remove contrib mpeg2dec

We no longer need mpeg2dec.  libav now has all the features we need
for mpeg2 decoding.


git-svn-id: svn://svn.handbrake.fr/HandBrake/trunk@5966 b64f7644-9d1e-0410-96f1-a4d463321fa5

1 files changed, 0 insertions, 1013 deletions

diff --git a/libhb/decmpeg2.c b/libhb/decmpeg2.c
deleted file mode 100644
index 9d6b8fe42..000000000
--- a/libhb/decmpeg2.c
+++ /dev/null
@@ -1,1013 +0,0 @@
-/* decmpeg2.c
-
-   Copyright (c) 2003-2013 HandBrake Team
-   This file is part of the HandBrake source code
-   Homepage: <http://handbrake.fr/>.
-   It may be used under the terms of the GNU General Public License v2.
-   For full terms see the file COPYING file or visit http://www.gnu.org/licenses/gpl-2.0.html
- */
-
-#include "hb.h"
-#include "hbffmpeg.h"
-#include "mpeg2dec/mpeg2.h"
-
-/* Cadence tracking */
-#ifndef PIC_FLAG_REPEAT_FIRST_FIELD
-#define PIC_FLAG_REPEAT_FIRST_FIELD 256
-#endif
-#define TOP_FIRST PIC_FLAG_TOP_FIELD_FIRST
-#define PROGRESSIVE PIC_FLAG_PROGRESSIVE_FRAME
-#define COMPOSITE PIC_FLAG_COMPOSITE_DISPLAY
-#define SKIP PIC_FLAG_SKIP
-#define TAGS PIC_FLAG_TAGS
-#define REPEAT_FIRST PIC_FLAG_REPEAT_FIRST_FIELD
-#define COMPOSITE_MASK PIC_MASK_COMPOSITE_DISPLAY
-#define TB 8
-#define BT 16
-#define BT_PROG 32
-#define BTB_PROG 64
-#define TB_PROG 128
-#define TBT_PROG 256
-
-#define NTAGS 8
-
-/**********************************************************************
- * hb_libmpeg2_t
- *********************************************************************/
-typedef struct hb_libmpeg2_s
-{
-    mpeg2dec_t         * libmpeg2;
-    const mpeg2_info_t * info;
-    hb_job_t           * job;
-    hb_title_t         * title;
-    int                  width;
-    int                  height;
-    int                  rate;
-    double               aspect_ratio;
-    enum AVPixelFormat   pixfmt;
-    int                  got_iframe;        /* set when we get our first iframe */
-    int                  look_for_iframe;   /* need an iframe to add chap break */
-    int                  look_for_break;    /* need gop start to add chap break */
-    int                  cur_tag;           /* index of current tag */
-    uint32_t             nframes;           /* number of frames we've decoded */
-    int64_t              last_pts;
-    int64_t              first_pts;
-    int cadence[12];
-    int flag;
-    hb_list_t          * list_subtitle;
-    hb_buffer_t        * last_cc1_buf;
-    struct {
-        int64_t          start;             // start time of this frame
-        hb_buffer_t    * cc_buf;            // captions for this frame
-    } tags[NTAGS];
-    uint8_t              cc_tag_pending;
-
-    struct SwsContext *sws_context; // if we have to rescale or convert color space
-    int             sws_width;
-    int             sws_height;
-    int             sws_pix_fmt;
-} hb_libmpeg2_t;
-
-/**********************************************************************
- * hb_libmpeg2_init
- **********************************************************************
- *
- *********************************************************************/
-static hb_libmpeg2_t * hb_libmpeg2_init()
-{
-    hb_libmpeg2_t * m = calloc( sizeof( hb_libmpeg2_t ), 1 );
-
-    m->libmpeg2 = mpeg2_init();
-    m->info     = mpeg2_info( m->libmpeg2 );
-    m->last_pts = -1;
-    m->first_pts = -1;
-
-    int i;
-    for ( i = 0; i < NTAGS; ++i )
-    {
-        m->tags[i].start = -2;
-    }
-
-    return m;
-}
-
-// send cc_buf to the CC decoder(s)
-static void cc_send_to_decoder( hb_libmpeg2_t *m, hb_buffer_t *cc_buf )
-{
-    hb_subtitle_t *subtitle;
-
-    // if there's more than one decoder for the captions send a copy
-    // of the buffer to all but the last. Then send the buffer to
-    // the last one (usually there's just one decoder so the 'while' is skipped).
-    int i = 0, n = hb_list_count( m->list_subtitle );
-    while ( --n > 0 )
-    {
-        // make a copy of the buf then forward it to the decoder
-        hb_buffer_t *cpy = hb_buffer_init( cc_buf->size );
-        cpy->s = cc_buf->s;
-        memcpy( cpy->data, cc_buf->data, cc_buf->size );
-
-        subtitle = hb_list_item( m->list_subtitle, i++ );
-        hb_fifo_push( subtitle->fifo_in, cpy );
-    }
-    subtitle = hb_list_item( m->list_subtitle, i );
-    hb_fifo_push( subtitle->fifo_in, cc_buf );
-}
-
-static void hb_mpeg2_cc( hb_libmpeg2_t *m, const uint8_t *cc_block )
-{
-    uint8_t cc_hdr = *cc_block;
-    
-    if ( ( cc_hdr & 0x4 ) == 0 )
-        // not valid - ignore
-        return;
-
-    switch (cc_hdr & 3)
-    {
-        case 0:
-            // CC1 stream
-            if ( ( cc_block[1] & 0x7f ) == 0 && ( cc_block[2] & 0x7f ) == 0 )
-                // just padding - ignore
-                return;
-
-            if ( m->last_cc1_buf )
-            {
-                // new data from the same time as last call - add to buffer
-                int len = m->last_cc1_buf->size;
-                hb_buffer_realloc( m->last_cc1_buf, len + 2 );
-                memcpy( m->last_cc1_buf->data + len, cc_block+1, 2 );
-                m->last_cc1_buf->size = len + 2;
-                return;
-            }
-
-            // allocate a new buffer and copy the caption data into it.
-            // (we don't send it yet because we don't know what timestamp to use).
-            hb_buffer_t *cc_buf = hb_buffer_init( 2 );
-            if( !cc_buf )
-                return;
-
-            memcpy( cc_buf->data, cc_block+1, 2 );
-            m->last_cc1_buf = cc_buf;
-            break;
-#ifdef notyet
-        case 1:
-            // CC2 stream
-            //process608( cc_block+1, 2, &m->cc608 );
-            break;
-        case 2: //EIA-708
-            // DTVCC packet data
-            // Fall through
-        case 3: //EIA-708
-            {
-                uint8_t temp[4];
-                temp[0]=cc_valid;
-                temp[1]=cc_type;
-                temp[2]=cc_block[1];
-                temp[3]=cc_block[2];
-                do_708 ((const unsigned char *) temp, 4);
-            }
-            break;
-#endif
-        default:
-            break;
-    } 
-} 
-
-static inline int have_captions( const uint8_t *user_data, uint32_t len )
-{
-    return len >= 6 && 
-           ( ( user_data[0] == 0x43 && user_data[1] == 0x43 ) ||
-             ( user_data[0] == 0x47 && user_data[1] == 0x41 &&
-               user_data[2] == 0x39 && user_data[3] == 0x34 &&
-               user_data[4] == 3 && (user_data[5] & 0x40) ) );
-}
-
-static void do_one_dvd_cc( hb_libmpeg2_t *m, const uint8_t *header, int field1 )
-{
-    uint8_t data[3];
-
-    data[0] = ( header[0] == 0xff && 0 == field1 )? 0x04 : 0x05;
-    data[1] = header[1];
-    data[2] = header[2];
-    hb_mpeg2_cc( m, data );
-
-    data[0] = ( header[3] == 0xff && 1 == field1 )? 0x04 : 0x05;
-    data[1] = header[4];
-    data[2] = header[5];
-    hb_mpeg2_cc( m, data );
-}
-
-// extract all the captions in the current frame and send them downstream
-// to the decoder.
-//
-// (this routine should only be called if there are captions in the current
-// frame. I.e., only if a call to 'have_captions' returns true.)
-static void extract_mpeg2_captions( hb_libmpeg2_t *m )
-{
-    const uint8_t *user_data = m->info->user_data;
-    int dvd_captions = user_data[0] == 0x43;
-    int capcount, field1packet = 0;
-    const uint8_t *header = &user_data[4];
-    if ( !dvd_captions )
-    {
-        // ATSC encapsulated captions - header starts one byte later
-        // and has an extra unused byte following it.
-        capcount = header[1] & 0x1f;
-        header += 3;
-    }
-    else
-    {
-        // DVD captions
-        if ( ( header[0] & 0x80 ) == 0x00 ) 
-            field1packet=1; /* expect Field 1 second */
-        capcount=(header[0] & 0x1e) / 2;
-        header++;
-    }
-
-    int i;
-    for( i=0; i<capcount; i++ )
-    {
-        if ( !dvd_captions )
-        {
-            hb_mpeg2_cc( m, header );
-            header += 3;
-        }
-        else
-        {
-            do_one_dvd_cc( m, header, field1packet );
-            header += 6;
-        }
-    }
-    if ( dvd_captions )
-    {
-        // Deal with extra closed captions some DVDs have.
-        while( header[0]==0xfe || header[0]==0xff )
-        {
-            do_one_dvd_cc( m, header, field1packet );
-            header += 6;
-        }   
-    }   
-}
-
-static void next_tag( hb_libmpeg2_t *m, hb_buffer_t *buf_es )
-{
-    if( m->tags[m->cur_tag].cc_buf == m->last_cc1_buf )
-        m->last_cc1_buf = NULL;
-
-    m->cur_tag = ( m->cur_tag + 1 ) & (NTAGS-1);
-    if ( m->tags[m->cur_tag].start >= 0 || m->tags[m->cur_tag].cc_buf )
-    {
-        if ( m->tags[m->cur_tag].start < 0 ||
-             ( m->got_iframe && m->tags[m->cur_tag].start >= m->first_pts ) )
-            hb_log("mpeg2 tag botch: pts %"PRId64", tag pts %"PRId64" buf %p",
-                   buf_es->s.start, m->tags[m->cur_tag].start, m->tags[m->cur_tag].cc_buf);
-        if ( m->tags[m->cur_tag].cc_buf )
-            hb_buffer_close( &m->tags[m->cur_tag].cc_buf );
-    }
-    m->tags[m->cur_tag].start = buf_es->s.start;
-    mpeg2_tag_picture( m->libmpeg2, m->cur_tag, 0 );
-}
-
-static hb_buffer_t *hb_copy_frame( hb_libmpeg2_t *m )
-{
-    hb_job_t * job = m->job;
-    int width = m->info->sequence->width;
-    int height = m->info->sequence->height;
-    enum AVPixelFormat pixfmt = m->pixfmt;
-    uint8_t *y = m->info->display_fbuf->buf[0];
-    uint8_t *u = m->info->display_fbuf->buf[1];
-    uint8_t *v = m->info->display_fbuf->buf[2];
-    int crop[4] = {0};
-
-    int dst_w, dst_h;
-    int src_w, src_h;
-
-    if ( m->info->sequence->picture_width < m->info->sequence->width )
-    {
-        crop[3] = m->info->sequence->width - m->info->sequence->picture_width;
-    }
-    if ( m->info->sequence->picture_height < m->info->sequence->height )
-    {
-        crop[1] = m->info->sequence->height - m->info->sequence->picture_height;
-    }
-
-    src_w = width - (crop[2] + crop[3]);
-    src_h = height - (crop[0] + crop[1]);
-    if ( job )
-    {
-        dst_w = job->title->width;
-        dst_h = job->title->height;
-    }
-    else
-    {
-        dst_w = src_w;
-        dst_h = src_h;
-    }
-
-    hb_buffer_t *buf  = hb_video_buffer_init( dst_w, dst_h );
-    buf->s.start = -1;
-
-    AVPicture in, out, pic_crop;
-
-    in.data[0] = y;
-    in.data[1] = u;
-    in.data[2] = v;
-    in.linesize[0] = width;
-    in.linesize[1] = width>>1;
-    in.linesize[2] = width>>1;
-    hb_avpicture_fill( &out, buf );
-
-    av_picture_crop( &pic_crop, &in, pixfmt, crop[0], crop[2] );
-
-    if ( !m->sws_context ||
-         m->sws_width != src_w ||
-         m->sws_height != src_h ||
-         m->sws_pix_fmt != pixfmt )
-    {
-        // Source and Dest dimensions may be the same.  There is no speed
-        // cost to using sws_scale to simply copy the data.
-        m->sws_context = hb_sws_get_context( src_w, src_h, pixfmt,
-                                             dst_w, dst_h, buf->f.fmt,
-                                             SWS_LANCZOS|SWS_ACCURATE_RND);
-        m->sws_width = src_w;
-        m->sws_height = src_h;
-        m->sws_pix_fmt = pixfmt;
-
-        if ( m->sws_context == NULL )
-        {
-            hb_buffer_close( &buf );
-            return NULL;
-        }
-
-    }
-
-    sws_scale( m->sws_context, (const uint8_t* const *)pic_crop.data, 
-               pic_crop.linesize, 0, src_h, out.data, out.linesize );
-
-    return buf;
-}
-
-/**********************************************************************
- * hb_libmpeg2_decode
- **********************************************************************
- *
- *********************************************************************/
-static int hb_libmpeg2_decode( hb_libmpeg2_t * m, hb_buffer_t * buf_es,
-                               hb_list_t * list_raw )
-{
-    mpeg2_state_t    state;
-    hb_buffer_t    * buf;
-
-    if ( buf_es->size )
-    {
-        /* Feed libmpeg2 */
-        if( buf_es->s.start >= 0 )
-        {
-            next_tag( m, buf_es );
-            m->cc_tag_pending = 1;
-        }
-        mpeg2_buffer( m->libmpeg2, buf_es->data, buf_es->data + buf_es->size );
-    }
-
-    for( ;; )
-    {
-        state = mpeg2_parse( m->libmpeg2 );
-        if( state == STATE_BUFFER )
-        {
-            /* Require some more data */
-            break;
-        }
-
-        // if the user requested captions, process
-        // any captions found in the current frame.
-        if ( m->list_subtitle && m->last_pts >= 0 &&
-             have_captions( m->info->user_data, m->info->user_data_len ) )
-        {
-            extract_mpeg2_captions( m );
-            // if we don't have a tag for the captions, make one
-            if ( m->last_cc1_buf && m->tags[m->cur_tag].cc_buf != m->last_cc1_buf )
-            {
-                // If we have not set a CC tag for the picture and
-                // we have a new CC buffer, make a new tag.
-                if (!m->cc_tag_pending && m->tags[m->cur_tag].cc_buf != NULL)
-                {
-                    next_tag( m, buf_es );
-                }
-                else if (m->tags[m->cur_tag].cc_buf)
-                {
-                    hb_log("mpeg2 tag botch2: pts %"PRId64", tag pts %"PRId64" buf %p",
-                           buf_es->s.start, m->tags[m->cur_tag].start, m->tags[m->cur_tag].cc_buf);
-                    hb_buffer_close( &m->tags[m->cur_tag].cc_buf );
-                }
-                // see if we already made a tag for the timestamp. If so we
-                // can just use it, otherwise make a new tag.
-                if (m->tags[m->cur_tag].start == -2)
-                {
-                    next_tag( m, buf_es );
-                }
-                m->tags[m->cur_tag].cc_buf = m->last_cc1_buf;
-            }
-        }
-        if( state == STATE_PICTURE )
-        {
-            m->cc_tag_pending = 0;
-        }
-        else if( state == STATE_SEQUENCE )
-        {
-            if( !( m->width && m->height && m->rate ) )
-            {
-                m->width  = m->info->sequence->picture_width;
-                m->height = m->info->sequence->picture_height;
-                m->rate   = m->info->sequence->frame_period;
-                if ( m->aspect_ratio <= 0 && m->height &&
-                     m->info->sequence->pixel_height )
-                {
-                    /* mpeg2_parse doesn't store the aspect ratio. Instead
-                     * it keeps the pixel width & height that would cause
-                     * the storage width & height to come out in the correct
-                     * aspect ratio. Convert these back to aspect ratio.
-                     */
-                    double ar_numer = m->width * m->info->sequence->pixel_width;
-                    double ar_denom = m->height * m->info->sequence->pixel_height;
-                    m->aspect_ratio = ar_numer / ar_denom;
-                }
-            }
-            if ( m->info->sequence->width >> 1 == m->info->sequence->chroma_width &&
-                 m->info->sequence->height >> 1 == m->info->sequence->chroma_height )
-            {
-                m->pixfmt = AV_PIX_FMT_YUV420P;
-            }
-            else
-            {
-                m->pixfmt = AV_PIX_FMT_YUV422P;
-            }
-        }
-        else if( state == STATE_GOP && m->look_for_break)
-        {
-            // we were looking for a gop to add a chapter break - we found it
-            // so now start looking for an iframe.
-            m->look_for_iframe = m->look_for_break;
-            m->look_for_break = 0;
-        }
-        else if( ( state == STATE_SLICE || state == STATE_END ) &&
-                 m->info->display_fbuf )
-        {
-            m->last_cc1_buf = NULL;
-
-            if( !m->got_iframe && ( m->info->display_picture->flags &
-                  PIC_MASK_CODING_TYPE ) == PIC_FLAG_CODING_TYPE_I )
-            {
-                // we got an iframe so we can start decoding video now
-                m->got_iframe = 1;
-            }
-
-            if( m->got_iframe )
-            {
-                buf  = hb_copy_frame( m );
-                if ( buf == NULL )
-                    continue;
-
-                buf->sequence = buf_es->sequence;
-
-                hb_buffer_t *cc_buf = NULL;
-                if( m->info->display_picture->flags & PIC_FLAG_TAGS )
-                {
-                    int t = m->info->display_picture->tag;
-                    buf->s.start = m->tags[t].start;
-                    cc_buf = m->tags[t].cc_buf;
-                    m->tags[t].start = -2;
-                    m->tags[t].cc_buf = NULL;
-                }
-                if( buf->s.start < 0 && m->last_pts >= 0 )
-                {
-                    /* For some reason nb_fields is sometimes 1 while it
-                       should be 2 */
-                    buf->s.start = m->last_pts +
-                        MAX( 2, m->info->display_picture->nb_fields ) *
-                        m->info->sequence->frame_period / 600;
-                }
-                if ( buf->s.start >= 0 )
-                {
-                    m->last_pts = buf->s.start;
-                }
-
-                // if we were accumulating captions we now know the timestamp
-                // so ship them to the decoder.
-                if ( cc_buf )
-                {
-                    cc_buf->s.start = m->last_pts;
-                    cc_send_to_decoder( m, cc_buf );
-                }
-
-                if( m->look_for_iframe && ( m->info->display_picture->flags &
-                      PIC_MASK_CODING_TYPE ) == PIC_FLAG_CODING_TYPE_I )
-                {
-                    // we were waiting for an iframe to insert a chapter mark
-                    // and we have one.
-                    int new_chap = m->look_for_iframe;
-                    buf->s.new_chap = new_chap;
-
-                    m->look_for_iframe = 0;
-                    const char *chap_name = "";
-                    if ( m->job && new_chap > 0 &&
-                         hb_list_item( m->job->list_chapter,
-                                       new_chap - 1 ) )
-                    {
-                        hb_chapter_t * c = hb_list_item( 
-                                                 m->job->list_chapter,
-                                                 new_chap - 1 );
-                        chap_name = c->title;
-                    }
-                    hb_log( "mpeg2: \"%s\" (%d) at frame %u time %"PRId64,
-                            chap_name, new_chap, 
-                            m->nframes, buf->s.start );
-                }
-                else if ( m->nframes == 0 )
-                {
-                    // this is the first frame returned by the decoder
-                    m->first_pts = buf->s.start;
-                    if ( m->job && hb_list_item( m->job->list_chapter,
-                                                 m->job->chapter_start - 1 ) )
-                    {
-                        hb_chapter_t * c = hb_list_item( m->job->list_chapter,
-                                                         m->job->chapter_start - 1 );
-                        hb_log( "mpeg2: \"%s\" (%d) at frame %u time %"PRId64,
-                                c->title, m->job->chapter_start, m->nframes, buf->s.start );
-                    }
-                }
-                ++m->nframes;
-
-                m->flag = m->info->display_picture->flags;
-
-/*  Uncomment this block to see frame-by-frame picture flags, as the video encodes.
-               hb_log("***** MPEG 2 Picture Info for PTS %"PRId64" *****", buf->s.start);
-                if( m->flag & TOP_FIRST )
-                    hb_log("MPEG2 Flag: Top field first");
-                if( m->flag & PROGRESSIVE )
-                    hb_log("MPEG2 Flag: Progressive");
-                if( m->flag & COMPOSITE )
-                    hb_log("MPEG2 Flag: Composite");
-                if( m->flag & SKIP )
-                    hb_log("MPEG2 Flag: Skip!");
-                if( m->flag & TAGS )
-                    hb_log("MPEG2 Flag: TAGS");
-                if(fm->lag & REPEAT_FIRST )
-                    hb_log("MPEG2 Flag: Repeat first field");
-                if( m->flag & COMPOSITE_MASK )
-                    hb_log("MPEG2 Flag: Composite mask");
-                hb_log("fields: %d", m->info->display_picture->nb_fields);
-*/
-                /*  Rotate the cadence tracking. */
-                int i = 0;
-                for(i=11; i > 0; i--)
-                {
-                    m->cadence[i] = m->cadence[i-1];
-                }
-
-                if ( !(m->flag & PROGRESSIVE) && !(m->flag & TOP_FIRST) )
-                {
-                    /* Not progressive, not top first...
-                       That means it's probably bottom
-                       first, 2 fields displayed.
-                    */
-                    //hb_log("MPEG2 Flag: Bottom field first, 2 fields displayed.");
-                    m->cadence[0] = BT;
-                }
-                else if ( !(m->flag & PROGRESSIVE) && (m->flag & TOP_FIRST) )
-                {
-                    /* Not progressive, top is first,
-                       Two fields displayed.
-                    */
-                    //hb_log("MPEG2 Flag: Top field first, 2 fields displayed.");
-                    m->cadence[0] = TB;
-                }
-                else if ( (m->flag & PROGRESSIVE) && !(m->flag & TOP_FIRST) && !( m->flag & REPEAT_FIRST )  )
-                {
-                    /* Progressive, but noting else.
-                       That means Bottom first,
-                       2 fields displayed.
-                    */
-                    //hb_log("MPEG2 Flag: Progressive. Bottom field first, 2 fields displayed.");
-                    m->cadence[0] = BT_PROG;
-                }
-                else if ( (m->flag & PROGRESSIVE) && !(m->flag & TOP_FIRST) && ( m->flag & REPEAT_FIRST )  )
-                {
-                    /* Progressive, and repeat. .
-                       That means Bottom first,
-                       3 fields displayed.
-                    */
-                    //hb_log("MPEG2 Flag: Progressive repeat. Bottom field first, 3 fields displayed.");
-                    m->cadence[0] = BTB_PROG;
-                }
-                else if ( (m->flag & PROGRESSIVE) && (m->flag & TOP_FIRST) && !( m->flag & REPEAT_FIRST )  )
-                {
-                    /* Progressive, top first.
-                       That means top first,
-                       2 fields displayed.
-                    */
-                    //hb_log("MPEG2 Flag: Progressive. Top field first, 2 fields displayed.");
-                    m->cadence[0] = TB_PROG;
-                }
-                else if ( (m->flag & PROGRESSIVE) && (m->flag & TOP_FIRST) && ( m->flag & REPEAT_FIRST )  )
-                {
-                    /* Progressive, top, repeat.
-                       That means top first,
-                       3 fields displayed.
-                    */
-                    //hb_log("MPEG2 Flag: Progressive repeat. Top field first, 3 fields displayed.");
-                    m->cadence[0] = TBT_PROG;
-                }
-
-                if ( (m->cadence[2] <= TB) && (m->cadence[1] <= TB) && (m->cadence[0] > TB) && (m->cadence[11]) )
-                    hb_log("%fs: Video -> Film", (float)buf->s.start / 90000);
-                if ( (m->cadence[2] > TB) && (m->cadence[1] <= TB) && (m->cadence[0] <= TB) && (m->cadence[11]) )
-                    hb_log("%fs: Film -> Video", (float)buf->s.start / 90000);
-
-                buf->s.flags = m->info->display_picture->flags;
-
-                hb_list_add( list_raw, buf );
-            }
-        }
-        else if( state == STATE_INVALID )
-        {
-            mpeg2_reset( m->libmpeg2, 0 );
-        }
-
-        /*
-         * Add closed captions to the title if we are scanning (no job).
-         *
-         * Just because we don't add this doesn't mean that there aren't any when 
-         * we scan, just that noone said anything. So you should be able to add
-         * closed captions some other way (See decmpeg2Init() for alternative
-         * approach of assuming that there are always CC, which is probably
-         * safer - however I want to leave the autodetect in here for now to
-         * see how it goes).
-         */
-        if( !m->job && m->title &&
-            have_captions( m->info->user_data, m->info->user_data_len ) )
-        {
-            hb_subtitle_t *subtitle;
-            int i = 0;
-            
-            while ( ( subtitle = hb_list_item( m->title->list_subtitle, i++ ) ) )
-            {
-                /*
-                 * Let's call them 608 subs for now even if they aren't,
-                 * since they are the only types we grok.
-                 */
-                if( subtitle->source == CC608SUB ) 
-                {
-                    break;
-                }
-            }
-            
-            if( ! subtitle )
-            {
-                subtitle = calloc( sizeof( hb_subtitle_t ), 1 );
-                subtitle->track = 0;
-                subtitle->id = 0;
-                subtitle->format = TEXTSUB;
-                subtitle->source = CC608SUB;
-                subtitle->config.dest = PASSTHRUSUB;
-                subtitle->codec = WORK_DECCC608;
-                subtitle->type = 5; 
-                snprintf( subtitle->lang, sizeof( subtitle->lang ), "Closed Captions");
-                /*
-                 * The language of the subtitles will be the same as the first audio
-                 * track, i.e. the same as the video.
-                 */
-                hb_audio_t *audio = hb_list_item( m->title->list_audio, 0 );
-                if( audio )
-                {
-                    snprintf( subtitle->iso639_2, sizeof( subtitle->iso639_2 ), 
-                              "%s", audio->config.lang.iso639_2);
-                } else {
-                    snprintf( subtitle->iso639_2, sizeof( subtitle->iso639_2 ), "und");
-                }
-                hb_list_add( m->title->list_subtitle, subtitle );
-            }
-        }
-    }
-    return 1;
-}
-
-/**********************************************************************
- * hb_libmpeg2_close
- **********************************************************************
- *
- *********************************************************************/
-static void hb_libmpeg2_close( hb_libmpeg2_t ** _m )
-{
-    hb_libmpeg2_t * m = *_m;
-
-    mpeg2_close( m->libmpeg2 );
-
-    if ( m->sws_context )
-    {
-        sws_freeContext( m->sws_context );
-    }
-
-    int i;
-    for ( i = 0; i < NTAGS; ++i )
-    {
-        if ( m->tags[i].cc_buf )
-        {
-            if ( m->tags[i].cc_buf == m->last_cc1_buf )
-                m->last_cc1_buf = NULL;
-            hb_buffer_close( &m->tags[i].cc_buf );
-        }
-    }
-    if ( m->last_cc1_buf )
-    {
-        hb_buffer_close( &m->last_cc1_buf );
-    }
-
-    free( m );
-    *_m = NULL;
-}
-
-/**********************************************************************
- * The decmpeg2 work object
- **********************************************************************
- *
- *********************************************************************/
-struct hb_work_private_s
-{
-    hb_libmpeg2_t * libmpeg2;
-    hb_list_t     * list;
-};
-
-/**********************************************************************
- * hb_work_decmpeg2_init
- **********************************************************************
- *
- *********************************************************************/
-static int decmpeg2Init( hb_work_object_t * w, hb_job_t * job )
-{
-    hb_work_private_t * pv;
-
-    pv              = calloc( 1, sizeof( hb_work_private_t ) );
-    w->private_data = pv;
-
-    pv->libmpeg2 = hb_libmpeg2_init();
-    pv->list     = hb_list_init();
-
-    pv->libmpeg2->job = job;
-
-    if( job && job->title ) {
-        pv->libmpeg2->title = job->title;
-    }
-
-    /*
-     * If not scanning, then are we supposed to extract Closed Captions
-     * and send them to the decoder? 
-     */
-    if( job && hb_list_count( job->list_subtitle ) > 0 )
-    {
-        hb_subtitle_t *subtitle;
-        int i = 0;
-        
-        for( i = 0; i < hb_list_count( job->list_subtitle ); i++ )
-        while ( ( subtitle = hb_list_item( job->list_subtitle, i++ ) ) != NULL )
-        {
-            if( subtitle->source == CC608SUB ) 
-            {
-                if ( ! pv->libmpeg2->list_subtitle )
-                {
-                    pv->libmpeg2->list_subtitle = hb_list_init();
-                }
-                hb_list_add(pv->libmpeg2->list_subtitle, subtitle);
-            }
-        }
-    }
-
-    return 0;
-}
-
-/**********************************************************************
- * Work
- **********************************************************************
- *
- *********************************************************************/
-static int decmpeg2Work( hb_work_object_t * w, hb_buffer_t ** buf_in,
-                         hb_buffer_t ** buf_out )
-{
-    hb_work_private_t * pv = w->private_data;
-    hb_buffer_t * buf, * last = NULL;
-    hb_buffer_t * in = *buf_in;
-    int status = HB_WORK_OK;
-
-    if( w->title && pv && pv->libmpeg2 && !pv->libmpeg2->title ) {
-        pv->libmpeg2->title = w->title;
-    }
-
-    // The reader found a chapter break. Remove it from the input 
-    // stream. If we're reading (as opposed to scanning) start looking
-    // for the next GOP start since that's where the chapter begins.
-    if( in->s.new_chap )
-    {
-        if ( pv->libmpeg2->job )
-        {
-            pv->libmpeg2->look_for_break = in->s.new_chap;
-        }
-        in->s.new_chap = 0;
-    }
-
-    hb_libmpeg2_decode( pv->libmpeg2, in, pv->list );
-
-    /* if we got an empty buffer signaling end-of-stream send it downstream */
-    if ( in->size == 0 )
-    {
-        hb_list_add( pv->list, in );
-        *buf_in = NULL;
-        status = HB_WORK_DONE;
-
-        /*
-         * Purge any pending caption buffer then let the Closed Captions decoder
-         * know that it is the end of the data.
-         */
-        if ( pv->libmpeg2->list_subtitle )
-        {
-            if ( pv->libmpeg2->last_cc1_buf )
-            {
-                cc_send_to_decoder( pv->libmpeg2, pv->libmpeg2->last_cc1_buf );
-                if ( pv->libmpeg2->tags[pv->libmpeg2->cur_tag].cc_buf == 
-                     pv->libmpeg2->last_cc1_buf )
-                {
-                    pv->libmpeg2->tags[pv->libmpeg2->cur_tag].cc_buf = NULL;
-                }
-                pv->libmpeg2->last_cc1_buf = NULL;
-            }
-            cc_send_to_decoder( pv->libmpeg2, hb_buffer_init( 0 ) );
-        }
-    }
-
-    *buf_out = NULL;
-    while( ( buf = hb_list_item( pv->list, 0 ) ) )
-    {
-        hb_list_rem( pv->list, buf );
-        if( last )
-        {
-            last->next = buf;
-            last       = buf;
-        }
-        else
-        {
-            *buf_out = buf;
-            last     = buf;
-        }
-    }
-
-    return status;
-}
-
-/**********************************************************************
- * Close
- **********************************************************************
- *
- *********************************************************************/
-static void decmpeg2Close( hb_work_object_t * w )
-{
-    hb_work_private_t * pv = w->private_data;
-
-    // don't log during scan
-    if ( pv->libmpeg2->job )
-    {
-        hb_log( "mpeg2 done: %d frames", pv->libmpeg2->nframes );
-    }
-    hb_list_empty( &pv->list );
-    if ( pv->libmpeg2->list_subtitle )
-    {
-        hb_list_close( &pv->libmpeg2->list_subtitle );
-    }
-    hb_libmpeg2_close( &pv->libmpeg2 );
-    free( pv );
-}
-
-static int decmpeg2Info( hb_work_object_t *w, hb_work_info_t *info )
-{
-    hb_work_private_t *pv = w->private_data;
-
-    memset( info, 0, sizeof(*info) );
-
-    if ( pv && pv->libmpeg2 && pv->libmpeg2->info && pv->libmpeg2->info->sequence )
-    {
-        hb_libmpeg2_t *m = pv->libmpeg2;
-
-        info->width = m->width;
-        info->height = m->height;
-        info->pixel_aspect_width = m->info->sequence->pixel_width;
-        info->pixel_aspect_height = m->info->sequence->pixel_height;
-
-        // if the frame is progressive & NTSC DVD height report it as 23.976 FPS
-        // so that scan can autodetect NTSC film
-        info->rate = 27000000;
-        info->rate_base = ( m->info->display_fbuf && m->info->display_picture &&
-                            (m->info->display_picture->flags & PROGRESSIVE) &&
-                            (m->height == 480 ) ) ?  1126125 : m->rate;
-
-        info->name                 = "mpeg2";
-        info->video_decode_support = HB_DECODE_SUPPORT_SW;
-        info->bitrate              = m->info->sequence->byte_rate * 8;
-        info->profile              = m->info->sequence->profile_level_id >> 4;
-        info->level                = m->info->sequence->profile_level_id & 0xf;
-
-        if( pv->libmpeg2->info->sequence->flags & SEQ_FLAG_COLOUR_DESCRIPTION )
-        {
-            switch( pv->libmpeg2->info->sequence->colour_primaries )
-            {
-                case 1: // ITU-R Recommendation 709
-                    info->color_prim = HB_COLR_PRI_BT709;
-                    break;
-                case 5: // ITU-R Recommendation 624-4 System B, G
-                    info->color_prim = HB_COLR_PRI_EBUTECH;
-                    break;
-                case 4: // ITU-R Recommendation 624-4 System M
-                case 6: // SMPTE 170M
-                case 7: // SMPTE 240M
-                    info->color_prim = HB_COLR_PRI_SMPTEC;
-                    break;
-                default:
-                    info->color_prim = HB_COLR_PRI_UNDEF;
-                    break;
-            }
-            switch( pv->libmpeg2->info->sequence->transfer_characteristics )
-            {
-                case 1: // ITU-R Recommendation 709
-                case 4: // ITU-R Recommendation 624-4 System M
-                case 5: // ITU-R Recommendation 624-4 System B, G
-                case 6: // SMPTE 170M
-                    info->color_transfer = HB_COLR_TRA_BT709;
-                    break;
-                case 7: // SMPTE 240M
-                    info->color_transfer = HB_COLR_TRA_SMPTE240M;
-                    break;
-                default:
-                    info->color_transfer = HB_COLR_TRA_UNDEF;
-                    break;
-            }
-            switch( pv->libmpeg2->info->sequence->matrix_coefficients )
-            {
-                case 1: // ITU-R Recommendation 709
-                    info->color_matrix = HB_COLR_MAT_BT709;
-                    break;
-                case 4: // FCC
-                case 5: // ITU-R Recommendation 624-4 System B, G
-                case 6: // SMPTE 170M
-                    info->color_matrix = HB_COLR_MAT_SMPTE170M;
-                    break;
-                case 7: // SMPTE 240M
-                    info->color_matrix = HB_COLR_MAT_SMPTE240M;
-                    break;
-                default:
-                    info->color_matrix = HB_COLR_MAT_UNDEF;
-                    break;
-            }
-        }
-        else if( ( info->width >= 1280 || info->height >= 720 ) ||
-                 ( info->width >   720 && info->height >  576 ) )
-        {
-            // ITU BT.709 HD content
-            info->color_prim     = HB_COLR_PRI_BT709;
-            info->color_transfer = HB_COLR_TRA_BT709;
-            info->color_matrix   = HB_COLR_MAT_BT709;
-        }
-        else if( info->rate_base == 1080000 )
-        {
-            // ITU BT.601 DVD or SD TV content (PAL)
-            info->color_prim     = HB_COLR_PRI_EBUTECH;
-            info->color_transfer = HB_COLR_TRA_BT709;
-            info->color_matrix   = HB_COLR_MAT_SMPTE170M;
-        }
-        else
-        {
-            // ITU BT.601 DVD or SD TV content (NTSC)
-            info->color_prim     = HB_COLR_PRI_SMPTEC;
-            info->color_transfer = HB_COLR_TRA_BT709;
-            info->color_matrix   = HB_COLR_MAT_SMPTE170M;
-        }
-
-        return 1;
-    }
-    return 0;
-}
-
-static void decmpeg2Flush( hb_work_object_t *w )
-{
-    hb_work_private_t * pv = w->private_data;
-
-    mpeg2_reset( pv->libmpeg2->libmpeg2, 0 );
-    pv->libmpeg2->got_iframe = 0;
-}
-
-hb_work_object_t hb_decmpeg2 =
-{
-    .id = WORK_DECMPEG2,
-    .name = "MPEG-2 decoder (libmpeg2)",
-    .init = decmpeg2Init,
-    .work = decmpeg2Work,
-    .close = decmpeg2Close,
-    .flush = decmpeg2Flush,
-    .info = decmpeg2Info
-};
-