X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavformat%2Fnutenc.c;h=df70f941221878a9b70c603f4cca4068d49ccc06;hb=d641ee94b57a581ab0e45bb21c64bb5a32b0502c;hp=0efb22358aef63bd0f8f1e321cacf2e865931c4b;hpb=e1249ba92ff6c3618ceb3dfb8fcb014b520794c2;p=ffmpeg diff --git a/libavformat/nutenc.c b/libavformat/nutenc.c index 0efb22358ae..df70f941221 100644 --- a/libavformat/nutenc.c +++ b/libavformat/nutenc.c @@ -2,308 +2,471 @@ * nut muxer * Copyright (c) 2004-2007 Michael Niedermayer * - * 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 "libavutil/intreadwrite.h" +#include "libavutil/mathematics.h" +#include "libavutil/tree.h" +#include "libavutil/dict.h" +#include "libavcodec/mpegaudiodata.h" #include "nut.h" +#include "internal.h" +#include "avio_internal.h" +#include "riff.h" + +static int find_expected_header(AVCodecContext *c, int size, int key_frame, + uint8_t out[64]) +{ + int sample_rate = c->sample_rate; + + if (size > 4096) + return 0; + + AV_WB24(out, 1); + + if (c->codec_id == AV_CODEC_ID_MPEG4) { + if (key_frame) { + return 3; + } else { + out[3] = 0xB6; + return 4; + } + } else if (c->codec_id == AV_CODEC_ID_MPEG1VIDEO || + c->codec_id == AV_CODEC_ID_MPEG2VIDEO) { + return 3; + } else if (c->codec_id == AV_CODEC_ID_H264) { + return 3; + } else if (c->codec_id == AV_CODEC_ID_MP3 || + c->codec_id == AV_CODEC_ID_MP2) { + int lsf, mpeg25, sample_rate_index, bitrate_index, frame_size; + int layer = c->codec_id == AV_CODEC_ID_MP3 ? 3 : 2; + unsigned int header = 0xFFF00000; + + lsf = sample_rate < (24000 + 32000) / 2; + mpeg25 = sample_rate < (12000 + 16000) / 2; + sample_rate <<= lsf + mpeg25; + if (sample_rate < (32000 + 44100) / 2) + sample_rate_index = 2; + else if (sample_rate < (44100 + 48000) / 2) + sample_rate_index = 0; + else + sample_rate_index = 1; + + sample_rate = avpriv_mpa_freq_tab[sample_rate_index] >> (lsf + mpeg25); + + for (bitrate_index = 2; bitrate_index < 30; bitrate_index++) { + frame_size = + avpriv_mpa_bitrate_tab[lsf][layer - 1][bitrate_index >> 1]; + frame_size = (frame_size * 144000) / (sample_rate << lsf) + + (bitrate_index & 1); -#define TRACE + if (frame_size == size) + break; + } + + header |= (!lsf) << 19; + header |= (4 - layer) << 17; + header |= 1 << 16; //no crc + AV_WB32(out, header); + if (size <= 0) + return 2; //we guess there is no crc, if there is one the user clearly does not care about overhead + if (bitrate_index == 30) + return -1; //something is wrong ... + + header |= (bitrate_index >> 1) << 12; + header |= sample_rate_index << 10; + header |= (bitrate_index & 1) << 9; + + return 2; //FIXME actually put the needed ones in build_elision_headers() + return 3; //we guess that the private bit is not set +//FIXME the above assumptions should be checked, if these turn out false too often something should be done + } + return 0; +} -static void build_frame_code(AVFormatContext *s){ +static int find_header_idx(AVFormatContext *s, AVCodecContext *c, int size, + int frame_type) +{ + NUTContext *nut = s->priv_data; + uint8_t out[64]; + int i; + int len = find_expected_header(c, size, frame_type, out); + + for (i = 1; i < nut->header_count; i++) { + if (len == nut->header_len[i] && !memcmp(out, nut->header[i], len)) { + return i; + } + } + + return 0; +} + +static void build_elision_headers(AVFormatContext *s) +{ + NUTContext *nut = s->priv_data; + int i; + //FIXME this is lame + //FIXME write a 2pass mode to find the maximal headers + static const uint8_t headers[][5] = { + { 3, 0x00, 0x00, 0x01 }, + { 4, 0x00, 0x00, 0x01, 0xB6}, + { 2, 0xFF, 0xFA }, //mp3+crc + { 2, 0xFF, 0xFB }, //mp3 + { 2, 0xFF, 0xFC }, //mp2+crc + { 2, 0xFF, 0xFD }, //mp2 + }; + + nut->header_count = 7; + for (i = 1; i < nut->header_count; i++) { + nut->header_len[i] = headers[i - 1][0]; + nut->header[i] = &headers[i - 1][1]; + } +} + +static void build_frame_code(AVFormatContext *s) +{ NUTContext *nut = s->priv_data; int key_frame, index, pred, stream_id; - int start=1; - int end= 254; - int keyframe_0_esc= s->nb_streams > 2; + int start = 1; + int end = 254; + int keyframe_0_esc = s->nb_streams > 2; int pred_table[10]; FrameCode *ft; - ft= &nut->frame_code[start]; - ft->flags= FLAG_CODED; - ft->size_mul=1; - ft->pts_delta=1; + ft = &nut->frame_code[start]; + ft->flags = FLAG_CODED; + ft->size_mul = 1; + ft->pts_delta = 1; start++; - if(keyframe_0_esc){ + if (keyframe_0_esc) { /* keyframe = 0 escape */ - FrameCode *ft= &nut->frame_code[start]; - ft->flags= FLAG_STREAM_ID | FLAG_SIZE_MSB | FLAG_CODED_PTS; - ft->size_mul=1; + FrameCode *ft = &nut->frame_code[start]; + ft->flags = FLAG_STREAM_ID | FLAG_SIZE_MSB | FLAG_CODED_PTS; + 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; + for (stream_id = 0; stream_id < s->nb_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 is_audio = codec->codec_type == AVMEDIA_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; - - { - FrameCode *ft= &nut->frame_code[start2]; - ft->flags= FLAG_KEY*key_frame; - ft->flags|= FLAG_SIZE_MSB | FLAG_CODED_PTS; - ft->stream_id= stream_id; - ft->size_mul=1; + for (key_frame = 0; key_frame < 2; key_frame++) { + if (!intra_only || !keyframe_0_esc || key_frame != 0) { + FrameCode *ft = &nut->frame_code[start2]; + ft->flags = FLAG_KEY * key_frame; + ft->flags |= FLAG_SIZE_MSB | FLAG_CODED_PTS; + ft->stream_id = stream_id; + ft->size_mul = 1; + if (is_audio) + ft->header_idx = find_header_idx(s, codec, -1, key_frame); 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); + key_frame = intra_only; + if (is_audio) { + int frame_bytes = codec->frame_size * (int64_t)codec->bit_rate / + (8 * codec->sample_rate); int pts; - for(pts=0; pts<2; pts++){ - for(pred=0; pred<2; pred++){ - FrameCode *ft= &nut->frame_code[start2]; - ft->flags= FLAG_KEY*key_frame; - ft->stream_id= stream_id; - ft->size_mul=frame_bytes + 2; - ft->size_lsb=frame_bytes + pred; - ft->pts_delta=pts; + for (pts = 0; pts < 2; pts++) + for (pred = 0; pred < 2; pred++) { + FrameCode *ft = &nut->frame_code[start2]; + ft->flags = FLAG_KEY * key_frame; + ft->stream_id = stream_id; + ft->size_mul = frame_bytes + 2; + ft->size_lsb = frame_bytes + pred; + ft->pts_delta = pts; + ft->header_idx = find_header_idx(s, codec, frame_bytes + pred, key_frame); start2++; } - } - }else{ - FrameCode *ft= &nut->frame_code[start2]; - ft->flags= FLAG_KEY | FLAG_SIZE_MSB; - ft->stream_id= stream_id; - ft->size_mul=1; - ft->pts_delta=1; + } else { + FrameCode *ft = &nut->frame_code[start2]; + ft->flags = FLAG_KEY | FLAG_SIZE_MSB; + ft->stream_id = stream_id; + ft->size_mul = 1; + ft->pts_delta = 1; start2++; } -#endif - if(codec->has_b_frames){ - pred_count=5; - pred_table[0]=-2; - pred_table[1]=-1; - pred_table[2]=1; - pred_table[3]=3; - pred_table[4]=4; - }else if(codec->codec_id == CODEC_ID_VORBIS){ - pred_count=3; - pred_table[0]=2; - pred_table[1]=9; - pred_table[2]=16; - }else{ - pred_count=1; - pred_table[0]=1; + if (codec->has_b_frames) { + pred_count = 5; + pred_table[0] = -2; + pred_table[1] = -1; + pred_table[2] = 1; + pred_table[3] = 3; + pred_table[4] = 4; + } else if (codec->codec_id == AV_CODEC_ID_VORBIS) { + pred_count = 3; + pred_table[0] = 2; + pred_table[1] = 9; + pred_table[2] = 16; + } else { + pred_count = 1; + pred_table[0] = 1; } - for(pred=0; predframe_code[index]; - ft->flags= FLAG_KEY*key_frame; - ft->flags|= FLAG_SIZE_MSB; - ft->stream_id= stream_id; + for (index = start3; index < end3; index++) { + FrameCode *ft = &nut->frame_code[index]; + ft->flags = FLAG_KEY * key_frame; + ft->flags |= FLAG_SIZE_MSB; + ft->stream_id = stream_id; //FIXME use single byte size and pred from last - ft->size_mul= end3-start3; - ft->size_lsb= index - start3; - ft->pts_delta= pred_table[pred]; + ft->size_mul = end3 - start3; + ft->size_lsb = index - start3; + ft->pts_delta = pred_table[pred]; + if (is_audio) + ft->header_idx = find_header_idx(s, codec, -1, key_frame); } } } - memmove(&nut->frame_code['N'+1], &nut->frame_code['N'], sizeof(FrameCode)*(255-'N')); - nut->frame_code[ 0].flags= - nut->frame_code[255].flags= - nut->frame_code['N'].flags= FLAG_INVALID; + memmove(&nut->frame_code['N' + 1], &nut->frame_code['N'], + sizeof(FrameCode) * (255 - 'N')); + nut->frame_code[0].flags = + nut->frame_code[255].flags = + nut->frame_code['N'].flags = FLAG_INVALID; } -/** - * Gets the length in bytes which is needed to store val as v. - */ -static int get_length(uint64_t val){ - int i=1; - - while(val>>=7) - i++; - - return i; -} - -static void put_v(ByteIOContext *bc, uint64_t val){ - int i= get_length(val); - - while(--i>0) - put_byte(bc, 128 | (val>>(7*i))); - - put_byte(bc, val&127); -} - -static void put_t(NUTContext *nut, StreamContext *nus, ByteIOContext *bc, uint64_t val){ +static void put_tt(NUTContext *nut, AVRational *time_base, AVIOContext *bc, + uint64_t val) +{ val *= nut->time_base_count; - val += nus->time_base - nut->time_base; - put_v(bc, val); + val += time_base - nut->time_base; + ff_put_v(bc, val); } - /** - * stores a string as vb. + * Store a string as vb. */ -static void put_str(ByteIOContext *bc, const char *string){ - int len= strlen(string); +static void put_str(AVIOContext *bc, const char *string) +{ + int len = strlen(string); - put_v(bc, len); - put_buffer(bc, string, len); + ff_put_v(bc, len); + avio_write(bc, string, len); } -static void put_s(ByteIOContext *bc, int64_t val){ - put_v(bc, 2*FFABS(val) - (val>0)); +static void put_s(AVIOContext *bc, int64_t val) +{ + ff_put_v(bc, 2 * FFABS(val) - (val > 0)); } #ifdef TRACE -static inline void put_v_trace(ByteIOContext *bc, uint64_t v, char *file, char *func, int line){ - printf("get_v %5"PRId64" / %"PRIX64" in %s %s:%d\n", v, v, file, func, line); +static inline void ff_put_v_trace(AVIOContext *bc, uint64_t v, const char *file, + const char *func, int line) +{ + av_log(NULL, AV_LOG_DEBUG, "ff_put_v %5"PRId64" / %"PRIX64" in %s %s:%d\n", v, v, file, func, line); - put_v(bc, v); + ff_put_v(bc, v); } -static inline void put_s_trace(ByteIOContext *bc, int64_t v, char *file, char *func, int line){ - printf("get_s %5"PRId64" / %"PRIX64" in %s %s:%d\n", v, v, file, func, line); +static inline void put_s_trace(AVIOContext *bc, int64_t v, const char *file, + const char *func, int line) +{ + av_log(NULL, AV_LOG_DEBUG, "put_s %5"PRId64" / %"PRIX64" in %s %s:%d\n", v, v, file, func, line); put_s(bc, v); } -#define put_v(bc, v) put_v_trace(bc, v, __FILE__, __PRETTY_FUNCTION__, __LINE__) +#define ff_put_v(bc, v) ff_put_v_trace(bc, v, __FILE__, __PRETTY_FUNCTION__, __LINE__) #define put_s(bc, v) put_s_trace(bc, v, __FILE__, __PRETTY_FUNCTION__, __LINE__) #endif //FIXME remove calculate_checksum -static void put_packet(NUTContext *nut, ByteIOContext *bc, ByteIOContext *dyn_bc, int calculate_checksum){ - uint8_t *dyn_buf=NULL; - int dyn_size= url_close_dyn_buf(dyn_bc, &dyn_buf); - int forw_ptr= dyn_size + 4*calculate_checksum; - - if(forw_ptr > 4096) - init_checksum(bc, av_crc04C11DB7_update, 0); //FIXME this is supposed to include the start code - put_v(bc, forw_ptr); - if(forw_ptr > 4096) - put_le32(bc, get_checksum(bc)); - - if(calculate_checksum) - init_checksum(bc, av_crc04C11DB7_update, 0); - put_buffer(bc, dyn_buf, dyn_size); - if(calculate_checksum) - put_le32(bc, get_checksum(bc)); +static void put_packet(NUTContext *nut, AVIOContext *bc, AVIOContext *dyn_bc, + int calculate_checksum, uint64_t startcode) +{ + uint8_t *dyn_buf = NULL; + int dyn_size = avio_close_dyn_buf(dyn_bc, &dyn_buf); + int forw_ptr = dyn_size + 4 * calculate_checksum; + + if (forw_ptr > 4096) + ffio_init_checksum(bc, ff_crc04C11DB7_update, 0); + avio_wb64(bc, startcode); + ff_put_v(bc, forw_ptr); + if (forw_ptr > 4096) + avio_wl32(bc, ffio_get_checksum(bc)); + + if (calculate_checksum) + ffio_init_checksum(bc, ff_crc04C11DB7_update, 0); + avio_write(bc, dyn_buf, dyn_size); + if (calculate_checksum) + avio_wl32(bc, ffio_get_checksum(bc)); av_free(dyn_buf); } -static void write_mainheader(NUTContext *nut, ByteIOContext *bc){ - int i, j, tmp_pts, tmp_flags, tmp_stream, tmp_mul, tmp_size, tmp_fields; +static void write_mainheader(NUTContext *nut, AVIOContext *bc) +{ + int i, j, tmp_pts, tmp_flags, tmp_stream, tmp_mul, tmp_size, tmp_fields, + tmp_head_idx; + int64_t tmp_match; - put_v(bc, 2); /* version */ - put_v(bc, nut->avf->nb_streams); - put_v(bc, MAX_DISTANCE); - put_v(bc, nut->time_base_count); + ff_put_v(bc, 3); /* version */ + ff_put_v(bc, nut->avf->nb_streams); + ff_put_v(bc, nut->max_distance); + ff_put_v(bc, nut->time_base_count); - for(i=0; itime_base_count; i++){ - put_v(bc, nut->time_base[i].num); - put_v(bc, nut->time_base[i].den); + for (i = 0; i < nut->time_base_count; i++) { + ff_put_v(bc, nut->time_base[i].num); + ff_put_v(bc, nut->time_base[i].den); } - tmp_pts=0; - tmp_mul=1; - tmp_stream=0; - for(i=0; i<256;){ - tmp_fields=0; - tmp_size=0; + tmp_pts = 0; + tmp_mul = 1; + tmp_stream = 0; + tmp_match = 1 - (1LL << 62); + tmp_head_idx = 0; + for (i = 0; i < 256; ) { + tmp_fields = 0; + tmp_size = 0; // tmp_res=0; - if(tmp_pts != nut->frame_code[i].pts_delta) tmp_fields=1; - if(tmp_mul != nut->frame_code[i].size_mul ) tmp_fields=2; - if(tmp_stream != nut->frame_code[i].stream_id) tmp_fields=3; - if(tmp_size != nut->frame_code[i].size_lsb ) tmp_fields=4; + if (tmp_pts != nut->frame_code[i].pts_delta) + tmp_fields = 1; + if (tmp_mul != nut->frame_code[i].size_mul) + tmp_fields = 2; + if (tmp_stream != nut->frame_code[i].stream_id) + tmp_fields = 3; + if (tmp_size != nut->frame_code[i].size_lsb) + tmp_fields = 4; // if(tmp_res != nut->frame_code[i].res ) tmp_fields=5; - - tmp_pts = nut->frame_code[i].pts_delta; - tmp_flags = nut->frame_code[i].flags; - tmp_stream= nut->frame_code[i].stream_id; - tmp_mul = nut->frame_code[i].size_mul; - tmp_size = nut->frame_code[i].size_lsb; + if (tmp_head_idx != nut->frame_code[i].header_idx) + tmp_fields = 8; + + tmp_pts = nut->frame_code[i].pts_delta; + tmp_flags = nut->frame_code[i].flags; + tmp_stream = nut->frame_code[i].stream_id; + tmp_mul = nut->frame_code[i].size_mul; + tmp_size = nut->frame_code[i].size_lsb; // tmp_res = nut->frame_code[i].res; + tmp_head_idx = nut->frame_code[i].header_idx; - for(j=0; i<256; j++,i++){ - if(i == 'N'){ + for (j = 0; i < 256; j++, i++) { + if (i == 'N') { j--; continue; } - if(nut->frame_code[i].pts_delta != tmp_pts ) break; - if(nut->frame_code[i].flags != tmp_flags ) break; - if(nut->frame_code[i].stream_id != tmp_stream) break; - if(nut->frame_code[i].size_mul != tmp_mul ) break; - if(nut->frame_code[i].size_lsb != tmp_size+j) break; -// if(nut->frame_code[i].res != tmp_res ) break; + if (nut->frame_code[i].pts_delta != tmp_pts || + nut->frame_code[i].flags != tmp_flags || + 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].res != tmp_res || + nut->frame_code[i].header_idx != tmp_head_idx) + break; } - if(j != tmp_mul - tmp_size) tmp_fields=6; - - put_v(bc, tmp_flags); - put_v(bc, tmp_fields); - if(tmp_fields>0) put_s(bc, tmp_pts); - if(tmp_fields>1) put_v(bc, tmp_mul); - if(tmp_fields>2) put_v(bc, tmp_stream); - if(tmp_fields>3) put_v(bc, tmp_size); - if(tmp_fields>4) put_v(bc, 0 /*tmp_res*/); - if(tmp_fields>5) put_v(bc, j); + if (j != tmp_mul - tmp_size) + tmp_fields = 6; + + ff_put_v(bc, tmp_flags); + ff_put_v(bc, tmp_fields); + if (tmp_fields > 0) + put_s(bc, tmp_pts); + if (tmp_fields > 1) + ff_put_v(bc, tmp_mul); + if (tmp_fields > 2) + ff_put_v(bc, tmp_stream); + if (tmp_fields > 3) + ff_put_v(bc, tmp_size); + if (tmp_fields > 4) + ff_put_v(bc, 0 /*tmp_res*/); + if (tmp_fields > 5) + ff_put_v(bc, j); + if (tmp_fields > 6) + ff_put_v(bc, tmp_match); + if (tmp_fields > 7) + ff_put_v(bc, tmp_head_idx); + } + ff_put_v(bc, nut->header_count - 1); + for (i = 1; i < nut->header_count; i++) { + ff_put_v(bc, nut->header_len[i]); + avio_write(bc, nut->header[i], nut->header_len[i]); } } -static int write_streamheader(NUTContext *nut, ByteIOContext *bc, AVCodecContext *codec, int i){ - put_v(bc, i); - switch(codec->codec_type){ - case CODEC_TYPE_VIDEO: put_v(bc, 0); break; - case CODEC_TYPE_AUDIO: put_v(bc, 1); break; -// case CODEC_TYPE_TEXT : put_v(bc, 2); break; - default : put_v(bc, 3); break; +static int write_streamheader(AVFormatContext *avctx, AVIOContext *bc, + AVStream *st, int i) +{ + NUTContext *nut = avctx->priv_data; + AVCodecContext *codec = st->codec; + unsigned codec_tag = av_codec_get_tag(ff_nut_codec_tags, codec->codec_id); + + ff_put_v(bc, i); + switch (codec->codec_type) { + case AVMEDIA_TYPE_VIDEO: + ff_put_v(bc, 0); + break; + case AVMEDIA_TYPE_AUDIO: + ff_put_v(bc, 1); + break; + case AVMEDIA_TYPE_SUBTITLE: + ff_put_v(bc, 2); + break; + default: + ff_put_v(bc, 3); + break; + } + ff_put_v(bc, 4); + + if (!codec_tag || codec->codec_id == AV_CODEC_ID_RAWVIDEO) + codec_tag = codec->codec_tag; + + if (codec_tag) { + avio_wl32(bc, codec_tag); + } else { + av_log(avctx, AV_LOG_ERROR, "No codec tag defined for stream %d\n", i); + return AVERROR(EINVAL); } - put_v(bc, 4); - if (codec->codec_tag){ - put_le32(bc, codec->codec_tag); - }else - return -1; - - put_v(bc, nut->stream[i].time_base - nut->time_base); - put_v(bc, nut->stream[i].msb_pts_shift); - put_v(bc, nut->stream[i].max_pts_distance); - put_v(bc, codec->has_b_frames); - put_byte(bc, 0); /* flags: 0x1 - fixed_fps, 0x2 - index_present */ - - put_v(bc, codec->extradata_size); - put_buffer(bc, codec->extradata, codec->extradata_size); - - switch(codec->codec_type){ - case CODEC_TYPE_AUDIO: - put_v(bc, codec->sample_rate); - put_v(bc, 1); - put_v(bc, codec->channels); + + ff_put_v(bc, nut->stream[i].time_base - nut->time_base); + ff_put_v(bc, nut->stream[i].msb_pts_shift); + ff_put_v(bc, nut->stream[i].max_pts_distance); + ff_put_v(bc, codec->has_b_frames); + avio_w8(bc, 0); /* flags: 0x1 - fixed_fps, 0x2 - index_present */ + + ff_put_v(bc, codec->extradata_size); + avio_write(bc, codec->extradata, codec->extradata_size); + + switch (codec->codec_type) { + case AVMEDIA_TYPE_AUDIO: + ff_put_v(bc, codec->sample_rate); + ff_put_v(bc, 1); + ff_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 */ + case AVMEDIA_TYPE_VIDEO: + ff_put_v(bc, codec->width); + ff_put_v(bc, codec->height); + + if (st->sample_aspect_ratio.num <= 0 || + st->sample_aspect_ratio.den <= 0) { + ff_put_v(bc, 0); + ff_put_v(bc, 0); + } else { + ff_put_v(bc, st->sample_aspect_ratio.num); + ff_put_v(bc, st->sample_aspect_ratio.den); + } + ff_put_v(bc, 0); /* csp type -- unknown */ break; default: break; @@ -311,204 +474,486 @@ static int write_streamheader(NUTContext *nut, ByteIOContext *bc, AVCodecContext return 0; } -static int write_header(AVFormatContext *s){ - NUTContext *nut = s->priv_data; - ByteIOContext *bc = &s->pb, dyn_bc; - AVCodecContext *codec; - int i, j; +static int add_info(AVIOContext *bc, const char *type, const char *value) +{ + put_str(bc, type); + put_s(bc, -1); + put_str(bc, value); + return 1; +} + +static int write_globalinfo(NUTContext *nut, AVIOContext *bc) +{ + AVFormatContext *s = nut->avf; + AVDictionaryEntry *t = NULL; + AVIOContext *dyn_bc; + uint8_t *dyn_buf = NULL; + int count = 0, dyn_size; + int ret = avio_open_dyn_buf(&dyn_bc); + if (ret < 0) + return ret; + + while ((t = av_dict_get(s->metadata, "", t, AV_DICT_IGNORE_SUFFIX))) + count += add_info(dyn_bc, t->key, t->value); + + ff_put_v(bc, 0); //stream_if_plus1 + ff_put_v(bc, 0); //chapter_id + ff_put_v(bc, 0); //timestamp_start + ff_put_v(bc, 0); //length + + ff_put_v(bc, count); + + dyn_size = avio_close_dyn_buf(dyn_bc, &dyn_buf); + avio_write(bc, dyn_buf, dyn_size); + av_free(dyn_buf); + return 0; +} - nut->avf= s; +static int write_streaminfo(NUTContext *nut, AVIOContext *bc, int stream_id){ + AVFormatContext *s= nut->avf; + AVStream* st = s->streams[stream_id]; + AVIOContext *dyn_bc; + uint8_t *dyn_buf=NULL; + int count=0, dyn_size, i; + int ret = avio_open_dyn_buf(&dyn_bc); + if(ret < 0) + return ret; + + for (i=0; ff_nut_dispositions[i].flag; ++i) { + if (st->disposition & ff_nut_dispositions[i].flag) + count += add_info(dyn_bc, "Disposition", ff_nut_dispositions[i].str); + } + dyn_size = avio_close_dyn_buf(dyn_bc, &dyn_buf); + + if (count) { + ff_put_v(bc, stream_id + 1); //stream_id_plus1 + ff_put_v(bc, 0); //chapter_id + ff_put_v(bc, 0); //timestamp_start + ff_put_v(bc, 0); //length + + ff_put_v(bc, count); + + avio_write(bc, dyn_buf, dyn_size); + } + + av_free(dyn_buf); + return count; +} + +static int write_chapter(NUTContext *nut, AVIOContext *bc, int id) +{ + AVIOContext *dyn_bc; + uint8_t *dyn_buf = NULL; + AVDictionaryEntry *t = NULL; + AVChapter *ch = nut->avf->chapters[id]; + int ret, dyn_size, count = 0; + + ret = avio_open_dyn_buf(&dyn_bc); + if (ret < 0) + return ret; + + ff_put_v(bc, 0); // stream_id_plus1 + put_s(bc, id + 1); // chapter_id + put_tt(nut, nut->chapter[id].time_base, bc, ch->start); // chapter_start + ff_put_v(bc, ch->end - ch->start); // chapter_len - nut->stream = av_mallocz(sizeof(StreamContext)*s->nb_streams); - nut->time_base= av_mallocz(sizeof(AVRational )*s->nb_streams); + while ((t = av_dict_get(ch->metadata, "", t, AV_DICT_IGNORE_SUFFIX))) + count += add_info(dyn_bc, t->key, t->value); + + ff_put_v(bc, count); + + dyn_size = avio_close_dyn_buf(dyn_bc, &dyn_buf); + avio_write(bc, dyn_buf, dyn_size); + av_freep(&dyn_buf); + return 0; +} - for(i=0; inb_streams; i++){ - AVStream *st= s->streams[i]; +static int write_headers(AVFormatContext *avctx, AVIOContext *bc) +{ + NUTContext *nut = avctx->priv_data; + AVIOContext *dyn_bc; + int i, ret; + + ff_metadata_conv_ctx(avctx, ff_nut_metadata_conv, NULL); + + ret = avio_open_dyn_buf(&dyn_bc); + if (ret < 0) + return ret; + write_mainheader(nut, dyn_bc); + put_packet(nut, bc, dyn_bc, 1, MAIN_STARTCODE); + + for (i = 0; i < nut->avf->nb_streams; i++) { + ret = avio_open_dyn_buf(&dyn_bc); + if (ret < 0) + return ret; + ret = write_streamheader(avctx, dyn_bc, nut->avf->streams[i], i); + if (ret < 0) + return ret; + put_packet(nut, bc, dyn_bc, 1, STREAM_STARTCODE); + } + + ret = avio_open_dyn_buf(&dyn_bc); + if (ret < 0) + return ret; + write_globalinfo(nut, dyn_bc); + put_packet(nut, bc, dyn_bc, 1, INFO_STARTCODE); + + for (i = 0; i < nut->avf->nb_streams; i++) { + ret = avio_open_dyn_buf(&dyn_bc); + if (ret < 0) + return ret; + ret = write_streaminfo(nut, dyn_bc, i); + if (ret < 0) + return ret; + if (ret > 0) + put_packet(nut, bc, dyn_bc, 1, INFO_STARTCODE); + else { + uint8_t *buf; + avio_close_dyn_buf(dyn_bc, &buf); + av_free(buf); + } + } + + for (i = 0; i < nut->avf->nb_chapters; i++) { + ret = avio_open_dyn_buf(&dyn_bc); + if (ret < 0) + return ret; + ret = write_chapter(nut, dyn_bc, i); + if (ret < 0) { + uint8_t *buf; + avio_close_dyn_buf(dyn_bc, &buf); + av_freep(&buf); + return ret; + } + put_packet(nut, bc, dyn_bc, 1, INFO_STARTCODE); + } + + nut->last_syncpoint_pos = INT_MIN; + nut->header_count++; + return 0; +} + +static int nut_write_header(AVFormatContext *s) +{ + NUTContext *nut = s->priv_data; + AVIOContext *bc = s->pb; + int i, j, ret; + + nut->avf = s; + + nut->stream = av_mallocz(sizeof(StreamContext) * s->nb_streams); + if (s->nb_chapters) + nut->chapter = av_mallocz(sizeof(ChapterContext) * s->nb_chapters); + nut->time_base = av_mallocz(sizeof(AVRational) * (s->nb_streams + + s->nb_chapters)); + if (!nut->stream || (s->nb_chapters && !nut->chapter) || !nut->time_base) { + av_freep(&nut->stream); + av_freep(&nut->chapter); + av_freep(&nut->time_base); + return AVERROR(ENOMEM); + } + + for (i = 0; i < s->nb_streams; i++) { + AVStream *st = s->streams[i]; int ssize; AVRational time_base; - ff_parse_specific_params(st->codec, &time_base.den, &ssize, &time_base.num); + ff_parse_specific_params(st->codec, &time_base.den, &ssize, + &time_base.num); - av_set_pts_info(st, 64, time_base.num, time_base.den); + avpriv_set_pts_info(st, 64, time_base.num, time_base.den); - for(j=0; jtime_base_count; j++){ - if(!memcmp(&time_base, &nut->time_base[j], sizeof(AVRational))){ + for (j = 0; j < nut->time_base_count; j++) + if (!memcmp(&time_base, &nut->time_base[j], sizeof(AVRational))) { break; } - } - nut->time_base[j]= time_base; - nut->stream[i].time_base= &nut->time_base[j]; - if(j==nut->time_base_count) + nut->time_base[j] = time_base; + nut->stream[i].time_base = &nut->time_base[j]; + if (j == nut->time_base_count) nut->time_base_count++; - if(av_q2d(time_base) >= 0.001) + if (INT64_C(1000) * time_base.num >= time_base.den) nut->stream[i].msb_pts_shift = 7; else nut->stream[i].msb_pts_shift = 14; - nut->stream[i].max_pts_distance= FFMAX(1/av_q2d(time_base), 1); + nut->stream[i].max_pts_distance = + FFMAX(time_base.den, time_base.num) / time_base.num; } - build_frame_code(s); - assert(nut->frame_code['N'].flags == FLAG_INVALID); + for (i = 0; i < s->nb_chapters; i++) { + AVChapter *ch = s->chapters[i]; - put_buffer(bc, ID_STRING, strlen(ID_STRING)); - put_byte(bc, 0); + for (j = 0; j < nut->time_base_count; j++) + if (!memcmp(&ch->time_base, &nut->time_base[j], sizeof(AVRational))) + break; - /* main header */ - put_be64(bc, MAIN_STARTCODE); - url_open_dyn_buf(&dyn_bc); - write_mainheader(nut, &dyn_bc); - put_packet(nut, bc, &dyn_bc, 1); + nut->time_base[j] = ch->time_base; + nut->chapter[i].time_base = &nut->time_base[j]; + if (j == nut->time_base_count) + nut->time_base_count++; + } - for (i=0; i < s->nb_streams; i++){ - codec = s->streams[i]->codec; + nut->max_distance = MAX_DISTANCE; + build_elision_headers(s); + build_frame_code(s); + assert(nut->frame_code['N'].flags == FLAG_INVALID); - put_be64(bc, STREAM_STARTCODE); - url_open_dyn_buf(&dyn_bc); - write_streamheader(nut, &dyn_bc, codec, i); - put_packet(nut, bc, &dyn_bc, 1); - } + avio_write(bc, ID_STRING, strlen(ID_STRING)); + avio_w8(bc, 0); - put_flush_packet(bc); + if ((ret = write_headers(s, bc)) < 0) + return ret; - //FIXME info header, header repeation, ... + avio_flush(bc); + + //FIXME index return 0; } -static int get_needed_flags(NUTContext *nut, StreamContext *nus, FrameCode *fc, AVPacket *pkt){ - int flags= 0; - - if(pkt->flags & PKT_FLAG_KEY ) flags |= FLAG_KEY; - if(pkt->stream_index != fc->stream_id ) flags |= FLAG_STREAM_ID; - if(pkt->size / fc->size_mul ) flags |= FLAG_SIZE_MSB; - if(pkt->pts - nus->last_pts != fc->pts_delta) flags |= FLAG_CODED_PTS; - if(pkt->size > 2*nut->max_distance ) flags |= FLAG_CHECKSUM; - if(FFABS(pkt->pts - nus->last_pts) - > nus->max_pts_distance) flags |= FLAG_CHECKSUM; +static int get_needed_flags(NUTContext *nut, StreamContext *nus, FrameCode *fc, + AVPacket *pkt) +{ + int flags = 0; + + if (pkt->flags & AV_PKT_FLAG_KEY) + flags |= FLAG_KEY; + if (pkt->stream_index != fc->stream_id) + flags |= FLAG_STREAM_ID; + if (pkt->size / fc->size_mul) + flags |= FLAG_SIZE_MSB; + if (pkt->pts - nus->last_pts != fc->pts_delta) + flags |= FLAG_CODED_PTS; + if (pkt->size > 2 * nut->max_distance) + flags |= FLAG_CHECKSUM; + if (FFABS(pkt->pts - nus->last_pts) > nus->max_pts_distance) + flags |= FLAG_CHECKSUM; + if (pkt->size < nut->header_len[fc->header_idx] || + (pkt->size > 4096 && fc->header_idx) || + memcmp(pkt->data, nut->header[fc->header_idx], + nut->header_len[fc->header_idx])) + flags |= FLAG_HEADER_IDX; + + return flags | (fc->flags & FLAG_CODED); +} - return flags; +static int find_best_header_idx(NUTContext *nut, AVPacket *pkt) +{ + int i; + int best_i = 0; + int best_len = 0; + + if (pkt->size > 4096) + return 0; + + for (i = 1; i < nut->header_count; i++) + if (pkt->size >= nut->header_len[i] + && nut->header_len[i] > best_len + && !memcmp(pkt->data, nut->header[i], nut->header_len[i])) { + best_i = i; + best_len = nut->header_len[i]; + } + return best_i; } -static int write_packet(AVFormatContext *s, AVPacket *pkt){ - NUTContext *nut = s->priv_data; - StreamContext *nus= &nut->stream[pkt->stream_index]; - ByteIOContext *bc = &s->pb, dyn_bc; +static int nut_write_packet(AVFormatContext *s, AVPacket *pkt) +{ + NUTContext *nut = s->priv_data; + StreamContext *nus = &nut->stream[pkt->stream_index]; + AVIOContext *bc = s->pb, *dyn_bc; FrameCode *fc; int64_t coded_pts; - int best_length, frame_code, flags, needed_flags, i; - int key_frame = !!(pkt->flags & PKT_FLAG_KEY); - int store_sp=0; + int best_length, frame_code, flags, needed_flags, i, header_idx, + best_header_idx; + int key_frame = !!(pkt->flags & AV_PKT_FLAG_KEY); + int store_sp = 0; + int ret; + + if (pkt->pts < 0) { + av_log(s, AV_LOG_ERROR, + "Negative pts not supported stream %d, pts %"PRId64"\n", + pkt->stream_index, pkt->pts); + return AVERROR_INVALIDDATA; + } - if(key_frame && !!(nus->last_flags & FLAG_KEY)) - store_sp= 1; + if (1LL << (20 + 3 * nut->header_count) <= avio_tell(bc)) + write_headers(s, bc); - if(pkt->size + 30/*FIXME check*/ + url_ftell(bc) >= nut->last_syncpoint_pos + nut->max_distance) - store_sp= 1; + if (key_frame && !(nus->last_flags & FLAG_KEY)) + store_sp = 1; -//FIXME ensure store_sp is 1 for the first thing + if (pkt->size + 30 /*FIXME check*/ + avio_tell(bc) >= + nut->last_syncpoint_pos + nut->max_distance) + store_sp = 1; - if(store_sp){ - ff_nut_reset_ts(nut, *nus->time_base, pkt->dts); +//FIXME: Ensure store_sp is 1 in the first place. - nut->last_syncpoint_pos= url_ftell(bc); - put_be64(bc, SYNCPOINT_STARTCODE); - url_open_dyn_buf(&dyn_bc); - put_t(nut, nus, &dyn_bc, pkt->dts); - put_v(&dyn_bc, 0); //FIXME back_ptr_div16 - put_packet(nut, bc, &dyn_bc, 1); + if (store_sp) { + Syncpoint *sp, dummy = { .pos = INT64_MAX }; + + ff_nut_reset_ts(nut, *nus->time_base, pkt->dts); + for (i = 0; i < s->nb_streams; i++) { + AVStream *st = s->streams[i]; + int64_t dts_tb = av_rescale_rnd(pkt->dts, + nus->time_base->num * (int64_t)nut->stream[i].time_base->den, + nus->time_base->den * (int64_t)nut->stream[i].time_base->num, + AV_ROUND_DOWN); + int index = av_index_search_timestamp(st, dts_tb, + AVSEEK_FLAG_BACKWARD); + if (index >= 0) + dummy.pos = FFMIN(dummy.pos, st->index_entries[index].pos); + } + if (dummy.pos == INT64_MAX) + dummy.pos = 0; + sp = av_tree_find(nut->syncpoints, &dummy, (void *)ff_nut_sp_pos_cmp, + NULL); + + nut->last_syncpoint_pos = avio_tell(bc); + ret = avio_open_dyn_buf(&dyn_bc); + if (ret < 0) + return ret; + put_tt(nut, nus->time_base, dyn_bc, pkt->dts); + ff_put_v(dyn_bc, sp ? (nut->last_syncpoint_pos - sp->pos) >> 4 : 0); + put_packet(nut, bc, dyn_bc, 1, SYNCPOINT_STARTCODE); + + ff_nut_add_sp(nut, nut->last_syncpoint_pos, 0 /*unused*/, pkt->dts); } assert(nus->last_pts != AV_NOPTS_VALUE); - coded_pts = pkt->pts & ((1<msb_pts_shift)-1); - if(ff_lsb2full(nus, coded_pts) != pkt->pts) - coded_pts= pkt->pts + (1<msb_pts_shift); + coded_pts = pkt->pts & ((1 << nus->msb_pts_shift) - 1); + if (ff_lsb2full(nus, coded_pts) != pkt->pts) + coded_pts = pkt->pts + (1 << nus->msb_pts_shift); + + best_header_idx = find_best_header_idx(nut, pkt); - best_length=INT_MAX; - frame_code= -1; - for(i=0; i<256; i++){ - int length= 0; - FrameCode *fc= &nut->frame_code[i]; - int flags= fc->flags; + best_length = INT_MAX; + frame_code = -1; + for (i = 0; i < 256; i++) { + int length = 0; + FrameCode *fc = &nut->frame_code[i]; + int flags = fc->flags; - if(flags & FLAG_INVALID) + if (flags & FLAG_INVALID) continue; - needed_flags= get_needed_flags(nut, nus, fc, pkt); + needed_flags = get_needed_flags(nut, nus, fc, pkt); - if(flags & FLAG_CODED){ + if (flags & FLAG_CODED) { length++; - flags &= ~needed_flags; - flags |= needed_flags; + flags = needed_flags; } - if((flags & needed_flags) != needed_flags) + if ((flags & needed_flags) != needed_flags) continue; - if((flags ^ needed_flags) & FLAG_KEY) + if ((flags ^ needed_flags) & FLAG_KEY) continue; - if(flags & FLAG_STREAM_ID) - length+= get_length(pkt->stream_index); + if (flags & FLAG_STREAM_ID) + length += ff_get_v_length(pkt->stream_index); - if(pkt->size % fc->size_mul != fc->size_lsb) + if (pkt->size % fc->size_mul != fc->size_lsb) continue; - if(flags & FLAG_SIZE_MSB) - length += get_length(pkt->size / fc->size_mul); + if (flags & FLAG_SIZE_MSB) + length += ff_get_v_length(pkt->size / fc->size_mul); - if(flags & FLAG_CHECKSUM) - length+=4; + if (flags & FLAG_CHECKSUM) + length += 4; - if(flags & FLAG_CODED_PTS) - length += get_length(coded_pts); + if (flags & FLAG_CODED_PTS) + length += ff_get_v_length(coded_pts); + + if ((flags & FLAG_CODED) + && nut->header_len[best_header_idx] > + nut->header_len[fc->header_idx] + 1) { + flags |= FLAG_HEADER_IDX; + } + + if (flags & FLAG_HEADER_IDX) { + length += 1 - nut->header_len[best_header_idx]; + } else { + length -= nut->header_len[fc->header_idx]; + } - length*=4; - length+= !(flags & FLAG_CODED_PTS); - length+= !(flags & FLAG_CHECKSUM); + length *= 4; + length += !(flags & FLAG_CODED_PTS); + length += !(flags & FLAG_CHECKSUM); - if(length < best_length){ - best_length= length; - frame_code=i; + if (length < best_length) { + best_length = length; + frame_code = i; } } assert(frame_code != -1); - fc= &nut->frame_code[frame_code]; - flags= fc->flags; - needed_flags= get_needed_flags(nut, nus, fc, pkt); - - init_checksum(bc, av_crc04C11DB7_update, 0); - put_byte(bc, frame_code); - if(flags & FLAG_CODED){ - put_v(bc, (flags^needed_flags) & ~(FLAG_CODED)); + fc = &nut->frame_code[frame_code]; + flags = fc->flags; + needed_flags = get_needed_flags(nut, nus, fc, pkt); + header_idx = fc->header_idx; + + ffio_init_checksum(bc, ff_crc04C11DB7_update, 0); + avio_w8(bc, frame_code); + if (flags & FLAG_CODED) { + ff_put_v(bc, (flags ^ needed_flags) & ~(FLAG_CODED)); flags = needed_flags; } - if(flags & FLAG_STREAM_ID) put_v(bc, pkt->stream_index); - if(flags & FLAG_CODED_PTS) put_v(bc, coded_pts); - if(flags & FLAG_SIZE_MSB) put_v(bc, pkt->size / fc->size_mul); + if (flags & FLAG_STREAM_ID) + ff_put_v(bc, pkt->stream_index); + if (flags & FLAG_CODED_PTS) + ff_put_v(bc, coded_pts); + if (flags & FLAG_SIZE_MSB) + ff_put_v(bc, pkt->size / fc->size_mul); + if (flags & FLAG_HEADER_IDX) + ff_put_v(bc, header_idx = best_header_idx); + + if (flags & FLAG_CHECKSUM) + avio_wl32(bc, ffio_get_checksum(bc)); + else + ffio_get_checksum(bc); + + avio_write(bc, pkt->data + nut->header_len[header_idx], + pkt->size - nut->header_len[header_idx]); + nus->last_flags = flags; + nus->last_pts = pkt->pts; + + //FIXME just store one per syncpoint + if (flags & FLAG_KEY) + av_add_index_entry( + s->streams[pkt->stream_index], + nut->last_syncpoint_pos, + pkt->pts, + 0, + 0, + AVINDEX_KEYFRAME); - if(flags & FLAG_CHECKSUM) put_le32(bc, get_checksum(bc)); - else get_checksum(bc); + return 0; +} + +static int nut_write_trailer(AVFormatContext *s) +{ + NUTContext *nut = s->priv_data; + AVIOContext *bc = s->pb; + + while (nut->header_count < 3) + write_headers(s, bc); + + ff_nut_free_sp(nut); + av_freep(&nut->stream); + av_freep(&nut->chapter); + av_freep(&nut->time_base); - put_buffer(bc, pkt->data, pkt->size); - nus->last_flags= flags; return 0; } -AVOutputFormat nut_muxer = { - "nut", - "nut format", - "video/x-nut", - "nut", - sizeof(NUTContext), -#ifdef CONFIG_LIBVORBIS - CODEC_ID_VORBIS, -#elif defined(CONFIG_LIBMP3LAME) - CODEC_ID_MP3, -#else - CODEC_ID_MP2, /* AC3 needs liba52 decoder */ -#endif - CODEC_ID_MPEG4, - write_header, - write_packet, -// write_trailer, - .flags = AVFMT_GLOBALHEADER, - .codec_tag= (const AVCodecTag*[]){codec_bmp_tags, codec_wav_tags, 0}, +AVOutputFormat ff_nut_muxer = { + .name = "nut", + .long_name = NULL_IF_CONFIG_SMALL("NUT"), + .mime_type = "video/x-nut", + .extensions = "nut", + .priv_data_size = sizeof(NUTContext), + .audio_codec = CONFIG_LIBVORBIS ? AV_CODEC_ID_VORBIS : + CONFIG_LIBMP3LAME ? AV_CODEC_ID_MP3 : AV_CODEC_ID_MP2, + .video_codec = AV_CODEC_ID_MPEG4, + .write_header = nut_write_header, + .write_packet = nut_write_packet, + .write_trailer = nut_write_trailer, + .flags = AVFMT_GLOBALHEADER | AVFMT_VARIABLE_FPS, + .codec_tag = ff_nut_codec_tags, };