Use newer theora API and fix crash

Close #3841

This updates the theora module to use the newer API introduced in Theora version 1.0.
It solves a crash on windows that was caused by reading past the end of the YUV structure due to an incorrect line count.
This has been fixed by using the minimum line count common to both the source and destination of the pixel data.
The new ycbcr structure in the new API makes the picture copy much more straightforward.
Modified-by: Jean-Baptiste Kempf <jb@videolan.org>
Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>
(cherry picked from commit 1014cc35)
Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

modules/codec/theora.c

 /*****************************************************************************
  * theora.c: theora decoder module making use of libtheora.
  *****************************************************************************
- * Copyright (C) 1999-2001 the VideoLAN team
+ * Copyright (C) 1999-2012 the VideoLAN team
  * $Id$
  *
  * Authors: Gildas Bazin <gbazin@videolan.org>
@@ -37,7 +37,12 @@
 
 #include <ogg/ogg.h>
 
-#include <theora/theora.h>
+#include <theora/codec.h>
+#include <theora/theoradec.h>
+#include <theora/theoraenc.h>
+
+#include <assert.h>
+#include <limits.h>
 
 /*****************************************************************************
  * decoder_sys_t : theora decoder descriptor
@@ -55,9 +60,9 @@ struct decoder_sys_t
     /*
      * Theora properties
      */
-    theora_info      ti;                        /* theora bitstream settings */
-    theora_comment   tc;                            /* theora comment header */
-    theora_state     td;                   /* theora bitstream user comments */
+    th_info          ti;       /* theora bitstream settings */
+    th_comment       tc;       /* theora comment information */
+    th_dec_ctx       *tcx;     /* theora decoder context */
 
     /*
      * Decoding properties
@@ -84,7 +89,7 @@ static void *ProcessPacket ( decoder_t *, ogg_packet *, block_t ** );
 static picture_t *DecodePacket( decoder_t *, ogg_packet * );
 
 static void ParseTheoraComments( decoder_t * );
-static void theora_CopyPicture( picture_t *, yuv_buffer * );
+static void theora_CopyPicture( picture_t *, th_ycbcr_buffer );
 
 static int  OpenEncoder( vlc_object_t *p_this );
 static void CloseEncoder( vlc_object_t *p_this );
@@ -148,6 +153,7 @@ static int OpenDecoder( vlc_object_t *p_this )
     p_sys->b_has_headers = false;
     p_sys->i_pts = VLC_TS_INVALID;
     p_sys->b_decoded_first_keyframe = false;
+    p_sys->tcx = NULL;
 
     /* Set output properties */
     p_dec->fmt_out.i_cat = VIDEO_ES;
@@ -160,8 +166,8 @@ static int OpenDecoder( vlc_object_t *p_this )
         DecodeBlock;
 
     /* Init supporting Theora structures needed in header parsing */
-    theora_comment_init( &p_sys->tc );
-    theora_info_init( &p_sys->ti );
+    th_comment_init( &p_sys->tc );
+    th_info_init( &p_sys->ti );
 
     return VLC_SUCCESS;
 }
@@ -225,6 +231,7 @@ static int ProcessHeaders( decoder_t *p_dec )
 {
     decoder_sys_t *p_sys = p_dec->p_sys;
     ogg_packet oggpacket;
+    th_setup_info *ts = NULL; /* theora setup information */
 
     unsigned pi_size[XIPH_MAX_HEADER_COUNT];
     void     *pp_data[XIPH_MAX_HEADER_COUNT];
@@ -243,7 +250,7 @@ static int ProcessHeaders( decoder_t *p_dec )
     oggpacket.b_o_s  = 1; /* yes this actually is a b_o_s packet :) */
     oggpacket.bytes  = pi_size[0];
     oggpacket.packet = pp_data[0];
-    if( theora_decode_header( &p_sys->ti, &p_sys->tc, &oggpacket ) < 0 )
+    if( th_decode_headerin( &p_sys->ti, &p_sys->tc, &ts, &oggpacket ) < 0 )
     {
         msg_Err( p_dec, "this bitstream does not contain Theora video data" );
         goto error;
@@ -251,32 +258,35 @@ static int ProcessHeaders( decoder_t *p_dec )
 
     /* Set output properties */
     if( !p_sys->b_packetizer )
-    switch( p_sys->ti.pixelformat )
+
+    switch( p_sys->ti.pixel_fmt )
     {
-      case OC_PF_420:
+      case TH_PF_420:
         p_dec->fmt_out.i_codec = VLC_CODEC_I420;
         break;
-      case OC_PF_422:
+      case TH_PF_422:
         p_dec->fmt_out.i_codec = VLC_CODEC_I422;
         break;
-      case OC_PF_444:
+      case TH_PF_444:
         p_dec->fmt_out.i_codec = VLC_CODEC_I444;
         break;
-      case OC_PF_RSVD:
+      case TH_PF_RSVD:
       default:
         msg_Err( p_dec, "unknown chroma in theora sample" );
         break;
     }
-    p_dec->fmt_out.video.i_width = p_sys->ti.width;
-    p_dec->fmt_out.video.i_height = p_sys->ti.height;
-    if( p_sys->ti.frame_width && p_sys->ti.frame_height )
+
+    p_dec->fmt_out.video.i_width = p_sys->ti.frame_width;
+    p_dec->fmt_out.video.i_height = p_sys->ti.frame_height;
+    if( p_sys->ti.pic_width && p_sys->ti.pic_height )
     {
-        p_dec->fmt_out.video.i_visible_width = p_sys->ti.frame_width;
-        p_dec->fmt_out.video.i_visible_height = p_sys->ti.frame_height;
-        if( p_sys->ti.offset_x || p_sys->ti.offset_y )
+        p_dec->fmt_out.video.i_visible_width = p_sys->ti.pic_width;
+        p_dec->fmt_out.video.i_visible_height = p_sys->ti.pic_height;
+
+        if( p_sys->ti.pic_x || p_sys->ti.pic_y )
         {
-            p_dec->fmt_out.video.i_x_offset = p_sys->ti.offset_x;
-            p_dec->fmt_out.video.i_y_offset = p_sys->ti.offset_y;
+            p_dec->fmt_out.video.i_x_offset = p_sys->ti.pic_x;
+            p_dec->fmt_out.video.i_y_offset = p_sys->ti.pic_y;
         }
     }
 
@@ -299,31 +309,40 @@ static int ProcessHeaders( decoder_t *p_dec )
 
     msg_Dbg( p_dec, "%dx%d %.02f fps video, frame content "
              "is %dx%d with offset (%d,%d)",
-             p_sys->ti.width, p_sys->ti.height,
-             (double)p_sys->ti.fps_numerator/p_sys->ti.fps_denominator,
              p_sys->ti.frame_width, p_sys->ti.frame_height,
-             p_sys->ti.offset_x, p_sys->ti.offset_y );
+             (double)p_sys->ti.fps_numerator/p_sys->ti.fps_denominator,
+             p_sys->ti.pic_width, p_sys->ti.pic_height,
+             p_sys->ti.pic_x, p_sys->ti.pic_y );
+
+    /* Some assertions based on the documentation.  These are mandatory restrictions. */
+    assert( p_sys->ti.frame_height % 16 == 0 && p_sys->ti.frame_height < 1048576 );
+    assert( p_sys->ti.frame_width % 16 == 0 && p_sys->ti.frame_width < 1048576 );
+    assert( p_sys->ti.keyframe_granule_shift >= 0 && p_sys->ti.keyframe_granule_shift <= 31 );
+    assert( p_sys->ti.pic_x <= __MIN( p_sys->ti.frame_width - p_sys->ti.pic_width, 255 ) );
+    assert( p_sys->ti.pic_y <= p_sys->ti.frame_height - p_sys->ti.pic_height);
+    assert( p_sys->ti.frame_height - p_sys->ti.pic_height - p_sys->ti.pic_y <= 255 );
 
     /* Sanity check that seems necessary for some corrupted files */
-    if( p_sys->ti.width < p_sys->ti.frame_width ||
-        p_sys->ti.height < p_sys->ti.frame_height )
+    if( p_sys->ti.frame_width < p_sys->ti.pic_width ||
+        p_sys->ti.frame_height < p_sys->ti.pic_height )
     {
         msg_Warn( p_dec, "trying to correct invalid theora header "
                   "(frame size (%dx%d) is smaller than frame content (%d,%d))",
-                  p_sys->ti.width, p_sys->ti.height,
-                  p_sys->ti.frame_width, p_sys->ti.frame_height );
+                  p_sys->ti.frame_width, p_sys->ti.frame_height,
+                  p_sys->ti.pic_width, p_sys->ti.pic_height );
 
-        if( p_sys->ti.width < p_sys->ti.frame_width )
-            p_sys->ti.width = p_sys->ti.frame_width;
-        if( p_sys->ti.height < p_sys->ti.frame_height )
-            p_sys->ti.height = p_sys->ti.frame_height;
+        if( p_sys->ti.frame_width < p_sys->ti.pic_width )
+          p_sys->ti.frame_width = p_sys->ti.pic_width;
+        if( p_sys->ti.frame_height < p_sys->ti.pic_height )
+            p_sys->ti.frame_height = p_sys->ti.pic_height;
     }
 
     /* The next packet in order is the comments header */
     oggpacket.b_o_s  = 0;
     oggpacket.bytes  = pi_size[1];
     oggpacket.packet = pp_data[1];
-    if( theora_decode_header( &p_sys->ti, &p_sys->tc, &oggpacket ) < 0 )
+
+    if( th_decode_headerin( &p_sys->ti, &p_sys->tc, &ts, &oggpacket ) < 0 )
     {
         msg_Err( p_dec, "2nd Theora header is corrupted" );
         goto error;
@@ -337,7 +356,7 @@ static int ProcessHeaders( decoder_t *p_dec )
     oggpacket.b_o_s  = 0;
     oggpacket.bytes  = pi_size[2];
     oggpacket.packet = pp_data[2];
-    if( theora_decode_header( &p_sys->ti, &p_sys->tc, &oggpacket ) < 0 )
+    if( th_decode_headerin( &p_sys->ti, &p_sys->tc, &ts, &oggpacket ) < 0 )
     {
         msg_Err( p_dec, "3rd Theora header is corrupted" );
         goto error;
@@ -346,7 +365,11 @@ static int ProcessHeaders( decoder_t *p_dec )
     if( !p_sys->b_packetizer )
     {
         /* We have all the headers, initialize decoder */
-        theora_decode_init( &p_sys->td, &p_sys->ti );
+        if ( ( p_sys->tcx = th_decode_alloc( &p_sys->ti, ts ) ) == NULL )
+        {
+            msg_Err( p_dec, "Could not allocate Theora decoder" );
+            goto error;
+        }
     }
     else
     {
@@ -359,11 +382,15 @@ static int ProcessHeaders( decoder_t *p_dec )
 
     for( unsigned i = 0; i < i_count; i++ )
         free( pp_data[i] );
+    /* Clean up the decoder setup info... we're done with it */
+    th_setup_free( ts );
     return VLC_SUCCESS;
 
 error:
     for( unsigned i = 0; i < i_count; i++ )
         free( pp_data[i] );
+    /* Clean up the decoder setup info... we're done with it */
+    th_setup_free( ts );
     return VLC_EGENERIC;
 }
 
@@ -423,9 +450,12 @@ static picture_t *DecodePacket( decoder_t *p_dec, ogg_packet *p_oggpacket )
 {
     decoder_sys_t *p_sys = p_dec->p_sys;
     picture_t *p_pic;
-    yuv_buffer yuv;
+    th_ycbcr_buffer ycbcr;
 
-    theora_decode_packetin( &p_sys->td, p_oggpacket );
+    /* TODO: Implement _granpos (3rd parameter here) and add the
+     * call to TH_DECCTL_SET_GRANDPOS after seek */
+    if (th_decode_packetin( p_sys->tcx, p_oggpacket, NULL )) /* 0 on success */
+        return NULL; /* bad packet */
 
     /* Check for keyframe */
     if( !(p_oggpacket->packet[0] & 0x80) /* data packet */ &&
@@ -437,16 +467,17 @@ static picture_t *DecodePacket( decoder_t *p_dec, ogg_packet *p_oggpacket )
      * in the general case, but can happen if e.g. we play a network stream
      * using a timed URL, such that the server doesn't start the video with a
      * keyframe). */
-    if( p_sys->b_decoded_first_keyframe )
-        theora_decode_YUVout( &p_sys->td, &yuv );
-    else
+    if( !p_sys->b_decoded_first_keyframe )
+        return NULL; /* Wait until we've decoded the first keyframe */
+
+    if( th_decode_ycbcr_out( p_sys->tcx, ycbcr ) ) /* returns 0 on success */
         return NULL;
 
     /* Get a new picture */
     p_pic = decoder_NewPicture( p_dec );
     if( !p_pic ) return NULL;
 
-    theora_CopyPicture( p_pic, &yuv );
+    theora_CopyPicture( p_pic, ycbcr );
 
     p_pic->date = p_sys->i_pts;
 
@@ -460,12 +491,29 @@ static void ParseTheoraComments( decoder_t *p_dec )
 {
     char *psz_name, *psz_value, *psz_comment;
     int i = 0;
-
+    /* Regarding the th_comment structure: */
+
+    /* The metadata is stored as a series of (tag, value) pairs, in
+       length-encoded string vectors. The first occurrence of the '='
+       character delimits the tag and value. A particular tag may
+       occur more than once, and order is significant. The character
+       set encoding for the strings is always UTF-8, but the tag names
+       are limited to ASCII, and treated as case-insensitive. See the
+       Theora specification, Section 6.3.3 for details. */
+
+    /* In filling in this structure, th_decode_headerin() will
+       null-terminate the user_comment strings for safety. However,
+       the bitstream format itself treats them as 8-bit clean vectors,
+       possibly containing null characters, and so the length array
+       should be treated as their authoritative length. */
     while ( i < p_dec->p_sys->tc.comments )
     {
-        psz_comment = strdup( p_dec->p_sys->tc.user_comments[i] );
+        int clen = p_dec->p_sys->tc.comment_lengths[i];
+        if ( clen <= 0 || clen >= INT_MAX ) { i++; continue; }
+        psz_comment = (char *)malloc( clen + 1 );
         if( !psz_comment )
             break;
+        memcpy( (void*)psz_comment, (void*)p_dec->p_sys->tc.user_comments[i], clen + 1 );
         psz_name = psz_comment;
         psz_value = strchr( psz_comment, '=' );
         if( psz_value )
@@ -475,6 +523,8 @@ static void ParseTheoraComments( decoder_t *p_dec )
 
             if( !p_dec->p_description )
                 p_dec->p_description = vlc_meta_New();
+            /* TODO:  Since psz_value can contain NULLs see if there is an
+             * instance where we need to preserve the full length of this string */
             if( p_dec->p_description )
                 vlc_meta_AddExtra( p_dec->p_description, psz_name, psz_value );
         }
@@ -491,9 +541,10 @@ static void CloseDecoder( vlc_object_t *p_this )
     decoder_t *p_dec = (decoder_t *)p_this;
     decoder_sys_t *p_sys = p_dec->p_sys;
 
-    theora_info_clear( &p_sys->ti );
-    theora_comment_clear( &p_sys->tc );
-
+    th_info_clear(&p_sys->ti);
+    th_comment_clear(&p_sys->tc);
+    th_decode_free(p_sys->tcx);
+    p_sys->tcx = NULL;
     free( p_sys );
 }
 
@@ -502,22 +553,43 @@ static void CloseDecoder( vlc_object_t *p_this )
  *                     picture_t structure.
  *****************************************************************************/
 static void theora_CopyPicture( picture_t *p_pic,
-                                yuv_buffer *yuv )
+                                th_ycbcr_buffer ycbcr )
 {
-    int i_plane, i_line, i_dst_stride, i_src_stride;
+    int i_plane, i_planes, i_line, i_dst_stride, i_src_stride;
     uint8_t *p_dst, *p_src;
+    /* th_img_plane
+       int  width   The width of this plane.
+       int  height  The height of this plane.
+       int  stride  The offset in bytes between successive rows.
+       unsigned char *data  A pointer to the beginning of the first row.
+
+       Detailed Description
+
+       A buffer for a single color plane in an uncompressed image.
 
-    for( i_plane = 0; i_plane < p_pic->i_planes; i_plane++ )
+       This contains the image data in a left-to-right, top-down
+       format. Each row of pixels is stored contiguously in memory,
+       but successive rows need not be. Use stride to compute the
+       offset of the next row. The encoder accepts both positive
+       stride values (top-down in memory) and negative (bottom-up in
+       memory). The decoder currently always generates images with
+       positive strides.
+
+       typedef th_img_plane th_ycbcr_buffer[3]
+    */
+
+    i_planes = p_pic->i_planes < 3 ? p_pic->i_planes : 3;
+    for( i_plane = 0; i_plane < i_planes; i_plane++ )
     {
         p_dst = p_pic->p[i_plane].p_pixels;
-        p_src = i_plane ? (i_plane - 1 ? yuv->v : yuv->u ) : yuv->y;
+        p_src = ycbcr[i_plane].data;
         i_dst_stride  = p_pic->p[i_plane].i_pitch;
-        i_src_stride  = i_plane ? yuv->uv_stride : yuv->y_stride;
-
-        for( i_line = 0; i_line < p_pic->p[i_plane].i_lines; i_line++ )
+        i_src_stride  = ycbcr[i_plane].stride;
+        for( i_line = 0;
+             i_line < __MIN(p_pic->p[i_plane].i_lines, ycbcr[i_plane].height);
+             i_line++ )
         {
-            vlc_memcpy( p_dst, p_src,
-                        i_plane ? yuv->uv_width : yuv->y_width );
+            vlc_memcpy( p_dst, p_src, ycbcr[i_plane].width );
             p_src += i_src_stride;
             p_dst += i_dst_stride;
         }
@@ -537,10 +609,9 @@ struct encoder_sys_t
     /*
      * Theora properties
      */
-    theora_info      ti;                        /* theora bitstream settings */
-    theora_comment   tc;                            /* theora comment header */
-    theora_state     td;                   /* theora bitstream user comments */
-
+    th_info      ti;                     /* theora bitstream settings */
+    th_comment   tc;                     /* theora comment header */
+    th_enc_ctx   *tcx;                   /* theora context */
     int i_width, i_height;
 };
 
@@ -552,6 +623,11 @@ static int OpenEncoder( vlc_object_t *p_this )
     encoder_t *p_enc = (encoder_t *)p_this;
     encoder_sys_t *p_sys;
     int i_quality;
+    int t_flags;
+    int max_enc_level = 0;
+    int keyframe_freq_force = 64;
+    ogg_packet header;
+    int status;
 
     if( p_enc->fmt_out.i_codec != VLC_CODEC_THEORA &&
         !p_enc->b_force )
@@ -574,30 +650,30 @@ static int OpenEncoder( vlc_object_t *p_this )
     if( i_quality > 10 ) i_quality = 10;
     if( i_quality < 0 ) i_quality = 0;
 
-    theora_info_init( &p_sys->ti );
+    th_info_init( &p_sys->ti );
 
-    p_sys->ti.width = p_enc->fmt_in.video.i_width;
-    p_sys->ti.height = p_enc->fmt_in.video.i_height;
+    p_sys->ti.frame_width = p_enc->fmt_in.video.i_width;
+    p_sys->ti.frame_height = p_enc->fmt_in.video.i_height;
 
-    if( p_sys->ti.width % 16 || p_sys->ti.height % 16 )
+    if( p_sys->ti.frame_width % 16 || p_sys->ti.frame_height % 16 )
     {
         /* Pictures from the transcoder should always have a pitch
          * which is a multiple of 16 */
-        p_sys->ti.width = (p_sys->ti.width + 15) >> 4 << 4;
-        p_sys->ti.height = (p_sys->ti.height + 15) >> 4 << 4;
+        p_sys->ti.frame_width = (p_sys->ti.frame_width + 15) >> 4 << 4;
+        p_sys->ti.frame_height = (p_sys->ti.frame_height + 15) >> 4 << 4;
 
         msg_Dbg( p_enc, "padding video from %dx%d to %dx%d",
                  p_enc->fmt_in.video.i_width, p_enc->fmt_in.video.i_height,
-                 p_sys->ti.width, p_sys->ti.height );
+                 p_sys->ti.frame_width, p_sys->ti.frame_height );
     }
 
-    p_sys->ti.frame_width = p_enc->fmt_in.video.i_width;
-    p_sys->ti.frame_height = p_enc->fmt_in.video.i_height;
-    p_sys->ti.offset_x = 0 /*frame_x_offset*/;
-    p_sys->ti.offset_y = 0 /*frame_y_offset*/;
+    p_sys->ti.pic_width = p_enc->fmt_in.video.i_width;
+    p_sys->ti.pic_height = p_enc->fmt_in.video.i_height;
+    p_sys->ti.pic_x = 0 /*frame_x_offset*/;
+    p_sys->ti.pic_y = 0 /*frame_y_offset*/;
 
-    p_sys->i_width = p_sys->ti.width;
-    p_sys->i_height = p_sys->ti.height;
+    p_sys->i_width = p_sys->ti.frame_width;
+    p_sys->i_height = p_sys->ti.frame_height;
 
     if( !p_enc->fmt_in.video.i_frame_rate ||
         !p_enc->fmt_in.video.i_frame_rate_base )
@@ -629,6 +705,12 @@ static int OpenEncoder( vlc_object_t *p_this )
     p_sys->ti.target_bitrate = p_enc->fmt_out.i_bitrate;
     p_sys->ti.quality = ((float)i_quality) * 6.3;
 
+
+    p_sys->tcx = th_encode_alloc( &p_sys->ti );
+    th_comment_init( &p_sys->tc );
+
+    /* These are no longer supported here: */
+    /*
     p_sys->ti.dropframes_p = 0;
     p_sys->ti.quick_p = 1;
     p_sys->ti.keyframe_auto_p = 1;
@@ -638,22 +720,25 @@ static int OpenEncoder( vlc_object_t *p_this )
     p_sys->ti.keyframe_auto_threshold = 80;
     p_sys->ti.keyframe_mindistance = 8;
     p_sys->ti.noise_sensitivity = 1;
+    */
 
-    theora_encode_init( &p_sys->td, &p_sys->ti );
-    theora_comment_init( &p_sys->tc );
+    t_flags = TH_RATECTL_CAP_OVERFLOW; /* default is TH_RATECTL_CAP_OVERFLOW | TL_RATECTL_DROP_FRAMES */
+    /* Turn off dropframes */
+    th_encode_ctl( p_sys->tcx, TH_ENCCTL_SET_RATE_FLAGS, &t_flags, sizeof(t_flags) );
 
-    /* Create and store headers */
-    for( int i = 0; i < 3; i++ )
-    {
-        ogg_packet header;
+    /* turn on fast encoding */
+    if ( !th_encode_ctl( p_sys->tcx, TH_ENCCTL_GET_SPLEVEL_MAX, &max_enc_level,
+                sizeof(max_enc_level) ) ) /* returns 0 on success */
+        th_encode_ctl( p_sys->tcx, TH_ENCCTL_SET_SPLEVEL, &max_enc_level, sizeof(max_enc_level) );
 
-        if( i == 0 )
-            theora_encode_header( &p_sys->td, &header );
-        else if( i == 1 )
-            theora_encode_comment( &p_sys->tc, &header );
-        else
-            theora_encode_tables( &p_sys->td, &header );
+    /* Set forced distance between key frames */
+    th_encode_ctl( p_sys->tcx, TH_ENCCTL_SET_KEYFRAME_FREQUENCY_FORCE,
+                   &keyframe_freq_force, sizeof(keyframe_freq_force) );
 
+    /* Create and store headers */
+    while ( ( status = th_encode_flushheader( p_sys->tcx, &p_sys->tc, &header ) ) )
+    {
+        if ( status < 0 ) return VLC_EGENERIC;
         if( xiph_AppendHeaders( &p_enc->fmt_out.i_extra, &p_enc->fmt_out.p_extra,
                                 header.bytes, header.packet ) )
         {
@@ -674,7 +759,7 @@ static block_t *Encode( encoder_t *p_enc, picture_t *p_pict )
     encoder_sys_t *p_sys = p_enc->p_sys;
     ogg_packet oggpacket;
     block_t *p_block;
-    yuv_buffer yuv;
+    th_ycbcr_buffer ycbcr;
     int i;
 
     if( !p_pict ) return NULL;
@@ -734,32 +819,35 @@ static block_t *Encode( encoder_t *p_enc, picture_t *p_pict )
     /* Theora is a one-frame-in, one-frame-out system. Submit a frame
      * for compression and pull out the packet. */
 
-    yuv.y_width  = p_sys->i_width;
-    yuv.y_height = p_sys->i_height;
-    yuv.y_stride = p_pict->p[0].i_pitch;
+    ycbcr[0].width = p_sys->i_width;
+    ycbcr[0].height = p_sys->i_height;
+    ycbcr[0].stride = p_pict->p[0].i_pitch;
+    ycbcr[0].data = p_pict->p[0].p_pixels;
 
-    yuv.uv_width  = p_sys->i_width / 2;
-    yuv.uv_height = p_sys->i_height / 2;
-    yuv.uv_stride = p_pict->p[1].i_pitch;
+    ycbcr[1].width = p_sys->i_width / 2;
+    ycbcr[1].height = p_sys->i_height / 2;
+    ycbcr[1].stride = p_pict->p[1].i_pitch;
+    ycbcr[1].data = p_pict->p[1].p_pixels;
 
-    yuv.y = p_pict->p[0].p_pixels;
-    yuv.u = p_pict->p[1].p_pixels;
-    yuv.v = p_pict->p[2].p_pixels;
+    ycbcr[2].width = p_sys->i_width / 2;
+    ycbcr[2].height = p_sys->i_height / 2;
+    ycbcr[2].stride = p_pict->p[1].i_pitch;
+    ycbcr[2].data = p_pict->p[2].p_pixels;
 
-    if( theora_encode_YUVin( &p_sys->td, &yuv ) < 0 )
+    if( th_encode_ycbcr_in( p_sys->tcx, ycbcr ) < 0 )
     {
         msg_Warn( p_enc, "failed encoding a frame" );
         return NULL;
     }
 
-    theora_encode_packetout( &p_sys->td, 0, &oggpacket );
+    th_encode_packetout( p_sys->tcx, 0, &oggpacket );
 
     /* Ogg packet to block */
     p_block = block_New( p_enc, oggpacket.bytes );
     memcpy( p_block->p_buffer, oggpacket.packet, oggpacket.bytes );
     p_block->i_dts = p_block->i_pts = p_pict->date;
 
-    if( theora_packet_iskeyframe( &oggpacket ) )
+    if( th_packet_iskeyframe( &oggpacket ) )
     {
         p_block->i_flags |= BLOCK_FLAG_TYPE_I;
     }
@@ -775,8 +863,9 @@ static void CloseEncoder( vlc_object_t *p_this )
     encoder_t *p_enc = (encoder_t *)p_this;
     encoder_sys_t *p_sys = p_enc->p_sys;
 
-    theora_info_clear( &p_sys->ti );
-    theora_comment_clear( &p_sys->tc );
-
+    th_info_clear(&p_sys->ti);
+    th_comment_clear(&p_sys->tc);
+    th_encode_free(p_sys->tcx);
+    p_sys->tcx = NULL;
     free( p_sys );
 }