diff options
Diffstat (limited to 'libavformat/rtpenc_h264.c')
| -rw-r--r-- | libavformat/rtpenc_h264.c | 136 |
1 files changed, 0 insertions, 136 deletions
diff --git a/libavformat/rtpenc_h264.c b/libavformat/rtpenc_h264.c deleted file mode 100644 index 65444c8565..0000000000 --- a/libavformat/rtpenc_h264.c +++ /dev/null @@ -1,136 +0,0 @@ -/* - * RTP packetization for H.264 (RFC3984) - * Copyright (c) 2008 Luca Abeni - * - * 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 - * @brief H.264 packetization - * @author Luca Abeni <lucabe72@email.it> - */ - -#include "libavutil/intreadwrite.h" - -#include "avformat.h" -#include "avc.h" -#include "rtpenc.h" - -static void flush_buffered(AVFormatContext *s1, int last) -{ - RTPMuxContext *s = s1->priv_data; - if (s->buf_ptr != s->buf) { - // If we're only sending one single NAL unit, send it as such, skip - // the STAP-A framing - if (s->buffered_nals == 1) - ff_rtp_send_data(s1, s->buf + 3, s->buf_ptr - s->buf - 3, last); - else - ff_rtp_send_data(s1, s->buf, s->buf_ptr - s->buf, last); - } - s->buf_ptr = s->buf; - s->buffered_nals = 0; -} - -static void nal_send(AVFormatContext *s1, const uint8_t *buf, int size, int last) -{ - RTPMuxContext *s = s1->priv_data; - - av_log(s1, AV_LOG_DEBUG, "Sending NAL %x of len %d M=%d\n", buf[0] & 0x1F, size, last); - if (size <= s->max_payload_size) { - int buffered_size = s->buf_ptr - s->buf; - // Flush buffered NAL units if the current unit doesn't fit - if (buffered_size + 2 + size > s->max_payload_size) { - flush_buffered(s1, 0); - buffered_size = 0; - } - // If we aren't using mode 0, and the NAL unit fits including the - // framing (2 bytes length, plus 1 byte for the STAP-A marker), - // write the unit to the buffer as a STAP-A packet, otherwise flush - // and send as single NAL. - if (buffered_size + 3 + size <= s->max_payload_size && - !(s->flags & FF_RTP_FLAG_H264_MODE0)) { - if (buffered_size == 0) - *s->buf_ptr++ = 24; - AV_WB16(s->buf_ptr, size); - s->buf_ptr += 2; - memcpy(s->buf_ptr, buf, size); - s->buf_ptr += size; - s->buffered_nals++; - } else { - flush_buffered(s1, 0); - ff_rtp_send_data(s1, buf, size, last); - } - } else { - uint8_t type = buf[0] & 0x1F; - uint8_t nri = buf[0] & 0x60; - - flush_buffered(s1, 0); - if (s->flags & FF_RTP_FLAG_H264_MODE0) { - av_log(s1, AV_LOG_ERROR, - "NAL size %d > %d, try -slice-max-size %d\n", size, - s->max_payload_size, s->max_payload_size); - return; - } - av_log(s1, AV_LOG_DEBUG, "NAL size %d > %d\n", size, s->max_payload_size); - s->buf[0] = 28; /* FU Indicator; Type = 28 ---> FU-A */ - s->buf[0] |= nri; - s->buf[1] = type; - s->buf[1] |= 1 << 7; - buf += 1; - size -= 1; - while (size + 2 > s->max_payload_size) { - memcpy(&s->buf[2], buf, s->max_payload_size - 2); - ff_rtp_send_data(s1, s->buf, s->max_payload_size, 0); - buf += s->max_payload_size - 2; - size -= s->max_payload_size - 2; - s->buf[1] &= ~(1 << 7); - } - s->buf[1] |= 1 << 6; - memcpy(&s->buf[2], buf, size); - ff_rtp_send_data(s1, s->buf, size + 2, last); - } -} - -void ff_rtp_send_h264(AVFormatContext *s1, const uint8_t *buf1, int size) -{ - const uint8_t *r, *end = buf1 + size; - RTPMuxContext *s = s1->priv_data; - - s->timestamp = s->cur_timestamp; - s->buf_ptr = s->buf; - if (s->nal_length_size) - r = ff_avc_mp4_find_startcode(buf1, end, s->nal_length_size) ? buf1 : end; - else - r = ff_avc_find_startcode(buf1, end); - while (r < end) { - const uint8_t *r1; - - if (s->nal_length_size) { - r1 = ff_avc_mp4_find_startcode(r, end, s->nal_length_size); - if (!r1) - r1 = end; - r += s->nal_length_size; - } else { - while (!*(r++)); - r1 = ff_avc_find_startcode(r, end); - } - nal_send(s1, r, r1 - r, r1 == end); - r = r1; - } - flush_buffered(s1, 1); -} |