lavc: add Intel libmfx-based MPEG2 decoder.

[ffmpeg] / libavcodec / cavsdec.c

diff --git a/libavcodec/cavsdec.c b/libavcodec/cavsdec.c
index e91ff6c877684cbab5f0d2a24a63793fd666136c..cf21a8bb0398552766be43420959d2f8a490bf66 100644 (file)
--- a/libavcodec/cavsdec.c
+++ b/libavcodec/cavsdec.c
@@ -473,7 +473,7 @@ static inline void mv_pred_direct(AVSContext *h, cavs_vector *pmv_fw,
 {
     cavs_vector *pmv_bw = pmv_fw + MV_BWD_OFFS;
     int den = h->direct_den[col_mv->ref];
-    int m = col_mv->x >> 31;
+    int m = FF_SIGNBIT(col_mv->x);
 
     pmv_fw->dist = h->dist[1];
     pmv_bw->dist = h->dist[0];
@@ -482,7 +482,7 @@ static inline void mv_pred_direct(AVSContext *h, cavs_vector *pmv_fw,
     /* scale the co-located motion vector according to its temporal span */
     pmv_fw->x =     (((den + (den * col_mv->x * pmv_fw->dist ^ m) - m - 1) >> 14) ^ m) - m;
     pmv_bw->x = m - (((den + (den * col_mv->x * pmv_bw->dist ^ m) - m - 1) >> 14) ^ m);
-    m = col_mv->y >> 31;
+    m = FF_SIGNBIT(col_mv->y);
     pmv_fw->y =     (((den + (den * col_mv->y * pmv_fw->dist ^ m) - m - 1) >> 14) ^ m) - m;
     pmv_bw->y = m - (((den + (den * col_mv->y * pmv_bw->dist ^ m) - m - 1) >> 14) ^ m);
 }
@@ -530,7 +530,7 @@ static inline int dequant(AVSContext *h, int16_t *level_buf, uint8_t *run_buf,
             av_log(h->avctx, AV_LOG_ERROR,
                    "position out of block bounds at pic %d MB(%d,%d)\n",
                    h->cur.poc, h->mbx, h->mby);
-            return -1;
+            return AVERROR_INVALIDDATA;
         }
         dst[scantab[pos]] = (level_buf[coeff_num] * mul + round) >> shift;
     }
@@ -550,7 +550,7 @@ static int decode_residual_block(AVSContext *h, GetBitContext *gb,
                                  const struct dec_2dvlc *r, int esc_golomb_order,
                                  int qp, uint8_t *dst, int stride)
 {
-    int i, level_code, esc_code, level, run, mask;
+    int i, level_code, esc_code, level, run, mask, ret;
     int16_t level_buf[65];
     uint8_t run_buf[65];
     int16_t *block = h->block;
@@ -577,11 +577,11 @@ static int decode_residual_block(AVSContext *h, GetBitContext *gb,
         level_buf[i] = level;
         run_buf[i]   = run;
     }
-    if (dequant(h, level_buf, run_buf, block, dequant_mul[qp],
-                dequant_shift[qp], i))
-        return -1;
+    if ((ret = dequant(h, level_buf, run_buf, block, dequant_mul[qp],
+                      dequant_shift[qp], i)) < 0)
+        return ret;
     h->cdsp.cavs_idct8_add(dst, block, stride);
-    h->dsp.clear_block(block);
+    h->bdsp.clear_block(block);
     return 0;
 }
 
@@ -602,9 +602,9 @@ static inline int decode_residual_inter(AVSContext *h)
 
     /* get coded block pattern */
     int cbp = get_ue_golomb(&h->gb);
-    if (cbp > 63) {
-        av_log(h->avctx, AV_LOG_ERROR, "illegal inter cbp\n");
-        return -1;
+    if (cbp > 63 || cbp < 0) {
+        av_log(h->avctx, AV_LOG_ERROR, "illegal inter cbp %d\n", cbp);
+        return AVERROR_INVALIDDATA;
     }
     h->cbp = cbp_tab[cbp][1];
 
@@ -666,16 +666,16 @@ static int decode_mb_i(AVSContext *h, int cbp_code)
     pred_mode_uv = get_ue_golomb(gb);
     if (pred_mode_uv > 6) {
         av_log(h->avctx, AV_LOG_ERROR, "illegal intra chroma pred mode\n");
-        return -1;
+        return AVERROR_INVALIDDATA;
     }
     ff_cavs_modify_mb_i(h, &pred_mode_uv);
 
     /* get coded block pattern */
     if (h->cur.f->pict_type == AV_PICTURE_TYPE_I)
         cbp_code = get_ue_golomb(gb);
-    if (cbp_code > 63) {
+    if (cbp_code > 63 || cbp_code < 0) {
         av_log(h->avctx, AV_LOG_ERROR, "illegal intra cbp\n");
-        return -1;
+        return AVERROR_INVALIDDATA;
     }
     h->cbp = cbp_tab[cbp_code][0];
     if (h->cbp && !h->qp_fixed)
@@ -928,6 +928,7 @@ static inline int check_for_slice(AVSContext *h)
 
 static int decode_pic(AVSContext *h)
 {
+    int ret;
     int skip_count    = -1;
     enum cavs_mb mb_type;
 
@@ -943,12 +944,12 @@ static int decode_pic(AVSContext *h)
         h->cur.f->pict_type = get_bits(&h->gb, 2) + AV_PICTURE_TYPE_I;
         if (h->cur.f->pict_type > AV_PICTURE_TYPE_B) {
             av_log(h->avctx, AV_LOG_ERROR, "illegal picture type\n");
-            return -1;
+            return AVERROR_INVALIDDATA;
         }
         /* make sure we have the reference frames we need */
         if (!h->DPB[0].f->data[0] ||
            (!h->DPB[1].f->data[0] && h->cur.f->pict_type == AV_PICTURE_TYPE_B))
-            return -1;
+            return AVERROR_INVALIDDATA;
     } else {
         h->cur.f->pict_type = AV_PICTURE_TYPE_I;
         if (get_bits1(&h->gb))
@@ -964,8 +965,10 @@ static int decode_pic(AVSContext *h)
             skip_bits(&h->gb, 1); //marker_bit
     }
 
-    ff_get_buffer(h->avctx, h->cur.f, h->cur.f->pict_type == AV_PICTURE_TYPE_B ?
-                  0 : AV_GET_BUFFER_FLAG_REF);
+    ret = ff_get_buffer(h->avctx, h->cur.f, h->cur.f->pict_type == AV_PICTURE_TYPE_B ?
+                        0 : AV_GET_BUFFER_FLAG_REF);
+    if (ret < 0)
+        return ret;
 
     if (!h->edge_emu_buffer) {
         int alloc_size = FFALIGN(FFABS(h->cur.f->linesize[0]) + 32, 32);
@@ -1103,8 +1106,7 @@ static int decode_seq_header(AVSContext *h)
     h->low_delay =  get_bits1(&h->gb);
     h->mb_width  = (h->width  + 15) >> 4;
     h->mb_height = (h->height + 15) >> 4;
-    h->avctx->time_base.den = ff_mpeg12_frame_rate_tab[frame_rate_code].num;
-    h->avctx->time_base.num = ff_mpeg12_frame_rate_tab[frame_rate_code].den;
+    h->avctx->framerate = ff_mpeg12_frame_rate_tab[frame_rate_code];
     h->avctx->width  = h->width;
     h->avctx->height = h->height;
     if (!h->top_qp)
@@ -1193,6 +1195,7 @@ static int cavs_decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
 
 AVCodec ff_cavs_decoder = {
     .name           = "cavs",
+    .long_name      = NULL_IF_CONFIG_SMALL("Chinese AVS (Audio Video Standard) (AVS1-P2, JiZhun profile)"),
     .type           = AVMEDIA_TYPE_VIDEO,
     .id             = AV_CODEC_ID_CAVS,
     .priv_data_size = sizeof(AVSContext),
@@ -1201,5 +1204,4 @@ AVCodec ff_cavs_decoder = {
     .decode         = cavs_decode_frame,
     .capabilities   = CODEC_CAP_DR1 | CODEC_CAP_DELAY,
     .flush          = cavs_flush,
-    .long_name      = NULL_IF_CONFIG_SMALL("Chinese AVS (Audio Video Standard) (AVS1-P2, JiZhun profile)"),
 };