gifenc: switch to encode2().

libavcodec/gif.c

@@ -43,6 +43,7 @@
 
 #include "avcodec.h"
 #include "bytestream.h"
+#include "internal.h"
 #include "lzw.h"
 
 /* The GIF format uses reversed order for bitstreams... */
@@ -141,20 +142,32 @@ static av_cold int gif_encode_init(AVCodecContext *avctx)
 }
 
 /* better than nothing gif encoder */
-static int gif_encode_frame(AVCodecContext *avctx, unsigned char *outbuf, int buf_size, void *data)
+static int gif_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
+                            const AVFrame *pict, int *got_packet)
 {
     GIFContext *s = avctx->priv_data;
-    AVFrame *pict = data;
     AVFrame *const p = (AVFrame *)&s->picture;
-    uint8_t *outbuf_ptr = outbuf;
-    uint8_t *end = outbuf + buf_size;
+    uint8_t *outbuf_ptr, *end;
+    int ret;
+
+    if ((ret = ff_alloc_packet(pkt, avctx->width*avctx->height*7/5 + FF_MIN_BUFFER_SIZE)) < 0) {
+        av_log(avctx, AV_LOG_ERROR, "Error getting output packet.\n");
+        return ret;
+    }
+    outbuf_ptr = pkt->data;
+    end        = pkt->data + pkt->size;
 
     *p = *pict;
     p->pict_type = AV_PICTURE_TYPE_I;
     p->key_frame = 1;
     gif_image_write_header(avctx, &outbuf_ptr, (uint32_t *)pict->data[1]);
     gif_image_write_image(avctx, &outbuf_ptr, end, pict->data[0], pict->linesize[0]);
-    return outbuf_ptr - outbuf;
+
+    pkt->size   = outbuf_ptr - pkt->data;
+    pkt->flags |= AV_PKT_FLAG_KEY;
+    *got_packet = 1;
+
+    return 0;
 }
 
 static int gif_encode_close(AVCodecContext *avctx)
@@ -172,7 +185,7 @@ AVCodec ff_gif_encoder = {
     .id             = CODEC_ID_GIF,
     .priv_data_size = sizeof(GIFContext),
     .init           = gif_encode_init,
-    .encode         = gif_encode_frame,
+    .encode2        = gif_encode_frame,
     .close          = gif_encode_close,
     .pix_fmts= (const enum PixelFormat[]){PIX_FMT_RGB8, PIX_FMT_BGR8, PIX_FMT_RGB4_BYTE, PIX_FMT_BGR4_BYTE, PIX_FMT_GRAY8, PIX_FMT_PAL8, PIX_FMT_NONE},
     .long_name= NULL_IF_CONFIG_SMALL("GIF (Graphics Interchange Format)"),