplication *sbr)
+{
+ int i, k, last_k = -1, last_msb = -1, sb = 0;
+ int msb = sbr->k[0];
+ int usb = sbr->kx[1];
+ int goal_sb = ((1000 << 11) + (sbr->sample_rate >> 1)) / sbr->sample_rate;
+
+ sbr->num_patches = 0;
+
+ if (goal_sb < sbr->kx[1] + sbr->m[1]) {
+ for (k = 0; sbr->f_master[k] < goal_sb; k++) ;
+ } else
+ k = sbr->n_master;
+
+ do {
+ int odd = 0;
+ if (k == last_k && msb == last_msb) {
+ av_log(ac->avctx, AV_LOG_ERROR, "patch construction failed\n");
+ return AVERROR_INVALIDDATA;
+ }
+ last_k = k;
+ last_msb = msb;
+ for (i = k; i == k || sb > (sbr->k[0] - 1 + msb - odd); i--) {
+ sb = sbr->f_master[i];
+ odd = (sb + sbr->k[0]) & 1;
+ }
+
+ // Requirements (14496-3 sp04 p205) sets the maximum number of patches to 5.
+ // After this check the final number of patches can still be six which is
+ // illegal however the Coding Technologies decoder check stream has a final
+ // count of 6 patches
+ if (sbr->num_patches > 5) {
+ av_log(ac->avctx, AV_LOG_ERROR, "Too many patches: %d\n", sbr->num_patches);
+ return -1;
+ }
+
+ sbr->patch_num_subbands[sbr->num_patches] = FFMAX(sb - usb, 0);
+ sbr->patch_start_subband[sbr->num_patches] = sbr->k[0] - odd - sbr->patch_num_subbands[sbr->num_patches];
+
+ if (sbr->patch_num_subbands[sbr->num_patches] > 0) {
+ usb = sb;
+ msb = sb;
+ sbr->num_patches++;
+ } else
+ msb = sbr->kx[1];
+
+ if (sbr->f_master[k] - sb < 3)
+ k = sbr->n_master;
+ } while (sb != sbr->kx[1] + sbr->m[1]);
+
+ if (sbr->num_patches > 1 &&
+ sbr->patch_num_subbands[sbr->num_patches - 1] < 3)
+ sbr->num_patches--;
+
+ return 0;
+}
+
+/// Derived Frequency Band Tables (14496-3 sp04 p197)
+static int sbr_make_f_derived(AACContext *ac, SpectralBandReplication *sbr)
+{
+ int k, temp;
+#if USE_FIXED
+ int nz = 0;
+#endif /* USE_FIXED */
+
+ sbr->n[1] = sbr->n_master - sbr->spectrum_params.bs_xover_band;
+ sbr->n[0] = (sbr->n[1] + 1) >> 1;
+
+ memcpy(sbr->f_tablehigh, &sbr->f_master[sbr->spectrum_params.bs_xover_band],
+ (sbr->n[1] + 1) * sizeof(sbr->f_master[0]));
+ sbr->m[1] = sbr->f_tablehigh[sbr->n[1]] - sbr->f_tablehigh[0];
+ sbr->kx[1] = sbr->f_tablehigh[0];
+
+ // Requirements (14496-3 sp04 p205)
+ if (sbr->kx[1] + sbr->m[1] > 64) {
+ av_log(ac->avctx, AV_LOG_ERROR,
+ "Stop frequency border too high: %d\n", sbr->kx[1] + sbr->m[1]);
+ return -1;
+ }
+ if (sbr->kx[1] > 32) {
+ av_log(ac->avctx, AV_LOG_ERROR, "Start frequency border too high: %d\n", sbr->kx[1]);
+ return -1;
+ }
+
+ sbr->f_tablelow[0] = sbr->f_tablehigh[0];
+ temp = sbr->n[1] & 1;
+ for (k = 1; k <= sbr->n[0]; k++)
+ sbr->f_tablelow[k] = sbr->f_tablehigh[2 * k - temp];
+#if USE_FIXED
+ temp = (sbr->k[2] << 23) / sbr->kx[1];
+ while (temp < 0x40000000) {
+ temp <<= 1;
+ nz++;
+ }
+ temp = fixed_log(temp - 0x80000000);
+ temp = (int)(((int64_t)temp * CONST_RECIP_LN2 + 0x20000000) >> 30);
+ temp = (((temp + 0x80) >> 8) + ((8 - nz) << 23)) * sbr->spectrum_params.bs_noise_bands;
+
+ sbr->n_q = (temp + 0x400000) >> 23;
+ if (sbr->n_q < 1)
+ sbr->n_q = 1;
+#else
+ sbr->n_q = FFMAX(1, lrintf(sbr->spectrum_params.bs_noise_bands *
+ log2f(sbr->k[2] / (float)sbr->kx[1]))); // 0 <= bs_noise_bands <= 3
+#endif /* USE_FIXED */
+
+ if (sbr->n_q > 5) {
+ av_log(ac->avctx, AV_LOG_ERROR, "Too many noise floor scale factors: %d\n", sbr->n_q);
+ return -1;
+ }
+
+ sbr->f_tablenoise[0] = sbr->f_tablelow[0];
+ temp = 0;
+ for (k = 1; k <= sbr->n_q; k++) {
+ temp += (sbr->n[0] - temp) / (sbr->n_q + 1 - k);
+ sbr->f_tablenoise[k] = sbr->f_tablelow[temp];
+ }
+
+ if (sbr_hf_calc_npatches(ac, sbr) < 0)
+ return -1;
+
+ sbr_make_f_tablelim(sbr);
+
+ sbr->data[0].f_indexnoise = 0;
+ sbr->data[1].f_indexnoise = 0;
+
+ return 0;
+}
+
+static av_always_inline void get_bits1_vector(GetBitContext *gb, uint8_t *vec,
+ int elements)
+{
+ int i;
+ for (i = 0; i < elements; i++) {
+ vec[i] = get_bits1(gb);
+ }
+}
+
+/** ceil(log2(index+1)) */
+static const int8_t ceil_log2[] = {
+ 0, 1, 2, 2, 3, 3,
+};
+
+static int read_sbr_grid(AACContext *ac, SpectralBandReplication *sbr,
+ GetBitContext *gb, SBRData *ch_data)
+{
+ int i;
+ int bs_pointer = 0;
+ // frameLengthFlag ? 15 : 16; 960 sample length frames unsupported; this value is numTimeSlots
+ int abs_bord_trail = 16;
+ int num_rel_lead, num_rel_trail;
+ unsigned bs_num_env_old = ch_data->bs_num_env;
+
+ ch_data->bs_freq_res[0] = ch_data->bs_freq_res[ch_data->bs_num_env];
+ ch_data->bs_amp_res = sbr->bs_amp_res_header;
+ ch_data->t_env_num_env_old = ch_data->t_env[bs_num_env_old];
+
+ switch (ch_data->bs_frame_class = get_bits(gb, 2)) {
+ case FIXFIX:
+ ch_data->bs_num_env = 1 << get_bits(gb, 2);
+ num_rel_lead = ch_data->bs_num_env - 1;
+ if (ch_data->bs_num_env == 1)
+ ch_data->bs_amp_res = 0;
+
+ if (ch_data->bs_num_env > 4) {
+ av_log(ac->avctx, AV_LOG_ERROR,
+ "Invalid bitstream, too many SBR envelopes in FIXFIX type SBR frame: %d\n",
+ ch_data->bs_num_env);
+ return -1;
+ }
+
+ ch_data->t_env[0] = 0;
+ ch_data->t_env[ch_data->bs_num_env] = abs_bord_trail;
+
+ abs_bord_trail = (abs_bord_trail + (ch_data->bs_num_env >> 1)) /
+ ch_data->bs_num_env;
+ for (i = 0; i < num_rel_lead; i++)
+ ch_data->t_env[i + 1] = ch_data->t_env[i] + abs_bord_trail;
+
+ ch_data->bs_freq_res[1] = get_bits1(gb);
+ for (i = 1; i < ch_data->bs_num_env; i++)
+ ch_data->bs_freq_res[i + 1] = ch_data->bs_freq_res[1];
+ break;
+ case FIXVAR:
+ abs_bord_trail += get_bits(gb, 2);
+ num_rel_trail = get_bits(gb, 2);
+ ch_data->bs_num_env = num_rel_trail + 1;
+ ch_data->t_env[0] = 0;
+ ch_data->t_env[ch_data->bs_num_env] = abs_bord_trail;
+
+ for (i = 0; i < num_rel_trail; i++)
+ ch_data->t_env[ch_data->bs_num_env - 1 - i] =
+ ch_data->t_env[ch_data->bs_num_env - i] - 2 * get_bits(gb, 2) - 2;
+
+ bs_pointer = get_bits(gb, ceil_log2[ch_data->bs_num_env]);
+
+ for (i = 0; i < ch_data->bs_num_env; i++)
+ ch_data->bs_freq_res[ch_data->bs_num_env - i] = get_bits1(gb);
+ break;
+ case VARFIX:
+ ch_data->t_env[0] = get_bits(gb, 2);
+ num_rel_lead = get_bits(gb, 2);
+ ch_data->bs_num_env = num_rel_lead + 1;
+ ch_data->t_env[ch_data->bs_num_env] = abs_bord_trail;
+
+ for (i = 0; i < num_rel_lead; i++)
+ ch_data->t_env[i + 1] = ch_data->t_env[i] + 2 * get_bits(gb, 2) + 2;
+
+ bs_pointer = get_bits(gb, ceil_log2[ch_data->bs_num_env]);
+
+ get_bits1_vector(gb, ch_data->bs_freq_res + 1, ch_data->bs_num_env);
+ break;
+ case VARVAR:
+ ch_data->t_env[0] = get_bits(gb, 2);
+ abs_bord_trail += get_bits(gb, 2);
+ num_rel_lead = get_bits(gb, 2);
+ num_rel_trail = get_bits(gb, 2);
+ ch_data->bs_num_env = num_rel_lead + num_rel_trail + 1;
+
+ if (ch_data->bs_num_env > 5) {
+ av_log(ac->avctx, AV_LOG_ERROR,
+ "Invalid bitstream, too many SBR envelopes in VARVAR type SBR frame: %d\n",
+ ch_data->bs_num_env);
+ return -1;
+ }
+
+ ch_data->t_env[ch_data->bs_num_env] = abs_bord_trail;
+
+ for (i = 0; i < num_rel_lead; i++)
+ ch_data->t_env[i + 1] = ch_data->t_env[i] + 2 * get_bits(gb, 2) + 2;
+ for (i = 0; i < num_rel_trail; i++)
+ ch_data->t_env[ch_data->bs_num_env - 1 - i] =
+ ch_data->t_env[ch_data->bs_num_env - i] - 2 * get_bits(gb, 2) - 2;
+
+ bs_pointer = get_bits(gb, ceil_log2[ch_data->bs_num_env]);
+
+ get_bits1_vector(gb, ch_data->bs_freq_res + 1, ch_data->bs_num_env);
+ break;
+ }
+
+ av_assert0(bs_pointer >= 0);
+ if (bs_pointer > ch_data->bs_num_env + 1) {
+ av_log(ac->avctx, AV_LOG_ERROR,
+ "Invalid bitstream, bs_pointer points to a middle noise border outside the time borders table: %d\n",
+ bs_pointer);
+ return -1;
+ }
+
+ for (i = 1; i <= ch_data->bs_num_env; i++) {
+ if (ch_data->t_env[i-1] >= ch_data->t_env[i]) {
+ av_log(ac->avctx, AV_LOG_ERROR, "Not strictly monotone time borders\n");
+ return -1;
+ }
+ }
+
+ ch_data->bs_num_noise = (ch_data->bs_num_env > 1) + 1;
+
+ ch_data->t_q[0] = ch_data->t_env[0];
+ ch_data->t_q[ch_data->bs_num_noise] = ch_data->t_env[ch_data->bs_num_env];
+ if (ch_data->bs_num_noise > 1) {
+ int idx;
+ if (ch_data->bs_frame_class == FIXFIX) {
+ idx = ch_data->bs_num_env >> 1;
+ } else if (ch_data->bs_frame_class & 1) { // FIXVAR or VARVAR
+ idx = ch_data->bs_num_env - FFMAX(bs_pointer - 1, 1);
+ } else { // VARFIX
+ if (!bs_pointer)
+ idx = 1;
+ else if (bs_pointer == 1)
+ idx = ch_data->bs_num_env - 1;
+ else // bs_pointer > 1
+ idx = bs_pointer - 1;
+ }
+ ch_data->t_q[1] = ch_data->t_env[idx];
+ }
+
+ ch_data->e_a[0] = -(ch_data->e_a[1] != bs_num_env_old); // l_APrev
+ ch_data->e_a[1] = -1;
+ if ((ch_data->bs_frame_class & 1) && bs_pointer) { // FIXVAR or VARVAR and bs_pointer != 0
+ ch_data->e_a[1] = ch_data->bs_num_env + 1 - bs_pointer;
+ } else if ((ch_data->bs_frame_class == 2) && (bs_pointer > 1)) // VARFIX and bs_pointer > 1
+ ch_data->e_a[1] = bs_pointer - 1;
+
+ return 0;
+}
+
+static void copy_sbr_grid(SBRData *dst, const SBRData *src) {
+ //These variables are saved from the previous frame rather than copied
+ dst->bs_freq_res[0] = dst->bs_freq_res[dst->bs_num_env];
+ dst->t_env_num_env_old = dst->t_env[dst->bs_num_env];
+ dst->e_a[0] = -(dst->e_a[1] != dst->bs_num_env);
+
+ //These variables are read from the bitstream and therefore copied
+ memcpy(dst->bs_freq_res+1, src->bs_freq_res+1, sizeof(dst->bs_freq_res)-sizeof(*dst->bs_freq_res));
+ memcpy(dst->t_env, src->t_env, sizeof(dst->t_env));
+ memcpy(dst->t_q, src->t_q, sizeof(dst->t_q));
+ dst->bs_num_env = src->bs_num_env;
+ dst->bs_amp_res = src->bs_amp_res;
+ dst->bs_num_noise = src->bs_num_noise;
+ dst->bs_frame_class = src->bs_frame_class;
+ dst->e_a[1] = src->e_a[1];
+}
+
+/// Read how the envelope and noise floor data is delta coded
+static void read_sbr_dtdf(SpectralBandReplication *sbr, GetBitContext *gb,
+ SBRData *ch_data)
+{
+ get_bits1_vector(gb, ch_data->bs_df_env, ch_data->bs_num_env);
+ get_bits1_vector(gb, ch_data->bs_df_noise, ch_data->bs_num_noise);
+}
+
+/// Read inverse filtering data
+static void read_sbr_invf(SpectralBandReplication *sbr, GetBitContext *gb,
+ SBRData *ch_data)
+{
+ int i;
+
+ memcpy(ch_data->bs_invf_mode[1], ch_data->bs_invf_mode[0], 5 * sizeof(uint8_t));
+ for (i = 0; i < sbr->n_q; i++)
+ ch_data->bs_invf_mode[0][i] = get_bits(gb, 2);
+}
+
+static int read_sbr_envelope(AACContext *ac, SpectralBandReplication *sbr, GetBitContext *gb,
+ SBRData *ch_data, int ch)
+{
+ int bits;
+ int i, j, k;
+ VLC_TYPE (*t_huff)[2], (*f_huff)[2];
+ int t_lav, f_lav;
+ const int delta = (ch == 1 && sbr->bs_coupling == 1) + 1;
+ const int odd = sbr->n[1] & 1;
+
+ if (sbr->bs_coupling && ch) {
+ if (ch_data->bs_amp_res) {
+ bits = 5;
+ t_huff = vlc_sbr[T_HUFFMAN_ENV_BAL_3_0DB].table;
+ t_lav = vlc_sbr_lav[T_HUFFMAN_ENV_BAL_3_0DB];
+ f_huff = vlc_sbr[F_HUFFMAN_ENV_BAL_3_0DB].table;
+ f_lav = vlc_sbr_lav[F_HUFFMAN_ENV_BAL_3_0DB];
+ } else {
+ bits = 6;
+ t_huff = vlc_sbr[T_HUFFMAN_ENV_BAL_1_5DB].table;
+ t_lav = vlc_sbr_lav[T_HUFFMAN_ENV_BAL_1_5DB];
+ f_huff = vlc_sbr[F_HUFFMAN_ENV_BAL_1_5DB].table;
+ f_lav = vlc_sbr_lav[F_HUFFMAN_ENV_BAL_1_5DB];
+ }
+ } else {
+ if (ch_data->bs_amp_res) {
+ bits = 6;
+ t_huff = vlc_sbr[T_HUFFMAN_ENV_3_0DB].table;
+ t_lav = vlc_sbr_lav[T_HUFFMAN_ENV_3_0DB];
+ f_huff = vlc_sbr[F_HUFFMAN_ENV_3_0DB].table;
+ f_lav = vlc_sbr_lav[F_HUFFMAN_ENV_3_0DB];
+ } else {
+ bits = 7;
+ t_huff = vlc_sbr[T_HUFFMAN_ENV_1_5DB].table;
+ t_lav = vlc_sbr_lav[T_HUFFMAN_ENV_1_5DB];
+ f_huff = vlc_sbr[F_HUFFMAN_ENV_1_5DB].table;
+ f_lav = vlc_sbr_lav[F_HUFFMAN_ENV_1_5DB];
+ }
+ }
+
+ for (i = 0; i < ch_data->bs_num_env; i++) {
+ if (ch_data->bs_df_env[i]) {
+ // bs_freq_res[0] == bs_freq_res[bs_num_env] from prev frame
+ if (ch_data->bs_freq_res[i + 1] == ch_data->bs_freq_res[i]) {
+ for (j = 0; j < sbr->n[ch_data->bs_freq_res[i + 1]]; j++) {
+ ch_data->env_facs_q[i + 1][j] = ch_data->env_facs_q[i][j] + delta * (get_vlc2(gb, t_huff, 9, 3) - t_lav);
+ if (ch_data->env_facs_q[i + 1][j] > 127U) {
+ av_log(ac->avctx, AV_LOG_ERROR, "env_facs_q %d is invalid\n", ch_data->env_facs_q[i + 1][j]);
+ return AVERROR_INVALIDDATA;
+ }
+ }
+ } else if (ch_data->bs_freq_res[i + 1]) {
+ for (j = 0; j < sbr->n[ch_data->bs_freq_res[i + 1]]; j++) {
+ k = (j + odd) >> 1; // find k such that f_tablelow[k] <= f_tablehigh[j] < f_tablelow[k + 1]
+ ch_data->env_facs_q[i + 1][j] = ch_data->env_facs_q[i][k] + delta * (get_vlc2(gb, t_huff, 9, 3) - t_lav);
+ if (ch_data->env_facs_q[i + 1][j] > 127U) {
+ av_log(ac->avctx, AV_LOG_ERROR, "env_facs_q %d is invalid\n", ch_data->env_facs_q[i + 1][j]);
+ return AVERROR_INVALIDDATA;
+ }
+ }
+ } else {
+ for (j = 0; j < sbr->n[ch_data->bs_freq_res[i + 1]]; j++) {
+ k = j ? 2*j - odd : 0; // find k such that f_tablehigh[k] == f_tablelow[j]
+ ch_data->env_facs_q[i + 1][j] = ch_data->env_facs_q[i][k] + delta * (get_vlc2(gb, t_huff, 9, 3) - t_lav);
+ if (ch_data->env_facs_q[i + 1][j] > 127U) {
+ av_log(ac->avctx, AV_LOG_ERROR, "env_facs_q %d is invalid\n", ch_data->env_facs_q[i + 1][j]);
+ return AVERROR_INVALIDDATA;
+ }
+ }
+ }
+ } else {
+ ch_data->env_facs_q[i + 1][0] = delta * get_bits(gb, bits); // bs_env_start_value_balance
+ for (j = 1; j < sbr->n[ch_data->bs_freq_res[i + 1]]; j++) {
+ ch_data->env_facs_q[i + 1][j] = ch_data->env_facs_q[i + 1][j - 1] + delta * (get_vlc2(gb, f_huff, 9, 3) - f_lav);
+ if (ch_data->env_facs_q[i + 1][j] > 127U) {
+ av_log(ac->avctx, AV_LOG_ERROR, "env_facs_q %d is invalid\n", ch_data->env_facs_q[i + 1][j]);
+ return AVERROR_INVALIDDATA;
+ }
+ }
+ }
+ }
+
+ //assign 0th elements of env_facs_q from last elements
+ memcpy(ch_data->env_facs_q[0], ch_data->env_facs_q[ch_data->bs_num_env],
+ sizeof(ch_data->env_facs_q[0]));
+
+ return 0;
+}
+
+static int read_sbr_noise(AACContext *ac, SpectralBandReplication *sbr, GetBitContext *gb,
+ SBRData *ch_data, int ch)
+{
+ int i, j;
+ VLC_TYPE (*t_huff)[2], (*f_huff)[2];
+ int t_lav, f_lav;
+ int delta = (ch == 1 && sbr->bs_coupling == 1) + 1;
+
+ if (sbr->bs_coupling && ch) {
+ t_huff = vlc_sbr[T_HUFFMAN_NOISE_BAL_3_0DB].table;
+ t_lav = vlc_sbr_lav[T_HUFFMAN_NOISE_BAL_3_0DB];
+ f_huff = vlc_sbr[F_HUFFMAN_ENV_BAL_3_0DB].table;
+ f_lav = vlc_sbr_lav[F_HUFFMAN_ENV_BAL_3_0DB];
+ } else {
+ t_huff = vlc_sbr[T_HUFFMAN_NOISE_3_0DB].table;
+ t_lav = vlc_sbr_lav[T_HUFFMAN_NOISE_3_0DB];
+ f_huff = vlc_sbr[F_HUFFMAN_ENV_3_0DB].table;
+ f_lav = vlc_sbr_lav[F_HUFFMAN_ENV_3_0DB];
+ }
+
+ for (i = 0; i < ch_data->bs_num_noise; i++) {
+ if (ch_data->bs_df_noise[i]) {
+ for (j = 0; j < sbr->n_q; j++) {
+ ch_data->noise_facs_q[i + 1][j] = ch_data->noise_facs_q[i][j] + delta * (get_vlc2(gb, t_huff, 9, 2) - t_lav);
+ if (ch_data->noise_facs_q[i + 1][j] > 30U) {
+ av_log(ac->avctx, AV_LOG_ERROR, "noise_facs_q %d is invalid\n", ch_data->noise_facs_q[i + 1][j]);
+ return AVERROR_INVALIDDATA;
+ }
+ }
+ } else {
+ ch_data->noise_facs_q[i + 1][0] = delta * get_bits(gb, 5); // bs_noise_start_value_balance or bs_noise_start_value_level
+ for (j = 1; j < sbr->n_q; j++) {
+ ch_data->noise_facs_q[i + 1][j] = ch_data->noise_facs_q[i + 1][j - 1] + delta * (get_vlc2(gb, f_huff, 9, 3) - f_lav);
+ if (ch_data->noise_facs_q[i + 1][j] > 30U) {
+ av_log(ac->avctx, AV_LOG_ERROR, "noise_facs_q %d is invalid\n", ch_data->noise_facs_q[i + 1][j]);
+ return AVERROR_INVALIDDATA;
+ }
+ }
+ }
+ }
+
+ //assign 0th elements of noise_facs_q from last elements
+ memcpy(ch_data->noise_facs_q[0], ch_data->noise_facs_q[ch_data->bs_num_noise],
+ sizeof(ch_data->noise_facs_q[0]));
+ return 0;
+}
+
+static void read_sbr_extension(AACContext *ac, SpectralBandReplication *sbr,
+ GetBitContext *gb,
+ int bs_extension_id, int *num_bits_left)
+{
+ switch (bs_extension_id) {
+ case EXTENSION_ID_PS:
+ if (!ac->oc[1].m4ac.ps) {
+ av_log(ac->avctx, AV_LOG_ERROR, "Parametric Stereo signaled to be not-present but was found in the bitstream.\n");
+ skip_bits_long(gb, *num_bits_left); // bs_fill_bits
+ *num_bits_left = 0;
+ } else {
- #if 1
+ *num_bits_left -= AAC_RENAME(ff_ps_read_data)(ac->avctx, gb, &sbr->ps, *num_bits_left);
+ ac->avctx->profile = FF_PROFILE_AAC_HE_V2;
- #else
- avpriv_report_missing_feature(ac->avctx, "Parametric Stereo");
- skip_bits_long(gb, *num_bits_left); // bs_fill_bits
- *num_bits_left = 0;
- #endif
+ }
+ break;
+ default:
+ // some files contain 0-padding
+ if (bs_extension_id || *num_bits_left > 16 || show_bits(gb, *num_bits_left))
+ avpriv_request_sample(ac->avctx, "Reserved SBR extensions");
+ skip_bits_long(gb, *num_bits_left); // bs_fill_bits
+ *num_bits_left = 0;
+ break;
+ }
+}
+
+static int read_sbr_single_channel_element(AACContext *ac,
+ SpectralBandReplication *sbr,
+ GetBitContext *gb)
+{
+ int ret;
+
+ if (get_bits1(gb)) // bs_data_extra
+ skip_bits(gb, 4); // bs_reserved
+
+ if (read_sbr_grid(ac, sbr, gb, &sbr->data[0]))
+ return -1;
+ read_sbr_dtdf(sbr, gb, &sbr->data[0]);
+ read_sbr_invf(sbr, gb, &sbr->data[0]);
+ if((ret = read_sbr_envelope(ac, sbr, gb, &sbr->data[0], 0)) < 0)
+ return ret;
+ if((ret = read_sbr_noise(ac, sbr, gb, &sbr->data[0], 0)) < 0)
+ return ret;
+
+ if ((sbr->data[0].bs_add_harmonic_flag = get_bits1(gb)))
+ get_bits1_vector(gb, sbr->data[0].bs_add_harmonic, sbr->n[1]);
+
+ return 0;
+}
+
+static int read_sbr_channel_pair_element(AACContext *ac,
+ SpectralBandReplication *sbr,
+ GetBitContext *gb)
+{
+ int ret;
+
+ if (get_bits1(gb)) // bs_data_extra
+ skip_bits(gb, 8); // bs_reserved
+
+ if ((sbr->bs_coupling = get_bits1(gb))) {
+ if (read_sbr_grid(ac, sbr, gb, &sbr->data[0]))
+ return -1;
+ copy_sbr_grid(&sbr->data[1], &sbr->data[0]);
+ read_sbr_dtdf(sbr, gb, &sbr->data[0]);
+ read_sbr_dtdf(sbr, gb, &sbr->data[1]);
+ read_sbr_invf(sbr, gb, &sbr->data[0]);
+ memcpy(sbr->data[1].bs_invf_mode[1], sbr->data[1].bs_invf_mode[0], sizeof(sbr->data[1].bs_invf_mode[0]));
+ memcpy(sbr->data[1].bs_invf_mode[0], sbr->data[0].bs_invf_mode[0], sizeof(sbr->data[1].bs_invf_mode[0]));
+ if((ret = read_sbr_envelope(ac, sbr, gb, &sbr->data[0], 0)) < 0)
+ return ret;
+ if((ret = read_sbr_noise(ac, sbr, gb, &sbr->data[0], 0)) < 0)
+ return ret;
+ if((ret = read_sbr_envelope(ac, sbr, gb, &sbr->data[1], 1)) < 0)
+ return ret;
+ if((ret = read_sbr_noise(ac, sbr, gb, &sbr->data[1], 1)) < 0)
+ return ret;
+ } else {
+ if (read_sbr_grid(ac, sbr, gb, &sbr->data[0]) ||
+ read_sbr_grid(ac, sbr, gb, &sbr->data[1]))
+ return -1;
+ read_sbr_dtdf(sbr, gb, &sbr->data[0]);
+ read_sbr_dtdf(sbr, gb, &sbr->data[1]);
+ read_sbr_invf(sbr, gb, &sbr->data[0]);
+ read_sbr_invf(sbr, gb, &sbr->data[1]);
+ if((ret = read_sbr_envelope(ac, sbr, gb, &sbr->data[0], 0)) < 0)
+ return ret;
+ if((ret = read_sbr_envelope(ac, sbr, gb, &sbr->data[1], 1)) < 0)
+ return ret;
+ if((ret = read_sbr_noise(ac, sbr, gb, &sbr->data[0], 0)) < 0)
+ return ret;
+ if((ret = read_sbr_noise(ac, sbr, gb, &sbr->data[1], 1)) < 0)
+ return ret;
+ }
+
+ if ((sbr->data[0].bs_add_harmonic_flag = get_bits1(gb)))
+ get_bits1_vector(gb, sbr->data[0].bs_add_harmonic, sbr->n[1]);
+ if ((sbr->data[1].bs_add_harmonic_flag = get_bits1(gb)))
+ get_bits1_vector(gb, sbr->data[1].bs_add_harmonic, sbr->n[1]);
+
+ return 0;
+}
+
+static unsigned int read_sbr_data(AACContext *ac, SpectralBandReplication *sbr,
+ GetBitContext *gb, int id_aac)
+{
+ unsigned int cnt = get_bits_count(gb);
+
+ sbr->id_aac = id_aac;
+ sbr->ready_for_dequant = 1;
+
+ if (id_aac == TYPE_SCE || id_aac == TYPE_CCE) {
+ if (read_sbr_single_channel_element(ac, sbr, gb)) {
+ sbr_turnoff(sbr);
+ return get_bits_count(gb) - cnt;
+ }
+ } else if (id_aac == TYPE_CPE) {
+ if (read_sbr_channel_pair_element(ac, sbr, gb)) {
+ sbr_turnoff(sbr);
+ return get_bits_count(gb) - cnt;
+ }
+ } else {
+ av_log(ac->avctx, AV_LOG_ERROR,
+ "Invalid bitstream - cannot apply SBR to element type %d\n", id_aac);
+ sbr_turnoff(sbr);
+ return get_bits_count(gb) - cnt;
+ }
+ if (get_bits1(gb)) { // bs_extended_data
+ int num_bits_left = get_bits(gb, 4); // bs_extension_size
+ if (num_bits_left == 15)
+ num_bits_left += get_bits(gb, 8); // bs_esc_count
+
+ num_bits_left <<= 3;
+ while (num_bits_left > 7) {
+ num_bits_left -= 2;
+ read_sbr_extension(ac, sbr, gb, get_bits(gb, 2), &num_bits_left); // bs_extension_id
+ }
+ if (num_bits_left < 0) {
+ av_log(ac->avctx, AV_LOG_ERROR, "SBR Extension over read.\n");
+ }
+ if (num_bits_left > 0)
+ skip_bits(gb, num_bits_left);
+ }
+
+ return get_bits_count(gb) - cnt;
+}
+
+static void sbr_reset(AACContext *ac, SpectralBandReplication *sbr)
+{
+ int err;
+ err = sbr_make_f_master(ac, sbr, &sbr->spectrum_params);
+ if (err >= 0)
+ err = sbr_make_f_derived(ac, sbr);
+ if (err < 0) {
+ av_log(ac->avctx, AV_LOG_ERROR,
+ "SBR reset failed. Switching SBR to pure upsampling mode.\n");
+ sbr_turnoff(sbr);
+ }
+}
+
+/**
+ * Decode Spectral Band Replication extension data; reference: table 4.55.
+ *
+ * @param crc flag indicating the presence of CRC checksum
+ * @param cnt length of TYPE_FIL syntactic element in bytes
+ *
+ * @return Returns number of bytes consumed from the TYPE_FIL element.
+ */
+int AAC_RENAME(ff_decode_sbr_extension)(AACContext *ac, SpectralBandReplication *sbr,
+ GetBitContext *gb_host, int crc, int cnt, int id_aac)
+{
+ unsigned int num_sbr_bits = 0, num_align_bits;
+ unsigned bytes_read;
+ GetBitContext gbc = *gb_host, *gb = &gbc;
+ skip_bits_long(gb_host, cnt*8 - 4);
+
+ sbr->reset = 0;
+
+ if (!sbr->sample_rate)
+ sbr->sample_rate = 2 * ac->oc[1].m4ac.sample_rate; //TODO use the nominal sample rate for arbitrary sample rate support
+ if (!ac->oc[1].m4ac.ext_sample_rate)
+ ac->oc[1].m4ac.ext_sample_rate = 2 * ac->oc[1].m4ac.sample_rate;
+
+ if (crc) {
+ skip_bits(gb, 10); // bs_sbr_crc_bits; TODO - implement CRC check
+ num_sbr_bits += 10;
+ }
+
+ //Save some state from the previous frame.
+ sbr->kx[0] = sbr->kx[1];
+ sbr->m[0] = sbr->m[1];
+ sbr->kx_and_m_pushed = 1;
+
+ num_sbr_bits++;
+ if (get_bits1(gb)) // bs_header_flag
+ num_sbr_bits += read_sbr_header(sbr, gb);
+
+ if (sbr->reset)
+ sbr_reset(ac, sbr);
+
+ if (sbr->start)
+ num_sbr_bits += read_sbr_data(ac, sbr, gb, id_aac);
+
+ num_align_bits = ((cnt << 3) - 4 - num_sbr_bits) & 7;
+ bytes_read = ((num_sbr_bits + num_align_bits + 4) >> 3);
+
+ if (bytes_read > cnt) {
+ av_log(ac->avctx, AV_LOG_ERROR,
+ "Expected to read %d SBR bytes actually read %d.\n", cnt, bytes_read);
+ }
+ return cnt;
+}
+
+/**
+ * Analysis QMF Bank (14496-3 sp04 p206)
+ *
+ * @param x pointer to the beginning of the first sample window
+ * @param W array of complex-valued samples split into subbands
+ */
+#ifndef sbr_qmf_analysis
+#if USE_FIXED
+static void sbr_qmf_analysis(AVFixedDSPContext *dsp, FFTContext *mdct,
+#else
+static void sbr_qmf_analysis(AVFloatDSPContext *dsp, FFTContext *mdct,
+#endif /* USE_FIXED */
+ SBRDSPContext *sbrdsp, const INTFLOAT *in, INTFLOAT *x,
+ INTFLOAT z[320], INTFLOAT W[2][32][32][2], int buf_idx)
+{
+ int i;
+#if USE_FIXED
+ int j;
+#endif
+ memcpy(x , x+1024, (320-32)*sizeof(x[0]));
+ memcpy(x+288, in, 1024*sizeof(x[0]));
+ for (i = 0; i < 32; i++) { // numTimeSlots*RATE = 16*2 as 960 sample frames
+ // are not supported
+ dsp->vector_fmul_reverse(z, sbr_qmf_window_ds, x, 320);
+ sbrdsp->sum64x5(z);
+ sbrdsp->qmf_pre_shuffle(z);
+#if USE_FIXED
+ for (j = 64; j < 128; j++) {
+ if (z[j] > 1<<24) {
+ av_log(NULL, AV_LOG_WARNING,
+ "sbr_qmf_analysis: value %09d too large, setting to %09d\n",
+ z[j], 1<<24);
+ z[j] = 1<<24;
+ } else if (z[j] < -(1<<24)) {
+ av_log(NULL, AV_LOG_WARNING,
+ "sbr_qmf_analysis: value %09d too small, setting to %09d\n",
+ z[j], -(1<<24));
+ z[j] = -(1<<24);
+ }
+ }
+#endif
+ mdct->imdct_half(mdct, z, z+64);
+ sbrdsp->qmf_post_shuffle(W[buf_idx][i], z);
+ x += 32;
+ }
+}
+#endif
+
+/**
+ * Synthesis QMF Bank (14496-3 sp04 p206) and Downsampled Synthesis QMF Bank
+ * (14496-3 sp04 p206)
+ */
+#ifndef sbr_qmf_synthesis
+static void sbr_qmf_synthesis(FFTContext *mdct,
+#if USE_FIXED
+ SBRDSPContext *sbrdsp, AVFixedDSPContext *dsp,
+#else
+ SBRDSPContext *sbrdsp, AVFloatDSPContext *dsp,
+#endif /* USE_FIXED */
+ INTFLOAT *out, INTFLOAT X[2][38][64],
+ INTFLOAT mdct_buf[2][64],
+ INTFLOAT *v0, int *v_off, const unsigned int div)
+{
+ int i, n;
+ const INTFLOAT *sbr_qmf_window = div ? sbr_qmf_window_ds : sbr_qmf_window_us;
+ const int step = 128 >> div;
+ INTFLOAT *v;
+ for (i = 0; i < 32; i++) {
+ if (*v_off < step) {
+ int saved_samples = (1280 - 128) >> div;
+ memcpy(&v0[SBR_SYNTHESIS_BUF_SIZE - saved_samples], v0, saved_samples * sizeof(INTFLOAT));
+ *v_off = SBR_SYNTHESIS_BUF_SIZE - saved_samples - step;
+ } else {
+ *v_off -= step;
+ }
+ v = v0 + *v_off;
+ if (div) {
+ for (n = 0; n < 32; n++) {
+ X[0][i][ n] = -X[0][i][n];
+ X[0][i][32+n] = X[1][i][31-n];
+ }
+ mdct->imdct_half(mdct, mdct_buf[0], X[0][i]);
+ sbrdsp->qmf_deint_neg(v, mdct_buf[0]);
+ } else {
+ sbrdsp->neg_odd_64(X[1][i]);
+ mdct->imdct_half(mdct, mdct_buf[0], X[0][i]);
+ mdct->imdct_half(mdct, mdct_buf[1], X[1][i]);
+ sbrdsp->qmf_deint_bfly(v, mdct_buf[1], mdct_buf[0]);
+ }
+ dsp->vector_fmul (out, v , sbr_qmf_window , 64 >> div);
+ dsp->vector_fmul_add(out, v + ( 192 >> div), sbr_qmf_window + ( 64 >> div), out , 64 >> div);
+ dsp->vector_fmul_add(out, v + ( 256 >> div), sbr_qmf_window + (128 >> div), out , 64 >> div);
+ dsp->vector_fmul_add(out, v + ( 448 >> div), sbr_qmf_window + (192 >> div), out , 64 >> div);
+ dsp->vector_fmul_add(out, v + ( 512 >> div), sbr_qmf_window + (256 >> div), out , 64 >> div);
+ dsp->vector_fmul_add(out, v + ( 704 >> div), sbr_qmf_window + (320 >> div), out , 64 >> div);
+ dsp->vector_fmul_add(out, v + ( 768 >> div), sbr_qmf_window + (384 >> div), out , 64 >> div);
+ dsp->vector_fmul_add(out, v + ( 960 >> div), sbr_qmf_window + (448 >> div), out , 64 >> div);
+ dsp->vector_fmul_add(out, v + (1024 >> div), sbr_qmf_window + (512 >> div), out , 64 >> div);
+ dsp->vector_fmul_add(out, v + (1216 >> div), sbr_qmf_window + (576 >> div), out , 64 >> div);
+ out += 64 >> div;
+ }
+}
+#endif
+
+/// Generate the subband filtered lowband
+static int sbr_lf_gen(AACContext *ac, SpectralBandReplication *sbr,
+ INTFLOAT X_low[32][40][2], const INTFLOAT W[2][32][32][2],
+ int buf_idx)
+{
+ int i, k;
+ const int t_HFGen = 8;
+ const int i_f = 32;
+ memset(X_low, 0, 32*sizeof(*X_low));
+ for (k = 0; k < sbr->kx[1]; k++) {
+ for (i = t_HFGen; i < i_f + t_HFGen; i++) {
+ X_low[k][i][0] = W[buf_idx][i - t_HFGen][k][0];
+ X_low[k][i][1] = W[buf_idx][i - t_HFGen][k][1];
+ }
+ }
+ buf_idx = 1-buf_idx;
+ for (k = 0; k < sbr->kx[0]; k++) {
+ for (i = 0; i < t_HFGen; i++) {
+ X_low[k][i][0] = W[buf_idx][i + i_f - t_HFGen][k][0];
+ X_low[k][i][1] = W[buf_idx][i + i_f - t_HFGen][k][1];
+ }
+ }
+ return 0;
+}
+
+/// High Frequency Generator (14496-3 sp04 p215)
+static int sbr_hf_gen(AACContext *ac, SpectralBandReplication *sbr,
+ INTFLOAT X_high[64][40][2], const INTFLOAT X_low[32][40][2],
+ const INTFLOAT (*alpha0)[2], const INTFLOAT (*alpha1)[2],
+ const INTFLOAT bw_array[5], const uint8_t *t_env,
+ int bs_num_env)
+{
+ int j, x;
+ int g = 0;
+ int k = sbr->kx[1];
+ for (j = 0; j < sbr->num_patches; j++) {
+ for (x = 0; x < sbr->patch_num_subbands[j]; x++, k++) {
+ const int p = sbr->patch_start_subband[j] + x;
+ while (g <= sbr->n_q && k >= sbr->f_tablenoise[g])
+ g++;
+ g--;
+
+ if (g < 0) {
+ av_log(ac->avctx, AV_LOG_ERROR,
+ "ERROR : no subband found for frequency %d\n", k);
+ return -1;
+ }
+
+ sbr->dsp.hf_gen(X_high[k] + ENVELOPE_ADJUSTMENT_OFFSET,
+ X_low[p] + ENVELOPE_ADJUSTMENT_OFFSET,
+ alpha0[p], alpha1[p], bw_array[g],
+ 2 * t_env[0], 2 * t_env[bs_num_env]);
+ }
+ }
+ if (k < sbr->m[1] + sbr->kx[1])
+ memset(X_high + k, 0, (sbr->m[1] + sbr->kx[1] - k) * sizeof(*X_high));
+
+ return 0;
+}
+
+/// Generate the subband filtered lowband
+static int sbr_x_gen(SpectralBandReplication *sbr, INTFLOAT X[2][38][64],
+ const INTFLOAT Y0[38][64][2], const INTFLOAT Y1[38][64][2],
+ const INTFLOAT X_low[32][40][2], int ch)
+{
+ int k, i;
+ const int i_f = 32;
+ const int i_Temp = FFMAX(2*sbr->data[ch].t_env_num_env_old - i_f, 0);
+ memset(X, 0, 2*sizeof(*X));
+ for (k = 0; k < sbr->kx[0]; k++) {
+ for (i = 0; i < i_Temp; i++) {
+ X[0][i][k] = X_low[k][i + ENVELOPE_ADJUSTMENT_OFFSET][0];
+ X[1][i][k] = X_low[k][i + ENVELOPE_ADJUSTMENT_OFFSET][1];
+ }
+ }
+ for (; k < sbr->kx[0] + sbr->m[0]; k++) {
+ for (i = 0; i < i_Temp; i++) {
+ X[0][i][k] = Y0[i + i_f][k][0];
+ X[1][i][k] = Y0[i + i_f][k][1];
+ }
+ }
+
+ for (k = 0; k < sbr->kx[1]; k++) {
+ for (i = i_Temp; i < 38; i++) {
+ X[0][i][k] = X_low[k][i + ENVELOPE_ADJUSTMENT_OFFSET][0];
+ X[1][i][k] = X_low[k][i + ENVELOPE_ADJUSTMENT_OFFSET][1];
+ }
+ }
+ for (; k < sbr->kx[1] + sbr->m[1]; k++) {
+ for (i = i_Temp; i < i_f; i++) {
+ X[0][i][k] = Y1[i][k][0];
+ X[1][i][k] = Y1[i][k][1];
+ }
+ }
+ return 0;
+}
+
+/** High Frequency Adjustment (14496-3 sp04 p217) and Mapping
+ * (14496-3 sp04 p217)
+ */
+static int sbr_mapping(AACContext *ac, SpectralBandReplication *sbr,
+ SBRData *ch_data, int e_a[2])
+{
+ int e, i, m;
+
+ memset(ch_data->s_indexmapped[1], 0, 7*sizeof(ch_data->s_indexmapped[1]));
+ for (e = 0; e < ch_data->bs_num_env; e++) {
+ const unsigned int ilim = sbr->n[ch_data->bs_freq_res[e + 1]];
+ uint16_t *table = ch_data->bs_freq_res[e + 1] ? sbr->f_tablehigh : sbr->f_tablelow;
+ int k;
+
+ if (sbr->kx[1] != table[0]) {
+ av_log(ac->avctx, AV_LOG_ERROR, "kx != f_table{high,low}[0]. "
+ "Derived frequency tables were not regenerated.\n");
+ sbr_turnoff(sbr);
+ return AVERROR_BUG;
+ }
+ for (i = 0; i < ilim; i++)
+ for (m = table[i]; m < table[i + 1]; m++)
+ sbr->e_origmapped[e][m - sbr->kx[1]] = ch_data->env_facs[e+1][i];
+
+ // ch_data->bs_num_noise > 1 => 2 noise floors
+ k = (ch_data->bs_num_noise > 1) && (ch_data->t_env[e] >= ch_data->t_q[1]);
+ for (i = 0; i < sbr->n_q; i++)
+ for (m = sbr->f_tablenoise[i]; m < sbr->f_tablenoise[i + 1]; m++)
+ sbr->q_mapped[e][m - sbr->kx[1]] = ch_data->noise_facs[k+1][i];
+
+ for (i = 0; i < sbr->n[1]; i++) {
+ if (ch_data->bs_add_harmonic_flag) {
+ const unsigned int m_midpoint =
+ (sbr->f_tablehigh[i] + sbr->f_tablehigh[i + 1]) >> 1;
+
+ ch_data->s_indexmapped[e + 1][m_midpoint - sbr->kx[1]] = ch_data->bs_add_harmonic[i] *
+ (e >= e_a[1] || (ch_data->s_indexmapped[0][m_midpoint - sbr->kx[1]] == 1));
+ }
+ }
+
+ for (i = 0; i < ilim; i++) {
+ int additional_sinusoid_present = 0;
+ for (m = table[i]; m < table[i + 1]; m++) {
+ if (ch_data->s_indexmapped[e + 1][m - sbr->kx[1]]) {
+ additional_sinusoid_present = 1;
+ break;
+ }
+ }
+ memset(&sbr->s_mapped[e][table[i] - sbr->kx[1]], additional_sinusoid_present,
+ (table[i + 1] - table[i]) * sizeof(sbr->s_mapped[e][0]));
+ }
+ }
+
+ memcpy(ch_data->s_indexmapped[0], ch_data->s_indexmapped[ch_data->bs_num_env], sizeof(ch_data->s_indexmapped[0]));
+ return 0;
+}
+
+/// Estimation of current envelope (14496-3 sp04 p218)
+static void sbr_env_estimate(AAC_FLOAT (*e_curr)[48], INTFLOAT X_high[64][40][2],
+ SpectralBandReplication *sbr, SBRData *ch_data)
+{
+ int e, m;
+ int kx1 = sbr->kx[1];
+
+ if (sbr->bs_interpol_freq) {
+ for (e = 0; e < ch_data->bs_num_env; e++) {
+#if USE_FIXED
+ const SoftFloat recip_env_size = av_int2sf(0x20000000 / (ch_data->t_env[e + 1] - ch_data->t_env[e]), 30);
+#else
+ const float recip_env_size = 0.5f / (ch_data->t_env[e + 1] - ch_data->t_env[e]);
+#endif /* USE_FIXED */
+ int ilb = ch_data->t_env[e] * 2 + ENVELOPE_ADJUSTMENT_OFFSET;
+ int iub = ch_data->t_env[e + 1] * 2 + ENVELOPE_ADJUSTMENT_OFFSET;
+
+ for (m = 0; m < sbr->m[1]; m++) {
+ AAC_FLOAT sum = sbr->dsp.sum_square(X_high[m+kx1] + ilb, iub - ilb);
+#if USE_FIXED
+ e_curr[e][m] = av_mul_sf(sum, recip_env_size);
+#else
+ e_curr[e][m] = sum * recip_env_size;
+#endif /* USE_FIXED */
+ }
+ }
+ } else {
+ int k, p;
+
+ for (e = 0; e < ch_data->bs_num_env; e++) {
+ const int env_size = 2 * (ch_data->t_env[e + 1] - ch_data->t_env[e]);
+ int ilb = ch_data->t_env[e] * 2 + ENVELOPE_ADJUSTMENT_OFFSET;
+ int iub = ch_data->t_env[e + 1] * 2 + ENVELOPE_ADJUSTMENT_OFFSET;
+ const uint16_t *table = ch_data->bs_freq_res[e + 1] ? sbr->f_tablehigh : sbr->f_tablelow;
+
+ for (p = 0; p < sbr->n[ch_data->bs_freq_res[e + 1]]; p++) {
+#if USE_FIXED
+ SoftFloat sum = FLOAT_0;
+ const SoftFloat den = av_int2sf(0x20000000 / (env_size * (table[p + 1] - table[p])), 29);
+ for (k = table[p]; k < table[p + 1]; k++) {
+ sum = av_add_sf(sum, sbr->dsp.sum_square(X_high[k] + ilb, iub - ilb));
+ }
+ sum = av_mul_sf(sum, den);
+#else
+ float sum = 0.0f;
+ const int den = env_size * (table[p + 1] - table[p]);
+
+ for (k = table[p]; k < table[p + 1]; k++) {
+ sum += sbr->dsp.sum_square(X_high[k] + ilb, iub - ilb);
+ }
+ sum /= den;
+#endif /* USE_FIXED */
+ for (k = table[p]; k < table[p + 1]; k++) {
+ e_curr[e][k - kx1] = sum;
+ }
+ }
+ }
+ }
+}
+
+void AAC_RENAME(ff_sbr_apply)(AACContext *ac, SpectralBandReplication *sbr, int id_aac,
+ INTFLOAT* L, INTFLOAT* R)
+{
+ int downsampled = ac->oc[1].m4ac.ext_sample_rate < sbr->sample_rate;
+ int ch;
+ int nch = (id_aac == TYPE_CPE) ? 2 : 1;
+ int err;
+
+ if (id_aac != sbr->id_aac) {
+ av_log(ac->avctx, id_aac == TYPE_LFE ? AV_LOG_VERBOSE : AV_LOG_WARNING,
+ "element type mismatch %d != %d\n", id_aac, sbr->id_aac);
+ sbr_turnoff(sbr);
+ }
+
+ if (sbr->start && !sbr->ready_for_dequant) {
+ av_log(ac->avctx, AV_LOG_ERROR,
+ "No quantized data read for sbr_dequant.\n");
+ sbr_turnoff(sbr);
+ }
+
+ if (!sbr->kx_and_m_pushed) {
+ sbr->kx[0] = sbr->kx[1];
+ sbr->m[0] = sbr->m[1];
+ } else {
+ sbr->kx_and_m_pushed = 0;
+ }
+
+ if (sbr->start) {
+ sbr_dequant(sbr, id_aac);
+ sbr->ready_for_dequant = 0;
+ }
+ for (ch = 0; ch < nch; ch++) {
+ /* decode channel */
+ sbr_qmf_analysis(ac->fdsp, &sbr->mdct_ana, &sbr->dsp, ch ? R : L, sbr->data[ch].analysis_filterbank_samples,
+ (INTFLOAT*)sbr->qmf_filter_scratch,
+ sbr->data[ch].W, sbr->data[ch].Ypos);
+ sbr->c.sbr_lf_gen(ac, sbr, sbr->X_low,
+ (const INTFLOAT (*)[32][32][2]) sbr->data[ch].W,
+ sbr->data[ch].Ypos);
+ sbr->data[ch].Ypos ^= 1;
+ if (sbr->start) {
+ sbr->c.sbr_hf_inverse_filter(&sbr->dsp, sbr->alpha0, sbr->alpha1,
+ (const INTFLOAT (*)[40][2]) sbr->X_low, sbr->k[0]);
+ sbr_chirp(sbr, &sbr->data[ch]);
+ av_assert0(sbr->data[ch].bs_num_env > 0);
+ sbr_hf_gen(ac, sbr, sbr->X_high,
+ (const INTFLOAT (*)[40][2]) sbr->X_low,
+ (const INTFLOAT (*)[2]) sbr->alpha0,
+ (const INTFLOAT (*)[2]) sbr->alpha1,
+ sbr->data[ch].bw_array, sbr->data[ch].t_env,
+ sbr->data[ch].bs_num_env);
+
+ // hf_adj
+ err = sbr_mapping(ac, sbr, &sbr->data[ch], sbr->data[ch].e_a);
+ if (!err) {
+ sbr_env_estimate(sbr->e_curr, sbr->X_high, sbr, &sbr->data[ch]);
+ sbr_gain_calc(ac, sbr, &sbr->data[ch], sbr->data[ch].e_a);
+ sbr->c.sbr_hf_assemble(sbr->data[ch].Y[sbr->data[ch].Ypos],
+ (const INTFLOAT (*)[40][2]) sbr->X_high,
+ sbr, &sbr->data[ch],
+ sbr->data[ch].e_a);
+ }
+ }
+
+ /* synthesis */
+ sbr->c.sbr_x_gen(sbr, sbr->X[ch],
+ (const INTFLOAT (*)[64][2]) sbr->data[ch].Y[1-sbr->data[ch].Ypos],
+ (const INTFLOAT (*)[64][2]) sbr->data[ch].Y[ sbr->data[ch].Ypos],
+ (const INTFLOAT (*)[40][2]) sbr->X_low, ch);
+ }
+
+ if (ac->oc[1].m4ac.ps == 1) {
+ if (sbr->ps.start) {
+ AAC_RENAME(ff_ps_apply)(ac->avctx, &sbr->ps, sbr->X[0], sbr->X[1], sbr->kx[1] + sbr->m[1]);
+ } else {
+ memcpy(sbr->X[1], sbr->X[0], sizeof(sbr->X[0]));
+ }
+ nch = 2;
+ }
+
+ sbr_qmf_synthesis(&sbr->mdct, &sbr->dsp, ac->fdsp,
+ L, sbr->X[0], sbr->qmf_filter_scratch,
+ sbr->data[0].synthesis_filterbank_samples,
+ &sbr->data[0].synthesis_filterbank_samples_offset,
+ downsampled);
+ if (nch == 2)
+ sbr_qmf_synthesis(&sbr->mdct, &sbr->dsp, ac->fdsp,
+ R, sbr->X[1], sbr->qmf_filter_scratch,
+ sbr->data[1].synthesis_filterbank_samples,
+ &sbr->data[1].synthesis_filterbank_samples_offset,
+ downsampled);
+}
+
+static void aacsbr_func_ptr_init(AACSBRContext *c)
+{
+ c->sbr_lf_gen = sbr_lf_gen;
+ c->sbr_hf_assemble = sbr_hf_assemble;
+ c->sbr_x_gen = sbr_x_gen;
+ c->sbr_hf_inverse_filter = sbr_hf_inverse_filter;
+
+#if !USE_FIXED
+ if(ARCH_MIPS)
+ ff_aacsbr_func_ptr_init_mips(c);
+#endif
+}
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