mirror of
https://github.com/mpv-player/mpv
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46 lines
1.5 KiB
C
46 lines
1.5 KiB
C
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/* Straightforward (to be) optimized JPEG encoder for the YUV422 format
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* based on mjpeg code from ffmpeg.
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*
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* Copyright (c) 2002, Rik Snel
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* Parts from ffmpeg Copyright (c) 2000, 2001 Gerard Lantau
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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* For an excellent introduction to the JPEG format, see:
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* http://www.ece.purdue.edu/~bourman/grad-labs/lab8/pdf/lab.pdf
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*/
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typedef struct {
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struct MpegEncContext *s;
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int cheap_upsample;
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int bw;
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int y_ps;
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int u_ps;
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int v_ps;
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int y_rs;
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int u_rs;
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int v_rs;
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} jpeg_enc_t;
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jpeg_enc_t *jpeg_enc_init(int w, int h, int y_psize, int y_rsize,
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int u_psize, int u_rsize, int v_psize, int v_rsize,
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int cu, int q, int b);
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int jpeg_enc_frame(jpeg_enc_t *j, unsigned char *y_data,
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unsigned char *u_data, unsigned char *v_data, char *bufr);
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void jpeg_enc_uninit(jpeg_enc_t *j);
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