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136 lines
4.2 KiB
136 lines
4.2 KiB
/*****************************************************************************
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* vpar_synchro.h : video parser blocks management
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* (c)1999 VideoLAN
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*****************************************************************************
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*****************************************************************************
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* Requires:
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* "config.h"
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* "common.h"
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* "mtime.h"
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* "vlc_thread.h"
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* "input.h"
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* "video.h"
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* "video_output.h"
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* "decoder_fifo.h"
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* "video_fifo.h"
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*****************************************************************************/
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#define POLUX_SYNCHRO
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/*****************************************************************************
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* video_synchro_t and video_synchro_tab_s : timers for the video synchro
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*****************************************************************************/
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#ifdef SAM_SYNCHRO
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typedef struct video_synchro_tab_s
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{
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double mean;
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double deviation;
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} video_synchro_tab_t;
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typedef struct video_synchro_fifo_s
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{
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/* type of image to be decoded, and decoding date */
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int i_image_type;
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mtime_t i_decode_date;
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mtime_t i_pts;
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} video_synchro_fifo_t;
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typedef struct video_synchro_s
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{
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/* fifo containing decoding dates */
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video_synchro_fifo_t fifo[16];
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unsigned int i_fifo_start;
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unsigned int i_fifo_stop;
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/* mean decoding time */
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mtime_t i_mean_decode_time;
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/* dates */
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mtime_t i_last_display_pts; /* pts of the last displayed image */
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mtime_t i_last_decode_pts; /* pts of the last decoded image */
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mtime_t i_last_i_pts; /* pts of the last I image */
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mtime_t i_last_nondropped_i_pts; /* pts of last non-dropped I image */
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unsigned int i_images_since_pts;
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/* il manquait un compteur */
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unsigned int modulo;
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/* P images since the last I */
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unsigned int current_p_count;
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unsigned int nondropped_p_count;
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double p_count_predict;
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/* B images since the last I */
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unsigned int current_b_count;
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unsigned int nondropped_b_count;
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double b_count_predict;
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/* can we display pictures ? */
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unsigned int can_display_i;
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unsigned int can_display_p;
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double displayable_p;
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unsigned int can_display_b;
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double displayable_b;
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/* 1 for linear count, 2 for binary count, 3 for ternary count */
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video_synchro_tab_t tab_p[6];
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video_synchro_tab_t tab_b[6];
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double theorical_fps;
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double actual_fps;
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} video_synchro_t;
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#endif
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#ifdef MEUUH_SYNCHRO
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typedef struct video_synchro_s
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{
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int kludge_level, kludge_p, kludge_b, kludge_nbp, kludge_nbb;
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int kludge_nbframes;
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mtime_t kludge_date, kludge_prevdate;
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int i_coding_type;
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} video_synchro_t;
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#define SYNC_TOLERATE ((int)(0.010*CLOCK_FREQ)) /* 10 ms */
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#define SYNC_DELAY ((int)(0.500*CLOCK_FREQ)) /* 500 ms */
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#endif
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#ifdef POLUX_SYNCHRO
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#define SYNC_AVERAGE_COUNT 10
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typedef struct video_synchro_s
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{
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/* Date Section */
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/* Dates needed to compute the date of the current frame
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* We also use the stream frame rate (sequence.r_frame_rate) */
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mtime_t i_current_frame_date;
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mtime_t i_backward_frame_date;
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/* Frame Trashing Section */
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int i_b_nb, i_p_nb; /* number of decoded P and B between two I */
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float r_b_average, r_p_average;
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int i_b_count, i_p_count, i_i_count;
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int i_b_trasher; /* used for brensenham algorithm */
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} video_synchro_t;
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#endif
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/*****************************************************************************
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* Prototypes
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*****************************************************************************/
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boolean_t vpar_SynchroChoose( struct vpar_thread_s * p_vpar, int i_coding_type,
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int i_structure );
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void vpar_SynchroTrash( struct vpar_thread_s * p_vpar, int i_coding_type,
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int i_structure );
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void vpar_SynchroDecode( struct vpar_thread_s * p_vpar, int i_coding_type,
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int i_structure );
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void vpar_SynchroEnd( struct vpar_thread_s * p_vpar );
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mtime_t vpar_SynchroDate( struct vpar_thread_s * p_vpar );
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#ifndef SAM_SYNCHRO
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void vpar_SynchroKludge( struct vpar_thread_s *, mtime_t );
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#endif
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