* Copyright (c) 2007 Justin Ruggles
* Copyright (c) 2009 Peter Ross
*
- * 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 "riff.h"
#include "isom.h"
#include "libavutil/intreadwrite.h"
+#include "libavutil/intfloat_readwrite.h"
+#include "libavutil/dict.h"
#include "caf.h"
typedef struct {
/** Read audio description chunk */
static int read_desc_chunk(AVFormatContext *s)
{
- ByteIOContext *pb = s->pb;
+ AVIOContext *pb = s->pb;
CaffContext *caf = s->priv_data;
AVStream *st;
int flags;
/* parse format description */
st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
- st->codec->sample_rate = av_int2dbl(get_be64(pb));
- st->codec->codec_tag = get_be32(pb);
- flags = get_be32(pb);
- caf->bytes_per_packet = get_be32(pb);
+ st->codec->sample_rate = av_int2dbl(avio_rb64(pb));
+ st->codec->codec_tag = avio_rb32(pb);
+ flags = avio_rb32(pb);
+ caf->bytes_per_packet = avio_rb32(pb);
st->codec->block_align = caf->bytes_per_packet;
- caf->frames_per_packet = get_be32(pb);
- st->codec->channels = get_be32(pb);
- st->codec->bits_per_coded_sample = get_be32(pb);
+ caf->frames_per_packet = avio_rb32(pb);
+ st->codec->channels = avio_rb32(pb);
+ st->codec->bits_per_coded_sample = avio_rb32(pb);
/* calculate bit rate for constant size packets */
if (caf->frames_per_packet > 0 && caf->bytes_per_packet > 0) {
/** Read magic cookie chunk */
static int read_kuki_chunk(AVFormatContext *s, int64_t size)
{
- ByteIOContext *pb = s->pb;
+ AVIOContext *pb = s->pb;
AVStream *st = s->streams[0];
if (size < 0 || size > INT_MAX - FF_INPUT_BUFFER_PADDING_SIZE)
int strt, skip;
MOVAtom atom;
- strt = url_ftell(pb);
+ strt = avio_tell(pb);
ff_mov_read_esds(s, pb, atom);
- skip = size - (url_ftell(pb) - strt);
+ skip = size - (avio_tell(pb) - strt);
if (skip < 0 || !st->codec->extradata ||
st->codec->codec_id != CODEC_ID_AAC) {
av_log(s, AV_LOG_ERROR, "invalid AAC magic cookie\n");
return AVERROR_INVALIDDATA;
}
- url_fskip(pb, skip);
+ avio_skip(pb, skip);
+ } else if (st->codec->codec_id == CODEC_ID_ALAC) {
+#define ALAC_PREAMBLE 12
+#define ALAC_HEADER 36
+ if (size < ALAC_PREAMBLE + ALAC_HEADER) {
+ av_log(s, AV_LOG_ERROR, "invalid ALAC magic cookie\n");
+ avio_skip(pb, size);
+ return AVERROR_INVALIDDATA;
+ }
+ avio_skip(pb, ALAC_PREAMBLE);
+ st->codec->extradata = av_mallocz(ALAC_HEADER + FF_INPUT_BUFFER_PADDING_SIZE);
+ if (!st->codec->extradata)
+ return AVERROR(ENOMEM);
+ avio_read(pb, st->codec->extradata, ALAC_HEADER);
+ st->codec->extradata_size = ALAC_HEADER;
+ avio_skip(pb, size - ALAC_PREAMBLE - ALAC_HEADER);
} else {
st->codec->extradata = av_mallocz(size + FF_INPUT_BUFFER_PADDING_SIZE);
if (!st->codec->extradata)
return AVERROR(ENOMEM);
- get_buffer(pb, st->codec->extradata, size);
+ avio_read(pb, st->codec->extradata, size);
st->codec->extradata_size = size;
}
/** Read packet table chunk */
static int read_pakt_chunk(AVFormatContext *s, int64_t size)
{
- ByteIOContext *pb = s->pb;
+ AVIOContext *pb = s->pb;
AVStream *st = s->streams[0];
CaffContext *caf = s->priv_data;
int64_t pos = 0, ccount;
int num_packets, i;
- ccount = url_ftell(pb);
+ ccount = avio_tell(pb);
- num_packets = get_be64(pb);
+ num_packets = avio_rb64(pb);
if (num_packets < 0 || INT32_MAX / sizeof(AVIndexEntry) < num_packets)
return AVERROR_INVALIDDATA;
- st->nb_frames = get_be64(pb); /* valid frames */
- st->nb_frames += get_be32(pb); /* priming frames */
- st->nb_frames += get_be32(pb); /* remainder frames */
+ st->nb_frames = avio_rb64(pb); /* valid frames */
+ st->nb_frames += avio_rb32(pb); /* priming frames */
+ st->nb_frames += avio_rb32(pb); /* remainder frames */
st->duration = 0;
for (i = 0; i < num_packets; i++) {
st->duration += caf->frames_per_packet ? caf->frames_per_packet : ff_mp4_read_descr_len(pb);
}
- if (url_ftell(pb) - ccount != size) {
+ if (avio_tell(pb) - ccount != size) {
av_log(s, AV_LOG_ERROR, "error reading packet table\n");
return -1;
}
/** Read information chunk */
static void read_info_chunk(AVFormatContext *s, int64_t size)
{
- ByteIOContext *pb = s->pb;
+ AVIOContext *pb = s->pb;
unsigned int i;
- unsigned int nb_entries = get_be32(pb);
+ unsigned int nb_entries = avio_rb32(pb);
for (i = 0; i < nb_entries; i++) {
char key[32];
char value[1024];
- get_strz(pb, key, sizeof(key));
- get_strz(pb, value, sizeof(value));
- av_metadata_set(&s->metadata, key, value);
+ avio_get_str(pb, INT_MAX, key, sizeof(key));
+ avio_get_str(pb, INT_MAX, value, sizeof(value));
+ av_dict_set(&s->metadata, key, value, 0);
}
}
static int read_header(AVFormatContext *s,
AVFormatParameters *ap)
{
- ByteIOContext *pb = s->pb;
+ AVIOContext *pb = s->pb;
CaffContext *caf = s->priv_data;
AVStream *st;
uint32_t tag = 0;
int found_data, ret;
int64_t size;
- url_fskip(pb, 8); /* magic, version, file flags */
+ avio_skip(pb, 8); /* magic, version, file flags */
/* audio description chunk */
- if (get_be32(pb) != MKBETAG('d','e','s','c')) {
+ if (avio_rb32(pb) != MKBETAG('d','e','s','c')) {
av_log(s, AV_LOG_ERROR, "desc chunk not present\n");
return AVERROR_INVALIDDATA;
}
- size = get_be64(pb);
+ size = avio_rb64(pb);
if (size != 32)
return AVERROR_INVALIDDATA;
/* parse each chunk */
found_data = 0;
- while (!url_feof(pb)) {
+ while (!pb->eof_reached) {
/* stop at data chunk if seeking is not supported or
data chunk size is unknown */
- if (found_data && (caf->data_size < 0 || url_is_streamed(pb)))
+ if (found_data && (caf->data_size < 0 || !pb->seekable))
break;
- tag = get_be32(pb);
- size = get_be64(pb);
- if (url_feof(pb))
+ tag = avio_rb32(pb);
+ size = avio_rb64(pb);
+ if (pb->eof_reached)
break;
switch (tag) {
case MKBETAG('d','a','t','a'):
- url_fskip(pb, 4); /* edit count */
- caf->data_start = url_ftell(pb);
+ avio_skip(pb, 4); /* edit count */
+ caf->data_start = avio_tell(pb);
caf->data_size = size < 0 ? -1 : size - 4;
- if (caf->data_size > 0 && !url_is_streamed(pb))
- url_fskip(pb, caf->data_size);
+ if (caf->data_size > 0 && pb->seekable)
+ avio_skip(pb, caf->data_size);
found_data = 1;
break;
case MKBETAG('f','r','e','e'):
if (size < 0)
return AVERROR_INVALIDDATA;
- url_fskip(pb, size);
+ avio_skip(pb, size);
break;
}
}
"block size or frame size are variable.\n");
return AVERROR_INVALIDDATA;
}
- s->file_size = url_fsize(pb);
+ s->file_size = avio_size(pb);
s->file_size = FFMAX(0, s->file_size);
av_set_pts_info(st, 64, 1, st->codec->sample_rate);
/* position the stream at the start of data */
if (caf->data_size >= 0)
- url_fseek(pb, caf->data_start, SEEK_SET);
+ avio_seek(pb, caf->data_start, SEEK_SET);
return 0;
}
static int read_packet(AVFormatContext *s, AVPacket *pkt)
{
- ByteIOContext *pb = s->pb;
+ AVIOContext *pb = s->pb;
AVStream *st = s->streams[0];
CaffContext *caf = s->priv_data;
int res, pkt_size = 0, pkt_frames = 0;
int64_t left = CAF_MAX_PKT_SIZE;
- if (url_feof(pb))
+ if (pb->eof_reached)
return AVERROR(EIO);
/* don't read past end of data chunk */
if (caf->data_size > 0) {
- left = (caf->data_start + caf->data_size) - url_ftell(pb);
+ left = (caf->data_start + caf->data_size) - avio_tell(pb);
if (left <= 0)
return AVERROR(EIO);
}
return -1;
}
- url_fseek(s->pb, pos + caf->data_start, SEEK_SET);
+ avio_seek(s->pb, pos + caf->data_start, SEEK_SET);
return 0;
}
-AVInputFormat caf_demuxer = {
+AVInputFormat ff_caf_demuxer = {
"caf",
NULL_IF_CONFIG_SMALL("Apple Core Audio Format"),
sizeof(CaffContext),
projects / ffmpeg / blobdiff