mirror of https://github.com/mpv-player/mpv
106 lines
2.7 KiB
C
106 lines
2.7 KiB
C
/*
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* This file is part of mpv.
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*
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* mpv is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* mpv is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with mpv. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <libavutil/common.h>
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#include "common/common.h"
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#include "stream.h"
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struct priv {
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bstr data;
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};
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static int fill_buffer(stream_t *s, char* buffer, int len)
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{
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struct priv *p = s->priv;
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bstr data = p->data;
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if (s->pos < 0 || s->pos > data.len)
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return 0;
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len = FFMIN(len, data.len - s->pos);
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memcpy(buffer, data.start + s->pos, len);
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return len;
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}
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static int seek(stream_t *s, int64_t newpos)
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{
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return 1;
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}
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static int control(stream_t *s, int cmd, void *arg)
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{
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struct priv *p = s->priv;
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if (cmd == STREAM_CTRL_GET_SIZE) {
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*(int64_t *)arg = p->data.len;
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return 1;
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}
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return STREAM_UNSUPPORTED;
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}
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static int open2(stream_t *stream, struct stream_open_args *args)
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{
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stream->fill_buffer = fill_buffer;
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stream->seek = seek;
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stream->seekable = true;
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stream->control = control;
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stream->read_chunk = 1024 * 1024;
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struct priv *p = talloc_zero(stream, struct priv);
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stream->priv = p;
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// Initial data
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bstr data = bstr0(stream->url);
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bool use_hex = bstr_eatstart0(&data, "hex://");
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if (!use_hex)
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bstr_eatstart0(&data, "memory://");
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if (args->special_arg)
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data = *(bstr *)args->special_arg;
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p->data = bstrdup(stream, data);
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if (use_hex && !bstr_decode_hex(stream, p->data, &p->data)) {
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MP_FATAL(stream, "Invalid data.\n");
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return STREAM_ERROR;
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}
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return STREAM_OK;
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}
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const stream_info_t stream_info_memory = {
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.name = "memory",
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.open2 = open2,
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.protocols = (const char*const[]){ "memory", "hex", NULL },
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};
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struct stream *stream_memory_open(struct mpv_global *global, void *data, int len)
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{
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assert(len >= 0);
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struct stream_open_args sargs = {
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.global = global,
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.url = "memory://",
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.flags = STREAM_READ | STREAM_SILENT,
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.sinfo = &stream_info_memory,
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.special_arg = &(bstr){data, len},
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};
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struct stream *s = NULL;
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stream_create_with_args(&sargs, &s);
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MP_HANDLE_OOM(s);
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return s;
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}
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