* 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
*/
static int smacker_read_header(AVFormatContext *s, AVFormatParameters *ap)
{
- ByteIOContext *pb = s->pb;
+ AVIOContext *pb = s->pb;
SmackerContext *smk = s->priv_data;
AVStream *st, *ast[7];
int i, ret;
int tbase;
/* read and check header */
- smk->magic = get_le32(pb);
+ smk->magic = avio_rl32(pb);
if (smk->magic != MKTAG('S', 'M', 'K', '2') && smk->magic != MKTAG('S', 'M', 'K', '4'))
return -1;
- smk->width = get_le32(pb);
- smk->height = get_le32(pb);
- smk->frames = get_le32(pb);
- smk->pts_inc = (int32_t)get_le32(pb);
- smk->flags = get_le32(pb);
+ smk->width = avio_rl32(pb);
+ smk->height = avio_rl32(pb);
+ smk->frames = avio_rl32(pb);
+ smk->pts_inc = (int32_t)avio_rl32(pb);
+ smk->flags = avio_rl32(pb);
if(smk->flags & SMACKER_FLAG_RING_FRAME)
smk->frames++;
for(i = 0; i < 7; i++)
- smk->audio[i] = get_le32(pb);
- smk->treesize = get_le32(pb);
+ smk->audio[i] = avio_rl32(pb);
+ smk->treesize = avio_rl32(pb);
if(smk->treesize >= UINT_MAX/4){ // smk->treesize + 16 must not overflow (this check is probably redundant)
av_log(s, AV_LOG_ERROR, "treesize too large\n");
}
//FIXME remove extradata "rebuilding"
- smk->mmap_size = get_le32(pb);
- smk->mclr_size = get_le32(pb);
- smk->full_size = get_le32(pb);
- smk->type_size = get_le32(pb);
+ smk->mmap_size = avio_rl32(pb);
+ 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] = get_le32(pb);
- smk->pad = get_le32(pb);
+ smk->rates[i] = avio_rl32(pb);
+ smk->pad = avio_rl32(pb);
/* setup data */
if(smk->frames > 0xFFFFFF) {
av_log(s, AV_LOG_ERROR, "Too many frames: %i\n", smk->frames);
/* read frame info */
for(i = 0; i < smk->frames; i++) {
- smk->frm_size[i] = get_le32(pb);
+ smk->frm_size[i] = avio_rl32(pb);
}
for(i = 0; i < smk->frames; i++) {
- smk->frm_flags[i] = get_byte(pb);
+ smk->frm_flags[i] = avio_r8(pb);
}
/* init video codec */
av_free(smk->frm_flags);
return -1;
}
- ret = get_buffer(pb, st->codec->extradata + 16, st->codec->extradata_size - 16);
+ ret = avio_read(pb, st->codec->extradata + 16, st->codec->extradata_size - 16);
if(ret != st->codec->extradata_size - 16){
av_free(smk->frm_size);
av_free(smk->frm_flags);
((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 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 */
if(smk->curstream < 0) {
- url_fseek(s->pb, smk->nextpos, 0);
+ avio_seek(s->pb, smk->nextpos, 0);
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);
+ pos = avio_tell(s->pb);
if(flags & SMACKER_PAL){
int size, sz, t, off, j, pos;
uint8_t *pal = smk->pal;
uint8_t oldpal[768];
memcpy(oldpal, pal, 768);
- size = get_byte(s->pb);
+ size = avio_r8(s->pb);
size = size * 4 - 1;
frame_size -= size;
frame_size--;
sz = 0;
- pos = url_ftell(s->pb) + size;
+ pos = avio_tell(s->pb) + size;
while(sz < 256){
- t = get_byte(s->pb);
+ 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 = get_byte(s->pb) * 3;
+ off = avio_r8(s->pb) * 3;
j = (t & 0x3F) + 1;
while(j-- && sz < 256) {
*pal++ = oldpal[off + 0];
}
} else { /* new entries */
*pal++ = smk_pal[t];
- *pal++ = smk_pal[get_byte(s->pb) & 0x3F];
- *pal++ = smk_pal[get_byte(s->pb) & 0x3F];
+ *pal++ = smk_pal[avio_r8(s->pb) & 0x3F];
+ *pal++ = smk_pal[avio_r8(s->pb) & 0x3F];
sz++;
}
}
- url_fseek(s->pb, pos, 0);
+ avio_seek(s->pb, pos, 0);
palchange |= 1;
}
flags >>= 1;
for(i = 0; i < 7; i++) {
if(flags & 1) {
int size;
- size = get_le32(s->pb) - 4;
+ 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);
smk->buf_sizes[smk->curstream] = size;
- ret = get_buffer(s->pb, smk->bufs[smk->curstream], size);
+ ret = avio_read(s->pb, smk->bufs[smk->curstream], size);
if(ret != size)
return AVERROR(EIO);
smk->stream_id[smk->curstream] = smk->indexes[i];
palchange |= 2;
pkt->data[0] = palchange;
memcpy(pkt->data + 1, smk->pal, 768);
- ret = get_buffer(s->pb, pkt->data + 769, frame_size);
+ ret = avio_read(s->pb, pkt->data + 769, frame_size);
if(ret != frame_size)
return AVERROR(EIO);
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);
int i;
for(i = 0; i < 7; i++)
- if(smk->bufs[i])
- av_free(smk->bufs[i]);
- if(smk->frm_size)
- av_free(smk->frm_size);
- if(smk->frm_flags)
- av_free(smk->frm_flags);
+ av_free(smk->bufs[i]);
+ av_free(smk->frm_size);
+ av_free(smk->frm_flags);
return 0;
}