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-rw-r--r--libavformat/aiffdec.c138
1 files changed, 104 insertions, 34 deletions
diff --git a/libavformat/aiffdec.c b/libavformat/aiffdec.c
index e56390937e..d191bc4c04 100644
--- a/libavformat/aiffdec.c
+++ b/libavformat/aiffdec.c
@@ -2,29 +2,33 @@
* AIFF/AIFF-C demuxer
* Copyright (c) 2006 Patrick Guimond
*
- * This file is part of Libav.
+ * This file is part of FFmpeg.
*
- * Libav is free software; you can redistribute it and/or
+ * FFmpeg 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.
*
- * Libav is distributed in the hope that it will be useful,
+ * FFmpeg 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 Libav; if not, write to the Free Software
+ * License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
+#include "libavutil/intreadwrite.h"
#include "libavutil/mathematics.h"
#include "libavutil/dict.h"
#include "avformat.h"
#include "internal.h"
#include "pcm.h"
#include "aiff.h"
+#include "isom.h"
+#include "id3v2.h"
+#include "mov_chan.h"
#define AIFF 0
#define AIFF_C_VERSION1 0xA2805140
@@ -54,7 +58,7 @@ static int get_tag(AVIOContext *pb, uint32_t * tag)
{
int size;
- if (pb->eof_reached)
+ if (avio_feof(pb))
return AVERROR(EIO);
*tag = avio_rl32(pb);
@@ -70,23 +74,24 @@ static int get_tag(AVIOContext *pb, uint32_t * tag)
static void get_meta(AVFormatContext *s, const char *key, int size)
{
uint8_t *str = av_malloc(size+1);
- int res;
- if (!str) {
- avio_skip(s->pb, size);
- return;
- }
-
- res = avio_read(s->pb, str, size);
- if (res < 0)
- return;
+ if (str) {
+ int res = avio_read(s->pb, str, size);
+ if (res < 0){
+ av_free(str);
+ return;
+ }
+ size += (size&1)-res;
+ str[res] = 0;
+ av_dict_set(&s->metadata, key, str, AV_DICT_DONT_STRDUP_VAL);
+ }else
+ size+= size&1;
- str[res] = 0;
- av_dict_set(&s->metadata, key, str, AV_DICT_DONT_STRDUP_VAL);
+ avio_skip(s->pb, size);
}
/* Returns the number of sound data frames or negative on error */
-static unsigned int get_aiff_header(AVFormatContext *s, int size,
+static int get_aiff_header(AVFormatContext *s, int size,
unsigned version)
{
AVIOContext *pb = s->pb;
@@ -94,7 +99,7 @@ static unsigned int get_aiff_header(AVFormatContext *s, int size,
AIFFInputContext *aiff = s->priv_data;
int exp;
uint64_t val;
- double sample_rate;
+ int sample_rate;
unsigned int num_frames;
if (size & 1)
@@ -104,16 +109,30 @@ static unsigned int get_aiff_header(AVFormatContext *s, int size,
num_frames = avio_rb32(pb);
par->bits_per_coded_sample = avio_rb16(pb);
- exp = avio_rb16(pb);
+ exp = avio_rb16(pb) - 16383 - 63;
val = avio_rb64(pb);
- sample_rate = ldexp(val, exp - 16383 - 63);
+ if (exp <-63 || exp >63) {
+ av_log(s, AV_LOG_ERROR, "exp %d is out of range\n", exp);
+ return AVERROR_INVALIDDATA;
+ }
+ if (exp >= 0)
+ sample_rate = val << exp;
+ else
+ sample_rate = (val + (1ULL<<(-exp-1))) >> -exp;
par->sample_rate = sample_rate;
size -= 18;
/* get codec id for AIFF-C */
- if (version == AIFF_C_VERSION1) {
+ if (size < 4) {
+ version = AIFF;
+ } else if (version == AIFF_C_VERSION1) {
par->codec_tag = avio_rl32(pb);
par->codec_id = ff_codec_get_id(ff_codec_aiff_tags, par->codec_tag);
+ if (par->codec_id == AV_CODEC_ID_NONE) {
+ char tag[32];
+ av_get_codec_tag_string(tag, sizeof(tag), par->codec_tag);
+ avpriv_request_sample(s, "unknown or unsupported codec tag: %s", tag);
+ }
size -= 4;
}
@@ -136,17 +155,19 @@ static unsigned int get_aiff_header(AVFormatContext *s, int size,
case AV_CODEC_ID_MACE3:
par->block_align = 2 * par->channels;
break;
+ case AV_CODEC_ID_ADPCM_G726LE:
+ par->bits_per_coded_sample = 5;
+ case AV_CODEC_ID_ADPCM_IMA_WS:
case AV_CODEC_ID_ADPCM_G722:
case AV_CODEC_ID_MACE6:
+ case AV_CODEC_ID_SDX2_DPCM:
par->block_align = 1 * par->channels;
break;
case AV_CODEC_ID_GSM:
par->block_align = 33;
break;
- case AV_CODEC_ID_QCELP:
- par->block_align = 35;
- break;
default:
+ aiff->block_duration = 1;
break;
}
if (par->block_align > 0)
@@ -157,7 +178,7 @@ static unsigned int get_aiff_header(AVFormatContext *s, int size,
/* Block align needs to be computed in all cases, as the definition
* is specific to applications -> here we use the WAVE format definition */
if (!par->block_align)
- par->block_align = (par->bits_per_coded_sample * par->channels) >> 3;
+ par->block_align = (av_get_bits_per_sample(par->codec_id) * par->channels) >> 3;
if (aiff->block_duration) {
par->bit_rate = par->sample_rate * (par->block_align << 3) /
@@ -186,13 +207,14 @@ static int aiff_probe(AVProbeData *p)
/* aiff input */
static int aiff_read_header(AVFormatContext *s)
{
- int size, filesize;
- int64_t offset = 0;
+ int ret, size, filesize;
+ int64_t offset = 0, position;
uint32_t tag;
unsigned version = AIFF_C_VERSION1;
AVIOContext *pb = s->pb;
AVStream * st;
AIFFInputContext *aiff = s->priv_data;
+ ID3v2ExtraMeta *id3v2_extra_meta = NULL;
/* check FORM header */
filesize = get_tag(pb, &tag);
@@ -215,6 +237,11 @@ static int aiff_read_header(AVFormatContext *s)
while (filesize > 0) {
/* parse different chunks */
size = get_tag(pb, &tag);
+
+ if (size == AVERROR_EOF && offset > 0 && st->codecpar->block_align) {
+ av_log(s, AV_LOG_WARNING, "header parser hit EOF\n");
+ goto got_sound;
+ }
if (size < 0)
return size;
@@ -229,6 +256,18 @@ static int aiff_read_header(AVFormatContext *s)
if (offset > 0) // COMM is after SSND
goto got_sound;
break;
+ case MKTAG('I', 'D', '3', ' '):
+ position = avio_tell(pb);
+ ff_id3v2_read(s, ID3v2_DEFAULT_MAGIC, &id3v2_extra_meta, size);
+ if (id3v2_extra_meta)
+ if ((ret = ff_id3v2_parse_apic(s, &id3v2_extra_meta)) < 0) {
+ ff_id3v2_free_extra_meta(&id3v2_extra_meta);
+ return ret;
+ }
+ ff_id3v2_free_extra_meta(&id3v2_extra_meta);
+ if (position + size > avio_tell(pb))
+ avio_skip(pb, position + size - avio_tell(pb));
+ break;
case MKTAG('F', 'V', 'E', 'R'): /* Version chunk */
version = avio_rb32(pb);
break;
@@ -249,7 +288,7 @@ static int aiff_read_header(AVFormatContext *s)
offset = avio_rb32(pb); /* Offset of sound data */
avio_rb32(pb); /* BlockSize... don't care */
offset += avio_tell(pb); /* Compute absolute data offset */
- if (st->codecpar->block_align) /* Assume COMM already parsed */
+ if (st->codecpar->block_align && !pb->seekable) /* Assume COMM already parsed */
goto got_sound;
if (!pb->seekable) {
av_log(s, AV_LOG_ERROR, "file is not seekable\n");
@@ -260,12 +299,35 @@ static int aiff_read_header(AVFormatContext *s)
case MKTAG('w', 'a', 'v', 'e'):
if ((uint64_t)size > (1<<30))
return -1;
- st->codecpar->extradata = av_mallocz(size + AV_INPUT_BUFFER_PADDING_SIZE);
- if (!st->codecpar->extradata)
+ if (ff_get_extradata(s, st->codecpar, pb, size) < 0)
return AVERROR(ENOMEM);
- st->codecpar->extradata_size = size;
- avio_read(pb, st->codecpar->extradata, size);
+ if (st->codecpar->codec_id == AV_CODEC_ID_QDM2 && size>=12*4 && !st->codecpar->block_align) {
+ st->codecpar->block_align = AV_RB32(st->codecpar->extradata+11*4);
+ aiff->block_duration = AV_RB32(st->codecpar->extradata+9*4);
+ } else if (st->codecpar->codec_id == AV_CODEC_ID_QCELP) {
+ char rate = 0;
+ if (size >= 25)
+ rate = st->codecpar->extradata[24];
+ switch (rate) {
+ case 'H': // RATE_HALF
+ st->codecpar->block_align = 17;
+ break;
+ case 'F': // RATE_FULL
+ default:
+ st->codecpar->block_align = 35;
+ }
+ aiff->block_duration = 160;
+ st->codecpar->bit_rate = st->codecpar->sample_rate * (st->codecpar->block_align << 3) /
+ aiff->block_duration;
+ }
break;
+ case MKTAG('C','H','A','N'):
+ if(ff_mov_read_chan(s, pb, st, size) < 0)
+ return AVERROR_INVALIDDATA;
+ break;
+ case 0:
+ if (offset > 0 && st->codecpar->block_align) // COMM && SSND
+ goto got_sound;
default: /* Jump */
if (size & 1) /* Always even aligned */
size++;
@@ -306,15 +368,23 @@ static int aiff_read_packet(AVFormatContext *s,
return AVERROR_EOF;
/* Now for that packet */
- if (st->codecpar->block_align >= 33) // GSM, QCLP, IMA4
+ switch (st->codecpar->codec_id) {
+ case AV_CODEC_ID_ADPCM_IMA_QT:
+ case AV_CODEC_ID_GSM:
+ case AV_CODEC_ID_QDM2:
+ case AV_CODEC_ID_QCELP:
size = st->codecpar->block_align;
- else
+ break;
+ default:
size = (MAX_SIZE / st->codecpar->block_align) * st->codecpar->block_align;
+ }
size = FFMIN(max_size, size);
res = av_get_packet(s->pb, pkt, size);
if (res < 0)
return res;
+ if (size >= st->codecpar->block_align)
+ pkt->flags &= ~AV_PKT_FLAG_CORRUPT;
/* Only one stream in an AIFF file */
pkt->stream_index = 0;
pkt->duration = (res / st->codecpar->block_align) * aiff->block_duration;
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-09 12:38:52 +0000