* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
+#include <inttypes.h>
+
#include "libavutil/intreadwrite.h"
#include "libavutil/dict.h"
#include "avformat.h"
+#include "avio_internal.h"
#include "apetag.h"
+#include "internal.h"
#define APE_TAG_VERSION 2000
#define APE_TAG_FOOTER_BYTES 32
#define APE_TAG_FLAG_CONTAINS_HEADER (1 << 31)
+#define APE_TAG_FLAG_CONTAINS_FOOTER (1 << 30)
#define APE_TAG_FLAG_IS_HEADER (1 << 29)
#define APE_TAG_FLAG_IS_BINARY (1 << 1)
{
AVIOContext *pb = s->pb;
uint8_t key[1024], *value;
- uint32_t size, flags;
+ int64_t size, flags;
int i, c;
size = avio_rl32(pb); /* field size */
av_log(s, AV_LOG_WARNING, "Invalid APE tag key '%s'.\n", key);
return -1;
}
- if (size >= UINT_MAX)
- return -1;
+ if (size > INT32_MAX - AV_INPUT_BUFFER_PADDING_SIZE) {
+ av_log(s, AV_LOG_ERROR, "APE tag size too large.\n");
+ return AVERROR_INVALIDDATA;
+ }
if (flags & APE_TAG_FLAG_IS_BINARY) {
uint8_t filename[1024];
+ enum AVCodecID id;
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);
+
+ size -= avio_get_str(pb, size, filename, sizeof(filename));
+ if (size <= 0) {
+ av_log(s, AV_LOG_WARNING, "Skipping binary tag '%s'.\n", key);
+ return 0;
}
- st->codec->extradata_size = size;
+
av_dict_set(&st->metadata, key, filename, 0);
- st->codec->codec_type = AVMEDIA_TYPE_ATTACHMENT;
+
+ if ((id = ff_guess_image2_codec(filename)) != AV_CODEC_ID_NONE) {
+ AVPacket pkt;
+ int ret;
+
+ ret = av_get_packet(s->pb, &pkt, size);
+ if (ret < 0) {
+ av_log(s, AV_LOG_ERROR, "Error reading cover art.\n");
+ return ret;
+ }
+
+ st->disposition |= AV_DISPOSITION_ATTACHED_PIC;
+ st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
+ st->codec->codec_id = id;
+
+ st->attached_pic = pkt;
+ st->attached_pic.stream_index = st->index;
+ st->attached_pic.flags |= AV_PKT_FLAG_KEY;
+ } else {
+ st->codec->extradata = av_malloc(size + AV_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;
+ 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)
+ if (c < 0) {
+ av_free(value);
return c;
+ }
value[c] = 0;
av_dict_set(&s->metadata, key, value, AV_DICT_DONT_STRDUP_VAL);
}
return 0;
}
-void ff_ape_parse_tag(AVFormatContext *s)
+int64_t ff_ape_parse_tag(AVFormatContext *s)
{
AVIOContext *pb = s->pb;
- int file_size = avio_size(pb);
+ int64_t file_size = avio_size(pb);
uint32_t val, fields, tag_bytes;
uint8_t buf[8];
+ int64_t tag_start;
int i;
if (file_size < APE_TAG_FOOTER_BYTES)
- return;
+ return 0;
avio_seek(pb, file_size - APE_TAG_FOOTER_BYTES, SEEK_SET);
avio_read(pb, buf, 8); /* APETAGEX */
if (strncmp(buf, "APETAGEX", 8)) {
- return;
+ return 0;
}
val = avio_rl32(pb); /* APE tag version */
if (val > APE_TAG_VERSION) {
av_log(s, AV_LOG_ERROR, "Unsupported tag version. (>=%d)\n", APE_TAG_VERSION);
- return;
+ return 0;
}
tag_bytes = avio_rl32(pb); /* tag size */
if (tag_bytes - APE_TAG_FOOTER_BYTES > (1024 * 1024 * 16)) {
av_log(s, AV_LOG_ERROR, "Tag size is way too big\n");
- return;
+ return 0;
}
+ if (tag_bytes > file_size - APE_TAG_FOOTER_BYTES) {
+ av_log(s, AV_LOG_ERROR, "Invalid tag size %"PRIu32".\n", tag_bytes);
+ return 0;
+ }
+ tag_start = file_size - tag_bytes - APE_TAG_FOOTER_BYTES;
+
fields = avio_rl32(pb); /* number of fields */
if (fields > 65536) {
- av_log(s, AV_LOG_ERROR, "Too many tag fields (%d)\n", fields);
- return;
+ av_log(s, AV_LOG_ERROR, "Too many tag fields (%"PRIu32")\n", fields);
+ return 0;
}
val = avio_rl32(pb); /* flags */
if (val & APE_TAG_FLAG_IS_HEADER) {
av_log(s, AV_LOG_ERROR, "APE Tag is a header\n");
- return;
+ return 0;
}
avio_seek(pb, file_size - tag_bytes, SEEK_SET);
for (i=0; i<fields; i++)
if (ape_tag_read_field(s) < 0) break;
+
+ return tag_start;
+}
+
+int ff_ape_write_tag(AVFormatContext *s)
+{
+ AVDictionaryEntry *e = NULL;
+ int64_t start, end;
+ int size, count = 0;
+
+ if (!s->pb->seekable)
+ return 0;
+
+ start = avio_tell(s->pb);
+
+ // header
+ avio_write(s->pb, "APETAGEX", 8); // id
+ avio_wl32 (s->pb, APE_TAG_VERSION); // version
+ avio_wl32(s->pb, 0); // reserve space for size
+ avio_wl32(s->pb, 0); // reserve space for tag count
+
+ // flags
+ avio_wl32(s->pb, APE_TAG_FLAG_CONTAINS_HEADER | APE_TAG_FLAG_CONTAINS_FOOTER |
+ APE_TAG_FLAG_IS_HEADER);
+ ffio_fill(s->pb, 0, 8); // reserved
+
+ while ((e = av_dict_get(s->metadata, "", e, AV_DICT_IGNORE_SUFFIX))) {
+ int val_len = strlen(e->value);
+
+ avio_wl32(s->pb, val_len); // value length
+ avio_wl32(s->pb, 0); // item flags
+ avio_put_str(s->pb, e->key); // key
+ avio_write(s->pb, e->value, val_len); // value
+ count++;
+ }
+
+ size = avio_tell(s->pb) - start;
+
+ // footer
+ avio_write(s->pb, "APETAGEX", 8); // id
+ avio_wl32 (s->pb, APE_TAG_VERSION); // version
+ avio_wl32(s->pb, size); // size
+ avio_wl32(s->pb, count); // tag count
+
+ // flags
+ avio_wl32(s->pb, APE_TAG_FLAG_CONTAINS_HEADER | APE_TAG_FLAG_CONTAINS_FOOTER);
+ ffio_fill(s->pb, 0, 8); // reserved
+
+ // update values in the header
+ end = avio_tell(s->pb);
+ avio_seek(s->pb, start + 12, SEEK_SET);
+ avio_wl32(s->pb, size);
+ avio_wl32(s->pb, count);
+ avio_seek(s->pb, end, SEEK_SET);
+
+ return 0;
}
projects / ffmpeg / blobdiff