* Copyright (c) 2007 Benjamin Zores <ben@geexbox.org>
* based upon libdemac from Dave Chapman.
*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
- * FFmpeg is distributed in the hope that it will be useful,
+ * Libav is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "libavutil/intreadwrite.h"
#include "avformat.h"
+#include "internal.h"
#include "apetag.h"
-#define ENABLE_DEBUG 0
-
/* The earliest and latest file formats supported by this library */
-#define APE_MIN_VERSION 3950
+#define APE_MIN_VERSION 3800
#define APE_MAX_VERSION 3990
#define MAC_FORMAT_FLAG_8_BIT 1 // is 8-bit [OBSOLETE]
#define APE_EXTRADATA_SIZE 6
-typedef struct {
+typedef struct APEFrame {
int64_t pos;
int nblocks;
int size;
int64_t pts;
} APEFrame;
-typedef struct {
+typedef struct APEContext {
/* Derived fields */
uint32_t junklength;
uint32_t firstframe;
/* Seektable */
uint32_t *seektable;
+ uint8_t *bittable;
} APEContext;
static int ape_probe(AVProbeData * p)
static void ape_dumpinfo(AVFormatContext * s, APEContext * ape_ctx)
{
-#if ENABLE_DEBUG
+#ifdef DEBUG
int i;
av_log(s, AV_LOG_DEBUG, "Descriptor Block:\n\n");
av_log(s, AV_LOG_DEBUG, "magic = \"%c%c%c%c\"\n", ape_ctx->magic[0], ape_ctx->magic[1], ape_ctx->magic[2], ape_ctx->magic[3]);
- av_log(s, AV_LOG_DEBUG, "fileversion = %d\n", ape_ctx->fileversion);
- av_log(s, AV_LOG_DEBUG, "descriptorlength = %d\n", ape_ctx->descriptorlength);
- av_log(s, AV_LOG_DEBUG, "headerlength = %d\n", ape_ctx->headerlength);
- av_log(s, AV_LOG_DEBUG, "seektablelength = %d\n", ape_ctx->seektablelength);
- av_log(s, AV_LOG_DEBUG, "wavheaderlength = %d\n", ape_ctx->wavheaderlength);
- av_log(s, AV_LOG_DEBUG, "audiodatalength = %d\n", ape_ctx->audiodatalength);
- av_log(s, AV_LOG_DEBUG, "audiodatalength_high = %d\n", ape_ctx->audiodatalength_high);
- av_log(s, AV_LOG_DEBUG, "wavtaillength = %d\n", ape_ctx->wavtaillength);
+ av_log(s, AV_LOG_DEBUG, "fileversion = %"PRId16"\n", ape_ctx->fileversion);
+ av_log(s, AV_LOG_DEBUG, "descriptorlength = %"PRIu32"\n", ape_ctx->descriptorlength);
+ av_log(s, AV_LOG_DEBUG, "headerlength = %"PRIu32"\n", ape_ctx->headerlength);
+ av_log(s, AV_LOG_DEBUG, "seektablelength = %"PRIu32"\n", ape_ctx->seektablelength);
+ av_log(s, AV_LOG_DEBUG, "wavheaderlength = %"PRIu32"\n", ape_ctx->wavheaderlength);
+ av_log(s, AV_LOG_DEBUG, "audiodatalength = %"PRIu32"\n", ape_ctx->audiodatalength);
+ av_log(s, AV_LOG_DEBUG, "audiodatalength_high = %"PRIu32"\n", ape_ctx->audiodatalength_high);
+ av_log(s, AV_LOG_DEBUG, "wavtaillength = %"PRIu32"\n", ape_ctx->wavtaillength);
av_log(s, AV_LOG_DEBUG, "md5 = ");
for (i = 0; i < 16; i++)
av_log(s, AV_LOG_DEBUG, "%02x", ape_ctx->md5[i]);
av_log(s, AV_LOG_DEBUG, "\nHeader Block:\n\n");
- av_log(s, AV_LOG_DEBUG, "compressiontype = %d\n", ape_ctx->compressiontype);
- av_log(s, AV_LOG_DEBUG, "formatflags = %d\n", ape_ctx->formatflags);
- av_log(s, AV_LOG_DEBUG, "blocksperframe = %d\n", ape_ctx->blocksperframe);
- av_log(s, AV_LOG_DEBUG, "finalframeblocks = %d\n", ape_ctx->finalframeblocks);
- av_log(s, AV_LOG_DEBUG, "totalframes = %d\n", ape_ctx->totalframes);
- av_log(s, AV_LOG_DEBUG, "bps = %d\n", ape_ctx->bps);
- av_log(s, AV_LOG_DEBUG, "channels = %d\n", ape_ctx->channels);
- av_log(s, AV_LOG_DEBUG, "samplerate = %d\n", ape_ctx->samplerate);
+ av_log(s, AV_LOG_DEBUG, "compressiontype = %"PRIu16"\n", ape_ctx->compressiontype);
+ av_log(s, AV_LOG_DEBUG, "formatflags = %"PRIu16"\n", ape_ctx->formatflags);
+ av_log(s, AV_LOG_DEBUG, "blocksperframe = %"PRIu32"\n", ape_ctx->blocksperframe);
+ av_log(s, AV_LOG_DEBUG, "finalframeblocks = %"PRIu32"\n", ape_ctx->finalframeblocks);
+ av_log(s, AV_LOG_DEBUG, "totalframes = %"PRIu32"\n", ape_ctx->totalframes);
+ av_log(s, AV_LOG_DEBUG, "bps = %"PRIu16"\n", ape_ctx->bps);
+ av_log(s, AV_LOG_DEBUG, "channels = %"PRIu16"\n", ape_ctx->channels);
+ av_log(s, AV_LOG_DEBUG, "samplerate = %"PRIu32"\n", ape_ctx->samplerate);
av_log(s, AV_LOG_DEBUG, "\nSeektable\n\n");
if ((ape_ctx->seektablelength / sizeof(uint32_t)) != ape_ctx->totalframes) {
} else {
for (i = 0; i < ape_ctx->seektablelength / sizeof(uint32_t); i++) {
if (i < ape_ctx->totalframes - 1) {
- av_log(s, AV_LOG_DEBUG, "%8d %d (%d bytes)\n", i, ape_ctx->seektable[i], ape_ctx->seektable[i + 1] - ape_ctx->seektable[i]);
+ av_log(s, AV_LOG_DEBUG, "%8d %"PRIu32" (%"PRIu32" bytes)",
+ i, ape_ctx->seektable[i],
+ ape_ctx->seektable[i + 1] - ape_ctx->seektable[i]);
+ if (ape_ctx->bittable)
+ av_log(s, AV_LOG_DEBUG, " + %2d bits\n",
+ ape_ctx->bittable[i]);
+ av_log(s, AV_LOG_DEBUG, "\n");
} else {
- av_log(s, AV_LOG_DEBUG, "%8d %d\n", i, ape_ctx->seektable[i]);
+ av_log(s, AV_LOG_DEBUG, "%8d %"PRIu32"\n", i, ape_ctx->seektable[i]);
}
}
}
av_log(s, AV_LOG_DEBUG, "\nFrames\n\n");
for (i = 0; i < ape_ctx->totalframes; i++)
- av_log(s, AV_LOG_DEBUG, "%8d %8lld %8d (%d samples)\n", i, ape_ctx->frames[i].pos, ape_ctx->frames[i].size, ape_ctx->frames[i].nblocks);
+ av_log(s, AV_LOG_DEBUG, "%8d %8"PRId64" %8d (%d samples)\n", i,
+ ape_ctx->frames[i].pos, ape_ctx->frames[i].size,
+ ape_ctx->frames[i].nblocks);
av_log(s, AV_LOG_DEBUG, "\nCalculated information:\n\n");
- av_log(s, AV_LOG_DEBUG, "junklength = %d\n", ape_ctx->junklength);
- av_log(s, AV_LOG_DEBUG, "firstframe = %d\n", ape_ctx->firstframe);
- av_log(s, AV_LOG_DEBUG, "totalsamples = %d\n", ape_ctx->totalsamples);
+ av_log(s, AV_LOG_DEBUG, "junklength = %"PRIu32"\n", ape_ctx->junklength);
+ av_log(s, AV_LOG_DEBUG, "firstframe = %"PRIu32"\n", ape_ctx->firstframe);
+ av_log(s, AV_LOG_DEBUG, "totalsamples = %"PRIu32"\n", ape_ctx->totalsamples);
#endif
}
-static int ape_read_header(AVFormatContext * s, AVFormatParameters * ap)
+static int ape_read_header(AVFormatContext * s)
{
AVIOContext *pb = s->pb;
APEContext *ape = s->priv_data;
AVStream *st;
uint32_t tag;
int i;
- int total_blocks;
- int64_t pts;
+ int total_blocks, final_size = 0;
+ int64_t pts, file_size;
- /* 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 = avio_rl32(pb);
if (tag != MKTAG('M', 'A', 'C', ' '))
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);
+ av_log(s, AV_LOG_ERROR, "Unsupported file version - %d.%02d\n",
+ ape->fileversion / 1000, (ape->fileversion % 1000) / 10);
return -1;
}
/* Skip any unknown bytes at the end of the descriptor.
This is for future compatibility */
if (ape->descriptorlength > 52)
- avio_seek(pb, ape->descriptorlength - 52, SEEK_CUR);
+ avio_skip(pb, ape->descriptorlength - 52);
/* Read header data */
ape->compressiontype = avio_rl16(pb);
ape->finalframeblocks = avio_rl32(pb);
if (ape->formatflags & MAC_FORMAT_FLAG_HAS_PEAK_LEVEL) {
- avio_seek(pb, 4, SEEK_CUR); /* Skip the peak level */
+ avio_skip(pb, 4); /* Skip the peak level */
ape->headerlength += 4;
}
/* Skip any stored wav header */
if (!(ape->formatflags & MAC_FORMAT_FLAG_CREATE_WAV_HEADER))
- avio_seek(pb, ape->wavheaderlength, SEEK_CUR);
+ 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);
+ av_log(s, AV_LOG_ERROR, "Too many frames: %"PRIu32"\n",
+ ape->totalframes);
return -1;
}
+ if (ape->seektablelength / sizeof(*ape->seektable) < ape->totalframes) {
+ av_log(s, AV_LOG_ERROR,
+ "Number of seek entries is less than number of frames: %zu vs. %"PRIu32"\n",
+ ape->seektablelength / sizeof(*ape->seektable), ape->totalframes);
+ return AVERROR_INVALIDDATA;
+ }
ape->frames = av_malloc(ape->totalframes * sizeof(APEFrame));
if(!ape->frames)
return AVERROR(ENOMEM);
ape->firstframe = ape->junklength + ape->descriptorlength + ape->headerlength + ape->seektablelength + ape->wavheaderlength;
+ if (ape->fileversion < 3810)
+ ape->firstframe += ape->totalframes;
ape->currentframe = 0;
if (ape->seektablelength > 0) {
ape->seektable = av_malloc(ape->seektablelength);
- for (i = 0; i < ape->seektablelength / sizeof(uint32_t); i++)
+ if (!ape->seektable)
+ return AVERROR(ENOMEM);
+ for (i = 0; i < ape->seektablelength / sizeof(uint32_t) && !pb->eof_reached; i++)
ape->seektable[i] = avio_rl32(pb);
+ if (ape->fileversion < 3810) {
+ ape->bittable = av_malloc(ape->totalframes);
+ if (!ape->bittable)
+ return AVERROR(ENOMEM);
+ for (i = 0; i < ape->totalframes && !pb->eof_reached; i++)
+ ape->bittable[i] = avio_r8(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].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->frames[ape->totalframes - 1].size = ape->finalframeblocks * 4;
ape->frames[ape->totalframes - 1].nblocks = ape->finalframeblocks;
+ /* calculate final packet size from total file size, if available */
+ file_size = avio_size(pb);
+ if (file_size > 0) {
+ final_size = file_size - ape->frames[ape->totalframes - 1].pos -
+ ape->wavtaillength;
+ final_size -= final_size & 3;
+ }
+ if (file_size <= 0 || final_size <= 0)
+ final_size = ape->finalframeblocks * 8;
+ ape->frames[ape->totalframes - 1].size = final_size;
for (i = 0; i < ape->totalframes; i++) {
if(ape->frames[i].skip){
}
ape->frames[i].size = (ape->frames[i].size + 3) & ~3;
}
-
+ if (ape->fileversion < 3810) {
+ for (i = 0; i < ape->totalframes; i++) {
+ if (i < ape->totalframes - 1 && ape->bittable[i + 1])
+ ape->frames[i].size += 4;
+ ape->frames[i].skip <<= 3;
+ ape->frames[i].skip += ape->bittable[i];
+ }
+ }
ape_dumpinfo(s, ape);
- /* try to read APE tags */
- if (!url_is_streamed(pb)) {
- 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);
+ av_log(s, AV_LOG_DEBUG, "Decoding file - v%d.%02d, compression level %"PRIu16"\n",
+ ape->fileversion / 1000, (ape->fileversion % 1000) / 10,
+ ape->compressiontype);
/* now we are ready: build format streams */
- st = av_new_stream(s, 0);
+ st = avformat_new_stream(s, NULL);
if (!st)
return -1;
total_blocks = (ape->totalframes == 0) ? 0 : ((ape->totalframes - 1) * ape->blocksperframe) + ape->finalframeblocks;
- 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->sample_rate = ape->samplerate;
- st->codec->bits_per_coded_sample = ape->bps;
- st->codec->frame_size = MAC_SUBFRAME_SIZE;
+ st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
+ st->codecpar->codec_id = AV_CODEC_ID_APE;
+ st->codecpar->codec_tag = MKTAG('A', 'P', 'E', ' ');
+ st->codecpar->channels = ape->channels;
+ st->codecpar->sample_rate = ape->samplerate;
+ st->codecpar->bits_per_coded_sample = ape->bps;
st->nb_frames = ape->totalframes;
st->start_time = 0;
st->duration = total_blocks / MAC_SUBFRAME_SIZE;
- av_set_pts_info(st, 64, MAC_SUBFRAME_SIZE, ape->samplerate);
+ avpriv_set_pts_info(st, 64, MAC_SUBFRAME_SIZE, ape->samplerate);
- st->codec->extradata = av_malloc(APE_EXTRADATA_SIZE);
- st->codec->extradata_size = APE_EXTRADATA_SIZE;
- AV_WL16(st->codec->extradata + 0, ape->fileversion);
- AV_WL16(st->codec->extradata + 2, ape->compressiontype);
- AV_WL16(st->codec->extradata + 4, ape->formatflags);
+ st->codecpar->extradata = av_malloc(APE_EXTRADATA_SIZE);
+ st->codecpar->extradata_size = APE_EXTRADATA_SIZE;
+ AV_WL16(st->codecpar->extradata + 0, ape->fileversion);
+ AV_WL16(st->codecpar->extradata + 2, ape->compressiontype);
+ AV_WL16(st->codecpar->extradata + 4, ape->formatflags);
pts = 0;
for (i = 0; i < ape->totalframes; i++) {
pts += ape->blocksperframe / MAC_SUBFRAME_SIZE;
}
+ /* try to read APE tags */
+ if (pb->seekable) {
+ ff_ape_parse_tag(s);
+ avio_seek(pb, 0, SEEK_SET);
+ }
+
return 0;
}
APEContext *ape = s->priv_data;
uint32_t extra_size = 8;
- if (url_feof(s->pb))
- return AVERROR(EIO);
- if (ape->currentframe > ape->totalframes)
- return AVERROR(EIO);
+ if (s->pb->eof_reached)
+ return AVERROR_EOF;
+ if (ape->currentframe >= ape->totalframes)
+ return AVERROR_EOF;
- avio_seek (s->pb, ape->frames[ape->currentframe].pos, SEEK_SET);
+ if (avio_seek(s->pb, ape->frames[ape->currentframe].pos, SEEK_SET) < 0)
+ return AVERROR(EIO);
/* Calculate how many blocks there are in this frame */
if (ape->currentframe == (ape->totalframes - 1))
else
nblocks = ape->blocksperframe;
+ if (ape->frames[ape->currentframe].size <= 0 ||
+ ape->frames[ape->currentframe].size > INT_MAX - extra_size) {
+ av_log(s, AV_LOG_ERROR, "invalid packet size: %d\n",
+ ape->frames[ape->currentframe].size);
+ ape->currentframe++;
+ return AVERROR(EIO);
+ }
+
if (av_new_packet(pkt, ape->frames[ape->currentframe].size + extra_size) < 0)
return AVERROR(ENOMEM);
av_freep(&ape->frames);
av_freep(&ape->seektable);
+ av_freep(&ape->bittable);
return 0;
}
if (index < 0)
return -1;
+ if (avio_seek(s->pb, st->index_entries[index].pos, SEEK_SET) < 0)
+ return -1;
ape->currentframe = index;
return 0;
}
AVInputFormat ff_ape_demuxer = {
- "ape",
- NULL_IF_CONFIG_SMALL("Monkey's Audio"),
- sizeof(APEContext),
- ape_probe,
- ape_read_header,
- ape_read_packet,
- ape_read_close,
- ape_read_seek,
- .extensions = "ape,apl,mac"
+ .name = "ape",
+ .long_name = NULL_IF_CONFIG_SMALL("Monkey's Audio"),
+ .priv_data_size = sizeof(APEContext),
+ .read_probe = ape_probe,
+ .read_header = ape_read_header,
+ .read_packet = ape_read_packet,
+ .read_close = ape_read_close,
+ .read_seek = ape_read_seek,
+ .extensions = "ape,apl,mac",
};
projects / ffmpeg / blobdiff