/*
* 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
*/
*/
#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 {
- 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.
- /*@}*/
-
-
- /** 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 asf_header_read_size;
- /*@}*/
-
- int stream_num; ///< stream numbers.
-} MMSContext;
-
typedef struct {
MMSContext mms;
int outgoing_packet_seq; ///< Outgoing packet sequence number.
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) {
av_log(NULL, AV_LOG_ERROR,
"Failed to write data of length %d: %d (%s)\n",
exact_length, write_result,
- write_result < 0 ? strerror(write_result) :
+ write_result < 0 ? strerror(AVUNERROR(write_result)) :
"The server closed the connection");
- return AVERROR_IO;
+ 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(MMSTContext *mmst)
{
start_command_packet(mmst, CS_PKT_TIMING_DATA_REQUEST);
- insert_command_prefixes(&mmst->mms, 0xf0f0f0f1, 0x0004000b);
+ insert_command_prefixes(&mmst->mms, 0x00f0f0f0, 0x0004000b);
return send_command_packet(mmst);
}
static void handle_packet_stream_changing_type(MMSTContext *mmst)
{
MMSContext *mms = &mmst->mms;
- dprintf(NULL, "Stream changing!\n");
+ av_dlog(NULL, "Stream changing!\n");
// 40 is the packet header size, 7 is the prefix size.
mmst->header_packet_id= AV_RL32(mms->in_buffer + 40 + 7);
- dprintf(NULL, "Changed header prefix to 0x%x", mmst->header_packet_id);
+ av_dlog(NULL, "Changed header prefix to 0x%x", mmst->header_packet_id);
}
static int send_keepalive_packet(MMSTContext *mmst)
MMSSCPacketType packet_type= -1;
MMSContext *mms = &mmst->mms;
for(;;) {
- read_result = url_read_complete(mms->mms_hd, mms->in_buffer, 8);
+ 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(read_result));
+ read_result, strerror(AVUNERROR(read_result)));
packet_type = SC_PKT_CANCEL;
} else {
av_log(NULL, AV_LOG_ERROR,
int length_remaining, hr;
mmst->incoming_flags= mms->in_buffer[3];
- read_result= url_read_complete(mms->mms_hd, mms->in_buffer+8, 4);
+ 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(read_result) :
+ read_result < 0 ? strerror(AVUNERROR(read_result)) :
"The server closed the connection");
- return read_result < 0 ? read_result : AVERROR_IO;
+ return read_result < 0 ? read_result : AVERROR(EIO);
}
length_remaining= AV_RL32(mms->in_buffer+8) + 4;
- dprintf(NULL, "Length remaining is %d\n", length_remaining);
+ 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) {
length_remaining, sizeof(mms->in_buffer) - 12);
return AVERROR_INVALIDDATA;
}
- read_result = url_read_complete(mms->mms_hd, mms->in_buffer + 12,
+ 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(read_result) :
+ read_result < 0 ? strerror(AVUNERROR(read_result)) :
"The server closed the connection");
- return read_result < 0 ? read_result : AVERROR_IO;
+ return read_result < 0 ? read_result : AVERROR(EIO);
}
packet_type= AV_RL16(mms->in_buffer+36);
- hr = AV_RL32(mms->in_buffer + 40);
- if (hr) {
+ if (read_result >= 44 && (hr = AV_RL32(mms->in_buffer + 40))) {
av_log(NULL, AV_LOG_ERROR,
- "Server sent an error status code: 0x%08x\n", hr);
- return AVERROR_UNKNOWN;
+ "Server sent a message with packet type 0x%x and error status code 0x%08x\n", packet_type, hr);
+ return AVERROR(EINVAL);
}
} else {
int length_remaining;
}
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);
+ 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(read_result) :
+ read_result < 0 ? strerror(AVUNERROR(read_result)) :
"The server closed the connection");
- return read_result < 0 ? read_result : AVERROR_IO;
+ 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) {
- 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);
+ if ((err = av_reallocp(&mms->asf_header,
+ mms->asf_header_size +
+ mms->remaining_in_len)) < 0) {
+ mms->asf_header_size = 0;
+ return err;
}
- 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 == mmst->packet_id) {
packet_type = SC_PKT_ASF_MEDIA;
} else {
- dprintf(NULL, "packet id type %d is old.", packet_id_type);
+ av_dlog(NULL, "packet id type %d is old.", packet_id_type);
continue;
}
}
if(send_fun) {
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;
}
}
return send_command_packet(mmst);
}
-static int asf_header_parser(MMSContext *mms)
-{
- uint8_t *p = mms->asf_header;
- uint8_t *end;
- int flags, stream_id;
- mms->stream_num = 0;
-
- if (mms->asf_header_size < sizeof(ff_asf_guid) * 2 + 22 ||
- memcmp(p, ff_asf_header, sizeof(ff_asf_guid))) {
- av_log(NULL, AV_LOG_ERROR,
- "Corrupt stream (invalid ASF header, size=%d)\n",
- mms->asf_header_size);
- return AVERROR_INVALIDDATA;
- }
-
- end = mms->asf_header + mms->asf_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) {
- av_log(NULL, AV_LOG_ERROR,
- "Corrupt stream (header chunksize %"PRId64" is invalid)\n",
- chunksize);
- return AVERROR_INVALIDDATA;
- }
- 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)) {
- av_log(NULL, AV_LOG_ERROR,
- "Corrupt stream (too large pkt_len %d)\n",
- mms->asf_packet_len);
- return AVERROR_INVALIDDATA;
- }
- }
- } 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 {
- av_log(NULL, AV_LOG_ERROR,
- "Corrupt stream (too many A/V streams)\n");
- return AVERROR_INVALIDDATA;
- }
- } 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;
-}
-
/** Send MMST stream selection command based on the AVStream->discard values. */
static int send_stream_selection_request(MMSTContext *mmst)
{
return send_command_packet(mmst);
}
-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;
-}
-
static int send_close_packet(MMSTContext *mmst)
{
start_command_packet(mmst, CS_PKT_STREAM_CLOSE);
MMSContext *mms = &mmst->mms;
if(mms->mms_hd) {
send_close_packet(mmst);
- url_close(mms->mms_hd);
+ 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 mms_open(URLContext *h, const char *uri, int flags)
{
- MMSTContext *mmst;
+ MMSTContext *mmst = h->priv_data;
MMSContext *mms;
int port, err;
char tcpname[256];
h->is_streamed = 1;
- mmst = h->priv_data = av_mallocz(sizeof(MMSTContext));
- if (!h->priv_data)
- return AVERROR(ENOMEM);
mms = &mmst->mms;
// only for MMS over TCP, so set proto = NULL
// establish tcp connection.
ff_url_join(tcpname, sizeof(tcpname), "tcp", NULL, mmst->host, port, NULL);
- err = url_open(&mms->mms_hd, tcpname, URL_RDWR);
+ err = ffurl_open(&mms->mms_hd, tcpname, AVIO_FLAG_READ_WRITE,
+ &h->interrupt_callback, NULL);
if (err)
goto fail;
err = mms_safe_send_recv(mmst, NULL, SC_PKT_ASF_HEADER);
if (err)
goto fail;
- if((mmst->incoming_flags != 0X08) && (mmst->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;
if (err) {
goto fail;
}
- dprintf(NULL, "Leaving open (success)\n");
+ 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;
}
MMSTContext *mmst = h->priv_data;
MMSContext *mms = &mmst->mms;
int result = 0;
- int size_to_copy;
do {
if(mms->asf_header_read_size < mms->asf_header_size) {
/* Read from ASF header buffer */
- size_to_copy= FFMIN(size,
- mms->asf_header_size - mms->asf_header_read_size);
- memcpy(buf, mms->asf_header + mms->asf_header_read_size, size_to_copy);
- mms->asf_header_read_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 - mms->asf_header_read_size);
- if (mms->asf_header_size == mms->asf_header_read_size) {
- av_freep(&mms->asf_header);
- }
+ 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 = read_data(mms, buf, size);
+ result = ff_mms_read_data(mms, buf, size);
} else {
/* Read from network */
int err = mms_safe_send_recv(mmst, NULL, SC_PKT_ASF_MEDIA);
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_IO;
+ result= AVERROR(EIO);
} else {
// copy the data to the packet buffer.
- result = read_data(mms, buf, size);
+ result = ff_mms_read_data(mms, buf, size);
if (result == 0) {
- dprintf(NULL, "read asf media paket size is zero!\n");
+ av_dlog(NULL, "Read ASF media packet size is zero!\n");
break;
}
}
} else {
- dprintf(NULL, "read packet error!\n");
+ av_dlog(NULL, "read packet error!\n");
break;
}
}
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,
};