diff options
author | Ronald S. Bultje <rsbultje@gmail.com> | 2010-08-21 19:04:41 +0000 |
---|---|---|
committer | Ronald S. Bultje <rsbultje@gmail.com> | 2010-08-21 19:04:41 +0000 |
commit | f5ea69b23522898b14b3ddf5acd6d1befcc9d0da (patch) | |
tree | d6389691f6e8531770e8b862475e38ee83858f69 | |
parent | c901f6ab6f21539912ed3162a46047650f72b37f (diff) | |
download | ffmpeg-f5ea69b23522898b14b3ddf5acd6d1befcc9d0da.tar.gz |
MMSH support, the most popular and widely used of all MMS variants. Written by
Zhentan Feng <spyfeng gmail com> as part of Google's Summer of Code program.
Originally committed as revision 24861 to svn://svn.ffmpeg.org/ffmpeg/trunk
-rw-r--r-- | MAINTAINERS | 2 | ||||
-rw-r--r-- | doc/protocols.texi | 9 | ||||
-rw-r--r-- | libavformat/Makefile | 1 | ||||
-rw-r--r-- | libavformat/allformats.c | 1 | ||||
-rw-r--r-- | libavformat/mmsh.c | 369 |
5 files changed, 381 insertions, 1 deletions
diff --git a/MAINTAINERS b/MAINTAINERS index 27222a8d75..8f7a9eefaf 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -286,7 +286,6 @@ Muxers/Demuxers: matroskaenc.c David Conrad metadata* Aurelien Jacobs mm.c Peter Ross - mmst.c Ronald S. Bultje mov.c Michael Niedermayer, Baptiste Coudurier movenc.c Michael Niedermayer, Baptiste Coudurier mpc.c Kostya Shishkov @@ -330,6 +329,7 @@ Muxers/Demuxers: Protocols: http.c Ronald S. Bultje + mms*.c Ronald S. Bultje udp.c Luca Abeni diff --git a/doc/protocols.texi b/doc/protocols.texi index de7a6ec2fa..87fa4c62c9 100644 --- a/doc/protocols.texi +++ b/doc/protocols.texi @@ -73,6 +73,15 @@ HTTP (Hyper Text Transfer Protocol). MMS (Microsoft Media Server) protocol over TCP. +@section mmsh + +MMS (Microsoft Media Server) protocol over HTTP. + +The required syntax is: +@example +mmsh://@var{server}[:@var{port}][/@var{app}][/@var{playpath}] +@end example + @section md5 MD5 output protocol. diff --git a/libavformat/Makefile b/libavformat/Makefile index ac664e6377..ab260a1bc5 100644 --- a/libavformat/Makefile +++ b/libavformat/Makefile @@ -292,6 +292,7 @@ OBJS+= avio.o aviobuf.o OBJS-$(CONFIG_FILE_PROTOCOL) += file.o OBJS-$(CONFIG_GOPHER_PROTOCOL) += gopher.o OBJS-$(CONFIG_HTTP_PROTOCOL) += http.o httpauth.o +OBJS-$(CONFIG_MMSH_PROTOCOL) += mmsh.o mms.o asf.o OBJS-$(CONFIG_MMST_PROTOCOL) += mmst.o mms.o asf.o OBJS-$(CONFIG_MD5_PROTOCOL) += md5proto.o OBJS-$(CONFIG_PIPE_PROTOCOL) += file.o diff --git a/libavformat/allformats.c b/libavformat/allformats.c index 53af15e32c..03702c3152 100644 --- a/libavformat/allformats.c +++ b/libavformat/allformats.c @@ -226,6 +226,7 @@ void av_register_all(void) REGISTER_PROTOCOL (FILE, file); REGISTER_PROTOCOL (GOPHER, gopher); REGISTER_PROTOCOL (HTTP, http); + REGISTER_PROTOCOL (MMSH, mmsh); REGISTER_PROTOCOL (MMST, mmst); REGISTER_PROTOCOL (MD5, md5); REGISTER_PROTOCOL (PIPE, pipe); diff --git a/libavformat/mmsh.c b/libavformat/mmsh.c new file mode 100644 index 0000000000..5a74d9b7ae --- /dev/null +++ b/libavformat/mmsh.c @@ -0,0 +1,369 @@ +/* + * MMS protocol over HTTP + * Copyright (c) 2010 Zhentan Feng <spyfeng at gmail dot com> + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +/* + * Reference + * Windows Media HTTP Streaming Protocol. + * http://msdn.microsoft.com/en-us/library/cc251059(PROT.10).aspx + */ + +#include <string.h> +#include "libavutil/intreadwrite.h" +#include "libavutil/avstring.h" +#include "libavformat/internal.h" +#include "mms.h" +#include "asf.h" +#include "http.h" + +#define CHUNK_HEADER_LENGTH 4 // 2bytes chunk type and 2bytes chunk length. +#define EXT_HEADER_LENGTH 8 // 4bytes sequence, 2bytes useless and 2bytes chunk length. + +// see Ref 2.2.1.8 +#define USERAGENT "User-Agent: NSPlayer/4.1.0.3856\r\n" +// see Ref 2.2.1.4.33 +// the guid value can be changed to any valid value. +#define CLIENTGUID "Pragma: xClientGUID={c77e7400-738a-11d2-9add-0020af0a3278}\r\n" + +// see Ref 2.2.3 for packet type define: +// chunk type contains 2 fields: Frame and PacketID. +// Frame is 0x24 or 0xA4(rarely), different PacketID indicates different packet type. +typedef enum { + CHUNK_TYPE_DATA = 0x4424, + CHUNK_TYPE_ASF_HEADER = 0x4824, + CHUNK_TYPE_END = 0x4524, + CHUNK_TYPE_STREAM_CHANGE = 0x4324, +} ChunkType; + +typedef struct { + MMSContext mms; + int request_seq; ///< request packet sequence + int chunk_seq; ///< data packet sequence +} MMSHContext; + +static int mmsh_close(URLContext *h) +{ + MMSHContext *mmsh = (MMSHContext *)h->priv_data; + MMSContext *mms = &mmsh->mms; + if (mms->mms_hd) + url_close(mms->mms_hd); + av_free(mms->streams); + av_free(mms->asf_header); + av_freep(&h->priv_data); + return 0; +} + +static ChunkType get_chunk_header(MMSHContext *mmsh, int *len) +{ + MMSContext *mms = &mmsh->mms; + uint8_t chunk_header[CHUNK_HEADER_LENGTH]; + uint8_t ext_header[EXT_HEADER_LENGTH]; + ChunkType chunk_type; + int chunk_len, res, ext_header_len; + + res = url_read_complete(mms->mms_hd, chunk_header, CHUNK_HEADER_LENGTH); + if (res != CHUNK_HEADER_LENGTH) { + av_log(NULL, AV_LOG_ERROR, "Read data packet header failed!\n"); + return AVERROR(EIO); + } + chunk_type = AV_RL16(chunk_header); + chunk_len = AV_RL16(chunk_header + 2); + + switch (chunk_type) { + case CHUNK_TYPE_END: + case CHUNK_TYPE_STREAM_CHANGE: + ext_header_len = 4; + break; + case CHUNK_TYPE_ASF_HEADER: + case CHUNK_TYPE_DATA: + ext_header_len = 8; + break; + default: + av_log(NULL, AV_LOG_ERROR, "Strange chunk type %d\n", chunk_type); + return AVERROR_INVALIDDATA; + } + + res = url_read_complete(mms->mms_hd, ext_header, ext_header_len); + if (res != ext_header_len) { + av_log(NULL, AV_LOG_ERROR, "Read ext header failed!\n"); + return AVERROR(EIO); + } + *len = chunk_len - ext_header_len; + if (chunk_type == CHUNK_TYPE_END || chunk_type == CHUNK_TYPE_DATA) + mmsh->chunk_seq = AV_RL32(ext_header); + return chunk_type; +} + +static int read_data_packet(MMSHContext *mmsh, const int len) +{ + MMSContext *mms = &mmsh->mms; + int res; + if (len > sizeof(mms->in_buffer)) { + av_log(NULL, AV_LOG_ERROR, + "Data packet length %d exceeds the in_buffer size %d\n", + len, sizeof(mms->in_buffer)); + return AVERROR(EIO); + } + res = url_read_complete(mms->mms_hd, mms->in_buffer, len); + dprintf(NULL, "Data packet len = %d\n", len); + if (res != len) { + av_log(NULL, AV_LOG_ERROR, "Read data packet failed!\n"); + return AVERROR(EIO); + } + if (len > mms->asf_packet_len) { + av_log(NULL, AV_LOG_ERROR, + "Chunk length %d exceed packet length %d\n",len, mms->asf_packet_len); + return AVERROR_INVALIDDATA; + } else { + memset(mms->in_buffer + len, 0, mms->asf_packet_len - len); // padding + } + mms->read_in_ptr = mms->in_buffer; + mms->remaining_in_len = mms->asf_packet_len; + return 0; +} + +static int get_http_header_data(MMSHContext *mmsh) +{ + MMSContext *mms = &mmsh->mms; + int res, len; + ChunkType chunk_type; + + for (;;) { + len = 0; + chunk_type = get_chunk_header(mmsh, &len); + if (chunk_type < 0) { + return chunk_type; + } else if (chunk_type == CHUNK_TYPE_ASF_HEADER){ + // get asf header and stored it + if (!mms->header_parsed) { + if (mms->asf_header) { + if (len != mms->asf_header_size) { + mms->asf_header_size = len; + dprintf(NULL, "Header len changed from %d to %d\n", + mms->asf_header_size, len); + av_freep(&mms->asf_header); + } + } + mms->asf_header = av_mallocz(len); + if (!mms->asf_header) { + return AVERROR(ENOMEM); + } + mms->asf_header_size = len; + } + if (len > mms->asf_header_size) { + av_log(NULL, AV_LOG_ERROR, + "Asf header packet len = %d exceed the asf header buf size %d\n", + len, mms->asf_header_size); + return AVERROR(EIO); + } + res = url_read_complete(mms->mms_hd, mms->asf_header, len); + if (res != len) { + av_log(NULL, AV_LOG_ERROR, + "Recv asf header data len %d != expected len %d\n", res, len); + return AVERROR(EIO); + } + mms->asf_header_size = len; + if (!mms->header_parsed) { + res = ff_mms_asf_header_parser(mms); + mms->header_parsed = 1; + return res; + } + } else if (chunk_type == CHUNK_TYPE_DATA) { + // read data packet and do padding + return read_data_packet(mmsh, len); + } else { + if (len) { + if (len > sizeof(mms->in_buffer)) { + av_log(NULL, AV_LOG_ERROR, + "Other packet len = %d exceed the in_buffer size %d\n", + len, sizeof(mms->in_buffer)); + return AVERROR(EIO); + } + res = url_read_complete(mms->mms_hd, mms->in_buffer, len); + if (res != len) { + av_log(NULL, AV_LOG_ERROR, "Read other chunk type data failed!\n"); + return AVERROR(EIO); + } else { + dprintf(NULL, "Skip chunk type %d \n", chunk_type); + continue; + } + } + } + } + return 0; +} + +static int mmsh_open(URLContext *h, const char *uri, int flags) +{ + int i, port, err; + char httpname[256], path[256], host[128], location[1024]; + char *stream_selection; + char headers[1024]; + MMSHContext *mmsh; + MMSContext *mms; + + mmsh = h->priv_data = av_mallocz(sizeof(MMSHContext)); + if (!h->priv_data) + return AVERROR(ENOMEM); + mmsh->request_seq = h->is_streamed = 1; + mms = &mmsh->mms; + av_strlcpy(location, uri, sizeof(location)); + + av_url_split(NULL, 0, NULL, 0, + host, sizeof(host), &port, path, sizeof(path), location); + if (port<0) + port = 80; // default mmsh protocol port + ff_url_join(httpname, sizeof(httpname), "http", NULL, host, port, path); + + if (url_alloc(&mms->mms_hd, httpname, URL_RDONLY) < 0) { + return AVERROR(EIO); + } + + snprintf(headers, sizeof(headers), + "Accept: */*\r\n" + USERAGENT + "Host: %s:%d\r\n" + "Pragma: no-cache,rate=1.000000,stream-time=0," + "stream-offset=0:0,request-context=%u,max-duration=0\r\n" + CLIENTGUID + "Connection: Close\r\n\r\n", + host, port, mmsh->request_seq++); + ff_http_set_headers(mms->mms_hd, headers); + + err = url_connect(mms->mms_hd); + if (err) { + goto fail; + } + err = get_http_header_data(mmsh); + if (err) { + av_log(NULL, AV_LOG_ERROR, "Get http header data failed!\n"); + goto fail; + } + + // close the socket and then reopen it for sending the second play request. + url_close(mms->mms_hd); + memset(headers, 0, sizeof(headers)); + if (url_alloc(&mms->mms_hd, httpname, URL_RDONLY) < 0) { + return AVERROR(EIO); + } + stream_selection = av_mallocz(mms->stream_num * 19 + 1); + if (!stream_selection) + return AVERROR(ENOMEM); + for (i = 0; i < mms->stream_num; i++) { + char tmp[20]; + err = snprintf(tmp, sizeof(tmp), "ffff:%d:0 ", mms->streams[i].id); + if (err < 0) + goto fail; + av_strlcat(stream_selection, tmp, mms->stream_num * 19 + 1); + } + // send play request + err = snprintf(headers, sizeof(headers), + "Accept: */*\r\n" + USERAGENT + "Host: %s:%d\r\n" + "Pragma: no-cache,rate=1.000000,request-context=%u\r\n" + "Pragma: xPlayStrm=1\r\n" + CLIENTGUID + "Pragma: stream-switch-count=%d\r\n" + "Pragma: stream-switch-entry=%s\r\n" + "Connection: Close\r\n\r\n", + host, port, mmsh->request_seq++, mms->stream_num, stream_selection); + av_freep(&stream_selection); + if (err < 0) { + av_log(NULL, AV_LOG_ERROR, "Build play request failed!\n"); + goto fail; + } + dprintf(NULL, "out_buffer is %s", headers); + ff_http_set_headers(mms->mms_hd, headers); + + err = url_connect(mms->mms_hd); + if (err) { + goto fail; + } + + err = get_http_header_data(mmsh); + if (err) { + av_log(NULL, AV_LOG_ERROR, "Get http header data failed!\n"); + goto fail; + } + + dprintf(NULL, "Connection successfully open\n"); + return 0; +fail: + av_freep(&stream_selection); + mmsh_close(h); + dprintf(NULL, "Connection failed with error %d\n", err); + return err; +} + +static int handle_chunk_type(MMSHContext *mmsh) +{ + MMSContext *mms = &mmsh->mms; + int res, len = 0; + ChunkType chunk_type; + chunk_type = get_chunk_header(mmsh, &len); + + switch (chunk_type) { + case CHUNK_TYPE_END: + mmsh->chunk_seq = 0; + av_log(NULL, AV_LOG_ERROR, "Stream ended!\n"); + return AVERROR(EIO); + case CHUNK_TYPE_STREAM_CHANGE: + mms->header_parsed = 0; + if (res = get_http_header_data(mmsh)) { + av_log(NULL, AV_LOG_ERROR,"Stream changed! Failed to get new header!\n"); + return res; + } + break; + case CHUNK_TYPE_DATA: + return read_data_packet(mmsh, len); + default: + av_log(NULL, AV_LOG_ERROR, "Recv other type packet %d\n", chunk_type); + return AVERROR_INVALIDDATA; + } + return 0; +} + +static int mmsh_read(URLContext *h, uint8_t *buf, int size) +{ + int res = 0; + MMSHContext *mmsh = h->priv_data; + MMSContext *mms = &mmsh->mms; + do { + if (mms->asf_header_read_size < mms->asf_header_size) { + // copy asf header into buffer + res = ff_mms_read_header(mms, buf, size); + } else { + if (!mms->remaining_in_len && (res = handle_chunk_type(mmsh))) + return res; + res = ff_mms_read_data(mms, buf, size); + } + } while (!res); + return res; +} + +URLProtocol mmsh_protocol = { + .name = "mmsh", + .url_open = mmsh_open, + .url_read = mmsh_read, + .url_write = NULL, + .url_seek = NULL, + .url_close = mmsh_close, +}; |