*
* AAC LATM decoder
* Copyright (c) 2008-2010 Paul Kendall <paul@kcbbs.gen.nz>
- * Copyright (c) 2010 Janne Grunau <janne-ffmpeg@jannau.net>
+ * Copyright (c) 2010 Janne Grunau <janne-libav@jannau.net>
*
* This file is part of Libav.
*
static const char overread_err[] = "Input buffer exhausted before END element found\n";
-static ChannelElement *get_che(AACContext *ac, int type, int elem_id)
-{
- // For PCE based channel configurations map the channels solely based on tags.
- if (!ac->m4ac.chan_config) {
- return ac->tag_che_map[type][elem_id];
- }
- // For indexed channel configurations map the channels solely based on position.
- switch (ac->m4ac.chan_config) {
- 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 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 == tags_per_config[ac->m4ac.chan_config] - 1 && (type == TYPE_LFE || type == TYPE_SCE)) {
- 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:
- if (ac->tags_mapped == 2 && ac->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->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->m4ac.chan_config == 2) {
- return NULL;
- }
- 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;
- }
-}
-
static int count_channels(uint8_t (*layout)[3], int tags)
{
int i, sum = 0;
if (type != TYPE_CCE) {
ac->output_data[(*channels)++] = ac->che[type][id]->ch[0].ret;
if (type == TYPE_CPE ||
- (type == TYPE_SCE && ac->m4ac.ps == 1)) {
+ (type == TYPE_SCE && ac->oc[1].m4ac.ps == 1)) {
ac->output_data[(*channels)++] = ac->che[type][id]->ch[1].ret;
}
}
break;
if (layout_map[i][0] == TYPE_CPE) {
if (sce_parity) {
- if (pos == AAC_CHANNEL_FRONT || !first_cpe) {
+ if (pos == AAC_CHANNEL_FRONT && !first_cpe) {
sce_parity = 0;
} else {
return -1;
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[MAX_ELEM_ID] = {{ 0 }};
+ struct elem_to_channel e2c_vec[4*MAX_ELEM_ID] = {{ 0 }};
int num_front_channels, num_side_channels, num_back_channels;
uint64_t layout;
+ if (FF_ARRAY_ELEMS(e2c_vec) < tags)
+ return 0;
+
i = 0;
num_front_channels =
count_paired_channels(layout_map, tags, AAC_CHANNEL_FRONT, &i);
return layout;
}
+/**
+ * Save current output configuration if and only if it has been locked.
+ */
+static void push_output_configuration(AACContext *ac) {
+ if (ac->oc[1].status == OC_LOCKED) {
+ ac->oc[0] = ac->oc[1];
+ }
+ ac->oc[1].status = OC_NONE;
+}
+
+/**
+ * Restore the previous output configuration if and only if the current
+ * configuration is unlocked.
+ */
+static void pop_output_configuration(AACContext *ac) {
+ if (ac->oc[1].status != OC_LOCKED) {
+ ac->oc[1] = ac->oc[0];
+ ac->avctx->channels = ac->oc[1].channels;
+ ac->avctx->channel_layout = ac->oc[1].channels;
+ }
+}
+
/**
* Configure output channel order based on the current program configuration element.
*
- * @param che_pos current channel position configuration
- *
* @return Returns error status. 0 - OK, !0 - error
*/
-static av_cold int output_configure(AACContext *ac,
+static int output_configure(AACContext *ac,
uint8_t layout_map[MAX_ELEM_ID*4][3], int tags,
int channel_config, enum OCStatus oc_type)
{
int i, channels = 0, ret;
uint64_t layout = 0;
- if (ac->layout_map != layout_map) {
- memcpy(ac->layout_map, layout_map, tags * sizeof(layout_map[0]));
- ac->layout_map_tags = tags;
+ 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;
}
// Try to sniff a reasonable channel order, otherwise output the
if (ret < 0)
return ret;
}
+ 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;
+ }
+ }
memcpy(ac->tag_che_map, ac->che, 4 * MAX_ELEM_ID * sizeof(ac->che[0][0]));
- avctx->channel_layout = layout;
- avctx->channels = channels;
- ac->output_configured = oc_type;
+ avctx->channel_layout = ac->oc[1].channel_layout = layout;
+ avctx->channels = ac->oc[1].channels = channels;
+ ac->oc[1].status = oc_type;
return 0;
}
+/**
+ * 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(AVCodecContext *avctx,
+ uint8_t (*layout_map)[3],
+ int *tags,
+ int channel_config)
+{
+ if (channel_config < 1 || channel_config > 7) {
+ av_log(avctx, AV_LOG_ERROR, "invalid default channel configuration (%d)\n",
+ channel_config);
+ return -1;
+ }
+ *tags = tags_per_config[channel_config];
+ memcpy(layout_map, aac_channel_layout_map[channel_config-1], *tags * sizeof(*layout_map));
+ return 0;
+}
+
+static ChannelElement *get_che(AACContext *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);
+
+ if (set_default_channel_config(ac->avctx, layout_map, &layout_map_tags,
+ 2) < 0)
+ return NULL;
+ if (output_configure(ac, layout_map, layout_map_tags,
+ 2, OC_TRIAL_FRAME) < 0)
+ return NULL;
+
+ ac->oc[1].m4ac.chan_config = 2;
+ }
+ // 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);
+
+ if (set_default_channel_config(ac->avctx, layout_map, &layout_map_tags,
+ 1) < 0)
+ return NULL;
+ if (output_configure(ac, layout_map, layout_map_tags,
+ 1, OC_TRIAL_FRAME) < 0)
+ return NULL;
+
+ ac->oc[1].m4ac.chan_config = 1;
+ }
+ // For indexed channel configurations map the channels solely based on position.
+ switch (ac->oc[1].m4ac.chan_config) {
+ 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 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 == tags_per_config[ac->oc[1].m4ac.chan_config] - 1 && (type == TYPE_LFE || type == TYPE_SCE)) {
+ 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:
+ 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->oc[1].m4ac.chan_config == 2) {
+ return NULL;
+ }
+ 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 cpe_map Stereo (Channel Pair Element) map, NULL if stereo bit is not present.
- * @param sce_map mono (Single Channel Element) map
* @param type speaker type/position for these channels
*/
static void decode_channel_map(uint8_t layout_map[][3],
return tags;
}
-/**
- * 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 av_cold int set_default_channel_config(AVCodecContext *avctx,
- uint8_t (*layout_map)[3],
- int *tags,
- int channel_config)
-{
- if (channel_config < 1 || channel_config > 7) {
- av_log(avctx, AV_LOG_ERROR, "invalid default channel configuration (%d)\n",
- channel_config);
- return -1;
- }
- *tags = tags_per_config[channel_config];
- memcpy(layout_map, aac_channel_layout_map[channel_config-1], *tags * sizeof(*layout_map));
- return 0;
-}
-
/**
* Decode GA "General Audio" specific configuration; reference: table 4.1.
*
float output_scale_factor;
ac->avctx = avctx;
- ac->m4ac.sample_rate = avctx->sample_rate;
+ ac->oc[1].m4ac.sample_rate = avctx->sample_rate;
if (avctx->extradata_size > 0) {
- if (decode_audio_specific_config(ac, ac->avctx, &ac->m4ac,
+ if (decode_audio_specific_config(ac, ac->avctx, &ac->oc[1].m4ac,
avctx->extradata,
avctx->extradata_size*8, 1) < 0)
return -1;
int layout_map_tags;
sr = sample_rate_idx(avctx->sample_rate);
- ac->m4ac.sampling_index = sr;
- ac->m4ac.channels = avctx->channels;
- ac->m4ac.sbr = -1;
- ac->m4ac.ps = -1;
+ ac->oc[1].m4ac.sampling_index = sr;
+ ac->oc[1].m4ac.channels = avctx->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->channels)
if (i == FF_ARRAY_ELEMS(ff_mpeg4audio_channels)) {
i = 0;
}
- ac->m4ac.chan_config = i;
+ ac->oc[1].m4ac.chan_config = i;
- if (ac->m4ac.chan_config) {
+ if (ac->oc[1].m4ac.chan_config) {
int ret = set_default_channel_config(avctx, layout_map,
- &layout_map_tags, ac->m4ac.chan_config);
+ &layout_map_tags, ac->oc[1].m4ac.chan_config);
if (!ret)
output_configure(ac, layout_map, layout_map_tags,
- ac->m4ac.chan_config, OC_GLOBAL_HDR);
+ ac->oc[1].m4ac.chan_config, OC_GLOBAL_HDR);
else if (avctx->err_recognition & AV_EF_EXPLODE)
return AVERROR_INVALIDDATA;
}
return -1;
}
}
- for (sfb = 0; sfb < FFMIN(ics->max_sfb, ff_aac_pred_sfb_max[ac->m4ac.sampling_index]); sfb++) {
+ 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;
}
}
ics->num_windows = 8;
- ics->swb_offset = ff_swb_offset_128[ac->m4ac.sampling_index];
- ics->num_swb = ff_aac_num_swb_128[ac->m4ac.sampling_index];
- ics->tns_max_bands = ff_tns_max_bands_128[ac->m4ac.sampling_index];
+ ics->swb_offset = ff_swb_offset_128[ac->oc[1].m4ac.sampling_index];
+ ics->num_swb = ff_aac_num_swb_128[ac->oc[1].m4ac.sampling_index];
+ ics->tns_max_bands = ff_tns_max_bands_128[ac->oc[1].m4ac.sampling_index];
ics->predictor_present = 0;
} else {
ics->max_sfb = get_bits(gb, 6);
ics->num_windows = 1;
- ics->swb_offset = ff_swb_offset_1024[ac->m4ac.sampling_index];
- ics->num_swb = ff_aac_num_swb_1024[ac->m4ac.sampling_index];
- ics->tns_max_bands = ff_tns_max_bands_1024[ac->m4ac.sampling_index];
+ ics->swb_offset = ff_swb_offset_1024[ac->oc[1].m4ac.sampling_index];
+ ics->num_swb = ff_aac_num_swb_1024[ac->oc[1].m4ac.sampling_index];
+ ics->tns_max_bands = ff_tns_max_bands_1024[ac->oc[1].m4ac.sampling_index];
ics->predictor_present = get_bits1(gb);
ics->predictor_reset_group = 0;
if (ics->predictor_present) {
- if (ac->m4ac.object_type == AOT_AAC_MAIN) {
+ if (ac->oc[1].m4ac.object_type == AOT_AAC_MAIN) {
if (decode_prediction(ac, ics, gb)) {
return AVERROR_INVALIDDATA;
}
- } else if (ac->m4ac.object_type == AOT_AAC_LC) {
+ } else if (ac->oc[1].m4ac.object_type == AOT_AAC_LC) {
av_log(ac->avctx, AV_LOG_ERROR, "Prediction is not allowed in AAC-LC.\n");
return AVERROR_INVALIDDATA;
} else {
av_log(ac->avctx, AV_LOG_ERROR, "invalid band type\n");
return -1;
}
- while ((sect_len_incr = get_bits(gb, bits)) == (1 << bits) - 1)
+ do {
+ sect_len_incr = get_bits(gb, bits);
sect_end += sect_len_incr;
- sect_end += sect_len_incr;
- if (get_bits_left(gb) < 0) {
- av_log(ac->avctx, AV_LOG_ERROR, overread_err);
- return -1;
- }
- 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 -1;
- }
+ if (get_bits_left(gb) < 0) {
+ av_log(ac->avctx, AV_LOG_ERROR, overread_err);
+ return -1;
+ }
+ 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 -1;
+ }
+ } 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;
int offset[3] = { global_gain, global_gain - 90, 0 };
int clipped_offset;
int noise_flag = 1;
- static const char *sf_str[3] = { "Global gain", "Noise gain", "Intensity stereo position" };
for (g = 0; g < ics->num_window_groups; g++) {
for (i = 0; i < ics->max_sfb;) {
int run_end = band_type_run_end[idx];
offset[0] += get_vlc2(gb, vlc_scalefactors.table, 7, 3) - 60;
if (offset[0] > 255U) {
av_log(ac->avctx, AV_LOG_ERROR,
- "%s (%d) out of range.\n", sf_str[0], offset[0]);
+ "Scalefactor (%d) out of range.\n", offset[0]);
return -1;
}
sf[idx] = -ff_aac_pow2sf_tab[offset[0] - 100 + POW_SF2_ZERO];
{
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->m4ac.object_type == AOT_AAC_MAIN ? 20 : 12;
+ 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);
}
if (sce->ics.window_sequence[0] != EIGHT_SHORT_SEQUENCE) {
- for (sfb = 0; sfb < ff_aac_pred_sfb_max[ac->m4ac.sampling_index]; sfb++) {
+ for (sfb = 0; sfb < ff_aac_pred_sfb_max[ac->oc[1].m4ac.sampling_index]; sfb++) {
for (k = sce->ics.swb_offset[sfb]; k < sce->ics.swb_offset[sfb + 1]; k++) {
predict(&sce->predictor_state[k], &sce->coeffs[k],
sce->ics.predictor_present && sce->ics.prediction_used[sfb]);
if (decode_spectrum_and_dequant(ac, out, gb, sce->sf, pulse_present, &pulse, ics, sce->band_type) < 0)
return -1;
- if (ac->m4ac.object_type == AOT_AAC_MAIN && !common_window)
+ if (ac->oc[1].m4ac.object_type == AOT_AAC_MAIN && !common_window)
apply_prediction(ac, sce);
return 0;
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->m4ac.object_type != AOT_AAC_MAIN))
+ 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 (common_window) {
if (ms_present)
apply_mid_side_stereo(ac, cpe);
- if (ac->m4ac.object_type == AOT_AAC_MAIN) {
+ if (ac->oc[1].m4ac.object_type == AOT_AAC_MAIN) {
apply_prediction(ac, &cpe->ch[0]);
apply_prediction(ac, &cpe->ch[1]);
}
if (!che) {
av_log(ac->avctx, AV_LOG_ERROR, "SBR was found before the first channel element.\n");
return res;
- } else if (!ac->m4ac.sbr) {
+ } 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->m4ac.sbr == -1 && ac->output_configured == OC_LOCKED) {
+ } 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->m4ac.ps == -1 && ac->output_configured < OC_LOCKED && ac->avctx->channels == 1) {
- ac->m4ac.sbr = 1;
- ac->m4ac.ps = 1;
- output_configure(ac, ac->layout_map, ac->layout_map_tags,
- ac->m4ac.chan_config, ac->output_configured);
+ } else if (ac->oc[1].m4ac.ps == -1 && ac->oc[1].status < OC_LOCKED && ac->avctx->channels == 1) {
+ ac->oc[1].m4ac.sbr = 1;
+ ac->oc[1].m4ac.ps = 1;
+ output_configure(ac, ac->oc[1].layout_map, ac->oc[1].layout_map_tags,
+ ac->oc[1].m4ac.chan_config, ac->oc[1].status);
} else {
- ac->m4ac.sbr = 1;
+ ac->oc[1].m4ac.sbr = 1;
}
res = ff_decode_sbr_extension(ac, &che->sbr, gb, crc_flag, cnt, elem_type);
break;
float *dest = target->coeffs;
const float *src = cce->ch[0].coeffs;
int g, i, group, k, idx = 0;
- if (ac->m4ac.object_type == AOT_AAC_LTP) {
+ if (ac->oc[1].m4ac.object_type == AOT_AAC_LTP) {
av_log(ac->avctx, AV_LOG_ERROR,
"Dependent coupling is not supported together with LTP\n");
return;
const float gain = cce->coup.gain[index][0];
const float *src = cce->ch[0].ret;
float *dest = target->ret;
- const int len = 1024 << (ac->m4ac.sbr == 1);
+ const int len = 1024 << (ac->oc[1].m4ac.sbr == 1);
for (i = 0; i < len; i++)
dest[i] += gain * src[i];
if (che) {
if (type <= TYPE_CPE)
apply_channel_coupling(ac, che, type, i, BEFORE_TNS, apply_dependent_coupling);
- if (ac->m4ac.object_type == AOT_AAC_LTP) {
+ if (ac->oc[1].m4ac.object_type == AOT_AAC_LTP) {
if (che->ch[0].ics.predictor_present) {
if (che->ch[0].ics.ltp.present)
apply_ltp(ac, &che->ch[0]);
apply_channel_coupling(ac, che, type, i, BETWEEN_TNS_AND_IMDCT, apply_dependent_coupling);
if (type != TYPE_CCE || che->coup.coupling_point == AFTER_IMDCT) {
imdct_and_windowing(ac, &che->ch[0]);
- if (ac->m4ac.object_type == AOT_AAC_LTP)
+ if (ac->oc[1].m4ac.object_type == AOT_AAC_LTP)
update_ltp(ac, &che->ch[0]);
if (type == TYPE_CPE) {
imdct_and_windowing(ac, &che->ch[1]);
- if (ac->m4ac.object_type == AOT_AAC_LTP)
+ if (ac->oc[1].m4ac.object_type == AOT_AAC_LTP)
update_ltp(ac, &che->ch[1]);
}
- if (ac->m4ac.sbr > 0) {
+ if (ac->oc[1].m4ac.sbr > 0) {
ff_sbr_apply(ac, &che->sbr, type, che->ch[0].ret, che->ch[1].ret);
}
}
size = avpriv_aac_parse_header(gb, &hdr_info);
if (size > 0) {
+ if (hdr_info.num_aac_frames != 1) {
+ av_log_missing_feature(ac->avctx, "More than one AAC RDB per ADTS frame is", 0);
+ return -1;
+ }
+ push_output_configuration(ac);
if (hdr_info.chan_config) {
- ac->m4ac.chan_config = hdr_info.chan_config;
+ ac->oc[1].m4ac.chan_config = hdr_info.chan_config;
if (set_default_channel_config(ac->avctx, layout_map,
&layout_map_tags, hdr_info.chan_config))
return -7;
if (output_configure(ac, layout_map, layout_map_tags,
hdr_info.chan_config,
- FFMAX(ac->output_configured, OC_TRIAL_FRAME)))
+ FFMAX(ac->oc[1].status, OC_TRIAL_FRAME)))
return -7;
- } else if (ac->output_configured != OC_LOCKED) {
- ac->m4ac.chan_config = 0;
- ac->output_configured = OC_NONE;
- }
- if (ac->output_configured != OC_LOCKED) {
- ac->m4ac.sbr = -1;
- ac->m4ac.ps = -1;
- ac->m4ac.sample_rate = hdr_info.sample_rate;
- ac->m4ac.sampling_index = hdr_info.sampling_index;
- ac->m4ac.object_type = hdr_info.object_type;
- }
- if (!ac->avctx->sample_rate)
- ac->avctx->sample_rate = hdr_info.sample_rate;
- if (hdr_info.num_aac_frames == 1) {
- if (!hdr_info.crc_absent)
- skip_bits(gb, 16);
} else {
- av_log_missing_feature(ac->avctx, "More than one AAC RDB per ADTS frame is", 0);
- return -1;
+ ac->oc[1].m4ac.chan_config = 0;
}
+ 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;
+ 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;
}
ChannelElement *che = NULL, *che_prev = NULL;
enum RawDataBlockType elem_type, elem_type_prev = TYPE_END;
int err, elem_id;
- int samples = 0, multiplier, audio_found = 0;
+ int samples = 0, multiplier, audio_found = 0, pce_found = 0;
if (show_bits(gb, 12) == 0xfff) {
if (parse_adts_frame_header(ac, gb) < 0) {
av_log(avctx, AV_LOG_ERROR, "Error decoding AAC frame header.\n");
- return -1;
+ err = -1;
+ goto fail;
}
- if (ac->m4ac.sampling_index > 12) {
- av_log(ac->avctx, AV_LOG_ERROR, "invalid sampling rate index %d\n", ac->m4ac.sampling_index);
- return -1;
+ 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 = -1;
+ goto fail;
}
}
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 -1;
+ err = -1;
+ goto fail;
}
samples = 1024;
}
case TYPE_PCE: {
uint8_t layout_map[MAX_ELEM_ID*4][3];
int tags;
- tags = decode_pce(avctx, &ac->m4ac, layout_map, gb);
+ push_output_configuration(ac);
+ tags = decode_pce(avctx, &ac->oc[1].m4ac, layout_map, gb);
if (tags < 0) {
err = tags;
break;
}
- if (ac->output_configured > OC_TRIAL_PCE)
+ if (pce_found) {
av_log(avctx, AV_LOG_ERROR,
"Not evaluating a further program_config_element as this construct is dubious at best.\n");
- else
+ pop_output_configuration(ac);
+ } else {
err = output_configure(ac, layout_map, tags, 0, OC_TRIAL_PCE);
+ pce_found = 1;
+ }
break;
}
elem_id += get_bits(gb, 8) - 1;
if (get_bits_left(gb) < 8 * elem_id) {
av_log(avctx, AV_LOG_ERROR, overread_err);
- return -1;
+ err = -1;
+ goto fail;
}
while (elem_id > 0)
elem_id -= decode_extension_payload(ac, gb, elem_id, che_prev, elem_type_prev);
elem_type_prev = elem_type;
if (err)
- return err;
+ goto fail;
if (get_bits_left(gb) < 3) {
av_log(avctx, AV_LOG_ERROR, overread_err);
- return -1;
+ err = -1;
+ goto fail;
}
}
spectral_to_sample(ac);
- multiplier = (ac->m4ac.sbr == 1) ? ac->m4ac.ext_sample_rate > ac->m4ac.sample_rate : 0;
+ multiplier = (ac->oc[1].m4ac.sbr == 1) ? ac->oc[1].m4ac.ext_sample_rate > ac->oc[1].m4ac.sample_rate : 0;
samples <<= multiplier;
- if (ac->output_configured < OC_LOCKED) {
- avctx->sample_rate = ac->m4ac.sample_rate << multiplier;
- avctx->frame_size = samples;
- }
if (samples) {
/* get output buffer */
ac->frame.nb_samples = samples;
if ((err = avctx->get_buffer(avctx, &ac->frame)) < 0) {
av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
- return err;
+ err = -1;
+ goto fail;
}
if (avctx->sample_fmt == AV_SAMPLE_FMT_FLT)
}
*got_frame_ptr = !!samples;
- if (ac->output_configured && audio_found)
- ac->output_configured = OC_LOCKED;
+ 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;
+ }
return 0;
+fail:
+ pop_output_configuration(ac);
+ return err;
}
static int aac_decode_frame(AVCodecContext *avctx, void *data,
return AVERROR(ENOMEM);
avctx->extradata_size = new_extradata_size;
memcpy(avctx->extradata, new_extradata, new_extradata_size);
- if (decode_audio_specific_config(ac, ac->avctx, &ac->m4ac,
+ push_output_configuration(ac);
+ if (decode_audio_specific_config(ac, ac->avctx, &ac->oc[1].m4ac,
avctx->extradata,
- avctx->extradata_size*8, 1) < 0)
+ avctx->extradata_size*8, 1) < 0) {
+ pop_output_configuration(ac);
return AVERROR_INVALIDDATA;
+ }
}
init_get_bits(&gb, buf, buf_size * 8);
{
AACContext *ac = &latmctx->aac_ctx;
AVCodecContext *avctx = ac->avctx;
- MPEG4AudioConfig m4ac = {0};
+ MPEG4AudioConfig m4ac = { 0 };
int config_start_bit = get_bits_count(gb);
int sync_extension = 0;
int bits_consumed, esize;
if (bits_consumed < 0)
return AVERROR_INVALIDDATA;
- if (ac->m4ac.sample_rate != m4ac.sample_rate ||
- ac->m4ac.chan_config != m4ac.chan_config) {
+ if (ac->oc[1].m4ac.sample_rate != m4ac.sample_rate ||
+ ac->oc[1].m4ac.chan_config != m4ac.chan_config) {
av_log(avctx, AV_LOG_INFO, "audio config changed\n");
latmctx->initialized = 0;
*got_frame_ptr = 0;
return avpkt->size;
} else {
+ push_output_configuration(&latmctx->aac_ctx);
if ((err = decode_audio_specific_config(
- &latmctx->aac_ctx, avctx, &latmctx->aac_ctx.m4ac,
- avctx->extradata, avctx->extradata_size*8, 1)) < 0)
+ &latmctx->aac_ctx, avctx, &latmctx->aac_ctx.oc[1].m4ac,
+ avctx->extradata, avctx->extradata_size*8, 1)) < 0) {
+ pop_output_configuration(&latmctx->aac_ctx);
return err;
+ }
latmctx->initialized = 1;
}
}
return muxlength;
}
-av_cold static int latm_decode_init(AVCodecContext *avctx)
+static av_cold int latm_decode_init(AVCodecContext *avctx)
{
struct LATMContext *latmctx = avctx->priv_data;
int ret = aac_decode_init(avctx);
AVCodec ff_aac_decoder = {
- .name = "aac",
- .type = AVMEDIA_TYPE_AUDIO,
- .id = CODEC_ID_AAC,
- .priv_data_size = sizeof(AACContext),
- .init = aac_decode_init,
- .close = aac_decode_close,
- .decode = aac_decode_frame,
- .long_name = NULL_IF_CONFIG_SMALL("Advanced Audio Coding"),
- .sample_fmts = (const enum AVSampleFormat[]) {
+ .name = "aac",
+ .type = AVMEDIA_TYPE_AUDIO,
+ .id = CODEC_ID_AAC,
+ .priv_data_size = sizeof(AACContext),
+ .init = aac_decode_init,
+ .close = aac_decode_close,
+ .decode = aac_decode_frame,
+ .long_name = NULL_IF_CONFIG_SMALL("Advanced Audio Coding"),
+ .sample_fmts = (const enum AVSampleFormat[]) {
AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_NONE
},
- .capabilities = CODEC_CAP_CHANNEL_CONF | CODEC_CAP_DR1,
+ .capabilities = CODEC_CAP_CHANNEL_CONF | CODEC_CAP_DR1,
.channel_layouts = aac_channel_layout,
};
To do a more complex LATM demuxing a separate LATM demuxer should be used.
*/
AVCodec ff_aac_latm_decoder = {
- .name = "aac_latm",
- .type = AVMEDIA_TYPE_AUDIO,
- .id = CODEC_ID_AAC_LATM,
- .priv_data_size = sizeof(struct LATMContext),
- .init = latm_decode_init,
- .close = aac_decode_close,
- .decode = latm_decode_frame,
- .long_name = NULL_IF_CONFIG_SMALL("AAC LATM (Advanced Audio Codec LATM syntax)"),
- .sample_fmts = (const enum AVSampleFormat[]) {
+ .name = "aac_latm",
+ .type = AVMEDIA_TYPE_AUDIO,
+ .id = CODEC_ID_AAC_LATM,
+ .priv_data_size = sizeof(struct LATMContext),
+ .init = latm_decode_init,
+ .close = aac_decode_close,
+ .decode = latm_decode_frame,
+ .long_name = NULL_IF_CONFIG_SMALL("AAC LATM (Advanced Audio Codec LATM syntax)"),
+ .sample_fmts = (const enum AVSampleFormat[]) {
AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_NONE
},
- .capabilities = CODEC_CAP_CHANNEL_CONF | CODEC_CAP_DR1,
+ .capabilities = CODEC_CAP_CHANNEL_CONF | CODEC_CAP_DR1,
.channel_layouts = aac_channel_layout,
};
projects / ffmpeg / blobdiff