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Diffstat (limited to 'ffmpeg/libavformat/siff.c')
-rw-r--r--ffmpeg/libavformat/siff.c252
1 files changed, 0 insertions, 252 deletions
diff --git a/ffmpeg/libavformat/siff.c b/ffmpeg/libavformat/siff.c
deleted file mode 100644
index c8b68ab..0000000
--- a/ffmpeg/libavformat/siff.c
+++ /dev/null
@@ -1,252 +0,0 @@
-/*
- * Beam Software SIFF demuxer
- * Copyright (c) 2007 Konstantin Shishkov
- *
- * This file is part of FFmpeg.
- *
- * 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.
- *
- * 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 FFmpeg; 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"
-#include "avio_internal.h"
-
-enum SIFFTags{
- TAG_SIFF = MKTAG('S', 'I', 'F', 'F'),
- TAG_BODY = MKTAG('B', 'O', 'D', 'Y'),
- TAG_VBHD = MKTAG('V', 'B', 'H', 'D'),
- TAG_SHDR = MKTAG('S', 'H', 'D', 'R'),
- TAG_VBV1 = MKTAG('V', 'B', 'V', '1'),
- TAG_SOUN = MKTAG('S', 'O', 'U', 'N'),
-};
-
-enum VBFlags{
- VB_HAS_GMC = 0x01,
- VB_HAS_AUDIO = 0x04,
- VB_HAS_VIDEO = 0x08,
- VB_HAS_PALETTE = 0x10,
- VB_HAS_LENGTH = 0x20
-};
-
-typedef struct SIFFContext{
- int frames;
- int cur_frame;
- int rate;
- int bits;
- int block_align;
-
- int has_video;
- int has_audio;
-
- int curstrm;
- int pktsize;
- int gmcsize;
- int sndsize;
-
- int flags;
- uint8_t gmc[4];
-}SIFFContext;
-
-static int siff_probe(AVProbeData *p)
-{
- uint32_t tag = AV_RL32(p->buf + 8);
- /* check file header */
- if (AV_RL32(p->buf) != TAG_SIFF ||
- (tag != TAG_VBV1 && tag != TAG_SOUN))
- return 0;
- return AVPROBE_SCORE_MAX;
-}
-
-static int create_audio_stream(AVFormatContext *s, SIFFContext *c)
-{
- AVStream *ast;
- ast = avformat_new_stream(s, NULL);
- if (!ast)
- return AVERROR(ENOMEM);
- ast->codec->codec_type = AVMEDIA_TYPE_AUDIO;
- ast->codec->codec_id = AV_CODEC_ID_PCM_U8;
- ast->codec->channels = 1;
- ast->codec->channel_layout = AV_CH_LAYOUT_MONO;
- ast->codec->bits_per_coded_sample = 8;
- ast->codec->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, AVIOContext *pb)
-{
- AVStream *st;
- int width, height;
-
- if (avio_rl32(pb) != TAG_VBHD){
- av_log(s, AV_LOG_ERROR, "Header chunk is missing\n");
- return AVERROR_INVALIDDATA;
- }
- if(avio_rb32(pb) != 32){
- av_log(s, AV_LOG_ERROR, "Header chunk size is incorrect\n");
- return AVERROR_INVALIDDATA;
- }
- if(avio_rl16(pb) != 1){
- av_log(s, AV_LOG_ERROR, "Incorrect header version\n");
- return AVERROR_INVALIDDATA;
- }
- 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 AVERROR_INVALIDDATA;
- }
- c->bits = avio_rl16(pb);
- c->rate = avio_rl16(pb);
- c->block_align = c->rate * (c->bits >> 3);
-
- avio_skip(pb, 16); //zeroes
-
- st = avformat_new_stream(s, NULL);
- if (!st)
- return AVERROR(ENOMEM);
- st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
- st->codec->codec_id = AV_CODEC_ID_VB;
- st->codec->codec_tag = MKTAG('V', 'B', 'V', '1');
- st->codec->width = width;
- st->codec->height = height;
- st->codec->pix_fmt = AV_PIX_FMT_PAL8;
- st->nb_frames =
- st->duration = c->frames;
- 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 AVERROR(ENOMEM);
- return 0;
-}
-
-static int siff_parse_soun(AVFormatContext *s, SIFFContext *c, AVIOContext *pb)
-{
- if (avio_rl32(pb) != TAG_SHDR){
- av_log(s, AV_LOG_ERROR, "Header chunk is missing\n");
- return AVERROR_INVALIDDATA;
- }
- if(avio_rb32(pb) != 8){
- av_log(s, AV_LOG_ERROR, "Header chunk size is incorrect\n");
- return AVERROR_INVALIDDATA;
- }
- 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)
-{
- AVIOContext *pb = s->pb;
- SIFFContext *c = s->priv_data;
- uint32_t tag;
- int ret;
-
- 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){
- av_log(s, AV_LOG_ERROR, "Not a VBV file\n");
- return AVERROR_INVALIDDATA;
- }
-
- 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 AVERROR_INVALIDDATA;
- }
- 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->cur_frame >= c->frames)
- return AVERROR_EOF;
- 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)
- 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){
- size = c->pktsize - c->sndsize - c->gmcsize - 2;
- size = ffio_limit(s->pb, size);
- if(size < 0 || c->pktsize < c->sndsize)
- return AVERROR_INVALIDDATA;
- if (av_new_packet(pkt, size + c->gmcsize + 2) < 0)
- return AVERROR(ENOMEM);
- AV_WL16(pkt->data, c->flags);
- if (c->gmcsize)
- memcpy(pkt->data + 2, c->gmc, c->gmcsize);
- avio_read(s->pb, pkt->data + 2 + c->gmcsize, size);
- pkt->stream_index = 0;
- c->curstrm = -1;
- }else{
- if ((size = av_get_packet(s->pb, pkt, c->sndsize - 4)) < 0)
- return AVERROR(EIO);
- pkt->stream_index = 1;
- pkt->duration = size;
- c->curstrm = 0;
- }
- 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)
- return AVERROR_EOF;
- if(size < 0)
- return AVERROR(EIO);
- pkt->duration = size;
- }
- return pkt->size;
-}
-
-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",
-};
generated by cgit v1.2.3 (git 2.39.1) at 2025-12-06 10:09:26 +0000