* Copyright (c) 2004-2006 Michael Niedermayer
* Copyright (c) 2003 Alex Beregszaszi
*
- * 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/avstring.h"
#include "libavutil/bswap.h"
#include "libavutil/tree.h"
+#include "avio_internal.h"
#include "nut.h"
#undef NDEBUG
#endif
static int get_str(AVIOContext *bc, char *string, unsigned int maxlen){
- unsigned int len= ff_get_v(bc);
+ unsigned int len= ffio_read_varlen(bc);
if(len && maxlen)
avio_read(bc, string, FFMIN(len, maxlen));
}
static int64_t get_s(AVIOContext *bc){
- int64_t v = ff_get_v(bc) + 1;
+ int64_t v = ffio_read_varlen(bc) + 1;
if (v&1) return -(v>>1);
else return (v>>1);
}
static uint64_t get_fourcc(AVIOContext *bc){
- unsigned int len= ff_get_v(bc);
+ unsigned int len= ffio_read_varlen(bc);
if (len==2) return avio_rl16(bc);
else if(len==4) return avio_rl32(bc);
#ifdef TRACE
static inline uint64_t get_v_trace(AVIOContext *bc, char *file, char *func, int line){
- uint64_t v= ff_get_v(bc);
+ uint64_t v= ffio_read_varlen(bc);
av_log(NULL, AV_LOG_DEBUG, "get_v %5"PRId64" / %"PRIX64" in %s %s:%d\n", v, v, file, func, line);
return v;
av_log(NULL, AV_LOG_DEBUG, "get_vb %5"PRId64" / %"PRIX64" in %s %s:%d\n", v, v, file, func, line);
return v;
}
-#define ff_get_v(bc) get_v_trace(bc, __FILE__, __PRETTY_FUNCTION__, __LINE__)
+#define ffio_read_varlen(bc) get_v_trace(bc, __FILE__, __PRETTY_FUNCTION__, __LINE__)
#define get_s(bc) get_s_trace(bc, __FILE__, __PRETTY_FUNCTION__, __LINE__)
#define get_vb(bc) get_vb_trace(bc, __FILE__, __PRETTY_FUNCTION__, __LINE__)
#endif
startcode= ff_crc04C11DB7_update(0, (uint8_t*)&startcode, 8);
init_checksum(bc, ff_crc04C11DB7_update, startcode);
- size= ff_get_v(bc);
+ size= ffio_read_varlen(bc);
if(size > 4096)
avio_rb32(bc);
if(get_checksum(bc) && size > 4096)
if(pos >= 0)
avio_seek(bc, pos, SEEK_SET); //note, this may fail if the stream is not seekable, but that should not matter, as in this case we simply start where we currently are
- while(!url_feof(bc)){
+ while(!bc->eof_reached){
state= (state<<8) | avio_r8(bc);
if((state>>56) != 'N')
continue;
}
#define GET_V(dst, check) \
- tmp= ff_get_v(bc);\
+ tmp= ffio_read_varlen(bc);\
if(!(check)){\
av_log(s, AV_LOG_ERROR, "Error " #dst " is (%"PRId64")\n", tmp);\
return -1;\
GET_V(tmp , tmp >=2 && tmp <= 3)
GET_V(stream_count , tmp > 0 && tmp <= NUT_MAX_STREAMS)
- nut->max_distance = ff_get_v(bc);
+ nut->max_distance = ffio_read_varlen(bc);
if(nut->max_distance > 65536){
av_log(s, AV_LOG_DEBUG, "max_distance %d\n", nut->max_distance);
nut->max_distance= 65536;
tmp_match= 1-(1LL<<62);
tmp_head_idx= 0;
for(i=0; i<256;){
- int tmp_flags = ff_get_v(bc);
- int tmp_fields= ff_get_v(bc);
+ int tmp_flags = ffio_read_varlen(bc);
+ int tmp_fields= ffio_read_varlen(bc);
if(tmp_fields>0) tmp_pts = get_s(bc);
- if(tmp_fields>1) tmp_mul = ff_get_v(bc);
- if(tmp_fields>2) tmp_stream= ff_get_v(bc);
- if(tmp_fields>3) tmp_size = ff_get_v(bc);
+ if(tmp_fields>1) tmp_mul = ffio_read_varlen(bc);
+ if(tmp_fields>2) tmp_stream= ffio_read_varlen(bc);
+ if(tmp_fields>3) tmp_size = ffio_read_varlen(bc);
else tmp_size = 0;
- if(tmp_fields>4) tmp_res = ff_get_v(bc);
+ if(tmp_fields>4) tmp_res = ffio_read_varlen(bc);
else tmp_res = 0;
- if(tmp_fields>5) count = ff_get_v(bc);
+ if(tmp_fields>5) count = ffio_read_varlen(bc);
else count = tmp_mul - tmp_size;
if(tmp_fields>6) tmp_match = get_s(bc);
- if(tmp_fields>7) tmp_head_idx= ff_get_v(bc);
+ if(tmp_fields>7) tmp_head_idx= ffio_read_varlen(bc);
while(tmp_fields-- > 8)
- ff_get_v(bc);
+ ffio_read_varlen(bc);
if(count == 0 || i+count > 256){
av_log(s, AV_LOG_ERROR, "illegal count %d at %d\n", count, i);
if (!st)
return AVERROR(ENOMEM);
- class = ff_get_v(bc);
+ class = ffio_read_varlen(bc);
tmp = get_fourcc(bc);
st->codec->codec_tag= tmp;
switch(class)
GET_V(stc->time_base_id , tmp < nut->time_base_count);
GET_V(stc->msb_pts_shift , tmp < 16);
- stc->max_pts_distance= ff_get_v(bc);
+ stc->max_pts_distance= ffio_read_varlen(bc);
GET_V(stc->decode_delay , tmp < 1000); //sanity limit, raise this if Moore's law is true
st->codec->has_b_frames= stc->decode_delay;
- ff_get_v(bc); //stream flags
+ ffio_read_varlen(bc); //stream flags
GET_V(st->codec->extradata_size, tmp < (1<<30));
if(st->codec->extradata_size){
if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO){
GET_V(st->codec->width , tmp > 0)
GET_V(st->codec->height, tmp > 0)
- st->sample_aspect_ratio.num= ff_get_v(bc);
- st->sample_aspect_ratio.den= ff_get_v(bc);
+ st->sample_aspect_ratio.num= ffio_read_varlen(bc);
+ st->sample_aspect_ratio.den= ffio_read_varlen(bc);
if((!st->sample_aspect_ratio.num) != (!st->sample_aspect_ratio.den)){
av_log(s, AV_LOG_ERROR, "invalid aspect ratio %d/%d\n", st->sample_aspect_ratio.num, st->sample_aspect_ratio.den);
return -1;
}
- ff_get_v(bc); /* csp type */
+ ffio_read_varlen(bc); /* csp type */
}else if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO){
GET_V(st->codec->sample_rate , tmp > 0)
- ff_get_v(bc); // samplerate_den
+ ffio_read_varlen(bc); // samplerate_den
GET_V(st->codec->channels, tmp > 0)
}
if(skip_reserved(bc, end) || get_checksum(bc)){
GET_V(stream_id_plus1, tmp <= s->nb_streams)
chapter_id = get_s(bc);
- chapter_start= ff_get_v(bc);
- chapter_len = ff_get_v(bc);
- count = ff_get_v(bc);
+ chapter_start= ffio_read_varlen(bc);
+ chapter_len = ffio_read_varlen(bc);
+ count = ffio_read_varlen(bc);
if(chapter_id && !stream_id_plus1){
int64_t start= chapter_start / nut->time_base_count;
value= get_s(bc);
}else if(value == -4){
type= "t";
- value= ff_get_v(bc);
+ value= ffio_read_varlen(bc);
}else if(value < -4){
type= "r";
get_s(bc);
end= get_packetheader(nut, bc, 1, SYNCPOINT_STARTCODE);
end += avio_tell(bc);
- tmp= ff_get_v(bc);
- *back_ptr= nut->last_syncpoint_pos - 16*ff_get_v(bc);
+ tmp= ffio_read_varlen(bc);
+ *back_ptr= nut->last_syncpoint_pos - 16*ffio_read_varlen(bc);
if(*back_ptr < 0)
return -1;
end= get_packetheader(nut, bc, 1, INDEX_STARTCODE);
end += avio_tell(bc);
- ff_get_v(bc); //max_pts
+ ffio_read_varlen(bc); //max_pts
GET_V(syncpoint_count, tmp < INT_MAX/8 && tmp > 0)
syncpoints= av_malloc(sizeof(int64_t)*syncpoint_count);
has_keyframe= av_malloc(sizeof(int8_t)*(syncpoint_count+1));
for(i=0; i<syncpoint_count; i++){
- syncpoints[i] = ff_get_v(bc);
+ syncpoints[i] = ffio_read_varlen(bc);
if(syncpoints[i] <= 0)
goto fail;
if(i)
for(i=0; i<s->nb_streams; i++){
int64_t last_pts= -1;
for(j=0; j<syncpoint_count;){
- uint64_t x= ff_get_v(bc);
+ uint64_t x= ffio_read_varlen(bc);
int type= x&1;
int n= j;
x>>=1;
assert(n<=syncpoint_count+1);
for(; j<n && j<syncpoint_count; j++){
if(has_keyframe[j]){
- uint64_t B, A= ff_get_v(bc);
+ uint64_t B, A= ffio_read_varlen(bc);
if(!A){
- A= ff_get_v(bc);
- B= ff_get_v(bc);
+ A= ffio_read_varlen(bc);
+ B= ffio_read_varlen(bc);
//eor_pts[j][i] = last_pts + A + B
}else
B= 0;
if(flags & FLAG_INVALID)
return AVERROR_INVALIDDATA;
if(flags & FLAG_CODED)
- flags ^= ff_get_v(bc);
+ flags ^= ffio_read_varlen(bc);
if(flags & FLAG_STREAM_ID){
GET_V(*stream_id, tmp < s->nb_streams)
}
stc= &nut->stream[*stream_id];
if(flags&FLAG_CODED_PTS){
- int coded_pts= ff_get_v(bc);
+ int coded_pts= ffio_read_varlen(bc);
//FIXME check last_pts validity?
if(coded_pts < (1<<stc->msb_pts_shift)){
*pts=ff_lsb2full(stc, coded_pts);
}else
*pts= stc->last_pts + pts_delta;
if(flags&FLAG_SIZE_MSB){
- size += size_mul*ff_get_v(bc);
+ size += size_mul*ffio_read_varlen(bc);
}
if(flags&FLAG_MATCH_TIME)
get_s(bc);
if(flags&FLAG_HEADER_IDX)
- *header_idx= ff_get_v(bc);
+ *header_idx= ffio_read_varlen(bc);
if(flags&FLAG_RESERVED)
- reserved_count= ff_get_v(bc);
+ reserved_count= ffio_read_varlen(bc);
for(i=0; i<reserved_count; i++)
- ff_get_v(bc);
+ ffio_read_varlen(bc);
if(*header_idx >= (unsigned)nut->header_count){
av_log(s, AV_LOG_ERROR, "header_idx invalid\n");
||(discard >= AVDISCARD_BIDIR && last_IP_pts != AV_NOPTS_VALUE && last_IP_pts > pts)
|| discard >= AVDISCARD_ALL
|| stc->skip_until_key_frame){
- avio_seek(bc, size, SEEK_CUR);
+ avio_skip(bc, size);
return 1;
}
pos-=8;
}else{
frame_code = avio_r8(bc);
- if(url_feof(bc))
+ if(bc->eof_reached)
return -1;
if(frame_code == 'N'){
tmp= frame_code;
case STREAM_STARTCODE:
case INDEX_STARTCODE:
skip= get_packetheader(nut, bc, 0, tmp);
- avio_seek(bc, skip, SEEK_CUR);
+ avio_skip(bc, skip);
break;
case INFO_STARTCODE:
if(decode_info_header(nut)<0)
projects / ffmpeg / blobdiff