81 строка
2.1 KiB
C
81 строка
2.1 KiB
C
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/*
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* Copyright (c) 2014 The WebM project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include <stdlib.h>
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#include "./ivfenc.h"
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#include "./video_writer.h"
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#include "vpx/vpx_encoder.h"
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struct VpxVideoWriterStruct {
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VpxVideoInfo info;
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FILE *file;
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int frame_count;
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};
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static void write_header(FILE *file, const VpxVideoInfo *info,
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int frame_count) {
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struct vpx_codec_enc_cfg cfg;
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cfg.g_w = info->frame_width;
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cfg.g_h = info->frame_height;
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cfg.g_timebase.num = info->time_base.numerator;
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cfg.g_timebase.den = info->time_base.denominator;
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ivf_write_file_header(file, &cfg, info->codec_fourcc, frame_count);
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}
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VpxVideoWriter *vpx_video_writer_open(const char *filename,
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VpxContainer container,
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const VpxVideoInfo *info) {
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if (container == kContainerIVF) {
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VpxVideoWriter *writer = NULL;
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FILE *const file = fopen(filename, "wb");
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if (!file)
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return NULL;
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writer = malloc(sizeof(*writer));
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if (!writer)
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return NULL;
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writer->frame_count = 0;
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writer->info = *info;
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writer->file = file;
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write_header(writer->file, info, 0);
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return writer;
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}
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return NULL;
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}
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void vpx_video_writer_close(VpxVideoWriter *writer) {
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if (writer) {
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// Rewriting frame header with real frame count
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rewind(writer->file);
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write_header(writer->file, &writer->info, writer->frame_count);
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fclose(writer->file);
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free(writer);
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}
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}
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int vpx_video_writer_write_frame(VpxVideoWriter *writer,
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const uint8_t *buffer, size_t size,
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int64_t pts) {
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ivf_write_frame_header(writer->file, pts, size);
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if (fwrite(buffer, 1, size, writer->file) != size)
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return 0;
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++writer->frame_count;
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return 1;
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}
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