#include "libavutil/intreadwrite.h"
#include "avformat.h"
+#include "apetag.h"
#define ENABLE_DEBUG 0
#define APE_EXTRADATA_SIZE 6
-/* APE tags */
-#define APE_TAG_VERSION 2000
-#define APE_TAG_FOOTER_BYTES 32
-#define APE_TAG_FLAG_CONTAINS_HEADER (1 << 31)
-#define APE_TAG_FLAG_IS_HEADER (1 << 29)
-
-#define TAG(name, field) {name, offsetof(AVFormatContext, field), sizeof(((AVFormatContext *)0)->field)}
-
-static const struct {
- const char *name;
- int offset;
- int size;
-} tags[] = {
- TAG("Title" , title ),
- TAG("Artist" , author ),
- TAG("Copyright", copyright),
- TAG("Comment" , comment ),
- TAG("Album" , album ),
- TAG("Year" , year ),
- TAG("Track" , track ),
- TAG("Genre" , genre ),
- { NULL }
-};
-
typedef struct {
int64_t pos;
int nblocks;
uint32_t *seektable;
} APEContext;
-static void ape_tag_read_field(AVFormatContext *s)
-{
- ByteIOContext *pb = s->pb;
- uint8_t buf[1024];
- uint32_t size;
- int i;
-
- memset(buf, 0, 1024);
- size = get_le32(pb); /* field size */
- url_fskip(pb, 4); /* skip field flags */
-
- for (i=0; pb->buf_ptr[i]!='0' && pb->buf_ptr[i]>=0x20 && pb->buf_ptr[i]<=0x7E; i++);
-
- get_buffer(pb, buf, FFMIN(i, 1024));
- url_fskip(pb, 1);
-
- for (i=0; tags[i].name; i++)
- if (!strcmp (buf, tags[i].name)) {
- if (tags[i].size == sizeof(int)) {
- char tmp[16];
- get_buffer(pb, tmp, FFMIN(sizeof(tmp), size));
- *(int *)(((char *)s)+tags[i].offset) = atoi(tmp);
- } else {
- get_buffer(pb, ((char *)s) + tags[i].offset,
- FFMIN(tags[i].size, size));
- }
- break;
- }
-
- if (!tags[i].name)
- url_fskip(pb, size);
-}
-
-static void ape_parse_tag(AVFormatContext *s)
-{
- ByteIOContext *pb = s->pb;
- int file_size = url_fsize(pb);
- uint32_t val, fields, tag_bytes;
- uint8_t buf[8];
- int i;
-
- if (file_size < APE_TAG_FOOTER_BYTES)
- return;
-
- url_fseek(pb, file_size - APE_TAG_FOOTER_BYTES, SEEK_SET);
-
- get_buffer(pb, buf, 8); /* APETAGEX */
- if (strncmp(buf, "APETAGEX", 8)) {
- return;
- }
-
- val = get_le32(pb); /* APE tag version */
- if (val > APE_TAG_VERSION) {
- av_log(s, AV_LOG_ERROR, "Unsupported tag version. (>=%d)\n", APE_TAG_VERSION);
- return;
- }
-
- tag_bytes = get_le32(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;
- }
-
- fields = get_le32(pb); /* number of fields */
- if (fields > 65536) {
- av_log(s, AV_LOG_ERROR, "Too many tag fields (%d)\n", fields);
- return;
- }
-
- val = get_le32(pb); /* flags */
- if (val & APE_TAG_FLAG_IS_HEADER) {
- av_log(s, AV_LOG_ERROR, "APE Tag is a header\n");
- return;
- }
-
- if (val & APE_TAG_FLAG_CONTAINS_HEADER)
- tag_bytes += 2*APE_TAG_FOOTER_BYTES;
-
- url_fseek(pb, file_size - tag_bytes, SEEK_SET);
-
- for (i=0; i<fields; i++)
- ape_tag_read_field(s);
-
-#if ENABLE_DEBUG
- av_log(s, AV_LOG_DEBUG, "\nAPE Tags:\n\n");
- av_log(s, AV_LOG_DEBUG, "title = %s\n", s->title);
- av_log(s, AV_LOG_DEBUG, "author = %s\n", s->author);
- av_log(s, AV_LOG_DEBUG, "copyright = %s\n", s->copyright);
- av_log(s, AV_LOG_DEBUG, "comment = %s\n", s->comment);
- av_log(s, AV_LOG_DEBUG, "album = %s\n", s->album);
- av_log(s, AV_LOG_DEBUG, "year = %d\n", s->year);
- av_log(s, AV_LOG_DEBUG, "track = %d\n", s->track);
- av_log(s, AV_LOG_DEBUG, "genre = %s\n", s->genre);
-#endif
-}
-
static int ape_probe(AVProbeData * p)
{
if (p->buf[0] == 'M' && p->buf[1] == 'A' && p->buf[2] == 'C' && p->buf[3] == ' ')
static int ape_read_header(AVFormatContext * s, AVFormatParameters * ap)
{
- ByteIOContext *pb = s->pb;
+ AVIOContext *pb = s->pb;
APEContext *ape = s->priv_data;
AVStream *st;
uint32_t tag;
int total_blocks;
int64_t pts;
- /* TODO: Skip any leading junk such as id3v2 tags */
- ape->junklength = 0;
+ /* Skip any leading junk such as id3v2 tags */
+ ape->junklength = avio_tell(pb);
- tag = get_le32(pb);
+ tag = avio_rl32(pb);
if (tag != MKTAG('M', 'A', 'C', ' '))
return -1;
- ape->fileversion = get_le16(pb);
+ ape->fileversion = avio_rl16(pb);
if (ape->fileversion < APE_MIN_VERSION || ape->fileversion > APE_MAX_VERSION) {
av_log(s, AV_LOG_ERROR, "Unsupported file version - %d.%02d\n", ape->fileversion / 1000, (ape->fileversion % 1000) / 10);
}
if (ape->fileversion >= 3980) {
- ape->padding1 = get_le16(pb);
- ape->descriptorlength = get_le32(pb);
- ape->headerlength = get_le32(pb);
- ape->seektablelength = get_le32(pb);
- ape->wavheaderlength = get_le32(pb);
- ape->audiodatalength = get_le32(pb);
- ape->audiodatalength_high = get_le32(pb);
- ape->wavtaillength = get_le32(pb);
- get_buffer(pb, ape->md5, 16);
+ ape->padding1 = avio_rl16(pb);
+ ape->descriptorlength = avio_rl32(pb);
+ ape->headerlength = avio_rl32(pb);
+ ape->seektablelength = avio_rl32(pb);
+ ape->wavheaderlength = avio_rl32(pb);
+ ape->audiodatalength = avio_rl32(pb);
+ ape->audiodatalength_high = avio_rl32(pb);
+ ape->wavtaillength = avio_rl32(pb);
+ avio_read(pb, ape->md5, 16);
/* Skip any unknown bytes at the end of the descriptor.
This is for future compatibility */
if (ape->descriptorlength > 52)
- url_fseek(pb, ape->descriptorlength - 52, SEEK_CUR);
+ avio_skip(pb, ape->descriptorlength - 52);
/* Read header data */
- ape->compressiontype = get_le16(pb);
- ape->formatflags = get_le16(pb);
- ape->blocksperframe = get_le32(pb);
- ape->finalframeblocks = get_le32(pb);
- ape->totalframes = get_le32(pb);
- ape->bps = get_le16(pb);
- ape->channels = get_le16(pb);
- ape->samplerate = get_le32(pb);
+ ape->compressiontype = avio_rl16(pb);
+ ape->formatflags = avio_rl16(pb);
+ ape->blocksperframe = avio_rl32(pb);
+ ape->finalframeblocks = avio_rl32(pb);
+ ape->totalframes = avio_rl32(pb);
+ ape->bps = avio_rl16(pb);
+ ape->channels = avio_rl16(pb);
+ ape->samplerate = avio_rl32(pb);
} else {
ape->descriptorlength = 0;
ape->headerlength = 32;
- ape->compressiontype = get_le16(pb);
- ape->formatflags = get_le16(pb);
- ape->channels = get_le16(pb);
- ape->samplerate = get_le32(pb);
- ape->wavheaderlength = get_le32(pb);
- ape->wavtaillength = get_le32(pb);
- ape->totalframes = get_le32(pb);
- ape->finalframeblocks = get_le32(pb);
+ ape->compressiontype = avio_rl16(pb);
+ ape->formatflags = avio_rl16(pb);
+ ape->channels = avio_rl16(pb);
+ ape->samplerate = avio_rl32(pb);
+ ape->wavheaderlength = avio_rl32(pb);
+ ape->wavtaillength = avio_rl32(pb);
+ ape->totalframes = avio_rl32(pb);
+ ape->finalframeblocks = avio_rl32(pb);
if (ape->formatflags & MAC_FORMAT_FLAG_HAS_PEAK_LEVEL) {
- url_fseek(pb, 4, SEEK_CUR); /* Skip the peak level */
+ avio_skip(pb, 4); /* Skip the peak level */
ape->headerlength += 4;
}
if (ape->formatflags & MAC_FORMAT_FLAG_HAS_SEEK_ELEMENTS) {
- ape->seektablelength = get_le32(pb);
+ ape->seektablelength = avio_rl32(pb);
ape->headerlength += 4;
ape->seektablelength *= sizeof(int32_t);
} else
/* Skip any stored wav header */
if (!(ape->formatflags & MAC_FORMAT_FLAG_CREATE_WAV_HEADER))
- url_fskip(pb, ape->wavheaderlength);
+ avio_skip(pb, ape->wavheaderlength);
}
+ if(!ape->totalframes){
+ av_log(s, AV_LOG_ERROR, "No frames in the file!\n");
+ return AVERROR(EINVAL);
+ }
if(ape->totalframes > UINT_MAX / sizeof(APEFrame)){
av_log(s, AV_LOG_ERROR, "Too many frames: %d\n", ape->totalframes);
return -1;
}
+ if (ape->seektablelength && (ape->seektablelength / sizeof(*ape->seektable)) < ape->totalframes) {
+ av_log(s, AV_LOG_ERROR, "Number of seek entries is less than number of frames: %d vs. %d\n",
+ ape->seektablelength / sizeof(*ape->seektable), ape->totalframes);
+ return AVERROR_INVALIDDATA;
+ }
ape->frames = av_malloc(ape->totalframes * sizeof(APEFrame));
if(!ape->frames)
- return AVERROR_NOMEM;
+ return AVERROR(ENOMEM);
ape->firstframe = ape->junklength + ape->descriptorlength + ape->headerlength + ape->seektablelength + ape->wavheaderlength;
ape->currentframe = 0;
if (ape->seektablelength > 0) {
ape->seektable = av_malloc(ape->seektablelength);
for (i = 0; i < ape->seektablelength / sizeof(uint32_t); i++)
- ape->seektable[i] = get_le32(pb);
+ ape->seektable[i] = avio_rl32(pb);
}
ape->frames[0].pos = ape->firstframe;
ape->frames[0].nblocks = ape->blocksperframe;
ape->frames[0].skip = 0;
for (i = 1; i < ape->totalframes; i++) {
- ape->frames[i].pos = ape->seektable[i]; //ape->frames[i-1].pos + ape->blocksperframe;
+ ape->frames[i].pos = ape->seektable[i] + ape->junklength; //ape->frames[i-1].pos + ape->blocksperframe;
ape->frames[i].nblocks = ape->blocksperframe;
ape->frames[i - 1].size = ape->frames[i].pos - ape->frames[i - 1].pos;
ape->frames[i].skip = (ape->frames[i].pos - ape->frames[0].pos) & 3;
ape_dumpinfo(s, ape);
/* try to read APE tags */
- if (!url_is_streamed(pb)) {
- ape_parse_tag(s);
- url_fseek(pb, 0, SEEK_SET);
+ if (pb->seekable) {
+ ff_ape_parse_tag(s);
+ avio_seek(pb, 0, SEEK_SET);
}
av_log(s, AV_LOG_DEBUG, "Decoding file - v%d.%02d, compression level %d\n", ape->fileversion / 1000, (ape->fileversion % 1000) / 10, ape->compressiontype);
total_blocks = (ape->totalframes == 0) ? 0 : ((ape->totalframes - 1) * ape->blocksperframe) + ape->finalframeblocks;
- st->codec->codec_type = CODEC_TYPE_AUDIO;
+ st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
st->codec->codec_id = CODEC_ID_APE;
st->codec->codec_tag = MKTAG('A', 'P', 'E', ' ');
st->codec->channels = ape->channels;
st->codec->frame_size = MAC_SUBFRAME_SIZE;
st->nb_frames = ape->totalframes;
- s->start_time = 0;
- s->duration = (int64_t) total_blocks * AV_TIME_BASE / ape->samplerate;
+ st->start_time = 0;
+ st->duration = total_blocks / MAC_SUBFRAME_SIZE;
av_set_pts_info(st, 64, MAC_SUBFRAME_SIZE, ape->samplerate);
st->codec->extradata = av_malloc(APE_EXTRADATA_SIZE);
uint32_t extra_size = 8;
if (url_feof(s->pb))
- return AVERROR_IO;
+ return AVERROR(EIO);
if (ape->currentframe > ape->totalframes)
- return AVERROR_IO;
+ return AVERROR(EIO);
- url_fseek (s->pb, ape->frames[ape->currentframe].pos, SEEK_SET);
+ avio_seek (s->pb, ape->frames[ape->currentframe].pos, SEEK_SET);
/* Calculate how many blocks there are in this frame */
if (ape->currentframe == (ape->totalframes - 1))
nblocks = ape->blocksperframe;
if (av_new_packet(pkt, ape->frames[ape->currentframe].size + extra_size) < 0)
- return AVERROR_NOMEM;
+ return AVERROR(ENOMEM);
AV_WL32(pkt->data , nblocks);
AV_WL32(pkt->data + 4, ape->frames[ape->currentframe].skip);
- ret = get_buffer(s->pb, pkt->data + extra_size, ape->frames[ape->currentframe].size);
+ ret = avio_read(s->pb, pkt->data + extra_size, ape->frames[ape->currentframe].size);
pkt->pts = ape->frames[ape->currentframe].pts;
pkt->stream_index = 0;
return 0;
}
-AVInputFormat ape_demuxer = {
+AVInputFormat ff_ape_demuxer = {
"ape",
NULL_IF_CONFIG_SMALL("Monkey's Audio"),
sizeof(APEContext),
projects / ffmpeg / blobdiff