Merge commit 'a83c0da5'

* commit 'a83c0da5':
  avconv: make -t insert trim/atrim filters.

The filter insertion code is merged but disabled as it is buggy.
For example it fails in various ways when used with -s with some files.
Also the trimming is arguably less accurate than the default without
filters in some cases.
These issues should be fixed before auto inserting the filters,
until then the user can explicitly add a trim/atrim filter when one is
wanted.

Conflicts:
	Changelog
	ffmpeg.c
	ffmpeg_filter.c
	tests/ref/fate/bethsoft-vid
	tests/ref/lavf/aiff
	tests/ref/lavf/asf
	tests/ref/lavf/au
	tests/ref/lavf/avi
	tests/ref/lavf/dpx
	tests/ref/lavf/ffm
	tests/ref/lavf/gxf
	tests/ref/lavf/jpg
	tests/ref/lavf/mkv
	tests/ref/lavf/mmf
	tests/ref/lavf/mov
	tests/ref/lavf/mpg
	tests/ref/lavf/nut
	tests/ref/lavf/ogg
	tests/ref/lavf/pcx
	tests/ref/lavf/png
	tests/ref/lavf/rm
	tests/ref/lavf/ts
	tests/ref/lavf/voc
	tests/ref/lavf/voc_s16
	tests/ref/lavf/wav
Merged-by: Michael Niedermayer <michaelni@gmx.at>

Changelog

@@ -35,6 +35,7 @@ version <next>:
   the vid.stab library
 - astats filter
 - trim and atrim filters
+- ffmpeg -t option is now sample-accurate when transcoding audio
 
 
 version 1.2:

ffmpeg.c

@@ -846,7 +846,11 @@ static void do_video_out(AVFormatContext *s,
 
     in_picture->pts = ost->sync_opts;
 
+#if 1
     if (!check_recording_time(ost))
+#else
+    if (ost->frame_number >= ost->max_frames)
+#endif
         return;
 
     if (s->oformat->flags & AVFMT_RAWPICTURE &&

ffmpeg_filter.c

@@ -276,6 +276,54 @@ static void init_input_filter(FilterGraph *fg, AVFilterInOut *in)
     ist->filters[ist->nb_filters - 1] = fg->inputs[fg->nb_inputs - 1];
 }
 
+static int insert_trim(OutputStream *ost, AVFilterContext **last_filter, int *pad_idx)
+{
+    OutputFile *of = output_files[ost->file_index];
+    AVFilterGraph *graph = (*last_filter)->graph;
+    AVFilterContext *ctx;
+    const AVFilter *trim;
+    const char *name = ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO ? "trim" : "atrim";
+    char filter_name[128];
+    int ret = 0;
+
+    if (of->recording_time == INT64_MAX)
+        return 0;
+
+    return 0;
+
+    trim = avfilter_get_by_name(name);
+    if (!trim) {
+        av_log(NULL, AV_LOG_ERROR, "%s filter not present, cannot limit "
+               "recording time.\n", name);
+        return AVERROR_FILTER_NOT_FOUND;
+    }
+
+    snprintf(filter_name, sizeof(filter_name), "%s for output stream %d:%d",
+             name, ost->file_index, ost->index);
+    ctx = avfilter_graph_alloc_filter(graph, trim, filter_name);
+    if (!ctx)
+        return AVERROR(ENOMEM);
+
+    ret = av_opt_set_double(ctx, "duration", (double)of->recording_time / 1e6,
+                            AV_OPT_SEARCH_CHILDREN);
+    if (ret < 0) {
+        av_log(ctx, AV_LOG_ERROR, "Error configuring the %s filter", name);
+        return ret;
+    }
+
+    ret = avfilter_init_str(ctx, NULL);
+    if (ret < 0)
+        return ret;
+
+    ret = avfilter_link(*last_filter, *pad_idx, ctx, 0);
+    if (ret < 0)
+        return ret;
+
+    *last_filter = ctx;
+    *pad_idx     = 0;
+    return 0;
+}
+
 static int configure_output_video_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
 {
     char *pix_fmts;
@@ -352,6 +400,11 @@ static int configure_output_video_filter(FilterGraph *fg, OutputFilter *ofilter,
         pad_idx = 0;
     }
 
+    ret = insert_trim(ost, &last_filter, &pad_idx);
+    if (ret < 0)
+        return ret;
+
+
     if ((ret = avfilter_link(last_filter, pad_idx, ofilter->filter, 0)) < 0)
         return ret;
 
@@ -458,6 +511,10 @@ static int configure_output_audio_filter(FilterGraph *fg, OutputFilter *ofilter,
         AUTO_INSERT_FILTER("-vol", "volume", args);
     }
 
+    ret = insert_trim(ost, &last_filter, &pad_idx);
+    if (ret < 0)
+        return ret;
+
     if ((ret = avfilter_link(last_filter, pad_idx, ofilter->filter, 0)) < 0)
         return ret;