lavc: add libdcadec decoder

[ffmpeg] / libavcodec / mss2.c

diff --git a/libavcodec/mss2.c b/libavcodec/mss2.c
index d9c04bea957f20aeadfbb8433945edadb44f4143..d71d30844a5a8a4f443968ba15748806c6c1c15a 100644 (file)
--- a/libavcodec/mss2.c
+++ b/libavcodec/mss2.c
@@ -26,7 +26,9 @@
 #include "libavutil/avassert.h"
 #include "error_resilience.h"
 #include "internal.h"
+#include "mpeg_er.h"
 #include "msmpeg4data.h"
+#include "qpeldsp.h"
 #include "vc1.h"
 #include "mss12.h"
 #include "mss2dsp.h"
@@ -34,9 +36,10 @@
 typedef struct MSS2Context {
     VC1Context     v;
     int            split_position;
-    AVFrame        last_pic;
+    AVFrame       *last_pic;
     MSS12Context   c;
     MSS2DSPContext dsp;
+    QpelDSPContext qdsp;
     SliceContext   sc[2];
 } MSS2Context;
 
@@ -377,13 +380,6 @@ static int decode_wmv9(AVCodecContext *avctx, const uint8_t *buf, int buf_size,
 
     ff_mpeg_flush(avctx);
 
-    if (s->current_picture_ptr == NULL || s->current_picture_ptr->f.data[0]) {
-        int i = ff_find_unused_picture(s, 0);
-        if (i < 0)
-            return i;
-        s->current_picture_ptr = &s->picture[i];
-    }
-
     init_get_bits(&s->gb, buf, buf_size * 8);
 
     s->loop_filter = avctx->skip_loop_filter < AVDISCARD_ALL;
@@ -400,8 +396,8 @@ static int decode_wmv9(AVCodecContext *avctx, const uint8_t *buf, int buf_size,
 
     avctx->pix_fmt = AV_PIX_FMT_YUV420P;
 
-    if ((ret = ff_MPV_frame_start(s, avctx)) < 0) {
-        av_log(v->s.avctx, AV_LOG_ERROR, "ff_MPV_frame_start error\n");
+    if ((ret = ff_mpv_frame_start(s, avctx)) < 0) {
+        av_log(v->s.avctx, AV_LOG_ERROR, "ff_mpv_frame_start error\n");
         avctx->pix_fmt = AV_PIX_FMT_RGB24;
         return ret;
     }
@@ -421,9 +417,9 @@ static int decode_wmv9(AVCodecContext *avctx, const uint8_t *buf, int buf_size,
 
     ff_er_frame_end(&s->er);
 
-    ff_MPV_frame_end(s);
+    ff_mpv_frame_end(s);
 
-    f = &s->current_picture.f;
+    f = s->current_picture.f;
 
     if (v->respic == 3) {
         ctx->dsp.upsample_plane(f->data[0], f->linesize[0], w,      h);
@@ -523,8 +519,8 @@ static int mss2_decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
         return AVERROR_INVALIDDATA;
 
     avctx->pix_fmt = is_555 ? AV_PIX_FMT_RGB555 : AV_PIX_FMT_RGB24;
-    if (ctx->last_pic.format != avctx->pix_fmt)
-        av_frame_unref(&ctx->last_pic);
+    if (ctx->last_pic->format != avctx->pix_fmt)
+        av_frame_unref(ctx->last_pic);
 
     if (has_wmv9) {
         bytestream2_init(&gB, buf, buf_size + ARITH2_PADDING);
@@ -603,20 +599,20 @@ static int mss2_decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
             return ret;
         }
 
-        if (ctx->last_pic.data[0]) {
-            av_assert0(frame->linesize[0] == ctx->last_pic.linesize[0]);
-            c->last_rgb_pic = ctx->last_pic.data[0] +
-                              ctx->last_pic.linesize[0] * (avctx->height - 1);
+        if (ctx->last_pic->data[0]) {
+            av_assert0(frame->linesize[0] == ctx->last_pic->linesize[0]);
+            c->last_rgb_pic = ctx->last_pic->data[0] +
+                              ctx->last_pic->linesize[0] * (avctx->height - 1);
         } else {
             av_log(avctx, AV_LOG_ERROR, "Missing keyframe\n");
             return AVERROR_INVALIDDATA;
         }
     } else {
-        if ((ret = ff_reget_buffer(avctx, &ctx->last_pic)) < 0) {
+        if ((ret = ff_reget_buffer(avctx, ctx->last_pic)) < 0) {
             av_log(avctx, AV_LOG_ERROR, "reget_buffer() failed\n");
             return ret;
         }
-        if ((ret = av_frame_ref(frame, &ctx->last_pic)) < 0)
+        if ((ret = av_frame_ref(frame, ctx->last_pic)) < 0)
             return ret;
 
         c->last_rgb_pic = NULL;
@@ -730,8 +726,8 @@ static int mss2_decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
         av_log(avctx, AV_LOG_WARNING, "buffer not fully consumed\n");
 
     if (c->mvX < 0 || c->mvY < 0) {
-        av_frame_unref(&ctx->last_pic);
-        ret = av_frame_ref(&ctx->last_pic, frame);
+        av_frame_unref(ctx->last_pic);
+        ret = av_frame_ref(ctx->last_pic, frame);
         if (ret < 0)
             return ret;
     }
@@ -747,8 +743,6 @@ static av_cold int wmv9_init(AVCodecContext *avctx)
     int ret;
 
     v->s.avctx    = avctx;
-    avctx->flags |= CODEC_FLAG_EMU_EDGE;
-    v->s.flags   |= CODEC_FLAG_EMU_EDGE;
 
     if ((ret = ff_vc1_init_common(v)) < 0)
         return ret;
@@ -779,7 +773,7 @@ static av_cold int wmv9_init(AVCodecContext *avctx)
 
     v->overlap         = 0;
 
-    v->s.resync_marker = 0;
+    v->resync_marker   = 0;
     v->rangered        = 0;
 
     v->s.max_b_frames = avctx->max_b_frames = 0;
@@ -796,8 +790,8 @@ static av_cold int wmv9_init(AVCodecContext *avctx)
         return ret;
 
     /* error concealment */
-    v->s.me.qpel_put = v->s.dsp.put_qpel_pixels_tab;
-    v->s.me.qpel_avg = v->s.dsp.avg_qpel_pixels_tab;
+    v->s.me.qpel_put = v->s.qdsp.put_qpel_pixels_tab;
+    v->s.me.qpel_avg = v->s.qdsp.avg_qpel_pixels_tab;
 
     return 0;
 }
@@ -806,7 +800,7 @@ static av_cold int mss2_decode_end(AVCodecContext *avctx)
 {
     MSS2Context *const ctx = avctx->priv_data;
 
-    av_frame_unref(&ctx->last_pic);
+    av_frame_free(&ctx->last_pic);
 
     ff_mss12_decode_end(&ctx->c);
     av_freep(&ctx->c.pal_pic);
@@ -836,10 +830,17 @@ static av_cold int mss2_decode_init(AVCodecContext *avctx)
         return ret;
     }
     ff_mss2dsp_init(&ctx->dsp);
+    ff_qpeldsp_init(&ctx->qdsp);
 
     avctx->pix_fmt = c->free_colours == 127 ? AV_PIX_FMT_RGB555
                                             : AV_PIX_FMT_RGB24;
 
+    ctx->last_pic = av_frame_alloc();
+    if (!ctx->last_pic) {
+        mss2_decode_end(avctx);
+        return AVERROR(ENOMEM);
+    }
+
     return 0;
 }