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/*****************************************************************
* gmerlin-avdecoder - a general purpose multimedia decoding library
*
* Copyright (c) 2001 - 2012 Members of the Gmerlin project
* gmerlin-general@lists.sourceforge.net
* http://gmerlin.sourceforge.net
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
* *****************************************************************/
#include <avdec_private.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <mms.h>
#define LOG_DOMAIN "in_mms"
typedef struct
{
bgav_mms_t * mms;
int buffer_size;
uint8_t * buffer_ptr;
uint8_t * buffer;
} mms_priv_t;
extern bgav_demuxer_t bgav_demuxer_asf;
static int open_mms(bgav_input_context_t * ctx, const char * url, char ** r)
{
uint8_t * header;
int header_len;
int num_streams;
int * stream_ids;
int i;
bgav_input_context_t * input;
bgav_track_t * track;
mms_priv_t * priv;
bgav_stream_t * s;
priv = calloc(1, sizeof(*priv));
ctx->priv = priv;
/* Open mms connection */
priv->mms = bgav_mms_open(ctx->opt, url);
if(!priv->mms)
goto fail;
/* Get Header and initialize demultiplexer */
header = bgav_mms_get_header(priv->mms, &header_len);
if(!header)
goto fail;
input = bgav_input_open_memory(header, header_len, ctx->opt);
ctx->demuxer = bgav_demuxer_create(ctx->b, &bgav_demuxer_asf, input);
if(!bgav_demuxer_start(ctx->demuxer))
{
gavl_log(GAVL_LOG_ERROR, LOG_DOMAIN,
"Initializing asf demuxer failed");
return 0;
}
/* Check, what streams we have */
track = ctx->demuxer->tt->cur;
num_streams = track->num_audio_streams + track->num_video_streams;
stream_ids = malloc(num_streams * sizeof(int));
for(i = 0; i < track->num_audio_streams; i++)
{
s = bgav_track_get_audio_stream(track, i);
stream_ids[i] = s->stream_id;
}
for(i = 0; i < track->num_video_streams; i++)
{
s = bgav_track_get_video_stream(track, i);
stream_ids[i + track->num_audio_streams] = s->stream_id;
}
bgav_mms_select_streams(priv->mms, stream_ids, num_streams);
free(stream_ids);
/* Set the input context of the demuxer */
// ctx->flags |= BGAV_INPUT_DO_BUFFER;
ctx->demuxer->input = ctx;
ctx->position = header_len;
bgav_input_destroy(input);
/* The demuxer might think he can seek, but that's not true */
ctx->demuxer->flags &= ~BGAV_DEMUXER_CAN_SEEK;
ctx->url = gavl_strdup(url);
return 1;
fail:
return 0;
}
#define __MIN(a, b) (((a)<(b))?(a):(b))
static int do_read(bgav_input_context_t* ctx,
uint8_t * buffer, int len, int block)
{
mms_priv_t * priv;
// int buffer_size;
// uint8_t * buffer_ptr;
// uint8_t * buffer;
int bytes_to_copy;
int bytes_read;
priv = ctx->priv;
bytes_read = 0;
while(bytes_read < len)
{
if(!priv->buffer_size)
{
priv->buffer = bgav_mms_read_data(priv->mms, &priv->buffer_size, block);
if(!priv->buffer)
return bytes_read;
priv->buffer_ptr = priv->buffer;
}
bytes_to_copy = __MIN(len - bytes_read, priv->buffer_size);
memcpy(buffer + bytes_read, priv->buffer_ptr, bytes_to_copy);
priv->buffer_ptr += bytes_to_copy;
priv->buffer_size -= bytes_to_copy;
bytes_read += bytes_to_copy;
}
return bytes_read;
}
static int read_mms(bgav_input_context_t* ctx,
uint8_t * buffer, int len)
{
return do_read(ctx, buffer, len, 1);
}
#if 0
static int read_mms_nonblock(bgav_input_context_t* ctx,
uint8_t * buffer, int len)
{
return do_read(ctx, buffer, len, 0);
}
#endif
static void close_mms(bgav_input_context_t * ctx)
{
mms_priv_t * mms;
mms = ctx->priv;
if(mms->mms)
bgav_mms_close(mms->mms);
free(mms);
}
const bgav_input_t bgav_input_mms =
{
.name = "mms (Windows Media)",
.open = open_mms,
.read = read_mms,
.close = close_mms
};
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