ffmpeg-2.8.5

git-svn-id: svn://kolibrios.org@6147 a494cfbc-eb01-0410-851d-a64ba20cac60
2016-02-05 22:08:02 +00:00
parent a08f61ddb9
commit a4b787f4b8
5429 changed files with 1356786 additions and 0 deletions
--- a/contrib/sdk/sources/ffmpeg/ffmpeg-2.8/libavcodec/libwebpenc.c
+++ b/contrib/sdk/sources/ffmpeg/ffmpeg-2.8/libavcodec/libwebpenc.c
@@ -0,0 +1,112 @@
+/*
+ * WebP encoding support via libwebp
+ * Copyright (c) 2013 Justin Ruggles <justin.ruggles@gmail.com>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * WebP encoder using libwebp (WebPEncode API)
+ */
+
+#include "libwebpenc_common.h"
+
+typedef LibWebPContextCommon LibWebPContext;
+
+static av_cold int libwebp_encode_init(AVCodecContext *avctx)
+{
+    return ff_libwebp_encode_init_common(avctx);
+}
+
+static int libwebp_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
+                                const AVFrame *frame, int *got_packet)
+{
+    LibWebPContext *s  = avctx->priv_data;
+    WebPPicture *pic = NULL;
+    AVFrame *alt_frame = NULL;
+    WebPMemoryWriter mw = { 0 };
+
+    int ret = ff_libwebp_get_frame(avctx, s, frame, &alt_frame, &pic);
+    if (ret < 0)
+        goto end;
+
+    WebPMemoryWriterInit(&mw);
+    pic->custom_ptr = &mw;
+    pic->writer     = WebPMemoryWrite;
+
+    ret = WebPEncode(&s->config, pic);
+    if (!ret) {
+        av_log(avctx, AV_LOG_ERROR, "WebPEncode() failed with error: %d\n",
+               pic->error_code);
+        ret = ff_libwebp_error_to_averror(pic->error_code);
+        goto end;
+    }
+
+    ret = ff_alloc_packet2(avctx, pkt, mw.size, mw.size);
+    if (ret < 0)
+        goto end;
+    memcpy(pkt->data, mw.mem, mw.size);
+
+    pkt->flags |= AV_PKT_FLAG_KEY;
+    *got_packet = 1;
+
+end:
+#if (WEBP_ENCODER_ABI_VERSION > 0x0203)
+    WebPMemoryWriterClear(&mw);
+#else
+    free(mw.mem); /* must use free() according to libwebp documentation */
+#endif
+    WebPPictureFree(pic);
+    av_freep(&pic);
+    av_frame_free(&alt_frame);
+
+    return ret;
+}
+
+static int libwebp_encode_close(AVCodecContext *avctx)
+{
+    LibWebPContextCommon *s  = avctx->priv_data;
+    av_frame_free(&s->ref);
+
+    return 0;
+}
+
+static const AVClass class = {
+    .class_name = "libwebp",
+    .item_name  = av_default_item_name,
+    .option     = options,
+    .version    = LIBAVUTIL_VERSION_INT,
+};
+
+AVCodec ff_libwebp_encoder = {
+    .name           = "libwebp",
+    .long_name      = NULL_IF_CONFIG_SMALL("libwebp WebP image"),
+    .type           = AVMEDIA_TYPE_VIDEO,
+    .id             = AV_CODEC_ID_WEBP,
+    .priv_data_size = sizeof(LibWebPContext),
+    .init           = libwebp_encode_init,
+    .encode2        = libwebp_encode_frame,
+    .close          = libwebp_encode_close,
+    .pix_fmts       = (const enum AVPixelFormat[]) {
+        AV_PIX_FMT_RGB32,
+        AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUVA420P,
+        AV_PIX_FMT_NONE
+    },
+    .priv_class     = &class,
+    .defaults       = libwebp_defaults,
+};