X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavformat%2Fnut.c;h=9267226ac6323ff393ff2165d847aed7dc5d18bc;hb=39a9fdd00fea6d2e40d4b9ecba38337549603a7d;hp=acb8db9f1225ebfe92d3ef19d1b969fd1b57a168;hpb=7dddf251a2e222488b7e611b04bb3b230b3db336;p=ffmpeg diff --git a/libavformat/nut.c b/libavformat/nut.c index acb8db9f122..9267226ac63 100644 --- a/libavformat/nut.c +++ b/libavformat/nut.c @@ -1,1565 +1,231 @@ /* - * "NUT" Container Format muxer and demuxer (DRAFT-200403??) - * Copyright (c) 2003 Alex Beregszaszi - * Copyright (c) 2004 Michael Niedermayer + * nut + * Copyright (c) 2004-2007 Michael Niedermayer * - * This library is free software; you can redistribute it and/or + * This file is part of Libav. + * + * 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 of the License, or (at your option) any later version. + * version 2.1 of the License, or (at your option) any later version. * - * This library is distributed in the hope that it will be useful, + * 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 General Public - * License along with this library; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - * - * NUT DRAFT can be found in MPlayer CVS at DOCS/tech/mpcf.txt - * - * AND http://people.fsn.hu/~alex/nut/ (TeX, pdf, ps, dvi, ..) - * + * You should have received a copy of the GNU Lesser General Public + * License along with Libav; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ -/* - * TODO: - * - seeking - * - index writing - * - index packet reading support -*/ - -//#define DEBUG 1 - -#include -#include "avformat.h" -#include "mpegaudio.h" -#include "avi.h" - -#undef NDEBUG -#include - -//from /dev/random - -#define MAIN_STARTCODE (0x7A561F5F04ADULL + (((uint64_t)('N'<<8) + 'M')<<48)) -#define STREAM_STARTCODE (0x11405BF2F9DBULL + (((uint64_t)('N'<<8) + 'S')<<48)) -#define KEYFRAME_STARTCODE (0xE4ADEECA4569ULL + (((uint64_t)('N'<<8) + 'K')<<48)) -#define INDEX_STARTCODE (0xDD672F23E64EULL + (((uint64_t)('N'<<8) + 'X')<<48)) -#define INFO_STARTCODE (0xAB68B596BA78ULL + (((uint64_t)('N'<<8) + 'I')<<48)) - -#define MAX_TYPE1_DISTANCE (1024*16-1) -#define MAX_TYPE2_DISTANCE (1024*64-1) - -#define MAX_SIZE_LRU 2 -#define MAX_PTS_LRU 3 - -#define FLAG_FRAME_TYPE 1 -#define FLAG_DATA_SIZE 2 -#define FLAG_PTS 16 -#define FLAG_FULL_PTS 4 -#define FLAG_KEY_FRAME 32 -#define FLAG_PRED_KEY_FRAME 64 - -typedef struct { - uint8_t flags; - uint8_t stream_id_plus1; - uint8_t size_mul; - uint8_t size_lsb; -} FrameCode; - -typedef struct { - int last_key_frame; - int msb_timestamp_shift; - int rate_num; - int rate_den; - int64_t last_pts; - int64_t last_full_pts; - int lru_pts_delta[MAX_PTS_LRU]; - int lru_size[MAX_SIZE_LRU]; - int initial_pts_predictor[MAX_PTS_LRU]; - int initial_size_predictor[MAX_SIZE_LRU]; - int64_t last_sync_pos; ///stream[stream_index]; - const int flags=nut->frame_code[frame_code].flags; - - stream->last_key_frame= key_frame; - nut->last_frame_start[ frame_type ]= frame_start; - if(frame_type == 0) - update_lru(stream->lru_pts_delta, pts - stream->last_pts, 3); - update_lru(stream->lru_size, size, 2); - stream->last_pts= pts; - if((flags & FLAG_PTS) && (flags & FLAG_FULL_PTS)) - stream->last_full_pts= pts; -} - -static void reset(AVFormatContext *s/*, int frame_type*/){ - NUTContext *nut = s->priv_data; - int i; - - for(i=0; inb_streams; i++){ - StreamContext *stream= &nut->stream[i]; - - stream->last_key_frame= 1; - memcpy(stream->lru_pts_delta, stream->initial_pts_predictor, sizeof(int)*MAX_PTS_LRU); - memcpy(stream->lru_size, stream->initial_size_predictor, sizeof(int)*MAX_SIZE_LRU); - } -} - -static void build_frame_code(AVFormatContext *s){ - NUTContext *nut = s->priv_data; - int key_frame, frame_type, full_pts, index, pred, stream_id; - int start=0; - int end= 255; - int keyframe_0_esc= s->nb_streams > 2; - - if(keyframe_0_esc){ - /* keyframe = 0 escapes, 3 codes */ - for(frame_type=0; frame_type<2; frame_type++){ - for(full_pts=frame_type; full_pts<2; full_pts++){ - FrameCode *ft= &nut->frame_code[start]; - ft->flags= FLAG_FRAME_TYPE*frame_type + FLAG_FULL_PTS*full_pts; - ft->flags|= FLAG_DATA_SIZE | FLAG_PTS; - ft->stream_id_plus1= 0; - ft->size_mul=1; - start++; - } - } - } - - for(stream_id= 0; stream_idnb_streams; stream_id++){ - int start2= start + (end-start)*stream_id / s->nb_streams; - int end2 = start + (end-start)*(stream_id+1) / s->nb_streams; - AVCodecContext *codec = &s->streams[stream_id]->codec; - int is_audio= codec->codec_type == CODEC_TYPE_AUDIO; - int intra_only= /*codec->intra_only || */is_audio; - int pred_count; - - for(key_frame=0; key_frame<2; key_frame++){ - if(intra_only && keyframe_0_esc && key_frame==0) - continue; - - for(frame_type=0; frame_type<2; frame_type++){ - for(full_pts=frame_type; full_pts<2; full_pts++){ - FrameCode *ft= &nut->frame_code[start2]; - ft->flags= FLAG_FRAME_TYPE*frame_type + FLAG_FULL_PTS*full_pts + FLAG_KEY_FRAME*key_frame; - ft->flags|= FLAG_DATA_SIZE | FLAG_PTS; - ft->stream_id_plus1= stream_id + 1; - ft->size_mul=1; - start2++; - } - } - } - - key_frame= intra_only; -#if 1 - if(is_audio){ - int frame_bytes= codec->frame_size*(int64_t)codec->bit_rate / (8*codec->sample_rate); - for(pred=0; predframe_code[start2]; - ft->flags= FLAG_KEY_FRAME*key_frame + (FLAG_FULL_PTS+FLAG_PTS+FLAG_FRAME_TYPE)*frame_type; - ft->stream_id_plus1= stream_id + 1; - ft->size_mul=1; - ft->size_lsb=1 + pred; - start2++; - } - nut->stream[stream_id].initial_size_predictor[pred]= frame_bytes + pred; - } - }else{ - FrameCode *ft= &nut->frame_code[start2]; - ft->flags= FLAG_KEY_FRAME | FLAG_DATA_SIZE; - ft->stream_id_plus1= stream_id + 1; - ft->size_mul=1; - start2++; - } -#endif - pred_count= 2 + codec->has_b_frames + (codec->codec_id == CODEC_ID_VORBIS); - for(pred=0; predframe_code[index]; - ft->flags= FLAG_KEY_FRAME*key_frame + pred*4; - ft->flags|= FLAG_DATA_SIZE; - ft->stream_id_plus1= stream_id + 1; -//FIXME use single byte size and pred from last - ft->size_mul= end3-start3; - ft->size_lsb= index - start3; - } - nut->stream[stream_id].initial_pts_predictor[pred]= pred+1; - } - } - memmove(&nut->frame_code['N'+1], &nut->frame_code['N'], sizeof(FrameCode)*(255-'N')); - nut->frame_code['N'].flags= 1; -} - -static uint64_t get_v(ByteIOContext *bc) -{ - uint64_t val = 0; - - for(;;) - { - int tmp = get_byte(bc); - - if (tmp&0x80) - val= (val<<7) + tmp - 0x80; - else - return (val<<7) + tmp; - } - return -1; -} - -static int get_str(ByteIOContext *bc, char *string, int maxlen){ - int len= get_v(bc); - - if(len && maxlen) - get_buffer(bc, string, FFMIN(len, maxlen)); - while(len > maxlen){ - get_byte(bc); - len--; - } - - if(maxlen) - string[FFMIN(len, maxlen-1)]= 0; - - if(maxlen == len) - return -1; - else - return 0; -} - -static uint64_t get_vb(ByteIOContext *bc){ - uint64_t val=0; - int i= get_v(bc); - - if(i>8) - return UINT64_MAX; - - while(i--) - val = (val<<8) + get_byte(bc); - - return val; -} - -static int get_packetheader(NUTContext *nut, ByteIOContext *bc, int prefix_length, int calculate_checksum) -{ - int64_t start, size, last_size; - start= url_ftell(bc) - prefix_length; - - if(nut->written_packet_size >= 0 && start != nut->packet_start + nut->written_packet_size){ - av_log(nut->avf, AV_LOG_ERROR, "get_packetheader called at weird position\n"); - if(prefix_length<8) - return -1; - } - - init_checksum(bc, calculate_checksum ? update_adler32 : NULL, 0); - - size= get_v(bc); - last_size= get_v(bc); - if(nut->written_packet_size >= 0 && nut->written_packet_size != last_size){ - av_log(nut->avf, AV_LOG_ERROR, "packet size missmatch %d != %lld at %lld\n", nut->written_packet_size, last_size, start); - if(prefix_length<8) - return -1; - } - - nut->last_packet_start = nut->packet_start; - nut->packet_start = start; - nut->written_packet_size= size; - - return size; -} - -static int check_checksum(ByteIOContext *bc){ - unsigned long checksum= get_checksum(bc); - return checksum != get_be32(bc); -} - -/** - * - */ -static int get_length(uint64_t val){ - int i; - - for (i=7; val>>i; i+=7); - - return i; -} - -static uint64_t find_any_startcode(ByteIOContext *bc, int64_t pos){ - uint64_t state=0; - - if(pos >= 0) - url_fseek(bc, pos, SEEK_SET); //note, this may fail if the stream isnt seekable, but that shouldnt matter, as in this case we simply start where we are currently - - while(!url_feof(bc)){ - state= (state<<8) | get_byte(bc); - if((state>>56) != 'N') - continue; - switch(state){ - case MAIN_STARTCODE: - case STREAM_STARTCODE: - case KEYFRAME_STARTCODE: - case INFO_STARTCODE: - case INDEX_STARTCODE: - return state; - } - } - - return 0; -} - -/** - * 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 - */ -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) - return -1; - pos=-1; - } -} - -#ifdef CONFIG_ENCODERS -static void put_v(ByteIOContext *bc, uint64_t val) -{ - int i; - - val &= 0x7FFFFFFFFFFFFFFFULL; // FIXME can only encode upto 63 bits currently - i= get_length(val); - - for (i-=7; i>0; i-=7){ - put_byte(bc, 0x80 | (val>>i)); - } - - put_byte(bc, val&0x7f); -} - -/** - * stores a string as vb. - */ -static void put_str(ByteIOContext *bc, const char *string){ - int len= strlen(string); - - put_v(bc, len); - put_buffer(bc, string, len); -} - -static void put_vb(ByteIOContext *bc, uint64_t val){ - int i; - - for (i=8; val>>i; i+=8); - - put_v(bc, i>>3); - for(i-=8; i>=0; i-=8) - put_byte(bc, (val>>i)&0xFF); -} - -static int put_packetheader(NUTContext *nut, ByteIOContext *bc, int max_size, int calculate_checksum) -{ - put_flush_packet(bc); - nut->last_packet_start= nut->packet_start; - nut->packet_start+= nut->written_packet_size; - nut->packet_size_pos = url_ftell(bc); - nut->written_packet_size = max_size; - - if(calculate_checksum) - init_checksum(bc, update_adler32, 0); - - /* packet header */ - put_v(bc, nut->written_packet_size); /* forward ptr */ - put_v(bc, nut->packet_start - nut->last_packet_start); /* backward ptr */ - - return 0; -} - -static int update_packetheader(NUTContext *nut, ByteIOContext *bc, int additional_size, int calculate_checksum){ - int64_t start= nut->packet_start; - int64_t cur= url_ftell(bc); - int size= cur - start + additional_size; - - if(calculate_checksum) - size += 4; - - if(size != nut->written_packet_size){ - int i; - - assert( size <= nut->written_packet_size ); - - url_fseek(bc, nut->packet_size_pos, SEEK_SET); - for(i=get_length(size); i < get_length(nut->written_packet_size); i+=7) - put_byte(bc, 0x80); - put_v(bc, size); - - url_fseek(bc, cur, SEEK_SET); - nut->written_packet_size= size; //FIXME may fail if multiple updates with differing sizes, as get_length may differ - - if(calculate_checksum) - put_be32(bc, get_checksum(bc)); - } - - return 0; -} - -static int nut_write_header(AVFormatContext *s) -{ - NUTContext *nut = s->priv_data; - ByteIOContext *bc = &s->pb; - AVCodecContext *codec; - int i, j; - - nut->avf= s; - - nut->stream = - av_mallocz(sizeof(StreamContext)*s->nb_streams); - - av_set_pts_info(s, 60, 1, AV_TIME_BASE); - - /* main header */ - put_be64(bc, MAIN_STARTCODE); - put_packetheader(nut, bc, 120+5*256, 1); - put_v(bc, 1); /* version */ - put_v(bc, s->nb_streams); - put_v(bc, 3); - - build_frame_code(s); - assert(nut->frame_code['N'].flags == 1); - for(i=0; i<256;){ - int tmp_flags = nut->frame_code[i].flags; - int tmp_stream= nut->frame_code[i].stream_id_plus1; - int tmp_mul = nut->frame_code[i].size_mul; - int tmp_size = nut->frame_code[i].size_lsb; - put_v(bc, tmp_flags); - put_v(bc, tmp_stream); - put_v(bc, tmp_mul); - put_v(bc, tmp_size); - - for(j=0; i<256; j++,i++){ - if(nut->frame_code[i].flags != tmp_flags ) break; - if(nut->frame_code[i].stream_id_plus1 != tmp_stream) break; - if(nut->frame_code[i].size_mul != tmp_mul ) break; - if(nut->frame_code[i].size_lsb != tmp_size ) break; - if(++tmp_size >= tmp_mul){ - tmp_size=0; - tmp_stream++; - } - } - put_v(bc, j); - } - - update_packetheader(nut, bc, 0, 1); - - /* stream headers */ - for (i = 0; i < s->nb_streams; i++) - { - int nom, denom, gcd; - - codec = &s->streams[i]->codec; - - put_be64(bc, STREAM_STARTCODE); - put_packetheader(nut, bc, 120 + codec->extradata_size, 1); - put_v(bc, i /*s->streams[i]->index*/); - put_v(bc, (codec->codec_type == CODEC_TYPE_AUDIO) ? 32 : 0); - if (codec->codec_tag) - put_vb(bc, codec->codec_tag); - else if (codec->codec_type == CODEC_TYPE_VIDEO) - { - put_vb(bc, codec_get_bmp_tag(codec->codec_id)); - } - else if (codec->codec_type == CODEC_TYPE_AUDIO) - { - put_vb(bc, codec_get_wav_tag(codec->codec_id)); - } - else - put_vb(bc, 0); - - if (codec->codec_type == CODEC_TYPE_VIDEO) - { - nom = codec->frame_rate; - denom = codec->frame_rate_base; - } - else - { - nom = codec->sample_rate; - if(codec->frame_size>0) - denom= codec->frame_size; - else - denom= 1; //unlucky - } - gcd= ff_gcd(nom, denom); - nom /= gcd; - denom /= gcd; - nut->stream[i].rate_num= nom; - nut->stream[i].rate_den= denom; - - put_v(bc, codec->bit_rate); - put_vb(bc, 0); /* no language code */ - put_v(bc, nom); - put_v(bc, denom); - if(nom / denom < 1000) - nut->stream[i].msb_timestamp_shift = 7; - else - nut->stream[i].msb_timestamp_shift = 14; - put_v(bc, nut->stream[i].msb_timestamp_shift); - for(j=0; j<3; j++) - put_v(bc, nut->stream[i].initial_pts_predictor[j]); - for(j=0; j<2; j++) - put_v(bc, nut->stream[i].initial_size_predictor[j]); - put_byte(bc, 0); /* flags: 0x1 - fixed_fps, 0x2 - index_present */ - - if(codec->extradata_size){ - put_v(bc, 1); - put_v(bc, codec->extradata_size); - put_buffer(bc, codec->extradata, codec->extradata_size); - } - put_v(bc, 0); /* end of codec specific headers */ - - switch(codec->codec_type) - { - case CODEC_TYPE_AUDIO: - put_v(bc, (codec->sample_rate * denom) / nom); - put_v(bc, codec->channels); - break; - case CODEC_TYPE_VIDEO: - put_v(bc, codec->width); - put_v(bc, codec->height); - put_v(bc, codec->sample_aspect_ratio.num); - put_v(bc, codec->sample_aspect_ratio.den); - put_v(bc, 0); /* csp type -- unknown */ - break; - default: - break; - } - update_packetheader(nut, bc, 0, 1); - } - - /* info header */ - put_be64(bc, INFO_STARTCODE); - put_packetheader(nut, bc, 30+strlen(s->author)+strlen(s->title)+ - strlen(s->comment)+strlen(s->copyright)+strlen(LIBAVFORMAT_IDENT), 1); - if (s->author[0]) - { - put_v(bc, 9); /* type */ - put_str(bc, s->author); - } - if (s->title[0]) - { - put_v(bc, 10); /* type */ - put_str(bc, s->title); - } - if (s->comment[0]) - { - put_v(bc, 11); /* type */ - put_str(bc, s->comment); - } - if (s->copyright[0]) - { - put_v(bc, 12); /* type */ - put_str(bc, s->copyright); - } - /* encoder */ - put_v(bc, 13); /* type */ - put_str(bc, LIBAVFORMAT_IDENT); - - put_v(bc, 0); /* eof info */ - update_packetheader(nut, bc, 0, 1); - - put_flush_packet(bc); - - return 0; -} - -static int nut_write_packet(AVFormatContext *s, int stream_index, - const uint8_t *buf, int size, int64_t pts) -{ - NUTContext *nut = s->priv_data; - StreamContext *stream= &nut->stream[stream_index]; - ByteIOContext *bc = &s->pb; - int key_frame = 0, full_pts=0; - AVCodecContext *enc; - int64_t lsb_pts, delta_pts; - int frame_type, best_length, frame_code, flags, i, size_mul, size_lsb; - const int64_t frame_start= url_ftell(bc); - - if (stream_index > s->nb_streams) - return 1; - - pts= (av_rescale(pts, stream->rate_num, stream->rate_den) + AV_TIME_BASE/2) / AV_TIME_BASE; - - enc = &s->streams[stream_index]->codec; - key_frame = enc->coded_frame->key_frame; - delta_pts= pts - stream->last_pts; - - frame_type=0; - if(frame_start + size + 20 - FFMAX(nut->last_frame_start[1], nut->last_frame_start[2]) > MAX_TYPE1_DISTANCE) - frame_type=1; - if(key_frame){ - if(frame_type==1 && frame_start + size - nut->last_frame_start[2] > MAX_TYPE2_DISTANCE) - frame_type=2; - if(!stream->last_key_frame) - frame_type=2; - } - - if(frame_type>0){ - update_packetheader(nut, bc, 0, 0); - reset(s); - full_pts=1; - } - //FIXME ensure that the timestamp can be represented by either delta or lsb or full_pts=1 - - lsb_pts = pts & ((1 << stream->msb_timestamp_shift)-1); - - best_length=INT_MAX; - frame_code= -1; - for(i=0; i<256; i++){ - int stream_id_plus1= nut->frame_code[i].stream_id_plus1; - int fc_key_frame= stream->last_key_frame; - int length=0; - size_mul= nut->frame_code[i].size_mul; - size_lsb= nut->frame_code[i].size_lsb; - flags= nut->frame_code[i].flags; - - if(stream_id_plus1 == 0) length+= get_length(stream_index); - else if(stream_id_plus1 - 1 != stream_index) - continue; - if(flags & FLAG_PRED_KEY_FRAME){ - if(flags & FLAG_KEY_FRAME) - fc_key_frame= !fc_key_frame; - }else{ - fc_key_frame= !!(flags & FLAG_KEY_FRAME); - } - assert(key_frame==0 || key_frame==1); - if(fc_key_frame != key_frame) - continue; - - if((!!(flags & FLAG_FRAME_TYPE)) != (frame_type > 0)) - continue; - - if(size_mul <= size_lsb){ - int p= stream->lru_size[size_lsb - size_mul]; - if(p != size) - continue; - }else{ - if(size % size_mul != size_lsb) - continue; - if(flags & FLAG_DATA_SIZE) - length += get_length(size / size_mul); - else if(size/size_mul) - continue; - } - - if(full_pts != ((flags & FLAG_PTS) && (flags & FLAG_FULL_PTS))) - continue; - - if(flags&FLAG_PTS){ - if(flags&FLAG_FULL_PTS){ - length += get_length(pts); - }else{ - length += get_length(lsb_pts); - } - }else{ - int delta= stream->lru_pts_delta[(flags & 12)>>2]; - if(delta != pts - stream->last_pts) - continue; - assert(frame_type == 0); - } - - if(length < best_length){ - best_length= length; - frame_code=i; - } -// av_log(s, AV_LOG_DEBUG, "%d %d %d %d %d %d %d %d %d %d\n", key_frame, frame_type, full_pts, size, stream_index, flags, size_mul, size_lsb, stream_id_plus1, length); - } - - assert(frame_code != -1); - flags= nut->frame_code[frame_code].flags; - size_mul= nut->frame_code[frame_code].size_mul; - size_lsb= nut->frame_code[frame_code].size_lsb; -#if 0 - best_length /= 7; - best_length ++; //frame_code - if(frame_type>0){ - best_length += 4; //packet header - if(frame_type>1) - best_length += 8; // startcode - } - av_log(s, AV_LOG_DEBUG, "kf:%d ft:%d pt:%d fc:%2X len:%2d size:%d stream:%d flag:%d mul:%d lsb:%d s+1:%d pts_delta:%d\n", key_frame, frame_type, full_pts ? 2 : ((flags & FLAG_PTS) ? 1 : 0), frame_code, best_length, size, stream_index, flags, size_mul, size_lsb, nut->frame_code[frame_code].stream_id_plus1,(int)(pts - stream->last_pts)); -#endif - - if (frame_type==2) - put_be64(bc, KEYFRAME_STARTCODE); - put_byte(bc, frame_code); - - if(frame_type>0) - put_packetheader(nut, bc, FFMAX(size+20, MAX_TYPE1_DISTANCE), 0); - if(nut->frame_code[frame_code].stream_id_plus1 == 0) - put_v(bc, stream_index); - if (flags & FLAG_PTS){ - if (flags & FLAG_FULL_PTS) - put_v(bc, pts); - else - put_v(bc, lsb_pts); - } - if(flags & FLAG_DATA_SIZE) - put_v(bc, size / size_mul); - if(size > MAX_TYPE1_DISTANCE){ - assert(frame_type > 0); - update_packetheader(nut, bc, size, 0); - } - - put_buffer(bc, buf, size); +const AVCodecTag ff_nut_data_tags[] = { + { AV_CODEC_ID_TEXT , MKTAG('U', 'T', 'F', '8') }, + { AV_CODEC_ID_NONE , 0 } +}; - update(nut, stream_index, frame_start, frame_type, frame_code, key_frame, size, pts); - - return 0; -} +const AVCodecTag ff_nut_video_tags[] = { + { AV_CODEC_ID_VP9, MKTAG('V', 'P', '9', '0') }, + { AV_CODEC_ID_RAWVIDEO, MKTAG('R', 'G', 'B', 15 ) }, + { AV_CODEC_ID_RAWVIDEO, MKTAG('B', 'G', 'R', 15 ) }, + { AV_CODEC_ID_RAWVIDEO, MKTAG('R', 'G', 'B', 16 ) }, + { AV_CODEC_ID_RAWVIDEO, MKTAG('B', 'G', 'R', 16 ) }, + { AV_CODEC_ID_RAWVIDEO, MKTAG(15 , 'B', 'G', 'R') }, + { AV_CODEC_ID_RAWVIDEO, MKTAG(15 , 'R', 'G', 'B') }, + { AV_CODEC_ID_RAWVIDEO, MKTAG(16 , 'B', 'G', 'R') }, + { AV_CODEC_ID_RAWVIDEO, MKTAG(16 , 'R', 'G', 'B') }, + { AV_CODEC_ID_RAWVIDEO, MKTAG('R', 'G', 'B', 12 ) }, + { AV_CODEC_ID_RAWVIDEO, MKTAG('B', 'G', 'R', 12 ) }, + { AV_CODEC_ID_RAWVIDEO, MKTAG(12 , 'B', 'G', 'R') }, + { AV_CODEC_ID_RAWVIDEO, MKTAG(12 , 'R', 'G', 'B') }, + { AV_CODEC_ID_RAWVIDEO, MKTAG('R', 'G', 'B', 'A') }, + { AV_CODEC_ID_RAWVIDEO, MKTAG('B', 'G', 'R', 'A') }, + { AV_CODEC_ID_RAWVIDEO, MKTAG('A', 'B', 'G', 'R') }, + { AV_CODEC_ID_RAWVIDEO, MKTAG('A', 'R', 'G', 'B') }, + { AV_CODEC_ID_RAWVIDEO, MKTAG('R', 'G', 'B', 24 ) }, + { AV_CODEC_ID_RAWVIDEO, MKTAG('B', 'G', 'R', 24 ) }, + { AV_CODEC_ID_RAWVIDEO, MKTAG('4', '1', '1', 'P') }, + { AV_CODEC_ID_RAWVIDEO, MKTAG('4', '2', '2', 'P') }, + { AV_CODEC_ID_RAWVIDEO, MKTAG('4', '2', '2', 'P') }, + { AV_CODEC_ID_RAWVIDEO, MKTAG('4', '4', '0', 'P') }, + { AV_CODEC_ID_RAWVIDEO, MKTAG('4', '4', '0', 'P') }, + { AV_CODEC_ID_RAWVIDEO, MKTAG('4', '4', '4', 'P') }, + { AV_CODEC_ID_RAWVIDEO, MKTAG('4', '4', '4', 'P') }, + { AV_CODEC_ID_RAWVIDEO, MKTAG('B', '1', 'W', '0') }, + { AV_CODEC_ID_RAWVIDEO, MKTAG('B', '0', 'W', '1') }, + { AV_CODEC_ID_RAWVIDEO, MKTAG('B', 'G', 'R', 8 ) }, + { AV_CODEC_ID_RAWVIDEO, MKTAG('R', 'G', 'B', 8 ) }, + { AV_CODEC_ID_RAWVIDEO, MKTAG('B', 'G', 'R', 4 ) }, + { AV_CODEC_ID_RAWVIDEO, MKTAG('R', 'G', 'B', 4 ) }, + { AV_CODEC_ID_RAWVIDEO, MKTAG('B', '4', 'B', 'Y') }, + { AV_CODEC_ID_RAWVIDEO, MKTAG('R', '4', 'B', 'Y') }, + { AV_CODEC_ID_RAWVIDEO, MKTAG('B', 'G', 'R', 48 ) }, + { AV_CODEC_ID_RAWVIDEO, MKTAG('R', 'G', 'B', 48 ) }, + { AV_CODEC_ID_RAWVIDEO, MKTAG(48 , 'B', 'G', 'R') }, + { AV_CODEC_ID_RAWVIDEO, MKTAG(48 , 'R', 'G', 'B') }, + { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', '3', 11 , 10 ) }, + { AV_CODEC_ID_RAWVIDEO, MKTAG(10 , 11 , '3', 'Y') }, + { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', '3', 10 , 10 ) }, + { AV_CODEC_ID_RAWVIDEO, MKTAG(10 , 10 , '3', 'Y') }, + { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', '3', 0 , 10 ) }, + { AV_CODEC_ID_RAWVIDEO, MKTAG(10 , 0 , '3', 'Y') }, + { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', '1', 0 , 16 ) }, + { AV_CODEC_ID_RAWVIDEO, MKTAG(16 , 0 , '1', 'Y') }, + { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', '3', 11 , 16 ) }, + { AV_CODEC_ID_RAWVIDEO, MKTAG(16 , 11 , '3', 'Y') }, + { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', '3', 10 , 16 ) }, + { AV_CODEC_ID_RAWVIDEO, MKTAG(16 , 10 , '3', 'Y') }, + { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', '3', 0 , 16 ) }, + { AV_CODEC_ID_RAWVIDEO, MKTAG(16 , 0 , '3', 'Y') }, + { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', '4', 11 , 8 ) }, + { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', '2', 0 , 8 ) }, + + { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', '1', 0 , 9 ) }, + { AV_CODEC_ID_RAWVIDEO, MKTAG( 9 , 0 , '1', 'Y') }, + { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', '4', 11 , 9 ) }, + { AV_CODEC_ID_RAWVIDEO, MKTAG( 9 , 11 , '4', 'Y') }, + { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', '4', 10 , 9 ) }, + { AV_CODEC_ID_RAWVIDEO, MKTAG( 9 , 10 , '4', 'Y') }, + { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', '4', 0 , 9 ) }, + { AV_CODEC_ID_RAWVIDEO, MKTAG( 9 , 0 , '4', 'Y') }, + + { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', '1', 0 , 10 ) }, + { AV_CODEC_ID_RAWVIDEO, MKTAG(10 , 0 , '1', 'Y') }, + { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', '4', 11 , 10 ) }, + { AV_CODEC_ID_RAWVIDEO, MKTAG(10 , 11 , '4', 'Y') }, + { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', '4', 10 , 10 ) }, + { AV_CODEC_ID_RAWVIDEO, MKTAG(10 , 10 , '4', 'Y') }, + { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', '4', 0 , 10 ) }, + { AV_CODEC_ID_RAWVIDEO, MKTAG(10 , 0 , '4', 'Y') }, + + { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', '1', 0 , 16 ) }, + { AV_CODEC_ID_RAWVIDEO, MKTAG(16 , 0 , '1', 'Y') }, + { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', '4', 11 , 16 ) }, + { AV_CODEC_ID_RAWVIDEO, MKTAG(16 , 11 , '4', 'Y') }, + { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', '4', 10 , 16 ) }, + { AV_CODEC_ID_RAWVIDEO, MKTAG(16 , 10 , '4', 'Y') }, + { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', '4', 0 , 16 ) }, + { AV_CODEC_ID_RAWVIDEO, MKTAG(16 , 0 , '4', 'Y') }, + + { AV_CODEC_ID_NONE , 0 } +}; -static int nut_write_trailer(AVFormatContext *s) -{ - NUTContext *nut = s->priv_data; - ByteIOContext *bc = &s->pb; +const AVCodecTag ff_nut_audio_tags[] = { + { AV_CODEC_ID_PCM_ALAW, MKTAG('A', 'L', 'A', 'W') }, + { AV_CODEC_ID_PCM_MULAW, MKTAG('U', 'L', 'A', 'W') }, + { AV_CODEC_ID_PCM_F32BE, MKTAG(32 , 'D', 'F', 'P') }, + { AV_CODEC_ID_PCM_F32LE, MKTAG('P', 'F', 'D', 32 ) }, + { AV_CODEC_ID_PCM_F64BE, MKTAG(64 , 'D', 'F', 'P') }, + { AV_CODEC_ID_PCM_F64LE, MKTAG('P', 'F', 'D', 64 ) }, + { AV_CODEC_ID_PCM_S16BE, MKTAG(16 , 'D', 'S', 'P') }, + { AV_CODEC_ID_PCM_S16LE, MKTAG('P', 'S', 'D', 16 ) }, + { AV_CODEC_ID_PCM_S24BE, MKTAG(24 , 'D', 'S', 'P') }, + { AV_CODEC_ID_PCM_S24LE, MKTAG('P', 'S', 'D', 24 ) }, + { AV_CODEC_ID_PCM_S32BE, MKTAG(32 , 'D', 'S', 'P') }, + { AV_CODEC_ID_PCM_S32LE, MKTAG('P', 'S', 'D', 32 ) }, + { AV_CODEC_ID_PCM_S8, MKTAG('P', 'S', 'D', 8 ) }, + { AV_CODEC_ID_PCM_U16BE, MKTAG(16 , 'D', 'U', 'P') }, + { AV_CODEC_ID_PCM_U16LE, MKTAG('P', 'U', 'D', 16 ) }, + { AV_CODEC_ID_PCM_U24BE, MKTAG(24 , 'D', 'U', 'P') }, + { AV_CODEC_ID_PCM_U24LE, MKTAG('P', 'U', 'D', 24 ) }, + { AV_CODEC_ID_PCM_U32BE, MKTAG(32 , 'D', 'U', 'P') }, + { AV_CODEC_ID_PCM_U32LE, MKTAG('P', 'U', 'D', 32 ) }, + { AV_CODEC_ID_PCM_U8, MKTAG('P', 'U', 'D', 8 ) }, + { AV_CODEC_ID_PCM_S16LE_PLANAR, MKTAG('P', 'S', 'P', 16 ) }, + { AV_CODEC_ID_MP3, MKTAG('M', 'P', '3', ' ') }, + { AV_CODEC_ID_NONE, 0 } +}; - update_packetheader(nut, bc, 0, 0); +const AVCodecTag * const ff_nut_codec_tags[] = { + ff_nut_video_tags, ff_nut_audio_tags, ff_nut_subtitle_tags, + ff_codec_bmp_tags, ff_codec_wav_tags, ff_nut_data_tags, 0 +}; -#if 0 +void ff_nut_reset_ts(NUTContext *nut, AVRational time_base, int64_t val){ int i; - - /* WRITE INDEX */ - - for (i = 0; s->nb_streams; i++) - { - put_be64(bc, INDEX_STARTCODE); - put_packetheader(nut, bc, 64, 1); - put_v(bc, s->streams[i]->id); - put_v(bc, ...); - update_packetheader(nut, bc, 0, 1); + for(i=0; iavf->nb_streams; i++){ + nut->stream[i].last_pts= av_rescale_rnd( + val, + time_base.num * (int64_t)nut->stream[i].time_base->den, + time_base.den * (int64_t)nut->stream[i].time_base->num, + AV_ROUND_DOWN); } -#endif - - put_flush_packet(bc); - - av_freep(&nut->stream); - - return 0; } -#endif //CONFIG_ENCODERS -static int nut_probe(AVProbeData *p) -{ - int i; - uint64_t code; - - code = 0xff; - for (i = 0; i < p->buf_size; i++) { - int c = p->buf[i]; - code = (code << 8) | c; - if (code == MAIN_STARTCODE) - return AVPROBE_SCORE_MAX; - } - return 0; +int64_t ff_lsb2full(StreamContext *stream, int64_t lsb){ + int64_t mask = (1<msb_pts_shift)-1; + int64_t delta= stream->last_pts - mask/2; + return ((lsb - delta)&mask) + delta; } -static int decode_main_header(NUTContext *nut){ - AVFormatContext *s= nut->avf; - ByteIOContext *bc = &s->pb; - uint64_t tmp; - int i, j; - - get_packetheader(nut, bc, 8, 1); - - tmp = get_v(bc); - if (tmp != 1){ - av_log(s, AV_LOG_ERROR, "bad version (%Ld)\n", tmp); - return -1; - } - - nut->stream_count = get_v(bc); - get_v(bc); //checksum threshold - - for(i=0; i<256;){ - int tmp_flags = get_v(bc); - int tmp_stream= get_v(bc); - int tmp_mul = get_v(bc); - int tmp_size = get_v(bc); - int count = get_v(bc); - - if(count == 0 || i+count > 256){ - av_log(s, AV_LOG_ERROR, "illegal count %d at %d\n", count, i); - return -1; - } - - if((tmp_flags & FLAG_FRAME_TYPE) && tmp_flags != 1){ - if(tmp_flags & FLAG_PRED_KEY_FRAME){ - av_log(s, AV_LOG_ERROR, "keyframe prediction in non 0 frame type\n"); - return -1; - } - if(!(tmp_flags & FLAG_PTS) || !(tmp_flags & FLAG_FULL_PTS) ){ - av_log(s, AV_LOG_ERROR, "no full pts in non 0 frame type\n"); - return -1; - } - } - - for(j=0; j nut->stream_count + 1){ - av_log(s, AV_LOG_ERROR, "illegal stream number\n"); - return -1; - } - - nut->frame_code[i].flags = tmp_flags ; - nut->frame_code[i].stream_id_plus1 = tmp_stream; - nut->frame_code[i].size_mul = tmp_mul ; - nut->frame_code[i].size_lsb = tmp_size ; - if(++tmp_size >= tmp_mul){ - tmp_size=0; - tmp_stream++; - } - } - } - if(nut->frame_code['N'].flags != 1){ - av_log(s, AV_LOG_ERROR, "illegal frame_code table\n"); - return -1; - } - - if(check_checksum(bc)){ - av_log(s, AV_LOG_ERROR, "Main header checksum missmatch\n"); - return -1; - } - - return 0; +int ff_nut_sp_pos_cmp(const Syncpoint *a, const Syncpoint *b){ + return ((a->pos - b->pos) >> 32) - ((b->pos - a->pos) >> 32); } -static int decode_stream_header(NUTContext *nut){ - AVFormatContext *s= nut->avf; - ByteIOContext *bc = &s->pb; - int class, nom, denom, stream_id, i; - uint64_t tmp; - AVStream *st; - - get_packetheader(nut, bc, 8, 1); - stream_id= get_v(bc); - if(stream_id >= nut->stream_count || s->streams[stream_id]) - return -1; - - st = av_new_stream(s, stream_id); - if (!st) - return AVERROR_NOMEM; - class = get_v(bc); - tmp = get_vb(bc); - switch(class) - { - case 0: - st->codec.codec_type = CODEC_TYPE_VIDEO; - st->codec.codec_id = codec_get_bmp_id(tmp); - if (st->codec.codec_id == CODEC_ID_NONE) - av_log(s, AV_LOG_ERROR, "Unknown codec?!\n"); - break; - case 32: - st->codec.codec_type = CODEC_TYPE_AUDIO; - st->codec.codec_id = codec_get_wav_id(tmp); - if (st->codec.codec_id == CODEC_ID_NONE) - av_log(s, AV_LOG_ERROR, "Unknown codec?!\n"); - break; - default: - av_log(s, AV_LOG_ERROR, "Unknown stream class (%d)\n", class); - return -1; - } - s->bit_rate += get_v(bc); - get_vb(bc); /* language code */ - nom = get_v(bc); - denom = get_v(bc); - nut->stream[stream_id].msb_timestamp_shift = get_v(bc); - for(i=0; i<3; i++) - nut->stream[stream_id].initial_pts_predictor[i]= get_v(bc); - for(i=0; i<2; i++) - nut->stream[stream_id].initial_size_predictor[i]= get_v(bc); - get_byte(bc); /* flags */ - - /* codec specific data headers */ - while(get_v(bc) != 0){ - st->codec.extradata_size= get_v(bc); - st->codec.extradata= av_mallocz(st->codec.extradata_size); - get_buffer(bc, st->codec.extradata, st->codec.extradata_size); -// url_fskip(bc, get_v(bc)); - } - - if (class == 0) /* VIDEO */ - { - st->codec.width = get_v(bc); - st->codec.height = get_v(bc); - st->codec.sample_aspect_ratio.num= get_v(bc); - st->codec.sample_aspect_ratio.den= get_v(bc); - get_v(bc); /* csp type */ - - st->codec.frame_rate = nom; - st->codec.frame_rate_base = denom; - } - if (class == 32) /* AUDIO */ - { - st->codec.sample_rate = (get_v(bc) * nom) / denom; - st->codec.channels = get_v(bc); - } - if(check_checksum(bc)){ - av_log(s, AV_LOG_ERROR, "Stream header %d checksum missmatch\n", stream_id); - return -1; - } - nut->stream[stream_id].rate_num= nom; - nut->stream[stream_id].rate_den= denom; - return 0; +int ff_nut_sp_pts_cmp(const Syncpoint *a, const Syncpoint *b){ + return ((a->ts - b->ts) >> 32) - ((b->ts - a->ts) >> 32); } -static int decode_info_header(NUTContext *nut){ - AVFormatContext *s= nut->avf; - ByteIOContext *bc = &s->pb; - - get_packetheader(nut, bc, 8, 1); +void ff_nut_add_sp(NUTContext *nut, int64_t pos, int64_t back_ptr, int64_t ts){ + Syncpoint *sp= av_mallocz(sizeof(Syncpoint)); + struct AVTreeNode *node = av_tree_node_alloc(); - for(;;){ - int id= get_v(bc); - char *name, *type, custom_name[256], custom_type[256]; - - if(!id) - break; - else if(id >= sizeof(info_table)/sizeof(info_table[0])){ - av_log(s, AV_LOG_ERROR, "info id is too large %d %d\n", id, sizeof(info_table)/sizeof(info_table[0])); - return -1; - } - - type= info_table[id][1]; - name= info_table[id][0]; -//av_log(s, AV_LOG_DEBUG, "%d %s %s\n", id, type, name); - - if(!type){ - get_str(bc, custom_type, sizeof(custom_type)); - type= custom_type; - } - if(!name){ - get_str(bc, custom_name, sizeof(custom_name)); - name= custom_name; - } - - if(!strcmp(type, "v")){ - int value= get_v(bc); - }else{ - if(!strcmp(name, "Author")) - get_str(bc, s->author, sizeof(s->author)); - else if(!strcmp(name, "Title")) - get_str(bc, s->title, sizeof(s->title)); - else if(!strcmp(name, "Copyright")) - get_str(bc, s->copyright, sizeof(s->copyright)); - else if(!strcmp(name, "Description")) - get_str(bc, s->comment, sizeof(s->comment)); - else - get_str(bc, NULL, 0); - } - } - if(check_checksum(bc)){ - av_log(s, AV_LOG_ERROR, "Info header checksum missmatch\n"); - return -1; + sp->pos= pos; + sp->back_ptr= back_ptr; + sp->ts= ts; + av_tree_insert(&nut->syncpoints, sp, (void *) ff_nut_sp_pos_cmp, &node); + if(node){ + av_free(sp); + av_free(node); } - return 0; } -static int nut_read_header(AVFormatContext *s, AVFormatParameters *ap) +static int enu_free(void *opaque, void *elem) { - NUTContext *nut = s->priv_data; - ByteIOContext *bc = &s->pb; - int64_t pos; - int inited_stream_count; - - nut->avf= s; - - av_set_pts_info(s, 60, 1, AV_TIME_BASE); - - /* main header */ - pos=0; - for(;;){ - pos= find_startcode(bc, MAIN_STARTCODE, pos)+1; - if (pos<0){ - av_log(s, AV_LOG_ERROR, "no main startcode found\n"); - return -1; - } - if(decode_main_header(nut) >= 0) - break; - } - - - s->bit_rate = 0; - - nut->stream = av_malloc(sizeof(StreamContext)*nut->stream_count); - - /* stream headers */ - pos=0; - for(inited_stream_count=0; inited_stream_count < nut->stream_count;){ - pos= find_startcode(bc, STREAM_STARTCODE, pos)+1; - if (pos<0){ - av_log(s, AV_LOG_ERROR, "not all stream headers found\n"); - return -1; - } - if(decode_stream_header(nut) >= 0) - inited_stream_count++; - } - - /* info headers */ - pos=0; - for(;;){ - uint64_t startcode= find_any_startcode(bc, pos); - pos= url_ftell(bc); - - if(startcode==0){ - av_log(s, AV_LOG_ERROR, "EOF before video frames\n"); - return -1; - }else if(startcode == KEYFRAME_STARTCODE){ - nut->next_startcode= startcode; - break; - }else if(startcode != INFO_STARTCODE){ - continue; - } - - decode_info_header(nut); - } - + av_free(elem); return 0; } -static int decode_frame(NUTContext *nut, AVPacket *pkt, int frame_code, int frame_type){ - AVFormatContext *s= nut->avf; - StreamContext *stream; - ByteIOContext *bc = &s->pb; - int size, flags, size_mul, size_lsb, stream_id; - int key_frame = 0; - int64_t pts = 0; - const int prefix_len= frame_type == 2 ? 8+1 : 1; - const int64_t frame_start= url_ftell(bc) - prefix_len; - - flags= nut->frame_code[frame_code].flags; - size_mul= nut->frame_code[frame_code].size_mul; - size_lsb= nut->frame_code[frame_code].size_lsb; - stream_id= nut->frame_code[frame_code].stream_id_plus1 - 1; - - if(flags & FLAG_FRAME_TYPE){ - reset(s); - if(get_packetheader(nut, bc, prefix_len, 0) < 0) - return -1; - if(frame_type!=2) - frame_type= 1; - } - - if(stream_id==-1) - stream_id= get_v(bc); - if(stream_id >= s->nb_streams){ - av_log(s, AV_LOG_ERROR, "illegal stream_id\n"); - return -1; - } - stream= &nut->stream[stream_id]; - -// av_log(s, AV_LOG_DEBUG, "ft:%d ppts:%d %d %d\n", frame_type, stream->lru_pts_delta[0], stream->lru_pts_delta[1], stream->lru_pts_delta[2]); - - if(flags & FLAG_PRED_KEY_FRAME){ - if(flags & FLAG_KEY_FRAME) - key_frame= !stream->last_key_frame; - else - key_frame= stream->last_key_frame; - }else{ - key_frame= !!(flags & FLAG_KEY_FRAME); - } - - if(flags & FLAG_PTS){ - if(flags & FLAG_FULL_PTS){ - pts= get_v(bc); - if(frame_type && key_frame){ - av_add_index_entry( - s->streams[stream_id], - frame_start, - pts, - frame_start - nut->stream[stream_id].last_sync_pos, - AVINDEX_KEYFRAME); - nut->stream[stream_id].last_sync_pos= frame_start; - assert(nut->packet_start == frame_start); - } - }else{ - int64_t mask = (1<msb_timestamp_shift)-1; - int64_t delta= stream->last_pts - mask/2; - pts= ((get_v(bc) - delta)&mask) + delta; - } - }else{ - pts= stream->last_pts + stream->lru_pts_delta[(flags&12)>>2]; - } - - if(size_mul <= size_lsb){ - size= stream->lru_size[size_lsb - size_mul]; - }else{ - if(flags & FLAG_DATA_SIZE) - size= size_mul*get_v(bc) + size_lsb; - else - size= size_lsb; - } - -//av_log(s, AV_LOG_DEBUG, "fs:%lld fc:%d ft:%d kf:%d pts:%lld size:%d\n", frame_start, frame_code, frame_type, key_frame, pts, size); - - if(url_ftell(bc) - nut->packet_start + size > nut->written_packet_size){ - av_log(s, AV_LOG_ERROR, "frame size too large\n"); - return -1; - } - - av_new_packet(pkt, size); - get_buffer(bc, pkt->data, size); - pkt->stream_index = stream_id; - if (key_frame) - pkt->flags |= PKT_FLAG_KEY; - pkt->pts = pts * AV_TIME_BASE * stream->rate_den / stream->rate_num; - - update(nut, stream_id, frame_start, frame_type, frame_code, key_frame, size, pts); - - return 0; -} - -static int nut_read_packet(AVFormatContext *s, AVPacket *pkt) -{ - NUTContext *nut = s->priv_data; - ByteIOContext *bc = &s->pb; - int size, i, frame_code=0; - int64_t pos; - - for(;;){ - int frame_type= 0; - uint64_t tmp= nut->next_startcode; - nut->next_startcode=0; - - if (url_feof(bc)) - return -1; - - if(!tmp){ - frame_code = get_byte(bc); - if(frame_code == 'N'){ - tmp= frame_code; - for(i=1; i<8; i++) - tmp = (tmp<<8) + get_byte(bc); - } - } - switch(tmp){ - case MAIN_STARTCODE: - case STREAM_STARTCODE: - case INDEX_STARTCODE: - get_packetheader(nut, bc, 8, 0); - url_fseek(bc, nut->written_packet_size + nut->packet_start, SEEK_SET); - break; - case INFO_STARTCODE: - if(decode_info_header(nut)<0) - goto resync; - break; - case KEYFRAME_STARTCODE: - frame_type = 2; - frame_code = get_byte(bc); - case 0: - if(decode_frame(nut, pkt, frame_code, frame_type)>=0) - return 0; - default: -resync: -av_log(s, AV_LOG_DEBUG, "syncing from %lld\n", nut->packet_start+1); - tmp= find_any_startcode(bc, nut->packet_start+1); - if(tmp==0) - return -1; -av_log(s, AV_LOG_DEBUG, "sync\n"); - if(url_is_streamed(bc)){ - nut->next_startcode= tmp; - break; - } - - pos= url_ftell(bc) - 8; -av_log(s, AV_LOG_DEBUG, "at %lld code=%llX\n", pos, tmp); - if(tmp==KEYFRAME_STARTCODE){ - get_byte(bc); - } - get_v(bc); - size= get_v(bc); - - while(size > 2 && size < 100000 && nut->packet_start < pos - size){ - url_fseek(bc, pos - size, SEEK_SET); - frame_code= get_byte(bc); - if(!(nut->frame_code[ frame_code ].flags & FLAG_FRAME_TYPE)) - break; - if(get_v(bc) != size) - break; - pos -= size; - size= get_v(bc); -av_log(s, AV_LOG_DEBUG, "steping back to %lld next %d\n", pos, size); - } - url_fseek(bc, pos, SEEK_SET); - - nut->written_packet_size= -1; - } - } -} - -static int64_t read_timestamp(AVFormatContext *s, int stream_index, int64_t *pos_arg, int64_t pos_limit){ - NUTContext *nut = s->priv_data; - ByteIOContext *bc = &s->pb; - int64_t pos, pts; - uint64_t code; - int frame_code,step, flags, stream_id, i; -av_log(s, AV_LOG_DEBUG, "read_timestamp(X,%d,%lld,%lld)\n", stream_index, *pos_arg, pos_limit); - - if(*pos_arg < 0) - return AV_NOPTS_VALUE; - - // find a previous startcode, FIXME use forward search and follow backward pointers if undamaged stream - pos= *pos_arg; - step= FFMIN(16*1024, pos); - do{ - pos-= step; - code= find_any_startcode(bc, pos); - - if(code && url_ftell(bc) - 8 < *pos_arg) - break; - step= FFMIN(2*step, pos); - }while(step); - - if(!code) //nothing found, not even after pos_arg - return AV_NOPTS_VALUE; - - url_fseek(bc, -8, SEEK_CUR); - for(i=0; inb_streams; i++) - nut->stream[i].last_sync_pos= url_ftell(bc); - - for(;;){ - int64_t pos= url_ftell(bc); - uint64_t tmp=0; - int prefix_len=1; - - if(pos > pos_limit) - return AV_NOPTS_VALUE; - - frame_code = get_byte(bc); - if(frame_code == 'N'){ - tmp= frame_code; - for(i=1; i<8; i++) - tmp = (tmp<<8) + get_byte(bc); - } -//av_log(s, AV_LOG_DEBUG, "before switch %llX at=%lld\n", tmp, pos); - - switch(tmp){ - case MAIN_STARTCODE: - case STREAM_STARTCODE: - case INDEX_STARTCODE: - case INFO_STARTCODE: - nut->written_packet_size= -1; - get_packetheader(nut, bc, 8, 0); - url_fseek(bc, nut->written_packet_size + nut->packet_start, SEEK_SET); - break; - case KEYFRAME_STARTCODE: - nut->written_packet_size= -1; - prefix_len+=8; - frame_code = get_byte(bc); - case 0: - flags= nut->frame_code[frame_code].flags; - stream_id= nut->frame_code[frame_code].stream_id_plus1 - 1; - - if(get_packetheader(nut, bc, prefix_len, 0) < 0) - goto resync; - - if(!(flags & FLAG_FRAME_TYPE) || !(flags & FLAG_PTS) || !(flags & FLAG_FULL_PTS)) - goto resync; - - if(stream_id==-1) - stream_id= get_v(bc); - if(stream_id >= s->nb_streams) - goto resync; - - pts= get_v(bc); - - if(flags & FLAG_KEY_FRAME){ - av_add_index_entry( - s->streams[stream_id], - pos, - pts, - pos - nut->stream[stream_id].last_sync_pos, - AVINDEX_KEYFRAME); - nut->stream[stream_id].last_sync_pos= pos; - } - if(stream_id != stream_index || !(flags & FLAG_KEY_FRAME) || nut->packet_start < *pos_arg){ - url_fseek(bc, nut->written_packet_size + nut->packet_start, SEEK_SET); - break; - } - - *pos_arg= nut->packet_start; - assert(nut->packet_start == pos); - return pts; - default: -resync: -av_log(s, AV_LOG_DEBUG, "syncing from %lld\n", nut->packet_start+1); - if(!find_any_startcode(bc, nut->packet_start+1)) - return AV_NOPTS_VALUE; - - url_fseek(bc, -8, SEEK_CUR); - } - } - return AV_NOPTS_VALUE; -} - -#define DEBUG_SEEK -static int nut_read_seek(AVFormatContext *s, int stream_index, int64_t target_ts){ - NUTContext *nut = s->priv_data; - StreamContext *stream; - int64_t pos_min, pos_max, pos, pos_limit; - int64_t ts_min, ts_max, ts; - int index, no_change,i; - AVStream *st; - - if (stream_index < 0) { - stream_index = av_find_default_stream_index(s); - if (stream_index < 0) - return -1; - } - stream= &nut->stream[stream_index]; - target_ts= (av_rescale(target_ts, stream->rate_num, stream->rate_den) + AV_TIME_BASE/2) / AV_TIME_BASE; - -#ifdef DEBUG_SEEK - av_log(s, AV_LOG_DEBUG, "read_seek: %d %lld\n", stream_index, target_ts); -#endif - - ts_max= - ts_min= AV_NOPTS_VALUE; - pos_limit= -1; //gcc falsely says it may be uninitalized - - st= s->streams[stream_index]; - if(st->index_entries){ - AVIndexEntry *e; - - index= av_index_search_timestamp(st, target_ts); - e= &st->index_entries[index]; - - if(e->timestamp <= target_ts || e->pos == e->min_distance){ - pos_min= e->pos; - ts_min= e->timestamp; -#ifdef DEBUG_SEEK - av_log(s, AV_LOG_DEBUG, "unsing cached pos_min=0x%llx dts_min=%lld\n", - pos_min,ts_min); -#endif - }else{ - assert(index==0); - } - index++; - if(index < st->nb_index_entries){ - e= &st->index_entries[index]; - assert(e->timestamp >= target_ts); - pos_max= e->pos; - ts_max= e->timestamp; - pos_limit= pos_max - e->min_distance; -#ifdef DEBUG_SEEK - av_log(s, AV_LOG_DEBUG, "unsing cached pos_max=0x%llx pos_limit=0x%llx dts_max=%lld\n", - pos_max,pos_limit, ts_max); -#endif - } - } - - if(ts_min == AV_NOPTS_VALUE){ - pos_min = 0; - ts_min = read_timestamp(s, stream_index, &pos_min, INT64_MAX); - if (ts_min == AV_NOPTS_VALUE) - return -1; - } - - if(ts_max == AV_NOPTS_VALUE){ - int step= 1024; - pos_max = url_filesize(url_fileno(&s->pb)) - 1; - do{ - pos_max -= step; - ts_max = read_timestamp(s, stream_index, &pos_max, pos_max + step); - step += step; - }while(ts_max == AV_NOPTS_VALUE && pos_max >= step); - if (ts_max == AV_NOPTS_VALUE) - return -1; - - for(;;){ - int64_t tmp_pos= pos_max + 1; - int64_t tmp_ts= read_timestamp(s, stream_index, &tmp_pos, INT64_MAX); - if(tmp_ts == AV_NOPTS_VALUE) - break; - ts_max= tmp_ts; - pos_max= tmp_pos; - } - pos_limit= pos_max; - } - - no_change=0; - while (pos_min < pos_limit) { -#ifdef DEBUG_SEEK - av_log(s, AV_LOG_DEBUG, "pos_min=0x%llx pos_max=0x%llx dts_min=%lld dts_max=%lld\n", - pos_min, pos_max, - ts_min, ts_max); -#endif - int64_t start_pos; - assert(pos_limit <= pos_max); - - if(no_change==0){ - int64_t approximate_keyframe_distance= pos_max - pos_limit; - // interpolate position (better than dichotomy) - pos = (int64_t)((double)(pos_max - pos_min) * - (double)(target_ts - ts_min) / - (double)(ts_max - ts_min)) + pos_min - approximate_keyframe_distance; - }else if(no_change==1){ - // bisection, if interpolation failed to change min or max pos last time - pos = (pos_min + pos_limit)>>1; - }else{ - // linear search if bisection failed, can only happen if there are very few or no keframes between min/max - pos=pos_min; - } - if(pos <= pos_min) - pos= pos_min + 1; - else if(pos > pos_limit) - pos= pos_limit; - start_pos= pos; - - ts = read_timestamp(s, stream_index, &pos, INT64_MAX); //may pass pos_limit instead of -1 - if(pos == pos_max) - no_change++; - else - no_change=0; -#ifdef DEBUG_SEEK -av_log(s, AV_LOG_DEBUG, "%Ld %Ld %Ld / %Ld %Ld %Ld target:%Ld limit:%Ld start:%Ld noc:%d\n", pos_min, pos, pos_max, ts_min, ts, ts_max, target_ts, pos_limit, start_pos, no_change); -#endif - assert(ts != AV_NOPTS_VALUE); - if (target_ts < ts) { - pos_limit = start_pos - 1; - pos_max = pos; - ts_max = ts; - } else { - pos_min = pos; - ts_min = ts; - /* check if we are lucky */ - if (target_ts == ts) - break; - } - } - - pos = pos_min; -#ifdef DEBUG_SEEK - pos_min = pos; - ts_min = read_timestamp(s, stream_index, &pos_min, INT64_MAX); - pos_min++; - ts_max = read_timestamp(s, stream_index, &pos_min, INT64_MAX); - av_log(s, AV_LOG_DEBUG, "pos=0x%llx %lld<=%lld<=%lld\n", - pos, ts_min, target_ts, ts_max); -#endif - /* do the seek */ - url_fseek(&s->pb, pos, SEEK_SET); - - nut->written_packet_size= -1; - for(i=0; inb_streams; i++) - nut->stream[i].last_sync_pos= pos; - - return 0; -} - -static int nut_read_close(AVFormatContext *s) +void ff_nut_free_sp(NUTContext *nut) { - NUTContext *nut = s->priv_data; - int i; - - for(i=0;inb_streams;i++) { - av_freep(&s->streams[i]->codec.extradata); - } - av_freep(&nut->stream); - - return 0; -} - -static AVInputFormat nut_iformat = { - "nut", - "nut format", - sizeof(NUTContext), - nut_probe, - nut_read_header, - nut_read_packet, - nut_read_close, - nut_read_seek, - .extensions = "nut", + av_tree_enumerate(nut->syncpoints, NULL, NULL, enu_free); + av_tree_destroy(nut->syncpoints); +} + +const Dispositions ff_nut_dispositions[] = { + {"default" , AV_DISPOSITION_DEFAULT}, + {"dub" , AV_DISPOSITION_DUB}, + {"original" , AV_DISPOSITION_ORIGINAL}, + {"comment" , AV_DISPOSITION_COMMENT}, + {"lyrics" , AV_DISPOSITION_LYRICS}, + {"karaoke" , AV_DISPOSITION_KARAOKE}, + {"" , 0} }; -#ifdef CONFIG_ENCODERS -static AVOutputFormat nut_oformat = { - "nut", - "nut format", - "video/x-nut", - "nut", - sizeof(NUTContext), -#ifdef CONFIG_VORBIS - CODEC_ID_VORBIS, -#elif defined(CONFIG_MP3LAME) - CODEC_ID_MP3, -#else - CODEC_ID_MP2, /* AC3 needs liba52 decoder */ -#endif - CODEC_ID_MPEG4, - nut_write_header, - nut_write_packet, - nut_write_trailer, +const AVMetadataConv ff_nut_metadata_conv[] = { + { "Author", "artist" }, + { "X-CreationTime", "date" }, + { "CreationTime", "date" }, + { "SourceFilename", "filename" }, + { "X-Language", "language" }, + { "X-Disposition", "disposition" }, + { "X-Replaces", "replaces" }, + { "X-Depends", "depends" }, + { "X-Uses", "uses" }, + { "X-UsesFont", "usesfont" }, + { 0 }, }; -#endif //CONFIG_ENCODERS - -int nut_init(void) -{ - av_register_input_format(&nut_iformat); -#ifdef CONFIG_ENCODERS - av_register_output_format(&nut_oformat); -#endif //CONFIG_ENCODERS - return 0; -}