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-rw-r--r--libavformat/flacdec.c169
1 files changed, 21 insertions, 148 deletions
diff --git a/libavformat/flacdec.c b/libavformat/flacdec.c
index 9737095bbb..8384076b3d 100644
--- a/libavformat/flacdec.c
+++ b/libavformat/flacdec.c
@@ -2,160 +2,32 @@
* Raw FLAC demuxer
* Copyright (c) 2001 Fabrice Bellard
*
- * 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 "libavcodec/flac.h"
#include "avformat.h"
-#include "id3v2.h"
+#include "flacdec.h"
#include "internal.h"
#include "rawdec.h"
#include "oggdec.h"
#include "vorbiscomment.h"
#include "libavcodec/bytestream.h"
-static int parse_picture(AVFormatContext *s, uint8_t *buf, int buf_size)
-{
- const CodecMime *mime = ff_id3v2_mime_tags;
- enum AVCodecID id = AV_CODEC_ID_NONE;
- AVBufferRef *data = NULL;
- uint8_t mimetype[64], *desc = NULL;
- AVIOContext *pb = NULL;
- AVStream *st;
- int type, width, height;
- int len, ret = 0;
-
- pb = avio_alloc_context(buf, buf_size, 0, NULL, NULL, NULL, NULL);
- if (!pb)
- return AVERROR(ENOMEM);
-
- /* read the picture type */
- type = avio_rb32(pb);
- if (type >= FF_ARRAY_ELEMS(ff_id3v2_picture_types) || type < 0) {
- av_log(s, AV_LOG_ERROR, "Invalid picture type: %d.\n", type);
- if (s->error_recognition & AV_EF_EXPLODE) {
- ret = AVERROR_INVALIDDATA;
- goto fail;
- }
- type = 0;
- }
-
- /* picture mimetype */
- len = avio_rb32(pb);
- if (len <= 0 ||
- avio_read(pb, mimetype, FFMIN(len, sizeof(mimetype) - 1)) != len) {
- av_log(s, AV_LOG_ERROR, "Could not read mimetype from an attached "
- "picture.\n");
- if (s->error_recognition & AV_EF_EXPLODE)
- ret = AVERROR_INVALIDDATA;
- goto fail;
- }
- mimetype[len] = 0;
-
- while (mime->id != AV_CODEC_ID_NONE) {
- if (!strncmp(mime->str, mimetype, sizeof(mimetype))) {
- id = mime->id;
- break;
- }
- mime++;
- }
- if (id == AV_CODEC_ID_NONE) {
- av_log(s, AV_LOG_ERROR, "Unknown attached picture mimetype: %s.\n",
- mimetype);
- if (s->error_recognition & AV_EF_EXPLODE)
- ret = AVERROR_INVALIDDATA;
- goto fail;
- }
-
- /* picture description */
- len = avio_rb32(pb);
- if (len > 0) {
- if (!(desc = av_malloc(len + 1))) {
- ret = AVERROR(ENOMEM);
- goto fail;
- }
-
- if (avio_read(pb, desc, len) != len) {
- av_log(s, AV_LOG_ERROR, "Error reading attached picture description.\n");
- if (s->error_recognition & AV_EF_EXPLODE)
- ret = AVERROR(EIO);
- goto fail;
- }
- desc[len] = 0;
- }
-
- /* picture metadata */
- width = avio_rb32(pb);
- height = avio_rb32(pb);
- avio_skip(pb, 8);
-
- /* picture data */
- len = avio_rb32(pb);
- if (len <= 0) {
- av_log(s, AV_LOG_ERROR, "Invalid attached picture size: %d.\n", len);
- if (s->error_recognition & AV_EF_EXPLODE)
- ret = AVERROR_INVALIDDATA;
- goto fail;
- }
- if (!(data = av_buffer_alloc(len))) {
- ret = AVERROR(ENOMEM);
- goto fail;
- }
- if (avio_read(pb, data->data, len) != len) {
- av_log(s, AV_LOG_ERROR, "Error reading attached picture data.\n");
- if (s->error_recognition & AV_EF_EXPLODE)
- ret = AVERROR(EIO);
- goto fail;
- }
-
- st = avformat_new_stream(s, NULL);
- if (!st) {
- ret = AVERROR(ENOMEM);
- goto fail;
- }
-
- av_init_packet(&st->attached_pic);
- st->attached_pic.buf = data;
- st->attached_pic.data = data->data;
- st->attached_pic.size = len;
- st->attached_pic.stream_index = st->index;
- st->attached_pic.flags |= AV_PKT_FLAG_KEY;
-
- st->disposition |= AV_DISPOSITION_ATTACHED_PIC;
- st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
- st->codec->codec_id = id;
- st->codec->width = width;
- st->codec->height = height;
- av_dict_set(&st->metadata, "comment", ff_id3v2_picture_types[type], 0);
- if (desc)
- av_dict_set(&st->metadata, "title", desc, AV_DICT_DONT_STRDUP_VAL);
-
- av_freep(&pb);
-
- return 0;
-
-fail:
- av_buffer_unref(&data);
- av_freep(&desc);
- av_freep(&pb);
- return ret;
-
-}
-
static int flac_read_header(AVFormatContext *s)
{
int ret, metadata_last=0, metadata_type, metadata_size, found_streaminfo=0;
@@ -166,7 +38,7 @@ static int flac_read_header(AVFormatContext *s)
return AVERROR(ENOMEM);
st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
st->codec->codec_id = AV_CODEC_ID_FLAC;
- st->need_parsing = AVSTREAM_PARSE_FULL;
+ st->need_parsing = AVSTREAM_PARSE_FULL_RAW;
/* the parameters will be extracted from the compressed bitstream */
/* if fLaC marker is not found, assume there is no header */
@@ -176,7 +48,7 @@ static int flac_read_header(AVFormatContext *s)
}
/* process metadata blocks */
- while (!s->pb->eof_reached && !metadata_last) {
+ while (!url_feof(s->pb) && !metadata_last) {
avio_read(s->pb, header, 4);
avpriv_flac_parse_block_header(header, &metadata_last, &metadata_type,
&metadata_size);
@@ -191,8 +63,7 @@ static int flac_read_header(AVFormatContext *s)
return AVERROR(ENOMEM);
}
if (avio_read(s->pb, buffer, metadata_size) != metadata_size) {
- av_freep(&buffer);
- return AVERROR(EIO);
+ RETURN_ERROR(AVERROR(EIO));
}
break;
/* skip metadata block for unsupported types */
@@ -206,12 +77,10 @@ static int flac_read_header(AVFormatContext *s)
FLACStreaminfo si;
/* STREAMINFO can only occur once */
if (found_streaminfo) {
- av_freep(&buffer);
- return AVERROR_INVALIDDATA;
+ RETURN_ERROR(AVERROR_INVALIDDATA);
}
if (metadata_size != FLAC_STREAMINFO_SIZE) {
- av_freep(&buffer);
- return AVERROR_INVALIDDATA;
+ RETURN_ERROR(AVERROR_INVALIDDATA);
}
found_streaminfo = 1;
st->codec->extradata = buffer;
@@ -233,26 +102,27 @@ static int flac_read_header(AVFormatContext *s)
const uint8_t *offset;
int i, chapters, track, ti;
if (metadata_size < 431)
- return AVERROR_INVALIDDATA;
+ RETURN_ERROR(AVERROR_INVALIDDATA);
offset = buffer + 395;
chapters = bytestream_get_byte(&offset) - 1;
if (chapters <= 0)
- return AVERROR_INVALIDDATA;
+ RETURN_ERROR(AVERROR_INVALIDDATA);
for (i = 0; i < chapters; i++) {
if (offset + 36 - buffer > metadata_size)
- return AVERROR_INVALIDDATA;
+ RETURN_ERROR(AVERROR_INVALIDDATA);
start = bytestream_get_be64(&offset);
track = bytestream_get_byte(&offset);
bytestream_get_buffer(&offset, isrc, 12);
isrc[12] = 0;
offset += 14;
ti = bytestream_get_byte(&offset);
- if (ti <= 0) return AVERROR_INVALIDDATA;
+ if (ti <= 0) RETURN_ERROR(AVERROR_INVALIDDATA);
offset += ti * 12;
avpriv_new_chapter(s, track, st->time_base, start, AV_NOPTS_VALUE, isrc);
}
+ av_freep(&buffer);
} else if (metadata_type == FLAC_METADATA_TYPE_PICTURE) {
- ret = parse_picture(s, buffer, metadata_size);
+ ret = ff_flac_parse_picture(s, buffer, metadata_size);
av_freep(&buffer);
if (ret < 0) {
av_log(s, AV_LOG_ERROR, "Error parsing attached picture.\n");
@@ -261,8 +131,7 @@ static int flac_read_header(AVFormatContext *s)
} else {
/* STREAMINFO must be the first block */
if (!found_streaminfo) {
- av_freep(&buffer);
- return AVERROR_INVALIDDATA;
+ RETURN_ERROR(AVERROR_INVALIDDATA);
}
/* process supported blocks other than STREAMINFO */
if (metadata_type == FLAC_METADATA_TYPE_VORBIS_COMMENT) {
@@ -275,6 +144,10 @@ static int flac_read_header(AVFormatContext *s)
}
return 0;
+
+fail:
+ av_free(buffer);
+ return ret;
}
static int flac_probe(AVProbeData *p)
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-10 05:45:55 +0000