summaryrefslogtreecommitdiff
path: root/libavfilter/graphparser.c
diff options
context:
space:
mode:
Diffstat (limited to 'libavfilter/graphparser.c')
-rw-r--r--libavfilter/graphparser.c125
1 files changed, 107 insertions, 18 deletions
diff --git a/libavfilter/graphparser.c b/libavfilter/graphparser.c
index 04339c8138..0ce823a10d 100644
--- a/libavfilter/graphparser.c
+++ b/libavfilter/graphparser.c
@@ -3,20 +3,20 @@
* Copyright (c) 2008 Vitor Sessak
* Copyright (c) 2007 Bobby Bingham
*
- * This file is part of Libav.
+ * This file is part of FFmpeg.
*
- * Libav is free software; you can redistribute it and/or
+ * 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.
*
- * Libav is distributed in the hope that it will be useful,
+ * 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 Libav; if not, write to the Free Software
+ * License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
@@ -101,7 +101,7 @@ static int create_filter(AVFilterContext **filt_ctx, AVFilterGraph *ctx, int ind
char tmp_args[256];
int ret;
- snprintf(inst_name, sizeof(inst_name), "Parsed filter %d %s", index, filt_name);
+ snprintf(inst_name, sizeof(inst_name), "Parsed_%s_%d", filt_name, index);
filt = avfilter_get_by_name(filt_name);
@@ -123,7 +123,8 @@ static int create_filter(AVFilterContext **filt_ctx, AVFilterGraph *ctx, int ind
return ret;
}
- if (!strcmp(filt_name, "scale") && args && !strstr(args, "flags")) {
+ if (!strcmp(filt_name, "scale") && args && !strstr(args, "flags")
+ && ctx->scale_sws_opts) {
snprintf(tmp_args, sizeof(tmp_args), "%s:%s",
args, ctx->scale_sws_opts);
args = tmp_args;
@@ -385,7 +386,7 @@ int avfilter_graph_parse2(AVFilterGraph *graph, const char *filters,
AVFilterInOut **inputs,
AVFilterInOut **outputs)
{
- int index = 0, ret;
+ int index = 0, ret = 0;
char chr = 0;
AVFilterInOut *curr_inputs = NULL, *open_inputs = NULL, *open_outputs = NULL;
@@ -400,18 +401,17 @@ int avfilter_graph_parse2(AVFilterGraph *graph, const char *filters,
filters += strspn(filters, WHITESPACES);
if ((ret = parse_inputs(&filters, &curr_inputs, &open_outputs, graph)) < 0)
- goto fail;
-
+ goto end;
if ((ret = parse_filter(&filter, &filters, graph, index, graph)) < 0)
- goto fail;
+ goto end;
if ((ret = link_filter_inouts(filter, &curr_inputs, &open_inputs, graph)) < 0)
- goto fail;
+ goto end;
if ((ret = parse_outputs(&filters, &curr_inputs, &open_inputs, &open_outputs,
graph)) < 0)
- goto fail;
+ goto end;
filters += strspn(filters, WHITESPACES);
chr = *filters++;
@@ -426,16 +426,17 @@ int avfilter_graph_parse2(AVFilterGraph *graph, const char *filters,
"Unable to parse graph description substring: \"%s\"\n",
filters - 1);
ret = AVERROR(EINVAL);
- goto fail;
+ goto end;
}
append_inout(&open_outputs, &curr_inputs);
+
*inputs = open_inputs;
*outputs = open_outputs;
return 0;
- fail:
+ fail:end:
for (; graph->filter_count > 0; graph->filter_count--)
avfilter_free(graph->filters[graph->filter_count - 1]);
av_freep(&graph->filters);
@@ -450,10 +451,13 @@ int avfilter_graph_parse2(AVFilterGraph *graph, const char *filters,
}
int avfilter_graph_parse(AVFilterGraph *graph, const char *filters,
- AVFilterInOut *open_inputs,
- AVFilterInOut *open_outputs, void *log_ctx)
+ AVFilterInOut **open_inputs_ptr, AVFilterInOut **open_outputs_ptr,
+ void *log_ctx)
{
+#if 0
int ret;
+ AVFilterInOut *open_inputs = open_inputs_ptr ? *open_inputs_ptr : NULL;
+ AVFilterInOut *open_outputs = open_outputs_ptr ? *open_outputs_ptr : NULL;
AVFilterInOut *cur, *match, *inputs = NULL, *outputs = NULL;
if ((ret = avfilter_graph_parse2(graph, filters, &inputs, &outputs)) < 0)
@@ -507,7 +511,92 @@ int avfilter_graph_parse(AVFilterGraph *graph, const char *filters,
}
avfilter_inout_free(&inputs);
avfilter_inout_free(&outputs);
- avfilter_inout_free(&open_inputs);
- avfilter_inout_free(&open_outputs);
+ /* clear open_in/outputs only if not passed as parameters */
+ if (open_inputs_ptr) *open_inputs_ptr = open_inputs;
+ else avfilter_inout_free(&open_inputs);
+ if (open_outputs_ptr) *open_outputs_ptr = open_outputs;
+ else avfilter_inout_free(&open_outputs);
return ret;
}
+#else
+ int index = 0, ret = 0;
+ char chr = 0;
+
+ AVFilterInOut *curr_inputs = NULL;
+ AVFilterInOut *open_inputs = open_inputs_ptr ? *open_inputs_ptr : NULL;
+ AVFilterInOut *open_outputs = open_outputs_ptr ? *open_outputs_ptr : NULL;
+
+ if ((ret = parse_sws_flags(&filters, graph)) < 0)
+ goto end;
+
+ do {
+ AVFilterContext *filter;
+ const char *filterchain = filters;
+ filters += strspn(filters, WHITESPACES);
+
+ if ((ret = parse_inputs(&filters, &curr_inputs, &open_outputs, log_ctx)) < 0)
+ goto end;
+
+ if ((ret = parse_filter(&filter, &filters, graph, index, log_ctx)) < 0)
+ goto end;
+
+ if (filter->input_count == 1 && !curr_inputs && !index) {
+ /* First input pad, assume it is "[in]" if not specified */
+ const char *tmp = "[in]";
+ if ((ret = parse_inputs(&tmp, &curr_inputs, &open_outputs, log_ctx)) < 0)
+ goto end;
+ }
+
+ if ((ret = link_filter_inouts(filter, &curr_inputs, &open_inputs, log_ctx)) < 0)
+ goto end;
+
+ if ((ret = parse_outputs(&filters, &curr_inputs, &open_inputs, &open_outputs,
+ log_ctx)) < 0)
+ goto end;
+
+ filters += strspn(filters, WHITESPACES);
+ chr = *filters++;
+
+ if (chr == ';' && curr_inputs) {
+ av_log(log_ctx, AV_LOG_ERROR,
+ "Invalid filterchain containing an unlabelled output pad: \"%s\"\n",
+ filterchain);
+ ret = AVERROR(EINVAL);
+ goto end;
+ }
+ index++;
+ } while (chr == ',' || chr == ';');
+
+ if (chr) {
+ av_log(log_ctx, AV_LOG_ERROR,
+ "Unable to parse graph description substring: \"%s\"\n",
+ filters - 1);
+ ret = AVERROR(EINVAL);
+ goto end;
+ }
+
+ if (curr_inputs) {
+ /* Last output pad, assume it is "[out]" if not specified */
+ const char *tmp = "[out]";
+ if ((ret = parse_outputs(&tmp, &curr_inputs, &open_inputs, &open_outputs,
+ log_ctx)) < 0)
+ goto end;
+ }
+
+end:
+ /* clear open_in/outputs only if not passed as parameters */
+ if (open_inputs_ptr) *open_inputs_ptr = open_inputs;
+ else avfilter_inout_free(&open_inputs);
+ if (open_outputs_ptr) *open_outputs_ptr = open_outputs;
+ else avfilter_inout_free(&open_outputs);
+ avfilter_inout_free(&curr_inputs);
+
+ if (ret < 0) {
+ for (; graph->filter_count > 0; graph->filter_count--)
+ avfilter_free(graph->filters[graph->filter_count - 1]);
+ av_freep(&graph->filters);
+ }
+ return ret;
+}
+
+#endif
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-09 10:33:07 +0000