chasing indexing error

1 files changed, 0 insertions, 238 deletions

diff --git a/ffmpeg/libavformat/sapdec.c b/ffmpeg/libavformat/sapdec.c
deleted file mode 100644
index fe7bd82..0000000
--- a/ffmpeg/libavformat/sapdec.c
+++ /dev/null
@@ -1,238 +0,0 @@
-/*
- * Session Announcement Protocol (RFC 2974) demuxer
- * Copyright (c) 2010 Martin Storsjo
- *
- * 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
- */
-
-#include "avformat.h"
-#include "libavutil/avstring.h"
-#include "libavutil/intreadwrite.h"
-#include "network.h"
-#include "os_support.h"
-#include "internal.h"
-#include "avio_internal.h"
-#include "url.h"
-#include "rtpdec.h"
-#if HAVE_POLL_H
-#include <poll.h>
-#endif
-
-struct SAPState {
-    URLContext *ann_fd;
-    AVFormatContext *sdp_ctx;
-    AVIOContext sdp_pb;
-    uint16_t hash;
-    char *sdp;
-    int eof;
-};
-
-static int sap_probe(AVProbeData *p)
-{
-    if (av_strstart(p->filename, "sap:", NULL))
-        return AVPROBE_SCORE_MAX;
-    return 0;
-}
-
-static int sap_read_close(AVFormatContext *s)
-{
-    struct SAPState *sap = s->priv_data;
-    if (sap->sdp_ctx)
-        avformat_close_input(&sap->sdp_ctx);
-    if (sap->ann_fd)
-        ffurl_close(sap->ann_fd);
-    av_freep(&sap->sdp);
-    ff_network_close();
-    return 0;
-}
-
-static int sap_read_header(AVFormatContext *s)
-{
-    struct SAPState *sap = s->priv_data;
-    char host[1024], path[1024], url[1024];
-    uint8_t recvbuf[RTP_MAX_PACKET_LENGTH];
-    int port;
-    int ret, i;
-    AVInputFormat* infmt;
-
-    if (!ff_network_init())
-        return AVERROR(EIO);
-
-    av_url_split(NULL, 0, NULL, 0, host, sizeof(host), &port,
-                 path, sizeof(path), s->filename);
-    if (port < 0)
-        port = 9875;
-
-    if (!host[0]) {
-        /* Listen for announcements on sap.mcast.net if no host was specified */
-        av_strlcpy(host, "224.2.127.254", sizeof(host));
-    }
-
-    ff_url_join(url, sizeof(url), "udp", NULL, host, port, "?localport=%d",
-                port);
-    ret = ffurl_open(&sap->ann_fd, url, AVIO_FLAG_READ,
-                     &s->interrupt_callback, NULL);
-    if (ret)
-        goto fail;
-
-    while (1) {
-        int addr_type, auth_len;
-        int pos;
-
-        ret = ffurl_read(sap->ann_fd, recvbuf, sizeof(recvbuf) - 1);
-        if (ret == AVERROR(EAGAIN))
-            continue;
-        if (ret < 0)
-            goto fail;
-        recvbuf[ret] = '\0'; /* Null terminate for easier parsing */
-        if (ret < 8) {
-            av_log(s, AV_LOG_WARNING, "Received too short packet\n");
-            continue;
-        }
-
-        if ((recvbuf[0] & 0xe0) != 0x20) {
-            av_log(s, AV_LOG_WARNING, "Unsupported SAP version packet "
-                                      "received\n");
-            continue;
-        }
-
-        if (recvbuf[0] & 0x04) {
-            av_log(s, AV_LOG_WARNING, "Received stream deletion "
-                                      "announcement\n");
-            continue;
-        }
-        addr_type = recvbuf[0] & 0x10;
-        auth_len  = recvbuf[1];
-        sap->hash = AV_RB16(&recvbuf[2]);
-        pos = 4;
-        if (addr_type)
-            pos += 16; /* IPv6 */
-        else
-            pos += 4; /* IPv4 */
-        pos += auth_len * 4;
-        if (pos + 4 >= ret) {
-            av_log(s, AV_LOG_WARNING, "Received too short packet\n");
-            continue;
-        }
-#define MIME "application/sdp"
-        if (strcmp(&recvbuf[pos], MIME) == 0) {
-            pos += strlen(MIME) + 1;
-        } else if (strncmp(&recvbuf[pos], "v=0\r\n", 5) == 0) {
-            // Direct SDP without a mime type
-        } else {
-            av_log(s, AV_LOG_WARNING, "Unsupported mime type %s\n",
-                                      &recvbuf[pos]);
-            continue;
-        }
-
-        sap->sdp = av_strdup(&recvbuf[pos]);
-        break;
-    }
-
-    av_log(s, AV_LOG_VERBOSE, "SDP:\n%s\n", sap->sdp);
-    ffio_init_context(&sap->sdp_pb, sap->sdp, strlen(sap->sdp), 0, NULL, NULL,
-                  NULL, NULL);
-
-    infmt = av_find_input_format("sdp");
-    if (!infmt)
-        goto fail;
-    sap->sdp_ctx = avformat_alloc_context();
-    if (!sap->sdp_ctx) {
-        ret = AVERROR(ENOMEM);
-        goto fail;
-    }
-    sap->sdp_ctx->max_delay = s->max_delay;
-    sap->sdp_ctx->pb        = &sap->sdp_pb;
-    sap->sdp_ctx->interrupt_callback = s->interrupt_callback;
-    ret = avformat_open_input(&sap->sdp_ctx, "temp.sdp", infmt, NULL);
-    if (ret < 0)
-        goto fail;
-    if (sap->sdp_ctx->ctx_flags & AVFMTCTX_NOHEADER)
-        s->ctx_flags |= AVFMTCTX_NOHEADER;
-    for (i = 0; i < sap->sdp_ctx->nb_streams; i++) {
-        AVStream *st = avformat_new_stream(s, NULL);
-        if (!st) {
-            ret = AVERROR(ENOMEM);
-            goto fail;
-        }
-        st->id = i;
-        avcodec_copy_context(st->codec, sap->sdp_ctx->streams[i]->codec);
-        st->time_base = sap->sdp_ctx->streams[i]->time_base;
-    }
-
-    return 0;
-
-fail:
-    sap_read_close(s);
-    return ret;
-}
-
-static int sap_fetch_packet(AVFormatContext *s, AVPacket *pkt)
-{
-    struct SAPState *sap = s->priv_data;
-    int fd = ffurl_get_file_handle(sap->ann_fd);
-    int n, ret;
-    struct pollfd p = {fd, POLLIN, 0};
-    uint8_t recvbuf[RTP_MAX_PACKET_LENGTH];
-
-    if (sap->eof)
-        return AVERROR_EOF;
-
-    while (1) {
-        n = poll(&p, 1, 0);
-        if (n <= 0 || !(p.revents & POLLIN))
-            break;
-        ret = ffurl_read(sap->ann_fd, recvbuf, sizeof(recvbuf));
-        if (ret >= 8) {
-            uint16_t hash = AV_RB16(&recvbuf[2]);
-            /* Should ideally check the source IP address, too */
-            if (recvbuf[0] & 0x04 && hash == sap->hash) {
-                /* Stream deletion */
-                sap->eof = 1;
-                return AVERROR_EOF;
-            }
-        }
-    }
-    ret = av_read_frame(sap->sdp_ctx, pkt);
-    if (ret < 0)
-        return ret;
-    if (s->ctx_flags & AVFMTCTX_NOHEADER) {
-        while (sap->sdp_ctx->nb_streams > s->nb_streams) {
-            int i = s->nb_streams;
-            AVStream *st = avformat_new_stream(s, NULL);
-            if (!st) {
-                av_free_packet(pkt);
-                return AVERROR(ENOMEM);
-            }
-            st->id = i;
-            avcodec_copy_context(st->codec, sap->sdp_ctx->streams[i]->codec);
-            st->time_base = sap->sdp_ctx->streams[i]->time_base;
-        }
-    }
-    return ret;
-}
-
-AVInputFormat ff_sap_demuxer = {
-    .name           = "sap",
-    .long_name      = NULL_IF_CONFIG_SMALL("SAP input"),
-    .priv_data_size = sizeof(struct SAPState),
-    .read_probe     = sap_probe,
-    .read_header    = sap_read_header,
-    .read_packet    = sap_fetch_packet,
-    .read_close     = sap_read_close,
-    .flags          = AVFMT_NOFILE,
-};