svq3: rip out the svq3-relevant parts of pred_motion() out of h264

[ffmpeg] / libavcodec / mxpegdec.c

diff --git a/libavcodec/mxpegdec.c b/libavcodec/mxpegdec.c
index 92fd244ec74454c2044acaa6e8d6c33fd07a0241..a8ef6d0e0d64b132d9c92ea364996db653786c3f 100644 (file)
--- a/libavcodec/mxpegdec.c
+++ b/libavcodec/mxpegdec.c
@@ -25,12 +25,13 @@
  * MxPEG decoder
  */
 
+#include "internal.h"
 #include "mjpeg.h"
 #include "mjpegdec.h"
 
 typedef struct MXpegDecodeContext {
     MJpegDecodeContext jpg;
-    AVFrame picture[2]; /* pictures array */
+    AVFrame *picture[2]; /* pictures array */
     int picture_index; /* index of current picture */
     int got_sof_data; /* true if SOF data successfully parsed */
     int got_mxm_bitmask; /* true if MXM bitmask available */
@@ -41,17 +42,39 @@ typedef struct MXpegDecodeContext {
     unsigned mb_width, mb_height; /* size of picture in MB's from MXM header */
 } MXpegDecodeContext;
 
-static av_cold int mxpeg_decode_init(AVCodecContext *avctx)
+static av_cold int mxpeg_decode_end(AVCodecContext *avctx)
 {
     MXpegDecodeContext *s = avctx->priv_data;
+    MJpegDecodeContext *jpg = &s->jpg;
+    int i;
 
-    s->picture[0].reference = s->picture[1].reference = 3;
-    s->jpg.picture_ptr      = &s->picture[0];
-    ff_mjpeg_decode_init(avctx);
+    jpg->picture_ptr = NULL;
+    ff_mjpeg_decode_end(avctx);
+
+    for (i = 0; i < 2; ++i)
+        av_frame_free(&s->picture[i]);
+
+    av_freep(&s->mxm_bitmask);
+    av_freep(&s->completion_bitmask);
 
     return 0;
 }
 
+static av_cold int mxpeg_decode_init(AVCodecContext *avctx)
+{
+    MXpegDecodeContext *s = avctx->priv_data;
+
+    s->picture[0] = av_frame_alloc();
+    s->picture[1] = av_frame_alloc();
+    if (!s->picture[0] || !s->picture[1]) {
+        mxpeg_decode_end(avctx);
+        return AVERROR(ENOMEM);
+    }
+
+    s->jpg.picture_ptr      = s->picture[0];
+    return ff_mjpeg_decode_init(avctx);
+}
+
 static int mxpeg_decode_app(MXpegDecodeContext *s,
                             const uint8_t *buf_ptr, int buf_size)
 {
@@ -157,7 +180,7 @@ static int mxpeg_check_dimensions(MXpegDecodeContext *s, MJpegDecodeContext *jpg
 }
 
 static int mxpeg_decode_frame(AVCodecContext *avctx,
-                          void *data, int *data_size,
+                          void *data, int *got_frame,
                           AVPacket *avpkt)
 {
     const uint8_t *buf = avpkt->data;
@@ -168,7 +191,6 @@ static int mxpeg_decode_frame(AVCodecContext *avctx,
     const uint8_t *unescaped_buf_ptr;
     int unescaped_buf_size;
     int start_code;
-    AVFrame *picture = data;
     int ret;
 
     buf_ptr = buf;
@@ -249,9 +271,9 @@ static int mxpeg_decode_frame(AVCodecContext *avctx,
                         break;
                     }
                     /* use stored SOF data to allocate current picture */
-                    if (jpg->picture_ptr->data[0])
-                        avctx->release_buffer(avctx, jpg->picture_ptr);
-                    if (avctx->get_buffer(avctx, jpg->picture_ptr) < 0) {
+                    av_frame_unref(jpg->picture_ptr);
+                    if (ff_get_buffer(avctx, jpg->picture_ptr,
+                                      AV_GET_BUFFER_FLAG_REF) < 0) {
                         av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
                         return AVERROR(ENOMEM);
                     }
@@ -264,23 +286,24 @@ static int mxpeg_decode_frame(AVCodecContext *avctx,
                 }
 
                 if (s->got_mxm_bitmask) {
-                    AVFrame *reference_ptr = &s->picture[s->picture_index ^ 1];
+                    AVFrame *reference_ptr = s->picture[s->picture_index ^ 1];
                     if (mxpeg_check_dimensions(s, jpg, reference_ptr) < 0)
                         break;
 
                     /* allocate dummy reference picture if needed */
                     if (!reference_ptr->data[0] &&
-                        avctx->get_buffer(avctx, reference_ptr) < 0) {
+                        ff_get_buffer(avctx, reference_ptr,
+                                      AV_GET_BUFFER_FLAG_REF) < 0) {
                         av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
                         return AVERROR(ENOMEM);
                     }
 
                     ret = ff_mjpeg_decode_sos(jpg, s->mxm_bitmask, reference_ptr);
-                    if (ret < 0 && avctx->error_recognition >= FF_ER_EXPLODE)
+                    if (ret < 0 && (avctx->err_recognition & AV_EF_EXPLODE))
                         return ret;
                 } else {
                     ret = ff_mjpeg_decode_sos(jpg, NULL, NULL);
-                    if (ret < 0 && avctx->error_recognition >= FF_ER_EXPLODE)
+                    if (ret < 0 && (avctx->err_recognition & AV_EF_EXPLODE))
                         return ret;
                 }
 
@@ -294,51 +317,34 @@ static int mxpeg_decode_frame(AVCodecContext *avctx,
 
 the_end:
     if (jpg->got_picture) {
-        *data_size = sizeof(AVFrame);
-        *picture = *jpg->picture_ptr;
+        int ret = av_frame_ref(data, jpg->picture_ptr);
+        if (ret < 0)
+            return ret;
+        *got_frame = 1;
+
         s->picture_index ^= 1;
-        jpg->picture_ptr = &s->picture[s->picture_index];
+        jpg->picture_ptr = s->picture[s->picture_index];
 
         if (!s->has_complete_frame) {
             if (!s->got_mxm_bitmask)
                 s->has_complete_frame = 1;
             else
-                *data_size = 0;
+                *got_frame = 0;
         }
     }
 
     return buf_ptr - buf;
 }
 
-static av_cold int mxpeg_decode_end(AVCodecContext *avctx)
-{
-    MXpegDecodeContext *s = avctx->priv_data;
-    MJpegDecodeContext *jpg = &s->jpg;
-    int i;
-
-    jpg->picture_ptr = NULL;
-    ff_mjpeg_decode_end(avctx);
-
-    for (i = 0; i < 2; ++i) {
-        if (s->picture[i].data[0])
-            avctx->release_buffer(avctx, &s->picture[i]);
-    }
-
-    av_freep(&s->mxm_bitmask);
-    av_freep(&s->completion_bitmask);
-
-    return 0;
-}
-
 AVCodec ff_mxpeg_decoder = {
     .name           = "mxpeg",
     .long_name      = NULL_IF_CONFIG_SMALL("Mobotix MxPEG video"),
     .type           = AVMEDIA_TYPE_VIDEO,
-    .id             = CODEC_ID_MXPEG,
+    .id             = AV_CODEC_ID_MXPEG,
     .priv_data_size = sizeof(MXpegDecodeContext),
     .init           = mxpeg_decode_init,
     .close          = mxpeg_decode_end,
     .decode         = mxpeg_decode_frame,
-    .capabilities   = CODEC_CAP_DR1,
-    .max_lowres     = 3
+    .capabilities   = AV_CODEC_CAP_DR1,
+    .caps_internal  = FF_CODEC_CAP_INIT_THREADSAFE,
 };