* Beam Software SIFF demuxer
* Copyright (c) 2007 Konstantin Shishkov
*
- * 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/channel_layout.h"
#include "libavutil/intreadwrite.h"
+
#include "avformat.h"
+#include "internal.h"
-enum SIFFTags{
+enum SIFFTags {
TAG_SIFF = MKTAG('S', 'I', 'F', 'F'),
TAG_BODY = MKTAG('B', 'O', 'D', 'Y'),
TAG_VBHD = MKTAG('V', 'B', 'H', 'D'),
TAG_SOUN = MKTAG('S', 'O', 'U', 'N'),
};
-enum VBFlags{
+enum VBFlags {
VB_HAS_GMC = 0x01,
VB_HAS_AUDIO = 0x04,
VB_HAS_VIDEO = 0x08,
VB_HAS_LENGTH = 0x20
};
-typedef struct SIFFContext{
+typedef struct SIFFContext {
int frames;
int cur_frame;
int rate;
int has_audio;
int curstrm;
- int pktsize;
+ unsigned int pktsize;
int gmcsize;
int sndsize;
- int flags;
+ unsigned int flags;
uint8_t gmc[4];
-}SIFFContext;
+} SIFFContext;
static int siff_probe(AVProbeData *p)
{
static int create_audio_stream(AVFormatContext *s, SIFFContext *c)
{
AVStream *ast;
- ast = av_new_stream(s, 0);
+ ast = avformat_new_stream(s, NULL);
if (!ast)
- return -1;
- ast->codec->codec_type = AVMEDIA_TYPE_AUDIO;
- ast->codec->codec_id = CODEC_ID_PCM_U8;
- ast->codec->channels = 1;
- ast->codec->bits_per_coded_sample = c->bits;
- ast->codec->sample_rate = c->rate;
- ast->codec->frame_size = c->block_align;
- av_set_pts_info(ast, 16, 1, c->rate);
+ return AVERROR(ENOMEM);
+ ast->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
+ ast->codecpar->codec_id = AV_CODEC_ID_PCM_U8;
+ ast->codecpar->channels = 1;
+ ast->codecpar->channel_layout = AV_CH_LAYOUT_MONO;
+ ast->codecpar->bits_per_coded_sample = 8;
+ ast->codecpar->sample_rate = c->rate;
+ avpriv_set_pts_info(ast, 16, 1, c->rate);
+ ast->start_time = 0;
return 0;
}
-static int siff_parse_vbv1(AVFormatContext *s, SIFFContext *c, ByteIOContext *pb)
+static int siff_parse_vbv1(AVFormatContext *s, SIFFContext *c, AVIOContext *pb)
{
AVStream *st;
int width, height;
- if (get_le32(pb) != TAG_VBHD){
+ if (avio_rl32(pb) != TAG_VBHD) {
av_log(s, AV_LOG_ERROR, "Header chunk is missing\n");
- return -1;
+ return AVERROR_INVALIDDATA;
}
- if(get_be32(pb) != 32){
+ if (avio_rb32(pb) != 32) {
av_log(s, AV_LOG_ERROR, "Header chunk size is incorrect\n");
- return -1;
+ return AVERROR_INVALIDDATA;
}
- if(get_le16(pb) != 1){
+ if (avio_rl16(pb) != 1) {
av_log(s, AV_LOG_ERROR, "Incorrect header version\n");
- return -1;
+ return AVERROR_INVALIDDATA;
}
- width = get_le16(pb);
- height = get_le16(pb);
- url_fskip(pb, 4);
- c->frames = get_le16(pb);
- if(!c->frames){
+ width = avio_rl16(pb);
+ height = avio_rl16(pb);
+ avio_skip(pb, 4);
+ c->frames = avio_rl16(pb);
+ if (!c->frames) {
av_log(s, AV_LOG_ERROR, "File contains no frames ???\n");
- return -1;
+ return AVERROR_INVALIDDATA;
}
- c->bits = get_le16(pb);
- c->rate = get_le16(pb);
+ c->bits = avio_rl16(pb);
+ c->rate = avio_rl16(pb);
c->block_align = c->rate * (c->bits >> 3);
- url_fskip(pb, 16); //zeroes
+ avio_skip(pb, 16); // zeroes
- st = av_new_stream(s, 0);
+ st = avformat_new_stream(s, NULL);
if (!st)
- return -1;
- st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
- st->codec->codec_id = CODEC_ID_VB;
- st->codec->codec_tag = MKTAG('V', 'B', 'V', '1');
- st->codec->width = width;
- st->codec->height = height;
- st->codec->pix_fmt = PIX_FMT_PAL8;
- av_set_pts_info(st, 16, 1, 12);
+ return AVERROR(ENOMEM);
+ st->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
+ st->codecpar->codec_id = AV_CODEC_ID_VB;
+ st->codecpar->codec_tag = MKTAG('V', 'B', 'V', '1');
+ st->codecpar->width = width;
+ st->codecpar->height = height;
+ st->codecpar->format = AV_PIX_FMT_PAL8;
+ avpriv_set_pts_info(st, 16, 1, 12);
c->cur_frame = 0;
c->has_video = 1;
c->has_audio = !!c->rate;
- c->curstrm = -1;
- if (c->has_audio && create_audio_stream(s, c) < 0)
- return -1;
+ c->curstrm = -1;
+ if (c->has_audio)
+ return create_audio_stream(s, c);
return 0;
}
-static int siff_parse_soun(AVFormatContext *s, SIFFContext *c, ByteIOContext *pb)
+static int siff_parse_soun(AVFormatContext *s, SIFFContext *c, AVIOContext *pb)
{
- if (get_le32(pb) != TAG_SHDR){
+ if (avio_rl32(pb) != TAG_SHDR) {
av_log(s, AV_LOG_ERROR, "Header chunk is missing\n");
- return -1;
+ return AVERROR_INVALIDDATA;
}
- if(get_be32(pb) != 8){
+ if (avio_rb32(pb) != 8) {
av_log(s, AV_LOG_ERROR, "Header chunk size is incorrect\n");
- return -1;
+ return AVERROR_INVALIDDATA;
}
- url_fskip(pb, 4); //unknown value
- c->rate = get_le16(pb);
- c->bits = get_le16(pb);
+ avio_skip(pb, 4); // unknown value
+ c->rate = avio_rl16(pb);
+ c->bits = avio_rl16(pb);
c->block_align = c->rate * (c->bits >> 3);
return create_audio_stream(s, c);
}
-static int siff_read_header(AVFormatContext *s, AVFormatParameters *ap)
+static int siff_read_header(AVFormatContext *s)
{
- ByteIOContext *pb = s->pb;
- SIFFContext *c = s->priv_data;
+ AVIOContext *pb = s->pb;
+ SIFFContext *c = s->priv_data;
uint32_t tag;
+ int ret;
- if (get_le32(pb) != TAG_SIFF)
- return -1;
- url_fskip(pb, 4); //ignore size
- tag = get_le32(pb);
+ if (avio_rl32(pb) != TAG_SIFF)
+ return AVERROR_INVALIDDATA;
+ avio_skip(pb, 4); // ignore size
+ tag = avio_rl32(pb);
- if (tag != TAG_VBV1 && tag != TAG_SOUN){
+ if (tag != TAG_VBV1 && tag != TAG_SOUN) {
av_log(s, AV_LOG_ERROR, "Not a VBV file\n");
- return -1;
+ return AVERROR_INVALIDDATA;
}
- if (tag == TAG_VBV1 && siff_parse_vbv1(s, c, pb) < 0)
- return -1;
- if (tag == TAG_SOUN && siff_parse_soun(s, c, pb) < 0)
- return -1;
- if (get_le32(pb) != MKTAG('B', 'O', 'D', 'Y')){
+ if (tag == TAG_VBV1 && (ret = siff_parse_vbv1(s, c, pb)) < 0)
+ return ret;
+ if (tag == TAG_SOUN && (ret = siff_parse_soun(s, c, pb)) < 0)
+ return ret;
+ if (avio_rl32(pb) != MKTAG('B', 'O', 'D', 'Y')) {
av_log(s, AV_LOG_ERROR, "'BODY' chunk is missing\n");
- return -1;
+ return AVERROR_INVALIDDATA;
}
- url_fskip(pb, 4); //ignore size
+ avio_skip(pb, 4); // ignore size
return 0;
}
static int siff_read_packet(AVFormatContext *s, AVPacket *pkt)
{
SIFFContext *c = s->priv_data;
- int size;
- if (c->has_video){
+ if (c->has_video) {
+ unsigned int size;
if (c->cur_frame >= c->frames)
return AVERROR(EIO);
- if (c->curstrm == -1){
- c->pktsize = get_le32(s->pb) - 4;
- c->flags = get_le16(s->pb);
+ if (c->curstrm == -1) {
+ c->pktsize = avio_rl32(s->pb) - 4;
+ c->flags = avio_rl16(s->pb);
c->gmcsize = (c->flags & VB_HAS_GMC) ? 4 : 0;
if (c->gmcsize)
- get_buffer(s->pb, c->gmc, c->gmcsize);
- c->sndsize = (c->flags & VB_HAS_AUDIO) ? get_le32(s->pb): 0;
+ avio_read(s->pb, c->gmc, c->gmcsize);
+ c->sndsize = (c->flags & VB_HAS_AUDIO) ? avio_rl32(s->pb) : 0;
c->curstrm = !!(c->flags & VB_HAS_AUDIO);
}
- if (!c->curstrm){
+ if (!c->curstrm) {
size = c->pktsize - c->sndsize;
if (av_new_packet(pkt, size) < 0)
return AVERROR(ENOMEM);
AV_WL16(pkt->data, c->flags);
if (c->gmcsize)
memcpy(pkt->data + 2, c->gmc, c->gmcsize);
- get_buffer(s->pb, pkt->data + 2 + c->gmcsize, size - c->gmcsize - 2);
+ avio_read(s->pb, pkt->data + 2 + c->gmcsize, size - c->gmcsize - 2);
pkt->stream_index = 0;
- c->curstrm = -1;
- }else{
- if (av_get_packet(s->pb, pkt, c->sndsize - 4) < 0)
+ c->curstrm = -1;
+ } else {
+ int pktsize = av_get_packet(s->pb, pkt, c->sndsize - 4);
+ if (pktsize < 0)
return AVERROR(EIO);
pkt->stream_index = 1;
- c->curstrm = 0;
+ pkt->duration = pktsize;
+ c->curstrm = 0;
}
- if(!c->cur_frame || c->curstrm)
- pkt->flags |= PKT_FLAG_KEY;
+ if (!c->cur_frame || c->curstrm)
+ pkt->flags |= AV_PKT_FLAG_KEY;
if (c->curstrm == -1)
c->cur_frame++;
- }else{
- size = av_get_packet(s->pb, pkt, c->block_align);
- if(size <= 0)
+ } else {
+ int pktsize = av_get_packet(s->pb, pkt, c->block_align);
+ if (pktsize <= 0)
return AVERROR(EIO);
+ pkt->duration = pktsize;
}
return pkt->size;
}
-AVInputFormat siff_demuxer = {
- "siff",
- NULL_IF_CONFIG_SMALL("Beam Software SIFF"),
- sizeof(SIFFContext),
- siff_probe,
- siff_read_header,
- siff_read_packet,
- .extensions = "vb,son"
+AVInputFormat ff_siff_demuxer = {
+ .name = "siff",
+ .long_name = NULL_IF_CONFIG_SMALL("Beam Software SIFF"),
+ .priv_data_size = sizeof(SIFFContext),
+ .read_probe = siff_probe,
+ .read_header = siff_read_header,
+ .read_packet = siff_read_packet,
+ .extensions = "vb,son",
};
projects / ffmpeg / blobdiff