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authorjanekptacijarabaci <janekptacijarabaci@seznam.cz>2018-04-29 09:07:42 +0200
committerjanekptacijarabaci <janekptacijarabaci@seznam.cz>2018-04-29 09:07:42 +0200
commitaff03b0a67c41cf7af5df9c9eef715a8b27a2667 (patch)
treeaa2909ae4718f81c83c8cfb68c1f5a23485b3173 /media/ffvpx/libavcodec/bsf.c
parentbdb4ff581677ad1cd411b55a68c87534f9a64882 (diff)
parent11caf6ecb3cb8c84d2355a6c6e9580a290147e92 (diff)
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Merge branch 'master' of https://github.com/MoonchildProductions/UXP into js_dom_performance-resource-timing_1
Diffstat (limited to 'media/ffvpx/libavcodec/bsf.c')
-rw-r--r--media/ffvpx/libavcodec/bsf.c542
1 files changed, 542 insertions, 0 deletions
diff --git a/media/ffvpx/libavcodec/bsf.c b/media/ffvpx/libavcodec/bsf.c
new file mode 100644
index 000000000..38b423101
--- /dev/null
+++ b/media/ffvpx/libavcodec/bsf.c
@@ -0,0 +1,542 @@
+/*
+ * 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 "libavutil/log.h"
+#include "libavutil/mem.h"
+#include "libavutil/opt.h"
+#include "libavutil/avstring.h"
+#include "libavutil/bprint.h"
+
+#include "avcodec.h"
+#include "bsf.h"
+
+struct AVBSFInternal {
+ AVPacket *buffer_pkt;
+ int eof;
+};
+
+void av_bsf_free(AVBSFContext **pctx)
+{
+ AVBSFContext *ctx;
+
+ if (!pctx || !*pctx)
+ return;
+ ctx = *pctx;
+
+ if (ctx->filter->close)
+ ctx->filter->close(ctx);
+ if (ctx->filter->priv_class && ctx->priv_data)
+ av_opt_free(ctx->priv_data);
+
+ av_opt_free(ctx);
+
+ av_packet_free(&ctx->internal->buffer_pkt);
+ av_freep(&ctx->internal);
+ av_freep(&ctx->priv_data);
+
+ avcodec_parameters_free(&ctx->par_in);
+ avcodec_parameters_free(&ctx->par_out);
+
+ av_freep(pctx);
+}
+
+static void *bsf_child_next(void *obj, void *prev)
+{
+ AVBSFContext *ctx = obj;
+ if (!prev && ctx->filter->priv_class)
+ return ctx->priv_data;
+ return NULL;
+}
+
+static const AVClass bsf_class = {
+ .class_name = "AVBSFContext",
+ .item_name = av_default_item_name,
+ .version = LIBAVUTIL_VERSION_INT,
+ .child_next = bsf_child_next,
+ .child_class_next = ff_bsf_child_class_next,
+};
+
+const AVClass *av_bsf_get_class(void)
+{
+ return &bsf_class;
+}
+
+int av_bsf_alloc(const AVBitStreamFilter *filter, AVBSFContext **pctx)
+{
+ AVBSFContext *ctx;
+ int ret;
+
+ ctx = av_mallocz(sizeof(*ctx));
+ if (!ctx)
+ return AVERROR(ENOMEM);
+
+ ctx->av_class = &bsf_class;
+ ctx->filter = filter;
+
+ ctx->par_in = avcodec_parameters_alloc();
+ ctx->par_out = avcodec_parameters_alloc();
+ if (!ctx->par_in || !ctx->par_out) {
+ ret = AVERROR(ENOMEM);
+ goto fail;
+ }
+
+ ctx->internal = av_mallocz(sizeof(*ctx->internal));
+ if (!ctx->internal) {
+ ret = AVERROR(ENOMEM);
+ goto fail;
+ }
+
+ ctx->internal->buffer_pkt = av_packet_alloc();
+ if (!ctx->internal->buffer_pkt) {
+ ret = AVERROR(ENOMEM);
+ goto fail;
+ }
+
+ av_opt_set_defaults(ctx);
+
+ /* allocate priv data and init private options */
+ if (filter->priv_data_size) {
+ ctx->priv_data = av_mallocz(filter->priv_data_size);
+ if (!ctx->priv_data) {
+ ret = AVERROR(ENOMEM);
+ goto fail;
+ }
+ if (filter->priv_class) {
+ *(const AVClass **)ctx->priv_data = filter->priv_class;
+ av_opt_set_defaults(ctx->priv_data);
+ }
+ }
+
+ *pctx = ctx;
+ return 0;
+fail:
+ av_bsf_free(&ctx);
+ return ret;
+}
+
+int av_bsf_init(AVBSFContext *ctx)
+{
+ int ret, i;
+
+ /* check that the codec is supported */
+ if (ctx->filter->codec_ids) {
+ for (i = 0; ctx->filter->codec_ids[i] != AV_CODEC_ID_NONE; i++)
+ if (ctx->par_in->codec_id == ctx->filter->codec_ids[i])
+ break;
+ if (ctx->filter->codec_ids[i] == AV_CODEC_ID_NONE) {
+ const AVCodecDescriptor *desc = avcodec_descriptor_get(ctx->par_in->codec_id);
+ av_log(ctx, AV_LOG_ERROR, "Codec '%s' (%d) is not supported by the "
+ "bitstream filter '%s'. Supported codecs are: ",
+ desc ? desc->name : "unknown", ctx->par_in->codec_id, ctx->filter->name);
+ for (i = 0; ctx->filter->codec_ids[i] != AV_CODEC_ID_NONE; i++) {
+ desc = avcodec_descriptor_get(ctx->filter->codec_ids[i]);
+ av_log(ctx, AV_LOG_ERROR, "%s (%d) ",
+ desc ? desc->name : "unknown", ctx->filter->codec_ids[i]);
+ }
+ av_log(ctx, AV_LOG_ERROR, "\n");
+ return AVERROR(EINVAL);
+ }
+ }
+
+ /* initialize output parameters to be the same as input
+ * init below might overwrite that */
+ ret = avcodec_parameters_copy(ctx->par_out, ctx->par_in);
+ if (ret < 0)
+ return ret;
+
+ ctx->time_base_out = ctx->time_base_in;
+
+ if (ctx->filter->init) {
+ ret = ctx->filter->init(ctx);
+ if (ret < 0)
+ return ret;
+ }
+
+ return 0;
+}
+
+int av_bsf_send_packet(AVBSFContext *ctx, AVPacket *pkt)
+{
+ if (!pkt || (!pkt->data && !pkt->side_data_elems)) {
+ ctx->internal->eof = 1;
+ return 0;
+ }
+
+ if (ctx->internal->eof) {
+ av_log(ctx, AV_LOG_ERROR, "A non-NULL packet sent after an EOF.\n");
+ return AVERROR(EINVAL);
+ }
+
+ if (ctx->internal->buffer_pkt->data ||
+ ctx->internal->buffer_pkt->side_data_elems)
+ return AVERROR(EAGAIN);
+
+ av_packet_move_ref(ctx->internal->buffer_pkt, pkt);
+
+ return 0;
+}
+
+int av_bsf_receive_packet(AVBSFContext *ctx, AVPacket *pkt)
+{
+ return ctx->filter->filter(ctx, pkt);
+}
+
+int ff_bsf_get_packet(AVBSFContext *ctx, AVPacket **pkt)
+{
+ AVBSFInternal *in = ctx->internal;
+ AVPacket *tmp_pkt;
+
+ if (in->eof)
+ return AVERROR_EOF;
+
+ if (!ctx->internal->buffer_pkt->data &&
+ !ctx->internal->buffer_pkt->side_data_elems)
+ return AVERROR(EAGAIN);
+
+ tmp_pkt = av_packet_alloc();
+ if (!tmp_pkt)
+ return AVERROR(ENOMEM);
+
+ *pkt = ctx->internal->buffer_pkt;
+ ctx->internal->buffer_pkt = tmp_pkt;
+
+ return 0;
+}
+
+int ff_bsf_get_packet_ref(AVBSFContext *ctx, AVPacket *pkt)
+{
+ AVBSFInternal *in = ctx->internal;
+
+ if (in->eof)
+ return AVERROR_EOF;
+
+ if (!ctx->internal->buffer_pkt->data &&
+ !ctx->internal->buffer_pkt->side_data_elems)
+ return AVERROR(EAGAIN);
+
+ av_packet_move_ref(pkt, ctx->internal->buffer_pkt);
+
+ return 0;
+}
+
+typedef struct BSFListContext {
+ const AVClass *class;
+
+ AVBSFContext **bsfs;
+ int nb_bsfs;
+
+ unsigned idx; // index of currently processed BSF
+ unsigned flushed_idx; // index of BSF being flushed
+
+ char * item_name;
+} BSFListContext;
+
+
+static int bsf_list_init(AVBSFContext *bsf)
+{
+ BSFListContext *lst = bsf->priv_data;
+ int ret, i;
+ const AVCodecParameters *cod_par = bsf->par_in;
+ AVRational tb = bsf->time_base_in;
+
+ for (i = 0; i < lst->nb_bsfs; ++i) {
+ ret = avcodec_parameters_copy(lst->bsfs[i]->par_in, cod_par);
+ if (ret < 0)
+ goto fail;
+
+ lst->bsfs[i]->time_base_in = tb;
+
+ ret = av_bsf_init(lst->bsfs[i]);
+ if (ret < 0)
+ goto fail;
+
+ cod_par = lst->bsfs[i]->par_out;
+ tb = lst->bsfs[i]->time_base_out;
+ }
+
+ bsf->time_base_out = tb;
+ ret = avcodec_parameters_copy(bsf->par_out, cod_par);
+
+fail:
+ return ret;
+}
+
+static int bsf_list_filter(AVBSFContext *bsf, AVPacket *out)
+{
+ BSFListContext *lst = bsf->priv_data;
+ int ret;
+
+ if (!lst->nb_bsfs)
+ return ff_bsf_get_packet_ref(bsf, out);
+
+ while (1) {
+ if (lst->idx > lst->flushed_idx) {
+ ret = av_bsf_receive_packet(lst->bsfs[lst->idx-1], out);
+ if (ret == AVERROR(EAGAIN)) {
+ /* no more packets from idx-1, try with previous */
+ ret = 0;
+ lst->idx--;
+ continue;
+ } else if (ret == AVERROR_EOF) {
+ /* filter idx-1 is done, continue with idx...nb_bsfs */
+ lst->flushed_idx = lst->idx;
+ continue;
+ }else if (ret < 0) {
+ /* filtering error */
+ break;
+ }
+ } else {
+ ret = ff_bsf_get_packet_ref(bsf, out);
+ if (ret == AVERROR_EOF) {
+ lst->idx = lst->flushed_idx;
+ } else if (ret < 0)
+ break;
+ }
+
+ if (lst->idx < lst->nb_bsfs) {
+ AVPacket *pkt;
+ if (ret == AVERROR_EOF && lst->idx == lst->flushed_idx) {
+ /* ff_bsf_get_packet_ref returned EOF and idx is first
+ * filter of yet not flushed filter chain */
+ pkt = NULL;
+ } else {
+ pkt = out;
+ }
+ ret = av_bsf_send_packet(lst->bsfs[lst->idx], pkt);
+ if (ret < 0)
+ break;
+ lst->idx++;
+ } else {
+ /* The end of filter chain, break to return result */
+ break;
+ }
+ }
+
+ if (ret < 0)
+ av_packet_unref(out);
+
+ return ret;
+}
+
+static void bsf_list_close(AVBSFContext *bsf)
+{
+ BSFListContext *lst = bsf->priv_data;
+ int i;
+
+ for (i = 0; i < lst->nb_bsfs; ++i)
+ av_bsf_free(&lst->bsfs[i]);
+ av_freep(&lst->bsfs);
+ av_freep(&lst->item_name);
+}
+
+static const char *bsf_list_item_name(void *ctx)
+{
+ static const char *null_filter_name = "null";
+ AVBSFContext *bsf_ctx = ctx;
+ BSFListContext *lst = bsf_ctx->priv_data;
+
+ if (!lst->nb_bsfs)
+ return null_filter_name;
+
+ if (!lst->item_name) {
+ int i;
+ AVBPrint bp;
+ av_bprint_init(&bp, 16, 128);
+
+ av_bprintf(&bp, "bsf_list(");
+ for (i = 0; i < lst->nb_bsfs; i++)
+ av_bprintf(&bp, i ? ",%s" : "%s", lst->bsfs[i]->filter->name);
+ av_bprintf(&bp, ")");
+
+ av_bprint_finalize(&bp, &lst->item_name);
+ }
+
+ return lst->item_name;
+}
+
+static const AVClass bsf_list_class = {
+ .class_name = "bsf_list",
+ .item_name = bsf_list_item_name,
+ .version = LIBAVUTIL_VERSION_INT,
+};
+
+const AVBitStreamFilter ff_list_bsf = {
+ .name = "bsf_list",
+ .priv_data_size = sizeof(BSFListContext),
+ .priv_class = &bsf_list_class,
+ .init = bsf_list_init,
+ .filter = bsf_list_filter,
+ .close = bsf_list_close,
+};
+
+struct AVBSFList {
+ AVBSFContext **bsfs;
+ int nb_bsfs;
+};
+
+AVBSFList *av_bsf_list_alloc(void)
+{
+ return av_mallocz(sizeof(AVBSFList));
+}
+
+void av_bsf_list_free(AVBSFList **lst)
+{
+ int i;
+
+ if (!*lst)
+ return;
+
+ for (i = 0; i < (*lst)->nb_bsfs; ++i)
+ av_bsf_free(&(*lst)->bsfs[i]);
+ av_free((*lst)->bsfs);
+ av_freep(lst);
+}
+
+int av_bsf_list_append(AVBSFList *lst, AVBSFContext *bsf)
+{
+ return av_dynarray_add_nofree(&lst->bsfs, &lst->nb_bsfs, bsf);
+}
+
+int av_bsf_list_append2(AVBSFList *lst, const char *bsf_name, AVDictionary ** options)
+{
+ int ret;
+ const AVBitStreamFilter *filter;
+ AVBSFContext *bsf;
+
+ filter = av_bsf_get_by_name(bsf_name);
+ if (!filter)
+ return AVERROR_BSF_NOT_FOUND;
+
+ ret = av_bsf_alloc(filter, &bsf);
+ if (ret < 0)
+ return ret;
+
+ if (options) {
+ ret = av_opt_set_dict2(bsf, options, AV_OPT_SEARCH_CHILDREN);
+ if (ret < 0)
+ goto end;
+ }
+
+ ret = av_bsf_list_append(lst, bsf);
+
+end:
+ if (ret < 0)
+ av_bsf_free(&bsf);
+
+ return ret;
+}
+
+int av_bsf_list_finalize(AVBSFList **lst, AVBSFContext **bsf)
+{
+ int ret = 0;
+ BSFListContext *ctx;
+
+ if ((*lst)->nb_bsfs == 1) {
+ *bsf = (*lst)->bsfs[0];
+ av_freep(&(*lst)->bsfs);
+ (*lst)->nb_bsfs = 0;
+ goto end;
+ }
+
+ ret = av_bsf_alloc(&ff_list_bsf, bsf);
+ if (ret < 0)
+ return ret;
+
+ ctx = (*bsf)->priv_data;
+
+ ctx->bsfs = (*lst)->bsfs;
+ ctx->nb_bsfs = (*lst)->nb_bsfs;
+
+end:
+ av_freep(lst);
+ return ret;
+}
+
+static int bsf_parse_single(const char *str, AVBSFList *bsf_lst)
+{
+ char *bsf_name, *bsf_options_str, *buf;
+ AVDictionary *bsf_options = NULL;
+ int ret = 0;
+
+ if (!(buf = av_strdup(str)))
+ return AVERROR(ENOMEM);
+
+ bsf_name = av_strtok(buf, "=", &bsf_options_str);
+ if (!bsf_name) {
+ ret = AVERROR(EINVAL);
+ goto end;
+ }
+
+ if (bsf_options_str) {
+ ret = av_dict_parse_string(&bsf_options, bsf_options_str, "=", ":", 0);
+ if (ret < 0)
+ goto end;
+ }
+
+ ret = av_bsf_list_append2(bsf_lst, bsf_name, &bsf_options);
+
+ av_dict_free(&bsf_options);
+end:
+ av_free(buf);
+ return ret;
+}
+
+int av_bsf_list_parse_str(const char *str, AVBSFContext **bsf_lst)
+{
+ AVBSFList *lst;
+ char *bsf_str, *buf, *dup, *saveptr;
+ int ret;
+
+ if (!str)
+ return av_bsf_get_null_filter(bsf_lst);
+
+ lst = av_bsf_list_alloc();
+ if (!lst)
+ return AVERROR(ENOMEM);
+
+ if (!(dup = buf = av_strdup(str))) {
+ ret = AVERROR(ENOMEM);
+ goto end;
+ }
+
+ while (1) {
+ bsf_str = av_strtok(buf, ",", &saveptr);
+ if (!bsf_str)
+ break;
+
+ ret = bsf_parse_single(bsf_str, lst);
+ if (ret < 0)
+ goto end;
+
+ buf = NULL;
+ }
+
+ ret = av_bsf_list_finalize(&lst, bsf_lst);
+end:
+ if (ret < 0)
+ av_bsf_list_free(&lst);
+ av_free(dup);
+ return ret;
+}
+
+int av_bsf_get_null_filter(AVBSFContext **bsf)
+{
+ return av_bsf_alloc(&ff_list_bsf, bsf);
+}