modules/stream_out/transcode/transcode.h

   1 #include <vlc_picture_fifo.h>
   2 #include <vlc_filter.h>
   3 #include <vlc_codec.h>
   4 #include "encoder/encoder.h"
   5
   6 /*100ms is around the limit where people are noticing lipsync issues*/
   7 #define MASTER_SYNC_MAX_DRIFT VLC_TICK_FROM_MS(100)
   8
   9 typedef struct
  10 {
  11     char *psz_filters;
  12     union
  13     {
  14         struct
  15         {
  16             char            *psz_deinterlace;
  17             config_chain_t  *p_deinterlace_cfg;
  18             char            *psz_spu_sources;
  19         } video;
  20     };
  21 } sout_filters_config_t;
  22
  23 static inline
  24 void sout_filters_config_init( sout_filters_config_t *p_cfg )
  25 {
  26     memset( p_cfg, 0, sizeof(*p_cfg) );
  27 }
  28
  29 static inline
  30 void sout_filters_config_clean( sout_filters_config_t *p_cfg )
  31 {
  32     free( p_cfg->psz_filters );
  33     if( p_cfg->video.psz_deinterlace )
  34     {
  35         free( p_cfg->video.psz_deinterlace );
  36         config_ChainDestroy( p_cfg->video.p_deinterlace_cfg );
  37     }
  38     free( p_cfg->video.psz_spu_sources );
  39 }
  40
  41 typedef struct sout_stream_id_sys_t sout_stream_id_sys_t;
  42
  43 typedef struct
  44 {
  45     sout_stream_id_sys_t *id_video;
  46
  47     bool                  b_soverlay;
  48
  49     /* Audio */
  50     transcode_encoder_config_t aenc_cfg;
  51     sout_filters_config_t afilters_cfg;
  52
  53     /* Video */
  54     transcode_encoder_config_t venc_cfg;
  55     sout_filters_config_t vfilters_cfg;
  56
  57     /* SPU */
  58     transcode_encoder_config_t senc_cfg;
  59
  60     /* Sync */
  61     bool            b_master_sync;
  62     sout_stream_id_sys_t *id_master_sync;
  63
  64 } sout_stream_sys_t;
  65
  66 struct aout_filters;
  67
  68 struct sout_stream_id_sys_t
  69 {
  70     bool            b_transcode;
  71     bool            b_error;
  72
  73     /* id of the out stream */
  74     void *downstream_id;
  75     void *(*pf_transcode_downstream_add)( sout_stream_t *,
  76                                           const es_format_t *orig,
  77                                           const es_format_t *current );
  78
  79     /* Decoder */
  80     decoder_t       *p_decoder;
  81
  82     struct
  83     {
  84         vlc_mutex_t lock;
  85         union
  86         {
  87             struct {
  88                 picture_t *first;
  89                 picture_t **last;
  90             } pic;
  91             struct {
  92                 subpicture_t *first;
  93                 subpicture_t **last;
  94             } spu;
  95             struct {
  96                 block_t *first;
  97                 block_t **last;
  98             } audio;
  99         };
 100     } fifo;
 101
 102     union
 103     {
 104         struct
 105         {
 106             int (*pf_drift_validate)(void *cbdata, vlc_tick_t);
 107         };
 108         struct
 109         {
 110             void (*pf_send_subpicture)(void *cbdata, subpicture_t *);
 111             int (*pf_get_output_dimensions)(void *cbdata, unsigned *, unsigned *);
 112             vlc_tick_t (*pf_get_master_drift)(void *cbdata);
 113         };
 114     };
 115     void *callback_data;
 116
 117     union
 118     {
 119          struct
 120          {
 121              filter_chain_t  *p_f_chain; /**< Video filters */
 122              filter_chain_t  *p_uf_chain; /**< User-specified video filters */
 123              filter_t        *p_spu_blender;
 124              spu_t           *p_spu;
 125              video_format_t  fmt_input_video;
 126          };
 127          struct
 128          {
 129              struct aout_filters    *p_af_chain; /**< Audio filters */
 130              audio_format_t  fmt_input_audio;
 131          };
 132     };
 133     es_format_t decoder_out; /* only rw from pf_*_format_update() */
 134     const sout_filters_config_t *p_filterscfg;
 135
 136     /* Encoder */
 137     const transcode_encoder_config_t *p_enccfg;
 138     transcode_encoder_t *encoder;
 139
 140     /* Sync */
 141     date_t          next_input_pts; /**< Incoming calculated PTS */
 142     vlc_tick_t      i_drift; /** how much buffer is ahead of calculated PTS */
 143 };
 144
 145 struct decoder_owner
 146 {
 147     decoder_t dec;
 148     vlc_object_t *p_obj;
 149     sout_stream_id_sys_t *id;
 150 };
 151
 152 static inline struct decoder_owner *dec_get_owner( decoder_t *p_dec )
 153 {
 154     return container_of( p_dec, struct decoder_owner, dec );
 155 }
 156
 157 static inline void es_format_SetMeta( es_format_t *p_dst, const es_format_t *p_src )
 158 {
 159     p_dst->i_group = p_src->i_group;
 160     p_dst->i_id = p_src->i_id;
 161     if( p_src->psz_language )
 162     {
 163         free( p_dst->psz_language );
 164         p_dst->psz_language = strdup( p_src->psz_language );
 165     }
 166     if( p_src->psz_description )
 167     {
 168         free( p_dst->psz_description );
 169         p_dst->psz_description = strdup( p_src->psz_description );
 170     }
 171 }
 172
 173 /* SPU */
 174
 175 void transcode_spu_clean  ( sout_stream_t *, sout_stream_id_sys_t * );
 176 int  transcode_spu_process( sout_stream_t *, sout_stream_id_sys_t *,
 177                                    block_t *, block_t ** );
 178 int  transcode_spu_init   ( sout_stream_t *, const es_format_t *, sout_stream_id_sys_t *);
 179
 180 /* AUDIO */
 181
 182 void transcode_audio_clean  ( sout_stream_id_sys_t * );
 183 int  transcode_audio_process( sout_stream_t *, sout_stream_id_sys_t *,
 184                                      block_t *, block_t ** );
 185 int  transcode_audio_init   ( sout_stream_t *, const es_format_t *,
 186                               sout_stream_id_sys_t *);
 187
 188 /* VIDEO */
 189
 190 void transcode_video_clean  ( sout_stream_t *, sout_stream_id_sys_t * );
 191 int  transcode_video_process( sout_stream_t *, sout_stream_id_sys_t *,
 192                                      block_t *, block_t ** );
 193 int transcode_video_get_output_dimensions( sout_stream_t *, sout_stream_id_sys_t *,
 194                                            unsigned *w, unsigned *h );
 195 void transcode_video_push_spu( sout_stream_t *, sout_stream_id_sys_t *, subpicture_t * );
 196 int  transcode_video_init    ( sout_stream_t *, const es_format_t *,
 197                                sout_stream_id_sys_t *);