X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavformat%2Fmmst.c;h=4b96f5d6afbbb31169db2683d66c0343576516bf;hb=66aabd76a9c0eaa65baad72453ca09eb161fee25;hp=b2f956e65729784c34d3f46ffe8e47f976ebf70f;hpb=d6cc1123e37fb3b795b13e66315d90711c6fd9a7;p=ffmpeg diff --git a/libavformat/mmst.c b/libavformat/mmst.c index b2f956e6572..4b96f5d6afb 100644 --- a/libavformat/mmst.c +++ b/libavformat/mmst.c @@ -4,20 +4,20 @@ * Copyright (c) 2007 Björn Axelsson * Copyright (c) 2010 Zhentan Feng * - * This file is part of FFmpeg. + * This file is part of Libav. * - * FFmpeg is free software; you can redistribute it and/or + * Libav 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, + * Libav 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 + * License along with Libav; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ @@ -29,11 +29,13 @@ */ #include "avformat.h" +#include "mms.h" #include "internal.h" +#include "avio_internal.h" #include "libavutil/intreadwrite.h" #include "libavcodec/bytestream.h" #include "network.h" -#include "asf.h" +#include "url.h" #define LOCAL_ADDRESS 0xc0a80081 // FIXME get and use correct local ip address. #define LOCAL_PORT 1037 // as above. @@ -84,51 +86,20 @@ typedef enum { } MMSSCPacketType; typedef struct { - int id; -}MMSStream; - -typedef struct { + MMSContext mms; int outgoing_packet_seq; ///< Outgoing packet sequence number. char path[256]; ///< Path of the resource being asked for. char host[128]; ///< Host of the resources. - - URLContext *mms_hd; ///< TCP connection handle - MMSStream streams[MAX_STREAMS]; - - /** Buffer for outgoing packets. */ - /*@{*/ - uint8_t *write_out_ptr; ///< Pointer for writting the buffer. - uint8_t out_buffer[512]; ///< Buffer for outgoing packet. - /*@}*/ - - /** Buffer for incoming packets. */ - /*@{*/ - uint8_t in_buffer[8192]; ///< Buffer for incoming packets. - uint8_t *read_in_ptr; ///< Pointer for reading from incoming buffer. - int remaining_in_len; ///< Reading length from incoming buffer. - /*@}*/ - int incoming_packet_seq; ///< Incoming packet sequence number. int incoming_flags; ///< Incoming packet flags. - int packet_id; ///< Identifier for packets in the current stream. unsigned int header_packet_id; ///< default is 2. - - /** Internal handling of the ASF header */ - /*@{*/ - uint8_t *asf_header; ///< Stored ASF header. - int asf_header_size; ///< Size of stored ASF header. - int header_parsed; ///< The header has been received and parsed. - int asf_packet_len; - /*@}*/ - - int stream_num; ///< stream numbers. - int is_playing; -} MMSContext; +} MMSTContext; /** Create MMST command packet header */ -static void start_command_packet(MMSContext *mms, MMSCSPacketType packet_type) +static void start_command_packet(MMSTContext *mmst, MMSCSPacketType packet_type) { + MMSContext *mms = &mmst->mms; mms->write_out_ptr = mms->out_buffer; bytestream_put_le32(&mms->write_out_ptr, 1); // start sequence @@ -136,7 +107,7 @@ static void start_command_packet(MMSContext *mms, MMSCSPacketType packet_type) bytestream_put_le32(&mms->write_out_ptr, 0); // Length starts from after the protocol type bytes bytestream_put_le32(&mms->write_out_ptr, MKTAG('M','M','S',' ')); bytestream_put_le32(&mms->write_out_ptr, 0); - bytestream_put_le32(&mms->write_out_ptr, mms->outgoing_packet_seq++); + bytestream_put_le32(&mms->write_out_ptr, mmst->outgoing_packet_seq++); bytestream_put_le64(&mms->write_out_ptr, 0); // timestamp bytestream_put_le32(&mms->write_out_ptr, 0); bytestream_put_le16(&mms->write_out_ptr, packet_type); @@ -152,10 +123,11 @@ static void insert_command_prefixes(MMSContext *mms, } /** Send a prepared MMST command packet. */ -static int send_command_packet(MMSContext *mms) +static int send_command_packet(MMSTContext *mmst) { + MMSContext *mms = &mmst->mms; int len= mms->write_out_ptr - mms->out_buffer; - int exact_length = (len + 7) & ~7; + int exact_length = FFALIGN(len, 8); int first_length= exact_length - 16; int len8= first_length/8; int write_result; @@ -167,11 +139,14 @@ static int send_command_packet(MMSContext *mms) memset(mms->write_out_ptr, 0, exact_length - len); // write it out. - write_result= url_write(mms->mms_hd, mms->out_buffer, exact_length); + write_result= ffurl_write(mms->mms_hd, mms->out_buffer, exact_length); if(write_result != exact_length) { - dprintf(NULL, "url_write returned: %d != %d\n", - write_result, exact_length); - return AVERROR_IO; + av_log(NULL, AV_LOG_ERROR, + "Failed to write data of length %d: %d (%s)\n", + exact_length, write_result, + write_result < 0 ? strerror(AVUNERROR(write_result)) : + "The server closed the connection"); + return AVERROR(EIO); } return 0; @@ -179,28 +154,29 @@ static int send_command_packet(MMSContext *mms) static void mms_put_utf16(MMSContext *mms, uint8_t *src) { - ByteIOContext bic; + AVIOContext bic; int size = mms->write_out_ptr - mms->out_buffer; int len; - init_put_byte(&bic, mms->write_out_ptr, + ffio_init_context(&bic, mms->write_out_ptr, sizeof(mms->out_buffer) - size, 1, NULL, NULL, NULL, NULL); - len = ff_put_str16_nolen(&bic, src); + len = avio_put_str16le(&bic, src); mms->write_out_ptr += len; } -static int send_time_test_data(MMSContext *mms) +static int send_time_test_data(MMSTContext *mmst) { - start_command_packet(mms, CS_PKT_TIMING_DATA_REQUEST); - insert_command_prefixes(mms, 0xf0f0f0f1, 0x0004000b); - return send_command_packet(mms); + start_command_packet(mmst, CS_PKT_TIMING_DATA_REQUEST); + insert_command_prefixes(&mmst->mms, 0x00f0f0f0, 0x0004000b); + return send_command_packet(mmst); } -static int send_protocol_select(MMSContext *mms) +static int send_protocol_select(MMSTContext *mmst) { char data_string[256]; + MMSContext *mms = &mmst->mms; - start_command_packet(mms, CS_PKT_PROTOCOL_SELECT); + start_command_packet(mmst, CS_PKT_PROTOCOL_SELECT); insert_command_prefixes(mms, 0, 0xffffffff); bytestream_put_le32(&mms->write_out_ptr, 0); // maxFunnelBytes bytestream_put_le32(&mms->write_out_ptr, 0x00989680); // maxbitRate @@ -214,35 +190,37 @@ static int send_protocol_select(MMSContext *mms) LOCAL_PORT); mms_put_utf16(mms, data_string); - return send_command_packet(mms); + return send_command_packet(mmst); } -static int send_media_file_request(MMSContext *mms) +static int send_media_file_request(MMSTContext *mmst) { - start_command_packet(mms, CS_PKT_MEDIA_FILE_REQUEST); + MMSContext *mms = &mmst->mms; + start_command_packet(mmst, CS_PKT_MEDIA_FILE_REQUEST); insert_command_prefixes(mms, 1, 0xffffffff); bytestream_put_le32(&mms->write_out_ptr, 0); bytestream_put_le32(&mms->write_out_ptr, 0); - mms_put_utf16(mms, mms->path + 1); // +1 for skip "/" + mms_put_utf16(mms, mmst->path + 1); // +1 for skip "/" - return send_command_packet(mms); + return send_command_packet(mmst); } -static void handle_packet_stream_changing_type(MMSContext *mms) +static void handle_packet_stream_changing_type(MMSTContext *mmst) { - dprintf(NULL, "Stream changing!\n"); + MMSContext *mms = &mmst->mms; + av_dlog(NULL, "Stream changing!\n"); // 40 is the packet header size, 7 is the prefix size. - mms->header_packet_id= AV_RL32(mms->in_buffer + 40 + 7); - dprintf(NULL, "Changed header prefix to 0x%x", mms->header_packet_id); + mmst->header_packet_id= AV_RL32(mms->in_buffer + 40 + 7); + av_dlog(NULL, "Changed header prefix to 0x%x", mmst->header_packet_id); } -static int send_keepalive_packet(MMSContext *mms) +static int send_keepalive_packet(MMSTContext *mmst) { // respond to a keepalive with a keepalive... - start_command_packet(mms, CS_PKT_KEEPALIVE); - insert_command_prefixes(mms, 1, 0x100FFFF); - return send_command_packet(mms); + start_command_packet(mmst, CS_PKT_KEEPALIVE); + insert_command_prefixes(&mmst->mms, 1, 0x100FFFF); + return send_command_packet(mmst); } /** Pad media packets smaller than max_packet_size and/or adjust read position @@ -257,149 +235,167 @@ static void pad_media_packet(MMSContext *mms) } /** Read incoming MMST media, header or command packet. */ -static MMSSCPacketType get_tcp_server_response(MMSContext *mms) +static MMSSCPacketType get_tcp_server_response(MMSTContext *mmst) { int read_result; MMSSCPacketType packet_type= -1; - + MMSContext *mms = &mmst->mms; for(;;) { - if((read_result= url_read_complete(mms->mms_hd, mms->in_buffer, 8))==8) { - // handle command packet. - if(AV_RL32(mms->in_buffer + 4)==0xb00bface) { - mms->incoming_flags= mms->in_buffer[3]; - read_result= url_read_complete(mms->mms_hd, mms->in_buffer+8, 4); - if(read_result == 4) { - int length_remaining= AV_RL32(mms->in_buffer+8) + 4; - int hr; - - dprintf(NULL, "Length remaining is %d\n", length_remaining); - // read the rest of the packet. - if (length_remaining < 0 - || length_remaining > sizeof(mms->in_buffer) - 12) { - dprintf(NULL, "Incoming message len %d exceeds buffer len %d\n", - length_remaining, sizeof(mms->in_buffer) - 12); - return -1; - } - read_result = url_read_complete(mms->mms_hd, mms->in_buffer + 12, - length_remaining) ; - if (read_result == length_remaining) { - packet_type= AV_RL16(mms->in_buffer+36); - } else { - dprintf(NULL, "read for packet type failed%d!\n", read_result); - return -1; - } - hr = AV_RL32(mms->in_buffer + 40); - if (hr) { - dprintf(NULL, "The server side send back error code:0x%x\n", hr); - return -1; - } - } else { - dprintf(NULL, "read for length remaining failed%d!\n", read_result); - return -1; - } + read_result = ffurl_read_complete(mms->mms_hd, mms->in_buffer, 8); + if (read_result != 8) { + if(read_result < 0) { + av_log(NULL, AV_LOG_ERROR, + "Error reading packet header: %d (%s)\n", + read_result, strerror(AVUNERROR(read_result))); + packet_type = SC_PKT_CANCEL; } else { - int length_remaining; - int packet_id_type; - int tmp; - - assert(mms->remaining_in_len==0); - - // note we cache the first 8 bytes, - // then fill up the buffer with the others - tmp = AV_RL16(mms->in_buffer + 6); - length_remaining = (tmp - 8) & 0xffff; - mms->incoming_packet_seq = AV_RL32(mms->in_buffer); - packet_id_type = mms->in_buffer[4]; - mms->incoming_flags = mms->in_buffer[5]; - - if (length_remaining < 0 - || length_remaining > sizeof(mms->in_buffer) - 8) { - dprintf(NULL, "Incoming data len %d exceeds buffer len %d\n", - length_remaining, sizeof(mms->in_buffer)); - return -1; - } - mms->remaining_in_len = length_remaining; - mms->read_in_ptr = mms->in_buffer; - read_result= url_read_complete(mms->mms_hd, mms->in_buffer, length_remaining); - if(read_result != length_remaining) { - dprintf(NULL, "read_bytes result: %d asking for %d\n", - read_result, length_remaining); - return -1; - } else { - // if we successfully read everything. - if(packet_id_type == mms->header_packet_id) { - packet_type = SC_PKT_ASF_HEADER; - // Store the asf header - if(!mms->header_parsed) { - void *p = av_realloc(mms->asf_header, - mms->asf_header_size - + mms->remaining_in_len); - if (!p) { - av_freep(&mms->asf_header); - return AVERROR(ENOMEM); - } - mms->asf_header = p; - memcpy(mms->asf_header + mms->asf_header_size, - mms->read_in_ptr, - mms->remaining_in_len); - mms->asf_header_size += mms->remaining_in_len; - } - } else if(packet_id_type == mms->packet_id) { - packet_type = SC_PKT_ASF_MEDIA; - } else { - dprintf(NULL, "packet id type %d is old.", packet_id_type); - continue; - } - } + av_log(NULL, AV_LOG_ERROR, + "The server closed the connection\n"); + packet_type = SC_PKT_NO_DATA; } + return packet_type; + } - // preprocess some packet type - if(packet_type == SC_PKT_KEEPALIVE) { - send_keepalive_packet(mms); - continue; - } else if(packet_type == SC_PKT_STREAM_CHANGING) { - handle_packet_stream_changing_type(mms); - } else if(packet_type == SC_PKT_ASF_MEDIA) { - pad_media_packet(mms); + // handle command packet. + if(AV_RL32(mms->in_buffer + 4)==0xb00bface) { + int length_remaining, hr; + + mmst->incoming_flags= mms->in_buffer[3]; + read_result= ffurl_read_complete(mms->mms_hd, mms->in_buffer+8, 4); + if(read_result != 4) { + av_log(NULL, AV_LOG_ERROR, + "Reading command packet length failed: %d (%s)\n", + read_result, + read_result < 0 ? strerror(AVUNERROR(read_result)) : + "The server closed the connection"); + return read_result < 0 ? read_result : AVERROR(EIO); + } + + length_remaining= AV_RL32(mms->in_buffer+8) + 4; + av_dlog(NULL, "Length remaining is %d\n", length_remaining); + // read the rest of the packet. + if (length_remaining < 0 + || length_remaining > sizeof(mms->in_buffer) - 12) { + av_log(NULL, AV_LOG_ERROR, + "Incoming packet length %d exceeds bufsize %zu\n", + length_remaining, sizeof(mms->in_buffer) - 12); + return AVERROR_INVALIDDATA; + } + read_result = ffurl_read_complete(mms->mms_hd, mms->in_buffer + 12, + length_remaining) ; + if (read_result != length_remaining) { + av_log(NULL, AV_LOG_ERROR, + "Reading pkt data (length=%d) failed: %d (%s)\n", + length_remaining, read_result, + read_result < 0 ? strerror(AVUNERROR(read_result)) : + "The server closed the connection"); + return read_result < 0 ? read_result : AVERROR(EIO); + } + packet_type= AV_RL16(mms->in_buffer+36); + if (read_result >= 44 && (hr = AV_RL32(mms->in_buffer + 40))) { + av_log(NULL, AV_LOG_ERROR, + "Server sent a message with packet type 0x%x and error status code 0x%08x\n", packet_type, hr); + return AVERROR(EINVAL); } - return packet_type; } else { - if(read_result<0) { - dprintf(NULL, "Read error (or cancelled) returned %d!\n", read_result); - packet_type = SC_PKT_CANCEL; + int length_remaining; + int packet_id_type; + int tmp; + + // note we cache the first 8 bytes, + // then fill up the buffer with the others + tmp = AV_RL16(mms->in_buffer + 6); + length_remaining = (tmp - 8) & 0xffff; + mmst->incoming_packet_seq = AV_RL32(mms->in_buffer); + packet_id_type = mms->in_buffer[4]; + mmst->incoming_flags = mms->in_buffer[5]; + + if (length_remaining < 0 + || length_remaining > sizeof(mms->in_buffer) - 8) { + av_log(NULL, AV_LOG_ERROR, + "Data length %d is invalid or too large (max=%zu)\n", + length_remaining, sizeof(mms->in_buffer)); + return AVERROR_INVALIDDATA; + } + mms->remaining_in_len = length_remaining; + mms->read_in_ptr = mms->in_buffer; + read_result= ffurl_read_complete(mms->mms_hd, mms->in_buffer, length_remaining); + if(read_result != length_remaining) { + av_log(NULL, AV_LOG_ERROR, + "Failed to read packet data of size %d: %d (%s)\n", + length_remaining, read_result, + read_result < 0 ? strerror(AVUNERROR(read_result)) : + "The server closed the connection"); + return read_result < 0 ? read_result : AVERROR(EIO); + } + + // if we successfully read everything. + if(packet_id_type == mmst->header_packet_id) { + packet_type = SC_PKT_ASF_HEADER; + // Store the asf header + if(!mms->header_parsed) { + void *p = av_realloc(mms->asf_header, + mms->asf_header_size + mms->remaining_in_len); + if (!p) { + av_freep(&mms->asf_header); + return AVERROR(ENOMEM); + } + mms->asf_header = p; + memcpy(mms->asf_header + mms->asf_header_size, + mms->read_in_ptr, mms->remaining_in_len); + mms->asf_header_size += mms->remaining_in_len; + } + // 0x04 means asf header is sent in multiple packets. + if (mmst->incoming_flags == 0x04) + continue; + } else if(packet_id_type == mmst->packet_id) { + packet_type = SC_PKT_ASF_MEDIA; } else { - dprintf(NULL, "Read result of zero?!\n"); - packet_type = SC_PKT_NO_DATA; + av_dlog(NULL, "packet id type %d is old.", packet_id_type); + continue; } - return packet_type; } + + // preprocess some packet type + if(packet_type == SC_PKT_KEEPALIVE) { + send_keepalive_packet(mmst); + continue; + } else if(packet_type == SC_PKT_STREAM_CHANGING) { + handle_packet_stream_changing_type(mmst); + } else if(packet_type == SC_PKT_ASF_MEDIA) { + pad_media_packet(mms); + } + return packet_type; } } -static int mms_safe_send_recv(MMSContext *mms, - int (*send_fun)(MMSContext *mms), +static int mms_safe_send_recv(MMSTContext *mmst, + int (*send_fun)(MMSTContext *mmst), const MMSSCPacketType expect_type) { MMSSCPacketType type; if(send_fun) { - int ret = send_fun(mms); + int ret = send_fun(mmst); if (ret < 0) { - dprintf(NULL, "Send Packet error before expecting recv packet %d\n", expect_type); + av_dlog(NULL, "Send Packet error before expecting recv packet %d\n", expect_type); return ret; } } - if ((type = get_tcp_server_response(mms)) != expect_type) { - dprintf(NULL,"Unexpected packet type %d with type %d\n", type, expect_type); - return -1; + if ((type = get_tcp_server_response(mmst)) != expect_type) { + av_log(NULL, AV_LOG_ERROR, + "Corrupt stream (unexpected packet type 0x%x, expected 0x%x)\n", + type, expect_type); + return AVERROR_INVALIDDATA; } else { return 0; } } -static int send_media_header_request(MMSContext *mms) +static int send_media_header_request(MMSTContext *mmst) { - start_command_packet(mms, CS_PKT_MEDIA_HEADER_REQUEST); + MMSContext *mms = &mmst->mms; + start_command_packet(mmst, CS_PKT_MEDIA_HEADER_REQUEST); insert_command_prefixes(mms, 1, 0); bytestream_put_le32(&mms->write_out_ptr, 0); bytestream_put_le32(&mms->write_out_ptr, 0x00800000); @@ -414,233 +410,149 @@ static int send_media_header_request(MMSContext *mms) bytestream_put_le32(&mms->write_out_ptr, 2); bytestream_put_le32(&mms->write_out_ptr, 0); - return send_command_packet(mms); + return send_command_packet(mmst); } /** Send the initial handshake. */ -static int send_startup_packet(MMSContext *mms) +static int send_startup_packet(MMSTContext *mmst) { char data_string[256]; + MMSContext *mms = &mmst->mms; // SubscriberName is defined in MS specification linked below. // The guid value can be any valid value. // http://download.microsoft.com/ // download/9/5/E/95EF66AF-9026-4BB0-A41D-A4F81802D92C/%5BMS-WMSP%5D.pdf snprintf(data_string, sizeof(data_string), "NSPlayer/7.0.0.1956; {%s}; Host: %s", - "7E667F5D-A661-495E-A512-F55686DDA178", mms->host); + "7E667F5D-A661-495E-A512-F55686DDA178", mmst->host); - start_command_packet(mms, CS_PKT_INITIAL); + start_command_packet(mmst, CS_PKT_INITIAL); insert_command_prefixes(mms, 0, 0x0004000b); bytestream_put_le32(&mms->write_out_ptr, 0x0003001c); mms_put_utf16(mms, data_string); - return send_command_packet(mms); -} - -static int asf_header_parser(MMSContext *mms) -{ - uint8_t *p = mms->asf_header; - uint8_t *end; - int flags, stream_id, real_header_size; - mms->stream_num = 0; - - if (mms->asf_header_size < sizeof(ff_asf_guid) * 2 + 22 || - memcmp(p, ff_asf_header, sizeof(ff_asf_guid))) - return -1; - - real_header_size = AV_RL64(p + sizeof(ff_asf_guid)); - end = mms->asf_header + real_header_size; - - p += sizeof(ff_asf_guid) + 14; - while(end - p >= sizeof(ff_asf_guid) + 8) { - uint64_t chunksize = AV_RL64(p + sizeof(ff_asf_guid)); - if (!chunksize || chunksize > end - p) { - dprintf(NULL, "chunksize is exceptional value:%"PRId64"!\n", chunksize); - return -1; - } - if (!memcmp(p, ff_asf_file_header, sizeof(ff_asf_guid))) { - /* read packet size */ - if (end - p > sizeof(ff_asf_guid) * 2 + 68) { - mms->asf_packet_len = AV_RL32(p + sizeof(ff_asf_guid) * 2 + 64); - if (mms->asf_packet_len <= 0 || mms->asf_packet_len > sizeof(mms->in_buffer)) { - dprintf(NULL,"Too large packet len:%d" - " may overwrite in_buffer when padding", mms->asf_packet_len); - return -1; - } - } - } else if (!memcmp(p, ff_asf_stream_header, sizeof(ff_asf_guid))) { - flags = AV_RL16(p + sizeof(ff_asf_guid)*3 + 24); - stream_id = flags & 0x7F; - //The second condition is for checking CS_PKT_STREAM_ID_REQUEST packet size, - //we can calcuate the packet size by stream_num. - //Please see function send_stream_selection_request(). - if (mms->stream_num < MAX_STREAMS && - 46 + mms->stream_num * 6 < sizeof(mms->out_buffer)) { - mms->streams[mms->stream_num].id = stream_id; - mms->stream_num++; - } else { - dprintf(NULL, "Too many streams.\n"); - return -1; - } - } else if (!memcmp(p, ff_asf_head1_guid, sizeof(ff_asf_guid))) { - chunksize = 46; // see references [2] section 3.4. This should be set 46. - } - p += chunksize; - } - - return 0; + return send_command_packet(mmst); } /** Send MMST stream selection command based on the AVStream->discard values. */ -static int send_stream_selection_request(MMSContext *mms) +static int send_stream_selection_request(MMSTContext *mmst) { int i; - + MMSContext *mms = &mmst->mms; // send the streams we want back... - start_command_packet(mms, CS_PKT_STREAM_ID_REQUEST); + start_command_packet(mmst, CS_PKT_STREAM_ID_REQUEST); bytestream_put_le32(&mms->write_out_ptr, mms->stream_num); // stream nums for(i= 0; istream_num; i++) { bytestream_put_le16(&mms->write_out_ptr, 0xffff); // flags bytestream_put_le16(&mms->write_out_ptr, mms->streams[i].id); // stream id bytestream_put_le16(&mms->write_out_ptr, 0); // selection } - return send_command_packet(mms); -} - -static int read_data(MMSContext *mms, uint8_t *buf, const int buf_size) -{ - int read_size; - read_size = FFMIN(buf_size, mms->remaining_in_len); - memcpy(buf, mms->read_in_ptr, read_size); - mms->remaining_in_len -= read_size; - mms->read_in_ptr += read_size; - return read_size; -} - -/** Read at most one media packet (or a whole header). */ -static int read_mms_packet(MMSContext *mms, uint8_t *buf, int buf_size) -{ - int result = 0, read_header_size = 0; - int size_to_copy; - - do { - if(read_header_size < mms->asf_header_size && !mms->is_playing) { - /* Read from ASF header buffer */ - size_to_copy= FFMIN(buf_size, - mms->asf_header_size - read_header_size); - memcpy(buf, mms->asf_header + read_header_size, size_to_copy); - read_header_size += size_to_copy; - result += size_to_copy; - dprintf(NULL, "Copied %d bytes from stored header. left: %d\n", - size_to_copy, mms->asf_header_size - read_header_size); - if (mms->asf_header_size == read_header_size) { - av_freep(&mms->asf_header); - mms->is_playing = 1; - } - } else if(mms->remaining_in_len) { - /* Read remaining packet data to buffer. - * the result can not be zero because remaining_in_len is positive.*/ - result = read_data(mms, buf, buf_size); - } else { - /* Read from network */ - int err = mms_safe_send_recv(mms, NULL, SC_PKT_ASF_MEDIA); - if (err == 0) { - if(mms->remaining_in_len>mms->asf_packet_len) { - dprintf(NULL, "Incoming packet" - "larger than the asf packet size stated (%d>%d)\n", - mms->remaining_in_len, mms->asf_packet_len); - result= AVERROR_IO; - } else { - // copy the data to the packet buffer. - result = read_data(mms, buf, buf_size); - if (result == 0) { - dprintf(NULL, "read asf media paket size is zero!\n"); - break; - } - } - } else { - dprintf(NULL, "read packet error!\n"); - break; - } - } - } while(!result); // only return one packet. - return result; + return send_command_packet(mmst); } -static int send_close_packet(MMSContext *mms) +static int send_close_packet(MMSTContext *mmst) { - start_command_packet(mms, CS_PKT_STREAM_CLOSE); - insert_command_prefixes(mms, 1, 1); + start_command_packet(mmst, CS_PKT_STREAM_CLOSE); + insert_command_prefixes(&mmst->mms, 1, 1); - return send_command_packet(mms); + return send_command_packet(mmst); } /** Close the MMSH/MMST connection */ static int mms_close(URLContext *h) { - MMSContext *mms = (MMSContext *)h->priv_data; - + MMSTContext *mmst = (MMSTContext *)h->priv_data; + MMSContext *mms = &mmst->mms; if(mms->mms_hd) { - send_close_packet(mms); - url_close(mms->mms_hd); + send_close_packet(mmst); + ffurl_close(mms->mms_hd); } /* free all separately allocated pointers in mms */ + av_free(mms->streams); av_free(mms->asf_header); - av_freep(&h->priv_data); return 0; } +static int send_media_packet_request(MMSTContext *mmst) +{ + MMSContext *mms = &mmst->mms; + start_command_packet(mmst, CS_PKT_START_FROM_PKT_ID); + insert_command_prefixes(mms, 1, 0x0001FFFF); + bytestream_put_le64(&mms->write_out_ptr, 0); // seek timestamp + bytestream_put_le32(&mms->write_out_ptr, 0xffffffff); // unknown + bytestream_put_le32(&mms->write_out_ptr, 0xffffffff); // packet offset + bytestream_put_byte(&mms->write_out_ptr, 0xff); // max stream time limit + bytestream_put_byte(&mms->write_out_ptr, 0xff); // max stream time limit + bytestream_put_byte(&mms->write_out_ptr, 0xff); // max stream time limit + bytestream_put_byte(&mms->write_out_ptr, 0x00); // stream time limit flag + + mmst->packet_id++; // new packet_id + bytestream_put_le32(&mms->write_out_ptr, mmst->packet_id); + return send_command_packet(mmst); +} + + +static void clear_stream_buffers(MMSContext *mms) +{ + mms->remaining_in_len = 0; + mms->read_in_ptr = mms->in_buffer; +} + static int mms_open(URLContext *h, const char *uri, int flags) { + MMSTContext *mmst = h->priv_data; MMSContext *mms; int port, err; char tcpname[256]; h->is_streamed = 1; - mms = h->priv_data = av_mallocz(sizeof(MMSContext)); - if (!h->priv_data) - return AVERROR(ENOMEM); + mms = &mmst->mms; // only for MMS over TCP, so set proto = NULL av_url_split(NULL, 0, NULL, 0, - mms->host, sizeof(mms->host), &port, mms->path, - sizeof(mms->path), uri); + mmst->host, sizeof(mmst->host), &port, mmst->path, + sizeof(mmst->path), uri); if(port<0) port = 1755; // defaut mms protocol port // establish tcp connection. - ff_url_join(tcpname, sizeof(tcpname), "tcp", NULL, mms->host, port, NULL); - err = url_open(&mms->mms_hd, tcpname, URL_RDWR); + ff_url_join(tcpname, sizeof(tcpname), "tcp", NULL, mmst->host, port, NULL); + err = ffurl_open(&mms->mms_hd, tcpname, AVIO_FLAG_READ_WRITE, + &h->interrupt_callback, NULL); if (err) goto fail; - mms->packet_id = 3; // default, initial value. - mms->header_packet_id = 2; // default, initial value. - err = mms_safe_send_recv(mms, send_startup_packet, SC_PKT_CLIENT_ACCEPTED); + mmst->packet_id = 3; // default, initial value. + mmst->header_packet_id = 2; // default, initial value. + err = mms_safe_send_recv(mmst, send_startup_packet, SC_PKT_CLIENT_ACCEPTED); if (err) goto fail; - err = mms_safe_send_recv(mms, send_time_test_data, SC_PKT_TIMING_TEST_REPLY); + err = mms_safe_send_recv(mmst, send_time_test_data, SC_PKT_TIMING_TEST_REPLY); if (err) goto fail; - err = mms_safe_send_recv(mms, send_protocol_select, SC_PKT_PROTOCOL_ACCEPTED); + err = mms_safe_send_recv(mmst, send_protocol_select, SC_PKT_PROTOCOL_ACCEPTED); if (err) goto fail; - err = mms_safe_send_recv(mms, send_media_file_request, SC_PKT_MEDIA_FILE_DETAILS); + err = mms_safe_send_recv(mmst, send_media_file_request, SC_PKT_MEDIA_FILE_DETAILS); if (err) goto fail; - err = mms_safe_send_recv(mms, send_media_header_request, SC_PKT_HEADER_REQUEST_ACCEPTED); + err = mms_safe_send_recv(mmst, send_media_header_request, SC_PKT_HEADER_REQUEST_ACCEPTED); if (err) goto fail; - err = mms_safe_send_recv(mms, NULL, SC_PKT_ASF_HEADER); + err = mms_safe_send_recv(mmst, NULL, SC_PKT_ASF_HEADER); if (err) goto fail; - if((mms->incoming_flags != 0X08) && (mms->incoming_flags != 0X0C)) + if((mmst->incoming_flags != 0X08) && (mmst->incoming_flags != 0X0C)) { + av_log(NULL, AV_LOG_ERROR, + "The server does not support MMST (try MMSH or RTSP)\n"); + err = AVERROR(EINVAL); goto fail; - err = asf_header_parser(mms); + } + err = ff_mms_asf_header_parser(mms); if (err) { - dprintf(NULL, "asf header parsed failed!\n"); + av_dlog(NULL, "asf header parsed failed!\n"); goto fail; } mms->header_parsed = 1; @@ -648,68 +560,70 @@ static int mms_open(URLContext *h, const char *uri, int flags) if (!mms->asf_packet_len || !mms->stream_num) goto fail; - dprintf(NULL, "Leaving open (success)\n"); + clear_stream_buffers(mms); + err = mms_safe_send_recv(mmst, send_stream_selection_request, SC_PKT_STREAM_ID_ACCEPTED); + if (err) + goto fail; + // send media packet request + err = mms_safe_send_recv(mmst, send_media_packet_request, SC_PKT_MEDIA_PKT_FOLLOWS); + if (err) { + goto fail; + } + av_dlog(NULL, "Leaving open (success)\n"); return 0; fail: mms_close(h); - dprintf(NULL, "Leaving open (failure: %d)\n", err); + av_dlog(NULL, "Leaving open (failure: %d)\n", err); return err; } -static int send_media_packet_request(MMSContext *mms) -{ - start_command_packet(mms, CS_PKT_START_FROM_PKT_ID); - insert_command_prefixes(mms, 1, 0x0001FFFF); - bytestream_put_le64(&mms->write_out_ptr, 0); // seek timestamp - bytestream_put_le32(&mms->write_out_ptr, 0xffffffff); // unknown - bytestream_put_le32(&mms->write_out_ptr, 0xffffffff); // packet offset - bytestream_put_byte(&mms->write_out_ptr, 0xff); // max stream time limit - bytestream_put_byte(&mms->write_out_ptr, 0xff); // max stream time limit - bytestream_put_byte(&mms->write_out_ptr, 0xff); // max stream time limit - bytestream_put_byte(&mms->write_out_ptr, 0x00); // stream time limit flag - - mms->packet_id++; // new packet_id - bytestream_put_le32(&mms->write_out_ptr, mms->packet_id); - return send_command_packet(mms); -} - - -static void clear_stream_buffers(MMSContext *mms) -{ - mms->remaining_in_len = 0; - mms->read_in_ptr = mms->in_buffer; -} - /** Read ASF data through the protocol. */ static int mms_read(URLContext *h, uint8_t *buf, int size) { /* TODO: see tcp.c:tcp_read() about a possible timeout scheme */ - MMSContext *mms = h->priv_data; + MMSTContext *mmst = h->priv_data; + MMSContext *mms = &mmst->mms; int result = 0; - /* Since we read the header at open(), this shouldn't be possible */ - assert(mms->header_parsed); - - if (!mms->is_playing) { - dprintf(NULL, "mms_read() before play().\n"); - clear_stream_buffers(mms); - result = mms_safe_send_recv(mms, send_stream_selection_request, SC_PKT_STREAM_ID_ACCEPTED); - if (result) - return result; - // send media packet request - result = mms_safe_send_recv(mms, send_media_packet_request, SC_PKT_MEDIA_PKT_FOLLOWS); - if (result) { - return result; + do { + if(mms->asf_header_read_size < mms->asf_header_size) { + /* Read from ASF header buffer */ + result = ff_mms_read_header(mms, buf, size); + } else if(mms->remaining_in_len) { + /* Read remaining packet data to buffer. + * the result can not be zero because remaining_in_len is positive.*/ + result = ff_mms_read_data(mms, buf, size); + } else { + /* Read from network */ + int err = mms_safe_send_recv(mmst, NULL, SC_PKT_ASF_MEDIA); + if (err == 0) { + if(mms->remaining_in_len>mms->asf_packet_len) { + av_log(NULL, AV_LOG_ERROR, + "Incoming pktlen %d is larger than ASF pktsize %d\n", + mms->remaining_in_len, mms->asf_packet_len); + result= AVERROR(EIO); + } else { + // copy the data to the packet buffer. + result = ff_mms_read_data(mms, buf, size); + if (result == 0) { + av_dlog(NULL, "Read ASF media packet size is zero!\n"); + break; + } + } + } else { + av_dlog(NULL, "read packet error!\n"); + break; + } } - } - return read_mms_packet(mms, buf, size); + } while(!result); // only return one packet. + return result; } -URLProtocol mmst_protocol = { - "mmst", - mms_open, - mms_read, - NULL, // write - NULL, // seek - mms_close, +URLProtocol ff_mmst_protocol = { + .name = "mmst", + .url_open = mms_open, + .url_read = mms_read, + .url_close = mms_close, + .priv_data_size = sizeof(MMSTContext), + .flags = URL_PROTOCOL_FLAG_NETWORK, };