* 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 <strings.h>
#include "libavutil/avstring.h"
+#include "libavutil/bswap.h"
+#include "libavutil/dict.h"
+#include "libavutil/mathematics.h"
#include "libavutil/tree.h"
+#include "avio_internal.h"
#include "nut.h"
#undef NDEBUG
#include <assert.h>
-static int get_str(ByteIOContext *bc, char *string, unsigned int maxlen){
- unsigned int len= ff_get_v(bc);
+#define NUT_MAX_STREAMS 256 /* arbitrary sanity check value */
+
+static int get_str(AVIOContext *bc, char *string, unsigned int maxlen){
+ unsigned int len= ffio_read_varlen(bc);
if(len && maxlen)
- get_buffer(bc, string, FFMIN(len, maxlen));
+ avio_read(bc, string, FFMIN(len, maxlen));
while(len > maxlen){
- get_byte(bc);
+ avio_r8(bc);
len--;
}
return 0;
}
-static int64_t get_s(ByteIOContext *bc){
- int64_t v = ff_get_v(bc) + 1;
+static int64_t get_s(AVIOContext *bc){
+ int64_t v = ffio_read_varlen(bc) + 1;
if (v&1) return -(v>>1);
else return (v>>1);
}
-static uint64_t get_fourcc(ByteIOContext *bc){
- unsigned int len= ff_get_v(bc);
+static uint64_t get_fourcc(AVIOContext *bc){
+ unsigned int len= ffio_read_varlen(bc);
- if (len==2) return get_le16(bc);
- else if(len==4) return get_le32(bc);
+ if (len==2) return avio_rl16(bc);
+ else if(len==4) return avio_rl32(bc);
else return -1;
}
#ifdef TRACE
-static inline uint64_t get_v_trace(ByteIOContext *bc, char *file, char *func, int line){
- uint64_t v= ff_get_v(bc);
+static inline uint64_t get_v_trace(AVIOContext *bc, char *file, char *func, int line){
+ 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;
}
-static inline int64_t get_s_trace(ByteIOContext *bc, char *file, char *func, int line){
+static inline int64_t get_s_trace(AVIOContext *bc, char *file, char *func, int line){
int64_t v= get_s(bc);
av_log(NULL, AV_LOG_DEBUG, "get_s %5"PRId64" / %"PRIX64" in %s %s:%d\n", v, v, file, func, line);
return v;
}
-static inline uint64_t get_vb_trace(ByteIOContext *bc, char *file, char *func, int line){
+static inline uint64_t get_vb_trace(AVIOContext *bc, char *file, char *func, int line){
uint64_t v= get_vb(bc);
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
-static int get_packetheader(NUTContext *nut, ByteIOContext *bc, int calculate_checksum, uint64_t startcode)
+static int get_packetheader(NUTContext *nut, AVIOContext *bc, int calculate_checksum, uint64_t startcode)
{
int64_t size;
-// start= url_ftell(bc) - 8;
+// start= avio_tell(bc) - 8;
- startcode= be2me_64(startcode);
- startcode= ff_crc04C11DB7_update(0, &startcode, 8);
+ startcode= av_be2ne64(startcode);
+ startcode= ff_crc04C11DB7_update(0, (uint8_t*)&startcode, 8);
- init_checksum(bc, ff_crc04C11DB7_update, startcode);
- size= ff_get_v(bc);
+ ffio_init_checksum(bc, ff_crc04C11DB7_update, startcode);
+ size= ffio_read_varlen(bc);
if(size > 4096)
- get_be32(bc);
- if(get_checksum(bc) && size > 4096)
+ avio_rb32(bc);
+ if(ffio_get_checksum(bc) && size > 4096)
return -1;
- init_checksum(bc, calculate_checksum ? ff_crc04C11DB7_update : NULL, 0);
+ ffio_init_checksum(bc, calculate_checksum ? ff_crc04C11DB7_update : NULL, 0);
return size;
}
-static uint64_t find_any_startcode(ByteIOContext *bc, int64_t pos){
+static uint64_t find_any_startcode(AVIOContext *bc, int64_t pos){
uint64_t state=0;
if(pos >= 0)
- url_fseek(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
+ 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)){
- state= (state<<8) | get_byte(bc);
+ while(!bc->eof_reached){
+ state= (state<<8) | avio_r8(bc);
if((state>>56) != 'N')
continue;
switch(state){
* Find the given startcode.
* @param code the startcode
* @param pos the start position of the search, or -1 if the current position
- * @returns the position of the startcode or -1 if not found
+ * @return the position of the startcode or -1 if not found
*/
-static int64_t find_startcode(ByteIOContext *bc, uint64_t code, int64_t pos){
+static int64_t find_startcode(AVIOContext *bc, uint64_t code, int64_t pos){
for(;;){
uint64_t startcode= find_any_startcode(bc, pos);
if(startcode == code)
- return url_ftell(bc) - 8;
+ return avio_tell(bc) - 8;
else if(startcode == 0)
return -1;
pos=-1;
}
#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;\
}\
dst= tmp;
-static int skip_reserved(ByteIOContext *bc, int64_t pos){
- pos -= url_ftell(bc);
+static int skip_reserved(AVIOContext *bc, int64_t pos){
+ pos -= avio_tell(bc);
if(pos<0){
- url_fseek(bc, pos, SEEK_CUR);
+ avio_seek(bc, pos, SEEK_CUR);
return -1;
}else{
while(pos--)
- get_byte(bc);
+ avio_r8(bc);
return 0;
}
}
static int decode_main_header(NUTContext *nut){
AVFormatContext *s= nut->avf;
- ByteIOContext *bc = s->pb;
+ AVIOContext *bc = s->pb;
uint64_t tmp, end;
unsigned int stream_count;
int i, j, tmp_stream, tmp_mul, tmp_pts, tmp_size, count, tmp_res, tmp_head_idx;
- int64_t tmp_match;
end= get_packetheader(nut, bc, 1, MAIN_STARTCODE);
- end += url_ftell(bc);
+ end += avio_tell(bc);
GET_V(tmp , tmp >=2 && tmp <= 3)
- GET_V(stream_count , tmp > 0 && tmp <=MAX_STREAMS)
+ 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;
for(i=0; i<nut->time_base_count; i++){
GET_V(nut->time_base[i].num, tmp>0 && tmp<(1ULL<<31))
GET_V(nut->time_base[i].den, tmp>0 && tmp<(1ULL<<31))
- if(ff_gcd(nut->time_base[i].num, nut->time_base[i].den) != 1){
+ if(av_gcd(nut->time_base[i].num, nut->time_base[i].den) != 1){
av_log(s, AV_LOG_ERROR, "time base invalid\n");
- return -1;
+ return AVERROR_INVALIDDATA;
}
}
tmp_pts=0;
tmp_mul=1;
tmp_stream=0;
- 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>6) get_s(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);
- return -1;
+ return AVERROR_INVALIDDATA;
}
if(tmp_stream >= stream_count){
av_log(s, AV_LOG_ERROR, "illegal stream number\n");
- return -1;
+ return AVERROR_INVALIDDATA;
}
for(j=0; j<count; j++,i++){
}
assert(nut->frame_code['N'].flags == FLAG_INVALID);
- if(end > url_ftell(bc) + 4){
+ if(end > avio_tell(bc) + 4){
int rem= 1024;
GET_V(nut->header_count, tmp<128U)
nut->header_count++;
rem -= nut->header_len[i];
if(rem < 0){
av_log(s, AV_LOG_ERROR, "invalid elision header\n");
- return -1;
+ return AVERROR_INVALIDDATA;
}
nut->header[i]= av_malloc(nut->header_len[i]);
- get_buffer(bc, nut->header[i], nut->header_len[i]);
+ avio_read(bc, nut->header[i], nut->header_len[i]);
}
assert(nut->header_len[0]==0);
}
- if(skip_reserved(bc, end) || get_checksum(bc)){
+ if(skip_reserved(bc, end) || ffio_get_checksum(bc)){
av_log(s, AV_LOG_ERROR, "main header checksum mismatch\n");
- return -1;
+ return AVERROR_INVALIDDATA;
}
nut->stream = av_mallocz(sizeof(StreamContext)*stream_count);
static int decode_stream_header(NUTContext *nut){
AVFormatContext *s= nut->avf;
- ByteIOContext *bc = s->pb;
+ AVIOContext *bc = s->pb;
StreamContext *stc;
int class, stream_id;
uint64_t tmp, end;
AVStream *st;
end= get_packetheader(nut, bc, 1, STREAM_STARTCODE);
- end += url_ftell(bc);
+ end += avio_tell(bc);
GET_V(stream_id, tmp < s->nb_streams && !nut->stream[tmp].time_base);
stc= &nut->stream[stream_id];
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)
{
case 0:
- st->codec->codec_type = CODEC_TYPE_VIDEO;
- st->codec->codec_id = codec_get_id(codec_bmp_tags, tmp);
+ st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
+ st->codec->codec_id = av_codec_get_id(
+ (const AVCodecTag * const []) { ff_codec_bmp_tags, ff_nut_video_tags, 0 },
+ tmp);
break;
case 1:
- st->codec->codec_type = CODEC_TYPE_AUDIO;
- st->codec->codec_id = codec_get_id(codec_wav_tags, tmp);
+ st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
+ st->codec->codec_id = ff_codec_get_id(ff_codec_wav_tags, tmp);
break;
case 2:
- st->codec->codec_type = CODEC_TYPE_SUBTITLE;
- st->codec->codec_id = codec_get_id(ff_nut_subtitle_tags, tmp);
+ st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE;
+ st->codec->codec_id = ff_codec_get_id(ff_nut_subtitle_tags, tmp);
break;
case 3:
- st->codec->codec_type = CODEC_TYPE_DATA;
+ st->codec->codec_type = AVMEDIA_TYPE_DATA;
break;
default:
av_log(s, AV_LOG_ERROR, "unknown stream class (%d)\n", class);
return -1;
}
if(class<3 && st->codec->codec_id == CODEC_ID_NONE)
- av_log(s, AV_LOG_ERROR, "Unknown codec?!\n");
+ av_log(s, AV_LOG_ERROR, "Unknown codec tag '0x%04x' for stream number %d\n",
+ (unsigned int)tmp, stream_id);
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){
st->codec->extradata= av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
- get_buffer(bc, st->codec->extradata, st->codec->extradata_size);
+ avio_read(bc, st->codec->extradata, st->codec->extradata_size);
}
- if (st->codec->codec_type == CODEC_TYPE_VIDEO){
+ if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO){
GET_V(st->codec->width , tmp > 0)
GET_V(st->codec->height, tmp > 0)
- st->codec->sample_aspect_ratio.num= ff_get_v(bc);
- st->codec->sample_aspect_ratio.den= ff_get_v(bc);
- if((!st->codec->sample_aspect_ratio.num) != (!st->codec->sample_aspect_ratio.den)){
- av_log(s, AV_LOG_ERROR, "invalid aspect ratio %d/%d\n", st->codec->sample_aspect_ratio.num, st->codec->sample_aspect_ratio.den);
+ 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 */
- }else if (st->codec->codec_type == CODEC_TYPE_AUDIO){
+ 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)){
+ if(skip_reserved(bc, end) || ffio_get_checksum(bc)){
av_log(s, AV_LOG_ERROR, "stream header %d checksum mismatch\n", stream_id);
return -1;
}
static int decode_info_header(NUTContext *nut){
AVFormatContext *s= nut->avf;
- ByteIOContext *bc = s->pb;
- uint64_t tmp;
- unsigned int stream_id_plus1, chapter_start, chapter_len, count;
+ AVIOContext *bc = s->pb;
+ uint64_t tmp, chapter_start, chapter_len;
+ unsigned int stream_id_plus1, count;
int chapter_id, i;
int64_t value, end;
char name[256], str_value[1024], type_str[256];
const char *type;
AVChapter *chapter= NULL;
+ AVStream *st= NULL;
+ AVDictionary **metadata = NULL;
end= get_packetheader(nut, bc, 1, INFO_STARTCODE);
- end += url_ftell(bc);
+ end += avio_tell(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;
chapter= ff_new_chapter(s, chapter_id,
nut->time_base[chapter_start % nut->time_base_count],
start, start + chapter_len, NULL);
- }
+ metadata = &chapter->metadata;
+ } else if(stream_id_plus1) {
+ st= s->streams[stream_id_plus1 - 1];
+ metadata = &st->metadata;
+ } else
+ metadata = &s->metadata;
for(i=0; i<count; i++){
get_str(bc, name, sizeof(name));
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);
continue;
}
- if(chapter_id==0 && !strcmp(type, "UTF-8")){
- if (!strcmp(name, "Author"))
- av_strlcpy(s->author , str_value, sizeof(s->author));
- else if(!strcmp(name, "Title"))
- av_strlcpy(s->title , str_value, sizeof(s->title));
- else if(!strcmp(name, "Copyright"))
- av_strlcpy(s->copyright, str_value, sizeof(s->copyright));
- else if(!strcmp(name, "Description"))
- av_strlcpy(s->comment , str_value, sizeof(s->comment));
- else if(!strcmp(name, "Disposition"))
+ if(!strcmp(type, "UTF-8")){
+ if(chapter_id==0 && !strcmp(name, "Disposition")) {
set_disposition_bits(s, str_value, stream_id_plus1 - 1);
- }
- if(chapter && !strcmp(type, "UTF-8")){
- if(!strcmp(name, "Title"))
- chapter->title= av_strdup(str_value);
+ continue;
+ }
+ if(metadata && strcasecmp(name,"Uses")
+ && strcasecmp(name,"Depends") && strcasecmp(name,"Replaces"))
+ av_dict_set(metadata, name, str_value, 0);
}
}
- if(skip_reserved(bc, end) || get_checksum(bc)){
+ if(skip_reserved(bc, end) || ffio_get_checksum(bc)){
av_log(s, AV_LOG_ERROR, "info header checksum mismatch\n");
return -1;
}
static int decode_syncpoint(NUTContext *nut, int64_t *ts, int64_t *back_ptr){
AVFormatContext *s= nut->avf;
- ByteIOContext *bc = s->pb;
+ AVIOContext *bc = s->pb;
int64_t end, tmp;
- nut->last_syncpoint_pos= url_ftell(bc)-8;
+ nut->last_syncpoint_pos= avio_tell(bc)-8;
end= get_packetheader(nut, bc, 1, SYNCPOINT_STARTCODE);
- end += url_ftell(bc);
+ 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;
ff_nut_reset_ts(nut, nut->time_base[tmp % nut->time_base_count], tmp / nut->time_base_count);
- if(skip_reserved(bc, end) || get_checksum(bc)){
+ if(skip_reserved(bc, end) || ffio_get_checksum(bc)){
av_log(s, AV_LOG_ERROR, "sync point checksum mismatch\n");
return -1;
}
static int find_and_decode_index(NUTContext *nut){
AVFormatContext *s= nut->avf;
- ByteIOContext *bc = s->pb;
+ AVIOContext *bc = s->pb;
uint64_t tmp, end;
int i, j, syncpoint_count;
- int64_t filesize= url_fsize(bc);
+ int64_t filesize= avio_size(bc);
int64_t *syncpoints;
int8_t *has_keyframe;
int ret= -1;
- url_fseek(bc, filesize-12, SEEK_SET);
- url_fseek(bc, filesize-get_be64(bc), SEEK_SET);
- if(get_be64(bc) != INDEX_STARTCODE){
+ avio_seek(bc, filesize-12, SEEK_SET);
+ avio_seek(bc, filesize-avio_rb64(bc), SEEK_SET);
+ if(avio_rb64(bc) != INDEX_STARTCODE){
av_log(s, AV_LOG_ERROR, "no index at the end\n");
return -1;
}
end= get_packetheader(nut, bc, 1, INDEX_STARTCODE);
- end += url_ftell(bc);
+ 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(skip_reserved(bc, end) || get_checksum(bc)){
+ if(skip_reserved(bc, end) || ffio_get_checksum(bc)){
av_log(s, AV_LOG_ERROR, "index checksum mismatch\n");
goto fail;
}
static int nut_read_header(AVFormatContext *s, AVFormatParameters *ap)
{
NUTContext *nut = s->priv_data;
- ByteIOContext *bc = s->pb;
+ AVIOContext *bc = s->pb;
int64_t pos;
int initialized_stream_count;
pos= find_startcode(bc, MAIN_STARTCODE, pos)+1;
if (pos<0+1){
av_log(s, AV_LOG_ERROR, "No main startcode found.\n");
- return -1;
+ return AVERROR_INVALIDDATA;
}
}while(decode_main_header(nut) < 0);
pos= find_startcode(bc, STREAM_STARTCODE, pos)+1;
if (pos<0+1){
av_log(s, AV_LOG_ERROR, "Not all stream headers found.\n");
- return -1;
+ return AVERROR_INVALIDDATA;
}
if(decode_stream_header(nut) >= 0)
initialized_stream_count++;
pos=0;
for(;;){
uint64_t startcode= find_any_startcode(bc, pos);
- pos= url_ftell(bc);
+ pos= avio_tell(bc);
if(startcode==0){
av_log(s, AV_LOG_ERROR, "EOF before video frames\n");
- return -1;
+ return AVERROR_INVALIDDATA;
}else if(startcode == SYNCPOINT_STARTCODE){
nut->next_startcode= startcode;
break;
s->data_offset= pos-8;
- if(!url_is_streamed(bc)){
- int64_t orig_pos= url_ftell(bc);
+ if(bc->seekable){
+ int64_t orig_pos= avio_tell(bc);
find_and_decode_index(nut);
- url_fseek(bc, orig_pos, SEEK_SET);
+ avio_seek(bc, orig_pos, SEEK_SET);
}
assert(nut->next_startcode == SYNCPOINT_STARTCODE);
+ ff_metadata_conv_ctx(s, NULL, ff_nut_metadata_conv);
+
return 0;
}
static int decode_frame_header(NUTContext *nut, int64_t *pts, int *stream_id, uint8_t *header_idx, int frame_code){
AVFormatContext *s= nut->avf;
- ByteIOContext *bc = s->pb;
+ AVIOContext *bc = s->pb;
StreamContext *stc;
int size, flags, size_mul, pts_delta, i, reserved_count;
uint64_t tmp;
- if(url_ftell(bc) > nut->last_syncpoint_pos + nut->max_distance){
- av_log(s, AV_LOG_ERROR, "Last frame must have been damaged %"PRId64" > %"PRId64" + %d\n", url_ftell(bc), nut->last_syncpoint_pos, nut->max_distance);
- return -1;
+ if(avio_tell(bc) > nut->last_syncpoint_pos + nut->max_distance){
+ av_log(s, AV_LOG_ERROR, "Last frame must have been damaged %"PRId64" > %"PRId64" + %d\n", avio_tell(bc), nut->last_syncpoint_pos, nut->max_distance);
+ return AVERROR_INVALIDDATA;
}
flags = nut->frame_code[frame_code].flags;
*header_idx = nut->frame_code[frame_code].header_idx;
if(flags & FLAG_INVALID)
- return -1;
+ 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");
- return -1;
+ return AVERROR_INVALIDDATA;
}
if(size > 4096)
*header_idx=0;
size -= nut->header_len[*header_idx];
if(flags&FLAG_CHECKSUM){
- get_be32(bc); //FIXME check this
+ avio_rb32(bc); //FIXME check this
}else if(size > 2*nut->max_distance || FFABS(stc->last_pts - *pts) > stc->max_pts_distance){
av_log(s, AV_LOG_ERROR, "frame size > 2max_distance and no checksum\n");
- return -1;
+ return AVERROR_INVALIDDATA;
}
stc->last_pts= *pts;
static int decode_frame(NUTContext *nut, AVPacket *pkt, int frame_code){
AVFormatContext *s= nut->avf;
- ByteIOContext *bc = s->pb;
+ AVIOContext *bc = s->pb;
int size, stream_id, discard;
int64_t pts, last_IP_pts;
StreamContext *stc;
size= decode_frame_header(nut, &pts, &stream_id, &header_idx, frame_code);
if(size < 0)
- return -1;
+ return size;
stc= &nut->stream[stream_id];
||(discard >= AVDISCARD_BIDIR && last_IP_pts != AV_NOPTS_VALUE && last_IP_pts > pts)
|| discard >= AVDISCARD_ALL
|| stc->skip_until_key_frame){
- url_fskip(bc, size);
+ avio_skip(bc, size);
return 1;
}
av_new_packet(pkt, size + nut->header_len[header_idx]);
memcpy(pkt->data, nut->header[header_idx], nut->header_len[header_idx]);
- pkt->pos= url_ftell(bc); //FIXME
- get_buffer(bc, pkt->data + nut->header_len[header_idx], size);
+ pkt->pos= avio_tell(bc); //FIXME
+ avio_read(bc, pkt->data + nut->header_len[header_idx], size);
pkt->stream_index = stream_id;
if (stc->last_flags & FLAG_KEY)
- pkt->flags |= PKT_FLAG_KEY;
+ pkt->flags |= AV_PKT_FLAG_KEY;
pkt->pts = pts;
return 0;
static int nut_read_packet(AVFormatContext *s, AVPacket *pkt)
{
NUTContext *nut = s->priv_data;
- ByteIOContext *bc = s->pb;
+ AVIOContext *bc = s->pb;
int i, frame_code=0, ret, skip;
int64_t ts, back_ptr;
for(;;){
- int64_t pos= url_ftell(bc);
+ int64_t pos= avio_tell(bc);
uint64_t tmp= nut->next_startcode;
nut->next_startcode=0;
if(tmp){
pos-=8;
}else{
- frame_code = get_byte(bc);
- if(url_feof(bc))
+ frame_code = avio_r8(bc);
+ if(bc->eof_reached)
return -1;
if(frame_code == 'N'){
tmp= frame_code;
for(i=1; i<8; i++)
- tmp = (tmp<<8) + get_byte(bc);
+ tmp = (tmp<<8) + avio_r8(bc);
}
}
switch(tmp){
case STREAM_STARTCODE:
case INDEX_STARTCODE:
skip= get_packetheader(nut, bc, 0, tmp);
- url_fseek(bc, skip, SEEK_CUR);
+ avio_skip(bc, skip);
break;
case INFO_STARTCODE:
if(decode_info_header(nut)<0)
case SYNCPOINT_STARTCODE:
if(decode_syncpoint(nut, &ts, &back_ptr)<0)
goto resync;
- frame_code = get_byte(bc);
+ frame_code = avio_r8(bc);
case 0:
ret= decode_frame(nut, pkt, frame_code);
if(ret==0)
av_log(s, AV_LOG_DEBUG, "syncing from %"PRId64"\n", pos);
tmp= find_any_startcode(bc, nut->last_syncpoint_pos+1);
if(tmp==0)
- return -1;
+ return AVERROR_INVALIDDATA;
av_log(s, AV_LOG_DEBUG, "sync\n");
nut->next_startcode= tmp;
}
static int64_t nut_read_timestamp(AVFormatContext *s, int stream_index, int64_t *pos_arg, int64_t pos_limit){
NUTContext *nut = s->priv_data;
- ByteIOContext *bc = s->pb;
+ AVIOContext *bc = s->pb;
int64_t pos, pts, back_ptr;
av_log(s, AV_LOG_DEBUG, "read_timestamp(X,%d,%"PRId64",%"PRId64")\n", stream_index, *pos_arg, pos_limit);
static int read_seek(AVFormatContext *s, int stream_index, int64_t pts, int flags){
NUTContext *nut = s->priv_data;
AVStream *st= s->streams[stream_index];
- syncpoint_t dummy={.ts= pts*av_q2d(st->time_base)*AV_TIME_BASE};
- syncpoint_t nopts_sp= {.ts= AV_NOPTS_VALUE, .back_ptr= AV_NOPTS_VALUE};
- syncpoint_t *sp, *next_node[2]= {&nopts_sp, &nopts_sp};
+ Syncpoint dummy={.ts= pts*av_q2d(st->time_base)*AV_TIME_BASE};
+ Syncpoint nopts_sp= {.ts= AV_NOPTS_VALUE, .back_ptr= AV_NOPTS_VALUE};
+ Syncpoint *sp, *next_node[2]= {&nopts_sp, &nopts_sp};
int64_t pos, pos2, ts;
int i;
pos2= st->index_entries[index].pos;
ts = st->index_entries[index].timestamp;
}else{
- av_tree_find(nut->syncpoints, &dummy, ff_nut_sp_pts_cmp, next_node);
+ av_tree_find(nut->syncpoints, &dummy, (void *) ff_nut_sp_pts_cmp,
+ (void **) next_node);
av_log(s, AV_LOG_DEBUG, "%"PRIu64"-%"PRIu64" %"PRId64"-%"PRId64"\n", next_node[0]->pos, next_node[1]->pos,
next_node[0]->ts , next_node[1]->ts);
pos= av_gen_search(s, -1, dummy.ts, next_node[0]->pos, next_node[1]->pos, next_node[1]->pos,
if(!(flags & AVSEEK_FLAG_BACKWARD)){
dummy.pos= pos+16;
next_node[1]= &nopts_sp;
- av_tree_find(nut->syncpoints, &dummy, ff_nut_sp_pos_cmp, next_node);
+ av_tree_find(nut->syncpoints, &dummy, (void *) ff_nut_sp_pos_cmp,
+ (void **) next_node);
pos2= av_gen_search(s, -2, dummy.pos, next_node[0]->pos , next_node[1]->pos, next_node[1]->pos,
next_node[0]->back_ptr, next_node[1]->back_ptr, flags, &ts, nut_read_timestamp);
if(pos2>=0)
//FIXME dir but I think it does not matter
}
dummy.pos= pos;
- sp= av_tree_find(nut->syncpoints, &dummy, ff_nut_sp_pos_cmp, NULL);
+ sp= av_tree_find(nut->syncpoints, &dummy, (void *) ff_nut_sp_pos_cmp,
+ NULL);
assert(sp);
pos2= sp->back_ptr - 15;
}
av_log(NULL, AV_LOG_DEBUG, "SEEKTO: %"PRId64"\n", pos2);
pos= find_startcode(s->pb, SYNCPOINT_STARTCODE, pos2);
- url_fseek(s->pb, pos, SEEK_SET);
+ avio_seek(s->pb, pos, SEEK_SET);
av_log(NULL, AV_LOG_DEBUG, "SP: %"PRId64"\n", pos);
if(pos2 > pos || pos2 + 15 < pos){
av_log(NULL, AV_LOG_ERROR, "no syncpoint at backptr pos\n");
static int nut_read_close(AVFormatContext *s)
{
NUTContext *nut = s->priv_data;
+ int i;
av_freep(&nut->time_base);
av_freep(&nut->stream);
+ ff_nut_free_sp(nut);
+ for(i = 1; i < nut->header_count; i++)
+ av_freep(&nut->header[i]);
return 0;
}
-#ifdef CONFIG_NUT_DEMUXER
-AVInputFormat nut_demuxer = {
- "nut",
- "nut format",
- sizeof(NUTContext),
- nut_probe,
- nut_read_header,
- nut_read_packet,
- nut_read_close,
- read_seek,
+#if CONFIG_NUT_DEMUXER
+AVInputFormat ff_nut_demuxer = {
+ .name = "nut",
+ .long_name = NULL_IF_CONFIG_SMALL("NUT format"),
+ .priv_data_size = sizeof(NUTContext),
+ .read_probe = nut_probe,
+ .read_header = nut_read_header,
+ .read_packet = nut_read_packet,
+ .read_close = nut_read_close,
+ .read_seek = read_seek,
.extensions = "nut",
+ .codec_tag = (const AVCodecTag * const []) { ff_codec_bmp_tags, ff_nut_video_tags, ff_codec_wav_tags, ff_nut_subtitle_tags, 0 },
};
#endif
projects / ffmpeg / blobdiff