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/*
* This file is part of mpv.
*
* mpv 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.
*
* mpv 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 mpv. If not, see <http://www.gnu.org/licenses/>.
*/
#include "common/common.h"
#include "stream.h"
struct priv {
bstr data;
};
static int fill_buffer(stream_t *s, char* buffer, int len)
{
struct priv *p = s->priv;
bstr data = p->data;
if (s->pos < 0 || s->pos > data.len)
return 0;
len = MPMIN(len, data.len - s->pos);
memcpy(buffer, data.start + s->pos, len);
return len;
}
static int seek(stream_t *s, int64_t newpos)
{
return 1;
}
static int control(stream_t *s, int cmd, void *arg)
{
struct priv *p = s->priv;
if (cmd == STREAM_CTRL_GET_SIZE) {
*(int64_t *)arg = p->data.len;
return 1;
}
return STREAM_UNSUPPORTED;
}
static int open2(stream_t *stream, struct stream_open_args *args)
{
stream->fill_buffer = fill_buffer;
stream->seek = seek;
stream->seekable = true;
stream->control = control;
stream->read_chunk = 1024 * 1024;
struct priv *p = talloc_zero(stream, struct priv);
stream->priv = p;
// Initial data
bstr data = bstr0(stream->url);
bool use_hex = bstr_eatstart0(&data, "hex://");
if (!use_hex)
bstr_eatstart0(&data, "memory://");
if (args->special_arg)
data = *(bstr *)args->special_arg;
p->data = bstrdup(stream, data);
if (use_hex && !bstr_decode_hex(stream, p->data, &p->data)) {
MP_FATAL(stream, "Invalid data.\n");
return STREAM_ERROR;
}
return STREAM_OK;
}
const stream_info_t stream_info_memory = {
.name = "memory",
.open2 = open2,
.protocols = (const char*const[]){ "memory", "hex", NULL },
};
struct stream *stream_memory_open(struct mpv_global *global, void *data, int len)
{
assert(len >= 0);
struct stream_open_args sargs = {
.global = global,
.url = "memory://",
.flags = STREAM_READ | STREAM_SILENT,
.sinfo = &stream_info_memory,
.special_arg = &(bstr){data, len},
};
struct stream *s = NULL;
stream_create_with_args(&sargs, &s);
MP_HANDLE_OOM(s);
return s;
}
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