[ffvpx] Update ffvp9/ffvp8 to 3.4.2-release

Structure of code was slightly modified so that it should be no longer necessary to re-generate the config_*.h files, greatly simplifying the resync process in the future.

1 files changed, 185 insertions, 0 deletions

diff --git a/media/ffvpx/libavcodec/bitstream_filter.c b/media/ffvpx/libavcodec/bitstream_filter.c
new file mode 100644
index 000000000..8599b90d4
--- /dev/null
+++ b/media/ffvpx/libavcodec/bitstream_filter.c
@@ -0,0 +1,185 @@
+/*
+ * copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
+ *
+ * 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
+ */
+
+#include <string.h>
+
+#include "avcodec.h"
+#include "libavutil/internal.h"
+#include "libavutil/mem.h"
+#include "libavutil/opt.h"
+
+#if FF_API_OLD_BSF
+FF_DISABLE_DEPRECATION_WARNINGS
+
+AVBitStreamFilter *av_bitstream_filter_next(const AVBitStreamFilter *f)
+{
+    const AVBitStreamFilter *filter = NULL;
+    void *opaque = NULL;
+
+    while (filter != f)
+        filter = av_bsf_next(&opaque);
+
+    return av_bsf_next(&opaque);
+}
+
+void av_register_bitstream_filter(AVBitStreamFilter *bsf)
+{
+}
+
+typedef struct BSFCompatContext {
+    AVBSFContext *ctx;
+    int extradata_updated;
+} BSFCompatContext;
+
+AVBitStreamFilterContext *av_bitstream_filter_init(const char *name)
+{
+    AVBitStreamFilterContext *ctx = NULL;
+    BSFCompatContext         *priv = NULL;
+    const AVBitStreamFilter *bsf;
+
+    bsf = av_bsf_get_by_name(name);
+    if (!bsf)
+        return NULL;
+
+    ctx = av_mallocz(sizeof(*ctx));
+    if (!ctx)
+        return NULL;
+
+    priv = av_mallocz(sizeof(*priv));
+    if (!priv)
+        goto fail;
+
+
+    ctx->filter    = bsf;
+    ctx->priv_data = priv;
+
+    return ctx;
+
+fail:
+    if (priv)
+        av_bsf_free(&priv->ctx);
+    av_freep(&priv);
+    av_freep(&ctx);
+    return NULL;
+}
+
+void av_bitstream_filter_close(AVBitStreamFilterContext *bsfc)
+{
+    BSFCompatContext *priv;
+
+    if (!bsfc)
+        return;
+
+    priv = bsfc->priv_data;
+
+    av_bsf_free(&priv->ctx);
+    av_freep(&bsfc->priv_data);
+    av_free(bsfc);
+}
+
+int av_bitstream_filter_filter(AVBitStreamFilterContext *bsfc,
+                               AVCodecContext *avctx, const char *args,
+                               uint8_t **poutbuf, int *poutbuf_size,
+                               const uint8_t *buf, int buf_size, int keyframe)
+{
+    BSFCompatContext *priv = bsfc->priv_data;
+    AVPacket pkt = { 0 };
+    int ret;
+
+    if (!priv->ctx) {
+        ret = av_bsf_alloc(bsfc->filter, &priv->ctx);
+        if (ret < 0)
+            return ret;
+
+        ret = avcodec_parameters_from_context(priv->ctx->par_in, avctx);
+        if (ret < 0)
+            return ret;
+
+        priv->ctx->time_base_in = avctx->time_base;
+
+        if (bsfc->args && bsfc->filter->priv_class) {
+            const AVOption *opt = av_opt_next(priv->ctx->priv_data, NULL);
+            const char * shorthand[2] = {NULL};
+
+            if (opt)
+                shorthand[0] = opt->name;
+
+            ret = av_opt_set_from_string(priv->ctx->priv_data, bsfc->args, shorthand, "=", ":");
+            if (ret < 0)
+                return ret;
+        }
+
+        ret = av_bsf_init(priv->ctx);
+        if (ret < 0)
+            return ret;
+    }
+
+    pkt.data = buf;
+    pkt.size = buf_size;
+
+    ret = av_bsf_send_packet(priv->ctx, &pkt);
+    if (ret < 0)
+        return ret;
+
+    *poutbuf      = NULL;
+    *poutbuf_size = 0;
+
+    ret = av_bsf_receive_packet(priv->ctx, &pkt);
+    if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF)
+        return 0;
+    else if (ret < 0)
+        return ret;
+
+    *poutbuf = av_malloc(pkt.size + AV_INPUT_BUFFER_PADDING_SIZE);
+    if (!*poutbuf) {
+        av_packet_unref(&pkt);
+        return AVERROR(ENOMEM);
+    }
+
+    *poutbuf_size = pkt.size;
+    memcpy(*poutbuf, pkt.data, pkt.size);
+
+    av_packet_unref(&pkt);
+
+    /* drain all the remaining packets we cannot return */
+    while (ret >= 0) {
+        ret = av_bsf_receive_packet(priv->ctx, &pkt);
+        av_packet_unref(&pkt);
+    }
+
+    if (!priv->extradata_updated) {
+        /* update extradata in avctx from the output codec parameters */
+        if (priv->ctx->par_out->extradata_size && (!args || !strstr(args, "private_spspps_buf"))) {
+            av_freep(&avctx->extradata);
+            avctx->extradata_size = 0;
+            avctx->extradata = av_mallocz(priv->ctx->par_out->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
+            if (!avctx->extradata)
+                return AVERROR(ENOMEM);
+            memcpy(avctx->extradata, priv->ctx->par_out->extradata, priv->ctx->par_out->extradata_size);
+            avctx->extradata_size = priv->ctx->par_out->extradata_size;
+        }
+
+        priv->extradata_updated = 1;
+    }
+
+    return 1;
+}
+FF_ENABLE_DEPRECATION_WARNINGS
+#endif