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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 "cli_config.h"
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "common/attributes.h"
#include "common/intops.h"
#include "output/output.h"
#include "output/muxer.h"
struct MuxerContext {
MuxerPriv *data;
const Muxer *impl;
int one_file_per_frame;
unsigned fps[2];
const char *filename;
int framenum;
};
extern const Muxer null_muxer;
extern const Muxer md5_muxer;
extern const Muxer xxh3_muxer;
extern const Muxer yuv_muxer;
extern const Muxer y4m2_muxer;
static const Muxer *muxers[] = {
&null_muxer,
&md5_muxer,
#if HAVE_XXHASH_H
&xxh3_muxer,
#endif
&yuv_muxer,
&y4m2_muxer,
NULL
};
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;
int name_offset = 0;
if (name) {
name_offset = 5 * !strncmp(name, "frame", 5);
for (i = 0; muxers[i]; i++) {
if (!strcmp(muxers[i]->name, &name[name_offset])) {
impl = muxers[i];
break;
}
}
if (!muxers[i]) {
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 *const ext = find_extension(filename);
if (!ext) {
fprintf(stderr, "No extension found for file %s\n", filename);
return -1;
}
for (i = 0; muxers[i]; i++) {
if (!strcmp(muxers[i]->extension, ext)) {
impl = muxers[i];
break;
}
}
if (!muxers[i]) {
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];
int have_num_pattern = 0;
for (const char *ptr = filename ? strchr(filename, '%') : NULL;
!have_num_pattern && ptr; ptr = strchr(ptr, '%'))
{
ptr++; // skip '%'
while (*ptr >= '0' && *ptr <= '9')
ptr++; // skip length indicators
have_num_pattern = *ptr == 'n';
}
c->one_file_per_frame = name_offset || (!name && have_num_pattern);
if (c->one_file_per_frame) {
c->fps[0] = fps[0];
c->fps[1] = fps[1];
c->filename = filename;
c->framenum = 0;
} else if (impl->write_header &&
(res = impl->write_header(c->data, filename, p, fps)) < 0)
{
free(c);
return res;
}
*c_out = c;
return 0;
}
static void safe_strncat(char *const dst, const int dst_len,
const char *const src, const int src_len)
{
if (!src_len) return;
const int dst_fill = (int) strlen(dst);
assert(dst_fill < dst_len);
const int to_copy = imin(src_len, dst_len - dst_fill - 1);
if (!to_copy) return;
memcpy(dst + dst_fill, src, to_copy);
dst[dst_fill + to_copy] = 0;
}
static void assemble_field(char *const dst, const int dst_len,
const char *const fmt, const int fmt_len,
const int field)
{
char fmt_copy[32];
assert(fmt[0] == '%');
fmt_copy[0] = '%';
if (fmt[1] >= '1' && fmt[1] <= '9') {
fmt_copy[1] = '0'; // pad with zeroes, not spaces
fmt_copy[2] = 0;
} else {
fmt_copy[1] = 0;
}
safe_strncat(fmt_copy, sizeof(fmt_copy), &fmt[1], fmt_len - 1);
safe_strncat(fmt_copy, sizeof(fmt_copy), "d", 1);
char tmp[32];
snprintf(tmp, sizeof(tmp), fmt_copy, field);
safe_strncat(dst, dst_len, tmp, (int) strlen(tmp));
}
static void assemble_filename(MuxerContext *const ctx, char *const filename,
const int filename_size,
const Dav1dPictureParameters *const p)
{
filename[0] = 0;
const int framenum = ctx->framenum++;
assert(ctx->filename);
const char *ptr = ctx->filename, *iptr;
while ((iptr = strchr(ptr, '%'))) {
safe_strncat(filename, filename_size, ptr, (int) (iptr - ptr));
ptr = iptr;
const char *iiptr = &iptr[1]; // skip '%'
while (*iiptr >= '0' && *iiptr <= '9')
iiptr++; // skip length indicators
switch (*iiptr) {
case 'w':
assemble_field(filename, filename_size, ptr, (int) (iiptr - ptr), p->w);
break;
case 'h':
assemble_field(filename, filename_size, ptr, (int) (iiptr - ptr), p->h);
break;
case 'n':
assemble_field(filename, filename_size, ptr, (int) (iiptr - ptr), framenum);
break;
default:
safe_strncat(filename, filename_size, "%", 1);
ptr = &iptr[1];
continue;
}
ptr = &iiptr[1];
}
safe_strncat(filename, filename_size, ptr, (int) strlen(ptr));
}
int output_write(MuxerContext *const ctx, Dav1dPicture *const p) {
int res;
if (ctx->one_file_per_frame && ctx->impl->write_header) {
char filename[1024];
assemble_filename(ctx, filename, sizeof(filename), &p->p);
res = ctx->impl->write_header(ctx->data, filename, &p->p, ctx->fps);
if (res < 0)
return res;
}
if ((res = ctx->impl->write_picture(ctx->data, p)) < 0)
return res;
if (ctx->one_file_per_frame && ctx->impl->write_trailer)
ctx->impl->write_trailer(ctx->data);
return 0;
}
void output_close(MuxerContext *const ctx) {
if (!ctx->one_file_per_frame && ctx->impl->write_trailer)
ctx->impl->write_trailer(ctx->data);
free(ctx);
}
int output_verify(MuxerContext *const ctx, const char *const md5_str) {
const int res = ctx->impl->verify ?
ctx->impl->verify(ctx->data, md5_str) : 0;
free(ctx);
return res;
}
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