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Diffstat (limited to 'libavcodec/aacdec.c')
-rw-r--r--libavcodec/aacdec.c41
1 files changed, 26 insertions, 15 deletions
diff --git a/libavcodec/aacdec.c b/libavcodec/aacdec.c
index 071e05349d..7a871c4022 100644
--- a/libavcodec/aacdec.c
+++ b/libavcodec/aacdec.c
@@ -114,6 +114,10 @@
static VLC vlc_scalefactors;
static VLC vlc_spectral[11];
+static int output_configure(AACContext *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)
@@ -403,12 +407,11 @@ static void push_output_configuration(AACContext *ac) {
* configuration is unlocked.
*/
static void pop_output_configuration(AACContext *ac) {
- return;
if (ac->oc[1].status != OC_LOCKED && ac->oc[0].status != OC_NONE) {
ac->oc[1] = ac->oc[0];
ac->avctx->channels = ac->oc[1].channels;
ac->avctx->channel_layout = ac->oc[1].channel_layout;
- ff_aac_output_configure(ac, ac->oc[1].layout_map, ac->oc[1].layout_map_tags,
+ output_configure(ac, ac->oc[1].layout_map, ac->oc[1].layout_map_tags,
ac->oc[1].status, 0);
}
}
@@ -418,7 +421,7 @@ static void pop_output_configuration(AACContext *ac) {
*
* @return Returns error status. 0 - OK, !0 - error
*/
-int ff_aac_output_configure(AACContext *ac,
+static int output_configure(AACContext *ac,
uint8_t layout_map[MAX_ELEM_ID*4][3], int tags,
enum OCStatus oc_type, int get_new_frame)
{
@@ -522,7 +525,7 @@ static ChannelElement *get_che(AACContext *ac, int type, int elem_id)
if (set_default_channel_config(ac->avctx, layout_map, &layout_map_tags,
2) < 0)
return NULL;
- if (ff_aac_output_configure(ac, layout_map, layout_map_tags,
+ if (output_configure(ac, layout_map, layout_map_tags,
OC_TRIAL_FRAME, 1) < 0)
return NULL;
@@ -540,7 +543,7 @@ static ChannelElement *get_che(AACContext *ac, int type, int elem_id)
if (set_default_channel_config(ac->avctx, layout_map, &layout_map_tags,
1) < 0)
return NULL;
- if (ff_aac_output_configure(ac, layout_map, layout_map_tags,
+ if (output_configure(ac, layout_map, layout_map_tags,
OC_TRIAL_FRAME, 1) < 0)
return NULL;
@@ -734,7 +737,7 @@ static int decode_ga_specific_config(AACContext *ac, AVCodecContext *avctx,
} else if (m4ac->sbr == 1 && m4ac->ps == -1)
m4ac->ps = 1;
- if (ac && (ret = ff_aac_output_configure(ac, layout_map, tags, OC_GLOBAL_HDR, 0)))
+ if (ac && (ret = output_configure(ac, layout_map, tags, OC_GLOBAL_HDR, 0)))
return ret;
if (extension_flag) {
@@ -917,7 +920,7 @@ static av_cold int aac_decode_init(AVCodecContext *avctx)
int ret = set_default_channel_config(avctx, layout_map,
&layout_map_tags, ac->oc[1].m4ac.chan_config);
if (!ret)
- ff_aac_output_configure(ac, layout_map, layout_map_tags,
+ output_configure(ac, layout_map, layout_map_tags,
OC_GLOBAL_HDR, 0);
else if (avctx->err_recognition & AV_EF_EXPLODE)
return AVERROR_INVALIDDATA;
@@ -2032,13 +2035,21 @@ static int decode_extension_payload(AACContext *ac, GetBitContext *gb, int cnt,
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.sbr != 1) {
- av_log(ac->avctx, AV_LOG_DEBUG, "SBR was found in the bitstream.\n");
+ } 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->channels == 1) {
ac->oc[1].m4ac.sbr = 1;
- if (ac->oc[1].m4ac.ps == -1 && ac->avctx->channels == 1)
- ac->oc[1].m4ac.ps = 1;
- ff_aac_output_configure(ac, ac->oc[1].layout_map, ac->oc[1].layout_map_tags,
+ ac->oc[1].m4ac.ps = 1;
+ 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;
}
res = ff_decode_sbr_extension(ac, &che->sbr, gb, crc_flag, cnt, elem_type);
break;
@@ -2429,7 +2440,7 @@ static int parse_adts_frame_header(AACContext *ac, GetBitContext *gb)
if (set_default_channel_config(ac->avctx, layout_map,
&layout_map_tags, hdr_info.chan_config))
return -7;
- if (ff_aac_output_configure(ac, layout_map, layout_map_tags,
+ if (output_configure(ac, layout_map, layout_map_tags,
FFMAX(ac->oc[1].status, OC_TRIAL_FRAME), 0))
return -7;
} else {
@@ -2445,7 +2456,7 @@ static int parse_adts_frame_header(AACContext *ac, GetBitContext *gb)
layout_map[0][2] = layout_map[1][2] = AAC_CHANNEL_FRONT;
layout_map[0][1] = 0;
layout_map[1][1] = 1;
- if (ff_aac_output_configure(ac, layout_map, layout_map_tags,
+ if (output_configure(ac, layout_map, layout_map_tags,
OC_TRIAL_FRAME, 0))
return -7;
}
@@ -2549,7 +2560,7 @@ static int aac_decode_frame_int(AVCodecContext *avctx, void *data,
av_log(avctx, AV_LOG_ERROR,
"Not evaluating a further program_config_element as this construct is dubious at best.\n");
} else {
- err = ff_aac_output_configure(ac, layout_map, tags, OC_TRIAL_PCE, 1);
+ err = output_configure(ac, layout_map, tags, OC_TRIAL_PCE, 1);
if (!err)
ac->oc[1].m4ac.chan_config = 0;
pce_found = 1;
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-28 03:28:40 +0000