Revision 1d1be919

View differences:

libavformat/Makefile
168 168
ifeq ($(CONFIG_PROTOCOLS),yes)
169 169
OBJS+= file.o
170 170
ifeq ($(CONFIG_NETWORK),yes)
171
OBJS+= udp.o tcp.o http.o rtsp.o rtp.o rtpproto.o mpegts.o base64.o
171
OBJS+= udp.o tcp.o http.o rtsp.o rtp.o rtpproto.o mpegts.o base64.o rtp_h264.o
172 172
# BeOS and Darwin network stuff
173 173
ifeq ($(NEED_INET_ATON),yes)
174 174
OBJS+= barpainet.o
libavformat/rtp.c
34 34
#include <netdb.h>
35 35

  
36 36
#include "rtp_internal.h"
37

  
38
//#define RTP_H264
39
#ifdef RTP_H264
40
    #include "rtp_h264.h"
41
#endif
37
#include "rtp_h264.h"
42 38

  
43 39
//#define DEBUG
44 40

  
......
202 198
{
203 199
    register_dynamic_payload_handler(&mp4v_es_handler);
204 200
    register_dynamic_payload_handler(&mpeg4_generic_handler);
205
#ifdef RTP_H264
206 201
    register_dynamic_payload_handler(&ff_h264_dynamic_handler);
207
#endif
208 202
}
209 203

  
210 204
int rtp_get_codec_info(AVCodecContext *codec, int payload_type)
......
488 482
        case CODEC_ID_MP2:
489 483
        case CODEC_ID_MP3:
490 484
        case CODEC_ID_MPEG4:
491
#ifdef RTP_H264
492 485
        case CODEC_ID_H264:
493
#endif
494 486
            st->need_parsing = 1;
495 487
            break;
496 488
        default:
libavformat/rtp_h264.c
1
/*
2
 * RTP H264 Protocol (RFC3984)
3
 * Copyright (c) 2006 Ryan Martell.
4
 *
5
 * This file is part of FFmpeg.
6
 *
7
 * FFmpeg is free software; you can redistribute it and/or
8
 * modify it under the terms of the GNU Lesser General Public
9
 * License as published by the Free Software Foundation; either
10
 * version 2.1 of the License, or (at your option) any later version.
11
 *
12
 * FFmpeg is distributed in the hope that it will be useful,
13
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15
 * Lesser General Public License for more details.
16
 *
17
 * You should have received a copy of the GNU Lesser General Public
18
 * License along with FFmpeg; if not, write to the Free Software
19
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20
 */
21

  
22
/**
23
* @file rtp_h264.c
24
 * @brief H.264 / RTP Code (RFC3984)
25
 * @author Ryan Martell <rdm4@martellventures.com>
26
 *
27
 * @note Notes:
28
 * Notes:
29
 * This currently supports packetization mode:
30
 * Single Nal Unit Mode (0), or
31
 * Non-Interleaved Mode (1).  It currently does not support
32
 * Interleaved Mode (2). (This requires implementing STAP-B, MTAP16, MTAP24, FU-B packet types)
33
 *
34
 * @note TODO:
35
 * 1) RTCP sender reports for udp streams are required..
36
 *
37
 */
38

  
39
#include "avformat.h"
40
#include "mpegts.h"
41
#include "bitstream.h"
42

  
43
#include <unistd.h>
44
#include <sys/types.h>
45
#include <sys/socket.h>
46
#include <netinet/in.h>
47
#include <assert.h>
48
#ifndef __BEOS__
49
# include <arpa/inet.h>
50
#else
51
# include "barpainet.h"
52
#endif
53
#include <netdb.h>
54

  
55
#include "rtp_internal.h"
56
#include "rtp_h264.h"
57
#include "base64.h"
58

  
59
/**
60
    RTP/H264 specific private data.
61
*/
62
typedef struct h264_rtp_extra_data {
63
    unsigned long cookie;       ///< sanity check, to make sure we get the pointer we're expecting.
64

  
65
    //sdp setup parameters
66
    uint8_t profile_idc;        ///< from the sdp setup parameters.
67
    uint8_t profile_iop;        ///< from the sdp setup parameters.
68
    uint8_t level_idc;          ///< from the sdp setup parameters.
69
    int packetization_mode;     ///< from the sdp setup parameters.
70
#ifdef DEBUG
71
    int packet_types_received[32];
72
#endif
73
} h264_rtp_extra_data;
74

  
75
#define MAGIC_COOKIE (0xdeadbeef)       ///< Cookie for the extradata; to verify we are what we think we are, and that we haven't been freed.
76
#define DEAD_COOKIE (0xdeaddead)        ///< Cookie for the extradata; once it is freed.
77

  
78
/* ---------------- private code */
79
static void sdp_parse_fmtp_config_h264(AVStream * stream,
80
                                       h264_rtp_extra_data * h264_data,
81
                                       char *attr, char *value)
82
{
83
    AVCodecContext *codec = stream->codec;
84
    assert(codec->codec_id == CODEC_ID_H264);
85
    assert(h264_data != NULL);
86

  
87
    if (!strcmp(attr, "packetization-mode")) {
88
        av_log(NULL, AV_LOG_DEBUG, "H.264/RTP Packetization Mode: %d\n", atoi(attr));
89
        h264_data->packetization_mode = atoi(attr);
90
        /*
91
           Packetization Mode:
92
           0 or not present: Single NAL mode (Only nals from 1-23 are allowed)
93
           1: Non-interleaved Mode: 1-23, 24 (STAP-A), 28 (FU-A) are allowed.
94
           2: Interleaved Mode: 25 (STAP-B), 26 (MTAP16), 27 (MTAP24), 28 (FU-A), and 29 (FU-B) are allowed.
95
         */
96
        if (h264_data->packetization_mode > 1)
97
            av_log(stream, AV_LOG_ERROR,
98
                   "H.264/RTP Interleaved RTP mode is not supported yet.");
99
    } else if (!strcmp(attr, "profile-level-id")) {
100
        if (strlen(value) == 6) {
101
            char buffer[3];
102
            // 6 characters=3 bytes, in hex.
103
            uint8_t profile_idc;
104
            uint8_t profile_iop;
105
            uint8_t level_idc;
106

  
107
            buffer[0] = value[0]; buffer[1] = value[1]; buffer[2] = '\0';
108
            profile_idc = strtol(buffer, NULL, 16);
109
            buffer[0] = value[2]; buffer[1] = value[3];
110
            profile_iop = strtol(buffer, NULL, 16);
111
            buffer[0] = value[4]; buffer[1] = value[5];
112
            level_idc = strtol(buffer, NULL, 16);
113

  
114
            // set the parameters...
115
            av_log(NULL, AV_LOG_DEBUG,
116
                   "H.264/RTP Profile IDC: %x Profile IOP: %x Level: %x\n",
117
                   profile_idc, profile_iop, level_idc);
118
            h264_data->profile_idc = profile_idc;
119
            h264_data->profile_iop = profile_iop;
120
            h264_data->level_idc = level_idc;
121
        }
122
    } else  if (!strcmp(attr, "sprop-parameter-sets")) {
123
        uint8_t start_sequence[]= { 0, 0, 1 };
124
        codec->extradata_size= 0;
125
        codec->extradata= NULL;
126

  
127
        while (*value) {
128
            char base64packet[1024];
129
            uint8_t decoded_packet[1024];
130
            uint32_t packet_size;
131
            char *dst = base64packet;
132

  
133
            while (*value && *value != ','
134
                   && (dst - base64packet) < sizeof(base64packet) - 1) {
135
                *dst++ = *value++;
136
            }
137
            *dst++ = '\0';
138

  
139
            if (*value == ',')
140
                value++;
141

  
142
            packet_size= av_base64_decode(decoded_packet, base64packet, sizeof(decoded_packet));
143
            if (packet_size) {
144
                uint8_t *dest= av_malloc(packet_size+sizeof(start_sequence)+codec->extradata_size);
145
                if(dest)
146
                {
147
                    if(codec->extradata_size)
148
                    {
149
                        // av_realloc?
150
                        memcpy(dest, codec->extradata, codec->extradata_size);
151
                        av_free(codec->extradata);
152
                    }
153

  
154
                    memcpy(dest+codec->extradata_size, start_sequence, sizeof(start_sequence));
155
                    memcpy(dest+codec->extradata_size+sizeof(start_sequence), decoded_packet, packet_size);
156

  
157
                    codec->extradata= dest;
158
                    codec->extradata_size+= sizeof(start_sequence)+packet_size;
159
                } else {
160
                    av_log(NULL, AV_LOG_ERROR, "H.264/RTP Unable to allocate memory for extradata!");
161
                }
162
            }
163
        }
164
        av_log(NULL, AV_LOG_DEBUG, "H.264/RTP Extradata set to %p (size: %d)!", codec->extradata, codec->extradata_size);
165
    }
166
}
167

  
168
// return 0 on packet, no more left, 1 on packet, 1 on partial packet...
169
static int h264_handle_packet(RTPDemuxContext * s,
170
                              AVPacket * pkt,
171
                              uint32_t * timestamp,
172
                              const uint8_t * buf,
173
                              int len)
174
{
175
//    h264_rtp_extra_data *data = s->dynamic_protocol_context;
176
    uint8_t nal = buf[0];
177
    uint8_t type = (nal & 0x1f);
178
    int result= 0;
179
    uint8_t start_sequence[]= {0, 0, 1};
180

  
181
    assert(data);
182
    assert(data->cookie == MAGIC_COOKIE);
183
    assert(buf);
184

  
185
    if (type >= 1 && type <= 23)
186
        type = 1;              // simplify the case. (these are all the nal types used internally by the h264 codec)
187
    switch (type) {
188
    case 0:                    // undefined;
189
        result= -1;
190
        break;
191

  
192
    case 1:
193
        av_new_packet(pkt, len+sizeof(start_sequence));
194
        memcpy(pkt->data, start_sequence, sizeof(start_sequence));
195
        memcpy(pkt->data+sizeof(start_sequence), buf, len);
196
#ifdef DEBUG
197
        data->packet_types_received[nal & 0x1f]++;
198
#endif
199
        break;
200

  
201
    case 24:                   // STAP-A (one packet, multiple nals)
202
        // consume the STAP-A NAL
203
        buf++;
204
        len--;
205
        // first we are going to figure out the total size....
206
        {
207
            int pass= 0;
208
            int total_length= 0;
209
            uint8_t *dst= NULL;
210

  
211
            for(pass= 0; pass<2; pass++) {
212
                const uint8_t *src= buf;
213
                int src_len= len;
214

  
215
                do {
216
                    uint16_t nal_size = BE_16(src); // this going to be a problem if unaligned (can it be?)
217

  
218
                    // consume the length of the aggregate...
219
                    src += 2;
220
                    src_len -= 2;
221

  
222
                    if (nal_size <= src_len) {
223
                        if(pass==0) {
224
                            // counting...
225
                            total_length+= sizeof(start_sequence)+nal_size;
226
                        } else {
227
                            // copying
228
                            assert(dst);
229
                            memcpy(dst, start_sequence, sizeof(start_sequence));
230
                            dst+= sizeof(start_sequence);
231
                            memcpy(dst, src, nal_size);
232
#ifdef DEBUG
233
                            data->packet_types_received[*src & 0x1f]++;
234
#endif
235
                            dst+= nal_size;
236
                        }
237
                    } else {
238
                        av_log(NULL, AV_LOG_ERROR,
239
                               "nal size exceeds length: %d %d\n", nal_size, src_len);
240
                    }
241

  
242
                    // eat what we handled...
243
                    src += nal_size;
244
                    src_len -= nal_size;
245

  
246
                    if (src_len < 0)
247
                        av_log(NULL, AV_LOG_ERROR,
248
                               "Consumed more bytes than we got! (%d)\n", src_len);
249
                } while (src_len > 2);      // because there could be rtp padding..
250

  
251
                if(pass==0) {
252
                    // now we know the total size of the packet (with the start sequences added)
253
                    av_new_packet(pkt, total_length);
254
                    dst= pkt->data;
255
                } else {
256
                    assert(dst-pkt->data==total_length);
257
                }
258
            }
259
        }
260
        break;
261

  
262
    case 25:                   // STAP-B
263
    case 26:                   // MTAP-16
264
    case 27:                   // MTAP-24
265
    case 29:                   // FU-B
266
        av_log(NULL, AV_LOG_ERROR,
267
               "Unhandled type (%d) (See RFC for implementation details\n",
268
               type);
269
        result= -1;
270
        break;
271

  
272
    case 28:                   // FU-A (fragmented nal)
273
        buf++;
274
        len--;                  // skip the fu_indicator
275
        {
276
            // these are the same as above, we just redo them here for clarity...
277
            uint8_t fu_indicator = nal;
278
            uint8_t fu_header = *buf;   // read the fu_header.
279
            uint8_t start_bit = (fu_header & 0x80) >> 7;
280
//            uint8_t end_bit = (fu_header & 0x40) >> 6;
281
            uint8_t nal_type = (fu_header & 0x1f);
282
            uint8_t reconstructed_nal;
283

  
284
            // reconstruct this packet's true nal; only the data follows..
285
            reconstructed_nal = fu_indicator & (0xe0);  // the original nal forbidden bit and NRI are stored in this packet's nal;
286
            reconstructed_nal |= (nal_type & 0x1f);
287

  
288
            // skip the fu_header...
289
            buf++;
290
            len--;
291

  
292
#ifdef DEBUG
293
            if (start_bit)
294
                data->packet_types_received[nal_type & 0x1f]++;
295
#endif
296
            if(start_bit) {
297
                // copy in the start sequence, and the reconstructed nal....
298
                av_new_packet(pkt, sizeof(start_sequence)+sizeof(nal)+len);
299
                memcpy(pkt->data, start_sequence, sizeof(start_sequence));
300
                pkt->data[sizeof(start_sequence)]= reconstructed_nal;
301
                memcpy(pkt->data+sizeof(start_sequence)+sizeof(nal), buf, len);
302
            } else {
303
                av_new_packet(pkt, len);
304
                memcpy(pkt->data, buf, len);
305
            }
306
        }
307
        break;
308

  
309
    case 30:                   // undefined
310
    case 31:                   // undefined
311
    default:
312
        av_log(NULL, AV_LOG_ERROR, "Undefined type (%d)", type);
313
        result= -1;
314
        break;
315
    }
316

  
317
    return result;
318
}
319

  
320
/* ---------------- public code */
321
static void *h264_new_extradata()
322
{
323
    h264_rtp_extra_data *data =
324
        av_mallocz(sizeof(h264_rtp_extra_data) +
325
                   FF_INPUT_BUFFER_PADDING_SIZE);
326

  
327
    if (data) {
328
        data->cookie = MAGIC_COOKIE;
329
    }
330

  
331
    return data;
332
}
333

  
334
static void h264_free_extradata(void *d)
335
{
336
    h264_rtp_extra_data *data = (h264_rtp_extra_data *) d;
337
#ifdef DEBUG
338
    int ii;
339

  
340
    for (ii = 0; ii < 32; ii++) {
341
        if (data->packet_types_received[ii])
342
            av_log(NULL, AV_LOG_DEBUG, "Received %d packets of type %d\n",
343
                   data->packet_types_received[ii], ii);
344
    }
345
#endif
346

  
347
    assert(data);
348
    assert(data->cookie == MAGIC_COOKIE);
349

  
350
    // avoid stale pointers (assert)
351
    data->cookie = DEAD_COOKIE;
352

  
353
    // and clear out this...
354
    av_free(data);
355
}
356

  
357
static int parse_h264_sdp_line(AVStream * stream, void *data,
358
                               const char *line)
359
{
360
    AVCodecContext *codec = stream->codec;
361
    h264_rtp_extra_data *h264_data = (h264_rtp_extra_data *) data;
362
    const char *p = line;
363

  
364
    assert(h264_data->cookie == MAGIC_COOKIE);
365

  
366
    if (strstart(p, "framesize:", &p)) {
367
        char buf1[50];
368
        char *dst = buf1;
369

  
370
        // remove the protocol identifier..
371
        while (*p && *p == ' ') p++; // strip spaces.
372
        while (*p && *p != ' ') p++; // eat protocol identifier
373
        while (*p && *p == ' ') p++; // strip trailing spaces.
374
        while (*p && *p != '-' && (buf1 - dst) < sizeof(buf1) - 1) {
375
            *dst++ = *p++;
376
        }
377
        *dst = '\0';
378

  
379
        // a='framesize:96 320-240'
380
        // set our parameters..
381
        codec->width = atoi(buf1);
382
        codec->height = atoi(p + 1); // skip the -
383
        codec->pix_fmt = PIX_FMT_YUV420P;
384
    } else if (strstart(p, "fmtp:", &p)) {
385
        char attr[256];
386
        char value[4096];
387

  
388
        // remove the protocol identifier..
389
        while (*p && *p == ' ') p++; // strip spaces.
390
        while (*p && *p != ' ') p++; // eat protocol identifier
391
        while (*p && *p == ' ') p++; // strip trailing spaces.
392

  
393
        /* loop on each attribute */
394
        while (rtsp_next_attr_and_value
395
               (&p, attr, sizeof(attr), value, sizeof(value))) {
396
            /* grab the codec extra_data from the config parameter of the fmtp line */
397
            sdp_parse_fmtp_config_h264(stream, h264_data, attr, value);
398
        }
399
    } else if (strstart(p, "cliprect:", &p)) {
400
        // could use this if we wanted.
401
    }
402

  
403
    av_set_pts_info(stream, 33, 1, 90000);      // 33 should be right, because the pts is 64 bit? (done elsewhere; this is a one time thing)
404

  
405
    return 0;                   // keep processing it the normal way...
406
}
407

  
408
/**
409
This is the structure for expanding on the dynamic rtp protocols (makes everything static. yay!)
410
*/
411
RTPDynamicProtocolHandler ff_h264_dynamic_handler = {
412
    "H264",
413
    CODEC_TYPE_VIDEO,
414
    CODEC_ID_H264,
415
    parse_h264_sdp_line,
416
    h264_new_extradata,
417
    h264_free_extradata,
418
    h264_handle_packet
419
};
libavformat/rtp_h264.h
1
/*
2
 * RTP H264 Protocol (RFC3984)
3
 * Copyright (c) 2006 Ryan Martell.
4
 *
5
 * This file is part of FFmpeg.
6
 *
7
 * FFmpeg is free software; you can redistribute it and/or
8
 * modify it under the terms of the GNU Lesser General Public
9
 * License as published by the Free Software Foundation; either
10
 * version 2.1 of the License, or (at your option) any later version.
11
 *
12
 * FFmpeg is distributed in the hope that it will be useful,
13
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15
 * Lesser General Public License for more details.
16
 *
17
 * You should have received a copy of the GNU Lesser General Public
18
 * License along with FFmpeg; if not, write to the Free Software
19
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20
 */
21

  
22
#ifndef RTP_H264_H
23
#define RTP_H264_H
24

  
25
extern RTPDynamicProtocolHandler ff_h264_dynamic_handler;
26
#endif /* RTP_H264_H */

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