* 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 "tree.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"
-#include "avstring.h"
+#include "riff.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 */
- if(len && maxlen)
- get_buffer(bc, string, FFMIN(len, maxlen));
- while(len > maxlen){
- get_byte(bc);
+static int get_str(AVIOContext *bc, char *string, unsigned int maxlen)
+{
+ unsigned int len = ffio_read_varlen(bc);
+
+ if (len && maxlen)
+ avio_read(bc, string, FFMIN(len, maxlen));
+ while (len > maxlen) {
+ avio_r8(bc);
len--;
}
- if(maxlen)
- string[FFMIN(len, maxlen-1)]= 0;
+ if (maxlen)
+ string[FFMIN(len, maxlen - 1)] = 0;
- if(maxlen == len)
+ if (maxlen == len)
return -1;
else
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);
+ 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);
- else return -1;
+ 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, const char *file,
+ const 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);
+ 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){
- int64_t v= get_s(bc);
+static inline int64_t get_s_trace(AVIOContext *bc, const char *file,
+ const 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);
+ 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){
- 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 get_s(bc) get_s_trace(bc, __FILE__, __PRETTY_FUNCTION__, __LINE__)
-#define get_vb(bc) get_vb_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__)
#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);
- if(size > 4096)
- get_be32(bc);
- if(get_checksum(bc) && size > 4096)
+ ffio_init_checksum(bc, ff_crc04C11DB7_update, startcode);
+ size = ffio_read_varlen(bc);
+ if (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){
- 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 are currently
-
- while(!url_feof(bc)){
- state= (state<<8) | get_byte(bc);
- if((state>>56) != 'N')
+static uint64_t find_any_startcode(AVIOContext *bc, int64_t pos)
+{
+ uint64_t state = 0;
+
+ if (pos >= 0)
+ /* 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);
+ while (!bc->eof_reached) {
+ state = (state << 8) | avio_r8(bc);
+ if ((state >> 56) != 'N')
continue;
- switch(state){
+ switch (state) {
case MAIN_STARTCODE:
case STREAM_STARTCODE:
case SYNCPOINT_STARTCODE:
* 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){
- for(;;){
- uint64_t startcode= find_any_startcode(bc, pos);
- if(startcode == code)
- return url_ftell(bc) - 8;
- else if(startcode == 0)
+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 avio_tell(bc) - 8;
+ else if (startcode == 0)
return -1;
- pos=-1;
+ pos = -1;
}
}
-static int nut_probe(AVProbeData *p){
+static int nut_probe(AVProbeData *p)
+{
int i;
- uint64_t code= 0;
+ uint64_t code = 0;
for (i = 0; i < p->buf_size; i++) {
code = (code << 8) | p->buf[i];
return 0;
}
-#define GET_V(dst, check) \
- tmp= ff_get_v(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);
- if(pos<0){
- url_fseek(bc, pos, SEEK_CUR);
- return -1;
- }else{
- while(pos--)
- get_byte(bc);
+#define GET_V(dst, check) \
+ do { \
+ tmp = ffio_read_varlen(bc); \
+ if (!(check)) { \
+ av_log(s, AV_LOG_ERROR, "Error " #dst " is (%"PRId64")\n", tmp); \
+ return AVERROR_INVALIDDATA; \
+ } \
+ dst = tmp; \
+ } while (0)
+
+static int skip_reserved(AVIOContext *bc, int64_t pos)
+{
+ pos -= avio_tell(bc);
+ if (pos < 0) {
+ avio_seek(bc, pos, SEEK_CUR);
+ return AVERROR_INVALIDDATA;
+ } else {
+ while (pos--)
+ avio_r8(bc);
return 0;
}
}
-static int decode_main_header(NUTContext *nut){
- AVFormatContext *s= nut->avf;
- ByteIOContext *bc = s->pb;
+static int decode_main_header(NUTContext *nut)
+{
+ AVFormatContext *s = nut->avf;
+ 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);
+ int i, j, count;
+ int tmp_stream, tmp_mul, tmp_pts, tmp_size, tmp_res, tmp_head_idx;
+
+ end = get_packetheader(nut, bc, 1, MAIN_STARTCODE);
+ end += avio_tell(bc);
+
+ nut->version = ffio_read_varlen(bc);
+ if (nut->version < NUT_MIN_VERSION &&
+ nut->version > NUT_MAX_VERSION) {
+ av_log(s, AV_LOG_ERROR, "Version %d not supported.\n",
+ nut->version);
+ return AVERROR(ENOSYS);
+ }
- 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);
- if(nut->max_distance > 65536){
+ 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;
+ nut->max_distance = 65536;
}
- GET_V(nut->time_base_count, tmp>0 && tmp<INT_MAX / sizeof(AVRational))
- nut->time_base= av_malloc(nut->time_base_count * sizeof(AVRational));
+ GET_V(nut->time_base_count, tmp > 0 && tmp < INT_MAX / sizeof(AVRational));
+ nut->time_base = av_malloc(nut->time_base_count * sizeof(AVRational));
+ if (!nut->time_base)
+ return AVERROR(ENOMEM);
- 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){
- av_log(s, AV_LOG_ERROR, "time base invalid\n");
- return -1;
+ 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 (av_gcd(nut->time_base[i].num, nut->time_base[i].den) != 1) {
+ av_log(s, AV_LOG_ERROR, "invalid time base %d/%d\n",
+ nut->time_base[i].num,
+ nut->time_base[i].den);
+ 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);
- 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);
- else tmp_size = 0;
- if(tmp_fields>4) tmp_res = ff_get_v(bc);
- else tmp_res = 0;
- if(tmp_fields>5) count = ff_get_v(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);
-
- while(tmp_fields-- > 8)
- ff_get_v(bc);
-
- if(count == 0 || i+count > 256){
+ tmp_pts = 0;
+ tmp_mul = 1;
+ tmp_stream = 0;
+ tmp_head_idx = 0;
+ for (i = 0; i < 256;) {
+ 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 = 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 = ffio_read_varlen(bc);
+ else
+ tmp_res = 0;
+ if (tmp_fields > 5)
+ count = ffio_read_varlen(bc);
+ else
+ count = tmp_mul - tmp_size;
+ if (tmp_fields > 6)
+ get_s(bc);
+ if (tmp_fields > 7)
+ tmp_head_idx = ffio_read_varlen(bc);
+
+ while (tmp_fields-- > 8)
+ 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;
+ if (tmp_stream >= stream_count) {
+ av_log(s, AV_LOG_ERROR, "illegal stream number %d >= %d\n",
+ tmp_stream, stream_count);
+ return AVERROR_INVALIDDATA;
}
- for(j=0; j<count; j++,i++){
+ for (j = 0; j < count; j++, i++) {
if (i == 'N') {
- nut->frame_code[i].flags= FLAG_INVALID;
+ nut->frame_code[i].flags = FLAG_INVALID;
j--;
continue;
}
- nut->frame_code[i].flags = tmp_flags ;
- nut->frame_code[i].pts_delta = tmp_pts ;
- nut->frame_code[i].stream_id = tmp_stream;
- nut->frame_code[i].size_mul = tmp_mul ;
- nut->frame_code[i].size_lsb = tmp_size+j;
- nut->frame_code[i].reserved_count = tmp_res ;
- nut->frame_code[i].header_idx = tmp_head_idx;
+ nut->frame_code[i].flags = tmp_flags;
+ nut->frame_code[i].pts_delta = tmp_pts;
+ nut->frame_code[i].stream_id = tmp_stream;
+ nut->frame_code[i].size_mul = tmp_mul;
+ nut->frame_code[i].size_lsb = tmp_size + j;
+ nut->frame_code[i].reserved_count = tmp_res;
+ nut->frame_code[i].header_idx = tmp_head_idx;
}
}
assert(nut->frame_code['N'].flags == FLAG_INVALID);
- if(end > url_ftell(bc) + 4){
- int rem= 1024;
- GET_V(nut->header_count, tmp<128U)
+ if (end > avio_tell(bc) + 4) {
+ int rem = 1024;
+ GET_V(nut->header_count, tmp < 128U);
nut->header_count++;
- for(i=1; i<nut->header_count; i++){
- GET_V(nut->header_len[i], tmp>0 && tmp<256);
- rem -= nut->header_len[i];
- if(rem < 0){
- av_log(s, AV_LOG_ERROR, "invalid elision header\n");
- return -1;
+ for (i = 1; i < nut->header_count; i++) {
+ uint8_t *hdr;
+ GET_V(nut->header_len[i], tmp > 0 && tmp < 256);
+ if (rem < nut->header_len[i]) {
+ av_log(s, AV_LOG_ERROR,
+ "invalid elision header %d : %d > %d\n",
+ i, nut->header_len[i], rem);
+ return AVERROR_INVALIDDATA;
}
- nut->header[i]= av_malloc(nut->header_len[i]);
- get_buffer(bc, nut->header[i], nut->header_len[i]);
+ rem -= nut->header_len[i];
+ hdr = av_malloc(nut->header_len[i]);
+ if (!hdr)
+ return AVERROR(ENOMEM);
+ avio_read(bc, hdr, nut->header_len[i]);
+ nut->header[i] = hdr;
}
- assert(nut->header_len[0]==0);
+ assert(nut->header_len[0] == 0);
}
- if(skip_reserved(bc, end) || get_checksum(bc)){
- av_log(s, AV_LOG_ERROR, "main header checksum mismatch\n");
- return -1;
+ // flags had been effectively introduced in version 4
+ if (nut->version > NUT_STABLE_VERSION) {
+ nut->flags = ffio_read_varlen(bc);
}
- nut->stream = av_mallocz(sizeof(StreamContext)*stream_count);
- for(i=0; i<stream_count; i++){
- av_new_stream(s, i);
+ if (skip_reserved(bc, end) || ffio_get_checksum(bc)) {
+ av_log(s, AV_LOG_ERROR, "main header checksum mismatch\n");
+ return AVERROR_INVALIDDATA;
}
+ nut->stream = av_mallocz(sizeof(StreamContext) * stream_count);
+ if (!nut->stream)
+ return AVERROR(ENOMEM);
+ for (i = 0; i < stream_count; i++)
+ avformat_new_stream(s, NULL);
+
return 0;
}
-static int decode_stream_header(NUTContext *nut){
- AVFormatContext *s= nut->avf;
- ByteIOContext *bc = s->pb;
+static int decode_stream_header(NUTContext *nut)
+{
+ AVFormatContext *s = nut->avf;
+ 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 = get_packetheader(nut, bc, 1, STREAM_STARTCODE);
+ end += avio_tell(bc);
GET_V(stream_id, tmp < s->nb_streams && !nut->stream[tmp].time_base);
- stc= &nut->stream[stream_id];
-
- st = s->streams[stream_id];
+ stc = &nut->stream[stream_id];
+ st = s->streams[stream_id];
if (!st)
return AVERROR(ENOMEM);
- class = ff_get_v(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);
- break;
- case 1:
- st->codec->codec_type = CODEC_TYPE_AUDIO;
- st->codec->codec_id = codec_get_id(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);
- break;
- case 3:
- st->codec->codec_type = CODEC_TYPE_DATA;
- break;
- default:
- av_log(s, AV_LOG_ERROR, "unknown stream class (%d)\n", class);
- return -1;
+ class = ffio_read_varlen(bc);
+ tmp = get_fourcc(bc);
+ st->codecpar->codec_tag = tmp;
+ switch (class) {
+ case 0:
+ st->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
+ st->codecpar->codec_id = av_codec_get_id((const AVCodecTag * const []) {
+ ff_nut_video_tags,
+ ff_codec_bmp_tags,
+ 0
+ },
+ tmp);
+ break;
+ case 1:
+ st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
+ st->codecpar->codec_id = av_codec_get_id((const AVCodecTag * const []) {
+ ff_nut_audio_tags,
+ ff_codec_wav_tags,
+ 0
+ },
+ tmp);
+ break;
+ case 2:
+ st->codecpar->codec_type = AVMEDIA_TYPE_SUBTITLE;
+ st->codecpar->codec_id = ff_codec_get_id(ff_nut_subtitle_tags, tmp);
+ break;
+ case 3:
+ st->codecpar->codec_type = AVMEDIA_TYPE_DATA;
+ st->codecpar->codec_id = ff_codec_get_id(ff_nut_data_tags, tmp);
+ break;
+ default:
+ av_log(s, AV_LOG_ERROR, "unknown stream class (%d)\n", class);
+ return AVERROR(ENOSYS);
}
- if(class<3 && st->codec->codec_id == CODEC_ID_NONE)
- av_log(s, AV_LOG_ERROR, "Unknown codec?!\n");
-
- 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);
- 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
-
- 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);
- }
-
- if (st->codec->codec_type == CODEC_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);
- return -1;
+ if (class < 3 && st->codecpar->codec_id == AV_CODEC_ID_NONE)
+ 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 = ffio_read_varlen(bc);
+ GET_V(stc->decode_delay, tmp < 1000); // sanity limit, raise this if Moore's law is true
+ ffio_read_varlen(bc); // stream flags
+
+ GET_V(st->codecpar->extradata_size, tmp < (1 << 30));
+ if (st->codecpar->extradata_size) {
+ st->codecpar->extradata = av_mallocz(st->codecpar->extradata_size +
+ AV_INPUT_BUFFER_PADDING_SIZE);
+ if (!st->codecpar->extradata)
+ return AVERROR(ENOMEM);
+ avio_read(bc, st->codecpar->extradata, st->codecpar->extradata_size);
+ }
+
+ if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
+ GET_V(st->codecpar->width, tmp > 0);
+ GET_V(st->codecpar->height, tmp > 0);
+ 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 AVERROR_INVALIDDATA;
}
- ff_get_v(bc); /* csp type */
- }else if (st->codec->codec_type == CODEC_TYPE_AUDIO){
- GET_V(st->codec->sample_rate , tmp > 0)
- ff_get_v(bc); // samplerate_den
- GET_V(st->codec->channels, tmp > 0)
- }
- if(skip_reserved(bc, end) || get_checksum(bc)){
- av_log(s, AV_LOG_ERROR, "stream header %d checksum mismatch\n", stream_id);
- return -1;
+ ffio_read_varlen(bc); /* csp type */
+ } else if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
+ GET_V(st->codecpar->sample_rate, tmp > 0);
+ ffio_read_varlen(bc); // samplerate_den
+ GET_V(st->codecpar->channels, tmp > 0);
+ }
+ if (skip_reserved(bc, end) || ffio_get_checksum(bc)) {
+ av_log(s, AV_LOG_ERROR,
+ "stream header %d checksum mismatch\n", stream_id);
+ return AVERROR_INVALIDDATA;
}
- stc->time_base= &nut->time_base[stc->time_base_id];
- av_set_pts_info(s->streams[stream_id], 63, stc->time_base->num, stc->time_base->den);
+ stc->time_base = &nut->time_base[stc->time_base_id];
+ avpriv_set_pts_info(s->streams[stream_id], 63, stc->time_base->num,
+ stc->time_base->den);
return 0;
}
-static void set_disposition_bits(AVFormatContext* avf, char* value, int stream_id){
+static void set_disposition_bits(AVFormatContext *avf, char *value,
+ int stream_id)
+{
int flag = 0, i;
- for (i=0; ff_nut_dispositions[i].flag; ++i) {
+
+ for (i = 0; ff_nut_dispositions[i].flag; ++i)
if (!strcmp(ff_nut_dispositions[i].str, value))
flag = ff_nut_dispositions[i].flag;
- }
if (!flag)
av_log(avf, AV_LOG_INFO, "unknown disposition type '%s'\n", value);
for (i = 0; i < avf->nb_streams; ++i)
avf->streams[i]->disposition |= flag;
}
-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;
+static int decode_info_header(NUTContext *nut)
+{
+ AVFormatContext *s = nut->avf;
+ 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;
+ int *event_flags = NULL;
+ AVChapter *chapter = NULL;
+ AVStream *st = NULL;
+ AVDictionary **metadata = NULL;
+ int metadata_flag = 0;
+
+ end = get_packetheader(nut, bc, 1, INFO_STARTCODE);
+ end += avio_tell(bc);
+
+ GET_V(stream_id_plus1, tmp <= s->nb_streams);
+ chapter_id = get_s(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 = avpriv_new_chapter(s, chapter_id,
+ nut->time_base[chapter_start %
+ nut->time_base_count],
+ start, start + chapter_len, NULL);
+ if (!chapter) {
+ av_log(s, AV_LOG_ERROR, "Could not create chapter.\n");
+ return AVERROR(ENOMEM);
+ }
+ metadata = &chapter->metadata;
+ } else if (stream_id_plus1) {
+ st = s->streams[stream_id_plus1 - 1];
+ metadata = &st->metadata;
+ event_flags = &st->event_flags;
+ metadata_flag = AVSTREAM_EVENT_FLAG_METADATA_UPDATED;
+ } else {
+ metadata = &s->metadata;
+ event_flags = &s->event_flags;
+ metadata_flag = AVFMT_EVENT_FLAG_METADATA_UPDATED;
+ }
- end= get_packetheader(nut, bc, 1, INFO_STARTCODE);
- end += url_ftell(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);
- for(i=0; i<count; i++){
+ for (i = 0; i < count; i++) {
get_str(bc, name, sizeof(name));
- value= get_s(bc);
- if(value == -1){
- type= "UTF-8";
+ value = get_s(bc);
+ if (value == -1) {
+ type = "UTF-8";
get_str(bc, str_value, sizeof(str_value));
- }else if(value == -2){
+ } else if (value == -2) {
get_str(bc, type_str, sizeof(type_str));
- type= type_str;
+ type = type_str;
get_str(bc, str_value, sizeof(str_value));
- }else if(value == -3){
- type= "s";
- value= get_s(bc);
- }else if(value == -4){
- type= "t";
- value= ff_get_v(bc);
- }else if(value < -4){
- type= "r";
+ } else if (value == -3) {
+ type = "s";
+ value = get_s(bc);
+ } else if (value == -4) {
+ type = "t";
+ value = ffio_read_varlen(bc);
+ } else if (value < -4) {
+ type = "r";
get_s(bc);
- }else{
- type= "v";
+ } else {
+ type = "v";
}
- if (stream_id_plus1 < 0 || stream_id_plus1 > s->nb_streams) {
- av_log(s, AV_LOG_ERROR, "invalid stream id for info packet\n");
+ if (stream_id_plus1 > s->nb_streams) {
+ av_log(s, AV_LOG_WARNING,
+ "invalid stream id %d for info packet\n",
+ stream_id_plus1);
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);
+ continue;
+ }
+ if (metadata && av_strcasecmp(name, "Uses") &&
+ av_strcasecmp(name, "Depends") && av_strcasecmp(name, "Replaces")) {
+ if (event_flags)
+ *event_flags |= metadata_flag;
+ 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;
+ return AVERROR_INVALIDDATA;
}
return 0;
}
-static int decode_syncpoint(NUTContext *nut, int64_t *ts, int64_t *back_ptr){
- AVFormatContext *s= nut->avf;
- ByteIOContext *bc = s->pb;
+static int decode_syncpoint(NUTContext *nut, int64_t *ts, int64_t *back_ptr)
+{
+ AVFormatContext *s = nut->avf;
+ AVIOContext *bc = s->pb;
int64_t end, tmp;
+ int ret;
- 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 = 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);
- if(*back_ptr < 0)
+ 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);
+ ff_nut_reset_ts(nut, nut->time_base[tmp % nut->time_base_count],
+ tmp / nut->time_base_count);
+
+ if (nut->flags & NUT_BROADCAST) {
+ tmp = ffio_read_varlen(bc);
+ av_log(s, AV_LOG_VERBOSE, "Syncpoint wallclock %"PRId64"\n",
+ av_rescale_q(tmp / nut->time_base_count,
+ nut->time_base[tmp % nut->time_base_count],
+ AV_TIME_BASE_Q));
+ }
- 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;
+ return AVERROR_INVALIDDATA;
}
- *ts= tmp / s->nb_streams * av_q2d(nut->time_base[tmp % s->nb_streams])*AV_TIME_BASE;
- ff_nut_add_sp(nut, nut->last_syncpoint_pos, *back_ptr, *ts);
+ *ts = tmp / s->nb_streams *
+ av_q2d(nut->time_base[tmp % s->nb_streams]) * AV_TIME_BASE;
+
+ if ((ret = ff_nut_add_sp(nut, nut->last_syncpoint_pos, *back_ptr, *ts)) < 0)
+ return ret;
return 0;
}
-static int find_and_decode_index(NUTContext *nut){
- AVFormatContext *s= nut->avf;
- ByteIOContext *bc = s->pb;
+static int find_and_decode_index(NUTContext *nut)
+{
+ AVFormatContext *s = nut->avf;
+ 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 = AVERROR_INVALIDDATA;
- url_fseek(bc, filesize-12, SEEK_SET);
- url_fseek(bc, filesize-get_be64(bc), SEEK_SET);
- if(get_be64(bc) != INDEX_STARTCODE){
- av_log(s, AV_LOG_ERROR, "no index at the end\n");
- return -1;
+ 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_WARNING, "no index at the end\n");
+ return ret;
+ }
+
+ end = get_packetheader(nut, bc, 1, INDEX_STARTCODE);
+ end += avio_tell(bc);
+
+ 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));
+ if (!syncpoints || !has_keyframe) {
+ ret = AVERROR(ENOMEM);
+ goto fail;
+ }
+ for (i = 0; i < syncpoint_count; i++) {
+ syncpoints[i] = ffio_read_varlen(bc);
+ if (syncpoints[i] <= 0)
+ goto fail;
+ if (i)
+ syncpoints[i] += syncpoints[i - 1];
}
- end= get_packetheader(nut, bc, 1, INDEX_STARTCODE);
- end += url_ftell(bc);
-
- ff_get_v(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++){
- GET_V(syncpoints[i], tmp>0)
- if(i)
- syncpoints[i] += syncpoints[i-1];
- }
-
- 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);
- int type= x&1;
- int n= j;
- x>>=1;
- if(type){
- int flag= x&1;
- x>>=1;
- if(n+x >= syncpoint_count + 1){
+ for (i = 0; i < s->nb_streams; i++) {
+ int64_t last_pts = -1;
+ for (j = 0; j < syncpoint_count;) {
+ uint64_t x = ffio_read_varlen(bc);
+ int type = x & 1;
+ int n = j;
+ x >>= 1;
+ if (type) {
+ int flag = x & 1;
+ x >>= 1;
+ if (n + x >= syncpoint_count + 1) {
av_log(s, AV_LOG_ERROR, "index overflow A\n");
- return -1;
+ goto fail;
}
- while(x--)
- has_keyframe[n++]= flag;
- has_keyframe[n++]= !flag;
- }else{
- while(x != 1){
- if(n>=syncpoint_count + 1){
+ while (x--)
+ has_keyframe[n++] = flag;
+ has_keyframe[n++] = !flag;
+ } else {
+ while (x != 1) {
+ if (n >= syncpoint_count + 1) {
av_log(s, AV_LOG_ERROR, "index overflow B\n");
- return -1;
+ goto fail;
}
- has_keyframe[n++]= x&1;
- x>>=1;
+ has_keyframe[n++] = x & 1;
+ x >>= 1;
}
}
- if(has_keyframe[0]){
+ if (has_keyframe[0]) {
av_log(s, AV_LOG_ERROR, "keyframe before first syncpoint in index\n");
- return -1;
+ goto fail;
}
- assert(n<=syncpoint_count+1);
- for(; j<n && j<syncpoint_count; j++){
- if(has_keyframe[j]){
- uint64_t B, A= ff_get_v(bc);
- if(!A){
- A= ff_get_v(bc);
- B= ff_get_v(bc);
- //eor_pts[j][i] = last_pts + A + B
- }else
- B= 0;
- av_add_index_entry(
- s->streams[i],
- 16*syncpoints[j-1],
- last_pts + A,
- 0,
- 0,
- AVINDEX_KEYFRAME);
+ assert(n <= syncpoint_count + 1);
+ for (; j < n && j < syncpoint_count; j++) {
+ if (has_keyframe[j]) {
+ uint64_t B, A = ffio_read_varlen(bc);
+ if (!A) {
+ A = ffio_read_varlen(bc);
+ B = ffio_read_varlen(bc);
+ // eor_pts[j][i] = last_pts + A + B
+ } else
+ B = 0;
+ av_add_index_entry(s->streams[i], 16 * syncpoints[j - 1],
+ last_pts + A, 0, 0, AVINDEX_KEYFRAME);
last_pts += A + B;
}
}
}
}
- 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");
- return -1;
+ goto fail;
}
+ ret = 0;
+
+fail:
+ av_free(syncpoints);
+ av_free(has_keyframe);
+ return ret;
+}
+
+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;
}
-static int nut_read_header(AVFormatContext *s, AVFormatParameters *ap)
+static int nut_read_header(AVFormatContext *s)
{
NUTContext *nut = s->priv_data;
- ByteIOContext *bc = s->pb;
+ AVIOContext *bc = s->pb;
int64_t pos;
int initialized_stream_count;
- nut->avf= s;
+ nut->avf = s;
/* main header */
- pos=0;
- do{
- pos= find_startcode(bc, MAIN_STARTCODE, pos)+1;
- if (pos<0+1){
+ pos = 0;
+ do {
+ 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;
+ goto fail;
}
- }while(decode_main_header(nut) < 0);
+ } while (decode_main_header(nut) < 0);
/* stream headers */
- pos=0;
- for(initialized_stream_count=0; initialized_stream_count < s->nb_streams;){
- pos= find_startcode(bc, STREAM_STARTCODE, pos)+1;
- if (pos<0+1){
+ pos = 0;
+ for (initialized_stream_count = 0; initialized_stream_count < s->nb_streams;) {
+ 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;
+ goto fail;
}
- if(decode_stream_header(nut) >= 0)
+ if (decode_stream_header(nut) >= 0)
initialized_stream_count++;
}
/* info headers */
- pos=0;
- for(;;){
- uint64_t startcode= find_any_startcode(bc, pos);
- pos= url_ftell(bc);
+ pos = 0;
+ for (;;) {
+ uint64_t startcode = find_any_startcode(bc, pos);
+ pos = avio_tell(bc);
- if(startcode==0){
+ if (startcode == 0) {
av_log(s, AV_LOG_ERROR, "EOF before video frames\n");
- return -1;
- }else if(startcode == SYNCPOINT_STARTCODE){
- nut->next_startcode= startcode;
+ goto fail;
+ } else if (startcode == SYNCPOINT_STARTCODE) {
+ nut->next_startcode = startcode;
break;
- }else if(startcode != INFO_STARTCODE){
+ } else if (startcode != INFO_STARTCODE) {
continue;
}
decode_info_header(nut);
}
- s->data_offset= pos-8;
+ s->internal->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;
+
+fail:
+ nut_read_close(s);
+
+ return AVERROR_INVALIDDATA;
}
-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;
+static int decode_frame_header(NUTContext *nut, int64_t *pts, int *stream_id,
+ uint8_t *header_idx, int frame_code)
+{
+ AVFormatContext *s = nut->avf;
+ 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 (!(nut->flags & NUT_PIPE) &&
+ 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;
reserved_count = nut->frame_code[frame_code].reserved_count;
*header_idx = nut->frame_code[frame_code].header_idx;
- if(flags & FLAG_INVALID)
- return -1;
- if(flags & FLAG_CODED)
- flags ^= ff_get_v(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);
-//FIXME check last_pts validity?
- if(coded_pts < (1<<stc->msb_pts_shift)){
- *pts=ff_lsb2full(stc, coded_pts);
- }else
- *pts=coded_pts - (1<<stc->msb_pts_shift);
- }else
- *pts= stc->last_pts + pts_delta;
- if(flags&FLAG_SIZE_MSB){
- size += size_mul*ff_get_v(bc);
- }
- if(flags&FLAG_MATCH_TIME)
+ if (flags & FLAG_INVALID)
+ return AVERROR_INVALIDDATA;
+ if (flags & FLAG_CODED)
+ 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 = 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 = coded_pts - (1 << stc->msb_pts_shift);
+ } else
+ *pts = stc->last_pts + pts_delta;
+ if (flags & FLAG_SIZE_MSB)
+ 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);
- if(flags&FLAG_RESERVED)
- reserved_count= ff_get_v(bc);
- for(i=0; i<reserved_count; i++)
- ff_get_v(bc);
-
- if(*header_idx >= (unsigned)nut->header_count){
+ if (flags & FLAG_HEADER_IDX)
+ *header_idx = ffio_read_varlen(bc);
+ if (flags & FLAG_RESERVED)
+ reserved_count = ffio_read_varlen(bc);
+ for (i = 0; i < reserved_count; i++)
+ 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;
+ if (size > 4096)
+ *header_idx = 0;
size -= nut->header_len[*header_idx];
- if(flags&FLAG_CHECKSUM){
- get_be32(bc); //FIXME check this
- }else if(size > 2*nut->max_distance || FFABS(stc->last_pts - *pts) > stc->max_pts_distance){
+ if (flags & FLAG_CHECKSUM) {
+ avio_rb32(bc); // FIXME check this
+ } else if (!(nut->flags & NUT_PIPE) &&
+ 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;
- stc->last_flags= flags;
+ stc->last_pts = *pts;
+ stc->last_flags = flags;
return size;
}
-static int decode_frame(NUTContext *nut, AVPacket *pkt, int frame_code){
- AVFormatContext *s= nut->avf;
- ByteIOContext *bc = s->pb;
- int size, stream_id, discard;
+static int decode_frame(NUTContext *nut, AVPacket *pkt, int frame_code)
+{
+ AVFormatContext *s = nut->avf;
+ AVIOContext *bc = s->pb;
+ int size, stream_id, discard, ret;
int64_t pts, last_IP_pts;
StreamContext *stc;
uint8_t header_idx;
- size= decode_frame_header(nut, &pts, &stream_id, &header_idx, frame_code);
- if(size < 0)
- return -1;
+ size = decode_frame_header(nut, &pts, &stream_id, &header_idx, frame_code);
+ if (size < 0)
+ return size;
- stc= &nut->stream[stream_id];
+ stc = &nut->stream[stream_id];
if (stc->last_flags & FLAG_KEY)
- stc->skip_until_key_frame=0;
-
- discard= s->streams[ stream_id ]->discard;
- last_IP_pts= s->streams[ stream_id ]->last_IP_pts;
- if( (discard >= AVDISCARD_NONKEY && !(stc->last_flags & FLAG_KEY))
- ||(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);
+ stc->skip_until_key_frame = 0;
+
+ discard = s->streams[stream_id]->discard;
+ last_IP_pts = s->streams[stream_id]->last_IP_pts;
+ if ((discard >= AVDISCARD_NONKEY && !(stc->last_flags & FLAG_KEY)) ||
+ (discard >= AVDISCARD_BIDIR && last_IP_pts != AV_NOPTS_VALUE &&
+ last_IP_pts > pts) ||
+ discard >= AVDISCARD_ALL ||
+ stc->skip_until_key_frame) {
+ 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);
+ ret = av_new_packet(pkt, size + nut->header_len[header_idx]);
+ if (ret < 0)
+ return ret;
+ if (nut->header[header_idx])
+ memcpy(pkt->data, nut->header[header_idx], nut->header_len[header_idx]);
+ 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;
- int i, frame_code=0, ret, skip;
+ AVIOContext *bc = s->pb;
+ int i, frame_code = 0, ret, skip;
int64_t ts, back_ptr;
- for(;;){
- int64_t pos= url_ftell(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))
- return -1;
- if(frame_code == 'N'){
- tmp= frame_code;
- for(i=1; i<8; i++)
- tmp = (tmp<<8) + get_byte(bc);
+ for (;;) {
+ int64_t pos = avio_tell(bc);
+ uint64_t tmp = nut->next_startcode;
+ nut->next_startcode = 0;
+
+ if (tmp) {
+ pos -= 8;
+ } else {
+ frame_code = avio_r8(bc);
+ if (bc->eof_reached)
+ return AVERROR_EOF;
+ if (frame_code == 'N') {
+ tmp = frame_code;
+ for (i = 1; i < 8; i++)
+ tmp = (tmp << 8) + avio_r8(bc);
}
}
- switch(tmp){
+ switch (tmp) {
case MAIN_STARTCODE:
case STREAM_STARTCODE:
case INDEX_STARTCODE:
- skip= get_packetheader(nut, bc, 0, tmp);
- url_fseek(bc, skip, SEEK_CUR);
+ skip = get_packetheader(nut, bc, 0, tmp);
+ avio_skip(bc, skip);
break;
case INFO_STARTCODE:
- if(decode_info_header(nut)<0)
+ if (decode_info_header(nut) < 0)
goto resync;
break;
case SYNCPOINT_STARTCODE:
- if(decode_syncpoint(nut, &ts, &back_ptr)<0)
+ 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)
+ ret = decode_frame(nut, pkt, frame_code);
+ if (ret == 0)
return 0;
- else if(ret==1) //ok but discard packet
+ else if (ret == 1) // OK but discard packet
break;
default:
resync:
-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;
-av_log(s, AV_LOG_DEBUG, "sync\n");
- nut->next_startcode= tmp;
+ 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 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){
+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);
+ av_log(s, AV_LOG_DEBUG, "read_timestamp(X,%d,%"PRId64",%"PRId64")\n",
+ stream_index, *pos_arg, pos_limit);
- pos= *pos_arg;
- do{
- pos= find_startcode(bc, SYNCPOINT_STARTCODE, pos)+1;
- if(pos < 1){
+ pos = *pos_arg;
+ do {
+ pos = find_startcode(bc, SYNCPOINT_STARTCODE, pos) + 1;
+ if (pos < 1) {
assert(nut->next_startcode == 0);
av_log(s, AV_LOG_ERROR, "read_timestamp failed.\n");
return AV_NOPTS_VALUE;
}
- }while(decode_syncpoint(nut, &pts, &back_ptr) < 0);
- *pos_arg = pos-1;
+ } while (decode_syncpoint(nut, &pts, &back_ptr) < 0);
+ *pos_arg = pos - 1;
assert(nut->last_syncpoint_pos == *pos_arg);
- av_log(s, AV_LOG_DEBUG, "return %"PRId64" %"PRId64"\n", pts,back_ptr );
- if (stream_index == -1) return pts;
- else if(stream_index == -2) return back_ptr;
+ av_log(s, AV_LOG_DEBUG, "return %"PRId64" %"PRId64"\n", pts, back_ptr);
+ if (stream_index == -1)
+ return pts;
+ else if (stream_index == -2)
+ return back_ptr;
-assert(0);
+ return AV_NOPTS_VALUE;
}
-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};
+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 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;
- if(st->index_entries){
- int index= av_index_search_timestamp(st, pts, flags);
- if(index<0)
+ if (nut->flags & NUT_PIPE) {
+ return AVERROR(ENOSYS);
+ }
+
+ if (st->index_entries) {
+ int index = av_index_search_timestamp(st, pts, flags);
+ if (index < 0)
return -1;
- 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_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,
- next_node[0]->ts , next_node[1]->ts, AVSEEK_FLAG_BACKWARD, &ts, nut_read_timestamp);
-
- 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);
- 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)
- pos= pos2;
- //FIXME dir but I think it does not matter
+ pos2 = st->index_entries[index].pos;
+ ts = st->index_entries[index].timestamp;
+ } else {
+ 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 = ff_gen_search(s, -1, dummy.ts, next_node[0]->pos,
+ next_node[1]->pos, next_node[1]->pos,
+ next_node[0]->ts, next_node[1]->ts,
+ AVSEEK_FLAG_BACKWARD, &ts, nut_read_timestamp);
+
+ if (!(flags & AVSEEK_FLAG_BACKWARD)) {
+ dummy.pos = pos + 16;
+ next_node[1] = &nopts_sp;
+ av_tree_find(nut->syncpoints, &dummy, (void *) ff_nut_sp_pos_cmp,
+ (void **) next_node);
+ pos2 = ff_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)
+ pos = pos2;
+ // 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);
+ dummy.pos = pos;
+ sp = av_tree_find(nut->syncpoints, &dummy, (void *) ff_nut_sp_pos_cmp,
+ NULL);
assert(sp);
- pos2= sp->back_ptr - 15;
+ 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);
+ pos = find_startcode(s->pb, SYNCPOINT_STARTCODE, pos2);
+ avio_seek(s->pb, pos, SEEK_SET);
av_log(NULL, AV_LOG_DEBUG, "SP: %"PRId64"\n", pos);
- if(pos2 > pos || pos2 + 15 < pos){
+ if (pos2 > pos || pos2 + 15 < pos)
av_log(NULL, AV_LOG_ERROR, "no syncpoint at backptr pos\n");
- }
- for(i=0; i<s->nb_streams; i++)
- nut->stream[i].skip_until_key_frame=1;
-
- return 0;
-}
-
-static int nut_read_close(AVFormatContext *s)
-{
- NUTContext *nut = s->priv_data;
-
- av_freep(&nut->time_base);
- av_freep(&nut->stream);
+ for (i = 0; i < s->nb_streams; i++)
+ nut->stream[i].skip_until_key_frame = 1;
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,
- .extensions = "nut",
+AVInputFormat ff_nut_demuxer = {
+ .name = "nut",
+ .long_name = NULL_IF_CONFIG_SMALL("NUT"),
+ .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 = ff_nut_codec_tags,
};
-#endif
projects / ffmpeg / blobdiff