/*
* MMS protocol over TCP
* Copyright (c) 2006,2007 Ryan Martell
- * Copyright (c) 2007 Björn Axelsson
+ * Copyright (c) 2007 Björn Axelsson
* Copyright (c) 2010 Zhentan Feng <spyfeng at gmail dot com>
*
- * 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
*/
+
+/* References
+ * MMS protocol specification:
+ * [1]http://msdn.microsoft.com/en-us/library/cc234711(PROT.10).aspx
+ * ASF specification. Revision 01.20.03.
+ * [2]http://msdn.microsoft.com/en-us/library/bb643323.aspx
+ */
+
#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.
/*@}*/
} MMSSCPacketType;
-typedef struct {
- int id;
-}MMSStream;
-
-typedef struct {
+typedef struct MMSTContext {
+ 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
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);
}
/** Send a prepared MMST command packet. */
-static int send_command_packet(MMSContext *mms)
+static int send_command_packet(MMSTContext *mmst)
{
- int exact_length= mms->write_out_ptr - mms->out_buffer;
+ MMSContext *mms = &mmst->mms;
+ int len= mms->write_out_ptr - mms->out_buffer;
+ int exact_length = FFALIGN(len, 8);
int first_length= exact_length - 16;
int len8= first_length/8;
int write_result;
AV_WL32(mms->out_buffer + 8, first_length);
AV_WL32(mms->out_buffer + 16, len8);
AV_WL32(mms->out_buffer + 32, len8-2);
+ 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;
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
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_log(NULL, AV_LOG_TRACE, "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_log(NULL, AV_LOG_TRACE, "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
}
/** 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;
-
- 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;
- }
- } 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;
+ }
+
+ // 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);
}
- // 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);
+ length_remaining= AV_RL32(mms->in_buffer+8) + 4;
+ av_log(NULL, AV_LOG_TRACE, "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) {
+ int err;
+ packet_type = SC_PKT_ASF_HEADER;
+ // Store the asf header
+ if(!mms->header_parsed) {
+ if ((err = av_reallocp(&mms->asf_header,
+ mms->asf_header_size +
+ mms->remaining_in_len)) < 0) {
+ mms->asf_header_size = 0;
+ return err;
+ }
+ 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_log(NULL, AV_LOG_TRACE, "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_log(NULL, AV_LOG_TRACE, "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);
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:%d!\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;
- }
- }
- 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; i<mms->stream_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
}
-
- bytestream_put_le16(&mms->write_out_ptr, 0);
-
- 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;
+ return send_command_packet(mmst);
}
-/** Read at most one media packet (or a whole header). */
-static int read_mms_packet(MMSContext *mms, uint8_t *buf, int buf_size)
+static int send_close_packet(MMSTContext *mmst)
{
- int result = 0, read_header_size = 0;
- int size_to_copy;
+ start_command_packet(mmst, CS_PKT_STREAM_CLOSE);
+ insert_command_prefixes(&mmst->mms, 1, 1);
- 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;
-}
-
-static int send_close_packet(MMSContext *mms)
-{
- start_command_packet(mms, CS_PKT_STREAM_CLOSE);
- insert_command_prefixes(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, h->protocols, h);
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_log(NULL, AV_LOG_TRACE, "asf header parsed failed!\n");
goto fail;
}
mms->header_parsed = 1;
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_log(NULL, AV_LOG_TRACE, "Leaving open (success)\n");
return 0;
fail:
mms_close(h);
- dprintf(NULL, "Leaving open (failure: %d)\n", err);
+ av_log(NULL, AV_LOG_TRACE, "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_log(NULL, AV_LOG_TRACE, "Read ASF media packet size is zero!\n");
+ break;
+ }
+ }
+ } else {
+ av_log(NULL, AV_LOG_TRACE, "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,
+const 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,
};
projects / ffmpeg / blobdiff