[xcode] Merge avio_evbuffer into transcode

Only used by transcode anyway. Makes it easier to add custom seek for evbuffer.
This commit is contained in:
ejurgensen 2021-04-06 11:44:55 +02:00
parent b058f47ffb
commit 57449a126a
4 changed files with 108 additions and 158 deletions

View File

@ -113,7 +113,6 @@ owntone_SOURCES = main.c \
library.c library.h \
$(MDNS_SRC) mdns.h \
remote_pairing.c remote_pairing.h \
avio_evbuffer.c avio_evbuffer.h \
httpd.c httpd.h \
httpd_rsp.c httpd_rsp.h \
httpd_daap.c httpd_daap.h \

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@ -1,140 +0,0 @@
/*
* Copyright (C) 2011 Julien BLACHE <jb@jblache.org>
*
* 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, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <stdlib.h>
#include <libavformat/avformat.h>
#include "logger.h"
#include "avio_evbuffer.h"
/*
* libav AVIO interface for evbuffers
*/
#define BUFFER_SIZE 4096
struct avio_evbuffer {
struct evbuffer *evbuf;
uint8_t *buffer;
};
static int
avio_evbuffer_read(void *opaque, uint8_t *buf, int size)
{
struct avio_evbuffer *ae;
int ret;
ae = (struct avio_evbuffer *)opaque;
ret = evbuffer_remove(ae->evbuf, buf, size);
// Must return AVERROR, see avio.h: avio_alloc_context()
return (ret > 0) ? ret : AVERROR_EOF;
}
static int
avio_evbuffer_write(void *opaque, uint8_t *buf, int size)
{
struct avio_evbuffer *ae;
int ret;
ae = (struct avio_evbuffer *)opaque;
ret = evbuffer_add(ae->evbuf, buf, size);
return (ret == 0) ? size : -1;
}
static AVIOContext *
avio_evbuffer_open(struct evbuffer *evbuf, int is_output)
{
struct avio_evbuffer *ae;
AVIOContext *s;
ae = (struct avio_evbuffer *)malloc(sizeof(struct avio_evbuffer));
if (!ae)
{
DPRINTF(E_LOG, L_FFMPEG, "Out of memory for avio_evbuffer\n");
return NULL;
}
ae->buffer = av_mallocz(BUFFER_SIZE);
if (!ae->buffer)
{
DPRINTF(E_LOG, L_FFMPEG, "Out of memory for avio buffer\n");
free(ae);
return NULL;
}
ae->evbuf = evbuf;
if (is_output)
s = avio_alloc_context(ae->buffer, BUFFER_SIZE, 1, ae, NULL, avio_evbuffer_write, NULL);
else
s = avio_alloc_context(ae->buffer, BUFFER_SIZE, 0, ae, avio_evbuffer_read, NULL, NULL);
if (!s)
{
DPRINTF(E_LOG, L_FFMPEG, "Could not allocate AVIOContext\n");
av_free(ae->buffer);
free(ae);
return NULL;
}
s->seekable = 0;
return s;
}
AVIOContext *
avio_input_evbuffer_open(struct evbuffer *evbuf)
{
return avio_evbuffer_open(evbuf, 0);
}
AVIOContext *
avio_output_evbuffer_open(struct evbuffer *evbuf)
{
return avio_evbuffer_open(evbuf, 1);
}
void
avio_evbuffer_close(AVIOContext *s)
{
struct avio_evbuffer *ae;
if (!s)
return;
ae = (struct avio_evbuffer *)s->opaque;
avio_flush(s);
av_free(s->buffer);
free(ae);
av_free(s);
}

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@ -1,16 +0,0 @@
#ifndef __AVIO_EVBUFFER_H__
#define __AVIO_EVBUFFER_H__
#include <event2/buffer.h>
AVIOContext *
avio_input_evbuffer_open(struct evbuffer *evbuf);
AVIOContext *
avio_output_evbuffer_open(struct evbuffer *evbuf);
void
avio_evbuffer_close(AVIOContext *s);
#endif /* !__AVIO_EVBUFFER_H__ */

View File

@ -39,7 +39,6 @@
#include "logger.h"
#include "conffile.h"
#include "db.h"
#include "avio_evbuffer.h"
#include "misc.h"
#include "transcode.h"
@ -51,6 +50,8 @@
#define MAX_BAD_PACKETS 5
// How long to wait (in microsec) before interrupting av_read_frame
#define READ_TIMEOUT 30000000
// Buffer size for reading/writing input and output evbuffers
#define AVIO_BUFFER_SIZE 4096
static const char *default_codecs = "mpeg,wav";
static const char *roku_codecs = "mpeg,mp4a,wma,alac,wav";
@ -184,6 +185,12 @@ enum probe_type
PROBE_TYPE_QUICK,
};
struct avio_evbuffer {
struct evbuffer *evbuf;
uint8_t *buffer;
};
/* -------------------------- PROFILE CONFIGURATION ------------------------ */
static int
@ -776,6 +783,106 @@ read_decode_filter_encode_write(struct transcode_ctx *ctx)
return ret;
}
/* ------------------------------- CUSTOM I/O ------------------------------ */
/* For using ffmpeg with evbuffer input/output instead of files */
static int
avio_evbuffer_read(void *opaque, uint8_t *buf, int size)
{
struct avio_evbuffer *ae = (struct avio_evbuffer *)opaque;
int ret;
ret = evbuffer_remove(ae->evbuf, buf, size);
// Must return AVERROR, see avio.h: avio_alloc_context()
return (ret > 0) ? ret : AVERROR_EOF;
}
static int
avio_evbuffer_write(void *opaque, uint8_t *buf, int size)
{
struct avio_evbuffer *ae = (struct avio_evbuffer *)opaque;
int ret;
ret = evbuffer_add(ae->evbuf, buf, size);
return (ret == 0) ? size : -1;
}
static AVIOContext *
avio_evbuffer_open(struct evbuffer *evbuf, int is_output)
{
struct avio_evbuffer *ae;
AVIOContext *s;
ae = calloc(1, sizeof(struct avio_evbuffer));
if (!ae)
{
DPRINTF(E_LOG, L_FFMPEG, "Out of memory for avio_evbuffer\n");
return NULL;
}
ae->buffer = av_mallocz(AVIO_BUFFER_SIZE);
if (!ae->buffer)
{
DPRINTF(E_LOG, L_FFMPEG, "Out of memory for avio buffer\n");
free(ae);
return NULL;
}
ae->evbuf = evbuf;
if (is_output)
s = avio_alloc_context(ae->buffer, AVIO_BUFFER_SIZE, 1, ae, NULL, avio_evbuffer_write, NULL);
else
s = avio_alloc_context(ae->buffer, AVIO_BUFFER_SIZE, 0, ae, avio_evbuffer_read, NULL, NULL);
if (!s)
{
DPRINTF(E_LOG, L_FFMPEG, "Could not allocate AVIOContext\n");
av_free(ae->buffer);
free(ae);
return NULL;
}
s->seekable = 0;
return s;
}
static AVIOContext *
avio_input_evbuffer_open(struct evbuffer *evbuf)
{
return avio_evbuffer_open(evbuf, 0);
}
static AVIOContext *
avio_output_evbuffer_open(struct evbuffer *evbuf)
{
return avio_evbuffer_open(evbuf, 1);
}
static void
avio_evbuffer_close(AVIOContext *s)
{
struct avio_evbuffer *ae;
if (!s)
return;
ae = (struct avio_evbuffer *)s->opaque;
avio_flush(s);
av_free(s->buffer);
free(ae);
av_free(s);
}
/* --------------------------- INPUT/OUTPUT INIT --------------------------- */