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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 "output/output.h"
#include "output/muxer.h"
struct MuxerContext {
MuxerPriv *data;
const Muxer *impl;
};
#define MAX_NUM_MUXERS 4
static const Muxer *muxers[MAX_NUM_MUXERS];
static unsigned num_muxers = 0;
#define register_muxer(impl) { \
extern const Muxer impl; \
assert(num_muxers < MAX_NUM_MUXERS); \
muxers[num_muxers++] = &impl; \
}
void init_muxers(void) {
register_muxer(null_muxer);
register_muxer(md5_muxer);
register_muxer(yuv_muxer);
register_muxer(y4m2_muxer);
}
static const char *find_extension(const char *const f) {
const size_t l = strlen(f);
if (l == 0) return NULL;
const char *const end = &f[l - 1], *step = end;
while ((*step >= 'a' && *step <= 'z') ||
(*step >= 'A' && *step <= 'Z') ||
(*step >= '0' && *step <= '9'))
{
step--;
}
return (step < end && step > f && *step == '.' && step[-1] != '/') ?
&step[1] : NULL;
}
int output_open(MuxerContext **const c_out,
const char *const name, const char *const filename,
const Dav1dPictureParameters *const p, const unsigned fps[2])
{
const Muxer *impl;
MuxerContext *c;
unsigned i;
int res;
if (name) {
for (i = 0; i < num_muxers; i++) {
if (!strcmp(muxers[i]->name, name)) {
impl = muxers[i];
break;
}
}
if (i == num_muxers) {
fprintf(stderr, "Failed to find muxer named \"%s\"\n", name);
return DAV1D_ERR(ENOPROTOOPT);
}
} else if (!strcmp(filename, "/dev/null")) {
impl = muxers[0];
} else {
const char *ext = find_extension(filename);
if (!ext) {
fprintf(stderr, "No extension found for file %s\n", filename);
return -1;
}
for (i = 0; i < num_muxers; i++) {
if (!strcmp(muxers[i]->extension, ext)) {
impl = muxers[i];
break;
}
}
if (i == num_muxers) {
fprintf(stderr, "Failed to find muxer for extension \"%s\"\n", ext);
return DAV1D_ERR(ENOPROTOOPT);
}
}
if (!(c = malloc(sizeof(MuxerContext) + impl->priv_data_size))) {
fprintf(stderr, "Failed to allocate memory\n");
return DAV1D_ERR(ENOMEM);
}
c->impl = impl;
c->data = (MuxerPriv *) &c[1];
if (impl->write_header && (res = impl->write_header(c->data, filename, p, fps)) < 0) {
free(c);
return res;
}
*c_out = c;
return 0;
}
int output_write(MuxerContext *const ctx, Dav1dPicture *const p) {
int res;
if ((res = ctx->impl->write_picture(ctx->data, p)) < 0)
return res;
return 0;
}
void output_close(MuxerContext *const ctx) {
if (ctx->impl->write_trailer)
ctx->impl->write_trailer(ctx->data);
free(ctx);
}
int output_verify(MuxerContext *const ctx, const char *const md5_str) {
int res = 0;
if (ctx->impl->verify)
res = ctx->impl->verify(ctx->data, md5_str);
free(ctx);
return res;
}
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