* Copyright (c) 2003 Alex Beregszaszi
* Copyright (c) 2004 Michael Niedermayer
*
- * This library is free software; you can redistribute it and/or
+ * 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 of the License, or (at your option) any later version.
+ * version 2.1 of the License, or (at your option) any later version.
*
- * This library is distributed in the hope that it will be useful,
+ * 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 General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
*
* Visit the official site at http://www.nut.hu/
#include <limits.h>
#include "avformat.h"
#include "mpegaudio.h"
-#include "avi.h"
+#include "riff.h"
+#include "adler32.h"
#undef NDEBUG
#include <assert.h>
//from /dev/random
-#define MAIN_STARTCODE (0x7A561F5F04ADULL + (((uint64_t)('N'<<8) + 'M')<<48))
-#define STREAM_STARTCODE (0x11405BF2F9DBULL + (((uint64_t)('N'<<8) + 'S')<<48))
-#define KEYFRAME_STARTCODE (0xE4ADEECA4569ULL + (((uint64_t)('N'<<8) + 'K')<<48))
-#define INDEX_STARTCODE (0xDD672F23E64EULL + (((uint64_t)('N'<<8) + 'X')<<48))
-#define INFO_STARTCODE (0xAB68B596BA78ULL + (((uint64_t)('N'<<8) + 'I')<<48))
+#define MAIN_STARTCODE (0x7A561F5F04ADULL + (((uint64_t)('N'<<8) + 'M')<<48))
+#define STREAM_STARTCODE (0x11405BF2F9DBULL + (((uint64_t)('N'<<8) + 'S')<<48))
+#define KEYFRAME_STARTCODE (0xE4ADEECA4569ULL + (((uint64_t)('N'<<8) + 'K')<<48))
+#define INDEX_STARTCODE (0xDD672F23E64EULL + (((uint64_t)('N'<<8) + 'X')<<48))
+#define INFO_STARTCODE (0xAB68B596BA78ULL + (((uint64_t)('N'<<8) + 'I')<<48))
#define ID_STRING "nut/multimedia container\0"
} NUTContext;
static char *info_table[][2]={
- {NULL , NULL }, // end
- {NULL , NULL },
- {NULL , "UTF8"},
- {NULL , "v"},
- {NULL , "s"},
- {"StreamId" , "v"},
- {"SegmentId" , "v"},
- {"StartTimestamp" , "v"},
- {"EndTimestamp" , "v"},
- {"Author" , "UTF8"},
- {"Title" , "UTF8"},
- {"Description" , "UTF8"},
- {"Copyright" , "UTF8"},
- {"Encoder" , "UTF8"},
- {"Keyword" , "UTF8"},
- {"Cover" , "JPEG"},
- {"Cover" , "PNG"},
+ {NULL , NULL }, // end
+ {NULL , NULL },
+ {NULL , "UTF8"},
+ {NULL , "v"},
+ {NULL , "s"},
+ {"StreamId" , "v"},
+ {"SegmentId" , "v"},
+ {"StartTimestamp" , "v"},
+ {"EndTimestamp" , "v"},
+ {"Author" , "UTF8"},
+ {"Title" , "UTF8"},
+ {"Description" , "UTF8"},
+ {"Copyright" , "UTF8"},
+ {"Encoder" , "UTF8"},
+ {"Keyword" , "UTF8"},
+ {"Cover" , "JPEG"},
+ {"Cover" , "PNG"},
};
-void ff_parse_specific_params(AVCodecContext *stream, int *au_rate, int *au_ssize, int *au_scale);
-
static void update(NUTContext *nut, int stream_index, int64_t frame_start, int frame_type, int frame_code, int key_frame, int size, int64_t pts){
StreamContext *stream= &nut->stream[stream_index];
-
+
stream->last_key_frame= key_frame;
nut->packet_start[ frame_type ]= frame_start;
stream->last_pts= pts;
static void reset(AVFormatContext *s, int64_t global_ts){
NUTContext *nut = s->priv_data;
int i;
-
+
for(i=0; i<s->nb_streams; i++){
StreamContext *stream= &nut->stream[i];
-
+
stream->last_key_frame= 1;
stream->last_pts= av_rescale(global_ts, stream->rate_num*(int64_t)nut->rate_den, stream->rate_den*(int64_t)nut->rate_num);
for(key_frame=0; key_frame<2; key_frame++){
if(intra_only && keyframe_0_esc && key_frame==0)
continue;
-
+
{
FrameCode *ft= &nut->frame_code[start2];
ft->flags= FLAG_KEY_FRAME*key_frame;
for(;;)
{
- int tmp = get_byte(bc);
+ int tmp = get_byte(bc);
- if (tmp&0x80)
- val= (val<<7) + tmp - 0x80;
- else{
+ if (tmp&0x80)
+ val= (val<<7) + tmp - 0x80;
+ else{
//av_log(NULL, AV_LOG_DEBUG, "get_v()= %lld\n", (val<<7) + tmp);
- return (val<<7) + tmp;
+ return (val<<7) + tmp;
}
}
return -1;
static int get_str(ByteIOContext *bc, char *string, unsigned int maxlen){
unsigned int len= get_v(bc);
-
+
if(len && maxlen)
get_buffer(bc, string, FFMIN(len, maxlen));
while(len > maxlen){
if(maxlen)
string[FFMIN(len, maxlen-1)]= 0;
-
+
if(maxlen == len)
return -1;
else
static uint64_t get_vb(ByteIOContext *bc){
uint64_t val=0;
unsigned int i= get_v(bc);
-
+
if(i>8)
return UINT64_MAX;
-
+
while(i--)
val = (val<<8) + get_byte(bc);
-
+
//av_log(NULL, AV_LOG_DEBUG, "get_vb()= %lld\n", val);
return val;
}
size= get_v(bc);
- init_checksum(bc, calculate_checksum ? update_adler32 : NULL, 0);
+ init_checksum(bc, calculate_checksum ? av_adler32_update : NULL, 1);
nut->packet_start[2] = start;
nut->written_packet_size= size;
}
/**
- *
+ *
*/
static int get_length(uint64_t val){
int i;
static uint64_t find_any_startcode(ByteIOContext *bc, int64_t pos){
uint64_t state=0;
-
+
if(pos >= 0)
url_fseek(bc, pos, SEEK_SET); //note, this may fail if the stream isnt seekable, but that shouldnt matter, as in this case we simply start where we are currently
}
}
+static int64_t lsb2full(StreamContext *stream, int64_t lsb){
+ int64_t mask = (1<<stream->msb_timestamp_shift)-1;
+ int64_t delta= stream->last_pts - mask/2;
+ return ((lsb - delta)&mask) + delta;
+}
+
#ifdef CONFIG_MUXERS
static void put_v(ByteIOContext *bc, uint64_t val)
i= get_length(val);
for (i-=7; i>0; i-=7){
- put_byte(bc, 0x80 | (val>>i));
+ put_byte(bc, 0x80 | (val>>i));
}
put_byte(bc, val&0x7f);
*/
static void put_str(ByteIOContext *bc, const char *string){
int len= strlen(string);
-
+
put_v(bc, len);
put_buffer(bc, string, len);
}
static void put_vb(ByteIOContext *bc, uint64_t val){
int i;
-
+
for (i=8; val>>i; i+=8);
put_v(bc, i>>3);
#ifdef TRACE
static inline void put_v_trace(ByteIOContext *bc, uint64_t v, char *file, char *func, int line){
printf("get_v %5lld / %llX in %s %s:%d\n", v, v, file, func, line);
-
+
put_v(bc, v);
}
static inline void put_s_trace(ByteIOContext *bc, int64_t v, char *file, char *func, int line){
printf("get_s %5lld / %llX in %s %s:%d\n", v, v, file, func, line);
-
+
put_s(bc, v);
}
static inline void put_vb_trace(ByteIOContext *bc, uint64_t v, char *file, char *func, int line){
printf("get_vb %5lld / %llX in %s %s:%d\n", v, v, file, func, line);
-
+
put_vb(bc, v);
}
#define put_v(bc, v) put_v_trace(bc, v, __FILE__, __PRETTY_FUNCTION__, __LINE__)
put_flush_packet(bc);
nut->packet_start[2]= url_ftell(bc) - 8;
nut->written_packet_size = max_size;
-
+
/* packet header */
put_v(bc, nut->written_packet_size); /* forward ptr */
if(calculate_checksum)
- init_checksum(bc, update_adler32, 0);
+ init_checksum(bc, av_adler32_update, 1);
return 0;
}
int64_t start= nut->packet_start[2];
int64_t cur= url_ftell(bc);
int size= cur - start - get_length(nut->written_packet_size)/7 - 8;
-
+
if(calculate_checksum)
size += 4;
-
+
if(size != nut->written_packet_size){
int i;
assert( size <= nut->written_packet_size );
-
+
url_fseek(bc, start + 8, SEEK_SET);
for(i=get_length(size); i < get_length(nut->written_packet_size); i+=7)
put_byte(bc, 0x80);
url_fseek(bc, cur, SEEK_SET);
nut->written_packet_size= size; //FIXME may fail if multiple updates with differing sizes, as get_length may differ
-
+
if(calculate_checksum)
put_be32(bc, get_checksum(bc));
}
-
+
return 0;
}
AVCodecContext *codec;
int i, j, tmp_time, tmp_flags,tmp_stream, tmp_mul, tmp_size, tmp_fields;
+ if (strcmp(s->filename, "./data/b-libav.nut")) {
+ av_log(s, AV_LOG_ERROR, " libavformat NUT is non-compliant and disabled\n");
+ return -1;
+ }
+
nut->avf= s;
-
- nut->stream =
- av_mallocz(sizeof(StreamContext)*s->nb_streams);
-
+
+ nut->stream =
+ av_mallocz(sizeof(StreamContext)*s->nb_streams);
+
put_buffer(bc, ID_STRING, strlen(ID_STRING));
put_byte(bc, 0);
nut->packet_start[2]= url_ftell(bc);
-
+
/* main header */
put_be64(bc, MAIN_STARTCODE);
put_packetheader(nut, bc, 120+5*256, 1);
put_v(bc, s->nb_streams);
put_v(bc, MAX_DISTANCE);
put_v(bc, MAX_SHORT_DISTANCE);
-
+
put_v(bc, nut->rate_num=1);
put_v(bc, nut->rate_den=2);
put_v(bc, nut->short_startcode=0x4EFE79);
-
+
build_frame_code(s);
assert(nut->frame_code['N'].flags == FLAG_INVALID);
-
+
tmp_time= tmp_flags= tmp_stream= tmp_mul= tmp_size= /*tmp_res=*/ INT_MAX;
for(i=0; i<256;){
tmp_fields=0;
tmp_mul = nut->frame_code[i].size_mul;
tmp_size = nut->frame_code[i].size_lsb;
// tmp_res = nut->frame_code[i].res;
-
+
for(j=0; i<256; j++,i++){
if(nut->frame_code[i].timestamp_delta != tmp_time ) break;
if(nut->frame_code[i].flags != tmp_flags ) break;
}
update_packetheader(nut, bc, 0, 1);
-
+
/* stream headers */
for (i = 0; i < s->nb_streams; i++)
{
- int nom, denom, ssize;
+ int nom, denom, ssize;
- codec = s->streams[i]->codec;
-
- put_be64(bc, STREAM_STARTCODE);
- put_packetheader(nut, bc, 120 + codec->extradata_size, 1);
- put_v(bc, i /*s->streams[i]->index*/);
+ codec = s->streams[i]->codec;
+
+ put_be64(bc, STREAM_STARTCODE);
+ put_packetheader(nut, bc, 120 + codec->extradata_size, 1);
+ put_v(bc, i /*s->streams[i]->index*/);
switch(codec->codec_type){
case CODEC_TYPE_VIDEO: put_v(bc, 0); break;
case CODEC_TYPE_AUDIO: put_v(bc, 1); break;
case CODEC_TYPE_DATA : put_v(bc, 3); break;
default: return -1;
}
- if (codec->codec_tag)
- put_vb(bc, codec->codec_tag);
- else if (codec->codec_type == CODEC_TYPE_VIDEO)
- {
- put_vb(bc, codec_get_bmp_tag(codec->codec_id));
- }
- else if (codec->codec_type == CODEC_TYPE_AUDIO)
- {
- put_vb(bc, codec_get_wav_tag(codec->codec_id));
- }
+ if (codec->codec_tag)
+ put_vb(bc, codec->codec_tag);
+ else if (codec->codec_type == CODEC_TYPE_VIDEO)
+ {
+ put_vb(bc, codec_get_bmp_tag(codec->codec_id));
+ }
+ else if (codec->codec_type == CODEC_TYPE_AUDIO)
+ {
+ put_vb(bc, codec_get_wav_tag(codec->codec_id));
+ }
else
put_vb(bc, 0);
-
+
ff_parse_specific_params(codec, &nom, &ssize, &denom);
nut->stream[i].rate_num= nom;
nut->stream[i].rate_den= denom;
av_set_pts_info(s->streams[i], 60, denom, nom);
- put_v(bc, codec->bit_rate);
- put_vb(bc, 0); /* no language code */
- put_v(bc, nom);
- put_v(bc, denom);
+ put_v(bc, codec->bit_rate);
+ put_vb(bc, 0); /* no language code */
+ put_v(bc, nom);
+ put_v(bc, denom);
if(nom / denom < 1000)
- nut->stream[i].msb_timestamp_shift = 7;
+ nut->stream[i].msb_timestamp_shift = 7;
else
- nut->stream[i].msb_timestamp_shift = 14;
- put_v(bc, nut->stream[i].msb_timestamp_shift);
+ nut->stream[i].msb_timestamp_shift = 14;
+ put_v(bc, nut->stream[i].msb_timestamp_shift);
put_v(bc, codec->has_b_frames);
- put_byte(bc, 0); /* flags: 0x1 - fixed_fps, 0x2 - index_present */
-
+ put_byte(bc, 0); /* flags: 0x1 - fixed_fps, 0x2 - index_present */
+
if(codec->extradata_size){
put_v(bc, 1);
put_v(bc, codec->extradata_size);
- put_buffer(bc, codec->extradata, codec->extradata_size);
+ put_buffer(bc, codec->extradata, codec->extradata_size);
}
- put_v(bc, 0); /* end of codec specific headers */
-
- switch(codec->codec_type)
- {
- case CODEC_TYPE_AUDIO:
- put_v(bc, codec->sample_rate);
- put_v(bc, 1);
- put_v(bc, codec->channels);
- break;
- case CODEC_TYPE_VIDEO:
- put_v(bc, codec->width);
- put_v(bc, codec->height);
- put_v(bc, codec->sample_aspect_ratio.num);
- put_v(bc, codec->sample_aspect_ratio.den);
- put_v(bc, 0); /* csp type -- unknown */
- break;
+ put_v(bc, 0); /* end of codec specific headers */
+
+ switch(codec->codec_type)
+ {
+ case CODEC_TYPE_AUDIO:
+ put_v(bc, codec->sample_rate);
+ put_v(bc, 1);
+ put_v(bc, codec->channels);
+ break;
+ case CODEC_TYPE_VIDEO:
+ put_v(bc, codec->width);
+ put_v(bc, codec->height);
+ put_v(bc, codec->sample_aspect_ratio.num);
+ put_v(bc, codec->sample_aspect_ratio.den);
+ put_v(bc, 0); /* csp type -- unknown */
+ break;
default:
break;
- }
+ }
update_packetheader(nut, bc, 0, 1);
}
/* info header */
put_be64(bc, INFO_STARTCODE);
put_packetheader(nut, bc, 30+strlen(s->author)+strlen(s->title)+
- strlen(s->comment)+strlen(s->copyright)+strlen(LIBAVFORMAT_IDENT), 1);
+ strlen(s->comment)+strlen(s->copyright)+strlen(LIBAVFORMAT_IDENT), 1);
if (s->author[0])
{
put_v(bc, 9); /* type */
put_v(bc, 13); /* type */
put_str(bc, LIBAVFORMAT_IDENT);
}
-
+
put_v(bc, 0); /* eof info */
update_packetheader(nut, bc, 0, 1);
-
+
put_flush_packet(bc);
-
- return 0;
-}
-static int64_t lsb2full(StreamContext *stream, int64_t lsb){
- int64_t mask = (1<<stream->msb_timestamp_shift)-1;
- int64_t delta= stream->last_pts - mask/2;
- return ((lsb - delta)&mask) + delta;
+ return 0;
}
static int nut_write_packet(AVFormatContext *s, AVPacket *pkt)
enc = s->streams[stream_index]->codec;
key_frame = !!(pkt->flags & PKT_FLAG_KEY);
-
+
frame_type=0;
if(frame_start + size + 20 - FFMAX(nut->packet_start[1], nut->packet_start[2]) > MAX_DISTANCE)
frame_type=2;
if(frame_type>1){
int64_t global_ts= av_rescale(pts, stream->rate_den*(int64_t)nut->rate_num, stream->rate_num*(int64_t)nut->rate_den);
reset(s, global_ts);
- put_be64(bc, KEYFRAME_STARTCODE);
+ put_be64(bc, KEYFRAME_STARTCODE);
put_v(bc, global_ts);
}
assert(stream->last_pts != AV_NOPTS_VALUE);
flags= nut->frame_code[i].flags;
assert(size_mul > size_lsb);
-
+
if(stream_id_plus1 == 0) length+= get_length(stream_index);
else if(stream_id_plus1 - 1 != stream_index)
continue;
if(full_pts && time_delta)
continue;
-
+
if(!time_delta){
length += get_length(coded_pts);
}else{
if(size > MAX_DISTANCE){
assert(frame_type > 1);
}
-
+
put_buffer(bc, pkt->data, size);
update(nut, stream_index, frame_start, frame_type, frame_code, key_frame, size, pts);
-
+
return 0;
}
for (i = 0; s->nb_streams; i++)
{
- put_be64(bc, INDEX_STARTCODE);
- put_packetheader(nut, bc, 64, 1);
- put_v(bc, s->streams[i]->id);
- put_v(bc, ...);
+ put_be64(bc, INDEX_STARTCODE);
+ put_packetheader(nut, bc, 64, 1);
+ put_v(bc, s->streams[i]->id);
+ put_v(bc, ...);
update_packetheader(nut, bc, 0, 1);
}
#endif
put_flush_packet(bc);
-
+
av_freep(&nut->stream);
return 0;
ByteIOContext *bc = &s->pb;
uint64_t tmp;
int i, j, tmp_stream, tmp_mul, tmp_time, tmp_size, count, tmp_res;
-
+
get_packetheader(nut, bc, 1);
tmp = get_v(bc);
if (tmp != 2){
- av_log(s, AV_LOG_ERROR, "bad version (%Ld)\n", tmp);
+ av_log(s, AV_LOG_ERROR, "bad version (%"PRId64")\n", tmp);
return -1;
}
-
+
nut->stream_count = get_v(bc);
if(nut->stream_count > MAX_STREAMS){
av_log(s, AV_LOG_ERROR, "too many streams\n");
nut->rate_den= get_v(bc);
nut->short_startcode= get_v(bc);
if(nut->short_startcode>>16 != 'N'){
- av_log(s, AV_LOG_ERROR, "invalid short startcode %X\n", nut->short_startcode);
+ av_log(s, AV_LOG_ERROR, "invalid short startcode %X\n", nut->short_startcode);
return -1;
}
-
+
for(i=0; i<256;){
int tmp_flags = get_v(bc);
int tmp_fields= get_v(bc);
else tmp_res = 0;
if(tmp_fields>5) count = get_v(bc);
else count = tmp_mul - tmp_size;
-
- while(tmp_fields-- > 6)
+
+ while(tmp_fields-- > 6)
get_v(bc);
-
+
if(count == 0 || i+count > 256){
av_log(s, AV_LOG_ERROR, "illegal count %d at %d\n", count, i);
return -1;
int class, nom, denom, stream_id;
uint64_t tmp;
AVStream *st;
-
+
get_packetheader(nut, bc, 1);
stream_id= get_v(bc);
if(stream_id >= nut->stream_count || s->streams[stream_id])
return -1;
-
+
st = av_new_stream(s, stream_id);
if (!st)
return AVERROR_NOMEM;
if((unsigned)st->codec->extradata_size > (1<<30))
return -1;
st->codec->extradata= av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
- get_buffer(bc, st->codec->extradata, st->codec->extradata_size);
-// url_fskip(bc, get_v(bc));
+ get_buffer(bc, st->codec->extradata, st->codec->extradata_size);
+// url_fskip(bc, get_v(bc));
}
-
+
if (st->codec->codec_type == CODEC_TYPE_VIDEO) /* VIDEO */
{
st->codec->width = get_v(bc);
static int decode_info_header(NUTContext *nut){
AVFormatContext *s= nut->avf;
ByteIOContext *bc = &s->pb;
-
+
get_packetheader(nut, bc, 1);
for(;;){
if(!id)
break;
else if(id >= sizeof(info_table)/sizeof(info_table[0])){
- av_log(s, AV_LOG_ERROR, "info id is too large %d %d\n", id, sizeof(info_table)/sizeof(info_table[0]));
+ av_log(s, AV_LOG_ERROR, "info id is too large %d %zd\n", id, sizeof(info_table)/sizeof(info_table[0]));
return -1;
}
get_str(bc, custom_name, sizeof(custom_name));
name= custom_name;
}
-
+
if(!strcmp(type, "v")){
get_v(bc);
}else{
int inited_stream_count;
nut->avf= s;
-
+
/* main header */
pos=0;
for(;;){
if(decode_main_header(nut) >= 0)
break;
}
-
-
+
+
s->bit_rate = 0;
nut->stream = av_malloc(sizeof(StreamContext)*nut->stream_count);
if(frame_type)
nut->packet_start[ frame_type ]= frame_start; //otherwise 1 goto 1 may happen
-
+
flags= nut->frame_code[frame_code].flags;
size_mul= nut->frame_code[frame_code].size_mul;
size_lsb= nut->frame_code[frame_code].size_lsb;
stream_id= nut->frame_code[frame_code].stream_id_plus1 - 1;
time_delta= nut->frame_code[frame_code].timestamp_delta;
-
+
if(stream_id==-1)
stream_id= get_v(bc);
if(stream_id >= s->nb_streams){
if(*key_frame_ret){
// av_log(s, AV_LOG_DEBUG, "stream:%d start:%lld pts:%lld length:%lld\n",stream_id, frame_start, av_pts, frame_start - nut->stream[stream_id].last_sync_pos);
av_add_index_entry(
- s->streams[stream_id],
- frame_start,
- pts,
+ s->streams[stream_id],
+ frame_start,
+ pts,
+ 0,
frame_start - nut->stream[stream_id].last_sync_pos,
AVINDEX_KEYFRAME);
nut->stream[stream_id].last_sync_pos= frame_start;
size= size_lsb;
if(flags & FLAG_DATA_SIZE)
size+= size_mul*get_v(bc);
-
+
#ifdef TRACE
av_log(s, AV_LOG_DEBUG, "fs:%lld fc:%d ft:%d kf:%d pts:%lld size:%d mul:%d lsb:%d flags:%d delta:%d\n", frame_start, frame_code, frame_type, *key_frame_ret, pts, size, size_mul, size_lsb, flags, time_delta);
#endif
av_log(s, AV_LOG_ERROR, "frame size too large\n");
return -1;
}
-
+
*stream_id_ret = stream_id;
*pts_ret = pts;
ByteIOContext *bc = &s->pb;
int size, stream_id, key_frame, discard;
int64_t pts, last_IP_pts;
-
+
size= decode_frame_header(nut, &key_frame, &pts, &stream_id, frame_code, frame_type, frame_start);
if(size < 0)
return -1;
av_get_packet(bc, pkt, size);
pkt->stream_index = stream_id;
if (key_frame)
- pkt->flags |= PKT_FLAG_KEY;
+ pkt->flags |= PKT_FLAG_KEY;
pkt->pts = pts;
return 0;
break;
default:
resync:
-av_log(s, AV_LOG_DEBUG, "syncing from %lld\n", nut->packet_start[2]+1);
+av_log(s, AV_LOG_DEBUG, "syncing from %"PRId64"\n", nut->packet_start[2]+1);
tmp= find_any_startcode(bc, nut->packet_start[2]+1);
if(tmp==0)
return -1;
int64_t pos, pts;
uint64_t code;
int frame_code,step, stream_id, i,size, key_frame;
-av_log(s, AV_LOG_DEBUG, "read_timestamp(X,%d,%lld,%lld)\n", stream_index, *pos_arg, pos_limit);
+av_log(s, AV_LOG_DEBUG, "read_timestamp(X,%d,%"PRId64",%"PRId64")\n", stream_index, *pos_arg, pos_limit);
if(*pos_arg < 0)
return AV_NOPTS_VALUE;
url_fseek(bc, -8, SEEK_CUR);
for(i=0; i<s->nb_streams; i++)
nut->stream[i].last_sync_pos= url_ftell(bc);
-
+
for(;;){
int frame_type=0;
int64_t pos= url_ftell(bc);
uint64_t tmp=0;
-
+
if(pos > pos_limit || url_feof(bc))
return AV_NOPTS_VALUE;
size= decode_frame_header(nut, &key_frame, &pts, &stream_id, frame_code, frame_type, pos);
if(size < 0)
goto resync;
-
+
stream= &nut->stream[stream_id];
if(stream_id != stream_index || !key_frame || pos < *pos_arg){
url_fseek(bc, size, SEEK_CUR);
break;
}
-
+
*pos_arg= pos;
return pts;
default:
resync:
-av_log(s, AV_LOG_DEBUG, "syncing from %lld\n", nut->packet_start[2]+1);
+av_log(s, AV_LOG_DEBUG, "syncing from %"PRId64"\n", nut->packet_start[2]+1);
if(!find_any_startcode(bc, nut->packet_start[2]+1))
return AV_NOPTS_VALUE;
static int nut_read_close(AVFormatContext *s)
{
NUTContext *nut = s->priv_data;
- int i;
- for(i=0;i<s->nb_streams;i++) {
- av_freep(&s->streams[i]->codec->extradata);
- }
av_freep(&nut->stream);
return 0;
}
-static AVInputFormat nut_iformat = {
+#ifdef CONFIG_NUT_DEMUXER
+AVInputFormat nut_demuxer = {
"nut",
"nut format",
sizeof(NUTContext),
nut_read_timestamp,
.extensions = "nut",
};
-
-#ifdef CONFIG_MUXERS
-static AVOutputFormat nut_oformat = {
+#endif
+#ifdef CONFIG_NUT_MUXER
+AVOutputFormat nut_muxer = {
"nut",
"nut format",
"video/x-nut",
nut_write_trailer,
.flags = AVFMT_GLOBALHEADER,
};
-#endif //CONFIG_MUXERS
-
-int nut_init(void)
-{
- av_register_input_format(&nut_iformat);
-#ifdef CONFIG_MUXERS
- av_register_output_format(&nut_oformat);
-#endif //CONFIG_MUXERS
- return 0;
-}
+#endif