mirror of
https://github.com/mpv-player/mpv
synced 2024-12-18 12:55:16 +00:00
a4d487f5b2
Stop using it in most places, and prefer STREAM_CTRL_GET_SIZE. The advantage is that always the correct size will be used. There can be no doubt anymore whether the end_pos value is outdated (as it happens often with files that are being downloaded). Some streams still use end_pos. They don't change size, and it's easier to emulate STREAM_CTRL_GET_SIZE using end_pos, instead of adding a STREAM_CTRL_GET_SIZE implementation to these streams. Make sure int64_t is always used for STREAM_CTRL_GET_SIZE (it was uint64_t before). Remove the seek flags mess, and replace them with a seekable flag. Every stream must set it consistently now, and an assertion in stream.c checks this. Don't distinguish between streams that can only be forward or backwards seeked, since we have no such stream types.
82 lines
2.0 KiB
C
82 lines
2.0 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 modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (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 General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* 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 "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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switch(cmd) {
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case STREAM_CTRL_GET_SIZE:
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*(int64_t *)arg = p->data.len;
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return 1;
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case STREAM_CTRL_SET_CONTENTS: ;
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bstr *data = (bstr *)arg;
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talloc_free(p->data.start);
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p->data = bstrdup(s, *data);
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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 open_f(stream_t *stream, int mode)
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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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bstr_eatstart0(&data, "memory://");
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stream_control(stream, STREAM_CTRL_SET_CONTENTS, &data);
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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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.open = open_f,
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.protocols = (const char*[]){ "memory", NULL },
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};
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