mirror of https://github.com/mpv-player/mpv
Cosmetics and comments.
Patch by Karolina Lindqvist <karolina.lindqvist@kramnet.se> "This is the whitespace patch for vf_zrmjpeg.c with doxygen comments that I promised a while ago." Some additional whitespace fixes by me, there are no functional changes. git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@19957 b3059339-0415-0410-9bf9-f77b7e298cf2
This commit is contained in:
rik
parent
4bb03ad126
commit
830063b190
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@ -1,6 +1,12 @@
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/**
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* \file vf_zrmjpeg.c
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*
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* \brief Does mjpeg encoding as required by the zrmjpeg filter as well
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* as by the zr video driver.
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*/
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/*
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* Copyright (C) 2005 Rik Snel <rsnel@cube.dyndns.org>, license GPL v2
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* - based on vd_lavc.c by A'rpi (C) 2002-2003
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* - based on vd_lavc.c by A'rpi (C) 2002-2003
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* - parts from ffmpeg Copyright (c) 2000-2003 Fabrice Bellard
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*
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* This files includes a straightforward (to be) optimized JPEG encoder for
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@ -25,7 +31,7 @@
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#include "libvo/fastmemcpy.h"
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#endif
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/* We need this #define because we need ../libavcodec/common.h to #define
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/* We need this #define because we need ../libavcodec/common.h to #define
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* be2me_32, otherwise the linker will complain that it doesn't exist */
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#define HAVE_AV_CONFIG_H
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#include "libavcodec/avcodec.h"
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@ -40,15 +46,20 @@
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extern int avcodec_inited;
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/* some convenient #define's, is this portable enough? */
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/// Printout with vf_zrmjpeg: prefix at VERBOSE level
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#define VERBOSE(...) mp_msg(MSGT_DECVIDEO, MSGL_V, "vf_zrmjpeg: " __VA_ARGS__)
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/// Printout with vf_zrmjpeg: prefix at ERROR level
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#define ERROR(...) mp_msg(MSGT_DECVIDEO, MSGL_ERR, "vf_zrmjpeg: " __VA_ARGS__)
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/// Printout with vf_zrmjpeg: prefix at WARNING level
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#define WARNING(...) mp_msg(MSGT_DECVIDEO, MSGL_WARN, \
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"vf_zrmjpeg: " __VA_ARGS__)
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// "local" flag in vd_ffmpeg.c. If not set, avcodec_init() et. al. need to be called
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// set when init is done, so that initialization is not done twice.
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extern int avcodec_inited;
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/* zrmjpeg_encode_mb needs access to these tables for the black & white
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/// structure copied from mjpeg.c
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/* zrmjpeg_encode_mb needs access to these tables for the black & white
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* option */
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typedef struct MJpegContext {
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uint8_t huff_size_dc_luminance[12];
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@ -62,14 +73,15 @@ typedef struct MJpegContext {
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uint16_t huff_code_ac_chrominance[256];
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} MJpegContext;
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// The get_pixels routine to use. The real routine comes from dsputil
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/// The get_pixels() routine to use. The real routine comes from dsputil
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static void (*get_pixels)(DCTELEM *restrict block, const uint8_t *pixels, int line_size);
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/* Begin excessive code duplication ************************************/
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/* Code coming from mpegvideo.c and mjpeg.c in ../libavcodec ***********/
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/// copy of the table in mpegvideo.c
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static const unsigned short aanscales[64] = {
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/* precomputed values scaled up by 14 bits */
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/**< precomputed values scaled up by 14 bits */
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16384, 22725, 21407, 19266, 16384, 12873, 8867, 4520,
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22725, 31521, 29692, 26722, 22725, 17855, 12299, 6270,
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21407, 29692, 27969, 25172, 21407, 16819, 11585, 5906,
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@ -80,69 +92,94 @@ static const unsigned short aanscales[64] = {
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4520, 6270, 5906, 5315, 4520, 3552, 2446, 1247
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};
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/*
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* This routine is like the routine with the same name in mjpeg.c,
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* except for some coefficient changes.
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/// Precompute DCT quantizing matrix
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/**
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* This routine will precompute the combined DCT matrix with qscale
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* and DCT renorm needed by the MPEG encoder here. It is basically the
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* same as the routine with the same name in mpegvideo.c, except for
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* some coefficient changes. The matrix will be computed in two variations,
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* depending on the DCT version used. The second used by the MMX version of DCT.
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*
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* \param s MpegEncContext pointer
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* \param qmat[OUT] pointer to where the matrix is stored
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* \param qmat16[OUT] pointer to where matrix for MMX is stored.
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* This matrix is not permutated
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* and second 64 entries are bias
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* \param quant_matrix[IN] the quantizion matrix to use
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* \param bias bias for the quantizer
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* \param qmin minimum qscale value to set up for
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* \param qmax maximum qscale value to set up for
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*
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* Only rows between qmin and qmax will be populated in the matrix.
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* In this MJPEG encoder, only the value 8 for qscale is used.
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*/
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static void convert_matrix(MpegEncContext *s, int (*qmat)[64],
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static void convert_matrix(MpegEncContext *s, int (*qmat)[64],
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uint16_t (*qmat16)[2][64], const uint16_t *quant_matrix,
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int bias, int qmin, int qmax) {
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int qscale;
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int qscale;
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for(qscale = qmin; qscale <= qmax; qscale++) {
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int i;
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int i;
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if (s->dsp.fdct == ff_jpeg_fdct_islow) {
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for (i = 0; i < 64; i++) {
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const int j = s->dsp.idct_permutation[i];
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/* 16 <= qscale * quant_matrix[i] <= 7905
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* 19952 <= aanscales[i] * qscale * quant_matrix[i] <= 249205026
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* (1<<36)/19952 >= (1<<36)/(aanscales[i] * qscale * quant_matrix[i])
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/* 16 <= qscale * quant_matrix[i] <= 7905
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* 19952 <= aanscales[i] * qscale * quant_matrix[i] <= 249205026
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* (1<<36)/19952 >= (1<<36)/(aanscales[i] * qscale * quant_matrix[i])
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* >= (1<<36)/249205026
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* 3444240 >= (1<<36)/(aanscales[i] * qscale * quant_matrix[i]) >= 275 */
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qmat[qscale][i] = (int)((UINT64_C(1) <<
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qmat[qscale][i] = (int)((UINT64_C(1) <<
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(QMAT_SHIFT-3))/
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(qscale*quant_matrix[j]));
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}
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} else if (s->dsp.fdct == fdct_ifast) {
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for (i = 0; i < 64; i++) {
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const int j = s->dsp.idct_permutation[i];
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/* 16 <= qscale * quant_matrix[i] <= 7905
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* 19952 <= aanscales[i] * qscale * quant_matrix[i] <= 249205026
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* (1<<36)/19952 >= (1<<36)/(aanscales[i] * qscale * quant_matrix[i])
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for (i = 0; i < 64; i++) {
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const int j = s->dsp.idct_permutation[i];
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/* 16 <= qscale * quant_matrix[i] <= 7905
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* 19952 <= aanscales[i] * qscale * quant_matrix[i] <= 249205026
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* (1<<36)/19952 >= (1<<36)/(aanscales[i] * qscale * quant_matrix[i])
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* >= (1<<36)/249205026
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* 3444240 >= (1<<36)/(aanscales[i] * qscale * quant_matrix[i]) >= 275 */
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qmat[qscale][i] = (int)((UINT64_C(1) <<
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qmat[qscale][i] = (int)((UINT64_C(1) <<
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(QMAT_SHIFT + 11))/(aanscales[i]
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*qscale * quant_matrix[j]));
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}
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} else {
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for (i = 0; i < 64; i++) {
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}
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} else {
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for (i = 0; i < 64; i++) {
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const int j = s->dsp.idct_permutation[i];
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/* We can safely assume that 16 <= quant_matrix[i] <= 255
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* So 16 <= qscale * quant_matrix[i] <= 7905
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* so (1<<19) / 16 >= (1<<19) / (qscale * quant_matrix[i]) >= (1<<19) / 7905
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* so 32768 >= (1<<19) / (qscale * quant_matrix[i]) >= 67 */
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qmat[qscale][i] = (int)((uint64_t_C(1) <<
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QMAT_SHIFT_MMX) / (qscale
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qmat[qscale][i] = (int)((uint64_t_C(1) <<
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QMAT_SHIFT_MMX) / (qscale
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*quant_matrix[j]));
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qmat16[qscale][0][i] = (1 << QMAT_SHIFT_MMX)
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qmat16[qscale][0][i] = (1 << QMAT_SHIFT_MMX)
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/(qscale * quant_matrix[j]);
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if (qmat16[qscale][0][i] == 0 ||
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if (qmat16[qscale][0][i] == 0 ||
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qmat16[qscale][0][i] == 128*256)
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qmat16[qscale][0][i]=128*256-1;
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qmat16[qscale][1][i]=ROUNDED_DIV(bias
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<<(16-QUANT_BIAS_SHIFT),
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qmat16[qscale][1][i]=ROUNDED_DIV(bias
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<<(16-QUANT_BIAS_SHIFT),
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qmat16[qscale][0][i]);
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}
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}
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}
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}
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}
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}
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}
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/*
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/// Emit the DC value into a MJPEG code sream
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/**
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* This routine is only intended to be used from encode_block
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*
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* \param s pointer to MpegEncContext structure
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* \param val the DC value to emit
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* \param huff_size pointer to huffman code size array
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* \param huff_code pointer to the code array corresponding to \a huff_size
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*
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* This routine is a clone of mjpeg_encode_dc
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*/
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static inline void encode_dc(MpegEncContext *s, int val,
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static inline void encode_dc(MpegEncContext *s, int val,
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uint8_t *huff_size, uint16_t *huff_code) {
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int mant, nbits;
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@ -160,7 +197,12 @@ static inline void encode_dc(MpegEncContext *s, int val,
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}
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}
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/*
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/// Huffman encode and emit one DCT block into the MJPEG code stream
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/**
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* \param s pointer to MpegEncContext structure
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* \param block pointer to the DCT block to emit
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* \param n
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*
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* This routine is a duplicate of encode_block in mjpeg.c
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*/
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static void encode_block(MpegEncContext *s, DCTELEM *block, int n) {
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@ -169,60 +211,72 @@ static void encode_block(MpegEncContext *s, DCTELEM *block, int n) {
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MJpegContext *m = s->mjpeg_ctx;
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uint8_t *huff_size_ac;
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uint16_t *huff_code_ac;
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/* DC coef */
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component = (n <= 3 ? 0 : n - 4 + 1);
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dc = block[0]; /* overflow is impossible */
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val = dc - s->last_dc[component];
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if (n < 4) {
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encode_dc(s, val, m->huff_size_dc_luminance,
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if (n < 4) {
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encode_dc(s, val, m->huff_size_dc_luminance,
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m->huff_code_dc_luminance);
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huff_size_ac = m->huff_size_ac_luminance;
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huff_code_ac = m->huff_code_ac_luminance;
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} else {
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encode_dc(s, val, m->huff_size_dc_chrominance,
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encode_dc(s, val, m->huff_size_dc_chrominance,
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m->huff_code_dc_chrominance);
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huff_size_ac = m->huff_size_ac_chrominance;
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huff_code_ac = m->huff_code_ac_chrominance;
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}
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s->last_dc[component] = dc;
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/* AC coefs */
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run = 0;
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last_index = s->block_last_index[n];
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for (i = 1; i <= last_index; i++) {
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j = s->intra_scantable.permutated[i];
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val = block[j];
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if (val == 0) run++;
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else {
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else {
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while (run >= 16) {
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put_bits(&s->pb, huff_size_ac[0xf0],
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put_bits(&s->pb, huff_size_ac[0xf0],
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huff_code_ac[0xf0]);
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run -= 16;
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}
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mant = val;
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mant = val;
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if (val < 0) {
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val = -val;
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mant--;
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}
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mant--;
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}
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nbits= av_log2_16bit(val) + 1;
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code = (run << 4) | nbits;
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put_bits(&s->pb, huff_size_ac[code],
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put_bits(&s->pb, huff_size_ac[code],
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huff_code_ac[code]);
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put_bits(&s->pb, nbits, mant & ((1 << nbits) - 1));
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run = 0;
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}
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}
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put_bits(&s->pb, nbits, mant & ((1 << nbits) - 1));
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run = 0;
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}
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}
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/* output EOB only if not already 64 values */
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/* output EOB only if not already 64 values */
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if (last_index < 63 || run != 0)
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put_bits(&s->pb, huff_size_ac[0], huff_code_ac[0]);
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}
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static inline void clip_coeffs(MpegEncContext *s, DCTELEM *block,
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/// clip overflowing DCT coefficients
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/**
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* If the computed DCT coefficients in a block overflow, this routine
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* will go through them and clip them to be in the valid range.
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*
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* \param s pointer to MpegEncContext
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* \param block pointer to DCT block to process
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* \param last_index index of the last non-zero coefficient in block
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*
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* The max and min level, which are clipped to, are stored in
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* s->min_qcoeff and s->max_qcoeff respectively.
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*/
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static inline void clip_coeffs(MpegEncContext *s, DCTELEM *block,
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int last_index) {
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int i;
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const int maxlevel= s->max_qcoeff;
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@ -231,7 +285,7 @@ static inline void clip_coeffs(MpegEncContext *s, DCTELEM *block,
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for (i = 0; i <= last_index; i++) {
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const int j = s->intra_scantable.permutated[i];
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int level = block[j];
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if (level > maxlevel) level=maxlevel;
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else if(level < minlevel) level=minlevel;
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block[j]= level;
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@ -249,10 +303,18 @@ typedef struct {
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int v_rs;
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} jpeg_enc_t;
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/* this function is a reproduction of the one in mjpeg, it includes two
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// Huffman encode and emit one MCU of MJPEG code
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/**
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* \param j pointer to jpeg_enc_t structure
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*
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* This function huffman encodes one MCU, and emits the
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* resulting bitstream into the MJPEG code that is currently worked on.
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*
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* this function is a reproduction of the one in mjpeg, it includes two
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* changes, it allows for black&white encoding (it skips the U and V
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* macroblocks and it outputs the huffman code for 'no change' (dc) and
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* 'all zero' (ac)) and it takes 4 macroblocks (422) instead of 6 (420) */
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* 'all zero' (ac)) and it takes 4 macroblocks (422) instead of 6 (420)
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*/
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static always_inline void zr_mjpeg_encode_mb(jpeg_enc_t *j) {
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MJpegContext *m = j->s->mjpeg_ctx;
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@ -270,18 +332,27 @@ static always_inline void zr_mjpeg_encode_mb(jpeg_enc_t *j) {
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m->huff_code_dc_chrominance[0]);
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put_bits(&j->s->pb, m->huff_size_ac_chrominance[0],
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m->huff_code_ac_chrominance[0]);
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} else {
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} else {
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/* we trick encode_block here so that it uses
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* chrominance huffman tables instead of luminance ones
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* chrominance huffman tables instead of luminance ones
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* (see the effect of second argument of encode_block) */
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encode_block(j->s, j->s->block[2], 4);
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encode_block(j->s, j->s->block[2], 4);
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encode_block(j->s, j->s->block[3], 5);
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}
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}
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}
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/*
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* Taking one MCU (YUYV) from 8-bit pixel planar storage and
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* filling it into four 16-bit pixel DCT macroblocks.
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/// Fill one DCT MCU from planar storage
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/**
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* This routine will convert one MCU from YUYV planar storage into 4
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* DCT macro blocks, converting from 8-bit format in the planar
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* storage to 16-bit format used in the DCT.
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*
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* \param j pointer to jpeg_enc structure, and also storage for DCT macro blocks
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* \param x pixel x-coordinate for the first pixel
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* \param y pixel y-coordinate for the first pixel
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* \param y_data pointer to the Y plane
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* \param u_data pointer to the U plane
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* \param v_data pointer to the V plane
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*/
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static always_inline void fill_block(jpeg_enc_t *j, int x, int y,
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unsigned char *y_data, unsigned char *u_data,
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@ -326,29 +397,37 @@ static always_inline void fill_block(jpeg_enc_t *j, int x, int y,
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}
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}
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/* this function can take all kinds of YUV colorspaces
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* YV12, YVYU, UYVY. The necesary parameters must be set up by the caller
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* y_rs means "y row size".
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* For YUYV, for example, is u_buf = y_buf + 1, v_buf = y_buf + 3,
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* y_rs = u_rs = v_rs.
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/**
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* \brief initialize mjpeg encoder
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*
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* The actual buffers must be passed with mjpeg_encode_frame, this is
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* to make it possible to call encode on the buffer provided by the
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* codec in draw_frame.
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*
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* The data is straightened out at the moment it is put in DCT
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* blocks, there are therefore no spurious memcopies involved */
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/* Notice that w must be a multiple of 16 and h must be a multiple of 8 */
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/* We produce YUV422 jpegs, the colors must be subsampled horizontally,
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* if the colors are also subsampled vertically, then this function
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* performs cheap upsampling (better solution will be: a DCT that is
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* optimized in the case that every two rows are the same) */
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/* cu = 0 means 'No cheap upsampling'
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* cu = 1 means 'perform cheap upsampling' */
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/* The encoder doesn't know anything about interlacing, the halve height
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* This routine is to set up the parameters and initialize the mjpeg encoder.
|
||||
* It does all the initializations needed of lower level routines.
|
||||
* The formats accepted by this encoder is YUV422P and YUV420
|
||||
*
|
||||
* \param w width in pixels of the image to encode, must be a multiple of 16
|
||||
* \param h height in pixels of the image to encode, must be a multiple of 8
|
||||
* \param y_rsize size of each plane row Y component
|
||||
* \param y_rsize size of each plane row U component
|
||||
* \param v_rsize size of each plane row V component
|
||||
* \param cu "cheap upsample". Set to 0 for YUV422 format, 1 for YUV420 format
|
||||
* when set to 1, the encoder will assume that there is only half th
|
||||
* number of rows of chroma information, and every chroma row is
|
||||
* duplicated.
|
||||
* \param q quality parameter for the mjpeg encode. Between 1 and 20 where 1
|
||||
* is best quality and 20 is the worst quality.
|
||||
* \param b monochrome flag. When set to 1, the mjpeg output is monochrome.
|
||||
* In that case, the colour information is omitted, and actually the
|
||||
* colour planes are not touched.
|
||||
*
|
||||
* \returns an appropriately set up jpeg_enc_t structure
|
||||
*
|
||||
* The actual plane buffer addreses are passed by jpeg_enc_frame().
|
||||
*
|
||||
* The encoder doesn't know anything about interlacing, the halve height
|
||||
* needs to be passed and the double rowstride. Which field gets encoded
|
||||
* is decided by what buffers are passed to mjpeg_encode_frame */
|
||||
static jpeg_enc_t *jpeg_enc_init(int w, int h, int y_rsize,
|
||||
* is decided by what buffers are passed to mjpeg_encode_frame()
|
||||
*/
|
||||
static jpeg_enc_t *jpeg_enc_init(int w, int h, int y_rsize,
|
||||
int u_rsize, int v_rsize,
|
||||
int cu, int q, int b) {
|
||||
jpeg_enc_t *j;
|
||||
|
|
@ -366,8 +445,8 @@ static jpeg_enc_t *jpeg_enc_init(int w, int h, int y_rsize,
|
|||
}
|
||||
|
||||
/* info on how to access the pixels */
|
||||
j->y_rs = y_rsize;
|
||||
j->u_rs = u_rsize;
|
||||
j->y_rs = y_rsize;
|
||||
j->u_rs = u_rsize;
|
||||
j->v_rs = v_rsize;
|
||||
|
||||
j->s->width = w; // image width and height
|
||||
|
|
@ -382,13 +461,21 @@ static jpeg_enc_t *jpeg_enc_init(int w, int h, int y_rsize,
|
|||
j->s->y_dc_scale = 8;
|
||||
j->s->c_dc_scale = 8;
|
||||
|
||||
/*
|
||||
* This sets up the MCU (Minimal Code Unit) number
|
||||
* of appearances of the various component
|
||||
* for the SOF0 table in the generated MJPEG.
|
||||
* The values are not used for anything else.
|
||||
* The current setup is simply YUV422, with two horizontal Y components
|
||||
* for every UV component.
|
||||
*/
|
||||
j->s->mjpeg_write_tables = 1; // setup to write tables
|
||||
j->s->mjpeg_vsample[0] = 1;
|
||||
j->s->mjpeg_vsample[1] = 1;
|
||||
j->s->mjpeg_vsample[2] = 1;
|
||||
j->s->mjpeg_hsample[0] = 2;
|
||||
j->s->mjpeg_hsample[1] = 1;
|
||||
j->s->mjpeg_hsample[2] = 1;
|
||||
j->s->mjpeg_vsample[0] = 1; // 1 appearance of Y vertically
|
||||
j->s->mjpeg_vsample[1] = 1; // 1 appearance of U vertically
|
||||
j->s->mjpeg_vsample[2] = 1; // 1 appearance of V vertically
|
||||
j->s->mjpeg_hsample[0] = 2; // 2 appearances of Y horizontally
|
||||
j->s->mjpeg_hsample[1] = 1; // 1 appearance of U horizontally
|
||||
j->s->mjpeg_hsample[2] = 1; // 1 appearance of V horizontally
|
||||
|
||||
j->cheap_upsample = cu;
|
||||
j->bw = b;
|
||||
|
|
@ -403,6 +490,7 @@ static jpeg_enc_t *jpeg_enc_init(int w, int h, int y_rsize,
|
|||
avcodec_inited=1;
|
||||
}
|
||||
|
||||
// Build mjpeg huffman code tables, setting up j->s->mjpeg_ctx
|
||||
if (mjpeg_init(j->s) < 0) {
|
||||
av_free(j->s);
|
||||
av_free(j);
|
||||
|
|
@ -418,36 +506,67 @@ static jpeg_enc_t *jpeg_enc_init(int w, int h, int y_rsize,
|
|||
}
|
||||
|
||||
// Set some a minimum amount of default values that are needed
|
||||
// Indicates that we should generated normal MJPEG
|
||||
j->s->avctx->codec_id = CODEC_ID_MJPEG;
|
||||
// Which DCT method to use. AUTO will select the fastest one
|
||||
j->s->avctx->dct_algo = FF_DCT_AUTO;
|
||||
j->s->intra_quant_bias= 1<<(QUANT_BIAS_SHIFT-1); //(a + x/2)/x
|
||||
|
||||
j->s->avctx->thread_count = 1;
|
||||
|
||||
/* make MPV_common_init allocate important buffers, like s->block */
|
||||
/* make MPV_common_init allocate important buffers, like s->block
|
||||
* Also initializes dsputil */
|
||||
if (MPV_common_init(j->s) < 0) {
|
||||
av_free(j->s);
|
||||
av_free(j);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
/* correct the value for sc->mb_height */
|
||||
/* correct the value for sc->mb_height. MPV_common_init put other
|
||||
* values there */
|
||||
j->s->mb_height = j->s->height/8;
|
||||
j->s->mb_intra = 1;
|
||||
|
||||
// Init q matrix
|
||||
j->s->intra_matrix[0] = ff_mpeg1_default_intra_matrix[0];
|
||||
for (i = 1; i < 64; i++)
|
||||
for (i = 1; i < 64; i++)
|
||||
j->s->intra_matrix[i] = clip_uint8(
|
||||
(ff_mpeg1_default_intra_matrix[i]*j->s->qscale) >> 3);
|
||||
|
||||
// precompute matrix
|
||||
convert_matrix(j->s, j->s->q_intra_matrix, j->s->q_intra_matrix16,
|
||||
convert_matrix(j->s, j->s->q_intra_matrix, j->s->q_intra_matrix16,
|
||||
j->s->intra_matrix, j->s->intra_quant_bias, 8, 8);
|
||||
|
||||
/* Pick up the selection of the optimal get_pixels() routine
|
||||
* to use, which was done in MPV_common_init() */
|
||||
get_pixels = j->s->dsp.get_pixels;
|
||||
|
||||
return j;
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* \brief mjpeg encode an image
|
||||
*
|
||||
* This routine will take a 3-plane YUV422 image and encoded it with MJPEG
|
||||
* base line format, as suitable as input for the Zoran hardare MJPEG chips.
|
||||
*
|
||||
* It requires that the \a j parameter points the structure set up by the
|
||||
* jpeg_enc_init() routine.
|
||||
*
|
||||
* \param j pointer to jpeg_enc_t structure as created by jpeg_enc_init()
|
||||
* \param y_data pointer to Y component plane, packed one byte/pixel
|
||||
* \param u_data pointer to U component plane, packed one byte per every
|
||||
* other pixel
|
||||
* \param v_data pointer to V component plane, packed one byte per every
|
||||
* other pixel
|
||||
* \param bufr pointer to the buffer where the mjpeg encoded code is stored
|
||||
*
|
||||
* \returns the number of bytes stored into \a bufr
|
||||
*
|
||||
* If \a j->s->mjpeg_write_tables is set, it will also emit the mjpeg tables,
|
||||
* otherwise it will just emit the data. The \a j->s->mjpeg_write_tables
|
||||
* variable will be reset to 0 by the routine.
|
||||
*/
|
||||
static int jpeg_enc_frame(jpeg_enc_t *j, uint8_t *y_data,
|
||||
uint8_t *u_data, uint8_t *v_data, uint8_t *bufr) {
|
||||
int mb_x, mb_y, overflow;
|
||||
|
|
@ -460,8 +579,8 @@ static int jpeg_enc_frame(jpeg_enc_t *j, uint8_t *y_data,
|
|||
|
||||
j->s->header_bits = put_bits_count(&j->s->pb);
|
||||
|
||||
j->s->last_dc[0] = 128;
|
||||
j->s->last_dc[1] = 128;
|
||||
j->s->last_dc[0] = 128;
|
||||
j->s->last_dc[1] = 128;
|
||||
j->s->last_dc[2] = 128;
|
||||
|
||||
for (mb_y = 0; mb_y < j->s->mb_height; mb_y++) {
|
||||
|
|
@ -473,27 +592,27 @@ static int jpeg_enc_frame(jpeg_enc_t *j, uint8_t *y_data,
|
|||
fill_block(j, mb_x, mb_y, y_data, u_data, v_data);
|
||||
emms_c(); /* is this really needed? */
|
||||
|
||||
j->s->block_last_index[0] =
|
||||
j->s->dct_quantize(j->s, j->s->block[0],
|
||||
j->s->block_last_index[0] =
|
||||
j->s->dct_quantize(j->s, j->s->block[0],
|
||||
0, 8, &overflow);
|
||||
if (overflow) clip_coeffs(j->s, j->s->block[0],
|
||||
if (overflow) clip_coeffs(j->s, j->s->block[0],
|
||||
j->s->block_last_index[0]);
|
||||
j->s->block_last_index[1] =
|
||||
j->s->dct_quantize(j->s, j->s->block[1],
|
||||
j->s->block_last_index[1] =
|
||||
j->s->dct_quantize(j->s, j->s->block[1],
|
||||
1, 8, &overflow);
|
||||
if (overflow) clip_coeffs(j->s, j->s->block[1],
|
||||
if (overflow) clip_coeffs(j->s, j->s->block[1],
|
||||
j->s->block_last_index[1]);
|
||||
|
||||
if (!j->bw) {
|
||||
j->s->block_last_index[4] =
|
||||
j->s->dct_quantize(j->s, j->s->block[2],
|
||||
4, 8, &overflow);
|
||||
if (overflow) clip_coeffs(j->s, j->s->block[2],
|
||||
if (overflow) clip_coeffs(j->s, j->s->block[2],
|
||||
j->s->block_last_index[2]);
|
||||
j->s->block_last_index[5] =
|
||||
j->s->dct_quantize(j->s, j->s->block[3],
|
||||
5, 8, &overflow);
|
||||
if (overflow) clip_coeffs(j->s, j->s->block[3],
|
||||
if (overflow) clip_coeffs(j->s, j->s->block[3],
|
||||
j->s->block_last_index[3]);
|
||||
}
|
||||
zr_mjpeg_encode_mb(j);
|
||||
|
|
@ -501,20 +620,27 @@ static int jpeg_enc_frame(jpeg_enc_t *j, uint8_t *y_data,
|
|||
}
|
||||
emms_c();
|
||||
mjpeg_picture_trailer(j->s);
|
||||
flush_put_bits(&j->s->pb);
|
||||
flush_put_bits(&j->s->pb);
|
||||
|
||||
if (j->s->mjpeg_write_tables == 1)
|
||||
j->s->mjpeg_write_tables = 0;
|
||||
|
||||
|
||||
return pbBufPtr(&(j->s->pb)) - j->s->pb.buf;
|
||||
}
|
||||
|
||||
/// the real uninit routine
|
||||
/**
|
||||
* This is the real routine that does the uninit of the ZRMJPEG filter
|
||||
*
|
||||
* \param j pointer to jpeg_enc structure
|
||||
*/
|
||||
static void jpeg_enc_uninit(jpeg_enc_t *j) {
|
||||
mjpeg_close(j->s);
|
||||
av_free(j->s);
|
||||
av_free(j);
|
||||
}
|
||||
|
||||
/// Private structure for ZRMJPEG filter
|
||||
struct vf_priv_s {
|
||||
jpeg_enc_t *j;
|
||||
unsigned char buf[256*1024];
|
||||
|
|
@ -527,6 +653,24 @@ struct vf_priv_s {
|
|||
int maxheight;
|
||||
};
|
||||
|
||||
/// vf CONFIGURE entry point for the ZRMJPEG filter
|
||||
/**
|
||||
* \param vf video filter instance pointer
|
||||
* \param width image source width in pixels
|
||||
* \param height image source height in pixels
|
||||
* \param d_width width of requested window, just a hint
|
||||
* \param d_height height of requested window, just a hint
|
||||
* \param flags vf filter flags
|
||||
* \param outfmt
|
||||
*
|
||||
* \returns returns 0 on error
|
||||
*
|
||||
* This routine will make the necessary hardware-related decisions for
|
||||
* the ZRMJPEG filter, do the initialization of the MJPEG encoder, and
|
||||
* then select one of the ZRJMJPEGIT or ZRMJPEGNI filters and then
|
||||
* arrange to dispatch to the config() entry pointer for the one
|
||||
* selected.
|
||||
*/
|
||||
static int config(struct vf_instance_s* vf, int width, int height, int d_width,
|
||||
int d_height, unsigned int flags, unsigned int outfmt){
|
||||
struct vf_priv_s *priv = vf->priv;
|
||||
|
|
@ -541,10 +685,10 @@ static int config(struct vf_instance_s* vf, int width, int height, int d_width,
|
|||
jpeg_enc_uninit(priv->j);
|
||||
priv->j = NULL;
|
||||
}
|
||||
|
||||
|
||||
aspect_decision = ((float)d_width/(float)d_height)/
|
||||
((float)width/(float)height);
|
||||
|
||||
|
||||
if (aspect_decision > 1.8 && aspect_decision < 2.2) {
|
||||
VERBOSE("should correct aspect by stretching x times 2, %d %d\n", 2*width, priv->maxwidth);
|
||||
if (2*width <= priv->maxwidth) {
|
||||
|
|
@ -565,9 +709,9 @@ static int config(struct vf_instance_s* vf, int width, int height, int d_width,
|
|||
/* make the scaling decision
|
||||
* we are capable of stretching the image in the horizontal
|
||||
* direction by factors 1, 2 and 4
|
||||
* we can stretch the image in the vertical direction by a
|
||||
* we can stretch the image in the vertical direction by a
|
||||
* factor of 1 and 2 AND we must decide about interlacing */
|
||||
if (d_width > priv->maxwidth/2 || height > priv->maxheight/2
|
||||
if (d_width > priv->maxwidth/2 || height > priv->maxheight/2
|
||||
|| maxstretchx == 1) {
|
||||
stretchx = 1;
|
||||
stretchy = 1;
|
||||
|
|
@ -580,7 +724,10 @@ static int config(struct vf_instance_s* vf, int width, int height, int d_width,
|
|||
}
|
||||
if (priv->hdec > maxstretchx) {
|
||||
if (priv->fd) {
|
||||
WARNING("horizontal decimation too high, changing to %d (use fd to keep hdec=%d)\n", maxstretchx, priv->hdec);
|
||||
WARNING("horizontal decimation too high, "
|
||||
"changing to %d (use fd to keep"
|
||||
" hdec=%d)\n",
|
||||
maxstretchx, priv->hdec);
|
||||
priv->hdec = maxstretchx;
|
||||
}
|
||||
}
|
||||
|
|
@ -595,7 +742,9 @@ static int config(struct vf_instance_s* vf, int width, int height, int d_width,
|
|||
stretchy = 2;
|
||||
} else if (priv->vdec == 4) {
|
||||
if (!priv->fd) {
|
||||
WARNING("vertical decimation too high, changing to 2 (use fd to keep vdec=4)\n");
|
||||
WARNING("vertical decimation too high, "
|
||||
"changing to 2 (use fd to keep "
|
||||
"vdec=4)\n");
|
||||
priv->vdec = 2;
|
||||
}
|
||||
stretchy = 2;
|
||||
|
|
@ -604,7 +753,9 @@ static int config(struct vf_instance_s* vf, int width, int height, int d_width,
|
|||
stretchx = 4;
|
||||
} else if (priv->hdec == 4) {
|
||||
if (priv->fd) {
|
||||
WARNING("horizontal decimation too high, changing to 2 (use fd to keep hdec=4)\n");
|
||||
WARNING("horizontal decimation too high, "
|
||||
"changing to 2 (use fd to keep "
|
||||
"hdec=4)\n");
|
||||
priv->hdec = 2;
|
||||
}
|
||||
stretchx = 4;
|
||||
|
|
@ -615,7 +766,9 @@ static int config(struct vf_instance_s* vf, int width, int height, int d_width,
|
|||
stretchy = 2;
|
||||
priv->fields = 1;
|
||||
if (priv->vdec != 1 && !priv->fd) {
|
||||
WARNING("vertical decimation too high, changing to 1 (use fd to keep vdec=%d)\n", priv->vdec);
|
||||
WARNING("vertical decimation too high, changing to 1 "
|
||||
"(use fd to keep vdec=%d)\n",
|
||||
priv->vdec);
|
||||
priv->vdec = 1;
|
||||
}
|
||||
if (priv->hdec != 1 && !priv->fd) {
|
||||
|
|
@ -623,9 +776,9 @@ static int config(struct vf_instance_s* vf, int width, int height, int d_width,
|
|||
priv->hdec = 1;
|
||||
}
|
||||
}
|
||||
|
||||
VERBOSE("generated JPEG's %dx%s%d%s, stretched to %dx%d\n",
|
||||
width/priv->hdec, (priv->fields == 2) ? "(" : "",
|
||||
|
||||
VERBOSE("generated JPEG's %dx%s%d%s, stretched to %dx%d\n",
|
||||
width/priv->hdec, (priv->fields == 2) ? "(" : "",
|
||||
height/(priv->vdec*priv->fields),
|
||||
(priv->fields == 2) ? "x2)" : "",
|
||||
(width/priv->hdec)*stretchx,
|
||||
|
|
@ -633,15 +786,20 @@ static int config(struct vf_instance_s* vf, int width, int height, int d_width,
|
|||
stretchy*priv->fields);
|
||||
|
||||
|
||||
if ((width/priv->hdec)*stretchx > priv->maxwidth ||
|
||||
if ((width/priv->hdec)*stretchx > priv->maxwidth ||
|
||||
(height/(priv->vdec*priv->fields))*
|
||||
stretchy*priv->fields > priv->maxheight) {
|
||||
ERROR("output dimensions too large (%dx%d), max (%dx%d) insert crop to fix\n", (width/priv->hdec)*stretchx, (height/(priv->vdec*priv->fields))*stretchy*priv->fields, priv->maxwidth, priv->maxheight);
|
||||
ERROR("output dimensions too large (%dx%d), max (%dx%d) "
|
||||
"insert crop to fix\n",
|
||||
(width/priv->hdec)*stretchx,
|
||||
(height/(priv->vdec*priv->fields))*
|
||||
stretchy*priv->fields,
|
||||
priv->maxwidth, priv->maxheight);
|
||||
err = 1;
|
||||
}
|
||||
|
||||
if (width%(16*priv->hdec) != 0) {
|
||||
ERROR("width must be a multiple of 16*hdec (%d), use expand\n",
|
||||
ERROR("width must be a multiple of 16*hdec (%d), use expand\n",
|
||||
priv->hdec*16);
|
||||
err = 1;
|
||||
}
|
||||
|
|
@ -663,33 +821,49 @@ static int config(struct vf_instance_s* vf, int width, int height, int d_width,
|
|||
1, priv->quality, priv->bw);
|
||||
|
||||
if (!priv->j) return 0;
|
||||
return vf_next_config(vf, width, height, d_width, d_height, flags,
|
||||
(priv->fields == 2) ? IMGFMT_ZRMJPEGIT : IMGFMT_ZRMJPEGNI);
|
||||
return vf_next_config(vf, width, height, d_width, d_height, flags,
|
||||
(priv->fields == 2) ? IMGFMT_ZRMJPEGIT : IMGFMT_ZRMJPEGNI);
|
||||
}
|
||||
|
||||
/// put_image entrypoint for the ZRMJPEG vf filter
|
||||
/***
|
||||
* \param vf pointer to vf_instance
|
||||
* \param mpi pointer to mp_image_t structure
|
||||
* \param pts
|
||||
*/
|
||||
static int put_image(struct vf_instance_s* vf, mp_image_t *mpi, double pts){
|
||||
struct vf_priv_s *priv = vf->priv;
|
||||
int size = 0;
|
||||
int i;
|
||||
mp_image_t* dmpi;
|
||||
for (i = 0; i < priv->fields; i++)
|
||||
size += jpeg_enc_frame(priv->j,
|
||||
mp_image_t* dmpi;
|
||||
for (i = 0; i < priv->fields; i++)
|
||||
size += jpeg_enc_frame(priv->j,
|
||||
mpi->planes[0] + i*priv->y_stride,
|
||||
mpi->planes[1] + i*priv->c_stride,
|
||||
mpi->planes[2] + i*priv->c_stride,
|
||||
mpi->planes[1] + i*priv->c_stride,
|
||||
mpi->planes[2] + i*priv->c_stride,
|
||||
priv->buf + size);
|
||||
|
||||
dmpi = vf_get_image(vf->next, IMGFMT_ZRMJPEGNI,
|
||||
MP_IMGTYPE_EXPORT, 0, mpi->w, mpi->h);
|
||||
dmpi->planes[0] = (uint8_t*)priv->buf;
|
||||
dmpi->planes[1] = (uint8_t*)size;
|
||||
return vf_next_put_image(vf,dmpi, pts);
|
||||
return vf_next_put_image(vf,dmpi, pts);
|
||||
}
|
||||
|
||||
/// query_format entrypoint for the ZRMJPEG vf filter
|
||||
/***
|
||||
* \param vf pointer to vf_instance
|
||||
* \param fmt image format to query for
|
||||
*
|
||||
* \returns 0 if image format in fmt is not supported
|
||||
*
|
||||
* Given the image format specified by \a fmt, this routine is called
|
||||
* to ask if the format is supported or not.
|
||||
*/
|
||||
static int query_format(struct vf_instance_s* vf, unsigned int fmt){
|
||||
VERBOSE("query_format() called\n");
|
||||
|
||||
switch (fmt) {
|
||||
switch (fmt) {
|
||||
case IMGFMT_YV12:
|
||||
case IMGFMT_YUY2:
|
||||
/* strictly speaking the output format of
|
||||
|
|
@ -702,6 +876,10 @@ static int query_format(struct vf_instance_s* vf, unsigned int fmt){
|
|||
return 0;
|
||||
}
|
||||
|
||||
/// vf UNINIT entry point for the ZRMJPEG filter
|
||||
/**
|
||||
* \param vf pointer to the vf instance structure
|
||||
*/
|
||||
static void uninit(vf_instance_t *vf) {
|
||||
struct vf_priv_s *priv = vf->priv;
|
||||
VERBOSE("uninit() called\n");
|
||||
|
|
@ -709,6 +887,16 @@ static void uninit(vf_instance_t *vf) {
|
|||
free(priv);
|
||||
}
|
||||
|
||||
/// vf OPEN entry point for the ZRMJPEG filter
|
||||
/**
|
||||
* \param vf pointer to the vf instance structure
|
||||
* \param args the argument list string for the -vf zrmjpeg command
|
||||
*
|
||||
* \returns 0 for error, 1 for success
|
||||
*
|
||||
* This routine will do some basic initialization of local structures etc.,
|
||||
* and then parse the command line arguments specific for the ZRMJPEG filter.
|
||||
*/
|
||||
static int open(vf_instance_t *vf, char* args){
|
||||
struct vf_priv_s *priv;
|
||||
VERBOSE("open() called: args=\"%s\"\n", args);
|
||||
|
|
@ -724,7 +912,7 @@ static int open(vf_instance_t *vf, char* args){
|
|||
return 0;
|
||||
}
|
||||
|
||||
/* maximum displayable size by zoran card, these defaults
|
||||
/* maximum displayable size by zoran card, these defaults
|
||||
* are for my own zoran card in PAL mode, these can be changed
|
||||
* by filter options. But... in an ideal world these values would
|
||||
* be queried from the vo device itself... */
|
||||
|
|
@ -735,7 +923,7 @@ static int open(vf_instance_t *vf, char* args){
|
|||
priv->hdec = 1;
|
||||
priv->vdec = 1;
|
||||
|
||||
/* if libavcodec is already initialized, we must not initialize it
|
||||
/* if libavcodec is already initialized, we must not initialize it
|
||||
* again, but if it is not initialized then we mustinitialize it now. */
|
||||
if (!avcodec_inited) {
|
||||
/* we need to initialize libavcodec */
|
||||
|
|
@ -743,7 +931,7 @@ static int open(vf_instance_t *vf, char* args){
|
|||
avcodec_register_all();
|
||||
avcodec_inited=1;
|
||||
}
|
||||
|
||||
|
||||
if (args) {
|
||||
char *arg, *tmp, *ptr, junk;
|
||||
int last = 0, input;
|
||||
|
|
@ -766,7 +954,7 @@ static int open(vf_instance_t *vf, char* args){
|
|||
* be queried from the vo device, but it is currently
|
||||
* too difficult, so the user should tell the filter */
|
||||
if (!strncmp("maxheight=", ptr, 10)) {
|
||||
if (sscanf(ptr+10, "%d%c", &input, &junk) != 1)
|
||||
if (sscanf(ptr+10, "%d%c", &input, &junk) != 1)
|
||||
ERROR(
|
||||
"error parsing parameter to \"maxheight=\", \"%s\", ignoring\n"
|
||||
, ptr + 10);
|
||||
|
|
@ -789,7 +977,7 @@ static int open(vf_instance_t *vf, char* args){
|
|||
priv->quality);
|
||||
}
|
||||
} else if (!strncmp("maxwidth=", ptr, 9)) {
|
||||
if (sscanf(ptr+9, "%d%c", &input, &junk) != 1)
|
||||
if (sscanf(ptr+9, "%d%c", &input, &junk) != 1)
|
||||
ERROR(
|
||||
"error parsing parameter to \"maxwidth=\", \"%s\", ignoring\n"
|
||||
, ptr + 9);
|
||||
|
|
@ -799,13 +987,13 @@ static int open(vf_instance_t *vf, char* args){
|
|||
priv->maxwidth);
|
||||
}
|
||||
} else if (!strncmp("hdec=", ptr, 5)) {
|
||||
if (sscanf(ptr+5, "%d%c", &input, &junk) != 1)
|
||||
if (sscanf(ptr+5, "%d%c", &input, &junk) != 1)
|
||||
ERROR(
|
||||
"error parsing parameter to \"hdec=\", \"%s\", ignoring\n"
|
||||
, ptr + 9);
|
||||
else if (input != 1 && input != 2 && input != 4)
|
||||
ERROR(
|
||||
"illegal parameter to \"hdec=\", %d, should be 1, 2 or 4",
|
||||
"illegal parameter to \"hdec=\", %d, should be 1, 2 or 4",
|
||||
input);
|
||||
else {
|
||||
priv->hdec = input;
|
||||
|
|
@ -813,13 +1001,13 @@ static int open(vf_instance_t *vf, char* args){
|
|||
"setting horizontal decimation to %d\n", priv->maxwidth);
|
||||
}
|
||||
} else if (!strncmp("vdec=", ptr, 5)) {
|
||||
if (sscanf(ptr+5, "%d%c", &input, &junk) != 1)
|
||||
if (sscanf(ptr+5, "%d%c", &input, &junk) != 1)
|
||||
ERROR(
|
||||
"error parsing parameter to \"vdec=\", \"%s\", ignoring\n"
|
||||
, ptr + 9);
|
||||
else if (input != 1 && input != 2 && input != 4)
|
||||
ERROR(
|
||||
"illegal parameter to \"vdec=\", %d, should be 1, 2 or 4",
|
||||
"illegal parameter to \"vdec=\", %d, should be 1, 2 or 4",
|
||||
input);
|
||||
else {
|
||||
priv->vdec = input;
|
||||
|
|
@ -859,7 +1047,7 @@ static int open(vf_instance_t *vf, char* args){
|
|||
priv->maxheight = 480;
|
||||
VERBOSE("setting buz/lml33 NTSC profile\n");
|
||||
} else {
|
||||
WARNING("ignoring unknown filter option "
|
||||
WARNING("ignoring unknown filter option "
|
||||
"\"%s\", or missing argument\n",
|
||||
ptr);
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in New Issue