* Smacker demuxer
* Copyright (c) 2006 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/bswap.h"
#include "libavutil/intreadwrite.h"
#include "avformat.h"
+#include "internal.h"
#define SMACKER_PAL 0x01
#define SMACKER_FLAG_RING_FRAME 0x01
enum SAudFlags {
- SMK_AUD_PACKED = 0x80000000,
- SMK_AUD_16BITS = 0x20000000,
- SMK_AUD_STEREO = 0x10000000,
- SMK_AUD_BINKAUD = 0x08000000,
- SMK_AUD_USEDCT = 0x04000000
+ SMK_AUD_PACKED = 0x80,
+ SMK_AUD_16BITS = 0x20,
+ SMK_AUD_STEREO = 0x10,
+ SMK_AUD_BINKAUD = 0x08,
+ SMK_AUD_USEDCT = 0x04
};
typedef struct SmackerContext {
uint32_t audio[7];
uint32_t treesize;
uint32_t mmap_size, mclr_size, full_size, type_size;
+ uint8_t aflags[7];
uint32_t rates[7];
uint32_t pad;
/* frame info */
return 0;
}
-static int smacker_read_header(AVFormatContext *s, AVFormatParameters *ap)
+static int smacker_read_header(AVFormatContext *s)
{
AVIOContext *pb = s->pb;
SmackerContext *smk = s->priv_data;
smk->mclr_size = avio_rl32(pb);
smk->full_size = avio_rl32(pb);
smk->type_size = avio_rl32(pb);
- for(i = 0; i < 7; i++)
- smk->rates[i] = avio_rl32(pb);
+ for(i = 0; i < 7; i++) {
+ smk->rates[i] = avio_rl24(pb);
+ smk->aflags[i] = avio_r8(pb);
+ }
smk->pad = avio_rl32(pb);
/* setup data */
if(smk->frames > 0xFFFFFF) {
}
/* init video codec */
- st = av_new_stream(s, 0);
+ st = avformat_new_stream(s, NULL);
if (!st)
return -1;
smk->videoindex = st->index;
st->codec->height = smk->height;
st->codec->pix_fmt = PIX_FMT_PAL8;
st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
- st->codec->codec_id = CODEC_ID_SMACKVIDEO;
+ st->codec->codec_id = AV_CODEC_ID_SMACKVIDEO;
st->codec->codec_tag = smk->magic;
/* Smacker uses 100000 as internal timebase */
if(smk->pts_inc < 0)
smk->pts_inc *= 100;
tbase = 100000;
av_reduce(&tbase, &smk->pts_inc, tbase, smk->pts_inc, (1UL<<31)-1);
- av_set_pts_info(st, 33, smk->pts_inc, tbase);
+ avpriv_set_pts_info(st, 33, smk->pts_inc, tbase);
st->duration = smk->frames;
/* handle possible audio streams */
for(i = 0; i < 7; i++) {
smk->indexes[i] = -1;
- if(smk->rates[i] & 0xFFFFFF){
- ast[i] = av_new_stream(s, 0);
+ if (smk->rates[i]) {
+ ast[i] = avformat_new_stream(s, NULL);
smk->indexes[i] = ast[i]->index;
ast[i]->codec->codec_type = AVMEDIA_TYPE_AUDIO;
- if (smk->rates[i] & SMK_AUD_BINKAUD) {
- ast[i]->codec->codec_id = CODEC_ID_BINKAUDIO_RDFT;
- } else if (smk->rates[i] & SMK_AUD_USEDCT) {
- ast[i]->codec->codec_id = CODEC_ID_BINKAUDIO_DCT;
- } else if (smk->rates[i] & SMK_AUD_PACKED){
- ast[i]->codec->codec_id = CODEC_ID_SMACKAUDIO;
+ if (smk->aflags[i] & SMK_AUD_BINKAUD) {
+ ast[i]->codec->codec_id = AV_CODEC_ID_BINKAUDIO_RDFT;
+ } else if (smk->aflags[i] & SMK_AUD_USEDCT) {
+ ast[i]->codec->codec_id = AV_CODEC_ID_BINKAUDIO_DCT;
+ } else if (smk->aflags[i] & SMK_AUD_PACKED){
+ ast[i]->codec->codec_id = AV_CODEC_ID_SMACKAUDIO;
ast[i]->codec->codec_tag = MKTAG('S', 'M', 'K', 'A');
} else {
- ast[i]->codec->codec_id = CODEC_ID_PCM_U8;
+ ast[i]->codec->codec_id = AV_CODEC_ID_PCM_U8;
}
- ast[i]->codec->channels = (smk->rates[i] & SMK_AUD_STEREO) ? 2 : 1;
- ast[i]->codec->sample_rate = smk->rates[i] & 0xFFFFFF;
- ast[i]->codec->bits_per_coded_sample = (smk->rates[i] & SMK_AUD_16BITS) ? 16 : 8;
- if(ast[i]->codec->bits_per_coded_sample == 16 && ast[i]->codec->codec_id == CODEC_ID_PCM_U8)
- ast[i]->codec->codec_id = CODEC_ID_PCM_S16LE;
- av_set_pts_info(ast[i], 64, 1, ast[i]->codec->sample_rate
+ ast[i]->codec->channels = (smk->aflags[i] & SMK_AUD_STEREO) ? 2 : 1;
+ ast[i]->codec->sample_rate = smk->rates[i];
+ ast[i]->codec->bits_per_coded_sample = (smk->aflags[i] & SMK_AUD_16BITS) ? 16 : 8;
+ if(ast[i]->codec->bits_per_coded_sample == 16 && ast[i]->codec->codec_id == AV_CODEC_ID_PCM_U8)
+ ast[i]->codec->codec_id = AV_CODEC_ID_PCM_S16LE;
+ avpriv_set_pts_info(ast[i], 64, 1, ast[i]->codec->sample_rate
* ast[i]->codec->channels * ast[i]->codec->bits_per_coded_sample / 8);
}
}
((int32_t*)st->codec->extradata)[3] = av_le2ne32(smk->type_size);
smk->curstream = -1;
- smk->nextpos = url_ftell(pb);
+ smk->nextpos = avio_tell(pb);
return 0;
}
int i;
int frame_size = 0;
int palchange = 0;
- int pos;
- if (url_feof(s->pb) || smk->cur_frame >= smk->frames)
+ if (s->pb->eof_reached || smk->cur_frame >= smk->frames)
return AVERROR_EOF;
/* if we demuxed all streams, pass another frame */
frame_size = smk->frm_size[smk->cur_frame] & (~3);
flags = smk->frm_flags[smk->cur_frame];
/* handle palette change event */
- pos = url_ftell(s->pb);
if(flags & SMACKER_PAL){
int size, sz, t, off, j, pos;
uint8_t *pal = smk->pal;
frame_size -= size;
frame_size--;
sz = 0;
- pos = url_ftell(s->pb) + size;
+ pos = avio_tell(s->pb) + size;
while(sz < 256){
t = avio_r8(s->pb);
if(t & 0x80){ /* skip palette entries */
sz += (t & 0x7F) + 1;
pal += ((t & 0x7F) + 1) * 3;
} else if(t & 0x40){ /* copy with offset */
- off = avio_r8(s->pb) * 3;
+ off = avio_r8(s->pb);
j = (t & 0x3F) + 1;
+ if (off + j > 0xff) {
+ av_log(s, AV_LOG_ERROR,
+ "Invalid palette update, offset=%d length=%d extends beyond palette size\n",
+ off, j);
+ return AVERROR_INVALIDDATA;
+ }
+ off *= 3;
while(j-- && sz < 256) {
*pal++ = oldpal[off + 0];
*pal++ = oldpal[off + 1];
for(i = 0; i < 7; i++) {
if(flags & 1) {
int size;
+ uint8_t *tmpbuf;
+
size = avio_rl32(s->pb) - 4;
frame_size -= size;
frame_size -= 4;
smk->curstream++;
- smk->bufs[smk->curstream] = av_realloc(smk->bufs[smk->curstream], size);
+ tmpbuf = av_realloc(smk->bufs[smk->curstream], size);
+ if (!tmpbuf)
+ return AVERROR(ENOMEM);
+ smk->bufs[smk->curstream] = tmpbuf;
smk->buf_sizes[smk->curstream] = size;
ret = avio_read(s->pb, smk->bufs[smk->curstream], size);
if(ret != size)
}
flags >>= 1;
}
- if (av_new_packet(pkt, frame_size + 768))
+ if (frame_size < 0)
+ return AVERROR_INVALIDDATA;
+ if (av_new_packet(pkt, frame_size + 769))
return AVERROR(ENOMEM);
if(smk->frm_size[smk->cur_frame] & 1)
palchange |= 2;
pkt->stream_index = smk->videoindex;
pkt->size = ret + 769;
smk->cur_frame++;
- smk->nextpos = url_ftell(s->pb);
+ smk->nextpos = avio_tell(s->pb);
} else {
if (av_new_packet(pkt, smk->buf_sizes[smk->curstream]))
return AVERROR(ENOMEM);
}
AVInputFormat ff_smacker_demuxer = {
- "smk",
- NULL_IF_CONFIG_SMALL("Smacker video"),
- sizeof(SmackerContext),
- smacker_probe,
- smacker_read_header,
- smacker_read_packet,
- smacker_read_close,
+ .name = "smk",
+ .long_name = NULL_IF_CONFIG_SMALL("Smacker video"),
+ .priv_data_size = sizeof(SmackerContext),
+ .read_probe = smacker_probe,
+ .read_header = smacker_read_header,
+ .read_packet = smacker_read_packet,
+ .read_close = smacker_read_close,
};
projects / ffmpeg / blobdiff