diff options
Diffstat (limited to 'libavformat/nutdec.c')
-rw-r--r-- | libavformat/nutdec.c | 936 |
1 files changed, 500 insertions, 436 deletions
diff --git a/libavformat/nutdec.c b/libavformat/nutdec.c index a2104f1..32db763 100644 --- a/libavformat/nutdec.c +++ b/libavformat/nutdec.c @@ -33,79 +33,97 @@ #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); +static int get_str(AVIOContext *bc, char *string, unsigned int maxlen) +{ + unsigned int len = ffio_read_varlen(bc); - if(len && maxlen) + if (len && maxlen) avio_read(bc, string, FFMIN(len, maxlen)); - while(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(AVIOContext *bc){ +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(AVIOContext *bc){ - unsigned int len= ffio_read_varlen(bc); +static uint64_t get_fourcc(AVIOContext *bc) +{ + unsigned int len = ffio_read_varlen(bc); - if (len==2) return avio_rl16(bc); - else if(len==4) return avio_rl32(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(AVIOContext *bc, char *file, char *func, int line){ - uint64_t v= ffio_read_varlen(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); + 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(AVIOContext *bc, char *file, char *func, int line){ - int64_t v= get_s(bc); +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); + 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(AVIOContext *bc, char *file, char *func, int line){ - uint64_t v= get_vb(bc); +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); + av_log(NULL, AV_LOG_DEBUG, "get_vb %5"PRId64" / %"PRIX64" in %s %s:%d\n", + v, v, file, func, line); return v; } -#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__) +#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, AVIOContext *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= avio_tell(bc) - 8; +// start = avio_tell(bc) - 8; - startcode= av_be2ne64(startcode); - startcode= ff_crc04C11DB7_update(0, (uint8_t*)&startcode, 8); + startcode = av_be2ne64(startcode); + startcode = ff_crc04C11DB7_update(0, (uint8_t*) &startcode, 8); ffio_init_checksum(bc, ff_crc04C11DB7_update, startcode); - size= ffio_read_varlen(bc); - if(size > 4096) + size = ffio_read_varlen(bc); + if (size > 4096) avio_rb32(bc); - if(ffio_get_checksum(bc) && size > 4096) + if (ffio_get_checksum(bc) && size > 4096) return -1; ffio_init_checksum(bc, calculate_checksum ? ff_crc04C11DB7_update : NULL, 0); @@ -113,17 +131,19 @@ static int get_packetheader(NUTContext *nut, AVIOContext *bc, int calculate_chec return size; } -static uint64_t find_any_startcode(AVIOContext *bc, int64_t pos){ - uint64_t state=0; - - if(pos >= 0) - avio_seek(bc, pos, SEEK_SET); //note, this may fail if the stream is not seekable, but that should not matter, as in this case we simply start where we currently are - - while(!bc->eof_reached){ - state= (state<<8) | avio_r8(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: @@ -142,20 +162,22 @@ static uint64_t find_any_startcode(AVIOContext *bc, int64_t pos){ * @param pos the start position of the search, or -1 if the current position * @return the position of the startcode or -1 if not found */ -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) +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) + 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]; @@ -165,225 +187,248 @@ static int nut_probe(AVProbeData *p){ return 0; } -#define GET_V(dst, check) \ - tmp= ffio_read_varlen(bc);\ - if(!(check)){\ - av_log(s, AV_LOG_ERROR, "Error " #dst " is (%"PRId64")\n", tmp);\ - return -1;\ - }\ - dst= tmp; +#define GET_V(dst, check) \ + 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(AVIOContext *bc, int64_t pos){ +static int skip_reserved(AVIOContext *bc, int64_t pos) +{ pos -= avio_tell(bc); - if(pos<0){ + if (pos < 0) { avio_seek(bc, pos, SEEK_CUR); return -1; - }else{ - while(pos--) + } else { + while (pos--) avio_r8(bc); return 0; } } -static int decode_main_header(NUTContext *nut){ - AVFormatContext *s= nut->avf; - AVIOContext *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; + 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 = get_packetheader(nut, bc, 1, MAIN_STARTCODE); end += avio_tell(bc); - GET_V(tmp , tmp >=2 && tmp <= 3) - GET_V(stream_count , tmp > 0 && tmp <= NUT_MAX_STREAMS) + GET_V(tmp, tmp >= 2 && tmp <= 3) + GET_V(stream_count, tmp > 0 && tmp <= NUT_MAX_STREAMS) nut->max_distance = ffio_read_varlen(bc); - if(nut->max_distance > 65536){ + 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)); - 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){ + 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, "time base invalid\n"); return AVERROR_INVALIDDATA; } } - 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){ + 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 AVERROR_INVALIDDATA; } - if(tmp_stream >= stream_count){ + if (tmp_stream >= stream_count) { av_log(s, AV_LOG_ERROR, "illegal stream number\n"); 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 > avio_tell(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); + 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){ + if (rem < 0) { av_log(s, AV_LOG_ERROR, "invalid elision header\n"); return AVERROR_INVALIDDATA; } - nut->header[i]= av_malloc(nut->header_len[i]); + nut->header[i] = av_malloc(nut->header_len[i]); avio_read(bc, nut->header[i], nut->header_len[i]); } - assert(nut->header_len[0]==0); + assert(nut->header_len[0] == 0); } - if(skip_reserved(bc, end) || ffio_get_checksum(bc)){ + 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); - for(i=0; i<stream_count; i++){ + nut->stream = av_mallocz(sizeof(StreamContext) * stream_count); + 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; - AVIOContext *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 = 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 = ffio_read_varlen(bc); - tmp = get_fourcc(bc); - st->codec->codec_tag= tmp; - switch(class) - { - case 0: - 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 = AVMEDIA_TYPE_AUDIO; - st->codec->codec_id = ff_codec_get_id(ff_codec_wav_tags, tmp); - break; - case 2: - 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 = AVMEDIA_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->codec->codec_tag = tmp; + switch (class) { + case 0: + 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 = AVMEDIA_TYPE_AUDIO; + st->codec->codec_id = ff_codec_get_id(ff_codec_wav_tags, tmp); + break; + case 2: + 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 = 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 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 - st->codec->has_b_frames= stc->decode_delay; - 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); + if (class < 3 && st->codec->codec_id == 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 + st->codec->has_b_frames = stc->decode_delay; + 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); avio_read(bc, st->codec->extradata, st->codec->extradata_size); } - if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO){ - GET_V(st->codec->width , tmp > 0) + if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) { + GET_V(st->codec->width, tmp > 0) GET_V(st->codec->height, tmp > 0) - st->sample_aspect_ratio.num= 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); + 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; } ffio_read_varlen(bc); /* csp type */ - }else if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO){ - GET_V(st->codec->sample_rate , tmp > 0) + } else if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) { + GET_V(st->codec->sample_rate, tmp > 0) ffio_read_varlen(bc); // samplerate_den GET_V(st->codec->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); + 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; } - 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); + 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) @@ -391,61 +436,63 @@ static void set_disposition_bits(AVFormatContext* avf, char* value, int stream_i avf->streams[i]->disposition |= flag; } -static int decode_info_header(NUTContext *nut){ - AVFormatContext *s= nut->avf; - AVIOContext *bc = s->pb; +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; - AVChapter *chapter= NULL; - AVStream *st= NULL; + AVChapter *chapter = NULL; + AVStream *st = NULL; AVDictionary **metadata = NULL; - end= get_packetheader(nut, bc, 1, INFO_STARTCODE); + 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); + 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); metadata = &chapter->metadata; - } else if(stream_id_plus1) { - st= s->streams[stream_id_plus1 - 1]; + } 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++){ + 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= ffio_read_varlen(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 > s->nb_streams) { @@ -453,143 +500,143 @@ static int decode_info_header(NUTContext *nut){ continue; } - if(!strcmp(type, "UTF-8")){ - if(chapter_id==0 && !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 (metadata && av_strcasecmp(name, "Uses") && + av_strcasecmp(name, "Depends") && av_strcasecmp(name, "Replaces")) av_dict_set(metadata, name, str_value, 0); } } - if(skip_reserved(bc, end) || ffio_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 0; } -static int decode_syncpoint(NUTContext *nut, int64_t *ts, int64_t *back_ptr){ - AVFormatContext *s= nut->avf; - AVIOContext *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; - nut->last_syncpoint_pos= avio_tell(bc)-8; + nut->last_syncpoint_pos = avio_tell(bc) - 8; - end= get_packetheader(nut, bc, 1, SYNCPOINT_STARTCODE); + end = get_packetheader(nut, bc, 1, SYNCPOINT_STARTCODE); end += avio_tell(bc); - tmp= ffio_read_varlen(bc); - *back_ptr= nut->last_syncpoint_pos - 16*ffio_read_varlen(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(skip_reserved(bc, end) || ffio_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; } - *ts= tmp / s->nb_streams * av_q2d(nut->time_base[tmp % s->nb_streams])*AV_TIME_BASE; + *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); return 0; } -static int find_and_decode_index(NUTContext *nut){ - AVFormatContext *s= nut->avf; - AVIOContext *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= avio_size(bc); + int64_t filesize = avio_size(bc); int64_t *syncpoints; int8_t *has_keyframe; - int ret= -1; + int ret = -1; - avio_seek(bc, filesize-12, SEEK_SET); - avio_seek(bc, filesize-avio_rb64(bc), SEEK_SET); - if(avio_rb64(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 = 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)); - for(i=0; i<syncpoint_count; i++){ + 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] = ffio_read_varlen(bc); - if(syncpoints[i] <= 0) + if (syncpoints[i] <= 0) goto fail; - 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= 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){ + 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 = 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"); 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"); 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"); goto fail; } - 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); + 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) || ffio_get_checksum(bc)){ + if (skip_reserved(bc, end) || ffio_get_checksum(bc)) { av_log(s, AV_LOG_ERROR, "index checksum mismatch\n"); goto fail; } - ret= 0; + ret = 0; + fail: av_free(syncpoints); av_free(has_keyframe); @@ -603,53 +650,53 @@ static int nut_read_header(AVFormatContext *s) 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 AVERROR_INVALIDDATA; } - }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 AVERROR_INVALIDDATA; } - 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= avio_tell(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 AVERROR_INVALIDDATA; - }else if(startcode == SYNCPOINT_STARTCODE){ - nut->next_startcode= startcode; + } 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->data_offset = pos - 8; - if(bc->seekable){ - int64_t orig_pos= avio_tell(bc); + if (bc->seekable) { + int64_t orig_pos = avio_tell(bc); find_and_decode_index(nut); avio_seek(bc, orig_pos, SEEK_SET); } @@ -660,15 +707,19 @@ static int nut_read_header(AVFormatContext *s) 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; - AVIOContext *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(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); + 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; } @@ -680,86 +731,88 @@ static int decode_frame_header(NUTContext *nut, int64_t *pts, int *stream_id, ui reserved_count = nut->frame_code[frame_code].reserved_count; *header_idx = nut->frame_code[frame_code].header_idx; - if(flags & FLAG_INVALID) + if (flags & FLAG_INVALID) return AVERROR_INVALIDDATA; - if(flags & FLAG_CODED) + if (flags & FLAG_CODED) flags ^= ffio_read_varlen(bc); - if(flags & FLAG_STREAM_ID){ + 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) + 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= ffio_read_varlen(bc); - if(flags&FLAG_RESERVED) - reserved_count= ffio_read_varlen(bc); - for(i=0; i<reserved_count; i++) + 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){ + if (*header_idx >= (unsigned)nut->header_count) { av_log(s, AV_LOG_ERROR, "header_idx invalid\n"); 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){ - avio_rb32(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 (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 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; - AVIOContext *bc = s->pb; +static int decode_frame(NUTContext *nut, AVPacket *pkt, int frame_code) +{ + AVFormatContext *s = nut->avf; + AVIOContext *bc = s->pb; int size, stream_id, discard; 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) + 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){ + 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= avio_tell(bc); //FIXME + pkt->pos = avio_tell(bc); // FIXME avio_read(bc, pkt->data + nut->header_len[header_idx], size); pkt->stream_index = stream_id; @@ -774,135 +827,146 @@ static int nut_read_packet(AVFormatContext *s, AVPacket *pkt) { NUTContext *nut = s->priv_data; AVIOContext *bc = s->pb; - int i, frame_code=0, ret, skip; + int i, frame_code = 0, ret, skip; int64_t ts, back_ptr; - for(;;){ - int64_t pos= avio_tell(bc); - uint64_t tmp= nut->next_startcode; - nut->next_startcode=0; + for (;;) { + int64_t pos = avio_tell(bc); + uint64_t tmp = nut->next_startcode; + nut->next_startcode = 0; - if(tmp){ - pos-=8; - }else{ + if (tmp) { + pos -= 8; + } else { frame_code = avio_r8(bc); - if(bc->eof_reached) + if (bc->eof_reached) return -1; - if(frame_code == 'N'){ - tmp= frame_code; - for(i=1; i<8; i++) - tmp = (tmp<<8) + avio_r8(bc); + 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); + 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 = 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) + 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; + 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; 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); + assert(0); } -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}; +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 (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{ + 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_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 + 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, (void *) 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); + 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; + for (i = 0; i < s->nb_streams; i++) + nut->stream[i].skip_until_key_frame = 1; return 0; } @@ -915,7 +979,7 @@ static int nut_read_close(AVFormatContext *s) av_freep(&nut->time_base); av_freep(&nut->stream); ff_nut_free_sp(nut); - for(i = 1; i < nut->header_count; i++) + for (i = 1; i < nut->header_count; i++) av_freep(&nut->header[i]); return 0; |