libschroedinger: Properly use AVFrame API

Rather than copying data buffers around, allocate a proper frame, and
use the standard AVFrame functions. This effectively makes the decoder
capable of direct rendering.
Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>

libavcodec/libschroedinger.c

@@ -26,6 +26,7 @@
 #include "libavutil/attributes.h"
 #include "libavutil/mem.h"
 #include "libschroedinger.h"
+#include "internal.h"
 
 static const SchroVideoFormatInfo ff_schro_video_format_info[] = {
     { 640,  480,  24000, 1001},
@@ -167,19 +168,14 @@ int ff_get_schro_frame_format (SchroChromaFormat schro_pix_fmt,
 
 static void free_schro_frame(SchroFrame *frame, void *priv)
 {
-    AVPicture *p_pic = priv;
-
-    if (!p_pic)
-        return;
-
-    avpicture_free(p_pic);
-    av_freep(&p_pic);
+    AVFrame *p_pic = priv;
+    av_frame_free(&p_pic);
 }
 
 SchroFrame *ff_create_schro_frame(AVCodecContext *avctx,
                                   SchroFrameFormat schro_frame_fmt)
 {
-    AVPicture *p_pic;
+    AVFrame *p_pic;
     SchroFrame *p_frame;
     int y_width, uv_width;
     int y_height, uv_height;
@@ -190,10 +186,15 @@ SchroFrame *ff_create_schro_frame(AVCodecContext *avctx,
     uv_width  = y_width  >> (SCHRO_FRAME_FORMAT_H_SHIFT(schro_frame_fmt));
     uv_height = y_height >> (SCHRO_FRAME_FORMAT_V_SHIFT(schro_frame_fmt));
 
-    p_pic = av_mallocz(sizeof(AVPicture));
+    p_pic = av_frame_alloc();
     if (!p_pic)
         return NULL;
-    avpicture_alloc(p_pic, avctx->pix_fmt, y_width, y_height);
+
+    if (ff_get_buffer(avctx, p_pic, AV_GET_BUFFER_FLAG_REF) < 0) {
+        av_frame_free(&p_pic);
+        av_log(avctx, AV_LOG_ERROR, "Unable to allocate buffer\n");
+        return NULL;
+    }
 
     p_frame         = schro_frame_new();
     p_frame->format = schro_frame_fmt;

libavcodec/libschroedingerdec.c

@@ -387,6 +387,6 @@ AVCodec ff_libschroedinger_decoder = {
     .init           = libschroedinger_decode_init,
     .close          = libschroedinger_decode_close,
     .decode         = libschroedinger_decode_frame,
-    .capabilities   = AV_CODEC_CAP_DELAY,
+    .capabilities   = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_DR1,
     .flush          = libschroedinger_flush,
 };

libavcodec/libschroedingerenc.c

@@ -32,6 +32,8 @@
 #include <schroedinger/schrovideoformat.h>
 
 #include "libavutil/attributes.h"
+#include "libavutil/imgutils.h"
+
 #include "avcodec.h"
 #include "internal.h"
 #include "libschroedinger.h"
@@ -154,9 +156,9 @@ static av_cold int libschroedinger_encode_init(AVCodecContext *avctx)
     p_schro_params->format->frame_rate_numerator   = avctx->time_base.den;
     p_schro_params->format->frame_rate_denominator = avctx->time_base.num;
 
-    p_schro_params->frame_size = avpicture_get_size(avctx->pix_fmt,
-                                                    avctx->width,
-                                                    avctx->height);
+    p_schro_params->frame_size = av_image_get_buffer_size(avctx->pix_fmt,
+                                                          avctx->width,
+                                                          avctx->height, 1);
 
     if (!avctx->gop_size) {
         schro_encoder_setting_set_double(p_schro_params->encoder,
@@ -233,17 +235,17 @@ static SchroFrame *libschroedinger_frame_from_data(AVCodecContext *avctx,
                                                    const AVFrame *frame)
 {
     SchroEncoderParams *p_schro_params = avctx->priv_data;
-    SchroFrame *in_frame;
-    /* Input line size may differ from what the codec supports. Especially
-     * when transcoding from one format to another. So use avpicture_layout
-     * to copy the frame. */
-    in_frame = ff_create_schro_frame(avctx, p_schro_params->frame_format);
-
-    if (in_frame)
-        avpicture_layout((const AVPicture *)frame, avctx->pix_fmt,
-                          avctx->width, avctx->height,
-                          in_frame->components[0].data,
-                          p_schro_params->frame_size);
+    SchroFrame *in_frame = ff_create_schro_frame(avctx,
+                                                 p_schro_params->frame_format);
+
+    if (in_frame) {
+        /* Copy input data to SchroFrame buffers (they match the ones
+         * referenced by the AVFrame stored in priv) */
+        if (av_frame_copy(in_frame->priv, frame) < 0) {
+            av_log(avctx, AV_LOG_ERROR, "Failed to copy input data\n");
+            return NULL;
+        }
+    }
 
     return in_frame;
 }