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Diffstat (limited to 'contrib/ffmpeg/libavformat/rtp_h264.c')
| -rw-r--r-- | contrib/ffmpeg/libavformat/rtp_h264.c | 413 |
1 files changed, 0 insertions, 413 deletions
diff --git a/contrib/ffmpeg/libavformat/rtp_h264.c b/contrib/ffmpeg/libavformat/rtp_h264.c deleted file mode 100644 index d38e8780d..000000000 --- a/contrib/ffmpeg/libavformat/rtp_h264.c +++ /dev/null @@ -1,413 +0,0 @@ -/* - * RTP H264 Protocol (RFC3984) - * Copyright (c) 2006 Ryan Martell. - * - * This file is part of FFmpeg. - * - * FFmpeg 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, - * 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 - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA - */ - -/** -* @file rtp_h264.c - * @brief H.264 / RTP Code (RFC3984) - * @author Ryan Martell <rdm4@martellventures.com> - * - * @note Notes: - * Notes: - * This currently supports packetization mode: - * Single Nal Unit Mode (0), or - * Non-Interleaved Mode (1). It currently does not support - * Interleaved Mode (2). (This requires implementing STAP-B, MTAP16, MTAP24, FU-B packet types) - * - * @note TODO: - * 1) RTCP sender reports for udp streams are required.. - * - */ - -#include "avformat.h" -#include "mpegts.h" -#include "bitstream.h" - -#include <unistd.h> -#include "network.h" -#include <assert.h> - -#include "rtp_internal.h" -#include "rtp_h264.h" -#include "base64.h" - -/** - RTP/H264 specific private data. -*/ -typedef struct h264_rtp_extra_data { - unsigned long cookie; ///< sanity check, to make sure we get the pointer we're expecting. - - //sdp setup parameters - uint8_t profile_idc; ///< from the sdp setup parameters. - uint8_t profile_iop; ///< from the sdp setup parameters. - uint8_t level_idc; ///< from the sdp setup parameters. - int packetization_mode; ///< from the sdp setup parameters. -#ifdef DEBUG - int packet_types_received[32]; -#endif -} h264_rtp_extra_data; - -#define MAGIC_COOKIE (0xdeadbeef) ///< Cookie for the extradata; to verify we are what we think we are, and that we haven't been freed. -#define DEAD_COOKIE (0xdeaddead) ///< Cookie for the extradata; once it is freed. - -/* ---------------- private code */ -static void sdp_parse_fmtp_config_h264(AVStream * stream, - h264_rtp_extra_data * h264_data, - char *attr, char *value) -{ - AVCodecContext *codec = stream->codec; - assert(codec->codec_id == CODEC_ID_H264); - assert(h264_data != NULL); - - if (!strcmp(attr, "packetization-mode")) { - av_log(NULL, AV_LOG_DEBUG, "H.264/RTP Packetization Mode: %d\n", atoi(attr)); - h264_data->packetization_mode = atoi(attr); - /* - Packetization Mode: - 0 or not present: Single NAL mode (Only nals from 1-23 are allowed) - 1: Non-interleaved Mode: 1-23, 24 (STAP-A), 28 (FU-A) are allowed. - 2: Interleaved Mode: 25 (STAP-B), 26 (MTAP16), 27 (MTAP24), 28 (FU-A), and 29 (FU-B) are allowed. - */ - if (h264_data->packetization_mode > 1) - av_log(stream, AV_LOG_ERROR, - "H.264/RTP Interleaved RTP mode is not supported yet."); - } else if (!strcmp(attr, "profile-level-id")) { - if (strlen(value) == 6) { - char buffer[3]; - // 6 characters=3 bytes, in hex. - uint8_t profile_idc; - uint8_t profile_iop; - uint8_t level_idc; - - buffer[0] = value[0]; buffer[1] = value[1]; buffer[2] = '\0'; - profile_idc = strtol(buffer, NULL, 16); - buffer[0] = value[2]; buffer[1] = value[3]; - profile_iop = strtol(buffer, NULL, 16); - buffer[0] = value[4]; buffer[1] = value[5]; - level_idc = strtol(buffer, NULL, 16); - - // set the parameters... - av_log(NULL, AV_LOG_DEBUG, - "H.264/RTP Profile IDC: %x Profile IOP: %x Level: %x\n", - profile_idc, profile_iop, level_idc); - h264_data->profile_idc = profile_idc; - h264_data->profile_iop = profile_iop; - h264_data->level_idc = level_idc; - } - } else if (!strcmp(attr, "sprop-parameter-sets")) { - uint8_t start_sequence[]= { 0, 0, 1 }; - codec->extradata_size= 0; - codec->extradata= NULL; - - while (*value) { - char base64packet[1024]; - uint8_t decoded_packet[1024]; - uint32_t packet_size; - char *dst = base64packet; - - while (*value && *value != ',' - && (dst - base64packet) < sizeof(base64packet) - 1) { - *dst++ = *value++; - } - *dst++ = '\0'; - - if (*value == ',') - value++; - - packet_size= av_base64_decode(decoded_packet, base64packet, sizeof(decoded_packet)); - if (packet_size) { - uint8_t *dest= av_malloc(packet_size+sizeof(start_sequence)+codec->extradata_size); - if(dest) - { - if(codec->extradata_size) - { - // av_realloc? - memcpy(dest, codec->extradata, codec->extradata_size); - av_free(codec->extradata); - } - - memcpy(dest+codec->extradata_size, start_sequence, sizeof(start_sequence)); - memcpy(dest+codec->extradata_size+sizeof(start_sequence), decoded_packet, packet_size); - - codec->extradata= dest; - codec->extradata_size+= sizeof(start_sequence)+packet_size; - } else { - av_log(NULL, AV_LOG_ERROR, "H.264/RTP Unable to allocate memory for extradata!"); - } - } - } - av_log(NULL, AV_LOG_DEBUG, "H.264/RTP Extradata set to %p (size: %d)!", codec->extradata, codec->extradata_size); - } -} - -// return 0 on packet, no more left, 1 on packet, 1 on partial packet... -static int h264_handle_packet(RTPDemuxContext * s, - AVPacket * pkt, - uint32_t * timestamp, - const uint8_t * buf, - int len) -{ -#ifdef DEBUG - h264_rtp_extra_data *data = s->dynamic_protocol_context; -#endif - uint8_t nal = buf[0]; - uint8_t type = (nal & 0x1f); - int result= 0; - uint8_t start_sequence[]= {0, 0, 1}; - - assert(data); - assert(data->cookie == MAGIC_COOKIE); - assert(buf); - - if (type >= 1 && type <= 23) - type = 1; // simplify the case. (these are all the nal types used internally by the h264 codec) - switch (type) { - case 0: // undefined; - result= -1; - break; - - case 1: - av_new_packet(pkt, len+sizeof(start_sequence)); - memcpy(pkt->data, start_sequence, sizeof(start_sequence)); - memcpy(pkt->data+sizeof(start_sequence), buf, len); -#ifdef DEBUG - data->packet_types_received[nal & 0x1f]++; -#endif - break; - - case 24: // STAP-A (one packet, multiple nals) - // consume the STAP-A NAL - buf++; - len--; - // first we are going to figure out the total size.... - { - int pass= 0; - int total_length= 0; - uint8_t *dst= NULL; - - for(pass= 0; pass<2; pass++) { - const uint8_t *src= buf; - int src_len= len; - - do { - uint16_t nal_size = AV_RB16(src); // this going to be a problem if unaligned (can it be?) - - // consume the length of the aggregate... - src += 2; - src_len -= 2; - - if (nal_size <= src_len) { - if(pass==0) { - // counting... - total_length+= sizeof(start_sequence)+nal_size; - } else { - // copying - assert(dst); - memcpy(dst, start_sequence, sizeof(start_sequence)); - dst+= sizeof(start_sequence); - memcpy(dst, src, nal_size); -#ifdef DEBUG - data->packet_types_received[*src & 0x1f]++; -#endif - dst+= nal_size; - } - } else { - av_log(NULL, AV_LOG_ERROR, - "nal size exceeds length: %d %d\n", nal_size, src_len); - } - - // eat what we handled... - src += nal_size; - src_len -= nal_size; - - if (src_len < 0) - av_log(NULL, AV_LOG_ERROR, - "Consumed more bytes than we got! (%d)\n", src_len); - } while (src_len > 2); // because there could be rtp padding.. - - if(pass==0) { - // now we know the total size of the packet (with the start sequences added) - av_new_packet(pkt, total_length); - dst= pkt->data; - } else { - assert(dst-pkt->data==total_length); - } - } - } - break; - - case 25: // STAP-B - case 26: // MTAP-16 - case 27: // MTAP-24 - case 29: // FU-B - av_log(NULL, AV_LOG_ERROR, - "Unhandled type (%d) (See RFC for implementation details\n", - type); - result= -1; - break; - - case 28: // FU-A (fragmented nal) - buf++; - len--; // skip the fu_indicator - { - // these are the same as above, we just redo them here for clarity... - uint8_t fu_indicator = nal; - uint8_t fu_header = *buf; // read the fu_header. - uint8_t start_bit = (fu_header & 0x80) >> 7; -// uint8_t end_bit = (fu_header & 0x40) >> 6; - uint8_t nal_type = (fu_header & 0x1f); - uint8_t reconstructed_nal; - - // reconstruct this packet's true nal; only the data follows.. - reconstructed_nal = fu_indicator & (0xe0); // the original nal forbidden bit and NRI are stored in this packet's nal; - reconstructed_nal |= (nal_type & 0x1f); - - // skip the fu_header... - buf++; - len--; - -#ifdef DEBUG - if (start_bit) - data->packet_types_received[nal_type & 0x1f]++; -#endif - if(start_bit) { - // copy in the start sequence, and the reconstructed nal.... - av_new_packet(pkt, sizeof(start_sequence)+sizeof(nal)+len); - memcpy(pkt->data, start_sequence, sizeof(start_sequence)); - pkt->data[sizeof(start_sequence)]= reconstructed_nal; - memcpy(pkt->data+sizeof(start_sequence)+sizeof(nal), buf, len); - } else { - av_new_packet(pkt, len); - memcpy(pkt->data, buf, len); - } - } - break; - - case 30: // undefined - case 31: // undefined - default: - av_log(NULL, AV_LOG_ERROR, "Undefined type (%d)", type); - result= -1; - break; - } - - return result; -} - -/* ---------------- public code */ -static void *h264_new_extradata() -{ - h264_rtp_extra_data *data = - av_mallocz(sizeof(h264_rtp_extra_data) + - FF_INPUT_BUFFER_PADDING_SIZE); - - if (data) { - data->cookie = MAGIC_COOKIE; - } - - return data; -} - -static void h264_free_extradata(void *d) -{ - h264_rtp_extra_data *data = (h264_rtp_extra_data *) d; -#ifdef DEBUG - int ii; - - for (ii = 0; ii < 32; ii++) { - if (data->packet_types_received[ii]) - av_log(NULL, AV_LOG_DEBUG, "Received %d packets of type %d\n", - data->packet_types_received[ii], ii); - } -#endif - - assert(data); - assert(data->cookie == MAGIC_COOKIE); - - // avoid stale pointers (assert) - data->cookie = DEAD_COOKIE; - - // and clear out this... - av_free(data); -} - -static int parse_h264_sdp_line(AVStream * stream, void *data, - const char *line) -{ - AVCodecContext *codec = stream->codec; - h264_rtp_extra_data *h264_data = (h264_rtp_extra_data *) data; - const char *p = line; - - assert(h264_data->cookie == MAGIC_COOKIE); - - if (strstart(p, "framesize:", &p)) { - char buf1[50]; - char *dst = buf1; - - // remove the protocol identifier.. - while (*p && *p == ' ') p++; // strip spaces. - while (*p && *p != ' ') p++; // eat protocol identifier - while (*p && *p == ' ') p++; // strip trailing spaces. - while (*p && *p != '-' && (buf1 - dst) < sizeof(buf1) - 1) { - *dst++ = *p++; - } - *dst = '\0'; - - // a='framesize:96 320-240' - // set our parameters.. - codec->width = atoi(buf1); - codec->height = atoi(p + 1); // skip the - - codec->pix_fmt = PIX_FMT_YUV420P; - } else if (strstart(p, "fmtp:", &p)) { - char attr[256]; - char value[4096]; - - // remove the protocol identifier.. - while (*p && *p == ' ') p++; // strip spaces. - while (*p && *p != ' ') p++; // eat protocol identifier - while (*p && *p == ' ') p++; // strip trailing spaces. - - /* loop on each attribute */ - while (rtsp_next_attr_and_value - (&p, attr, sizeof(attr), value, sizeof(value))) { - /* grab the codec extra_data from the config parameter of the fmtp line */ - sdp_parse_fmtp_config_h264(stream, h264_data, attr, value); - } - } else if (strstart(p, "cliprect:", &p)) { - // could use this if we wanted. - } - - 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) - - return 0; // keep processing it the normal way... -} - -/** -This is the structure for expanding on the dynamic rtp protocols (makes everything static. yay!) -*/ -RTPDynamicProtocolHandler ff_h264_dynamic_handler = { - "H264", - CODEC_TYPE_VIDEO, - CODEC_ID_H264, - parse_h264_sdp_line, - h264_new_extradata, - h264_free_extradata, - h264_handle_packet -}; |