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/*
* Copyright (c) 2014 The WebM project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include <stdlib.h>
#include "./ivfenc.h"
#include "./video_writer.h"
#include "vpx/vpx_encoder.h"
struct VpxVideoWriterStruct {
VpxVideoInfo info;
FILE *file;
int frame_count;
};
static void write_header(FILE *file, const VpxVideoInfo *info,
int frame_count) {
struct vpx_codec_enc_cfg cfg;
cfg.g_w = info->frame_width;
cfg.g_h = info->frame_height;
cfg.g_timebase.num = info->time_base.numerator;
cfg.g_timebase.den = info->time_base.denominator;
ivf_write_file_header(file, &cfg, info->codec_fourcc, frame_count);
}
VpxVideoWriter *vpx_video_writer_open(const char *filename,
VpxContainer container,
const VpxVideoInfo *info) {
if (container == kContainerIVF) {
VpxVideoWriter *writer = NULL;
FILE *const file = fopen(filename, "wb");
if (!file) {
fprintf(stderr, "%s can't be written to.\n", filename);
return NULL;
}
writer = malloc(sizeof(*writer));
if (!writer) {
fprintf(stderr, "Can't allocate VpxVideoWriter.\n");
return NULL;
}
writer->frame_count = 0;
writer->info = *info;
writer->file = file;
write_header(writer->file, info, 0);
return writer;
}
fprintf(stderr, "VpxVideoWriter supports only IVF.\n");
return NULL;
}
void vpx_video_writer_close(VpxVideoWriter *writer) {
if (writer) {
// Rewriting frame header with real frame count
rewind(writer->file);
write_header(writer->file, &writer->info, writer->frame_count);
fclose(writer->file);
free(writer);
}
}
int vpx_video_writer_write_frame(VpxVideoWriter *writer, const uint8_t *buffer,
size_t size, int64_t pts) {
ivf_write_frame_header(writer->file, pts, size);
if (fwrite(buffer, 1, size, writer->file) != size) return 0;
++writer->frame_count;
return 1;
}