|
|
@@ -1,2495 +0,0 @@
|
|
|
-/*
|
|
|
- * AAC decoder
|
|
|
- * Copyright (c) 2005-2006 Oded Shimon ( ods15 ods15 dyndns org )
|
|
|
- * Copyright (c) 2006-2007 Maxim Gavrilov ( maxim.gavrilov gmail com )
|
|
|
- * Copyright (c) 2008-2013 Alex Converse <alex.converse@gmail.com>
|
|
|
- *
|
|
|
- * AAC LATM decoder
|
|
|
- * Copyright (c) 2008-2010 Paul Kendall <paul@kcbbs.gen.nz>
|
|
|
- * Copyright (c) 2010 Janne Grunau <janne-libav@jannau.net>
|
|
|
- *
|
|
|
- * 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 decoder
|
|
|
- * @author Oded Shimon ( ods15 ods15 dyndns org )
|
|
|
- * @author Maxim Gavrilov ( maxim.gavrilov gmail com )
|
|
|
- */
|
|
|
-
|
|
|
-#define USE_FIXED 1 // aacsbr.h breaks without this
|
|
|
-
|
|
|
-#include "libavutil/float_dsp.h"
|
|
|
-#include "avcodec.h"
|
|
|
-#include "codec_internal.h"
|
|
|
-#include "get_bits.h"
|
|
|
-#include "kbdwin.h"
|
|
|
-#include "sinewin.h"
|
|
|
-
|
|
|
-#include "aac.h"
|
|
|
-#include "aac/aacdec.h"
|
|
|
-#include "aactab.h"
|
|
|
-#include "aac/aacdec_tab.h"
|
|
|
-#include "adts_header.h"
|
|
|
-#include "cbrt_data.h"
|
|
|
-#include "aacsbr.h"
|
|
|
-#include "mpeg4audio.h"
|
|
|
-#include "profiles.h"
|
|
|
-#include "libavutil/intfloat.h"
|
|
|
-
|
|
|
-#include <errno.h>
|
|
|
-#include <math.h>
|
|
|
-#include <stdint.h>
|
|
|
-#include <string.h>
|
|
|
-
|
|
|
-#if ARCH_ARM
|
|
|
-# include "arm/aac.h"
|
|
|
-#elif ARCH_MIPS
|
|
|
-# include "mips/aacdec_mips.h"
|
|
|
-#endif
|
|
|
-
|
|
|
-/*
|
|
|
- * supported tools
|
|
|
- *
|
|
|
- * Support? Name
|
|
|
- * N (code in SoC repo) gain control
|
|
|
- * Y block switching
|
|
|
- * Y window shapes - standard
|
|
|
- * N window shapes - Low Delay
|
|
|
- * Y filterbank - standard
|
|
|
- * N (code in SoC repo) filterbank - Scalable Sample Rate
|
|
|
- * Y Temporal Noise Shaping
|
|
|
- * Y Long Term Prediction
|
|
|
- * Y intensity stereo
|
|
|
- * Y channel coupling
|
|
|
- * Y frequency domain prediction
|
|
|
- * Y Perceptual Noise Substitution
|
|
|
- * Y Mid/Side stereo
|
|
|
- * N Scalable Inverse AAC Quantization
|
|
|
- * N Frequency Selective Switch
|
|
|
- * N upsampling filter
|
|
|
- * Y quantization & coding - AAC
|
|
|
- * N quantization & coding - TwinVQ
|
|
|
- * N quantization & coding - BSAC
|
|
|
- * N AAC Error Resilience tools
|
|
|
- * N Error Resilience payload syntax
|
|
|
- * N Error Protection tool
|
|
|
- * N CELP
|
|
|
- * N Silence Compression
|
|
|
- * N HVXC
|
|
|
- * N HVXC 4kbits/s VR
|
|
|
- * N Structured Audio tools
|
|
|
- * N Structured Audio Sample Bank Format
|
|
|
- * N MIDI
|
|
|
- * N Harmonic and Individual Lines plus Noise
|
|
|
- * N Text-To-Speech Interface
|
|
|
- * Y Spectral Band Replication
|
|
|
- * Y (not in this code) Layer-1
|
|
|
- * Y (not in this code) Layer-2
|
|
|
- * Y (not in this code) Layer-3
|
|
|
- * N SinuSoidal Coding (Transient, Sinusoid, Noise)
|
|
|
- * Y Parametric Stereo
|
|
|
- * N Direct Stream Transfer
|
|
|
- * Y (not in fixed point code) Enhanced AAC Low Delay (ER AAC ELD)
|
|
|
- *
|
|
|
- * Note: - HE AAC v1 comprises LC AAC with Spectral Band Replication.
|
|
|
- * - HE AAC v2 comprises LC AAC with Spectral Band Replication and
|
|
|
- Parametric Stereo.
|
|
|
- */
|
|
|
-
|
|
|
-#include "libavutil/channel_layout.h"
|
|
|
-#include "libavutil/thread.h"
|
|
|
-#include "decode.h"
|
|
|
-#include "internal.h"
|
|
|
-#include "lpc_functions.h"
|
|
|
-
|
|
|
-static int output_configure(AACDecContext *ac,
|
|
|
- uint8_t layout_map[MAX_ELEM_ID*4][3], int tags,
|
|
|
- enum OCStatus oc_type, int get_new_frame);
|
|
|
-
|
|
|
-#define overread_err "Input buffer exhausted before END element found\n"
|
|
|
-
|
|
|
-static int count_channels(uint8_t (*layout)[3], int tags)
|
|
|
-{
|
|
|
- int i, sum = 0;
|
|
|
- for (i = 0; i < tags; i++) {
|
|
|
- int syn_ele = layout[i][0];
|
|
|
- int pos = layout[i][2];
|
|
|
- sum += (1 + (syn_ele == TYPE_CPE)) *
|
|
|
- (pos != AAC_CHANNEL_OFF && pos != AAC_CHANNEL_CC);
|
|
|
- }
|
|
|
- return sum;
|
|
|
-}
|
|
|
-
|
|
|
-/**
|
|
|
- * Check for the channel element in the current channel position configuration.
|
|
|
- * If it exists, make sure the appropriate element is allocated and map the
|
|
|
- * channel order to match the internal FFmpeg channel layout.
|
|
|
- *
|
|
|
- * @param che_pos current channel position configuration
|
|
|
- * @param type channel element type
|
|
|
- * @param id channel element id
|
|
|
- * @param channels count of the number of channels in the configuration
|
|
|
- *
|
|
|
- * @return Returns error status. 0 - OK, !0 - error
|
|
|
- */
|
|
|
-static av_cold int che_configure(AACDecContext *ac,
|
|
|
- enum ChannelPosition che_pos,
|
|
|
- int type, int id, int *channels)
|
|
|
-{
|
|
|
- if (*channels >= MAX_CHANNELS)
|
|
|
- return AVERROR_INVALIDDATA;
|
|
|
- if (che_pos) {
|
|
|
- if (!ac->che[type][id]) {
|
|
|
- int ret;
|
|
|
- if (ac->is_fixed)
|
|
|
- ret = ff_aac_sbr_ctx_alloc_init_fixed(ac, &ac->che[type][id], type);
|
|
|
- else
|
|
|
- ret = ff_aac_sbr_ctx_alloc_init(ac, &ac->che[type][id], type);
|
|
|
- if (ret < 0)
|
|
|
- return ret;
|
|
|
- }
|
|
|
- if (type != TYPE_CCE) {
|
|
|
- if (*channels >= MAX_CHANNELS - (type == TYPE_CPE || (type == TYPE_SCE && ac->oc[1].m4ac.ps == 1))) {
|
|
|
- av_log(ac->avctx, AV_LOG_ERROR, "Too many channels\n");
|
|
|
- return AVERROR_INVALIDDATA;
|
|
|
- }
|
|
|
- ac->output_element[(*channels)++] = &ac->che[type][id]->ch[0];
|
|
|
- if (type == TYPE_CPE ||
|
|
|
- (type == TYPE_SCE && ac->oc[1].m4ac.ps == 1)) {
|
|
|
- ac->output_element[(*channels)++] = &ac->che[type][id]->ch[1];
|
|
|
- }
|
|
|
- }
|
|
|
- } else {
|
|
|
- if (ac->che[type][id]) {
|
|
|
- if (ac->is_fixed)
|
|
|
- ff_aac_sbr_ctx_close_fixed(ac->che[type][id]);
|
|
|
- else
|
|
|
- ff_aac_sbr_ctx_close(ac->che[type][id]);
|
|
|
- }
|
|
|
- av_freep(&ac->che[type][id]);
|
|
|
- }
|
|
|
- return 0;
|
|
|
-}
|
|
|
-
|
|
|
-static int frame_configure_elements(AVCodecContext *avctx)
|
|
|
-{
|
|
|
- AACDecContext *ac = avctx->priv_data;
|
|
|
- int type, id, ch, ret;
|
|
|
-
|
|
|
- /* set channel pointers to internal buffers by default */
|
|
|
- for (type = 0; type < 4; type++) {
|
|
|
- for (id = 0; id < MAX_ELEM_ID; id++) {
|
|
|
- ChannelElement *che = ac->che[type][id];
|
|
|
- if (che) {
|
|
|
- che->ch[0].AAC_RENAME(output) = che->ch[0].AAC_RENAME(ret_buf);
|
|
|
- che->ch[1].AAC_RENAME(output) = che->ch[1].AAC_RENAME(ret_buf);
|
|
|
- }
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- /* get output buffer */
|
|
|
- av_frame_unref(ac->frame);
|
|
|
- if (!avctx->ch_layout.nb_channels)
|
|
|
- return 1;
|
|
|
-
|
|
|
- ac->frame->nb_samples = 2048;
|
|
|
- if ((ret = ff_get_buffer(avctx, ac->frame, 0)) < 0)
|
|
|
- return ret;
|
|
|
-
|
|
|
- /* map output channel pointers to AVFrame data */
|
|
|
- for (ch = 0; ch < avctx->ch_layout.nb_channels; ch++) {
|
|
|
- if (ac->output_element[ch])
|
|
|
- ac->output_element[ch]->AAC_RENAME(output) = (INTFLOAT *)ac->frame->extended_data[ch];
|
|
|
- }
|
|
|
-
|
|
|
- return 0;
|
|
|
-}
|
|
|
-
|
|
|
-struct elem_to_channel {
|
|
|
- uint64_t av_position;
|
|
|
- uint8_t syn_ele;
|
|
|
- uint8_t elem_id;
|
|
|
- uint8_t aac_position;
|
|
|
-};
|
|
|
-
|
|
|
-static int assign_pair(struct elem_to_channel e2c_vec[MAX_ELEM_ID],
|
|
|
- uint8_t (*layout_map)[3], int offset, uint64_t left,
|
|
|
- uint64_t right, int pos, uint64_t *layout)
|
|
|
-{
|
|
|
- if (layout_map[offset][0] == TYPE_CPE) {
|
|
|
- e2c_vec[offset] = (struct elem_to_channel) {
|
|
|
- .av_position = left | right,
|
|
|
- .syn_ele = TYPE_CPE,
|
|
|
- .elem_id = layout_map[offset][1],
|
|
|
- .aac_position = pos
|
|
|
- };
|
|
|
- if (e2c_vec[offset].av_position != UINT64_MAX)
|
|
|
- *layout |= e2c_vec[offset].av_position;
|
|
|
-
|
|
|
- return 1;
|
|
|
- } else {
|
|
|
- e2c_vec[offset] = (struct elem_to_channel) {
|
|
|
- .av_position = left,
|
|
|
- .syn_ele = TYPE_SCE,
|
|
|
- .elem_id = layout_map[offset][1],
|
|
|
- .aac_position = pos
|
|
|
- };
|
|
|
- e2c_vec[offset + 1] = (struct elem_to_channel) {
|
|
|
- .av_position = right,
|
|
|
- .syn_ele = TYPE_SCE,
|
|
|
- .elem_id = layout_map[offset + 1][1],
|
|
|
- .aac_position = pos
|
|
|
- };
|
|
|
- if (left != UINT64_MAX)
|
|
|
- *layout |= left;
|
|
|
-
|
|
|
- if (right != UINT64_MAX)
|
|
|
- *layout |= right;
|
|
|
-
|
|
|
- return 2;
|
|
|
- }
|
|
|
-}
|
|
|
-
|
|
|
-static int count_paired_channels(uint8_t (*layout_map)[3], int tags, int pos,
|
|
|
- int current)
|
|
|
-{
|
|
|
- int num_pos_channels = 0;
|
|
|
- int first_cpe = 0;
|
|
|
- int sce_parity = 0;
|
|
|
- int i;
|
|
|
- for (i = current; i < tags; i++) {
|
|
|
- if (layout_map[i][2] != pos)
|
|
|
- break;
|
|
|
- if (layout_map[i][0] == TYPE_CPE) {
|
|
|
- if (sce_parity) {
|
|
|
- if (pos == AAC_CHANNEL_FRONT && !first_cpe) {
|
|
|
- sce_parity = 0;
|
|
|
- } else {
|
|
|
- return -1;
|
|
|
- }
|
|
|
- }
|
|
|
- num_pos_channels += 2;
|
|
|
- first_cpe = 1;
|
|
|
- } else {
|
|
|
- num_pos_channels++;
|
|
|
- sce_parity ^= (pos != AAC_CHANNEL_LFE);
|
|
|
- }
|
|
|
- }
|
|
|
- if (sce_parity &&
|
|
|
- (pos == AAC_CHANNEL_FRONT && first_cpe))
|
|
|
- return -1;
|
|
|
-
|
|
|
- return num_pos_channels;
|
|
|
-}
|
|
|
-
|
|
|
-static int assign_channels(struct elem_to_channel e2c_vec[MAX_ELEM_ID], uint8_t (*layout_map)[3],
|
|
|
- uint64_t *layout, int tags, int layer, int pos, int *current)
|
|
|
-{
|
|
|
- int i = *current, j = 0;
|
|
|
- int nb_channels = count_paired_channels(layout_map, tags, pos, i);
|
|
|
-
|
|
|
- if (nb_channels < 0 || nb_channels > 5)
|
|
|
- return 0;
|
|
|
-
|
|
|
- if (pos == AAC_CHANNEL_LFE) {
|
|
|
- while (nb_channels) {
|
|
|
- if (ff_aac_channel_map[layer][pos - 1][j] == AV_CHAN_NONE)
|
|
|
- return -1;
|
|
|
- e2c_vec[i] = (struct elem_to_channel) {
|
|
|
- .av_position = 1ULL << ff_aac_channel_map[layer][pos - 1][j],
|
|
|
- .syn_ele = layout_map[i][0],
|
|
|
- .elem_id = layout_map[i][1],
|
|
|
- .aac_position = pos
|
|
|
- };
|
|
|
- *layout |= e2c_vec[i].av_position;
|
|
|
- i++;
|
|
|
- j++;
|
|
|
- nb_channels--;
|
|
|
- }
|
|
|
- *current = i;
|
|
|
-
|
|
|
- return 0;
|
|
|
- }
|
|
|
-
|
|
|
- while (nb_channels & 1) {
|
|
|
- if (ff_aac_channel_map[layer][pos - 1][0] == AV_CHAN_NONE)
|
|
|
- return -1;
|
|
|
- if (ff_aac_channel_map[layer][pos - 1][0] == AV_CHAN_UNUSED)
|
|
|
- break;
|
|
|
- e2c_vec[i] = (struct elem_to_channel) {
|
|
|
- .av_position = 1ULL << ff_aac_channel_map[layer][pos - 1][0],
|
|
|
- .syn_ele = layout_map[i][0],
|
|
|
- .elem_id = layout_map[i][1],
|
|
|
- .aac_position = pos
|
|
|
- };
|
|
|
- *layout |= e2c_vec[i].av_position;
|
|
|
- i++;
|
|
|
- nb_channels--;
|
|
|
- }
|
|
|
-
|
|
|
- j = (pos != AAC_CHANNEL_SIDE) && nb_channels <= 3 ? 3 : 1;
|
|
|
- while (nb_channels >= 2) {
|
|
|
- if (ff_aac_channel_map[layer][pos - 1][j] == AV_CHAN_NONE ||
|
|
|
- ff_aac_channel_map[layer][pos - 1][j+1] == AV_CHAN_NONE)
|
|
|
- return -1;
|
|
|
- i += assign_pair(e2c_vec, layout_map, i,
|
|
|
- 1ULL << ff_aac_channel_map[layer][pos - 1][j],
|
|
|
- 1ULL << ff_aac_channel_map[layer][pos - 1][j+1],
|
|
|
- pos, layout);
|
|
|
- j += 2;
|
|
|
- nb_channels -= 2;
|
|
|
- }
|
|
|
- while (nb_channels & 1) {
|
|
|
- if (ff_aac_channel_map[layer][pos - 1][5] == AV_CHAN_NONE)
|
|
|
- return -1;
|
|
|
- e2c_vec[i] = (struct elem_to_channel) {
|
|
|
- .av_position = 1ULL << ff_aac_channel_map[layer][pos - 1][5],
|
|
|
- .syn_ele = layout_map[i][0],
|
|
|
- .elem_id = layout_map[i][1],
|
|
|
- .aac_position = pos
|
|
|
- };
|
|
|
- *layout |= e2c_vec[i].av_position;
|
|
|
- i++;
|
|
|
- nb_channels--;
|
|
|
- }
|
|
|
- if (nb_channels)
|
|
|
- return -1;
|
|
|
-
|
|
|
- *current = i;
|
|
|
-
|
|
|
- return 0;
|
|
|
-}
|
|
|
-
|
|
|
-static uint64_t sniff_channel_order(uint8_t (*layout_map)[3], int tags)
|
|
|
-{
|
|
|
- int i, n, total_non_cc_elements;
|
|
|
- struct elem_to_channel e2c_vec[4 * MAX_ELEM_ID] = { { 0 } };
|
|
|
- uint64_t layout = 0;
|
|
|
-
|
|
|
- if (FF_ARRAY_ELEMS(e2c_vec) < tags)
|
|
|
- return 0;
|
|
|
-
|
|
|
- for (n = 0, i = 0; n < 3 && i < tags; n++) {
|
|
|
- int ret = assign_channels(e2c_vec, layout_map, &layout, tags, n, AAC_CHANNEL_FRONT, &i);
|
|
|
- if (ret < 0)
|
|
|
- return 0;
|
|
|
- ret = assign_channels(e2c_vec, layout_map, &layout, tags, n, AAC_CHANNEL_SIDE, &i);
|
|
|
- if (ret < 0)
|
|
|
- return 0;
|
|
|
- ret = assign_channels(e2c_vec, layout_map, &layout, tags, n, AAC_CHANNEL_BACK, &i);
|
|
|
- if (ret < 0)
|
|
|
- return 0;
|
|
|
- ret = assign_channels(e2c_vec, layout_map, &layout, tags, n, AAC_CHANNEL_LFE, &i);
|
|
|
- if (ret < 0)
|
|
|
- return 0;
|
|
|
- }
|
|
|
-
|
|
|
- total_non_cc_elements = n = i;
|
|
|
-
|
|
|
- if (layout == AV_CH_LAYOUT_22POINT2) {
|
|
|
- // For 22.2 reorder the result as needed
|
|
|
- FFSWAP(struct elem_to_channel, e2c_vec[2], e2c_vec[0]); // FL & FR first (final), FC third
|
|
|
- FFSWAP(struct elem_to_channel, e2c_vec[2], e2c_vec[1]); // FC second (final), FLc & FRc third
|
|
|
- FFSWAP(struct elem_to_channel, e2c_vec[6], e2c_vec[2]); // LFE1 third (final), FLc & FRc seventh
|
|
|
- FFSWAP(struct elem_to_channel, e2c_vec[4], e2c_vec[3]); // BL & BR fourth (final), SiL & SiR fifth
|
|
|
- FFSWAP(struct elem_to_channel, e2c_vec[6], e2c_vec[4]); // FLc & FRc fifth (final), SiL & SiR seventh
|
|
|
- FFSWAP(struct elem_to_channel, e2c_vec[7], e2c_vec[6]); // LFE2 seventh (final), SiL & SiR eight (final)
|
|
|
- FFSWAP(struct elem_to_channel, e2c_vec[9], e2c_vec[8]); // TpFL & TpFR ninth (final), TFC tenth (final)
|
|
|
- FFSWAP(struct elem_to_channel, e2c_vec[11], e2c_vec[10]); // TC eleventh (final), TpSiL & TpSiR twelth
|
|
|
- FFSWAP(struct elem_to_channel, e2c_vec[12], e2c_vec[11]); // TpBL & TpBR twelth (final), TpSiL & TpSiR thirteenth (final)
|
|
|
- } else {
|
|
|
- // For everything else, utilize the AV channel position define as a
|
|
|
- // stable sort.
|
|
|
- do {
|
|
|
- int next_n = 0;
|
|
|
- for (i = 1; i < n; i++)
|
|
|
- if (e2c_vec[i - 1].av_position > e2c_vec[i].av_position) {
|
|
|
- FFSWAP(struct elem_to_channel, e2c_vec[i - 1], e2c_vec[i]);
|
|
|
- next_n = i;
|
|
|
- }
|
|
|
- n = next_n;
|
|
|
- } while (n > 0);
|
|
|
-
|
|
|
- }
|
|
|
-
|
|
|
- for (i = 0; i < total_non_cc_elements; i++) {
|
|
|
- layout_map[i][0] = e2c_vec[i].syn_ele;
|
|
|
- layout_map[i][1] = e2c_vec[i].elem_id;
|
|
|
- layout_map[i][2] = e2c_vec[i].aac_position;
|
|
|
- }
|
|
|
-
|
|
|
- return layout;
|
|
|
-}
|
|
|
-
|
|
|
-/**
|
|
|
- * Save current output configuration if and only if it has been locked.
|
|
|
- */
|
|
|
-static int push_output_configuration(AACDecContext *ac)
|
|
|
-{
|
|
|
- int pushed = 0;
|
|
|
-
|
|
|
- if (ac->oc[1].status == OC_LOCKED || ac->oc[0].status == OC_NONE) {
|
|
|
- ac->oc[0] = ac->oc[1];
|
|
|
- pushed = 1;
|
|
|
- }
|
|
|
- ac->oc[1].status = OC_NONE;
|
|
|
- return pushed;
|
|
|
-}
|
|
|
-
|
|
|
-/**
|
|
|
- * Restore the previous output configuration if and only if the current
|
|
|
- * configuration is unlocked.
|
|
|
- */
|
|
|
-static void pop_output_configuration(AACDecContext *ac)
|
|
|
-{
|
|
|
- if (ac->oc[1].status != OC_LOCKED && ac->oc[0].status != OC_NONE) {
|
|
|
- ac->oc[1] = ac->oc[0];
|
|
|
- ac->avctx->ch_layout = ac->oc[1].ch_layout;
|
|
|
- output_configure(ac, ac->oc[1].layout_map, ac->oc[1].layout_map_tags,
|
|
|
- ac->oc[1].status, 0);
|
|
|
- }
|
|
|
-}
|
|
|
-
|
|
|
-/**
|
|
|
- * Configure output channel order based on the current program
|
|
|
- * configuration element.
|
|
|
- *
|
|
|
- * @return Returns error status. 0 - OK, !0 - error
|
|
|
- */
|
|
|
-static int output_configure(AACDecContext *ac,
|
|
|
- uint8_t layout_map[MAX_ELEM_ID * 4][3], int tags,
|
|
|
- enum OCStatus oc_type, int get_new_frame)
|
|
|
-{
|
|
|
- AVCodecContext *avctx = ac->avctx;
|
|
|
- int i, channels = 0, ret;
|
|
|
- uint64_t layout = 0;
|
|
|
- uint8_t id_map[TYPE_END][MAX_ELEM_ID] = {{ 0 }};
|
|
|
- uint8_t type_counts[TYPE_END] = { 0 };
|
|
|
-
|
|
|
- if (ac->oc[1].layout_map != layout_map) {
|
|
|
- memcpy(ac->oc[1].layout_map, layout_map, tags * sizeof(layout_map[0]));
|
|
|
- ac->oc[1].layout_map_tags = tags;
|
|
|
- }
|
|
|
- for (i = 0; i < tags; i++) {
|
|
|
- int type = layout_map[i][0];
|
|
|
- int id = layout_map[i][1];
|
|
|
- id_map[type][id] = type_counts[type]++;
|
|
|
- if (id_map[type][id] >= MAX_ELEM_ID) {
|
|
|
- avpriv_request_sample(ac->avctx, "Too large remapped id");
|
|
|
- return AVERROR_PATCHWELCOME;
|
|
|
- }
|
|
|
- }
|
|
|
- // Try to sniff a reasonable channel order, otherwise output the
|
|
|
- // channels in the order the PCE declared them.
|
|
|
- if (ac->output_channel_order == CHANNEL_ORDER_DEFAULT)
|
|
|
- layout = sniff_channel_order(layout_map, tags);
|
|
|
- for (i = 0; i < tags; i++) {
|
|
|
- int type = layout_map[i][0];
|
|
|
- int id = layout_map[i][1];
|
|
|
- int iid = id_map[type][id];
|
|
|
- int position = layout_map[i][2];
|
|
|
- // Allocate or free elements depending on if they are in the
|
|
|
- // current program configuration.
|
|
|
- ret = che_configure(ac, position, type, iid, &channels);
|
|
|
- if (ret < 0)
|
|
|
- return ret;
|
|
|
- ac->tag_che_map[type][id] = ac->che[type][iid];
|
|
|
- }
|
|
|
- if (ac->oc[1].m4ac.ps == 1 && channels == 2) {
|
|
|
- if (layout == AV_CH_FRONT_CENTER) {
|
|
|
- layout = AV_CH_FRONT_LEFT|AV_CH_FRONT_RIGHT;
|
|
|
- } else {
|
|
|
- layout = 0;
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- av_channel_layout_uninit(&ac->oc[1].ch_layout);
|
|
|
- if (layout)
|
|
|
- av_channel_layout_from_mask(&ac->oc[1].ch_layout, layout);
|
|
|
- else {
|
|
|
- ac->oc[1].ch_layout.order = AV_CHANNEL_ORDER_UNSPEC;
|
|
|
- ac->oc[1].ch_layout.nb_channels = channels;
|
|
|
- }
|
|
|
-
|
|
|
- av_channel_layout_copy(&avctx->ch_layout, &ac->oc[1].ch_layout);
|
|
|
- ac->oc[1].status = oc_type;
|
|
|
-
|
|
|
- if (get_new_frame) {
|
|
|
- if ((ret = frame_configure_elements(ac->avctx)) < 0)
|
|
|
- return ret;
|
|
|
- }
|
|
|
-
|
|
|
- return 0;
|
|
|
-}
|
|
|
-
|
|
|
-static void flush(AVCodecContext *avctx)
|
|
|
-{
|
|
|
- AACDecContext *ac= avctx->priv_data;
|
|
|
- int type, i, j;
|
|
|
-
|
|
|
- for (type = 3; type >= 0; type--) {
|
|
|
- for (i = 0; i < MAX_ELEM_ID; i++) {
|
|
|
- ChannelElement *che = ac->che[type][i];
|
|
|
- if (che) {
|
|
|
- for (j = 0; j <= 1; j++) {
|
|
|
- memset(che->ch[j].saved, 0, sizeof(che->ch[j].saved));
|
|
|
- }
|
|
|
- }
|
|
|
- }
|
|
|
- }
|
|
|
-}
|
|
|
-
|
|
|
-/**
|
|
|
- * Set up channel positions based on a default channel configuration
|
|
|
- * as specified in table 1.17.
|
|
|
- *
|
|
|
- * @return Returns error status. 0 - OK, !0 - error
|
|
|
- */
|
|
|
-static int set_default_channel_config(AACDecContext *ac, AVCodecContext *avctx,
|
|
|
- uint8_t (*layout_map)[3],
|
|
|
- int *tags,
|
|
|
- int channel_config)
|
|
|
-{
|
|
|
- if (channel_config < 1 || (channel_config > 7 && channel_config < 11) ||
|
|
|
- channel_config > 14) {
|
|
|
- av_log(avctx, AV_LOG_ERROR,
|
|
|
- "invalid default channel configuration (%d)\n",
|
|
|
- channel_config);
|
|
|
- return AVERROR_INVALIDDATA;
|
|
|
- }
|
|
|
- *tags = ff_tags_per_config[channel_config];
|
|
|
- memcpy(layout_map, ff_aac_channel_layout_map[channel_config - 1],
|
|
|
- *tags * sizeof(*layout_map));
|
|
|
-
|
|
|
- /*
|
|
|
- * AAC specification has 7.1(wide) as a default layout for 8-channel streams.
|
|
|
- * However, at least Nero AAC encoder encodes 7.1 streams using the default
|
|
|
- * channel config 7, mapping the side channels of the original audio stream
|
|
|
- * to the second AAC_CHANNEL_FRONT pair in the AAC stream. Similarly, e.g. FAAD
|
|
|
- * decodes the second AAC_CHANNEL_FRONT pair as side channels, therefore decoding
|
|
|
- * the incorrect streams as if they were correct (and as the encoder intended).
|
|
|
- *
|
|
|
- * As actual intended 7.1(wide) streams are very rare, default to assuming a
|
|
|
- * 7.1 layout was intended.
|
|
|
- */
|
|
|
- if (channel_config == 7 && avctx->strict_std_compliance < FF_COMPLIANCE_STRICT) {
|
|
|
- layout_map[2][2] = AAC_CHANNEL_BACK;
|
|
|
-
|
|
|
- if (!ac || !ac->warned_71_wide++) {
|
|
|
- av_log(avctx, AV_LOG_INFO, "Assuming an incorrectly encoded 7.1 channel layout"
|
|
|
- " instead of a spec-compliant 7.1(wide) layout, use -strict %d to decode"
|
|
|
- " according to the specification instead.\n", FF_COMPLIANCE_STRICT);
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- return 0;
|
|
|
-}
|
|
|
-
|
|
|
-static ChannelElement *get_che(AACDecContext *ac, int type, int elem_id)
|
|
|
-{
|
|
|
- /* For PCE based channel configurations map the channels solely based
|
|
|
- * on tags. */
|
|
|
- if (!ac->oc[1].m4ac.chan_config) {
|
|
|
- return ac->tag_che_map[type][elem_id];
|
|
|
- }
|
|
|
- // Allow single CPE stereo files to be signalled with mono configuration.
|
|
|
- if (!ac->tags_mapped && type == TYPE_CPE &&
|
|
|
- ac->oc[1].m4ac.chan_config == 1) {
|
|
|
- uint8_t layout_map[MAX_ELEM_ID*4][3];
|
|
|
- int layout_map_tags;
|
|
|
- push_output_configuration(ac);
|
|
|
-
|
|
|
- av_log(ac->avctx, AV_LOG_DEBUG, "mono with CPE\n");
|
|
|
-
|
|
|
- if (set_default_channel_config(ac, ac->avctx, layout_map,
|
|
|
- &layout_map_tags, 2) < 0)
|
|
|
- return NULL;
|
|
|
- if (output_configure(ac, layout_map, layout_map_tags,
|
|
|
- OC_TRIAL_FRAME, 1) < 0)
|
|
|
- return NULL;
|
|
|
-
|
|
|
- ac->oc[1].m4ac.chan_config = 2;
|
|
|
- ac->oc[1].m4ac.ps = 0;
|
|
|
- }
|
|
|
- // And vice-versa
|
|
|
- if (!ac->tags_mapped && type == TYPE_SCE &&
|
|
|
- ac->oc[1].m4ac.chan_config == 2) {
|
|
|
- uint8_t layout_map[MAX_ELEM_ID * 4][3];
|
|
|
- int layout_map_tags;
|
|
|
- push_output_configuration(ac);
|
|
|
-
|
|
|
- av_log(ac->avctx, AV_LOG_DEBUG, "stereo with SCE\n");
|
|
|
-
|
|
|
- layout_map_tags = 2;
|
|
|
- layout_map[0][0] = layout_map[1][0] = TYPE_SCE;
|
|
|
- layout_map[0][2] = layout_map[1][2] = AAC_CHANNEL_FRONT;
|
|
|
- layout_map[0][1] = 0;
|
|
|
- layout_map[1][1] = 1;
|
|
|
- if (output_configure(ac, layout_map, layout_map_tags,
|
|
|
- OC_TRIAL_FRAME, 1) < 0)
|
|
|
- return NULL;
|
|
|
-
|
|
|
- if (ac->oc[1].m4ac.sbr)
|
|
|
- ac->oc[1].m4ac.ps = -1;
|
|
|
- }
|
|
|
- /* For indexed channel configurations map the channels solely based
|
|
|
- * on position. */
|
|
|
- switch (ac->oc[1].m4ac.chan_config) {
|
|
|
- case 14:
|
|
|
- if (ac->tags_mapped > 2 && ((type == TYPE_CPE && elem_id < 3) ||
|
|
|
- (type == TYPE_LFE && elem_id < 1))) {
|
|
|
- ac->tags_mapped++;
|
|
|
- return ac->tag_che_map[type][elem_id] = ac->che[type][elem_id];
|
|
|
- }
|
|
|
- case 13:
|
|
|
- if (ac->tags_mapped > 3 && ((type == TYPE_CPE && elem_id < 8) ||
|
|
|
- (type == TYPE_SCE && elem_id < 6) ||
|
|
|
- (type == TYPE_LFE && elem_id < 2))) {
|
|
|
- ac->tags_mapped++;
|
|
|
- return ac->tag_che_map[type][elem_id] = ac->che[type][elem_id];
|
|
|
- }
|
|
|
- case 12:
|
|
|
- case 7:
|
|
|
- if (ac->tags_mapped == 3 && type == TYPE_CPE) {
|
|
|
- ac->tags_mapped++;
|
|
|
- return ac->tag_che_map[TYPE_CPE][elem_id] = ac->che[TYPE_CPE][2];
|
|
|
- }
|
|
|
- case 11:
|
|
|
- if (ac->tags_mapped == 3 && type == TYPE_SCE) {
|
|
|
- ac->tags_mapped++;
|
|
|
- return ac->tag_che_map[TYPE_SCE][elem_id] = ac->che[TYPE_SCE][1];
|
|
|
- }
|
|
|
- case 6:
|
|
|
- /* Some streams incorrectly code 5.1 audio as
|
|
|
- * SCE[0] CPE[0] CPE[1] SCE[1]
|
|
|
- * instead of
|
|
|
- * SCE[0] CPE[0] CPE[1] LFE[0].
|
|
|
- * If we seem to have encountered such a stream, transfer
|
|
|
- * the LFE[0] element to the SCE[1]'s mapping */
|
|
|
- if (ac->tags_mapped == ff_tags_per_config[ac->oc[1].m4ac.chan_config] - 1 && (type == TYPE_LFE || type == TYPE_SCE)) {
|
|
|
- if (!ac->warned_remapping_once && (type != TYPE_LFE || elem_id != 0)) {
|
|
|
- av_log(ac->avctx, AV_LOG_WARNING,
|
|
|
- "This stream seems to incorrectly report its last channel as %s[%d], mapping to LFE[0]\n",
|
|
|
- type == TYPE_SCE ? "SCE" : "LFE", elem_id);
|
|
|
- ac->warned_remapping_once++;
|
|
|
- }
|
|
|
- ac->tags_mapped++;
|
|
|
- return ac->tag_che_map[type][elem_id] = ac->che[TYPE_LFE][0];
|
|
|
- }
|
|
|
- case 5:
|
|
|
- if (ac->tags_mapped == 2 && type == TYPE_CPE) {
|
|
|
- ac->tags_mapped++;
|
|
|
- return ac->tag_che_map[TYPE_CPE][elem_id] = ac->che[TYPE_CPE][1];
|
|
|
- }
|
|
|
- case 4:
|
|
|
- /* Some streams incorrectly code 4.0 audio as
|
|
|
- * SCE[0] CPE[0] LFE[0]
|
|
|
- * instead of
|
|
|
- * SCE[0] CPE[0] SCE[1].
|
|
|
- * If we seem to have encountered such a stream, transfer
|
|
|
- * the SCE[1] element to the LFE[0]'s mapping */
|
|
|
- if (ac->tags_mapped == ff_tags_per_config[ac->oc[1].m4ac.chan_config] - 1 && (type == TYPE_LFE || type == TYPE_SCE)) {
|
|
|
- if (!ac->warned_remapping_once && (type != TYPE_SCE || elem_id != 1)) {
|
|
|
- av_log(ac->avctx, AV_LOG_WARNING,
|
|
|
- "This stream seems to incorrectly report its last channel as %s[%d], mapping to SCE[1]\n",
|
|
|
- type == TYPE_SCE ? "SCE" : "LFE", elem_id);
|
|
|
- ac->warned_remapping_once++;
|
|
|
- }
|
|
|
- ac->tags_mapped++;
|
|
|
- return ac->tag_che_map[type][elem_id] = ac->che[TYPE_SCE][1];
|
|
|
- }
|
|
|
- if (ac->tags_mapped == 2 &&
|
|
|
- ac->oc[1].m4ac.chan_config == 4 &&
|
|
|
- type == TYPE_SCE) {
|
|
|
- ac->tags_mapped++;
|
|
|
- return ac->tag_che_map[TYPE_SCE][elem_id] = ac->che[TYPE_SCE][1];
|
|
|
- }
|
|
|
- case 3:
|
|
|
- case 2:
|
|
|
- if (ac->tags_mapped == (ac->oc[1].m4ac.chan_config != 2) &&
|
|
|
- type == TYPE_CPE) {
|
|
|
- ac->tags_mapped++;
|
|
|
- return ac->tag_che_map[TYPE_CPE][elem_id] = ac->che[TYPE_CPE][0];
|
|
|
- } else if (ac->tags_mapped == 1 && ac->oc[1].m4ac.chan_config == 2 &&
|
|
|
- type == TYPE_SCE) {
|
|
|
- ac->tags_mapped++;
|
|
|
- return ac->tag_che_map[TYPE_SCE][elem_id] = ac->che[TYPE_SCE][1];
|
|
|
- }
|
|
|
- case 1:
|
|
|
- if (!ac->tags_mapped && type == TYPE_SCE) {
|
|
|
- ac->tags_mapped++;
|
|
|
- return ac->tag_che_map[TYPE_SCE][elem_id] = ac->che[TYPE_SCE][0];
|
|
|
- }
|
|
|
- default:
|
|
|
- return NULL;
|
|
|
- }
|
|
|
-}
|
|
|
-
|
|
|
-/**
|
|
|
- * Decode an array of 4 bit element IDs, optionally interleaved with a
|
|
|
- * stereo/mono switching bit.
|
|
|
- *
|
|
|
- * @param type speaker type/position for these channels
|
|
|
- */
|
|
|
-static void decode_channel_map(uint8_t layout_map[][3],
|
|
|
- enum ChannelPosition type,
|
|
|
- GetBitContext *gb, int n)
|
|
|
-{
|
|
|
- while (n--) {
|
|
|
- enum RawDataBlockType syn_ele;
|
|
|
- switch (type) {
|
|
|
- case AAC_CHANNEL_FRONT:
|
|
|
- case AAC_CHANNEL_BACK:
|
|
|
- case AAC_CHANNEL_SIDE:
|
|
|
- syn_ele = get_bits1(gb);
|
|
|
- break;
|
|
|
- case AAC_CHANNEL_CC:
|
|
|
- skip_bits1(gb);
|
|
|
- syn_ele = TYPE_CCE;
|
|
|
- break;
|
|
|
- case AAC_CHANNEL_LFE:
|
|
|
- syn_ele = TYPE_LFE;
|
|
|
- break;
|
|
|
- default:
|
|
|
- // AAC_CHANNEL_OFF has no channel map
|
|
|
- av_assert0(0);
|
|
|
- }
|
|
|
- layout_map[0][0] = syn_ele;
|
|
|
- layout_map[0][1] = get_bits(gb, 4);
|
|
|
- layout_map[0][2] = type;
|
|
|
- layout_map++;
|
|
|
- }
|
|
|
-}
|
|
|
-
|
|
|
-static inline void relative_align_get_bits(GetBitContext *gb,
|
|
|
- int reference_position) {
|
|
|
- int n = (reference_position - get_bits_count(gb) & 7);
|
|
|
- if (n)
|
|
|
- skip_bits(gb, n);
|
|
|
-}
|
|
|
-
|
|
|
-/**
|
|
|
- * Decode program configuration element; reference: table 4.2.
|
|
|
- *
|
|
|
- * @return Returns error status. 0 - OK, !0 - error
|
|
|
- */
|
|
|
-static int decode_pce(AVCodecContext *avctx, MPEG4AudioConfig *m4ac,
|
|
|
- uint8_t (*layout_map)[3],
|
|
|
- GetBitContext *gb, int byte_align_ref)
|
|
|
-{
|
|
|
- int num_front, num_side, num_back, num_lfe, num_assoc_data, num_cc;
|
|
|
- int sampling_index;
|
|
|
- int comment_len;
|
|
|
- int tags;
|
|
|
-
|
|
|
- skip_bits(gb, 2); // object_type
|
|
|
-
|
|
|
- sampling_index = get_bits(gb, 4);
|
|
|
- if (m4ac->sampling_index != sampling_index)
|
|
|
- av_log(avctx, AV_LOG_WARNING,
|
|
|
- "Sample rate index in program config element does not "
|
|
|
- "match the sample rate index configured by the container.\n");
|
|
|
-
|
|
|
- num_front = get_bits(gb, 4);
|
|
|
- num_side = get_bits(gb, 4);
|
|
|
- num_back = get_bits(gb, 4);
|
|
|
- num_lfe = get_bits(gb, 2);
|
|
|
- num_assoc_data = get_bits(gb, 3);
|
|
|
- num_cc = get_bits(gb, 4);
|
|
|
-
|
|
|
- if (get_bits1(gb))
|
|
|
- skip_bits(gb, 4); // mono_mixdown_tag
|
|
|
- if (get_bits1(gb))
|
|
|
- skip_bits(gb, 4); // stereo_mixdown_tag
|
|
|
-
|
|
|
- if (get_bits1(gb))
|
|
|
- skip_bits(gb, 3); // mixdown_coeff_index and pseudo_surround
|
|
|
-
|
|
|
- if (get_bits_left(gb) < 5 * (num_front + num_side + num_back + num_cc) + 4 *(num_lfe + num_assoc_data + num_cc)) {
|
|
|
- av_log(avctx, AV_LOG_ERROR, "decode_pce: " overread_err);
|
|
|
- return -1;
|
|
|
- }
|
|
|
- decode_channel_map(layout_map , AAC_CHANNEL_FRONT, gb, num_front);
|
|
|
- tags = num_front;
|
|
|
- decode_channel_map(layout_map + tags, AAC_CHANNEL_SIDE, gb, num_side);
|
|
|
- tags += num_side;
|
|
|
- decode_channel_map(layout_map + tags, AAC_CHANNEL_BACK, gb, num_back);
|
|
|
- tags += num_back;
|
|
|
- decode_channel_map(layout_map + tags, AAC_CHANNEL_LFE, gb, num_lfe);
|
|
|
- tags += num_lfe;
|
|
|
-
|
|
|
- skip_bits_long(gb, 4 * num_assoc_data);
|
|
|
-
|
|
|
- decode_channel_map(layout_map + tags, AAC_CHANNEL_CC, gb, num_cc);
|
|
|
- tags += num_cc;
|
|
|
-
|
|
|
- relative_align_get_bits(gb, byte_align_ref);
|
|
|
-
|
|
|
- /* comment field, first byte is length */
|
|
|
- comment_len = get_bits(gb, 8) * 8;
|
|
|
- if (get_bits_left(gb) < comment_len) {
|
|
|
- av_log(avctx, AV_LOG_ERROR, "decode_pce: " overread_err);
|
|
|
- return AVERROR_INVALIDDATA;
|
|
|
- }
|
|
|
- skip_bits_long(gb, comment_len);
|
|
|
- return tags;
|
|
|
-}
|
|
|
-
|
|
|
-/**
|
|
|
- * Decode GA "General Audio" specific configuration; reference: table 4.1.
|
|
|
- *
|
|
|
- * @param ac pointer to AACDecContext, may be null
|
|
|
- * @param avctx pointer to AVCCodecContext, used for logging
|
|
|
- *
|
|
|
- * @return Returns error status. 0 - OK, !0 - error
|
|
|
- */
|
|
|
-static int decode_ga_specific_config(AACDecContext *ac, AVCodecContext *avctx,
|
|
|
- GetBitContext *gb,
|
|
|
- int get_bit_alignment,
|
|
|
- MPEG4AudioConfig *m4ac,
|
|
|
- int channel_config)
|
|
|
-{
|
|
|
- int extension_flag, ret, ep_config, res_flags;
|
|
|
- uint8_t layout_map[MAX_ELEM_ID*4][3];
|
|
|
- int tags = 0;
|
|
|
-
|
|
|
- m4ac->frame_length_short = get_bits1(gb);
|
|
|
- if (m4ac->frame_length_short && m4ac->sbr == 1) {
|
|
|
- avpriv_report_missing_feature(avctx, "SBR with 960 frame length");
|
|
|
- if (ac) ac->warned_960_sbr = 1;
|
|
|
- m4ac->sbr = 0;
|
|
|
- m4ac->ps = 0;
|
|
|
- }
|
|
|
-
|
|
|
- if (get_bits1(gb)) // dependsOnCoreCoder
|
|
|
- skip_bits(gb, 14); // coreCoderDelay
|
|
|
- extension_flag = get_bits1(gb);
|
|
|
-
|
|
|
- if (m4ac->object_type == AOT_AAC_SCALABLE ||
|
|
|
- m4ac->object_type == AOT_ER_AAC_SCALABLE)
|
|
|
- skip_bits(gb, 3); // layerNr
|
|
|
-
|
|
|
- if (channel_config == 0) {
|
|
|
- skip_bits(gb, 4); // element_instance_tag
|
|
|
- tags = decode_pce(avctx, m4ac, layout_map, gb, get_bit_alignment);
|
|
|
- if (tags < 0)
|
|
|
- return tags;
|
|
|
- } else {
|
|
|
- if ((ret = set_default_channel_config(ac, avctx, layout_map,
|
|
|
- &tags, channel_config)))
|
|
|
- return ret;
|
|
|
- }
|
|
|
-
|
|
|
- if (count_channels(layout_map, tags) > 1) {
|
|
|
- m4ac->ps = 0;
|
|
|
- } else if (m4ac->sbr == 1 && m4ac->ps == -1)
|
|
|
- m4ac->ps = 1;
|
|
|
-
|
|
|
- if (ac && (ret = output_configure(ac, layout_map, tags, OC_GLOBAL_HDR, 0)))
|
|
|
- return ret;
|
|
|
-
|
|
|
- if (extension_flag) {
|
|
|
- switch (m4ac->object_type) {
|
|
|
- case AOT_ER_BSAC:
|
|
|
- skip_bits(gb, 5); // numOfSubFrame
|
|
|
- skip_bits(gb, 11); // layer_length
|
|
|
- break;
|
|
|
- case AOT_ER_AAC_LC:
|
|
|
- case AOT_ER_AAC_LTP:
|
|
|
- case AOT_ER_AAC_SCALABLE:
|
|
|
- case AOT_ER_AAC_LD:
|
|
|
- res_flags = get_bits(gb, 3);
|
|
|
- if (res_flags) {
|
|
|
- avpriv_report_missing_feature(avctx,
|
|
|
- "AAC data resilience (flags %x)",
|
|
|
- res_flags);
|
|
|
- return AVERROR_PATCHWELCOME;
|
|
|
- }
|
|
|
- break;
|
|
|
- }
|
|
|
- skip_bits1(gb); // extensionFlag3 (TBD in version 3)
|
|
|
- }
|
|
|
- switch (m4ac->object_type) {
|
|
|
- case AOT_ER_AAC_LC:
|
|
|
- case AOT_ER_AAC_LTP:
|
|
|
- case AOT_ER_AAC_SCALABLE:
|
|
|
- case AOT_ER_AAC_LD:
|
|
|
- ep_config = get_bits(gb, 2);
|
|
|
- if (ep_config) {
|
|
|
- avpriv_report_missing_feature(avctx,
|
|
|
- "epConfig %d", ep_config);
|
|
|
- return AVERROR_PATCHWELCOME;
|
|
|
- }
|
|
|
- }
|
|
|
- return 0;
|
|
|
-}
|
|
|
-
|
|
|
-static int decode_eld_specific_config(AACDecContext *ac, AVCodecContext *avctx,
|
|
|
- GetBitContext *gb,
|
|
|
- MPEG4AudioConfig *m4ac,
|
|
|
- int channel_config)
|
|
|
-{
|
|
|
- int ret, ep_config, res_flags;
|
|
|
- uint8_t layout_map[MAX_ELEM_ID*4][3];
|
|
|
- int tags = 0;
|
|
|
- const int ELDEXT_TERM = 0;
|
|
|
-
|
|
|
- m4ac->ps = 0;
|
|
|
- m4ac->sbr = 0;
|
|
|
- m4ac->frame_length_short = get_bits1(gb);
|
|
|
-
|
|
|
- res_flags = get_bits(gb, 3);
|
|
|
- if (res_flags) {
|
|
|
- avpriv_report_missing_feature(avctx,
|
|
|
- "AAC data resilience (flags %x)",
|
|
|
- res_flags);
|
|
|
- return AVERROR_PATCHWELCOME;
|
|
|
- }
|
|
|
-
|
|
|
- if (get_bits1(gb)) { // ldSbrPresentFlag
|
|
|
- avpriv_report_missing_feature(avctx,
|
|
|
- "Low Delay SBR");
|
|
|
- return AVERROR_PATCHWELCOME;
|
|
|
- }
|
|
|
-
|
|
|
- while (get_bits(gb, 4) != ELDEXT_TERM) {
|
|
|
- int len = get_bits(gb, 4);
|
|
|
- if (len == 15)
|
|
|
- len += get_bits(gb, 8);
|
|
|
- if (len == 15 + 255)
|
|
|
- len += get_bits(gb, 16);
|
|
|
- if (get_bits_left(gb) < len * 8 + 4) {
|
|
|
- av_log(avctx, AV_LOG_ERROR, overread_err);
|
|
|
- return AVERROR_INVALIDDATA;
|
|
|
- }
|
|
|
- skip_bits_long(gb, 8 * len);
|
|
|
- }
|
|
|
-
|
|
|
- if ((ret = set_default_channel_config(ac, avctx, layout_map,
|
|
|
- &tags, channel_config)))
|
|
|
- return ret;
|
|
|
-
|
|
|
- if (ac && (ret = output_configure(ac, layout_map, tags, OC_GLOBAL_HDR, 0)))
|
|
|
- return ret;
|
|
|
-
|
|
|
- ep_config = get_bits(gb, 2);
|
|
|
- if (ep_config) {
|
|
|
- avpriv_report_missing_feature(avctx,
|
|
|
- "epConfig %d", ep_config);
|
|
|
- return AVERROR_PATCHWELCOME;
|
|
|
- }
|
|
|
- return 0;
|
|
|
-}
|
|
|
-
|
|
|
-/**
|
|
|
- * Decode audio specific configuration; reference: table 1.13.
|
|
|
- *
|
|
|
- * @param ac pointer to AACDecContext, may be null
|
|
|
- * @param avctx pointer to AVCCodecContext, used for logging
|
|
|
- * @param m4ac pointer to MPEG4AudioConfig, used for parsing
|
|
|
- * @param gb buffer holding an audio specific config
|
|
|
- * @param get_bit_alignment relative alignment for byte align operations
|
|
|
- * @param sync_extension look for an appended sync extension
|
|
|
- *
|
|
|
- * @return Returns error status or number of consumed bits. <0 - error
|
|
|
- */
|
|
|
-static int decode_audio_specific_config_gb(AACDecContext *ac,
|
|
|
- AVCodecContext *avctx,
|
|
|
- MPEG4AudioConfig *m4ac,
|
|
|
- GetBitContext *gb,
|
|
|
- int get_bit_alignment,
|
|
|
- int sync_extension)
|
|
|
-{
|
|
|
- int i, ret;
|
|
|
- GetBitContext gbc = *gb;
|
|
|
- MPEG4AudioConfig m4ac_bak = *m4ac;
|
|
|
-
|
|
|
- if ((i = ff_mpeg4audio_get_config_gb(m4ac, &gbc, sync_extension, avctx)) < 0) {
|
|
|
- *m4ac = m4ac_bak;
|
|
|
- return AVERROR_INVALIDDATA;
|
|
|
- }
|
|
|
-
|
|
|
- if (m4ac->sampling_index > 12) {
|
|
|
- av_log(avctx, AV_LOG_ERROR,
|
|
|
- "invalid sampling rate index %d\n",
|
|
|
- m4ac->sampling_index);
|
|
|
- *m4ac = m4ac_bak;
|
|
|
- return AVERROR_INVALIDDATA;
|
|
|
- }
|
|
|
- if (m4ac->object_type == AOT_ER_AAC_LD &&
|
|
|
- (m4ac->sampling_index < 3 || m4ac->sampling_index > 7)) {
|
|
|
- av_log(avctx, AV_LOG_ERROR,
|
|
|
- "invalid low delay sampling rate index %d\n",
|
|
|
- m4ac->sampling_index);
|
|
|
- *m4ac = m4ac_bak;
|
|
|
- return AVERROR_INVALIDDATA;
|
|
|
- }
|
|
|
-
|
|
|
- skip_bits_long(gb, i);
|
|
|
-
|
|
|
- switch (m4ac->object_type) {
|
|
|
- case AOT_AAC_MAIN:
|
|
|
- case AOT_AAC_LC:
|
|
|
- case AOT_AAC_SSR:
|
|
|
- case AOT_AAC_LTP:
|
|
|
- case AOT_ER_AAC_LC:
|
|
|
- case AOT_ER_AAC_LD:
|
|
|
- if ((ret = decode_ga_specific_config(ac, avctx, gb, get_bit_alignment,
|
|
|
- m4ac, m4ac->chan_config)) < 0)
|
|
|
- return ret;
|
|
|
- break;
|
|
|
- case AOT_ER_AAC_ELD:
|
|
|
- if ((ret = decode_eld_specific_config(ac, avctx, gb,
|
|
|
- m4ac, m4ac->chan_config)) < 0)
|
|
|
- return ret;
|
|
|
- break;
|
|
|
- default:
|
|
|
- avpriv_report_missing_feature(avctx,
|
|
|
- "Audio object type %s%d",
|
|
|
- m4ac->sbr == 1 ? "SBR+" : "",
|
|
|
- m4ac->object_type);
|
|
|
- return AVERROR(ENOSYS);
|
|
|
- }
|
|
|
-
|
|
|
- ff_dlog(avctx,
|
|
|
- "AOT %d chan config %d sampling index %d (%d) SBR %d PS %d\n",
|
|
|
- m4ac->object_type, m4ac->chan_config, m4ac->sampling_index,
|
|
|
- m4ac->sample_rate, m4ac->sbr,
|
|
|
- m4ac->ps);
|
|
|
-
|
|
|
- return get_bits_count(gb);
|
|
|
-}
|
|
|
-
|
|
|
-static int decode_audio_specific_config(AACDecContext *ac,
|
|
|
- AVCodecContext *avctx,
|
|
|
- MPEG4AudioConfig *m4ac,
|
|
|
- const uint8_t *data, int64_t bit_size,
|
|
|
- int sync_extension)
|
|
|
-{
|
|
|
- int i, ret;
|
|
|
- GetBitContext gb;
|
|
|
-
|
|
|
- if (bit_size < 0 || bit_size > INT_MAX) {
|
|
|
- av_log(avctx, AV_LOG_ERROR, "Audio specific config size is invalid\n");
|
|
|
- return AVERROR_INVALIDDATA;
|
|
|
- }
|
|
|
-
|
|
|
- ff_dlog(avctx, "audio specific config size %d\n", (int)bit_size >> 3);
|
|
|
- for (i = 0; i < bit_size >> 3; i++)
|
|
|
- ff_dlog(avctx, "%02x ", data[i]);
|
|
|
- ff_dlog(avctx, "\n");
|
|
|
-
|
|
|
- if ((ret = init_get_bits(&gb, data, bit_size)) < 0)
|
|
|
- return ret;
|
|
|
-
|
|
|
- return decode_audio_specific_config_gb(ac, avctx, m4ac, &gb, 0,
|
|
|
- sync_extension);
|
|
|
-}
|
|
|
-
|
|
|
-static int sample_rate_idx (int rate)
|
|
|
-{
|
|
|
- if (92017 <= rate) return 0;
|
|
|
- else if (75132 <= rate) return 1;
|
|
|
- else if (55426 <= rate) return 2;
|
|
|
- else if (46009 <= rate) return 3;
|
|
|
- else if (37566 <= rate) return 4;
|
|
|
- else if (27713 <= rate) return 5;
|
|
|
- else if (23004 <= rate) return 6;
|
|
|
- else if (18783 <= rate) return 7;
|
|
|
- else if (13856 <= rate) return 8;
|
|
|
- else if (11502 <= rate) return 9;
|
|
|
- else if (9391 <= rate) return 10;
|
|
|
- else return 11;
|
|
|
-}
|
|
|
-
|
|
|
-static av_cold void aac_static_table_init(void)
|
|
|
-{
|
|
|
- ff_aac_sbr_init();
|
|
|
- ff_aac_sbr_init_fixed();
|
|
|
-
|
|
|
- ff_aacdec_common_init_once();
|
|
|
-}
|
|
|
-
|
|
|
-static AVOnce aac_table_init = AV_ONCE_INIT;
|
|
|
-
|
|
|
-static av_cold int aac_decode_init_internal(AVCodecContext *avctx)
|
|
|
-{
|
|
|
- AACDecContext *ac = avctx->priv_data;
|
|
|
- int ret;
|
|
|
-
|
|
|
- if (avctx->sample_rate > 96000)
|
|
|
- return AVERROR_INVALIDDATA;
|
|
|
-
|
|
|
- ret = ff_thread_once(&aac_table_init, &aac_static_table_init);
|
|
|
- if (ret != 0)
|
|
|
- return AVERROR_UNKNOWN;
|
|
|
-
|
|
|
- ac->avctx = avctx;
|
|
|
- ac->oc[1].m4ac.sample_rate = avctx->sample_rate;
|
|
|
-
|
|
|
- if (ac->is_fixed)
|
|
|
- avctx->sample_fmt = AV_SAMPLE_FMT_S32P;
|
|
|
- else
|
|
|
- avctx->sample_fmt = AV_SAMPLE_FMT_FLTP;
|
|
|
-
|
|
|
- if (avctx->extradata_size > 0) {
|
|
|
- if ((ret = decode_audio_specific_config(ac, ac->avctx, &ac->oc[1].m4ac,
|
|
|
- avctx->extradata,
|
|
|
- avctx->extradata_size * 8LL,
|
|
|
- 1)) < 0)
|
|
|
- return ret;
|
|
|
- } else {
|
|
|
- int sr, i;
|
|
|
- uint8_t layout_map[MAX_ELEM_ID*4][3];
|
|
|
- int layout_map_tags;
|
|
|
-
|
|
|
- sr = sample_rate_idx(avctx->sample_rate);
|
|
|
- ac->oc[1].m4ac.sampling_index = sr;
|
|
|
- ac->oc[1].m4ac.channels = avctx->ch_layout.nb_channels;
|
|
|
- ac->oc[1].m4ac.sbr = -1;
|
|
|
- ac->oc[1].m4ac.ps = -1;
|
|
|
-
|
|
|
- for (i = 0; i < FF_ARRAY_ELEMS(ff_mpeg4audio_channels); i++)
|
|
|
- if (ff_mpeg4audio_channels[i] == avctx->ch_layout.nb_channels)
|
|
|
- break;
|
|
|
- if (i == FF_ARRAY_ELEMS(ff_mpeg4audio_channels)) {
|
|
|
- i = 0;
|
|
|
- }
|
|
|
- ac->oc[1].m4ac.chan_config = i;
|
|
|
-
|
|
|
- if (ac->oc[1].m4ac.chan_config) {
|
|
|
- int ret = set_default_channel_config(ac, avctx, layout_map,
|
|
|
- &layout_map_tags, ac->oc[1].m4ac.chan_config);
|
|
|
- if (!ret)
|
|
|
- output_configure(ac, layout_map, layout_map_tags,
|
|
|
- OC_GLOBAL_HDR, 0);
|
|
|
- else if (avctx->err_recognition & AV_EF_EXPLODE)
|
|
|
- return AVERROR_INVALIDDATA;
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- return ff_aac_decode_init_common(avctx);
|
|
|
-}
|
|
|
-
|
|
|
-static av_cold int aac_decode_init(AVCodecContext *avctx)
|
|
|
-{
|
|
|
- AACDecContext *ac = avctx->priv_data;
|
|
|
- ac->is_fixed = 0;
|
|
|
- return aac_decode_init_internal(avctx);
|
|
|
-}
|
|
|
-
|
|
|
-static av_cold int aac_decode_init_fixed(AVCodecContext *avctx)
|
|
|
-{
|
|
|
- AACDecContext *ac = avctx->priv_data;
|
|
|
- ac->is_fixed = 1;
|
|
|
- return aac_decode_init_internal(avctx);
|
|
|
-}
|
|
|
-
|
|
|
-/**
|
|
|
- * Skip data_stream_element; reference: table 4.10.
|
|
|
- */
|
|
|
-static int skip_data_stream_element(AACDecContext *ac, GetBitContext *gb)
|
|
|
-{
|
|
|
- int byte_align = get_bits1(gb);
|
|
|
- int count = get_bits(gb, 8);
|
|
|
- if (count == 255)
|
|
|
- count += get_bits(gb, 8);
|
|
|
- if (byte_align)
|
|
|
- align_get_bits(gb);
|
|
|
-
|
|
|
- if (get_bits_left(gb) < 8 * count) {
|
|
|
- av_log(ac->avctx, AV_LOG_ERROR, "skip_data_stream_element: "overread_err);
|
|
|
- return AVERROR_INVALIDDATA;
|
|
|
- }
|
|
|
- skip_bits_long(gb, 8 * count);
|
|
|
- return 0;
|
|
|
-}
|
|
|
-
|
|
|
-static int decode_prediction(AACDecContext *ac, IndividualChannelStream *ics,
|
|
|
- GetBitContext *gb)
|
|
|
-{
|
|
|
- int sfb;
|
|
|
- if (get_bits1(gb)) {
|
|
|
- ics->predictor_reset_group = get_bits(gb, 5);
|
|
|
- if (ics->predictor_reset_group == 0 ||
|
|
|
- ics->predictor_reset_group > 30) {
|
|
|
- av_log(ac->avctx, AV_LOG_ERROR,
|
|
|
- "Invalid Predictor Reset Group.\n");
|
|
|
- return AVERROR_INVALIDDATA;
|
|
|
- }
|
|
|
- }
|
|
|
- for (sfb = 0; sfb < FFMIN(ics->max_sfb, ff_aac_pred_sfb_max[ac->oc[1].m4ac.sampling_index]); sfb++) {
|
|
|
- ics->prediction_used[sfb] = get_bits1(gb);
|
|
|
- }
|
|
|
- return 0;
|
|
|
-}
|
|
|
-
|
|
|
-/**
|
|
|
- * Decode Long Term Prediction data; reference: table 4.xx.
|
|
|
- */
|
|
|
-static void decode_ltp(AACDecContext *ac, LongTermPrediction *ltp,
|
|
|
- GetBitContext *gb, uint8_t max_sfb)
|
|
|
-{
|
|
|
- int sfb;
|
|
|
-
|
|
|
- ltp->lag = get_bits(gb, 11);
|
|
|
- if (ac->is_fixed)
|
|
|
- ltp->coef_fixed = Q30(ff_ltp_coef[get_bits(gb, 3)]);
|
|
|
- else
|
|
|
- ltp->coef = ff_ltp_coef[get_bits(gb, 3)];
|
|
|
-
|
|
|
- for (sfb = 0; sfb < FFMIN(max_sfb, MAX_LTP_LONG_SFB); sfb++)
|
|
|
- ltp->used[sfb] = get_bits1(gb);
|
|
|
-}
|
|
|
-
|
|
|
-/**
|
|
|
- * Decode Individual Channel Stream info; reference: table 4.6.
|
|
|
- */
|
|
|
-static int decode_ics_info(AACDecContext *ac, IndividualChannelStream *ics,
|
|
|
- GetBitContext *gb)
|
|
|
-{
|
|
|
- const MPEG4AudioConfig *const m4ac = &ac->oc[1].m4ac;
|
|
|
- const int aot = m4ac->object_type;
|
|
|
- const int sampling_index = m4ac->sampling_index;
|
|
|
- int ret_fail = AVERROR_INVALIDDATA;
|
|
|
-
|
|
|
- if (aot != AOT_ER_AAC_ELD) {
|
|
|
- if (get_bits1(gb)) {
|
|
|
- av_log(ac->avctx, AV_LOG_ERROR, "Reserved bit set.\n");
|
|
|
- if (ac->avctx->err_recognition & AV_EF_BITSTREAM)
|
|
|
- return AVERROR_INVALIDDATA;
|
|
|
- }
|
|
|
- ics->window_sequence[1] = ics->window_sequence[0];
|
|
|
- ics->window_sequence[0] = get_bits(gb, 2);
|
|
|
- if (aot == AOT_ER_AAC_LD &&
|
|
|
- ics->window_sequence[0] != ONLY_LONG_SEQUENCE) {
|
|
|
- av_log(ac->avctx, AV_LOG_ERROR,
|
|
|
- "AAC LD is only defined for ONLY_LONG_SEQUENCE but "
|
|
|
- "window sequence %d found.\n", ics->window_sequence[0]);
|
|
|
- ics->window_sequence[0] = ONLY_LONG_SEQUENCE;
|
|
|
- return AVERROR_INVALIDDATA;
|
|
|
- }
|
|
|
- ics->use_kb_window[1] = ics->use_kb_window[0];
|
|
|
- ics->use_kb_window[0] = get_bits1(gb);
|
|
|
- }
|
|
|
- ics->num_window_groups = 1;
|
|
|
- ics->group_len[0] = 1;
|
|
|
- if (ics->window_sequence[0] == EIGHT_SHORT_SEQUENCE) {
|
|
|
- int i;
|
|
|
- ics->max_sfb = get_bits(gb, 4);
|
|
|
- for (i = 0; i < 7; i++) {
|
|
|
- if (get_bits1(gb)) {
|
|
|
- ics->group_len[ics->num_window_groups - 1]++;
|
|
|
- } else {
|
|
|
- ics->num_window_groups++;
|
|
|
- ics->group_len[ics->num_window_groups - 1] = 1;
|
|
|
- }
|
|
|
- }
|
|
|
- ics->num_windows = 8;
|
|
|
- if (m4ac->frame_length_short) {
|
|
|
- ics->swb_offset = ff_swb_offset_120[sampling_index];
|
|
|
- ics->num_swb = ff_aac_num_swb_120[sampling_index];
|
|
|
- } else {
|
|
|
- ics->swb_offset = ff_swb_offset_128[sampling_index];
|
|
|
- ics->num_swb = ff_aac_num_swb_128[sampling_index];
|
|
|
- }
|
|
|
- ics->tns_max_bands = ff_tns_max_bands_128[sampling_index];
|
|
|
- ics->predictor_present = 0;
|
|
|
- } else {
|
|
|
- ics->max_sfb = get_bits(gb, 6);
|
|
|
- ics->num_windows = 1;
|
|
|
- if (aot == AOT_ER_AAC_LD || aot == AOT_ER_AAC_ELD) {
|
|
|
- if (m4ac->frame_length_short) {
|
|
|
- ics->swb_offset = ff_swb_offset_480[sampling_index];
|
|
|
- ics->num_swb = ff_aac_num_swb_480[sampling_index];
|
|
|
- ics->tns_max_bands = ff_tns_max_bands_480[sampling_index];
|
|
|
- } else {
|
|
|
- ics->swb_offset = ff_swb_offset_512[sampling_index];
|
|
|
- ics->num_swb = ff_aac_num_swb_512[sampling_index];
|
|
|
- ics->tns_max_bands = ff_tns_max_bands_512[sampling_index];
|
|
|
- }
|
|
|
- if (!ics->num_swb || !ics->swb_offset) {
|
|
|
- ret_fail = AVERROR_BUG;
|
|
|
- goto fail;
|
|
|
- }
|
|
|
- } else {
|
|
|
- if (m4ac->frame_length_short) {
|
|
|
- ics->num_swb = ff_aac_num_swb_960[sampling_index];
|
|
|
- ics->swb_offset = ff_swb_offset_960[sampling_index];
|
|
|
- } else {
|
|
|
- ics->num_swb = ff_aac_num_swb_1024[sampling_index];
|
|
|
- ics->swb_offset = ff_swb_offset_1024[sampling_index];
|
|
|
- }
|
|
|
- ics->tns_max_bands = ff_tns_max_bands_1024[sampling_index];
|
|
|
- }
|
|
|
- if (aot != AOT_ER_AAC_ELD) {
|
|
|
- ics->predictor_present = get_bits1(gb);
|
|
|
- ics->predictor_reset_group = 0;
|
|
|
- }
|
|
|
- if (ics->predictor_present) {
|
|
|
- if (aot == AOT_AAC_MAIN) {
|
|
|
- if (decode_prediction(ac, ics, gb)) {
|
|
|
- goto fail;
|
|
|
- }
|
|
|
- } else if (aot == AOT_AAC_LC ||
|
|
|
- aot == AOT_ER_AAC_LC) {
|
|
|
- av_log(ac->avctx, AV_LOG_ERROR,
|
|
|
- "Prediction is not allowed in AAC-LC.\n");
|
|
|
- goto fail;
|
|
|
- } else {
|
|
|
- if (aot == AOT_ER_AAC_LD) {
|
|
|
- av_log(ac->avctx, AV_LOG_ERROR,
|
|
|
- "LTP in ER AAC LD not yet implemented.\n");
|
|
|
- ret_fail = AVERROR_PATCHWELCOME;
|
|
|
- goto fail;
|
|
|
- }
|
|
|
- if ((ics->ltp.present = get_bits(gb, 1)))
|
|
|
- decode_ltp(ac, &ics->ltp, gb, ics->max_sfb);
|
|
|
- }
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- if (ics->max_sfb > ics->num_swb) {
|
|
|
- av_log(ac->avctx, AV_LOG_ERROR,
|
|
|
- "Number of scalefactor bands in group (%d) "
|
|
|
- "exceeds limit (%d).\n",
|
|
|
- ics->max_sfb, ics->num_swb);
|
|
|
- goto fail;
|
|
|
- }
|
|
|
-
|
|
|
- return 0;
|
|
|
-fail:
|
|
|
- ics->max_sfb = 0;
|
|
|
- return ret_fail;
|
|
|
-}
|
|
|
-
|
|
|
-/**
|
|
|
- * Decode band types (section_data payload); reference: table 4.46.
|
|
|
- *
|
|
|
- * @param band_type array of the used band type
|
|
|
- * @param band_type_run_end array of the last scalefactor band of a band type run
|
|
|
- *
|
|
|
- * @return Returns error status. 0 - OK, !0 - error
|
|
|
- */
|
|
|
-static int decode_band_types(AACDecContext *ac, enum BandType band_type[120],
|
|
|
- int band_type_run_end[120], GetBitContext *gb,
|
|
|
- IndividualChannelStream *ics)
|
|
|
-{
|
|
|
- int g, idx = 0;
|
|
|
- const int bits = (ics->window_sequence[0] == EIGHT_SHORT_SEQUENCE) ? 3 : 5;
|
|
|
- for (g = 0; g < ics->num_window_groups; g++) {
|
|
|
- int k = 0;
|
|
|
- while (k < ics->max_sfb) {
|
|
|
- uint8_t sect_end = k;
|
|
|
- int sect_len_incr;
|
|
|
- int sect_band_type = get_bits(gb, 4);
|
|
|
- if (sect_band_type == 12) {
|
|
|
- av_log(ac->avctx, AV_LOG_ERROR, "invalid band type\n");
|
|
|
- return AVERROR_INVALIDDATA;
|
|
|
- }
|
|
|
- do {
|
|
|
- sect_len_incr = get_bits(gb, bits);
|
|
|
- sect_end += sect_len_incr;
|
|
|
- if (get_bits_left(gb) < 0) {
|
|
|
- av_log(ac->avctx, AV_LOG_ERROR, "decode_band_types: "overread_err);
|
|
|
- return AVERROR_INVALIDDATA;
|
|
|
- }
|
|
|
- if (sect_end > ics->max_sfb) {
|
|
|
- av_log(ac->avctx, AV_LOG_ERROR,
|
|
|
- "Number of bands (%d) exceeds limit (%d).\n",
|
|
|
- sect_end, ics->max_sfb);
|
|
|
- return AVERROR_INVALIDDATA;
|
|
|
- }
|
|
|
- } while (sect_len_incr == (1 << bits) - 1);
|
|
|
- for (; k < sect_end; k++) {
|
|
|
- band_type [idx] = sect_band_type;
|
|
|
- band_type_run_end[idx++] = sect_end;
|
|
|
- }
|
|
|
- }
|
|
|
- }
|
|
|
- return 0;
|
|
|
-}
|
|
|
-
|
|
|
-/**
|
|
|
- * Decode scalefactors; reference: table 4.47.
|
|
|
- *
|
|
|
- * @param global_gain first scalefactor value as scalefactors are differentially coded
|
|
|
- * @param band_type array of the used band type
|
|
|
- * @param band_type_run_end array of the last scalefactor band of a band type run
|
|
|
- * @param sf array of scalefactors or intensity stereo positions
|
|
|
- *
|
|
|
- * @return Returns error status. 0 - OK, !0 - error
|
|
|
- */
|
|
|
-static int decode_scalefactors(AACDecContext *ac, int sfo[120],
|
|
|
- GetBitContext *gb,
|
|
|
- unsigned int global_gain,
|
|
|
- IndividualChannelStream *ics,
|
|
|
- enum BandType band_type[120],
|
|
|
- int band_type_run_end[120])
|
|
|
-{
|
|
|
- int g, i, idx = 0;
|
|
|
- int offset[3] = { global_gain, global_gain - NOISE_OFFSET, 0 };
|
|
|
- int clipped_offset;
|
|
|
- int noise_flag = 1;
|
|
|
- for (g = 0; g < ics->num_window_groups; g++) {
|
|
|
- for (i = 0; i < ics->max_sfb;) {
|
|
|
- int run_end = band_type_run_end[idx];
|
|
|
- switch (band_type[idx]) {
|
|
|
- case ZERO_BT:
|
|
|
- for (; i < run_end; i++, idx++)
|
|
|
- sfo[idx] = 0;
|
|
|
- break;
|
|
|
- case INTENSITY_BT: /* fallthrough */
|
|
|
- case INTENSITY_BT2:
|
|
|
- for (; i < run_end; i++, idx++) {
|
|
|
- offset[2] += get_vlc2(gb, ff_vlc_scalefactors, 7, 3) - SCALE_DIFF_ZERO;
|
|
|
- clipped_offset = av_clip(offset[2], -155, 100);
|
|
|
- if (offset[2] != clipped_offset) {
|
|
|
- avpriv_request_sample(ac->avctx,
|
|
|
- "If you heard an audible artifact, there may be a bug in the decoder. "
|
|
|
- "Clipped intensity stereo position (%d -> %d)",
|
|
|
- offset[2], clipped_offset);
|
|
|
- }
|
|
|
- sfo[idx] = clipped_offset;
|
|
|
- }
|
|
|
- break;
|
|
|
- case NOISE_BT:
|
|
|
- for (; i < run_end; i++, idx++) {
|
|
|
- if (noise_flag-- > 0)
|
|
|
- offset[1] += get_bits(gb, NOISE_PRE_BITS) - NOISE_PRE;
|
|
|
- else
|
|
|
- offset[1] += get_vlc2(gb, ff_vlc_scalefactors, 7, 3) - SCALE_DIFF_ZERO;
|
|
|
- clipped_offset = av_clip(offset[1], -100, 155);
|
|
|
- if (offset[1] != clipped_offset) {
|
|
|
- avpriv_request_sample(ac->avctx,
|
|
|
- "If you heard an audible artifact, there may be a bug in the decoder. "
|
|
|
- "Clipped noise gain (%d -> %d)",
|
|
|
- offset[1], clipped_offset);
|
|
|
- }
|
|
|
- sfo[idx] = clipped_offset;
|
|
|
- }
|
|
|
- break;
|
|
|
- default:
|
|
|
- for (; i < run_end; i++, idx++) {
|
|
|
- offset[0] += get_vlc2(gb, ff_vlc_scalefactors, 7, 3) - SCALE_DIFF_ZERO;
|
|
|
- if (offset[0] > 255U) {
|
|
|
- av_log(ac->avctx, AV_LOG_ERROR,
|
|
|
- "Scalefactor (%d) out of range.\n", offset[0]);
|
|
|
- return AVERROR_INVALIDDATA;
|
|
|
- }
|
|
|
- sfo[idx] = offset[0];
|
|
|
- }
|
|
|
- break;
|
|
|
- }
|
|
|
- }
|
|
|
- }
|
|
|
- return 0;
|
|
|
-}
|
|
|
-
|
|
|
-/**
|
|
|
- * Decode pulse data; reference: table 4.7.
|
|
|
- */
|
|
|
-static int decode_pulses(Pulse *pulse, GetBitContext *gb,
|
|
|
- const uint16_t *swb_offset, int num_swb)
|
|
|
-{
|
|
|
- int i, pulse_swb;
|
|
|
- pulse->num_pulse = get_bits(gb, 2) + 1;
|
|
|
- pulse_swb = get_bits(gb, 6);
|
|
|
- if (pulse_swb >= num_swb)
|
|
|
- return -1;
|
|
|
- pulse->pos[0] = swb_offset[pulse_swb];
|
|
|
- pulse->pos[0] += get_bits(gb, 5);
|
|
|
- if (pulse->pos[0] >= swb_offset[num_swb])
|
|
|
- return -1;
|
|
|
- pulse->amp[0] = get_bits(gb, 4);
|
|
|
- for (i = 1; i < pulse->num_pulse; i++) {
|
|
|
- pulse->pos[i] = get_bits(gb, 5) + pulse->pos[i - 1];
|
|
|
- if (pulse->pos[i] >= swb_offset[num_swb])
|
|
|
- return -1;
|
|
|
- pulse->amp[i] = get_bits(gb, 4);
|
|
|
- }
|
|
|
- return 0;
|
|
|
-}
|
|
|
-
|
|
|
-/**
|
|
|
- * Decode Temporal Noise Shaping data; reference: table 4.48.
|
|
|
- *
|
|
|
- * @return Returns error status. 0 - OK, !0 - error
|
|
|
- */
|
|
|
-static int decode_tns(AACDecContext *ac, TemporalNoiseShaping *tns,
|
|
|
- GetBitContext *gb, const IndividualChannelStream *ics)
|
|
|
-{
|
|
|
- int w, filt, i, coef_len, coef_res, coef_compress;
|
|
|
- const int is8 = ics->window_sequence[0] == EIGHT_SHORT_SEQUENCE;
|
|
|
- const int tns_max_order = is8 ? 7 : ac->oc[1].m4ac.object_type == AOT_AAC_MAIN ? 20 : 12;
|
|
|
- for (w = 0; w < ics->num_windows; w++) {
|
|
|
- if ((tns->n_filt[w] = get_bits(gb, 2 - is8))) {
|
|
|
- coef_res = get_bits1(gb);
|
|
|
-
|
|
|
- for (filt = 0; filt < tns->n_filt[w]; filt++) {
|
|
|
- int tmp2_idx;
|
|
|
- tns->length[w][filt] = get_bits(gb, 6 - 2 * is8);
|
|
|
-
|
|
|
- if ((tns->order[w][filt] = get_bits(gb, 5 - 2 * is8)) > tns_max_order) {
|
|
|
- av_log(ac->avctx, AV_LOG_ERROR,
|
|
|
- "TNS filter order %d is greater than maximum %d.\n",
|
|
|
- tns->order[w][filt], tns_max_order);
|
|
|
- tns->order[w][filt] = 0;
|
|
|
- return AVERROR_INVALIDDATA;
|
|
|
- }
|
|
|
- if (tns->order[w][filt]) {
|
|
|
- tns->direction[w][filt] = get_bits1(gb);
|
|
|
- coef_compress = get_bits1(gb);
|
|
|
- coef_len = coef_res + 3 - coef_compress;
|
|
|
- tmp2_idx = 2 * coef_compress + coef_res;
|
|
|
-
|
|
|
- for (i = 0; i < tns->order[w][filt]; i++) {
|
|
|
- if (ac->is_fixed)
|
|
|
- tns->coef_fixed[w][filt][i] = Q31(ff_tns_tmp2_map[tmp2_idx][get_bits(gb, coef_len)]);
|
|
|
- else
|
|
|
- tns->coef[w][filt][i] = ff_tns_tmp2_map[tmp2_idx][get_bits(gb, coef_len)];
|
|
|
- }
|
|
|
- }
|
|
|
- }
|
|
|
- }
|
|
|
- }
|
|
|
- return 0;
|
|
|
-}
|
|
|
-
|
|
|
-/**
|
|
|
- * Decode Mid/Side data; reference: table 4.54.
|
|
|
- *
|
|
|
- * @param ms_present Indicates mid/side stereo presence. [0] mask is all 0s;
|
|
|
- * [1] mask is decoded from bitstream; [2] mask is all 1s;
|
|
|
- * [3] reserved for scalable AAC
|
|
|
- */
|
|
|
-static void decode_mid_side_stereo(ChannelElement *cpe, GetBitContext *gb,
|
|
|
- int ms_present)
|
|
|
-{
|
|
|
- int idx;
|
|
|
- int max_idx = cpe->ch[0].ics.num_window_groups * cpe->ch[0].ics.max_sfb;
|
|
|
- if (ms_present == 1) {
|
|
|
- for (idx = 0; idx < max_idx; idx++)
|
|
|
- cpe->ms_mask[idx] = get_bits1(gb);
|
|
|
- } else if (ms_present == 2) {
|
|
|
- memset(cpe->ms_mask, 1, max_idx * sizeof(cpe->ms_mask[0]));
|
|
|
- }
|
|
|
-}
|
|
|
-
|
|
|
-static void decode_gain_control(SingleChannelElement * sce, GetBitContext * gb)
|
|
|
-{
|
|
|
- // wd_num, wd_test, aloc_size
|
|
|
- static const uint8_t gain_mode[4][3] = {
|
|
|
- {1, 0, 5}, // ONLY_LONG_SEQUENCE = 0,
|
|
|
- {2, 1, 2}, // LONG_START_SEQUENCE,
|
|
|
- {8, 0, 2}, // EIGHT_SHORT_SEQUENCE,
|
|
|
- {2, 1, 5}, // LONG_STOP_SEQUENCE
|
|
|
- };
|
|
|
-
|
|
|
- const int mode = sce->ics.window_sequence[0];
|
|
|
- uint8_t bd, wd, ad;
|
|
|
-
|
|
|
- // FIXME: Store the gain control data on |sce| and do something with it.
|
|
|
- uint8_t max_band = get_bits(gb, 2);
|
|
|
- for (bd = 0; bd < max_band; bd++) {
|
|
|
- for (wd = 0; wd < gain_mode[mode][0]; wd++) {
|
|
|
- uint8_t adjust_num = get_bits(gb, 3);
|
|
|
- for (ad = 0; ad < adjust_num; ad++) {
|
|
|
- skip_bits(gb, 4 + ((wd == 0 && gain_mode[mode][1])
|
|
|
- ? 4
|
|
|
- : gain_mode[mode][2]));
|
|
|
- }
|
|
|
- }
|
|
|
- }
|
|
|
-}
|
|
|
-
|
|
|
-/**
|
|
|
- * Decode an individual_channel_stream payload; reference: table 4.44.
|
|
|
- *
|
|
|
- * @param common_window Channels have independent [0], or shared [1], Individual Channel Stream information.
|
|
|
- * @param scale_flag scalable [1] or non-scalable [0] AAC (Unused until scalable AAC is implemented.)
|
|
|
- *
|
|
|
- * @return Returns error status. 0 - OK, !0 - error
|
|
|
- */
|
|
|
-int ff_aac_decode_ics(AACDecContext *ac, SingleChannelElement *sce,
|
|
|
- GetBitContext *gb, int common_window, int scale_flag)
|
|
|
-{
|
|
|
- Pulse pulse;
|
|
|
- TemporalNoiseShaping *tns = &sce->tns;
|
|
|
- IndividualChannelStream *ics = &sce->ics;
|
|
|
- int global_gain, eld_syntax, er_syntax, pulse_present = 0;
|
|
|
- int ret;
|
|
|
-
|
|
|
- eld_syntax = ac->oc[1].m4ac.object_type == AOT_ER_AAC_ELD;
|
|
|
- er_syntax = ac->oc[1].m4ac.object_type == AOT_ER_AAC_LC ||
|
|
|
- ac->oc[1].m4ac.object_type == AOT_ER_AAC_LTP ||
|
|
|
- ac->oc[1].m4ac.object_type == AOT_ER_AAC_LD ||
|
|
|
- ac->oc[1].m4ac.object_type == AOT_ER_AAC_ELD;
|
|
|
-
|
|
|
- /* This assignment is to silence a GCC warning about the variable being used
|
|
|
- * uninitialized when in fact it always is.
|
|
|
- */
|
|
|
- pulse.num_pulse = 0;
|
|
|
-
|
|
|
- global_gain = get_bits(gb, 8);
|
|
|
-
|
|
|
- if (!common_window && !scale_flag) {
|
|
|
- ret = decode_ics_info(ac, ics, gb);
|
|
|
- if (ret < 0)
|
|
|
- goto fail;
|
|
|
- }
|
|
|
-
|
|
|
- if ((ret = decode_band_types(ac, sce->band_type,
|
|
|
- sce->band_type_run_end, gb, ics)) < 0)
|
|
|
- goto fail;
|
|
|
- if ((ret = decode_scalefactors(ac, sce->sfo, gb, global_gain, ics,
|
|
|
- sce->band_type, sce->band_type_run_end)) < 0)
|
|
|
- goto fail;
|
|
|
-
|
|
|
- ac->dsp.dequant_scalefactors(sce);
|
|
|
-
|
|
|
- pulse_present = 0;
|
|
|
- if (!scale_flag) {
|
|
|
- if (!eld_syntax && (pulse_present = get_bits1(gb))) {
|
|
|
- if (ics->window_sequence[0] == EIGHT_SHORT_SEQUENCE) {
|
|
|
- av_log(ac->avctx, AV_LOG_ERROR,
|
|
|
- "Pulse tool not allowed in eight short sequence.\n");
|
|
|
- ret = AVERROR_INVALIDDATA;
|
|
|
- goto fail;
|
|
|
- }
|
|
|
- if (decode_pulses(&pulse, gb, ics->swb_offset, ics->num_swb)) {
|
|
|
- av_log(ac->avctx, AV_LOG_ERROR,
|
|
|
- "Pulse data corrupt or invalid.\n");
|
|
|
- ret = AVERROR_INVALIDDATA;
|
|
|
- goto fail;
|
|
|
- }
|
|
|
- }
|
|
|
- tns->present = get_bits1(gb);
|
|
|
- if (tns->present && !er_syntax) {
|
|
|
- ret = decode_tns(ac, tns, gb, ics);
|
|
|
- if (ret < 0)
|
|
|
- goto fail;
|
|
|
- }
|
|
|
- if (!eld_syntax && get_bits1(gb)) {
|
|
|
- decode_gain_control(sce, gb);
|
|
|
- if (!ac->warned_gain_control) {
|
|
|
- avpriv_report_missing_feature(ac->avctx, "Gain control");
|
|
|
- ac->warned_gain_control = 1;
|
|
|
- }
|
|
|
- }
|
|
|
- // I see no textual basis in the spec for this occurring after SSR gain
|
|
|
- // control, but this is what both reference and real implmentations do
|
|
|
- if (tns->present && er_syntax) {
|
|
|
- ret = decode_tns(ac, tns, gb, ics);
|
|
|
- if (ret < 0)
|
|
|
- goto fail;
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- ret = ac->proc.decode_spectrum_and_dequant(ac, gb,
|
|
|
- pulse_present ? &pulse : NULL,
|
|
|
- sce);
|
|
|
- if (ret < 0)
|
|
|
- goto fail;
|
|
|
-
|
|
|
- if (ac->oc[1].m4ac.object_type == AOT_AAC_MAIN && !common_window)
|
|
|
- ac->dsp.apply_prediction(ac, sce);
|
|
|
-
|
|
|
- return 0;
|
|
|
-fail:
|
|
|
- tns->present = 0;
|
|
|
- return ret;
|
|
|
-}
|
|
|
-
|
|
|
-/**
|
|
|
- * Decode a channel_pair_element; reference: table 4.4.
|
|
|
- *
|
|
|
- * @return Returns error status. 0 - OK, !0 - error
|
|
|
- */
|
|
|
-static int decode_cpe(AACDecContext *ac, GetBitContext *gb, ChannelElement *cpe)
|
|
|
-{
|
|
|
- int i, ret, common_window, ms_present = 0;
|
|
|
- int eld_syntax = ac->oc[1].m4ac.object_type == AOT_ER_AAC_ELD;
|
|
|
-
|
|
|
- common_window = eld_syntax || get_bits1(gb);
|
|
|
- if (common_window) {
|
|
|
- if (decode_ics_info(ac, &cpe->ch[0].ics, gb))
|
|
|
- return AVERROR_INVALIDDATA;
|
|
|
- i = cpe->ch[1].ics.use_kb_window[0];
|
|
|
- cpe->ch[1].ics = cpe->ch[0].ics;
|
|
|
- cpe->ch[1].ics.use_kb_window[1] = i;
|
|
|
- if (cpe->ch[1].ics.predictor_present &&
|
|
|
- (ac->oc[1].m4ac.object_type != AOT_AAC_MAIN))
|
|
|
- if ((cpe->ch[1].ics.ltp.present = get_bits(gb, 1)))
|
|
|
- decode_ltp(ac, &cpe->ch[1].ics.ltp, gb, cpe->ch[1].ics.max_sfb);
|
|
|
- ms_present = get_bits(gb, 2);
|
|
|
- if (ms_present == 3) {
|
|
|
- av_log(ac->avctx, AV_LOG_ERROR, "ms_present = 3 is reserved.\n");
|
|
|
- return AVERROR_INVALIDDATA;
|
|
|
- } else if (ms_present)
|
|
|
- decode_mid_side_stereo(cpe, gb, ms_present);
|
|
|
- }
|
|
|
- if ((ret = ff_aac_decode_ics(ac, &cpe->ch[0], gb, common_window, 0)))
|
|
|
- return ret;
|
|
|
- if ((ret = ff_aac_decode_ics(ac, &cpe->ch[1], gb, common_window, 0)))
|
|
|
- return ret;
|
|
|
-
|
|
|
- if (common_window) {
|
|
|
- if (ms_present)
|
|
|
- ac->dsp.apply_mid_side_stereo(ac, cpe);
|
|
|
- if (ac->oc[1].m4ac.object_type == AOT_AAC_MAIN) {
|
|
|
- ac->dsp.apply_prediction(ac, &cpe->ch[0]);
|
|
|
- ac->dsp.apply_prediction(ac, &cpe->ch[1]);
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- ac->dsp.apply_intensity_stereo(ac, cpe, ms_present);
|
|
|
- return 0;
|
|
|
-}
|
|
|
-
|
|
|
-/**
|
|
|
- * Parse whether channels are to be excluded from Dynamic Range Compression; reference: table 4.53.
|
|
|
- *
|
|
|
- * @return Returns number of bytes consumed.
|
|
|
- */
|
|
|
-static int decode_drc_channel_exclusions(DynamicRangeControl *che_drc,
|
|
|
- GetBitContext *gb)
|
|
|
-{
|
|
|
- int i;
|
|
|
- int num_excl_chan = 0;
|
|
|
-
|
|
|
- do {
|
|
|
- for (i = 0; i < 7; i++)
|
|
|
- che_drc->exclude_mask[num_excl_chan++] = get_bits1(gb);
|
|
|
- } while (num_excl_chan < MAX_CHANNELS - 7 && get_bits1(gb));
|
|
|
-
|
|
|
- return num_excl_chan / 7;
|
|
|
-}
|
|
|
-
|
|
|
-/**
|
|
|
- * Decode dynamic range information; reference: table 4.52.
|
|
|
- *
|
|
|
- * @return Returns number of bytes consumed.
|
|
|
- */
|
|
|
-static int decode_dynamic_range(DynamicRangeControl *che_drc,
|
|
|
- GetBitContext *gb)
|
|
|
-{
|
|
|
- int n = 1;
|
|
|
- int drc_num_bands = 1;
|
|
|
- int i;
|
|
|
-
|
|
|
- /* pce_tag_present? */
|
|
|
- if (get_bits1(gb)) {
|
|
|
- che_drc->pce_instance_tag = get_bits(gb, 4);
|
|
|
- skip_bits(gb, 4); // tag_reserved_bits
|
|
|
- n++;
|
|
|
- }
|
|
|
-
|
|
|
- /* excluded_chns_present? */
|
|
|
- if (get_bits1(gb)) {
|
|
|
- n += decode_drc_channel_exclusions(che_drc, gb);
|
|
|
- }
|
|
|
-
|
|
|
- /* drc_bands_present? */
|
|
|
- if (get_bits1(gb)) {
|
|
|
- che_drc->band_incr = get_bits(gb, 4);
|
|
|
- che_drc->interpolation_scheme = get_bits(gb, 4);
|
|
|
- n++;
|
|
|
- drc_num_bands += che_drc->band_incr;
|
|
|
- for (i = 0; i < drc_num_bands; i++) {
|
|
|
- che_drc->band_top[i] = get_bits(gb, 8);
|
|
|
- n++;
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- /* prog_ref_level_present? */
|
|
|
- if (get_bits1(gb)) {
|
|
|
- che_drc->prog_ref_level = get_bits(gb, 7);
|
|
|
- skip_bits1(gb); // prog_ref_level_reserved_bits
|
|
|
- n++;
|
|
|
- }
|
|
|
-
|
|
|
- for (i = 0; i < drc_num_bands; i++) {
|
|
|
- che_drc->dyn_rng_sgn[i] = get_bits1(gb);
|
|
|
- che_drc->dyn_rng_ctl[i] = get_bits(gb, 7);
|
|
|
- n++;
|
|
|
- }
|
|
|
-
|
|
|
- return n;
|
|
|
-}
|
|
|
-
|
|
|
-static int decode_fill(AACDecContext *ac, GetBitContext *gb, int len) {
|
|
|
- uint8_t buf[256];
|
|
|
- int i, major, minor;
|
|
|
-
|
|
|
- if (len < 13+7*8)
|
|
|
- goto unknown;
|
|
|
-
|
|
|
- get_bits(gb, 13); len -= 13;
|
|
|
-
|
|
|
- for(i=0; i+1<sizeof(buf) && len>=8; i++, len-=8)
|
|
|
- buf[i] = get_bits(gb, 8);
|
|
|
-
|
|
|
- buf[i] = 0;
|
|
|
- if (ac->avctx->debug & FF_DEBUG_PICT_INFO)
|
|
|
- av_log(ac->avctx, AV_LOG_DEBUG, "FILL:%s\n", buf);
|
|
|
-
|
|
|
- if (sscanf(buf, "libfaac %d.%d", &major, &minor) == 2){
|
|
|
- ac->avctx->internal->skip_samples = 1024;
|
|
|
- }
|
|
|
-
|
|
|
-unknown:
|
|
|
- skip_bits_long(gb, len);
|
|
|
-
|
|
|
- return 0;
|
|
|
-}
|
|
|
-
|
|
|
-/**
|
|
|
- * Decode extension data (incomplete); reference: table 4.51.
|
|
|
- *
|
|
|
- * @param cnt length of TYPE_FIL syntactic element in bytes
|
|
|
- *
|
|
|
- * @return Returns number of bytes consumed
|
|
|
- */
|
|
|
-static int decode_extension_payload(AACDecContext *ac, GetBitContext *gb, int cnt,
|
|
|
- ChannelElement *che, enum RawDataBlockType elem_type)
|
|
|
-{
|
|
|
- int crc_flag = 0;
|
|
|
- int res = cnt;
|
|
|
- int type = get_bits(gb, 4);
|
|
|
-
|
|
|
- if (ac->avctx->debug & FF_DEBUG_STARTCODE)
|
|
|
- av_log(ac->avctx, AV_LOG_DEBUG, "extension type: %d len:%d\n", type, cnt);
|
|
|
-
|
|
|
- switch (type) { // extension type
|
|
|
- case EXT_SBR_DATA_CRC:
|
|
|
- crc_flag++;
|
|
|
- case EXT_SBR_DATA:
|
|
|
- if (!che) {
|
|
|
- av_log(ac->avctx, AV_LOG_ERROR, "SBR was found before the first channel element.\n");
|
|
|
- return res;
|
|
|
- } else if (ac->oc[1].m4ac.frame_length_short) {
|
|
|
- if (!ac->warned_960_sbr)
|
|
|
- avpriv_report_missing_feature(ac->avctx,
|
|
|
- "SBR with 960 frame length");
|
|
|
- ac->warned_960_sbr = 1;
|
|
|
- skip_bits_long(gb, 8 * cnt - 4);
|
|
|
- return res;
|
|
|
- } else if (!ac->oc[1].m4ac.sbr) {
|
|
|
- av_log(ac->avctx, AV_LOG_ERROR, "SBR signaled to be not-present but was found in the bitstream.\n");
|
|
|
- skip_bits_long(gb, 8 * cnt - 4);
|
|
|
- return res;
|
|
|
- } else if (ac->oc[1].m4ac.sbr == -1 && ac->oc[1].status == OC_LOCKED) {
|
|
|
- av_log(ac->avctx, AV_LOG_ERROR, "Implicit SBR was found with a first occurrence after the first frame.\n");
|
|
|
- skip_bits_long(gb, 8 * cnt - 4);
|
|
|
- return res;
|
|
|
- } else if (ac->oc[1].m4ac.ps == -1 && ac->oc[1].status < OC_LOCKED &&
|
|
|
- ac->avctx->ch_layout.nb_channels == 1) {
|
|
|
- ac->oc[1].m4ac.sbr = 1;
|
|
|
- ac->oc[1].m4ac.ps = 1;
|
|
|
- ac->avctx->profile = AV_PROFILE_AAC_HE_V2;
|
|
|
- output_configure(ac, ac->oc[1].layout_map, ac->oc[1].layout_map_tags,
|
|
|
- ac->oc[1].status, 1);
|
|
|
- } else {
|
|
|
- ac->oc[1].m4ac.sbr = 1;
|
|
|
- ac->avctx->profile = AV_PROFILE_AAC_HE;
|
|
|
- }
|
|
|
-
|
|
|
- if (ac->is_fixed)
|
|
|
- res = ff_aac_sbr_decode_extension_fixed(ac, che, gb, crc_flag, cnt, elem_type);
|
|
|
- else
|
|
|
- res = ff_aac_sbr_decode_extension(ac, che, gb, crc_flag, cnt, elem_type);
|
|
|
-
|
|
|
-
|
|
|
- if (ac->oc[1].m4ac.ps == 1 && !ac->warned_he_aac_mono) {
|
|
|
- av_log(ac->avctx, AV_LOG_VERBOSE, "Treating HE-AAC mono as stereo.\n");
|
|
|
- ac->warned_he_aac_mono = 1;
|
|
|
- }
|
|
|
- break;
|
|
|
- case EXT_DYNAMIC_RANGE:
|
|
|
- res = decode_dynamic_range(&ac->che_drc, gb);
|
|
|
- break;
|
|
|
- case EXT_FILL:
|
|
|
- decode_fill(ac, gb, 8 * cnt - 4);
|
|
|
- break;
|
|
|
- case EXT_FILL_DATA:
|
|
|
- case EXT_DATA_ELEMENT:
|
|
|
- default:
|
|
|
- skip_bits_long(gb, 8 * cnt - 4);
|
|
|
- break;
|
|
|
- };
|
|
|
- return res;
|
|
|
-}
|
|
|
-
|
|
|
-/**
|
|
|
- * channel coupling transformation interface
|
|
|
- *
|
|
|
- * @param apply_coupling_method pointer to (in)dependent coupling function
|
|
|
- */
|
|
|
-static void apply_channel_coupling(AACDecContext *ac, ChannelElement *cc,
|
|
|
- enum RawDataBlockType type, int elem_id,
|
|
|
- enum CouplingPoint coupling_point,
|
|
|
- void (*apply_coupling_method)(AACDecContext *ac, SingleChannelElement *target, ChannelElement *cce, int index))
|
|
|
-{
|
|
|
- int i, c;
|
|
|
-
|
|
|
- for (i = 0; i < MAX_ELEM_ID; i++) {
|
|
|
- ChannelElement *cce = ac->che[TYPE_CCE][i];
|
|
|
- int index = 0;
|
|
|
-
|
|
|
- if (cce && cce->coup.coupling_point == coupling_point) {
|
|
|
- ChannelCoupling *coup = &cce->coup;
|
|
|
-
|
|
|
- for (c = 0; c <= coup->num_coupled; c++) {
|
|
|
- if (coup->type[c] == type && coup->id_select[c] == elem_id) {
|
|
|
- if (coup->ch_select[c] != 1) {
|
|
|
- apply_coupling_method(ac, &cc->ch[0], cce, index);
|
|
|
- if (coup->ch_select[c] != 0)
|
|
|
- index++;
|
|
|
- }
|
|
|
- if (coup->ch_select[c] != 2)
|
|
|
- apply_coupling_method(ac, &cc->ch[1], cce, index++);
|
|
|
- } else
|
|
|
- index += 1 + (coup->ch_select[c] == 3);
|
|
|
- }
|
|
|
- }
|
|
|
- }
|
|
|
-}
|
|
|
-
|
|
|
-/**
|
|
|
- * Convert spectral data to samples, applying all supported tools as appropriate.
|
|
|
- */
|
|
|
-static void spectral_to_sample(AACDecContext *ac, int samples)
|
|
|
-{
|
|
|
- int i, type;
|
|
|
- void (*imdct_and_window)(AACDecContext *ac, SingleChannelElement *sce);
|
|
|
- switch (ac->oc[1].m4ac.object_type) {
|
|
|
- case AOT_ER_AAC_LD:
|
|
|
- imdct_and_window = ac->dsp.imdct_and_windowing_ld;
|
|
|
- break;
|
|
|
- case AOT_ER_AAC_ELD:
|
|
|
- imdct_and_window = ac->dsp.imdct_and_windowing_eld;
|
|
|
- break;
|
|
|
- default:
|
|
|
- if (ac->oc[1].m4ac.frame_length_short)
|
|
|
- imdct_and_window = ac->dsp.imdct_and_windowing_960;
|
|
|
- else
|
|
|
- imdct_and_window = ac->dsp.imdct_and_windowing;
|
|
|
- }
|
|
|
- for (type = 3; type >= 0; type--) {
|
|
|
- for (i = 0; i < MAX_ELEM_ID; i++) {
|
|
|
- ChannelElement *che = ac->che[type][i];
|
|
|
- if (che && che->present) {
|
|
|
- if (type <= TYPE_CPE)
|
|
|
- apply_channel_coupling(ac, che, type, i, BEFORE_TNS, ac->dsp.apply_dependent_coupling);
|
|
|
- if (ac->oc[1].m4ac.object_type == AOT_AAC_LTP) {
|
|
|
- if (che->ch[0].ics.predictor_present) {
|
|
|
- if (che->ch[0].ics.ltp.present)
|
|
|
- ac->dsp.apply_ltp(ac, &che->ch[0]);
|
|
|
- if (che->ch[1].ics.ltp.present && type == TYPE_CPE)
|
|
|
- ac->dsp.apply_ltp(ac, &che->ch[1]);
|
|
|
- }
|
|
|
- }
|
|
|
- if (che->ch[0].tns.present)
|
|
|
- ac->dsp.apply_tns(che->ch[0].AAC_RENAME(coeffs),
|
|
|
- &che->ch[0].tns, &che->ch[0].ics, 1);
|
|
|
- if (che->ch[1].tns.present)
|
|
|
- ac->dsp.apply_tns(che->ch[1].AAC_RENAME(coeffs),
|
|
|
- &che->ch[1].tns, &che->ch[1].ics, 1);
|
|
|
- if (type <= TYPE_CPE)
|
|
|
- apply_channel_coupling(ac, che, type, i, BETWEEN_TNS_AND_IMDCT, ac->dsp.apply_dependent_coupling);
|
|
|
- if (type != TYPE_CCE || che->coup.coupling_point == AFTER_IMDCT) {
|
|
|
- imdct_and_window(ac, &che->ch[0]);
|
|
|
- if (ac->oc[1].m4ac.object_type == AOT_AAC_LTP)
|
|
|
- ac->dsp.update_ltp(ac, &che->ch[0]);
|
|
|
- if (type == TYPE_CPE) {
|
|
|
- imdct_and_window(ac, &che->ch[1]);
|
|
|
- if (ac->oc[1].m4ac.object_type == AOT_AAC_LTP)
|
|
|
- ac->dsp.update_ltp(ac, &che->ch[1]);
|
|
|
- }
|
|
|
- if (ac->oc[1].m4ac.sbr > 0) {
|
|
|
- if (ac->is_fixed)
|
|
|
- ff_aac_sbr_apply_fixed(ac, che, type,
|
|
|
- che->ch[0].AAC_RENAME(output),
|
|
|
- che->ch[1].AAC_RENAME(output));
|
|
|
- else
|
|
|
- ff_aac_sbr_apply(ac, che, type,
|
|
|
- che->ch[0].AAC_RENAME(output),
|
|
|
- che->ch[1].AAC_RENAME(output));
|
|
|
- }
|
|
|
- }
|
|
|
- if (type <= TYPE_CCE)
|
|
|
- apply_channel_coupling(ac, che, type, i, AFTER_IMDCT, ac->dsp.apply_independent_coupling);
|
|
|
- ac->dsp.clip_output(ac, che, type, samples);
|
|
|
- che->present = 0;
|
|
|
- } else if (che) {
|
|
|
- av_log(ac->avctx, AV_LOG_VERBOSE, "ChannelElement %d.%d missing \n", type, i);
|
|
|
- }
|
|
|
- }
|
|
|
- }
|
|
|
-}
|
|
|
-
|
|
|
-static int parse_adts_frame_header(AACDecContext *ac, GetBitContext *gb)
|
|
|
-{
|
|
|
- int size;
|
|
|
- AACADTSHeaderInfo hdr_info;
|
|
|
- uint8_t layout_map[MAX_ELEM_ID*4][3];
|
|
|
- int layout_map_tags, ret;
|
|
|
-
|
|
|
- size = ff_adts_header_parse(gb, &hdr_info);
|
|
|
- if (size > 0) {
|
|
|
- if (!ac->warned_num_aac_frames && hdr_info.num_aac_frames != 1) {
|
|
|
- // This is 2 for "VLB " audio in NSV files.
|
|
|
- // See samples/nsv/vlb_audio.
|
|
|
- avpriv_report_missing_feature(ac->avctx,
|
|
|
- "More than one AAC RDB per ADTS frame");
|
|
|
- ac->warned_num_aac_frames = 1;
|
|
|
- }
|
|
|
- push_output_configuration(ac);
|
|
|
- if (hdr_info.chan_config) {
|
|
|
- ac->oc[1].m4ac.chan_config = hdr_info.chan_config;
|
|
|
- if ((ret = set_default_channel_config(ac, ac->avctx,
|
|
|
- layout_map,
|
|
|
- &layout_map_tags,
|
|
|
- hdr_info.chan_config)) < 0)
|
|
|
- return ret;
|
|
|
- if ((ret = output_configure(ac, layout_map, layout_map_tags,
|
|
|
- FFMAX(ac->oc[1].status,
|
|
|
- OC_TRIAL_FRAME), 0)) < 0)
|
|
|
- return ret;
|
|
|
- } else {
|
|
|
- ac->oc[1].m4ac.chan_config = 0;
|
|
|
- /**
|
|
|
- * dual mono frames in Japanese DTV can have chan_config 0
|
|
|
- * WITHOUT specifying PCE.
|
|
|
- * thus, set dual mono as default.
|
|
|
- */
|
|
|
- if (ac->dmono_mode && ac->oc[0].status == OC_NONE) {
|
|
|
- layout_map_tags = 2;
|
|
|
- layout_map[0][0] = layout_map[1][0] = TYPE_SCE;
|
|
|
- layout_map[0][2] = layout_map[1][2] = AAC_CHANNEL_FRONT;
|
|
|
- layout_map[0][1] = 0;
|
|
|
- layout_map[1][1] = 1;
|
|
|
- if (output_configure(ac, layout_map, layout_map_tags,
|
|
|
- OC_TRIAL_FRAME, 0))
|
|
|
- return -7;
|
|
|
- }
|
|
|
- }
|
|
|
- ac->oc[1].m4ac.sample_rate = hdr_info.sample_rate;
|
|
|
- ac->oc[1].m4ac.sampling_index = hdr_info.sampling_index;
|
|
|
- ac->oc[1].m4ac.object_type = hdr_info.object_type;
|
|
|
- ac->oc[1].m4ac.frame_length_short = 0;
|
|
|
- if (ac->oc[0].status != OC_LOCKED ||
|
|
|
- ac->oc[0].m4ac.chan_config != hdr_info.chan_config ||
|
|
|
- ac->oc[0].m4ac.sample_rate != hdr_info.sample_rate) {
|
|
|
- ac->oc[1].m4ac.sbr = -1;
|
|
|
- ac->oc[1].m4ac.ps = -1;
|
|
|
- }
|
|
|
- if (!hdr_info.crc_absent)
|
|
|
- skip_bits(gb, 16);
|
|
|
- }
|
|
|
- return size;
|
|
|
-}
|
|
|
-
|
|
|
-static int aac_decode_er_frame(AVCodecContext *avctx, AVFrame *frame,
|
|
|
- int *got_frame_ptr, GetBitContext *gb)
|
|
|
-{
|
|
|
- AACDecContext *ac = avctx->priv_data;
|
|
|
- const MPEG4AudioConfig *const m4ac = &ac->oc[1].m4ac;
|
|
|
- ChannelElement *che;
|
|
|
- int err, i;
|
|
|
- int samples = m4ac->frame_length_short ? 960 : 1024;
|
|
|
- int chan_config = m4ac->chan_config;
|
|
|
- int aot = m4ac->object_type;
|
|
|
-
|
|
|
- if (aot == AOT_ER_AAC_LD || aot == AOT_ER_AAC_ELD)
|
|
|
- samples >>= 1;
|
|
|
-
|
|
|
- ac->frame = frame;
|
|
|
-
|
|
|
- if ((err = frame_configure_elements(avctx)) < 0)
|
|
|
- return err;
|
|
|
-
|
|
|
- // The AV_PROFILE_AAC_* defines are all object_type - 1
|
|
|
- // This may lead to an undefined profile being signaled
|
|
|
- ac->avctx->profile = aot - 1;
|
|
|
-
|
|
|
- ac->tags_mapped = 0;
|
|
|
-
|
|
|
- if (chan_config < 0 || (chan_config >= 8 && chan_config < 11) || chan_config >= 13) {
|
|
|
- avpriv_request_sample(avctx, "Unknown ER channel configuration %d",
|
|
|
- chan_config);
|
|
|
- return AVERROR_INVALIDDATA;
|
|
|
- }
|
|
|
- for (i = 0; i < ff_tags_per_config[chan_config]; i++) {
|
|
|
- const int elem_type = ff_aac_channel_layout_map[chan_config-1][i][0];
|
|
|
- const int elem_id = ff_aac_channel_layout_map[chan_config-1][i][1];
|
|
|
- if (!(che=get_che(ac, elem_type, elem_id))) {
|
|
|
- av_log(ac->avctx, AV_LOG_ERROR,
|
|
|
- "channel element %d.%d is not allocated\n",
|
|
|
- elem_type, elem_id);
|
|
|
- return AVERROR_INVALIDDATA;
|
|
|
- }
|
|
|
- che->present = 1;
|
|
|
- if (aot != AOT_ER_AAC_ELD)
|
|
|
- skip_bits(gb, 4);
|
|
|
- switch (elem_type) {
|
|
|
- case TYPE_SCE:
|
|
|
- err = ff_aac_decode_ics(ac, &che->ch[0], gb, 0, 0);
|
|
|
- break;
|
|
|
- case TYPE_CPE:
|
|
|
- err = decode_cpe(ac, gb, che);
|
|
|
- break;
|
|
|
- case TYPE_LFE:
|
|
|
- err = ff_aac_decode_ics(ac, &che->ch[0], gb, 0, 0);
|
|
|
- break;
|
|
|
- }
|
|
|
- if (err < 0)
|
|
|
- return err;
|
|
|
- }
|
|
|
-
|
|
|
- spectral_to_sample(ac, samples);
|
|
|
-
|
|
|
- if (!ac->frame->data[0] && samples) {
|
|
|
- av_log(avctx, AV_LOG_ERROR, "no frame data found\n");
|
|
|
- return AVERROR_INVALIDDATA;
|
|
|
- }
|
|
|
-
|
|
|
- ac->frame->nb_samples = samples;
|
|
|
- ac->frame->sample_rate = avctx->sample_rate;
|
|
|
- *got_frame_ptr = 1;
|
|
|
-
|
|
|
- skip_bits_long(gb, get_bits_left(gb));
|
|
|
- return 0;
|
|
|
-}
|
|
|
-
|
|
|
-static int aac_decode_frame_int(AVCodecContext *avctx, AVFrame *frame,
|
|
|
- int *got_frame_ptr, GetBitContext *gb,
|
|
|
- const AVPacket *avpkt)
|
|
|
-{
|
|
|
- AACDecContext *ac = avctx->priv_data;
|
|
|
- ChannelElement *che = NULL, *che_prev = NULL;
|
|
|
- enum RawDataBlockType elem_type, che_prev_type = TYPE_END;
|
|
|
- int err, elem_id;
|
|
|
- int samples = 0, multiplier, audio_found = 0, pce_found = 0;
|
|
|
- int is_dmono, sce_count = 0;
|
|
|
- int payload_alignment;
|
|
|
- uint8_t che_presence[4][MAX_ELEM_ID] = {{0}};
|
|
|
-
|
|
|
- ac->frame = frame;
|
|
|
-
|
|
|
- if (show_bits(gb, 12) == 0xfff) {
|
|
|
- if ((err = parse_adts_frame_header(ac, gb)) < 0) {
|
|
|
- av_log(avctx, AV_LOG_ERROR, "Error decoding AAC frame header.\n");
|
|
|
- goto fail;
|
|
|
- }
|
|
|
- if (ac->oc[1].m4ac.sampling_index > 12) {
|
|
|
- av_log(ac->avctx, AV_LOG_ERROR, "invalid sampling rate index %d\n", ac->oc[1].m4ac.sampling_index);
|
|
|
- err = AVERROR_INVALIDDATA;
|
|
|
- goto fail;
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- if ((err = frame_configure_elements(avctx)) < 0)
|
|
|
- goto fail;
|
|
|
-
|
|
|
- // The AV_PROFILE_AAC_* defines are all object_type - 1
|
|
|
- // This may lead to an undefined profile being signaled
|
|
|
- ac->avctx->profile = ac->oc[1].m4ac.object_type - 1;
|
|
|
-
|
|
|
- payload_alignment = get_bits_count(gb);
|
|
|
- ac->tags_mapped = 0;
|
|
|
- // parse
|
|
|
- while ((elem_type = get_bits(gb, 3)) != TYPE_END) {
|
|
|
- elem_id = get_bits(gb, 4);
|
|
|
-
|
|
|
- if (avctx->debug & FF_DEBUG_STARTCODE)
|
|
|
- av_log(avctx, AV_LOG_DEBUG, "Elem type:%x id:%x\n", elem_type, elem_id);
|
|
|
-
|
|
|
- if (!avctx->ch_layout.nb_channels && elem_type != TYPE_PCE) {
|
|
|
- err = AVERROR_INVALIDDATA;
|
|
|
- goto fail;
|
|
|
- }
|
|
|
-
|
|
|
- if (elem_type < TYPE_DSE) {
|
|
|
- if (che_presence[elem_type][elem_id]) {
|
|
|
- int error = che_presence[elem_type][elem_id] > 1;
|
|
|
- av_log(ac->avctx, error ? AV_LOG_ERROR : AV_LOG_DEBUG, "channel element %d.%d duplicate\n",
|
|
|
- elem_type, elem_id);
|
|
|
- if (error) {
|
|
|
- err = AVERROR_INVALIDDATA;
|
|
|
- goto fail;
|
|
|
- }
|
|
|
- }
|
|
|
- che_presence[elem_type][elem_id]++;
|
|
|
-
|
|
|
- if (!(che=get_che(ac, elem_type, elem_id))) {
|
|
|
- av_log(ac->avctx, AV_LOG_ERROR, "channel element %d.%d is not allocated\n",
|
|
|
- elem_type, elem_id);
|
|
|
- err = AVERROR_INVALIDDATA;
|
|
|
- goto fail;
|
|
|
- }
|
|
|
- samples = ac->oc[1].m4ac.frame_length_short ? 960 : 1024;
|
|
|
- che->present = 1;
|
|
|
- }
|
|
|
-
|
|
|
- switch (elem_type) {
|
|
|
-
|
|
|
- case TYPE_SCE:
|
|
|
- err = ff_aac_decode_ics(ac, &che->ch[0], gb, 0, 0);
|
|
|
- audio_found = 1;
|
|
|
- sce_count++;
|
|
|
- break;
|
|
|
-
|
|
|
- case TYPE_CPE:
|
|
|
- err = decode_cpe(ac, gb, che);
|
|
|
- audio_found = 1;
|
|
|
- break;
|
|
|
-
|
|
|
- case TYPE_CCE:
|
|
|
- err = ac->proc.decode_cce(ac, gb, che);
|
|
|
- break;
|
|
|
-
|
|
|
- case TYPE_LFE:
|
|
|
- err = ff_aac_decode_ics(ac, &che->ch[0], gb, 0, 0);
|
|
|
- audio_found = 1;
|
|
|
- break;
|
|
|
-
|
|
|
- case TYPE_DSE:
|
|
|
- err = skip_data_stream_element(ac, gb);
|
|
|
- break;
|
|
|
-
|
|
|
- case TYPE_PCE: {
|
|
|
- uint8_t layout_map[MAX_ELEM_ID*4][3] = {{0}};
|
|
|
- int tags;
|
|
|
-
|
|
|
- int pushed = push_output_configuration(ac);
|
|
|
- if (pce_found && !pushed) {
|
|
|
- err = AVERROR_INVALIDDATA;
|
|
|
- goto fail;
|
|
|
- }
|
|
|
-
|
|
|
- tags = decode_pce(avctx, &ac->oc[1].m4ac, layout_map, gb,
|
|
|
- payload_alignment);
|
|
|
- if (tags < 0) {
|
|
|
- err = tags;
|
|
|
- break;
|
|
|
- }
|
|
|
- if (pce_found) {
|
|
|
- av_log(avctx, AV_LOG_ERROR,
|
|
|
- "Not evaluating a further program_config_element as this construct is dubious at best.\n");
|
|
|
- pop_output_configuration(ac);
|
|
|
- } else {
|
|
|
- err = output_configure(ac, layout_map, tags, OC_TRIAL_PCE, 1);
|
|
|
- if (!err)
|
|
|
- ac->oc[1].m4ac.chan_config = 0;
|
|
|
- pce_found = 1;
|
|
|
- }
|
|
|
- break;
|
|
|
- }
|
|
|
-
|
|
|
- case TYPE_FIL:
|
|
|
- if (elem_id == 15)
|
|
|
- elem_id += get_bits(gb, 8) - 1;
|
|
|
- if (get_bits_left(gb) < 8 * elem_id) {
|
|
|
- av_log(avctx, AV_LOG_ERROR, "TYPE_FIL: "overread_err);
|
|
|
- err = AVERROR_INVALIDDATA;
|
|
|
- goto fail;
|
|
|
- }
|
|
|
- err = 0;
|
|
|
- while (elem_id > 0) {
|
|
|
- int ret = decode_extension_payload(ac, gb, elem_id, che_prev, che_prev_type);
|
|
|
- if (ret < 0) {
|
|
|
- err = ret;
|
|
|
- break;
|
|
|
- }
|
|
|
- elem_id -= ret;
|
|
|
- }
|
|
|
- break;
|
|
|
-
|
|
|
- default:
|
|
|
- err = AVERROR_BUG; /* should not happen, but keeps compiler happy */
|
|
|
- break;
|
|
|
- }
|
|
|
-
|
|
|
- if (elem_type < TYPE_DSE) {
|
|
|
- che_prev = che;
|
|
|
- che_prev_type = elem_type;
|
|
|
- }
|
|
|
-
|
|
|
- if (err)
|
|
|
- goto fail;
|
|
|
-
|
|
|
- if (get_bits_left(gb) < 3) {
|
|
|
- av_log(avctx, AV_LOG_ERROR, overread_err);
|
|
|
- err = AVERROR_INVALIDDATA;
|
|
|
- goto fail;
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- if (!avctx->ch_layout.nb_channels) {
|
|
|
- *got_frame_ptr = 0;
|
|
|
- return 0;
|
|
|
- }
|
|
|
-
|
|
|
- multiplier = (ac->oc[1].m4ac.sbr == 1) ? ac->oc[1].m4ac.ext_sample_rate > ac->oc[1].m4ac.sample_rate : 0;
|
|
|
- samples <<= multiplier;
|
|
|
-
|
|
|
- spectral_to_sample(ac, samples);
|
|
|
-
|
|
|
- if (ac->oc[1].status && audio_found) {
|
|
|
- avctx->sample_rate = ac->oc[1].m4ac.sample_rate << multiplier;
|
|
|
- avctx->frame_size = samples;
|
|
|
- ac->oc[1].status = OC_LOCKED;
|
|
|
- }
|
|
|
-
|
|
|
- if (!ac->frame->data[0] && samples) {
|
|
|
- av_log(avctx, AV_LOG_ERROR, "no frame data found\n");
|
|
|
- err = AVERROR_INVALIDDATA;
|
|
|
- goto fail;
|
|
|
- }
|
|
|
-
|
|
|
- if (samples) {
|
|
|
- ac->frame->nb_samples = samples;
|
|
|
- ac->frame->sample_rate = avctx->sample_rate;
|
|
|
- } else
|
|
|
- av_frame_unref(ac->frame);
|
|
|
- *got_frame_ptr = !!samples;
|
|
|
-
|
|
|
- /* for dual-mono audio (SCE + SCE) */
|
|
|
- is_dmono = ac->dmono_mode && sce_count == 2 &&
|
|
|
- !av_channel_layout_compare(&ac->oc[1].ch_layout,
|
|
|
- &(AVChannelLayout)AV_CHANNEL_LAYOUT_STEREO);
|
|
|
- if (is_dmono) {
|
|
|
- if (ac->dmono_mode == 1)
|
|
|
- frame->data[1] = frame->data[0];
|
|
|
- else if (ac->dmono_mode == 2)
|
|
|
- frame->data[0] = frame->data[1];
|
|
|
- }
|
|
|
-
|
|
|
- return 0;
|
|
|
-fail:
|
|
|
- pop_output_configuration(ac);
|
|
|
- return err;
|
|
|
-}
|
|
|
-
|
|
|
-static int aac_decode_frame(AVCodecContext *avctx, AVFrame *frame,
|
|
|
- int *got_frame_ptr, AVPacket *avpkt)
|
|
|
-{
|
|
|
- AACDecContext *ac = avctx->priv_data;
|
|
|
- const uint8_t *buf = avpkt->data;
|
|
|
- int buf_size = avpkt->size;
|
|
|
- GetBitContext gb;
|
|
|
- int buf_consumed;
|
|
|
- int buf_offset;
|
|
|
- int err;
|
|
|
- size_t new_extradata_size;
|
|
|
- const uint8_t *new_extradata = av_packet_get_side_data(avpkt,
|
|
|
- AV_PKT_DATA_NEW_EXTRADATA,
|
|
|
- &new_extradata_size);
|
|
|
- size_t jp_dualmono_size;
|
|
|
- const uint8_t *jp_dualmono = av_packet_get_side_data(avpkt,
|
|
|
- AV_PKT_DATA_JP_DUALMONO,
|
|
|
- &jp_dualmono_size);
|
|
|
-
|
|
|
- if (new_extradata) {
|
|
|
- /* discard previous configuration */
|
|
|
- ac->oc[1].status = OC_NONE;
|
|
|
- err = decode_audio_specific_config(ac, ac->avctx, &ac->oc[1].m4ac,
|
|
|
- new_extradata,
|
|
|
- new_extradata_size * 8LL, 1);
|
|
|
- if (err < 0) {
|
|
|
- return err;
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- ac->dmono_mode = 0;
|
|
|
- if (jp_dualmono && jp_dualmono_size > 0)
|
|
|
- ac->dmono_mode = 1 + *jp_dualmono;
|
|
|
- if (ac->force_dmono_mode >= 0)
|
|
|
- ac->dmono_mode = ac->force_dmono_mode;
|
|
|
-
|
|
|
- if (INT_MAX / 8 <= buf_size)
|
|
|
- return AVERROR_INVALIDDATA;
|
|
|
-
|
|
|
- if ((err = init_get_bits8(&gb, buf, buf_size)) < 0)
|
|
|
- return err;
|
|
|
-
|
|
|
- switch (ac->oc[1].m4ac.object_type) {
|
|
|
- case AOT_ER_AAC_LC:
|
|
|
- case AOT_ER_AAC_LTP:
|
|
|
- case AOT_ER_AAC_LD:
|
|
|
- case AOT_ER_AAC_ELD:
|
|
|
- err = aac_decode_er_frame(avctx, frame, got_frame_ptr, &gb);
|
|
|
- break;
|
|
|
- default:
|
|
|
- err = aac_decode_frame_int(avctx, frame, got_frame_ptr, &gb, avpkt);
|
|
|
- }
|
|
|
- if (err < 0)
|
|
|
- return err;
|
|
|
-
|
|
|
- buf_consumed = (get_bits_count(&gb) + 7) >> 3;
|
|
|
- for (buf_offset = buf_consumed; buf_offset < buf_size; buf_offset++)
|
|
|
- if (buf[buf_offset])
|
|
|
- break;
|
|
|
-
|
|
|
- return buf_size > buf_offset ? buf_consumed : buf_size;
|
|
|
-}
|
|
|
-
|
|
|
-#include "libavcodec/aac/aacdec_latm.h"
|
|
|
-
|
|
|
-const FFCodec ff_aac_decoder = {
|
|
|
- .p.name = "aac",
|
|
|
- CODEC_LONG_NAME("AAC (Advanced Audio Coding)"),
|
|
|
- .p.type = AVMEDIA_TYPE_AUDIO,
|
|
|
- .p.id = AV_CODEC_ID_AAC,
|
|
|
- .p.priv_class = &ff_aac_decoder_class,
|
|
|
- .priv_data_size = sizeof(AACDecContext),
|
|
|
- .init = aac_decode_init,
|
|
|
- .close = ff_aac_decode_close,
|
|
|
- FF_CODEC_DECODE_CB(aac_decode_frame),
|
|
|
- .p.sample_fmts = (const enum AVSampleFormat[]) {
|
|
|
- AV_SAMPLE_FMT_FLTP, AV_SAMPLE_FMT_NONE
|
|
|
- },
|
|
|
- .p.capabilities = AV_CODEC_CAP_CHANNEL_CONF | AV_CODEC_CAP_DR1,
|
|
|
- .caps_internal = FF_CODEC_CAP_INIT_CLEANUP,
|
|
|
- .p.ch_layouts = ff_aac_ch_layout,
|
|
|
- .flush = flush,
|
|
|
- .p.profiles = NULL_IF_CONFIG_SMALL(ff_aac_profiles),
|
|
|
-};
|
|
|
-
|
|
|
-const FFCodec ff_aac_fixed_decoder = {
|
|
|
- .p.name = "aac_fixed",
|
|
|
- CODEC_LONG_NAME("AAC (Advanced Audio Coding)"),
|
|
|
- .p.type = AVMEDIA_TYPE_AUDIO,
|
|
|
- .p.id = AV_CODEC_ID_AAC,
|
|
|
- .p.priv_class = &ff_aac_decoder_class,
|
|
|
- .priv_data_size = sizeof(AACDecContext),
|
|
|
- .init = aac_decode_init_fixed,
|
|
|
- .close = ff_aac_decode_close,
|
|
|
- FF_CODEC_DECODE_CB(aac_decode_frame),
|
|
|
- .p.sample_fmts = (const enum AVSampleFormat[]) {
|
|
|
- AV_SAMPLE_FMT_S32P, AV_SAMPLE_FMT_NONE
|
|
|
- },
|
|
|
- .p.capabilities = AV_CODEC_CAP_CHANNEL_CONF | AV_CODEC_CAP_DR1,
|
|
|
- .caps_internal = FF_CODEC_CAP_INIT_CLEANUP,
|
|
|
- .p.ch_layouts = ff_aac_ch_layout,
|
|
|
- .p.profiles = NULL_IF_CONFIG_SMALL(ff_aac_profiles),
|
|
|
- .flush = flush,
|
|
|
-};
|
Lynne