From 8b37a1bc306c1d5a3cc92e9dc04fb95d5d9a0298 Mon Sep 17 00:00:00 2001 From: trav90 Date: Thu, 26 Apr 2018 16:49:15 -0500 Subject: [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. --- media/ffvpx/libavcodec/bitstream_filter.c | 185 ++++++++++++++++++++++++++++++ 1 file changed, 185 insertions(+) create mode 100644 media/ffvpx/libavcodec/bitstream_filter.c (limited to 'media/ffvpx/libavcodec/bitstream_filter.c') 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 + * + * 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 + +#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 -- cgit v1.2.3