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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 4349 | Serge | 1 | /* |
| 2 | * RTMP input format |
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| 3 | * Copyright (c) 2009 Konstantin Shishkov |
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| 4 | * |
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| 5 | * This file is part of FFmpeg. |
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| 6 | * |
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| 7 | * FFmpeg is free software; you can redistribute it and/or |
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| 8 | * modify it under the terms of the GNU Lesser General Public |
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| 9 | * License as published by the Free Software Foundation; either |
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| 10 | * version 2.1 of the License, or (at your option) any later version. |
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| 11 | * |
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| 12 | * FFmpeg is distributed in the hope that it will be useful, |
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| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 15 | * Lesser General Public License for more details. |
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| 16 | * |
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| 17 | * You should have received a copy of the GNU Lesser General Public |
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| 18 | * License along with FFmpeg; if not, write to the Free Software |
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| 19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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| 20 | */ |
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| 21 | |||
| 22 | #include "libavcodec/bytestream.h" |
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| 23 | #include "libavutil/avstring.h" |
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| 24 | #include "libavutil/intfloat.h" |
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| 25 | #include "avformat.h" |
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| 26 | |||
| 27 | #include "rtmppkt.h" |
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| 28 | #include "flv.h" |
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| 29 | #include "url.h" |
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| 30 | |||
| 31 | void ff_amf_write_bool(uint8_t **dst, int val) |
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| 32 | { |
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| 33 | bytestream_put_byte(dst, AMF_DATA_TYPE_BOOL); |
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| 34 | bytestream_put_byte(dst, val); |
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| 35 | } |
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| 36 | |||
| 37 | void ff_amf_write_number(uint8_t **dst, double val) |
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| 38 | { |
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| 39 | bytestream_put_byte(dst, AMF_DATA_TYPE_NUMBER); |
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| 40 | bytestream_put_be64(dst, av_double2int(val)); |
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| 41 | } |
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| 42 | |||
| 43 | void ff_amf_write_string(uint8_t **dst, const char *str) |
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| 44 | { |
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| 45 | bytestream_put_byte(dst, AMF_DATA_TYPE_STRING); |
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| 46 | bytestream_put_be16(dst, strlen(str)); |
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| 47 | bytestream_put_buffer(dst, str, strlen(str)); |
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| 48 | } |
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| 49 | |||
| 50 | void ff_amf_write_string2(uint8_t **dst, const char *str1, const char *str2) |
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| 51 | { |
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| 52 | int len1 = 0, len2 = 0; |
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| 53 | if (str1) |
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| 54 | len1 = strlen(str1); |
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| 55 | if (str2) |
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| 56 | len2 = strlen(str2); |
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| 57 | bytestream_put_byte(dst, AMF_DATA_TYPE_STRING); |
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| 58 | bytestream_put_be16(dst, len1 + len2); |
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| 59 | bytestream_put_buffer(dst, str1, len1); |
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| 60 | bytestream_put_buffer(dst, str2, len2); |
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| 61 | } |
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| 62 | |||
| 63 | void ff_amf_write_null(uint8_t **dst) |
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| 64 | { |
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| 65 | bytestream_put_byte(dst, AMF_DATA_TYPE_NULL); |
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| 66 | } |
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| 67 | |||
| 68 | void ff_amf_write_object_start(uint8_t **dst) |
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| 69 | { |
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| 70 | bytestream_put_byte(dst, AMF_DATA_TYPE_OBJECT); |
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| 71 | } |
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| 72 | |||
| 73 | void ff_amf_write_field_name(uint8_t **dst, const char *str) |
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| 74 | { |
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| 75 | bytestream_put_be16(dst, strlen(str)); |
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| 76 | bytestream_put_buffer(dst, str, strlen(str)); |
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| 77 | } |
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| 78 | |||
| 79 | void ff_amf_write_object_end(uint8_t **dst) |
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| 80 | { |
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| 81 | /* first two bytes are field name length = 0, |
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| 82 | * AMF object should end with it and end marker |
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| 83 | */ |
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| 84 | bytestream_put_be24(dst, AMF_DATA_TYPE_OBJECT_END); |
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| 85 | } |
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| 86 | |||
| 87 | int ff_amf_read_bool(GetByteContext *bc, int *val) |
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| 88 | { |
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| 89 | if (bytestream2_get_byte(bc) != AMF_DATA_TYPE_BOOL) |
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| 90 | return AVERROR_INVALIDDATA; |
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| 91 | *val = bytestream2_get_byte(bc); |
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| 92 | return 0; |
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| 93 | } |
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| 94 | |||
| 95 | int ff_amf_read_number(GetByteContext *bc, double *val) |
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| 96 | { |
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| 97 | uint64_t read; |
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| 98 | if (bytestream2_get_byte(bc) != AMF_DATA_TYPE_NUMBER) |
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| 99 | return AVERROR_INVALIDDATA; |
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| 100 | read = bytestream2_get_be64(bc); |
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| 101 | *val = av_int2double(read); |
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| 102 | return 0; |
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| 103 | } |
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| 104 | |||
| 105 | int ff_amf_read_string(GetByteContext *bc, uint8_t *str, |
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| 106 | int strsize, int *length) |
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| 107 | { |
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| 108 | int stringlen = 0; |
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| 109 | int readsize; |
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| 110 | if (bytestream2_get_byte(bc) != AMF_DATA_TYPE_STRING) |
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| 111 | return AVERROR_INVALIDDATA; |
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| 112 | stringlen = bytestream2_get_be16(bc); |
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| 113 | if (stringlen + 1 > strsize) |
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| 114 | return AVERROR(EINVAL); |
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| 115 | readsize = bytestream2_get_buffer(bc, str, stringlen); |
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| 116 | if (readsize != stringlen) { |
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| 117 | av_log(NULL, AV_LOG_WARNING, |
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| 118 | "Unable to read as many bytes as AMF string signaled\n"); |
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| 119 | } |
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| 120 | str[readsize] = '\0'; |
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| 121 | *length = FFMIN(stringlen, readsize); |
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| 122 | return 0; |
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| 123 | } |
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| 124 | |||
| 125 | int ff_amf_read_null(GetByteContext *bc) |
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| 126 | { |
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| 127 | if (bytestream2_get_byte(bc) != AMF_DATA_TYPE_NULL) |
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| 128 | return AVERROR_INVALIDDATA; |
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| 129 | return 0; |
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| 130 | } |
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| 131 | |||
| 132 | int ff_rtmp_check_alloc_array(RTMPPacket **prev_pkt, int *nb_prev_pkt, |
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| 133 | int channel) |
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| 134 | { |
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| 135 | int nb_alloc; |
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| 136 | RTMPPacket *ptr; |
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| 137 | if (channel < *nb_prev_pkt) |
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| 138 | return 0; |
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| 139 | |||
| 140 | nb_alloc = channel + 16; |
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| 141 | // This can't use the av_reallocp family of functions, since we |
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| 142 | // would need to free each element in the array before the array |
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| 143 | // itself is freed. |
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| 144 | ptr = av_realloc_array(*prev_pkt, nb_alloc, sizeof(**prev_pkt)); |
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| 145 | if (!ptr) |
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| 146 | return AVERROR(ENOMEM); |
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| 147 | memset(ptr + *nb_prev_pkt, 0, (nb_alloc - *nb_prev_pkt) * sizeof(*ptr)); |
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| 148 | *prev_pkt = ptr; |
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| 149 | *nb_prev_pkt = nb_alloc; |
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| 150 | return 0; |
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| 151 | } |
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| 152 | |||
| 153 | int ff_rtmp_packet_read(URLContext *h, RTMPPacket *p, |
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| 154 | int chunk_size, RTMPPacket **prev_pkt, int *nb_prev_pkt) |
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| 155 | { |
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| 156 | uint8_t hdr; |
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| 157 | |||
| 158 | if (ffurl_read(h, &hdr, 1) != 1) |
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| 159 | return AVERROR(EIO); |
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| 160 | |||
| 161 | return ff_rtmp_packet_read_internal(h, p, chunk_size, prev_pkt, |
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| 162 | nb_prev_pkt, hdr); |
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| 163 | } |
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| 164 | |||
| 165 | static int rtmp_packet_read_one_chunk(URLContext *h, RTMPPacket *p, |
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| 166 | int chunk_size, RTMPPacket **prev_pkt_ptr, |
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| 167 | int *nb_prev_pkt, uint8_t hdr) |
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| 168 | { |
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| 169 | |||
| 170 | uint8_t buf[16]; |
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| 171 | int channel_id, timestamp, size; |
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| 172 | uint32_t extra = 0; |
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| 173 | enum RTMPPacketType type; |
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| 174 | int written = 0; |
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| 175 | int ret, toread; |
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| 176 | RTMPPacket *prev_pkt; |
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| 177 | |||
| 178 | written++; |
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| 179 | channel_id = hdr & 0x3F; |
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| 180 | |||
| 181 | if (channel_id < 2) { //special case for channel number >= 64 |
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| 182 | buf[1] = 0; |
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| 183 | if (ffurl_read_complete(h, buf, channel_id + 1) != channel_id + 1) |
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| 184 | return AVERROR(EIO); |
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| 185 | written += channel_id + 1; |
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| 186 | channel_id = AV_RL16(buf) + 64; |
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| 187 | } |
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| 188 | if ((ret = ff_rtmp_check_alloc_array(prev_pkt_ptr, nb_prev_pkt, |
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| 189 | channel_id)) < 0) |
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| 190 | return ret; |
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| 191 | prev_pkt = *prev_pkt_ptr; |
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| 192 | size = prev_pkt[channel_id].size; |
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| 193 | type = prev_pkt[channel_id].type; |
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| 194 | extra = prev_pkt[channel_id].extra; |
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| 195 | |||
| 196 | hdr >>= 6; |
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| 197 | if (hdr == RTMP_PS_ONEBYTE) { |
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| 198 | timestamp = prev_pkt[channel_id].ts_delta; |
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| 199 | } else { |
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| 200 | if (ffurl_read_complete(h, buf, 3) != 3) |
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| 201 | return AVERROR(EIO); |
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| 202 | written += 3; |
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| 203 | timestamp = AV_RB24(buf); |
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| 204 | if (hdr != RTMP_PS_FOURBYTES) { |
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| 205 | if (ffurl_read_complete(h, buf, 3) != 3) |
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| 206 | return AVERROR(EIO); |
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| 207 | written += 3; |
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| 208 | size = AV_RB24(buf); |
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| 209 | if (ffurl_read_complete(h, buf, 1) != 1) |
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| 210 | return AVERROR(EIO); |
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| 211 | written++; |
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| 212 | type = buf[0]; |
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| 213 | if (hdr == RTMP_PS_TWELVEBYTES) { |
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| 214 | if (ffurl_read_complete(h, buf, 4) != 4) |
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| 215 | return AVERROR(EIO); |
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| 216 | written += 4; |
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| 217 | extra = AV_RL32(buf); |
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| 218 | } |
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| 219 | } |
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| 220 | if (timestamp == 0xFFFFFF) { |
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| 221 | if (ffurl_read_complete(h, buf, 4) != 4) |
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| 222 | return AVERROR(EIO); |
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| 223 | timestamp = AV_RB32(buf); |
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| 224 | } |
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| 225 | } |
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| 226 | if (hdr != RTMP_PS_TWELVEBYTES) |
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| 227 | timestamp += prev_pkt[channel_id].timestamp; |
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| 228 | |||
| 229 | if (!prev_pkt[channel_id].read) { |
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| 230 | if ((ret = ff_rtmp_packet_create(p, channel_id, type, timestamp, |
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| 231 | size)) < 0) |
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| 232 | return ret; |
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| 233 | p->read = written; |
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| 234 | p->offset = 0; |
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| 235 | prev_pkt[channel_id].ts_delta = timestamp - |
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| 236 | prev_pkt[channel_id].timestamp; |
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| 237 | prev_pkt[channel_id].timestamp = timestamp; |
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| 238 | } else { |
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| 239 | // previous packet in this channel hasn't completed reading |
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| 240 | RTMPPacket *prev = &prev_pkt[channel_id]; |
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| 241 | p->data = prev->data; |
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| 242 | p->size = prev->size; |
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| 243 | p->channel_id = prev->channel_id; |
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| 244 | p->type = prev->type; |
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| 245 | p->ts_delta = prev->ts_delta; |
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| 246 | p->extra = prev->extra; |
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| 247 | p->offset = prev->offset; |
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| 248 | p->read = prev->read + written; |
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| 249 | p->timestamp = prev->timestamp; |
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| 250 | prev->data = NULL; |
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| 251 | } |
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| 252 | p->extra = extra; |
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| 253 | // save history |
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| 254 | prev_pkt[channel_id].channel_id = channel_id; |
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| 255 | prev_pkt[channel_id].type = type; |
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| 256 | prev_pkt[channel_id].size = size; |
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| 257 | prev_pkt[channel_id].extra = extra; |
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| 258 | size = size - p->offset; |
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| 259 | |||
| 260 | toread = FFMIN(size, chunk_size); |
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| 261 | if (ffurl_read_complete(h, p->data + p->offset, toread) != toread) { |
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| 262 | ff_rtmp_packet_destroy(p); |
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| 263 | return AVERROR(EIO); |
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| 264 | } |
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| 265 | size -= toread; |
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| 266 | p->read += toread; |
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| 267 | p->offset += toread; |
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| 268 | |||
| 269 | if (size > 0) { |
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| 270 | RTMPPacket *prev = &prev_pkt[channel_id]; |
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| 271 | prev->data = p->data; |
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| 272 | prev->read = p->read; |
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| 273 | prev->offset = p->offset; |
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| 274 | return AVERROR(EAGAIN); |
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| 275 | } |
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| 276 | |||
| 277 | prev_pkt[channel_id].read = 0; // read complete; reset if needed |
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| 278 | return p->read; |
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| 279 | } |
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| 280 | |||
| 281 | int ff_rtmp_packet_read_internal(URLContext *h, RTMPPacket *p, int chunk_size, |
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| 282 | RTMPPacket **prev_pkt, int *nb_prev_pkt, |
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| 283 | uint8_t hdr) |
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| 284 | { |
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| 285 | while (1) { |
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| 286 | int ret = rtmp_packet_read_one_chunk(h, p, chunk_size, prev_pkt, |
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| 287 | nb_prev_pkt, hdr); |
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| 288 | if (ret > 0 || ret != AVERROR(EAGAIN)) |
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| 289 | return ret; |
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| 290 | |||
| 291 | if (ffurl_read(h, &hdr, 1) != 1) |
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| 292 | return AVERROR(EIO); |
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| 293 | } |
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| 294 | } |
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| 295 | |||
| 296 | int ff_rtmp_packet_write(URLContext *h, RTMPPacket *pkt, |
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| 297 | int chunk_size, RTMPPacket **prev_pkt_ptr, |
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| 298 | int *nb_prev_pkt) |
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| 299 | { |
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| 300 | uint8_t pkt_hdr[16], *p = pkt_hdr; |
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| 301 | int mode = RTMP_PS_TWELVEBYTES; |
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| 302 | int off = 0; |
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| 303 | int written = 0; |
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| 304 | int ret; |
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| 305 | RTMPPacket *prev_pkt; |
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| 306 | |||
| 307 | if ((ret = ff_rtmp_check_alloc_array(prev_pkt_ptr, nb_prev_pkt, |
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| 308 | pkt->channel_id)) < 0) |
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| 309 | return ret; |
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| 310 | prev_pkt = *prev_pkt_ptr; |
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| 311 | |||
| 312 | pkt->ts_delta = pkt->timestamp - prev_pkt[pkt->channel_id].timestamp; |
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| 313 | |||
| 314 | //if channel_id = 0, this is first presentation of prev_pkt, send full hdr. |
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| 315 | if (prev_pkt[pkt->channel_id].channel_id && |
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| 316 | pkt->extra == prev_pkt[pkt->channel_id].extra) { |
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| 317 | if (pkt->type == prev_pkt[pkt->channel_id].type && |
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| 318 | pkt->size == prev_pkt[pkt->channel_id].size) { |
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| 319 | mode = RTMP_PS_FOURBYTES; |
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| 320 | if (pkt->ts_delta == prev_pkt[pkt->channel_id].ts_delta) |
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| 321 | mode = RTMP_PS_ONEBYTE; |
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| 322 | } else { |
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| 323 | mode = RTMP_PS_EIGHTBYTES; |
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| 324 | } |
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| 325 | } |
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| 326 | |||
| 327 | if (pkt->channel_id < 64) { |
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| 328 | bytestream_put_byte(&p, pkt->channel_id | (mode << 6)); |
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| 329 | } else if (pkt->channel_id < 64 + 256) { |
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| 330 | bytestream_put_byte(&p, 0 | (mode << 6)); |
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| 331 | bytestream_put_byte(&p, pkt->channel_id - 64); |
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| 332 | } else { |
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| 333 | bytestream_put_byte(&p, 1 | (mode << 6)); |
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| 334 | bytestream_put_le16(&p, pkt->channel_id - 64); |
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| 335 | } |
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| 336 | if (mode != RTMP_PS_ONEBYTE) { |
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| 337 | uint32_t timestamp = pkt->timestamp; |
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| 338 | if (mode != RTMP_PS_TWELVEBYTES) |
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| 339 | timestamp = pkt->ts_delta; |
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| 340 | bytestream_put_be24(&p, timestamp >= 0xFFFFFF ? 0xFFFFFF : timestamp); |
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| 341 | if (mode != RTMP_PS_FOURBYTES) { |
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| 342 | bytestream_put_be24(&p, pkt->size); |
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| 343 | bytestream_put_byte(&p, pkt->type); |
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| 344 | if (mode == RTMP_PS_TWELVEBYTES) |
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| 345 | bytestream_put_le32(&p, pkt->extra); |
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| 346 | } |
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| 347 | if (timestamp >= 0xFFFFFF) |
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| 348 | bytestream_put_be32(&p, timestamp); |
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| 349 | } |
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| 350 | // save history |
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| 351 | prev_pkt[pkt->channel_id].channel_id = pkt->channel_id; |
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| 352 | prev_pkt[pkt->channel_id].type = pkt->type; |
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| 353 | prev_pkt[pkt->channel_id].size = pkt->size; |
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| 354 | prev_pkt[pkt->channel_id].timestamp = pkt->timestamp; |
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| 355 | if (mode != RTMP_PS_TWELVEBYTES) { |
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| 356 | prev_pkt[pkt->channel_id].ts_delta = pkt->ts_delta; |
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| 357 | } else { |
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| 358 | prev_pkt[pkt->channel_id].ts_delta = pkt->timestamp; |
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| 359 | } |
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| 360 | prev_pkt[pkt->channel_id].extra = pkt->extra; |
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| 361 | |||
| 362 | if ((ret = ffurl_write(h, pkt_hdr, p - pkt_hdr)) < 0) |
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| 363 | return ret; |
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| 364 | written = p - pkt_hdr + pkt->size; |
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| 365 | while (off < pkt->size) { |
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| 366 | int towrite = FFMIN(chunk_size, pkt->size - off); |
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| 367 | if ((ret = ffurl_write(h, pkt->data + off, towrite)) < 0) |
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| 368 | return ret; |
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| 369 | off += towrite; |
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| 370 | if (off < pkt->size) { |
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| 371 | uint8_t marker = 0xC0 | pkt->channel_id; |
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| 372 | if ((ret = ffurl_write(h, &marker, 1)) < 0) |
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| 373 | return ret; |
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| 374 | written++; |
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| 375 | } |
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| 376 | } |
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| 377 | return written; |
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| 378 | } |
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| 379 | |||
| 380 | int ff_rtmp_packet_create(RTMPPacket *pkt, int channel_id, RTMPPacketType type, |
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| 381 | int timestamp, int size) |
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| 382 | { |
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| 383 | if (size) { |
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| 384 | pkt->data = av_malloc(size); |
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| 385 | if (!pkt->data) |
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| 386 | return AVERROR(ENOMEM); |
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| 387 | } |
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| 388 | pkt->size = size; |
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| 389 | pkt->channel_id = channel_id; |
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| 390 | pkt->type = type; |
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| 391 | pkt->timestamp = timestamp; |
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| 392 | pkt->extra = 0; |
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| 393 | pkt->ts_delta = 0; |
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| 394 | |||
| 395 | return 0; |
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| 396 | } |
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| 397 | |||
| 398 | void ff_rtmp_packet_destroy(RTMPPacket *pkt) |
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| 399 | { |
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| 400 | if (!pkt) |
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| 401 | return; |
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| 402 | av_freep(&pkt->data); |
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| 403 | pkt->size = 0; |
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| 404 | } |
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| 405 | |||
| 406 | int ff_amf_tag_size(const uint8_t *data, const uint8_t *data_end) |
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| 407 | { |
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| 408 | const uint8_t *base = data; |
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| 409 | AMFDataType type; |
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| 410 | unsigned nb = -1; |
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| 411 | int parse_key = 1; |
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| 412 | |||
| 413 | if (data >= data_end) |
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| 414 | return -1; |
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| 415 | switch ((type = *data++)) { |
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| 416 | case AMF_DATA_TYPE_NUMBER: return 9; |
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| 417 | case AMF_DATA_TYPE_BOOL: return 2; |
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| 418 | case AMF_DATA_TYPE_STRING: return 3 + AV_RB16(data); |
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| 419 | case AMF_DATA_TYPE_LONG_STRING: return 5 + AV_RB32(data); |
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| 420 | case AMF_DATA_TYPE_NULL: return 1; |
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| 421 | case AMF_DATA_TYPE_ARRAY: |
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| 422 | parse_key = 0; |
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| 423 | case AMF_DATA_TYPE_MIXEDARRAY: |
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| 424 | nb = bytestream_get_be32(&data); |
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| 425 | case AMF_DATA_TYPE_OBJECT: |
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| 426 | while (nb-- > 0 || type != AMF_DATA_TYPE_ARRAY) { |
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| 427 | int t; |
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| 428 | if (parse_key) { |
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| 429 | int size = bytestream_get_be16(&data); |
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| 430 | if (!size) { |
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| 431 | data++; |
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| 432 | break; |
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| 433 | } |
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| 434 | if (size < 0 || size >= data_end - data) |
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| 435 | return -1; |
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| 436 | data += size; |
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| 437 | } |
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| 438 | t = ff_amf_tag_size(data, data_end); |
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| 439 | if (t < 0 || t >= data_end - data) |
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| 440 | return -1; |
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| 441 | data += t; |
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| 442 | } |
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| 443 | return data - base; |
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| 444 | case AMF_DATA_TYPE_OBJECT_END: return 1; |
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| 445 | default: return -1; |
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| 446 | } |
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| 447 | } |
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| 448 | |||
| 449 | int ff_amf_get_field_value(const uint8_t *data, const uint8_t *data_end, |
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| 450 | const uint8_t *name, uint8_t *dst, int dst_size) |
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| 451 | { |
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| 452 | int namelen = strlen(name); |
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| 453 | int len; |
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| 454 | |||
| 455 | while (*data != AMF_DATA_TYPE_OBJECT && data < data_end) { |
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| 456 | len = ff_amf_tag_size(data, data_end); |
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| 457 | if (len < 0) |
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| 458 | len = data_end - data; |
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| 459 | data += len; |
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| 460 | } |
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| 461 | if (data_end - data < 3) |
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| 462 | return -1; |
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| 463 | data++; |
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| 464 | for (;;) { |
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| 465 | int size = bytestream_get_be16(&data); |
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| 466 | if (!size) |
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| 467 | break; |
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| 468 | if (size < 0 || size >= data_end - data) |
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| 469 | return -1; |
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| 470 | data += size; |
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| 471 | if (size == namelen && !memcmp(data-size, name, namelen)) { |
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| 472 | switch (*data++) { |
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| 473 | case AMF_DATA_TYPE_NUMBER: |
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| 474 | snprintf(dst, dst_size, "%g", av_int2double(AV_RB64(data))); |
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| 475 | break; |
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| 476 | case AMF_DATA_TYPE_BOOL: |
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| 477 | snprintf(dst, dst_size, "%s", *data ? "true" : "false"); |
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| 478 | break; |
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| 479 | case AMF_DATA_TYPE_STRING: |
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| 480 | len = bytestream_get_be16(&data); |
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| 481 | av_strlcpy(dst, data, FFMIN(len+1, dst_size)); |
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| 482 | break; |
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| 483 | default: |
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| 484 | return -1; |
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| 485 | } |
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| 486 | return 0; |
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| 487 | } |
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| 488 | len = ff_amf_tag_size(data, data_end); |
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| 489 | if (len < 0 || len >= data_end - data) |
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| 490 | return -1; |
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| 491 | data += len; |
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| 492 | } |
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| 493 | return -1; |
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| 494 | } |
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| 495 | |||
| 496 | static const char* rtmp_packet_type(int type) |
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| 497 | { |
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| 498 | switch (type) { |
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| 499 | case RTMP_PT_CHUNK_SIZE: return "chunk size"; |
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| 500 | case RTMP_PT_BYTES_READ: return "bytes read"; |
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| 501 | case RTMP_PT_PING: return "ping"; |
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| 502 | case RTMP_PT_SERVER_BW: return "server bandwidth"; |
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| 503 | case RTMP_PT_CLIENT_BW: return "client bandwidth"; |
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| 504 | case RTMP_PT_AUDIO: return "audio packet"; |
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| 505 | case RTMP_PT_VIDEO: return "video packet"; |
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| 506 | case RTMP_PT_FLEX_STREAM: return "Flex shared stream"; |
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| 507 | case RTMP_PT_FLEX_OBJECT: return "Flex shared object"; |
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| 508 | case RTMP_PT_FLEX_MESSAGE: return "Flex shared message"; |
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| 509 | case RTMP_PT_NOTIFY: return "notification"; |
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| 510 | case RTMP_PT_SHARED_OBJ: return "shared object"; |
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| 511 | case RTMP_PT_INVOKE: return "invoke"; |
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| 512 | case RTMP_PT_METADATA: return "metadata"; |
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| 513 | default: return "unknown"; |
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| 514 | } |
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| 515 | } |
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| 516 | |||
| 517 | static void amf_tag_contents(void *ctx, const uint8_t *data, |
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| 518 | const uint8_t *data_end) |
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| 519 | { |
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| 520 | unsigned int size, nb = -1; |
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| 521 | char buf[1024]; |
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| 522 | AMFDataType type; |
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| 523 | int parse_key = 1; |
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| 524 | |||
| 525 | if (data >= data_end) |
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| 526 | return; |
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| 527 | switch ((type = *data++)) { |
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| 528 | case AMF_DATA_TYPE_NUMBER: |
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| 529 | av_log(ctx, AV_LOG_DEBUG, " number %g\n", av_int2double(AV_RB64(data))); |
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| 530 | return; |
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| 531 | case AMF_DATA_TYPE_BOOL: |
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| 532 | av_log(ctx, AV_LOG_DEBUG, " bool %d\n", *data); |
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| 533 | return; |
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| 534 | case AMF_DATA_TYPE_STRING: |
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| 535 | case AMF_DATA_TYPE_LONG_STRING: |
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| 536 | if (type == AMF_DATA_TYPE_STRING) { |
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| 537 | size = bytestream_get_be16(&data); |
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| 538 | } else { |
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| 539 | size = bytestream_get_be32(&data); |
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| 540 | } |
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| 541 | size = FFMIN(size, sizeof(buf) - 1); |
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| 542 | memcpy(buf, data, size); |
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| 543 | buf[size] = 0; |
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| 544 | av_log(ctx, AV_LOG_DEBUG, " string '%s'\n", buf); |
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| 545 | return; |
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| 546 | case AMF_DATA_TYPE_NULL: |
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| 547 | av_log(ctx, AV_LOG_DEBUG, " NULL\n"); |
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| 548 | return; |
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| 549 | case AMF_DATA_TYPE_ARRAY: |
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| 550 | parse_key = 0; |
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| 551 | case AMF_DATA_TYPE_MIXEDARRAY: |
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| 552 | nb = bytestream_get_be32(&data); |
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| 553 | case AMF_DATA_TYPE_OBJECT: |
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| 554 | av_log(ctx, AV_LOG_DEBUG, " {\n"); |
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| 555 | while (nb-- > 0 || type != AMF_DATA_TYPE_ARRAY) { |
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| 556 | int t; |
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| 557 | if (parse_key) { |
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| 558 | size = bytestream_get_be16(&data); |
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| 559 | size = FFMIN(size, sizeof(buf) - 1); |
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| 560 | if (!size) { |
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| 561 | av_log(ctx, AV_LOG_DEBUG, " }\n"); |
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| 562 | data++; |
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| 563 | break; |
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| 564 | } |
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| 565 | memcpy(buf, data, size); |
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| 566 | buf[size] = 0; |
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| 567 | if (size >= data_end - data) |
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| 568 | return; |
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| 569 | data += size; |
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| 570 | av_log(ctx, AV_LOG_DEBUG, " %s: ", buf); |
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| 571 | } |
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| 572 | amf_tag_contents(ctx, data, data_end); |
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| 573 | t = ff_amf_tag_size(data, data_end); |
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| 574 | if (t < 0 || t >= data_end - data) |
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| 575 | return; |
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| 576 | data += t; |
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| 577 | } |
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| 578 | return; |
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| 579 | case AMF_DATA_TYPE_OBJECT_END: |
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| 580 | av_log(ctx, AV_LOG_DEBUG, " }\n"); |
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| 581 | return; |
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| 582 | default: |
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| 583 | return; |
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| 584 | } |
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| 585 | } |
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| 586 | |||
| 587 | void ff_rtmp_packet_dump(void *ctx, RTMPPacket *p) |
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| 588 | { |
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| 589 | av_log(ctx, AV_LOG_DEBUG, "RTMP packet type '%s'(%d) for channel %d, timestamp %d, extra field %d size %d\n", |
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| 590 | rtmp_packet_type(p->type), p->type, p->channel_id, p->timestamp, p->extra, p->size); |
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| 591 | if (p->type == RTMP_PT_INVOKE || p->type == RTMP_PT_NOTIFY) { |
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| 592 | uint8_t *src = p->data, *src_end = p->data + p->size; |
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| 593 | while (src < src_end) { |
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| 594 | int sz; |
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| 595 | amf_tag_contents(ctx, src, src_end); |
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| 596 | sz = ff_amf_tag_size(src, src_end); |
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| 597 | if (sz < 0) |
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| 598 | break; |
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| 599 | src += sz; |
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| 600 | } |
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| 601 | } else if (p->type == RTMP_PT_SERVER_BW){ |
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| 602 | av_log(ctx, AV_LOG_DEBUG, "Server BW = %d\n", AV_RB32(p->data)); |
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| 603 | } else if (p->type == RTMP_PT_CLIENT_BW){ |
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| 604 | av_log(ctx, AV_LOG_DEBUG, "Client BW = %d\n", AV_RB32(p->data)); |
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| 605 | } else if (p->type != RTMP_PT_AUDIO && p->type != RTMP_PT_VIDEO && p->type != RTMP_PT_METADATA) { |
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| 606 | int i; |
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| 607 | for (i = 0; i < p->size; i++) |
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| 608 | av_log(ctx, AV_LOG_DEBUG, " %02X", p->data[i]); |
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| 609 | av_log(ctx, AV_LOG_DEBUG, "\n"); |
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| 610 | } |
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| 611 | } |
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| 612 | |||
| 613 | int ff_amf_match_string(const uint8_t *data, int size, const char *str) |
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| 614 | { |
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| 615 | int len = strlen(str); |
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| 616 | int amf_len, type; |
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| 617 | |||
| 618 | if (size < 1) |
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| 619 | return 0; |
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| 620 | |||
| 621 | type = *data++; |
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| 622 | |||
| 623 | if (type != AMF_DATA_TYPE_LONG_STRING && |
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| 624 | type != AMF_DATA_TYPE_STRING) |
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| 625 | return 0; |
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| 626 | |||
| 627 | if (type == AMF_DATA_TYPE_LONG_STRING) { |
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| 628 | if ((size -= 4 + 1) < 0) |
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| 629 | return 0; |
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| 630 | amf_len = bytestream_get_be32(&data); |
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| 631 | } else { |
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| 632 | if ((size -= 2 + 1) < 0) |
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| 633 | return 0; |
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| 634 | amf_len = bytestream_get_be16(&data); |
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| 635 | } |
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| 636 | |||
| 637 | if (amf_len > size) |
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| 638 | return 0; |
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| 639 | |||
| 640 | if (amf_len != len) |
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| 641 | return 0; |
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| 642 | |||
| 643 | return !memcmp(data, str, len); |
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| 644 | } |