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修复av3a格式解封装在特殊序列上的错误。

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Signed-off-by: liushuai <cqliushuai@outlook.com>
This commit is contained in:
liushuai 2024-11-20 19:21:26 +08:00
parent 67e35e6186
commit a49d060edc
4 changed files with 25 additions and 14 deletions
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1
libavcodec/av3a.h
View File

@ -35,6 +35,7 @@
#define AV3A_FS_TABLE_SIZE 9
#define AV3A_RESOLUTION_TABLE_SIZE 3
#define AV3A_DCA3_BOX_MIN_SIZE 5
#define AV3A_DCA3_BOX_MAX_SIZE 7
/* Channel Layout */
#define AV3A_CH_LAYOUT_MONO (AV_CH_LAYOUT_MONO)

13
libavcodec/av3a_parser.c
View File

@ -42,7 +42,7 @@ typedef struct {
int16_t total_channels;
} Av3aParseContext;
static int ff_read_av3a_header_parse(GetBitContext *gb, AATFHeaderInfo *hdf)
static int ff_av3a_header_parse(GetBitContext *gb, AATFHeaderInfo *hdf)
{
int64_t soundbed_bitrate = 0L;
int64_t object_bitrate = 0L;
@ -181,19 +181,22 @@ static int ff_read_av3a_header_parse(GetBitContext *gb, AATFHeaderInfo *hdf)
static int raw_av3a_parse(AVCodecParserContext *s, AVCodecContext *avctx, const uint8_t **poutbuf,
int32_t *poutbuf_size, const uint8_t *buf, int32_t buf_size)
{
int ret = 0;
uint8_t header[AV3A_MAX_NBYTES_HEADER];
AATFHeaderInfo hdf;
GetBitContext gb;
if (buf_size < AV3A_MAX_NBYTES_HEADER) {
if ((!buf) || (buf_size < AV3A_MAX_NBYTES_HEADER)) {
*poutbuf = NULL;
*poutbuf_size = 0;
return buf_size;
}
memcpy(header, buf, AV3A_MAX_NBYTES_HEADER);
init_get_bits8(&gb, buf, AV3A_MAX_NBYTES_HEADER);
if ((ret = ff_read_av3a_header_parse(&gb, &hdf)) != 0) {
return ret;
if (ff_av3a_header_parse(&gb, &hdf) < 0) {
*poutbuf = NULL;
*poutbuf_size = 0;
return buf_size;
}
avctx->codec_id = AV_CODEC_ID_AVS3DA;

2
libavformat/av3adec.c
View File

@ -195,7 +195,7 @@ static int av3a_get_packet_size(AVFormatContext *s)
uint16_t sync_word = 0;
int payload_bytes = 0;
int payloud_bits = 0;
uint8_t header[AV3A_MAX_NBYTES_HEADER];
uint8_t header[AV3A_MAX_NBYTES_HEADER + AV_INPUT_BUFFER_PADDING_SIZE];
GetBitContext gb;
int32_t sampling_rate;
int16_t coding_profile, sampling_frequency_index, channel_number_index;

17
libavformat/mov.c
View File

@ -7930,26 +7930,30 @@ static int mov_read_dca3(MOVContext *c, AVIOContext *pb, MOVAtom atom)
int i = 0;
int nb_channels = 0;
int nb_objects = 0;
int buff_size = 0;
AVStream *st = NULL;
GetBitContext gb;
uint8_t buffer[7];
uint8_t buffer[AV3A_DCA3_BOX_MAX_SIZE + AV_INPUT_BUFFER_PADDING_SIZE];
int audio_codec_id, sampling_frequency_index;
int nn_type, content_type, channel_number_index, number_objects;
int hoa_order, resolution_index, reserved;
int bitrate_kbps;
if (atom.size < AV3A_DCA3_BOX_MIN_SIZE) {
if ((atom.size < AV3A_DCA3_BOX_MIN_SIZE) || (atom.size > AV3A_DCA3_BOX_MAX_SIZE)) {
return AVERROR_INVALIDDATA;
}
buff_size = (int)(atom.size);
init_get_bits8(&gb, buffer, sizeof(buffer));
if ((ret = init_get_bits8(&gb, buffer, sizeof(buffer))) < 0) {
return ret;
}
if (c->fc->nb_streams < 1) {
return 0;
}
st = c->fc->streams[c->fc->nb_streams - 1];
if ((ret = avio_read(pb, buffer, sizeof(buffer))) < 0) {
if ((ret = avio_read(pb, buffer, buff_size)) < 0) {
return ret;
}
@ -8016,7 +8020,10 @@ static int mov_read_dca3(MOVContext *c, AVIOContext *pb, MOVAtom atom)
}
bitrate_kbps = get_bits(&gb, 16);
st->codecpar->bit_rate = bitrate_kbps * 1000;
if (bitrate_kbps <= 0) {
return AVERROR_INVALIDDATA;
}
st->codecpar->bit_rate = (int64_t)(bitrate_kbps * 1000);
resolution_index = get_bits(&gb, 2);
if ((resolution_index >= AV3A_RESOLUTION_TABLE_SIZE) || (resolution_index < 0)) {