/*
- * "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:
- * - index writing
- * - index packet reading support
-*/
-
-//#define DEBUG 1
-
-#include <limits.h>
-#include "avformat.h"
-#include "mpegaudio.h"
-#include "avi.h"
-
-#undef NDEBUG
-#include <assert.h>
-
-//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
-
-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; ///<pos of last 1/2 type frame
-} StreamContext;
-
-typedef struct {
- AVFormatContext *avf;
- int64_t packet_start;
- int64_t last_packet_start;
- int written_packet_size;
- int64_t packet_size_pos;
- int64_t last_frame_start[3];
- FrameCode frame_code[256];
- int stream_count;
- uint64_t next_startcode; ///< stores the next startcode if it has alraedy been parsed but the stream isnt seekable
- StreamContext *stream;
-} NUTContext;
-
-static char *info_table[][2]={
- {NULL , NULL }, // end
- {NULL , NULL },
- {NULL , "UTF8"},
- {NULL , "v"},
- {NULL , "s"},
- {"StreamId" , "v"},
- {"SegmentId" , "v"},
- {"StartTimestamp" , "v"},
- {"EndTimestamp" , "v"},
- {"Author" , "UTF8"},
- {"Title" , "UTF8"},
- {"Description" , "UTF8"},
- {"Copyright" , "UTF8"},
- {"Encoder" , "UTF8"},
- {"Keyword" , "UTF8"},
- {"Cover" , "JPEG"},
- {"Cover" , "PNG"},
+#include "libavutil/mathematics.h"
+#include "libavutil/tree.h"
+#include "nut.h"
+#include "riff.h"
+#include "internal.h"
+
+const AVCodecTag ff_nut_subtitle_tags[] = {
+ { AV_CODEC_ID_TEXT, MKTAG('U', 'T', 'F', '8') },
+ { AV_CODEC_ID_SSA, MKTAG('S', 'S', 'A', 0) },
+ { AV_CODEC_ID_DVD_SUBTITLE, MKTAG('D', 'V', 'D', 'S') },
+ { AV_CODEC_ID_DVB_SUBTITLE, MKTAG('D', 'V', 'B', 'S') },
+ { AV_CODEC_ID_NONE, 0 }
};
-static void update_lru(int *lru, int current, int count){
- int i;
-
- for(i=0; i<count-1; i++){
- if(lru[i] == current)
- break;
- }
-
- for(; i; i--){
- lru[i]= lru[i-1];
- }
-
- lru[0]= current;
-}
-
-static void update(NUTContext *nut, int stream_index, int64_t frame_start, int frame_type, int frame_code, int key_frame, int size, int64_t pts){
- StreamContext *stream= &nut->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; i<s->nb_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_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 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; pred<MAX_SIZE_LRU; pred++){
- for(frame_type=0; frame_type<1; frame_type++){
- FrameCode *ft= &nut->frame_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; pred<pred_count; pred++){
- int start3= start2 + (end2-start2)*pred / pred_count;
- int end3 = start2 + (end2-start2)*(pred+1) / pred_count;
-
- for(index=start3; index<end3; index++){
- FrameCode *ft= &nut->frame_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;
-}
+const AVCodecTag ff_nut_data_tags[] = {
+ { AV_CODEC_ID_TEXT, MKTAG('U', 'T', 'F', '8') },
+ { AV_CODEC_ID_NONE, 0 }
+};
-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--;
- }
+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('R', 'B', 'A', 64 ) },
+ { AV_CODEC_ID_RAWVIDEO, MKTAG('B', 'R', 'A', 64 ) },
+ { AV_CODEC_ID_RAWVIDEO, MKTAG(64 , 'R', 'B', 'A') },
+ { AV_CODEC_ID_RAWVIDEO, MKTAG(64 , 'B', 'R', 'A') },
+ { 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 }
+};
- if(maxlen)
- string[FFMIN(len, maxlen-1)]= 0;
-
- if(maxlen == len)
- return -1;
- else
- return 0;
-}
+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_S16BE_PLANAR, MKTAG(16 , 'P', 'S', 'P') },
+ { AV_CODEC_ID_PCM_S16LE_PLANAR, MKTAG('P', 'S', 'P', 16) },
+ { AV_CODEC_ID_PCM_S24LE_PLANAR, MKTAG('P', 'S', 'P', 24) },
+ { AV_CODEC_ID_PCM_S32LE_PLANAR, MKTAG('P', 'S', 'P', 32) },
+ { AV_CODEC_ID_MP3, MKTAG('M', 'P', '3', ' ') },
+ { AV_CODEC_ID_NONE, 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;
-}
+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
+};
-static int get_packetheader(NUTContext *nut, ByteIOContext *bc, int prefix_length, int calculate_checksum)
+void ff_nut_reset_ts(NUTContext *nut, AVRational time_base, int64_t val)
{
- 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;
- }
+ for (i = 0; i < nut->avf->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);
}
-#ifdef CONFIG_ENCODERS
-static void put_v(ByteIOContext *bc, uint64_t val)
+int64_t ff_lsb2full(StreamContext *stream, int64_t lsb)
{
- 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);
+ int64_t mask = (1 << stream->msb_pts_shift) - 1;
+ int64_t delta = stream->last_pts - mask / 2;
+ return ((lsb - delta) & mask) + delta;
}
-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)
+int ff_nut_sp_pos_cmp(const Syncpoint *a, const Syncpoint *b)
{
- 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;
+ return ((a->pos - b->pos) >> 32) - ((b->pos - a->pos) >> 32);
}
-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)
+int ff_nut_sp_pts_cmp(const Syncpoint *a, const Syncpoint *b)
{
- 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);
-
- 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 */
- if(!(s->streams[0]->codec.flags & CODEC_FLAG_BITEXACT)){
- 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;
+ return ((a->ts - b->ts) >> 32) - ((b->ts - a->ts) >> 32);
}
-static int nut_write_packet(AVFormatContext *s, int stream_index,
- const uint8_t *buf, int size, int64_t pts)
+int ff_nut_add_sp(NUTContext *nut, int64_t pos, int64_t back_ptr, int64_t ts)
{
- 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;
+ Syncpoint *sp = av_mallocz(sizeof(Syncpoint));
+ struct AVTreeNode *node = av_tree_node_alloc();
- 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 (!sp || !node) {
+ av_freep(&sp);
+ av_freep(&node);
+ return AVERROR(ENOMEM);
}
- 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;
- 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;
- 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);
-
- update(nut, stream_index, frame_start, frame_type, frame_code, key_frame, size, pts);
-
- return 0;
-}
-
-static int nut_write_trailer(AVFormatContext *s)
-{
- NUTContext *nut = s->priv_data;
- ByteIOContext *bc = &s->pb;
-
- update_packetheader(nut, bc, 0, 0);
-
-#if 0
- 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);
- }
-#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;
-}
-
-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);
-
- 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_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<count; j++,i++){
- if(tmp_stream > 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;
-}
-
-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);
- st->codec.codec_tag= tmp;
- 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;
-}
-
-static int decode_info_header(NUTContext *nut){
- AVFormatContext *s= nut->avf;
- ByteIOContext *bc = &s->pb;
-
- get_packetheader(nut, bc, 8, 1);
-
- 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;
- }
- return 0;
-}
-
-static int nut_read_header(AVFormatContext *s, AVFormatParameters *ap)
-{
- 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);
+ 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 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]);
-
- key_frame= !!(flags & FLAG_KEY_FRAME);
-
- if(flags & FLAG_PTS){
- if(flags & FLAG_FULL_PTS){
- pts= get_v(bc);
- if(frame_type && key_frame){
- int64_t av_pts= pts * AV_TIME_BASE * stream->rate_den / stream->rate_num;
- av_add_index_entry(
- s->streams[stream_id],
- frame_start,
- av_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<<stream->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)
+static int enu_free(void *opaque, void *elem)
{
- 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 nut_read_timestamp(AVFormatContext *s, int stream_index, int64_t *pos_arg, int64_t pos_limit){
- NUTContext *nut = s->priv_data;
- StreamContext *stream;
- 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; i<s->nb_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;
-
- stream= &nut->stream[stream_id];
- pts= get_v(bc) * AV_TIME_BASE * stream->rate_den / stream->rate_num;
-
- 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;
-}
-
-static int nut_read_seek(AVFormatContext *s, int stream_index, int64_t target_ts){
- NUTContext *nut = s->priv_data;
- int64_t pos;
- int i;
-
- if(av_seek_frame_binary(s, stream_index, target_ts) < 0)
- return -1;
-
- nut->written_packet_size= -1;
- pos= url_ftell(&s->pb);
- for(i=0; i<s->nb_streams; i++)
- nut->stream[i].last_sync_pos= pos;
-
+ av_free(elem);
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;i<s->nb_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,
- nut_read_timestamp,
- .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;
-}
projects / ffmpeg / blobdiff