static int ape_tag_read_field(AVFormatContext *s) { AVIOContext *pb = s->pb; uint8_t key[1024], *value; uint32_t size, flags; int i, c; size = avio_rl32(pb); /* field size */ flags = avio_rl32(pb); /* field flags */ for (i = 0; i < sizeof(key) - 1; i++) { c = avio_r8(pb); if (c < 0x20 || c > 0x7E) break; else key[i] = c; } key[i] = 0; if (c != 0) { av_log(s, AV_LOG_WARNING, "Invalid APE tag key '%s'.\n", key); return -1; } if (size >= UINT_MAX) return -1; if (flags & APE_TAG_FLAG_IS_BINARY) { uint8_t filename[1024]; AVStream *st = avformat_new_stream(s, NULL); if (!st) return AVERROR(ENOMEM); avio_get_str(pb, INT_MAX, filename, sizeof(filename)); st->codec->extradata = av_malloc(size + FF_INPUT_BUFFER_PADDING_SIZE); if (!st->codec->extradata) return AVERROR(ENOMEM); if (avio_read(pb, st->codec->extradata, size) != size) { av_freep(&st->codec->extradata); return AVERROR(EIO); } st->codec->extradata_size = size; av_dict_set(&st->metadata, key, filename, 0); st->codec->codec_type = AVMEDIA_TYPE_ATTACHMENT; } else { value = av_malloc(size+1); if (!value) return AVERROR(ENOMEM); c = avio_read(pb, value, size); if (c < 0) return c; value[c] = 0; av_dict_set(&s->metadata, key, value, AV_DICT_DONT_STRDUP_VAL); } return 0; }
static int ape_tag_read_field(AVFormatContext *s) { AVIOContext *pb = s->pb; uint8_t key[1024], *value; uint32_t size, flags; int i, c; size = avio_rl32(pb);   flags = avio_rl32(pb);   for (i = 0; i < sizeof(key) - 1; i++) { c = avio_r8(pb); if (c < 0x20 || c > 0x7E) break; else key[i] = c; } key[i] = 0; if (c != 0) { av_log(s, AV_LOG_WARNING, "Invalid APE tag key '%s'.\n", key); return -1; } if (size >= UINT_MAX) return -1; if (flags & APE_TAG_FLAG_IS_BINARY) { uint8_t filename[1024]; AVStream *st = avformat_new_stream(s, NULL); if (!st) return AVERROR(ENOMEM); avio_get_str(pb, INT_MAX, filename, sizeof(filename)); st->codec->extradata = av_malloc(size + FF_INPUT_BUFFER_PADDING_SIZE); if (!st->codec->extradata) return AVERROR(ENOMEM); if (avio_read(pb, st->codec->extradata, size) != size) { av_freep(&st->codec->extradata); return AVERROR(EIO); } st->codec->extradata_size = size; av_dict_set(&st->metadata, key, filename, 0); st->codec->codec_type = AVMEDIA_TYPE_ATTACHMENT; } else { value = av_malloc(size+1); if (!value) return AVERROR(ENOMEM); c = avio_read(pb, value, size); if (c < 0) return c; value[c] = 0; av_dict_set(&s->metadata, key, value, AV_DICT_DONT_STRDUP_VAL); } return 0; }