From fc53b6afee7cdf1b9125d2c5a43f3fe879d85f24 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Sat, 9 Jan 2010 14:59:06 +0000 Subject: Split H263 encoder and decoder from common code. Originally committed as revision 21109 to svn://svn.ffmpeg.org/ffmpeg/trunk --- libavcodec/h263.h | 68 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 68 insertions(+) (limited to 'libavcodec/h263.h') diff --git a/libavcodec/h263.h b/libavcodec/h263.h index f7c5fd0..d45a52d 100644 --- a/libavcodec/h263.h +++ b/libavcodec/h263.h @@ -32,6 +32,8 @@ extern const AVRational ff_h263_pixel_aspect[16]; extern const uint8_t ff_h263_cbpy_tab[16][2]; +extern const uint8_t cbpc_b_tab[4][2]; + extern const uint8_t mvtab[33][2]; extern const uint8_t ff_h263_intra_MCBPC_code[9]; @@ -39,6 +41,7 @@ extern const uint8_t ff_h263_intra_MCBPC_bits[9]; extern const uint8_t ff_h263_inter_MCBPC_code[28]; extern const uint8_t ff_h263_inter_MCBPC_bits[28]; +extern const uint8_t h263_mbtype_b_tab[15][2]; extern VLC ff_h263_intra_MCBPC_vlc; extern VLC ff_h263_inter_MCBPC_vlc; @@ -46,8 +49,66 @@ extern VLC ff_h263_cbpy_vlc; extern RLTable ff_h263_rl_inter; +extern RLTable rl_intra_aic; + +extern const uint16_t h263_format[8][2]; +extern const uint8_t modified_quant_tab[2][32]; +extern uint16_t ff_mba_max[6]; +extern uint8_t ff_mba_length[7]; + +extern uint8_t ff_h263_static_rl_table_store[2][2][2*MAX_RUN + MAX_LEVEL + 3]; + + int h263_decode_motion(MpegEncContext * s, int pred, int f_code); av_const int ff_h263_aspect_to_info(AVRational aspect); +int ff_h263_decode_init(AVCodecContext *avctx); +int ff_h263_decode_frame(AVCodecContext *avctx, + void *data, int *data_size, + AVPacket *avpkt); +int ff_h263_decode_end(AVCodecContext *avctx); +void h263_encode_mb(MpegEncContext *s, + DCTELEM block[6][64], + int motion_x, int motion_y); +void h263_encode_picture_header(MpegEncContext *s, int picture_number); +void h263_encode_gob_header(MpegEncContext * s, int mb_line); +int16_t *h263_pred_motion(MpegEncContext * s, int block, int dir, + int *px, int *py); +void h263_encode_init(MpegEncContext *s); +void h263_decode_init_vlc(MpegEncContext *s); +int h263_decode_picture_header(MpegEncContext *s); +int ff_h263_decode_gob_header(MpegEncContext *s); +void ff_h263_update_motion_val(MpegEncContext * s); +void ff_h263_loop_filter(MpegEncContext * s); +void ff_set_qscale(MpegEncContext * s, int qscale); +int ff_h263_decode_mba(MpegEncContext *s); +void ff_h263_encode_mba(MpegEncContext *s); +void ff_init_qscale_tab(MpegEncContext *s); +int h263_pred_dc(MpegEncContext * s, int n, int16_t **dc_val_ptr); +void h263_pred_acdc(MpegEncContext * s, DCTELEM *block, int n); + + +/** + * Prints picture info if FF_DEBUG_PICT_INFO is set. + */ +void ff_h263_show_pict_info(MpegEncContext *s); + +int ff_intel_h263_decode_picture_header(MpegEncContext *s); +int ff_h263_decode_mb(MpegEncContext *s, + DCTELEM block[6][64]); + +/** + * Returns the value of the 3bit "source format" syntax element. + * that represents some standard picture dimensions or indicates that + * width&height are explicitly stored later. + */ +int av_const h263_get_picture_format(int width, int height); + +void ff_clean_h263_qscales(MpegEncContext *s); +int ff_h263_resync(MpegEncContext *s); +const uint8_t *ff_h263_find_resync_marker(const uint8_t *p, const uint8_t *end); +int ff_h263_get_gob_height(MpegEncContext *s); +void ff_h263_encode_motion(MpegEncContext * s, int val, int f_code); + static inline int h263_get_motion_length(MpegEncContext * s, int val, int f_code){ int l, bit_size, code; @@ -175,4 +236,11 @@ static inline int get_b_cbp(MpegEncContext * s, DCTELEM block[6][64], } return cbp; } + +static inline void memsetw(short *tab, int val, int n) +{ + int i; + for(i=0;i