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/*
* Copyright © 2018, VideoLAN and dav1d authors
* Copyright © 2018, Two Orioles, LLC
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "common/attributes.h"
#include "common/intops.h"
#include "input/input.h"
#include "input/demuxer.h"
struct DemuxerContext {
DemuxerPriv *data;
const Demuxer *impl;
uint64_t priv_data[];
};
extern const Demuxer ivf_demuxer;
extern const Demuxer annexb_demuxer;
extern const Demuxer section5_demuxer;
static const Demuxer *const demuxers[] = {
&ivf_demuxer,
&annexb_demuxer,
§ion5_demuxer,
NULL
};
int input_open(DemuxerContext **const c_out,
const char *const name, const char *const filename,
unsigned fps[2], unsigned *const num_frames, unsigned timebase[2])
{
const Demuxer *impl;
DemuxerContext *c;
int res, i;
if (name) {
for (i = 0; demuxers[i]; i++) {
if (!strcmp(demuxers[i]->name, name)) {
impl = demuxers[i];
break;
}
}
if (!demuxers[i]) {
fprintf(stderr, "Failed to find demuxer named \"%s\"\n", name);
return DAV1D_ERR(ENOPROTOOPT);
}
} else {
int probe_sz = 0;
for (i = 0; demuxers[i]; i++)
probe_sz = imax(probe_sz, demuxers[i]->probe_sz);
uint8_t *const probe_data = malloc(probe_sz);
if (!probe_data) {
fprintf(stderr, "Failed to allocate memory\n");
return DAV1D_ERR(ENOMEM);
}
FILE *f = fopen(filename, "rb");
if (!f) {
free(probe_data);
fprintf(stderr, "Failed to open input file %s: %s\n", filename, strerror(errno));
return errno ? DAV1D_ERR(errno) : DAV1D_ERR(EIO);
}
res = !!fread(probe_data, 1, probe_sz, f);
fclose(f);
if (!res) {
free(probe_data);
fprintf(stderr, "Failed to read probe data\n");
return errno ? DAV1D_ERR(errno) : DAV1D_ERR(EIO);
}
for (i = 0; demuxers[i]; i++) {
if (demuxers[i]->probe(probe_data)) {
impl = demuxers[i];
break;
}
}
free(probe_data);
if (!demuxers[i]) {
fprintf(stderr,
"Failed to probe demuxer for file %s\n",
filename);
return DAV1D_ERR(ENOPROTOOPT);
}
}
if (!(c = calloc(1, offsetof(DemuxerContext, priv_data) + impl->priv_data_size))) {
fprintf(stderr, "Failed to allocate memory\n");
return DAV1D_ERR(ENOMEM);
}
c->impl = impl;
c->data = (DemuxerPriv *) c->priv_data;
if ((res = impl->open(c->data, filename, fps, num_frames, timebase)) < 0) {
free(c);
return res;
}
*c_out = c;
return 0;
}
int input_read(DemuxerContext *const ctx, Dav1dData *const data) {
return ctx->impl->read(ctx->data, data);
}
int input_seek(DemuxerContext *const ctx, const uint64_t pts) {
return ctx->impl->seek ? ctx->impl->seek(ctx->data, pts) : -1;
}
void input_close(DemuxerContext *const ctx) {
ctx->impl->close(ctx->data);
free(ctx);
}
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