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Diffstat (limited to 'ffmpeg1/libavformat/rtpdec_qt.c')
-rw-r--r--ffmpeg1/libavformat/rtpdec_qt.c258
1 files changed, 0 insertions, 258 deletions
diff --git a/ffmpeg1/libavformat/rtpdec_qt.c b/ffmpeg1/libavformat/rtpdec_qt.c
deleted file mode 100644
index 8e887a5..0000000
--- a/ffmpeg1/libavformat/rtpdec_qt.c
+++ /dev/null
@@ -1,258 +0,0 @@
-/*
- * RTP/Quicktime support.
- * Copyright (c) 2009 Ronald S. Bultje
- *
- * 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 Quicktime-style RTP support
- * @author Ronald S. Bultje <rbultje@ronald.bitfreak.net>
- */
-
-#include "avformat.h"
-#include "internal.h"
-#include "avio_internal.h"
-#include "rtp.h"
-#include "rtpdec.h"
-#include "isom.h"
-#include "libavcodec/get_bits.h"
-
-struct PayloadContext {
- AVPacket pkt;
- int bytes_per_frame, remaining;
- uint32_t timestamp;
-};
-
-static int qt_rtp_parse_packet(AVFormatContext *s, PayloadContext *qt,
- AVStream *st, AVPacket *pkt,
- uint32_t *timestamp, const uint8_t *buf,
- int len, uint16_t seq, int flags)
-{
- AVIOContext pb;
- GetBitContext gb;
- int packing_scheme, has_payload_desc, has_packet_info, alen,
- has_marker_bit = flags & RTP_FLAG_MARKER;
-
- if (qt->remaining) {
- int num = qt->pkt.size / qt->bytes_per_frame;
-
- if (av_new_packet(pkt, qt->bytes_per_frame))
- return AVERROR(ENOMEM);
- pkt->stream_index = st->index;
- pkt->flags = qt->pkt.flags;
- memcpy(pkt->data,
- &qt->pkt.data[(num - qt->remaining) * qt->bytes_per_frame],
- qt->bytes_per_frame);
- if (--qt->remaining == 0) {
- av_freep(&qt->pkt.data);
- qt->pkt.size = 0;
- }
- return qt->remaining > 0;
- }
-
- /**
- * The RTP payload is described in:
- * http://developer.apple.com/quicktime/icefloe/dispatch026.html
- */
- init_get_bits(&gb, buf, len << 3);
- ffio_init_context(&pb, buf, len, 0, NULL, NULL, NULL, NULL);
-
- if (len < 4)
- return AVERROR_INVALIDDATA;
-
- skip_bits(&gb, 4); // version
- if ((packing_scheme = get_bits(&gb, 2)) == 0)
- return AVERROR_INVALIDDATA;
- if (get_bits1(&gb))
- flags |= RTP_FLAG_KEY;
- has_payload_desc = get_bits1(&gb);
- has_packet_info = get_bits1(&gb);
- skip_bits(&gb, 23); // reserved:7, cache payload info:1, payload ID:15
-
- if (has_payload_desc) {
- int data_len, pos, is_start, is_finish;
- uint32_t tag;
-
- pos = get_bits_count(&gb) >> 3;
- if (pos + 12 > len)
- return AVERROR_INVALIDDATA;
-
- skip_bits(&gb, 2); // has non-I frames:1, is sparse:1
- is_start = get_bits1(&gb);
- is_finish = get_bits1(&gb);
- if (!is_start || !is_finish) {
- avpriv_request_sample(s, "RTP-X-QT with payload description "
- "split over several packets");
- return AVERROR_PATCHWELCOME;
- }
- skip_bits(&gb, 12); // reserved
- data_len = get_bits(&gb, 16);
-
- avio_seek(&pb, pos + 4, SEEK_SET);
- tag = avio_rl32(&pb);
- if ((st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
- tag != MKTAG('v','i','d','e')) ||
- (st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
- tag != MKTAG('s','o','u','n')))
- return AVERROR_INVALIDDATA;
- avpriv_set_pts_info(st, 32, 1, avio_rb32(&pb));
-
- if (pos + data_len > len)
- return AVERROR_INVALIDDATA;
- /* TLVs */
- while (avio_tell(&pb) + 4 < pos + data_len) {
- int tlv_len = avio_rb16(&pb);
- tag = avio_rl16(&pb);
- if (avio_tell(&pb) + tlv_len > pos + data_len)
- return AVERROR_INVALIDDATA;
-
-#define MKTAG16(a,b) MKTAG(a,b,0,0)
- switch (tag) {
- case MKTAG16('s','d'): {
- MOVStreamContext *msc;
- void *priv_data = st->priv_data;
- int nb_streams = s->nb_streams;
- MOVContext *mc = av_mallocz(sizeof(*mc));
- if (!mc)
- return AVERROR(ENOMEM);
- mc->fc = s;
- st->priv_data = msc = av_mallocz(sizeof(MOVStreamContext));
- if (!msc) {
- av_free(mc);
- st->priv_data = priv_data;
- return AVERROR(ENOMEM);
- }
- /* ff_mov_read_stsd_entries updates stream s->nb_streams-1,
- * so set it temporarily to indicate which stream to update. */
- s->nb_streams = st->index + 1;
- ff_mov_read_stsd_entries(mc, &pb, 1);
- qt->bytes_per_frame = msc->bytes_per_frame;
- av_free(msc);
- av_free(mc);
- st->priv_data = priv_data;
- s->nb_streams = nb_streams;
- break;
- }
- default:
- avio_skip(&pb, tlv_len);
- break;
- }
- }
-
- /* 32-bit alignment */
- avio_skip(&pb, ((avio_tell(&pb) + 3) & ~3) - avio_tell(&pb));
- } else
- avio_seek(&pb, 4, SEEK_SET);
-
- if (has_packet_info) {
- avpriv_request_sample(s, "RTP-X-QT with packet-specific info");
- return AVERROR_PATCHWELCOME;
- }
-
- alen = len - avio_tell(&pb);
- if (alen <= 0)
- return AVERROR_INVALIDDATA;
-
- switch (packing_scheme) {
- case 3: /* one data packet spread over 1 or multiple RTP packets */
- if (qt->pkt.size > 0 && qt->timestamp == *timestamp) {
- qt->pkt.data = av_realloc(qt->pkt.data, qt->pkt.size + alen +
- FF_INPUT_BUFFER_PADDING_SIZE);
- } else {
- av_freep(&qt->pkt.data);
- av_init_packet(&qt->pkt);
- qt->pkt.data = av_malloc(alen + FF_INPUT_BUFFER_PADDING_SIZE);
- qt->pkt.size = 0;
- qt->timestamp = *timestamp;
- }
- if (!qt->pkt.data)
- return AVERROR(ENOMEM);
- memcpy(qt->pkt.data + qt->pkt.size, buf + avio_tell(&pb), alen);
- qt->pkt.size += alen;
- if (has_marker_bit) {
- int ret = av_packet_from_data(pkt, qt->pkt.data, qt->pkt.size);
- if (ret < 0)
- return ret;
-
- qt->pkt.size = 0;
- qt->pkt.data = NULL;
- pkt->flags = flags & RTP_FLAG_KEY ? AV_PKT_FLAG_KEY : 0;
- pkt->stream_index = st->index;
- memset(pkt->data + pkt->size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
- return 0;
- }
- return AVERROR(EAGAIN);
-
- case 1: /* constant packet size, multiple packets per RTP packet */
- if (qt->bytes_per_frame == 0 ||
- alen % qt->bytes_per_frame != 0)
- return AVERROR_INVALIDDATA; /* wrongly padded */
- qt->remaining = (alen / qt->bytes_per_frame) - 1;
- if (av_new_packet(pkt, qt->bytes_per_frame))
- return AVERROR(ENOMEM);
- memcpy(pkt->data, buf + avio_tell(&pb), qt->bytes_per_frame);
- pkt->flags = flags & RTP_FLAG_KEY ? AV_PKT_FLAG_KEY : 0;
- pkt->stream_index = st->index;
- if (qt->remaining > 0) {
- av_freep(&qt->pkt.data);
- qt->pkt.data = av_malloc(qt->remaining * qt->bytes_per_frame);
- if (!qt->pkt.data) {
- av_free_packet(pkt);
- return AVERROR(ENOMEM);
- }
- qt->pkt.size = qt->remaining * qt->bytes_per_frame;
- memcpy(qt->pkt.data,
- buf + avio_tell(&pb) + qt->bytes_per_frame,
- qt->remaining * qt->bytes_per_frame);
- qt->pkt.flags = pkt->flags;
- return 1;
- }
- return 0;
-
- default: /* unimplemented */
- avpriv_request_sample(NULL, "RTP-X-QT with packing scheme 2");
- return AVERROR_PATCHWELCOME;
- }
-}
-
-static PayloadContext *qt_rtp_new(void)
-{
- return av_mallocz(sizeof(PayloadContext));
-}
-
-static void qt_rtp_free(PayloadContext *qt)
-{
- av_freep(&qt->pkt.data);
- av_free(qt);
-}
-
-#define RTP_QT_HANDLER(m, n, s, t) \
-RTPDynamicProtocolHandler ff_ ## m ## _rtp_ ## n ## _handler = { \
- .enc_name = s, \
- .codec_type = t, \
- .codec_id = AV_CODEC_ID_NONE, \
- .alloc = qt_rtp_new, \
- .free = qt_rtp_free, \
- .parse_packet = qt_rtp_parse_packet, \
-}
-
-RTP_QT_HANDLER(qt, vid, "X-QT", AVMEDIA_TYPE_VIDEO);
-RTP_QT_HANDLER(qt, aud, "X-QT", AVMEDIA_TYPE_AUDIO);
-RTP_QT_HANDLER(quicktime, vid, "X-QUICKTIME", AVMEDIA_TYPE_VIDEO);
-RTP_QT_HANDLER(quicktime, aud, "X-QUICKTIME", AVMEDIA_TYPE_AUDIO);
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