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Diffstat (limited to 'libavformat/nut.c')
-rw-r--r--libavformat/nut.c156
1 files changed, 78 insertions, 78 deletions
diff --git a/libavformat/nut.c b/libavformat/nut.c
index 4bcfbb9fae..ac696cb628 100644
--- a/libavformat/nut.c
+++ b/libavformat/nut.c
@@ -42,11 +42,11 @@
//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"
@@ -115,7 +115,7 @@ void ff_parse_specific_params(AVCodecContext *stream, int *au_rate, int *au_ssiz
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;
@@ -124,10 +124,10 @@ static void update(NUTContext *nut, int stream_index, int64_t frame_start, int f
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);
@@ -163,7 +163,7 @@ static void build_frame_code(AVFormatContext *s){
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;
@@ -258,7 +258,7 @@ static uint64_t get_v(ByteIOContext *bc)
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){
@@ -268,7 +268,7 @@ static int get_str(ByteIOContext *bc, char *string, unsigned int maxlen){
if(maxlen)
string[FFMIN(len, maxlen-1)]= 0;
-
+
if(maxlen == len)
return -1;
else
@@ -285,13 +285,13 @@ static int64_t get_s(ByteIOContext *bc){
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;
}
@@ -344,7 +344,7 @@ static int check_checksum(ByteIOContext *bc){
}
/**
- *
+ *
*/
static int get_length(uint64_t val){
int i;
@@ -356,7 +356,7 @@ static int get_length(uint64_t val){
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
@@ -416,7 +416,7 @@ static void put_v(ByteIOContext *bc, uint64_t val)
*/
static void put_str(ByteIOContext *bc, const char *string){
int len= strlen(string);
-
+
put_v(bc, len);
put_buffer(bc, string, len);
}
@@ -428,7 +428,7 @@ static void put_s(ByteIOContext *bc, int64_t val){
static void put_vb(ByteIOContext *bc, uint64_t val){
int i;
-
+
for (i=8; val>>i; i+=8);
put_v(bc, i>>3);
@@ -439,19 +439,19 @@ static void put_vb(ByteIOContext *bc, uint64_t val){
#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__)
@@ -464,7 +464,7 @@ static int put_packetheader(NUTContext *nut, ByteIOContext *bc, int max_size, in
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 */
@@ -482,15 +482,15 @@ static int update_packetheader(NUTContext *nut, ByteIOContext *bc, int additiona
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);
@@ -498,11 +498,11 @@ static int update_packetheader(NUTContext *nut, ByteIOContext *bc, int additiona
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;
}
@@ -514,15 +514,15 @@ static int nut_write_header(AVFormatContext *s)
int i, j, tmp_time, tmp_flags,tmp_stream, tmp_mul, tmp_size, tmp_fields;
nut->avf= s;
-
- nut->stream =
+
+ 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);
@@ -530,14 +530,14 @@ static int nut_write_header(AVFormatContext *s)
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;
@@ -554,7 +554,7 @@ static int nut_write_header(AVFormatContext *s)
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;
@@ -576,14 +576,14 @@ static int nut_write_header(AVFormatContext *s)
}
update_packetheader(nut, bc, 0, 1);
-
+
/* stream headers */
for (i = 0; i < s->nb_streams; i++)
{
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*/);
@@ -606,7 +606,7 @@ static int nut_write_header(AVFormatContext *s)
}
else
put_vb(bc, 0);
-
+
ff_parse_specific_params(codec, &nom, &ssize, &denom);
nut->stream[i].rate_num= nom;
@@ -624,14 +624,14 @@ static int nut_write_header(AVFormatContext *s)
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 */
-
+
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:
@@ -655,7 +655,7 @@ static int nut_write_header(AVFormatContext *s)
/* 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 */
@@ -681,12 +681,12 @@ static int nut_write_header(AVFormatContext *s)
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;
}
@@ -712,7 +712,7 @@ 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;
@@ -745,7 +745,7 @@ static int nut_write_packet(AVFormatContext *s, AVPacket *pkt)
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;
@@ -764,7 +764,7 @@ static int nut_write_packet(AVFormatContext *s, AVPacket *pkt)
if(full_pts && time_delta)
continue;
-
+
if(!time_delta){
length += get_length(coded_pts);
}else{
@@ -809,11 +809,11 @@ static int nut_write_packet(AVFormatContext *s, AVPacket *pkt)
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;
}
@@ -838,7 +838,7 @@ static int nut_write_trailer(AVFormatContext *s)
#endif
put_flush_packet(bc);
-
+
av_freep(&nut->stream);
return 0;
@@ -863,7 +863,7 @@ static int decode_main_header(NUTContext *nut){
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);
@@ -871,7 +871,7 @@ static int decode_main_header(NUTContext *nut){
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");
@@ -886,7 +886,7 @@ static int decode_main_header(NUTContext *nut){
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);
@@ -899,10 +899,10 @@ static int decode_main_header(NUTContext *nut){
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;
@@ -940,12 +940,12 @@ static int decode_stream_header(NUTContext *nut){
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;
@@ -993,10 +993,10 @@ static int decode_stream_header(NUTContext *nut){
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);
+ 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);
@@ -1024,7 +1024,7 @@ static int decode_stream_header(NUTContext *nut){
static int decode_info_header(NUTContext *nut){
AVFormatContext *s= nut->avf;
ByteIOContext *bc = &s->pb;
-
+
get_packetheader(nut, bc, 1);
for(;;){
@@ -1050,7 +1050,7 @@ static int decode_info_header(NUTContext *nut){
get_str(bc, custom_name, sizeof(custom_name));
name= custom_name;
}
-
+
if(!strcmp(type, "v")){
get_v(bc);
}else{
@@ -1081,7 +1081,7 @@ static int nut_read_header(AVFormatContext *s, AVFormatParameters *ap)
int inited_stream_count;
nut->avf= s;
-
+
/* main header */
pos=0;
for(;;){
@@ -1093,8 +1093,8 @@ static int nut_read_header(AVFormatContext *s, AVFormatParameters *ap)
if(decode_main_header(nut) >= 0)
break;
}
-
-
+
+
s->bit_rate = 0;
nut->stream = av_malloc(sizeof(StreamContext)*nut->stream_count);
@@ -1147,13 +1147,13 @@ static int decode_frame_header(NUTContext *nut, int *key_frame_ret, int64_t *pts
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){
@@ -1189,9 +1189,9 @@ static int decode_frame_header(NUTContext *nut, int *key_frame_ret, int64_t *pts
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,
frame_start - nut->stream[stream_id].last_sync_pos,
AVINDEX_KEYFRAME);
nut->stream[stream_id].last_sync_pos= frame_start;
@@ -1202,7 +1202,7 @@ static int decode_frame_header(NUTContext *nut, int *key_frame_ret, int64_t *pts
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
@@ -1211,7 +1211,7 @@ av_log(s, AV_LOG_DEBUG, "fs:%lld fc:%d ft:%d kf:%d pts:%lld size:%d mul:%d lsb:%
av_log(s, AV_LOG_ERROR, "frame size too large\n");
return -1;
}
-
+
*stream_id_ret = stream_id;
*pts_ret = pts;
@@ -1225,7 +1225,7 @@ static int decode_frame(NUTContext *nut, AVPacket *pkt, int frame_code, int fram
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;
@@ -1336,12 +1336,12 @@ av_log(s, AV_LOG_DEBUG, "read_timestamp(X,%d,%"PRId64",%"PRId64")\n", stream_ind
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;
@@ -1370,13 +1370,13 @@ av_log(s, AV_LOG_DEBUG, "read_timestamp(X,%d,%"PRId64",%"PRId64")\n", stream_ind
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:
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-14 23:44:34 +0000