From afa21a12bf084f905187615706b0a8d92bc98661 Mon Sep 17 00:00:00 2001
From: Anton Khirnov <anton@khirnov.net>
Date: Sat, 9 Nov 2013 10:14:46 +0100
Subject: p*menc: use the AVFrame API properly.

---
 libavcodec/pamenc.c | 53 ++++++++++++++++++++++++++++++++---------------------
 1 file changed, 32 insertions(+), 21 deletions(-)

(limited to 'libavcodec/pamenc.c')

diff --git a/libavcodec/pamenc.c b/libavcodec/pamenc.c
index 29c923ad0c..8535d3d235 100644
--- a/libavcodec/pamenc.c
+++ b/libavcodec/pamenc.c
@@ -22,14 +22,12 @@
 #include "avcodec.h"
 #include "bytestream.h"
 #include "internal.h"
-#include "pnm.h"
-
 
 static int pam_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
                             const AVFrame *pict, int *got_packet)
 {
-    PNMContext *s     = avctx->priv_data;
-    AVFrame * const p = &s->picture;
+    uint8_t *bytestream_start, *bytestream, *bytestream_end;
+    const AVFrame * const p = pict;
     int i, h, w, n, linesize, depth, maxval, ret;
     const char *tuple_type;
     uint8_t *ptr;
@@ -41,13 +39,9 @@ static int pam_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
         return ret;
     }
 
-    *p           = *pict;
-    p->pict_type = AV_PICTURE_TYPE_I;
-    p->key_frame = 1;
-
-    s->bytestream_start =
-    s->bytestream       = pkt->data;
-    s->bytestream_end   = pkt->data + pkt->size;
+    bytestream_start =
+    bytestream       = pkt->data;
+    bytestream_end   = pkt->data + pkt->size;
 
     h = avctx->height;
     w = avctx->width;
@@ -79,10 +73,10 @@ static int pam_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
     default:
         return -1;
     }
-    snprintf(s->bytestream, s->bytestream_end - s->bytestream,
+    snprintf(bytestream, bytestream_end - bytestream,
              "P7\nWIDTH %d\nHEIGHT %d\nDEPTH %d\nMAXVAL %d\nTUPLTYPE %s\nENDHDR\n",
              w, h, depth, maxval, tuple_type);
-    s->bytestream += strlen(s->bytestream);
+    bytestream += strlen(bytestream);
 
     ptr      = p->data[0];
     linesize = p->linesize[0];
@@ -94,33 +88,50 @@ static int pam_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
         for (i = 0; i < h; i++) {
             for (j = 0; j < w; j++) {
                 v = ((uint32_t *)ptr)[j];
-                bytestream_put_be24(&s->bytestream, v);
-                *s->bytestream++ = v >> 24;
+                bytestream_put_be24(&bytestream, v);
+                *bytestream++ = v >> 24;
             }
             ptr += linesize;
         }
     } else {
         for (i = 0; i < h; i++) {
-            memcpy(s->bytestream, ptr, n);
-            s->bytestream += n;
-            ptr           += linesize;
+            memcpy(bytestream, ptr, n);
+            bytestream += n;
+            ptr        += linesize;
         }
     }
 
-    pkt->size   = s->bytestream - s->bytestream_start;
+    pkt->size   = bytestream - bytestream_start;
     pkt->flags |= AV_PKT_FLAG_KEY;
     *got_packet = 1;
     return 0;
 }
 
+static av_cold int pam_encode_init(AVCodecContext *avctx)
+{
+    avctx->coded_frame = av_frame_alloc();
+    if (!avctx->coded_frame)
+        return AVERROR(ENOMEM);
+
+    avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I;
+    avctx->coded_frame->key_frame = 1;
+
+    return 0;
+}
+
+static av_cold int pam_encode_close(AVCodecContext *avctx)
+{
+    av_frame_free(&avctx->coded_frame);
+    return 0;
+}
 
 AVCodec ff_pam_encoder = {
     .name           = "pam",
     .long_name      = NULL_IF_CONFIG_SMALL("PAM (Portable AnyMap) image"),
     .type           = AVMEDIA_TYPE_VIDEO,
     .id             = AV_CODEC_ID_PAM,
-    .priv_data_size = sizeof(PNMContext),
-    .init           = ff_pnm_init,
+    .init           = pam_encode_init,
+    .close          = pam_encode_close,
     .encode2        = pam_encode_frame,
     .pix_fmts       = (const enum AVPixelFormat[]){
         AV_PIX_FMT_RGB24, AV_PIX_FMT_RGB32, AV_PIX_FMT_GRAY8, AV_PIX_FMT_MONOWHITE,
-- 
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