5 #define ID_STRING "nut/multimedia container"
6 #define ID_LENGTH (strlen(ID_STRING) + 1)
10 nut_stream_header_t * s;
13 static const CodecTag nut_tags[] = {
14 { CODEC_ID_MPEG4, MKTAG('m', 'p', '4', 's') },
15 { CODEC_ID_MP3, MKTAG('m', 'p', '3', ' ') },
16 { CODEC_ID_VORBIS, MKTAG('v', 'r', 'b', 's') },
21 frame_table_input_t ft_default[] = {
22 // There must be atleast this safety net:
23 //{ 4128, 3, 0, 1, 0, 0, 0 },
24 //{ flag, fields, pts, mul, stream, size, count }
25 { 8192, 0, 0, 1, 0, 0, 0 }, // invalid 0x00
26 { 56, 0, 0, 1, 0, 0, 0 }, // safety net non key frame
27 { 56, 0, 0, 1, 0, 0, 0 }, // safety net key frame
28 { 4128, 0, 0, 1, 0, 0, 0 }, // one more safety net
29 { 27, 0, 0, 1, 0, 0, 0 }, // EOR frame
30 { 1, 4, 1, 337, 1, 336, 0 }, // used 82427 times
31 { 1, 4, 1, 385, 1, 384, 0 }, // used 56044 times
32 { 0, 4, 2, 7, 0, 6, 0 }, // used 20993 times
33 { 0, 4, 1, 7, 0, 6, 0 }, // used 10398 times
34 { 1, 4, 1, 481, 1, 480, 0 }, // used 3527 times
35 { 1, 4, 1, 289, 1, 288, 0 }, // used 2042 times
36 { 1, 4, 1, 577, 1, 576, 0 }, // used 1480 times
37 { 1, 4, 1, 673, 1, 672, 0 }, // used 862 times
38 { 1, 4, 1, 769, 1, 768, 0 }, // used 433 times
39 { 1, 4, 1, 961, 1, 960, 0 }, // used 191 times
40 { 32, 3, 2, 101, 0, 0, 0 }, // "1.2.0" => 14187
41 { 32, 3, -1, 40, 0, 0, 0 }, // "1.-1.0" => 5707
42 { 32, 3, 1, 81, 0, 0, 0 }, // "1.1.0" => 11159
43 { 33, 3, 1, 11, 0, 0, 0 }, // "1.1.1" => 1409
44 { 105, 3, 0, 6, 0, 0, 0 }, // checksum for video
45 { 8192, 2, 0, 1, 0, 0, 0 }, // invalid 0xFF
46 { -1, 0, 0, 0, 0, 0, 0 }, // end
49 static int av_write(void * h, size_t len, const uint8_t * buf) {
50 ByteIOContext * bc = h;
51 put_buffer(bc, buf, len);
52 //put_flush_packet(bc);
56 static int nut_write_header(AVFormatContext * avf) {
57 NUTContext * priv = avf->priv_data;
58 ByteIOContext * bc = &avf->pb;
59 nut_muxer_opts_t mopts = {
64 .alloc = { av_malloc, av_realloc, av_free },
67 .max_distance = 32768,
70 nut_stream_header_t * s;
73 priv->s = s = av_mallocz((avf->nb_streams + 1) * sizeof*s);
75 for (i = 0; i < avf->nb_streams; i++) {
76 AVCodecContext * codec = avf->streams[i]->codec;
79 int nom, denom, ssize;
81 s[i].type = codec->codec_type == CODEC_TYPE_VIDEO ? NUT_VIDEO_CLASS : NUT_AUDIO_CLASS;
83 if (codec->codec_tag) fourcc = codec->codec_tag;
84 else fourcc = codec_get_tag(nut_tags, codec->codec_id);
87 if (codec->codec_type == CODEC_TYPE_VIDEO) fourcc = codec_get_bmp_tag(codec->codec_id);
88 if (codec->codec_type == CODEC_TYPE_AUDIO) fourcc = codec_get_wav_tag(codec->codec_id);
92 s[i].fourcc = av_malloc(s[i].fourcc_len);
93 for (j = 0; j < s[i].fourcc_len; j++) s[i].fourcc[j] = (fourcc >> (j*8)) & 0xFF;
95 ff_parse_specific_params(codec, &nom, &ssize, &denom);
96 av_set_pts_info(avf->streams[i], 60, denom, nom);
98 s[i].time_base.nom = denom;
99 s[i].time_base.den = nom;
102 s[i].decode_delay = codec->has_b_frames;
103 s[i].codec_specific_len = codec->extradata_size;
104 s[i].codec_specific = codec->extradata;
106 if (codec->codec_type == CODEC_TYPE_VIDEO) {
107 s[i].width = codec->width;
108 s[i].height = codec->height;
109 s[i].sample_width = 0;
110 s[i].sample_height = 0;
111 s[i].colorspace_type = 0;
113 s[i].samplerate_nom = codec->sample_rate;
114 s[i].samplerate_denom = 1;
115 s[i].channel_count = codec->channels;
119 s[avf->nb_streams].type = -1;
120 priv->nut = nut_muxer_init(&mopts, s, NULL);
125 static int nut_write_packet(AVFormatContext * avf, AVPacket * pkt) {
126 NUTContext * priv = avf->priv_data;
130 p.stream = pkt->stream_index;
132 p.flags = pkt->flags & PKT_FLAG_KEY ? NUT_FLAG_KEY : 0;
135 nut_write_frame_reorder(priv->nut, &p, pkt->data);
140 static int nut_write_trailer(AVFormatContext * avf) {
141 ByteIOContext * bc = &avf->pb;
142 NUTContext * priv = avf->priv_data;
145 nut_muxer_uninit_reorder(priv->nut);
146 put_flush_packet(bc);
148 for(i = 0; priv->s[i].type != -1; i++ ) av_freep(&priv->s[i].fourcc);
154 AVOutputFormat nut_muxer = {
165 .flags = AVFMT_GLOBALHEADER,
167 #endif //CONFIG_MUXERS
169 static int nut_probe(AVProbeData *p) {
170 if (p->buf_size >= ID_LENGTH && !memcmp(p->buf, ID_STRING, ID_LENGTH)) return AVPROBE_SCORE_MAX;
175 static size_t av_read(void * h, size_t len, uint8_t * buf) {
176 ByteIOContext * bc = h;
177 return get_buffer(bc, buf, len);
180 static off_t av_seek(void * h, long long pos, int whence) {
181 ByteIOContext * bc = h;
182 if (whence == SEEK_END) {
183 pos = url_fsize(bc) + pos;
186 return url_fseek(bc, pos, whence);
189 static int nut_read_header(AVFormatContext * avf, AVFormatParameters * ap) {
190 NUTContext * priv = avf->priv_data;
191 ByteIOContext * bc = &avf->pb;
192 nut_demuxer_opts_t dopts = {
200 .alloc = { av_malloc, av_realloc, av_free },
203 nut_context_t * nut = priv->nut = nut_demuxer_init(&dopts);
204 nut_stream_header_t * s;
207 if ((ret = nut_read_headers(nut, &s, NULL))) {
208 if (ret < 0) av_log(avf, AV_LOG_ERROR, " NUT error: %s\n", nut_error(-ret));
209 nut_demuxer_uninit(nut);
215 for (i = 0; s[i].type != -1 && i < 2; i++) {
216 AVStream * st = av_new_stream(avf, i);
219 for (j = 0; j < s[i].fourcc_len && j < 8; j++) st->codec->codec_tag |= s[i].fourcc[j]<<(j*8);
221 st->codec->has_b_frames = s[i].decode_delay;
223 st->codec->extradata_size = s[i].codec_specific_len;
224 if (st->codec->extradata_size) {
225 st->codec->extradata = av_mallocz(st->codec->extradata_size);
226 memcpy(st->codec->extradata, s[i].codec_specific, st->codec->extradata_size);
229 av_set_pts_info(avf->streams[i], 60, s[i].time_base.nom, s[i].time_base.den);
231 st->duration = s[i].max_pts;
233 st->codec->codec_id = codec_get_id(nut_tags, st->codec->codec_tag);
236 case NUT_AUDIO_CLASS:
237 st->codec->codec_type = CODEC_TYPE_AUDIO;
238 if (st->codec->codec_id == CODEC_ID_NONE) st->codec->codec_id = codec_get_wav_id(st->codec->codec_tag);
240 st->codec->channels = s[i].channel_count;
241 st->codec->sample_rate = s[i].samplerate_nom / s[i].samplerate_denom;
243 case NUT_VIDEO_CLASS:
244 st->codec->codec_type = CODEC_TYPE_VIDEO;
245 if (st->codec->codec_id == CODEC_ID_NONE) st->codec->codec_id = codec_get_bmp_id(st->codec->codec_tag);
247 st->codec->width = s[i].width;
248 st->codec->height = s[i].height;
249 st->codec->sample_aspect_ratio.num = s[i].sample_width;
250 st->codec->sample_aspect_ratio.den = s[i].sample_height;
253 if (st->codec->codec_id == CODEC_ID_NONE) av_log(avf, AV_LOG_ERROR, "Unknown codec?!\n");
259 static int nut_read_packet(AVFormatContext * avf, AVPacket * pkt) {
260 NUTContext * priv = avf->priv_data;
264 while ((ret = nut_read_next_packet(priv->nut, &pd)) < 0)
265 av_log(avf, AV_LOG_ERROR, " NUT error: %s\n", nut_error(-ret));
267 if (ret || av_new_packet(pkt, pd.len) < 0) return -1;
269 if (pd.flags & NUT_FLAG_KEY) pkt->flags |= PKT_FLAG_KEY;
271 pkt->stream_index = pd.stream;
272 pkt->pos = url_ftell(&avf->pb);
274 ret = nut_read_frame(priv->nut, &pd.len, pkt->data);
279 static int nut_read_seek(AVFormatContext * avf, int stream_index, int64_t target_ts, int flags) {
280 NUTContext * priv = avf->priv_data;
281 int active_streams[] = { stream_index, -1 };
282 double time_pos = target_ts * priv->s[stream_index].time_base.nom / (double)priv->s[stream_index].time_base.den;
284 if (nut_seek(priv->nut, time_pos, 2*!(flags & AVSEEK_FLAG_BACKWARD), active_streams)) return -1;
289 static int nut_read_close(AVFormatContext *s) {
290 NUTContext * priv = s->priv_data;
292 nut_demuxer_uninit(priv->nut);
298 AVInputFormat nut_demuxer = {