/*
* MJPEG decoder
- * Copyright (c) 2000, 2001 Fabrice Bellard.
+ * Copyright (c) 2000, 2001 Fabrice Bellard
* Copyright (c) 2003 Alex Beregszaszi
* Copyright (c) 2003-2004 Michael Niedermayer
*
*/
/**
- * @file mjpegdec.h
+ * @file libavcodec/mjpegdec.h
* MJPEG decoder.
*/
-#ifndef FFMPEG_MJPEGDEC_H
-#define FFMPEG_MJPEGDEC_H
+#ifndef AVCODEC_MJPEGDEC_H
+#define AVCODEC_MJPEGDEC_H
#include "avcodec.h"
-#include "bitstream.h"
+#include "get_bits.h"
#include "dsputil.h"
-#include "mpegvideo.h"
#define MAX_COMPONENTS 4
int width, height;
int mb_width, mb_height;
int nb_components;
+ int block_stride[MAX_COMPONENTS];
int component_id[MAX_COMPONENTS];
int h_count[MAX_COMPONENTS]; /* horizontal and vertical count for each component */
int v_count[MAX_COMPONENTS];
int quant_index[4]; /* quant table index for each component */
int last_dc[MAX_COMPONENTS]; /* last DEQUANTIZED dc (XXX: am I right to do that ?) */
AVFrame picture; /* picture structure */
+ int got_picture; ///< we found a SOF and picture is valid, too.
int linesize[MAX_COMPONENTS]; ///< linesize << interlaced
int8_t *qscale_table;
- DECLARE_ALIGNED_8(DCTELEM, block[64]);
+ DECLARE_ALIGNED_16(DCTELEM, block)[64];
+ DCTELEM (*blocks[MAX_COMPONENTS])[64]; ///< intermediate sums (progressive mode)
+ uint8_t *last_nnz[MAX_COMPONENTS];
+ uint64_t coefs_finished[MAX_COMPONENTS]; ///< bitmask of which coefs have been completely decoded (progressive mode)
ScanTable scantable;
DSPContext dsp;
int mjpb_skiptosod;
int cur_scan; /* current scan, used by JPEG-LS */
+ int flipped; /* true if picture is flipped */
+
+ uint16_t (*ljpeg_buffer)[4];
+ unsigned int ljpeg_buffer_size;
} MJpegDecodeContext;
int ff_mjpeg_decode_init(AVCodecContext *avctx);
int ff_mjpeg_decode_end(AVCodecContext *avctx);
int ff_mjpeg_decode_frame(AVCodecContext *avctx,
void *data, int *data_size,
- const uint8_t *buf, int buf_size);
+ AVPacket *avpkt);
int ff_mjpeg_decode_dqt(MJpegDecodeContext *s);
int ff_mjpeg_decode_dht(MJpegDecodeContext *s);
int ff_mjpeg_decode_sof(MJpegDecodeContext *s);
int ff_mjpeg_decode_sos(MJpegDecodeContext *s);
-#endif /* FFMPEG_MJPEGDEC_H */
+#endif /* AVCODEC_MJPEGDEC_H */