* Creative Voice File demuxer.
* Copyright (c) 2006 Aurelien Jacobs <aurel@gnuage.org>
*
- * 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
*/
return AVPROBE_SCORE_MAX;
}
-static int voc_read_header(AVFormatContext *s, AVFormatParameters *ap)
+static int voc_read_header(AVFormatContext *s)
{
VocDecContext *voc = s->priv_data;
- ByteIOContext *pb = s->pb;
+ AVIOContext *pb = s->pb;
int header_size;
AVStream *st;
- url_fskip(pb, 20);
- header_size = get_le16(pb) - 22;
+ avio_skip(pb, 20);
+ header_size = avio_rl16(pb) - 22;
if (header_size != 4) {
av_log(s, AV_LOG_ERROR, "unknown header size: %d\n", header_size);
return AVERROR(ENOSYS);
}
- url_fskip(pb, header_size);
- st = av_new_stream(s, 0);
+ avio_skip(pb, header_size);
+ st = avformat_new_stream(s, NULL);
if (!st)
return AVERROR(ENOMEM);
st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
}
int
-voc_get_packet(AVFormatContext *s, AVPacket *pkt, AVStream *st, int max_size)
+ff_voc_get_packet(AVFormatContext *s, AVPacket *pkt, AVStream *st, int max_size)
{
VocDecContext *voc = s->priv_data;
AVCodecContext *dec = st->codec;
- ByteIOContext *pb = s->pb;
+ AVIOContext *pb = s->pb;
VocType type;
int size, tmp_codec=-1;
int sample_rate = 0;
int channels = 1;
while (!voc->remaining_size) {
- type = get_byte(pb);
+ type = avio_r8(pb);
if (type == VOC_TYPE_EOF)
return AVERROR(EIO);
- voc->remaining_size = get_le24(pb);
+ voc->remaining_size = avio_rl24(pb);
if (!voc->remaining_size) {
- if (url_is_streamed(s->pb))
+ if (!s->pb->seekable)
return AVERROR(EIO);
- voc->remaining_size = url_fsize(pb) - url_ftell(pb);
+ voc->remaining_size = avio_size(pb) - avio_tell(pb);
}
max_size -= 4;
switch (type) {
case VOC_TYPE_VOICE_DATA:
- dec->sample_rate = 1000000 / (256 - get_byte(pb));
- if (sample_rate)
- dec->sample_rate = sample_rate;
- dec->channels = channels;
- tmp_codec = get_byte(pb);
- dec->bits_per_coded_sample = av_get_bits_per_sample(dec->codec_id);
+ if (!dec->sample_rate) {
+ dec->sample_rate = 1000000 / (256 - avio_r8(pb));
+ if (sample_rate)
+ dec->sample_rate = sample_rate;
+ avpriv_set_pts_info(st, 64, 1, dec->sample_rate);
+ dec->channels = channels;
+ dec->bits_per_coded_sample = av_get_bits_per_sample(dec->codec_id);
+ } else
+ avio_skip(pb, 1);
+ tmp_codec = avio_r8(pb);
voc->remaining_size -= 2;
max_size -= 2;
channels = 1;
break;
case VOC_TYPE_EXTENDED:
- sample_rate = get_le16(pb);
- get_byte(pb);
- channels = get_byte(pb) + 1;
+ sample_rate = avio_rl16(pb);
+ avio_r8(pb);
+ channels = avio_r8(pb) + 1;
sample_rate = 256000000 / (channels * (65536 - sample_rate));
voc->remaining_size = 0;
max_size -= 4;
break;
case VOC_TYPE_NEW_VOICE_DATA:
- dec->sample_rate = get_le32(pb);
- dec->bits_per_coded_sample = get_byte(pb);
- dec->channels = get_byte(pb);
- tmp_codec = get_le16(pb);
- url_fskip(pb, 4);
+ if (!dec->sample_rate) {
+ dec->sample_rate = avio_rl32(pb);
+ avpriv_set_pts_info(st, 64, 1, dec->sample_rate);
+ dec->bits_per_coded_sample = avio_r8(pb);
+ dec->channels = avio_r8(pb);
+ } else
+ avio_skip(pb, 6);
+ tmp_codec = avio_rl16(pb);
+ avio_skip(pb, 4);
voc->remaining_size -= 12;
max_size -= 12;
break;
default:
- url_fskip(pb, voc->remaining_size);
+ avio_skip(pb, voc->remaining_size);
max_size -= voc->remaining_size;
voc->remaining_size = 0;
break;
if (tmp_codec >= 0) {
tmp_codec = ff_codec_get_id(ff_voc_codec_tags, tmp_codec);
- if (dec->codec_id == CODEC_ID_NONE)
+ if (dec->codec_id == AV_CODEC_ID_NONE)
dec->codec_id = tmp_codec;
else if (dec->codec_id != tmp_codec)
av_log(s, AV_LOG_WARNING, "Ignoring mid-stream change in audio codec\n");
- if (dec->codec_id == CODEC_ID_NONE) {
- if (s->audio_codec_id == CODEC_ID_NONE) {
+ if (dec->codec_id == AV_CODEC_ID_NONE) {
+ if (s->audio_codec_id == AV_CODEC_ID_NONE) {
av_log(s, AV_LOG_ERROR, "unknown codec tag\n");
return AVERROR(EINVAL);
}
static int voc_read_packet(AVFormatContext *s, AVPacket *pkt)
{
- return voc_get_packet(s, pkt, s->streams[0], 0);
+ return ff_voc_get_packet(s, pkt, s->streams[0], 0);
}
-AVInputFormat voc_demuxer = {
- "voc",
- NULL_IF_CONFIG_SMALL("Creative Voice file format"),
- sizeof(VocDecContext),
- voc_probe,
- voc_read_header,
- voc_read_packet,
- .codec_tag=(const AVCodecTag* const []){ff_voc_codec_tags, 0},
+AVInputFormat ff_voc_demuxer = {
+ .name = "voc",
+ .long_name = NULL_IF_CONFIG_SMALL("Creative Voice"),
+ .priv_data_size = sizeof(VocDecContext),
+ .read_probe = voc_probe,
+ .read_header = voc_read_header,
+ .read_packet = voc_read_packet,
+ .codec_tag = (const AVCodecTag* const []){ ff_voc_codec_tags, 0 },
};