tscc2: Fix an out of array access
[ffmpeg.git] / libavcodec / vp3.c
index 462a482..90532cb 100644 (file)
 
 #include "libavutil/imgutils.h"
 #include "avcodec.h"
+#include "internal.h"
 #include "dsputil.h"
 #include "get_bits.h"
 
 #include "vp3data.h"
+#include "vp3dsp.h"
 #include "xiph.h"
 #include "thread.h"
 
 #define FRAGMENT_PIXELS 8
 
-static av_cold int vp3_decode_end(AVCodecContext *avctx);
-
 //FIXME split things out into their own arrays
 typedef struct Vp3Fragment {
     int16_t dc;
@@ -136,6 +136,7 @@ typedef struct Vp3DecodeContext {
     AVFrame current_frame;
     int keyframe;
     DSPContext dsp;
+    VP3DSPContext vp3dsp;
     int flipped_image;
     int last_slice_end;
     int skip_loop_filter;
@@ -254,6 +255,63 @@ typedef struct Vp3DecodeContext {
  * VP3 specific functions
  ************************************************************************/
 
+static void vp3_decode_flush(AVCodecContext *avctx)
+{
+    Vp3DecodeContext *s = avctx->priv_data;
+
+    if (s->golden_frame.data[0]) {
+        if (s->golden_frame.data[0] == s->last_frame.data[0])
+            memset(&s->last_frame, 0, sizeof(AVFrame));
+        if (s->current_frame.data[0] == s->golden_frame.data[0])
+            memset(&s->current_frame, 0, sizeof(AVFrame));
+        ff_thread_release_buffer(avctx, &s->golden_frame);
+    }
+    if (s->last_frame.data[0]) {
+        if (s->current_frame.data[0] == s->last_frame.data[0])
+            memset(&s->current_frame, 0, sizeof(AVFrame));
+        ff_thread_release_buffer(avctx, &s->last_frame);
+    }
+    if (s->current_frame.data[0])
+        ff_thread_release_buffer(avctx, &s->current_frame);
+}
+
+static av_cold int vp3_decode_end(AVCodecContext *avctx)
+{
+    Vp3DecodeContext *s = avctx->priv_data;
+    int i;
+
+    av_free(s->superblock_coding);
+    av_free(s->all_fragments);
+    av_free(s->coded_fragment_list[0]);
+    av_free(s->dct_tokens_base);
+    av_free(s->superblock_fragments);
+    av_free(s->macroblock_coding);
+    av_free(s->motion_val[0]);
+    av_free(s->motion_val[1]);
+    av_free(s->edge_emu_buffer);
+
+    if (avctx->internal->is_copy)
+        return 0;
+
+    for (i = 0; i < 16; i++) {
+        ff_free_vlc(&s->dc_vlc[i]);
+        ff_free_vlc(&s->ac_vlc_1[i]);
+        ff_free_vlc(&s->ac_vlc_2[i]);
+        ff_free_vlc(&s->ac_vlc_3[i]);
+        ff_free_vlc(&s->ac_vlc_4[i]);
+    }
+
+    ff_free_vlc(&s->superblock_run_length_vlc);
+    ff_free_vlc(&s->fragment_run_length_vlc);
+    ff_free_vlc(&s->mode_code_vlc);
+    ff_free_vlc(&s->motion_vector_vlc);
+
+    /* release all frames */
+    vp3_decode_flush(avctx);
+
+    return 0;
+}
+
 /*
  * This function sets up all of the various blocks mappings:
  * superblocks <-> fragments, macroblocks <-> fragments,
@@ -340,6 +398,7 @@ static void init_loop_filter(Vp3DecodeContext *s)
     int value;
 
     filter_limit = s->filter_limit_values[s->qps[0]];
+    assert(filter_limit < 128);
 
     /* set up the bounding values */
     memset(s->bounding_values_array, 0, 256 * sizeof(int));
@@ -890,7 +949,7 @@ static int unpack_vlcs(Vp3DecodeContext *s, GetBitContext *gb,
             /* decode a VLC into a token */
             token = get_vlc2(gb, vlc_table, 11, 3);
             /* use the token to get a zero run, a coefficient, and an eob run */
-            if (token <= 6) {
+            if ((unsigned) token <= 6U) {
                 eob_run = eob_run_base[token];
                 if (eob_run_get_bits[token])
                     eob_run += get_bits(gb, eob_run_get_bits[token]);
@@ -908,7 +967,7 @@ static int unpack_vlcs(Vp3DecodeContext *s, GetBitContext *gb,
                     coeff_i        += eob_run;
                     eob_run = 0;
                 }
-            } else {
+            } else if (token >= 0) {
                 bits_to_get = coeff_get_bits[token];
                 if (bits_to_get)
                     bits_to_get = get_bits(gb, bits_to_get);
@@ -942,6 +1001,10 @@ static int unpack_vlcs(Vp3DecodeContext *s, GetBitContext *gb,
                 for (i = coeff_index+1; i <= coeff_index+zero_run; i++)
                     s->num_coded_frags[plane][i]--;
                 coeff_i++;
+            } else {
+                av_log(s->avctx, AV_LOG_ERROR,
+                       "Invalid token %d\n", token);
+                return -1;
             }
     }
 
@@ -991,6 +1054,8 @@ static int unpack_dct_coeffs(Vp3DecodeContext *s, GetBitContext *gb)
     /* unpack the Y plane DC coefficients */
     residual_eob_run = unpack_vlcs(s, gb, &s->dc_vlc[dc_y_table], 0,
         0, residual_eob_run);
+    if (residual_eob_run < 0)
+        return residual_eob_run;
 
     /* reverse prediction of the Y-plane DC coefficients */
     reverse_dc_prediction(s, 0, s->fragment_width[0], s->fragment_height[0]);
@@ -998,8 +1063,12 @@ static int unpack_dct_coeffs(Vp3DecodeContext *s, GetBitContext *gb)
     /* unpack the C plane DC coefficients */
     residual_eob_run = unpack_vlcs(s, gb, &s->dc_vlc[dc_c_table], 0,
         1, residual_eob_run);
+    if (residual_eob_run < 0)
+        return residual_eob_run;
     residual_eob_run = unpack_vlcs(s, gb, &s->dc_vlc[dc_c_table], 0,
         2, residual_eob_run);
+    if (residual_eob_run < 0)
+        return residual_eob_run;
 
     /* reverse prediction of the C-plane DC coefficients */
     if (!(s->avctx->flags & CODEC_FLAG_GRAY))
@@ -1036,11 +1105,17 @@ static int unpack_dct_coeffs(Vp3DecodeContext *s, GetBitContext *gb)
     for (i = 1; i <= 63; i++) {
             residual_eob_run = unpack_vlcs(s, gb, y_tables[i], i,
                 0, residual_eob_run);
+            if (residual_eob_run < 0)
+                return residual_eob_run;
 
             residual_eob_run = unpack_vlcs(s, gb, c_tables[i], i,
                 1, residual_eob_run);
+            if (residual_eob_run < 0)
+                return residual_eob_run;
             residual_eob_run = unpack_vlcs(s, gb, c_tables[i], i,
                 2, residual_eob_run);
+            if (residual_eob_run < 0)
+                return residual_eob_run;
     }
 
     return 0;
@@ -1229,14 +1304,14 @@ static void apply_loop_filter(Vp3DecodeContext *s, int plane, int ystart, int ye
             {
                 /* do not perform left edge filter for left columns frags */
                 if (x > 0) {
-                    s->dsp.vp3_h_loop_filter(
+                    s->vp3dsp.h_loop_filter(
                         plane_data + 8*x,
                         stride, bounding_values);
                 }
 
                 /* do not perform top edge filter for top row fragments */
                 if (y > 0) {
-                    s->dsp.vp3_v_loop_filter(
+                    s->vp3dsp.v_loop_filter(
                         plane_data + 8*x,
                         stride, bounding_values);
                 }
@@ -1246,7 +1321,7 @@ static void apply_loop_filter(Vp3DecodeContext *s, int plane, int ystart, int ye
                  * in this frame (it will be filtered in next iteration) */
                 if ((x < width - 1) &&
                     (s->all_fragments[fragment + 1].coding_method == MODE_COPY)) {
-                    s->dsp.vp3_h_loop_filter(
+                    s->vp3dsp.h_loop_filter(
                         plane_data + 8*x + 8,
                         stride, bounding_values);
                 }
@@ -1256,7 +1331,7 @@ static void apply_loop_filter(Vp3DecodeContext *s, int plane, int ystart, int ye
                  * in this frame (it will be filtered in the next row) */
                 if ((y < height - 1) &&
                     (s->all_fragments[fragment + width].coding_method == MODE_COPY)) {
-                    s->dsp.vp3_v_loop_filter(
+                    s->vp3dsp.v_loop_filter(
                         plane_data + 8*x + 8*stride,
                         stride, bounding_values);
                 }
@@ -1291,6 +1366,10 @@ static inline int vp3_dequant(Vp3DecodeContext *s, Vp3Fragment *frag,
         case 1: // zero run
             s->dct_tokens[plane][i]++;
             i += (token >> 2) & 0x7f;
+            if (i > 63) {
+                av_log(s->avctx, AV_LOG_ERROR, "Coefficient index overflow\n");
+                return i;
+            }
             block[perm[i]] = (token >> 9) * dequantizer[perm[i]];
             i++;
             break;
@@ -1302,6 +1381,8 @@ static inline int vp3_dequant(Vp3DecodeContext *s, Vp3Fragment *frag,
             return i;
         }
     } while (i < 64);
+    // return value is expected to be a valid level
+    i--;
 end:
     // the actual DC+prediction is in the fragment structure
     block[0] = frag->dc * s->qmat[0][inter][plane][0];
@@ -1313,10 +1394,10 @@ end:
  */
 static void vp3_draw_horiz_band(Vp3DecodeContext *s, int y)
 {
-    int h, cy;
-    int offset[4];
+    int h, cy, i;
+    int offset[AV_NUM_DATA_POINTERS];
 
-    if (HAVE_PTHREADS && s->avctx->active_thread_type&FF_THREAD_FRAME) {
+    if (HAVE_THREADS && s->avctx->active_thread_type&FF_THREAD_FRAME) {
         int y_flipped = s->flipped_image ? s->avctx->height-y : y;
 
         // At the end of the frame, report INT_MAX instead of the height of the frame.
@@ -1340,7 +1421,8 @@ static void vp3_draw_horiz_band(Vp3DecodeContext *s, int y)
     offset[0] = s->current_frame.linesize[0]*y;
     offset[1] = s->current_frame.linesize[1]*cy;
     offset[2] = s->current_frame.linesize[2]*cy;
-    offset[3] = 0;
+    for (i = 3; i < AV_NUM_DATA_POINTERS; i++)
+        offset[i] = 0;
 
     emms_c();
     s->avctx->draw_horiz_band(s->avctx, &s->current_frame, offset, y, 3, h);
@@ -1400,7 +1482,7 @@ static void render_slice(Vp3DecodeContext *s, int slice)
         int fragment_width    = s->fragment_width[!!plane];
         int fragment_height   = s->fragment_height[!!plane];
         int fragment_start    = s->fragment_start[plane];
-        int do_await          = !plane && HAVE_PTHREADS && (s->avctx->active_thread_type&FF_THREAD_FRAME);
+        int do_await          = !plane && HAVE_THREADS && (s->avctx->active_thread_type&FF_THREAD_FRAME);
 
         if (!s->flipped_image) stride = -stride;
         if (CONFIG_GRAY && plane && (s->avctx->flags & CODEC_FLAG_GRAY))
@@ -1493,21 +1575,25 @@ static void render_slice(Vp3DecodeContext *s, int slice)
                     /* invert DCT and place (or add) in final output */
 
                     if (s->all_fragments[i].coding_method == MODE_INTRA) {
-                        vp3_dequant(s, s->all_fragments + i, plane, 0, block);
-                        if(s->avctx->idct_algo!=FF_IDCT_VP3)
-                            block[0] += 128<<3;
-                        s->dsp.idct_put(
+                        int index;
+                        index = vp3_dequant(s, s->all_fragments + i, plane, 0, block);
+                        if (index > 63)
+                            continue;
+                        s->vp3dsp.idct_put(
                             output_plane + first_pixel,
                             stride,
                             block);
                     } else {
-                        if (vp3_dequant(s, s->all_fragments + i, plane, 1, block)) {
-                        s->dsp.idct_add(
+                        int index = vp3_dequant(s, s->all_fragments + i, plane, 1, block);
+                        if (index > 63)
+                            continue;
+                        if (index > 0) {
+                        s->vp3dsp.idct_add(
                             output_plane + first_pixel,
                             stride,
                             block);
                         } else {
-                            s->dsp.vp3_idct_dc_add(output_plane + first_pixel, stride, block);
+                            s->vp3dsp.idct_dc_add(output_plane + first_pixel, stride, block);
                         }
                     }
                 } else {
@@ -1571,9 +1657,6 @@ static av_cold int allocate_tables(AVCodecContext *avctx)
     return 0;
 }
 
-/*
- * This is the ffmpeg/libavcodec API init function.
- */
 static av_cold int vp3_decode_init(AVCodecContext *avctx)
 {
     Vp3DecodeContext *s = avctx->priv_data;
@@ -1590,13 +1673,13 @@ static av_cold int vp3_decode_init(AVCodecContext *avctx)
     s->avctx = avctx;
     s->width = FFALIGN(avctx->width, 16);
     s->height = FFALIGN(avctx->height, 16);
-    if (avctx->pix_fmt == PIX_FMT_NONE)
-        avctx->pix_fmt = PIX_FMT_YUV420P;
+    if (avctx->pix_fmt == AV_PIX_FMT_NONE)
+        avctx->pix_fmt = AV_PIX_FMT_YUV420P;
     avctx->chroma_sample_location = AVCHROMA_LOC_CENTER;
-    if(avctx->idct_algo==FF_IDCT_AUTO)
-        avctx->idct_algo=FF_IDCT_VP3;
-    dsputil_init(&s->dsp, avctx);
+    ff_dsputil_init(&s->dsp, avctx);
+    ff_vp3dsp_init(&s->vp3dsp, avctx->flags);
 
+    ff_init_scantable_permutation(s->dsp.idct_permutation, s->vp3dsp.idct_perm);
     ff_init_scantable(s->dsp.idct_permutation, &s->scantable, ff_zigzag_direct);
 
     /* initialize to an impossible value which will force a recalculation
@@ -1777,10 +1860,15 @@ static int vp3_update_thread_context(AVCodecContext *dst, const AVCodecContext *
     Vp3DecodeContext *s = dst->priv_data, *s1 = src->priv_data;
     int qps_changed = 0, i, err;
 
+#define copy_fields(to, from, start_field, end_field) memcpy(&to->start_field, &from->start_field, (char*)&to->end_field - (char*)&to->start_field)
+
     if (!s1->current_frame.data[0]
         ||s->width != s1->width
-        ||s->height!= s1->height)
+        ||s->height!= s1->height) {
+        if (s != s1)
+            copy_fields(s, s1, golden_frame, current_frame);
         return -1;
+    }
 
     if (s != s1) {
         // init tables if the first frame hasn't been decoded
@@ -1796,8 +1884,6 @@ static int vp3_update_thread_context(AVCodecContext *dst, const AVCodecContext *
             memcpy(s->motion_val[1], s1->motion_val[1], c_fragment_count * sizeof(*s->motion_val[1]));
         }
 
-#define copy_fields(to, from, start_field, end_field) memcpy(&to->start_field, &from->start_field, (char*)&to->end_field - (char*)&to->start_field)
-
         // copy previous frame data
         copy_fields(s, s1, golden_frame, dsp);
 
@@ -1822,9 +1908,6 @@ static int vp3_update_thread_context(AVCodecContext *dst, const AVCodecContext *
     return 0;
 }
 
-/*
- * This is the ffmpeg/libavcodec API frame decode function.
- */
 static int vp3_decode_frame(AVCodecContext *avctx,
                             void *data, int *data_size,
                             AVPacket *avpkt)
@@ -1965,7 +2048,7 @@ static int vp3_decode_frame(AVCodecContext *avctx,
     *data_size=sizeof(AVFrame);
     *(AVFrame*)data= s->current_frame;
 
-    if (!HAVE_PTHREADS || !(s->avctx->active_thread_type&FF_THREAD_FRAME))
+    if (!HAVE_THREADS || !(s->avctx->active_thread_type&FF_THREAD_FRAME))
         update_frames(avctx);
 
     return buf_size;
@@ -1973,59 +2056,12 @@ static int vp3_decode_frame(AVCodecContext *avctx,
 error:
     ff_thread_report_progress(&s->current_frame, INT_MAX, 0);
 
-    if (!HAVE_PTHREADS || !(s->avctx->active_thread_type&FF_THREAD_FRAME))
+    if (!HAVE_THREADS || !(s->avctx->active_thread_type&FF_THREAD_FRAME))
         avctx->release_buffer(avctx, &s->current_frame);
 
     return -1;
 }
 
-/*
- * This is the ffmpeg/libavcodec API module cleanup function.
- */
-static av_cold int vp3_decode_end(AVCodecContext *avctx)
-{
-    Vp3DecodeContext *s = avctx->priv_data;
-    int i;
-
-    if (avctx->is_copy && !s->current_frame.data[0])
-        return 0;
-
-    av_free(s->superblock_coding);
-    av_free(s->all_fragments);
-    av_free(s->coded_fragment_list[0]);
-    av_free(s->dct_tokens_base);
-    av_free(s->superblock_fragments);
-    av_free(s->macroblock_coding);
-    av_free(s->motion_val[0]);
-    av_free(s->motion_val[1]);
-    av_free(s->edge_emu_buffer);
-
-    if (avctx->is_copy) return 0;
-
-    for (i = 0; i < 16; i++) {
-        free_vlc(&s->dc_vlc[i]);
-        free_vlc(&s->ac_vlc_1[i]);
-        free_vlc(&s->ac_vlc_2[i]);
-        free_vlc(&s->ac_vlc_3[i]);
-        free_vlc(&s->ac_vlc_4[i]);
-    }
-
-    free_vlc(&s->superblock_run_length_vlc);
-    free_vlc(&s->fragment_run_length_vlc);
-    free_vlc(&s->mode_code_vlc);
-    free_vlc(&s->motion_vector_vlc);
-
-    /* release all frames */
-    if (s->golden_frame.data[0])
-        ff_thread_release_buffer(avctx, &s->golden_frame);
-    if (s->last_frame.data[0] && s->last_frame.type != FF_BUFFER_TYPE_COPY)
-        ff_thread_release_buffer(avctx, &s->last_frame);
-    /* no need to release the current_frame since it will always be pointing
-     * to the same frame as either the golden or last frame */
-
-    return 0;
-}
-
 static int read_huffman_tree(AVCodecContext *avctx, GetBitContext *gb)
 {
     Vp3DecodeContext *s = avctx->priv_data;
@@ -2037,7 +2073,8 @@ static int read_huffman_tree(AVCodecContext *avctx, GetBitContext *gb)
             return -1;
         }
         token = get_bits(gb, 5);
-        //av_log(avctx, AV_LOG_DEBUG, "hti %d hbits %x token %d entry : %d size %d\n", s->hti, s->hbits, token, s->entries, s->huff_code_size);
+        av_dlog(avctx, "hti %d hbits %x token %d entry : %d size %d\n",
+                s->hti, s->hbits, token, s->entries, s->huff_code_size);
         s->huffman_table[s->hti][token][0] = s->hbits;
         s->huffman_table[s->hti][token][1] = s->huff_code_size;
         s->entries++;
@@ -2060,9 +2097,26 @@ static int read_huffman_tree(AVCodecContext *avctx, GetBitContext *gb)
     return 0;
 }
 
+static int vp3_init_thread_copy(AVCodecContext *avctx)
+{
+    Vp3DecodeContext *s = avctx->priv_data;
+
+    s->superblock_coding      = NULL;
+    s->all_fragments          = NULL;
+    s->coded_fragment_list[0] = NULL;
+    s->dct_tokens_base        = NULL;
+    s->superblock_fragments   = NULL;
+    s->macroblock_coding      = NULL;
+    s->motion_val[0]          = NULL;
+    s->motion_val[1]          = NULL;
+    s->edge_emu_buffer        = NULL;
+
+    return 0;
+}
+
 #if CONFIG_THEORA_DECODER
-static const enum PixelFormat theora_pix_fmts[4] = {
-    PIX_FMT_YUV420P, PIX_FMT_NONE, PIX_FMT_YUV422P, PIX_FMT_YUV444P
+static const enum AVPixelFormat theora_pix_fmts[4] = {
+    AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV444P
 };
 
 static int theora_decode_header(AVCodecContext *avctx, GetBitContext *gb)
@@ -2275,7 +2329,7 @@ static av_cold int theora_decode_init(AVCodecContext *avctx)
         return -1;
     }
 
-    if (ff_split_xiph_headers(avctx->extradata, avctx->extradata_size,
+    if (avpriv_split_xiph_headers(avctx->extradata, avctx->extradata_size,
                               42, header_start, header_len) < 0) {
         av_log(avctx, AV_LOG_ERROR, "Corrupt extradata\n");
         return -1;
@@ -2321,51 +2375,35 @@ static av_cold int theora_decode_init(AVCodecContext *avctx)
     return vp3_decode_init(avctx);
 }
 
-static void vp3_decode_flush(AVCodecContext *avctx)
-{
-    Vp3DecodeContext *s = avctx->priv_data;
-
-    if (s->golden_frame.data[0]) {
-        if (s->golden_frame.data[0] == s->last_frame.data[0])
-            memset(&s->last_frame, 0, sizeof(AVFrame));
-        if (s->current_frame.data[0] == s->golden_frame.data[0])
-            memset(&s->current_frame, 0, sizeof(AVFrame));
-        ff_thread_release_buffer(avctx, &s->golden_frame);
-    }
-    if (s->last_frame.data[0]) {
-        if (s->current_frame.data[0] == s->last_frame.data[0])
-            memset(&s->current_frame, 0, sizeof(AVFrame));
-        ff_thread_release_buffer(avctx, &s->last_frame);
-    }
-    if (s->current_frame.data[0])
-        ff_thread_release_buffer(avctx, &s->current_frame);
-}
-
 AVCodec ff_theora_decoder = {
-    .name           = "theora",
-    .type           = AVMEDIA_TYPE_VIDEO,
-    .id             = CODEC_ID_THEORA,
-    .priv_data_size = sizeof(Vp3DecodeContext),
-    .init           = theora_decode_init,
-    .close          = vp3_decode_end,
-    .decode         = vp3_decode_frame,
-    .capabilities   = CODEC_CAP_DR1 | CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_FRAME_THREADS,
-    .flush = vp3_decode_flush,
-    .long_name = NULL_IF_CONFIG_SMALL("Theora"),
+    .name                  = "theora",
+    .type                  = AVMEDIA_TYPE_VIDEO,
+    .id                    = AV_CODEC_ID_THEORA,
+    .priv_data_size        = sizeof(Vp3DecodeContext),
+    .init                  = theora_decode_init,
+    .close                 = vp3_decode_end,
+    .decode                = vp3_decode_frame,
+    .capabilities          = CODEC_CAP_DR1 | CODEC_CAP_DRAW_HORIZ_BAND |
+                             CODEC_CAP_FRAME_THREADS,
+    .flush                 = vp3_decode_flush,
+    .long_name             = NULL_IF_CONFIG_SMALL("Theora"),
+    .init_thread_copy      = ONLY_IF_THREADS_ENABLED(vp3_init_thread_copy),
     .update_thread_context = ONLY_IF_THREADS_ENABLED(vp3_update_thread_context)
 };
 #endif
 
 AVCodec ff_vp3_decoder = {
-    .name           = "vp3",
-    .type           = AVMEDIA_TYPE_VIDEO,
-    .id             = CODEC_ID_VP3,
-    .priv_data_size = sizeof(Vp3DecodeContext),
-    .init           = vp3_decode_init,
-    .close          = vp3_decode_end,
-    .decode         = vp3_decode_frame,
-    .capabilities   = CODEC_CAP_DR1 | CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_FRAME_THREADS,
-    .flush = vp3_decode_flush,
-    .long_name = NULL_IF_CONFIG_SMALL("On2 VP3"),
-    .update_thread_context = ONLY_IF_THREADS_ENABLED(vp3_update_thread_context)
+    .name                  = "vp3",
+    .type                  = AVMEDIA_TYPE_VIDEO,
+    .id                    = AV_CODEC_ID_VP3,
+    .priv_data_size        = sizeof(Vp3DecodeContext),
+    .init                  = vp3_decode_init,
+    .close                 = vp3_decode_end,
+    .decode                = vp3_decode_frame,
+    .capabilities          = CODEC_CAP_DR1 | CODEC_CAP_DRAW_HORIZ_BAND |
+                             CODEC_CAP_FRAME_THREADS,
+    .flush                 = vp3_decode_flush,
+    .long_name             = NULL_IF_CONFIG_SMALL("On2 VP3"),
+    .init_thread_copy      = ONLY_IF_THREADS_ENABLED(vp3_init_thread_copy),
+    .update_thread_context = ONLY_IF_THREADS_ENABLED(vp3_update_thread_context),
 };