63 строки
2.0 KiB
C
63 строки
2.0 KiB
C
/*
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* Copyright (c) 2013 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 "./ivfenc.h"
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#include "./tools_common.h"
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#include "vpx/vpx_encoder.h"
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#include "vpx_ports/mem_ops.h"
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void ivf_write_file_header(FILE *outfile,
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const struct vpx_codec_enc_cfg *cfg,
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unsigned int fourcc,
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int frame_cnt) {
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char header[32];
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if (cfg->g_pass != VPX_RC_ONE_PASS && cfg->g_pass != VPX_RC_LAST_PASS)
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return;
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header[0] = 'D';
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header[1] = 'K';
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header[2] = 'I';
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header[3] = 'F';
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mem_put_le16(header + 4, 0); /* version */
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mem_put_le16(header + 6, 32); /* headersize */
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mem_put_le32(header + 8, fourcc); /* four CC */
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mem_put_le16(header + 12, cfg->g_w); /* width */
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mem_put_le16(header + 14, cfg->g_h); /* height */
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mem_put_le32(header + 16, cfg->g_timebase.den); /* rate */
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mem_put_le32(header + 20, cfg->g_timebase.num); /* scale */
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mem_put_le32(header + 24, frame_cnt); /* length */
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mem_put_le32(header + 28, 0); /* unused */
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(void) fwrite(header, 1, 32, outfile);
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}
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void ivf_write_frame_header(FILE *outfile, const struct vpx_codec_cx_pkt *pkt) {
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char header[12];
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vpx_codec_pts_t pts;
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if (pkt->kind != VPX_CODEC_CX_FRAME_PKT)
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return;
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pts = pkt->data.frame.pts;
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mem_put_le32(header, (int)pkt->data.frame.sz);
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mem_put_le32(header + 4, pts & 0xFFFFFFFF);
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mem_put_le32(header + 8, pts >> 32);
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(void) fwrite(header, 1, 12, outfile);
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}
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void ivf_write_frame_size(FILE *outfile, size_t size) {
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char header[4];
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mem_put_le32(header, (int)size);
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(void) fwrite(header, 1, 4, outfile);
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}
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