static int aa_read_header(AVFormatContext *s)
{
int i, j, idx, largest_idx = -1;
- uint32_t nkey, nval, toc_size, npairs, header_seed, start;
+ uint32_t nkey, nval, toc_size, npairs, header_seed = 0, start;
char key[128], val[128], codec_name[64] = {0};
uint8_t output[24], dst[8], src[8];
int64_t largest_size = -1, current_size = -1;
uint32_t size;
} TOC[MAX_TOC_ENTRIES];
uint32_t header_key_part[4];
- uint8_t header_key[16];
+ uint8_t header_key[16] = {0};
AADemuxContext *c = s->priv_data;
AVIOContext *pb = s->pb;
AVStream *st;
avio_read(pb, val, nval); // value string
}
if (!strcmp(key, "codec")) {
+ av_log(s, AV_LOG_DEBUG, "Codec is <%s>\n", val);
strncpy(codec_name, val, sizeof(codec_name) - 1);
}
if (!strcmp(key, "HeaderSeed")) {
+ av_log(s, AV_LOG_DEBUG, "HeaderSeed is <%s>\n", val);
header_seed = atoi(val);
}
if (!strcmp(key, "HeaderKey")) { // this looks like "1234567890 1234567890 1234567890 1234567890"
- sscanf(val, "%d%d%d%d", &header_key_part[0], &header_key_part[1], &header_key_part[2], &header_key_part[3]);
+ av_log(s, AV_LOG_DEBUG, "HeaderKey is <%s>\n", val);
+ sscanf(val, "%u%u%u%u", &header_key_part[0], &header_key_part[1], &header_key_part[2], &header_key_part[3]);
for (idx = 0; idx < 4; idx++) {
AV_WB32(&header_key[idx * 4], header_key_part[idx]); // convert each part to BE!
}
+ av_log(s, AV_LOG_DEBUG, "Processed HeaderKey is ");
+ for (i = 0; i < 16; i++)
+ av_log(s, AV_LOG_DEBUG, "%02x", header_key[i]);
+ av_log(s, AV_LOG_DEBUG, "\n");
}
}
return AVERROR(ENOMEM);
av_tea_init(c->tea_ctx, c->aa_fixed_key, 16);
output[0] = output[1] = 0; // purely for padding purposes
- memcpy(output + 2, &header_key, 16);
+ memcpy(output + 2, header_key, 16);
idx = 0;
for (i = 0; i < 3; i++) { // TEA CBC with weird mixed endianness
AV_WB32(src, header_seed);
}
}
memcpy(c->file_key, output + 2, 16); // skip first 2 bytes of output
+ av_log(s, AV_LOG_DEBUG, "File key is ");
+ for (i = 0; i < 16; i++)
+ av_log(s, AV_LOG_DEBUG, "%02x", c->file_key[i]);
+ av_log(s, AV_LOG_DEBUG, "\n");
/* decoder setup */
st = avformat_new_stream(s, NULL);