Merge commit 'b472938233b98178ed6c1353c37e0dc7ab585902'

* commit 'b472938233b98178ed6c1353c37e0dc7ab585902':
  lavfi: add an asetpts filter

Conflicts:
	Changelog
	doc/filters.texi
	libavfilter/Makefile
	libavfilter/allfilters.c
	libavfilter/f_setpts.c
	libavfilter/setpts.c
	libavfilter/version.h
	libavfilter/vf_setpts.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>

4 files changed, 129 insertions, 61 deletions

diff --git a/doc/filters.texi b/doc/filters.texi
index 89d3dd7acd..2813ff3d59 100644
--- a/doc/filters.texi
+++ b/doc/filters.texi
@@ -933,6 +933,75 @@ disable padding for the last frame, use:
 asetnsamples=n=1234:p=0
 @end example
 
+@section asetpts
+
+Change the PTS (presentation timestamp) of the input audio frames.
+
+This filter accepts the following options:
+
+@table @option
+
+@item expr
+The expression which is evaluated for each frame to construct its timestamp.
+
+@end table
+
+The expression is evaluated through the eval API and can contain the following
+constants:
+
+@table @option
+@item PTS
+the presentation timestamp in input
+
+@item PI
+Greek PI
+
+@item PHI
+golden ratio
+
+@item E
+Euler number
+
+@item N
+Number of the audio samples pass through the filter so far, starting at 0.
+
+@item S
+Number of the audio samples in the current frame.
+
+@item SR
+Audio sample rate.
+
+@item STARTPTS
+the PTS of the first frame
+
+@item PREV_INPTS
+previous input PTS
+
+@item PREV_OUTPTS
+previous output PTS
+
+@item RTCTIME
+wallclock (RTC) time in microseconds
+
+@item RTCSTART
+wallclock (RTC) time at the start of the movie in microseconds
+
+@end table
+
+Some examples follow:
+
+@example
+# start counting PTS from zero
+asetpts=expr=PTS-STARTPTS
+
+#generate timestamps by counting samples
+asetpts=expr=N/SR/TB
+
+# generate timestamps from a "live source" and rebase onto the current timebase
+asetpts='(RTCTIME - RTCSTART) / (TB * 1000000)"
+@end example
+
+
 @section asetrate
 
 Set the sample rate without altering the PCM data.
diff --git a/libavfilter/Makefile b/libavfilter/Makefile
index d4ecf95b6f..04edff9d81 100644
--- a/libavfilter/Makefile
+++ b/libavfilter/Makefile
@@ -64,7 +64,7 @@ OBJS-$(CONFIG_ARESAMPLE_FILTER)              += af_aresample.o
 OBJS-$(CONFIG_ASELECT_FILTER)                += f_select.o
 OBJS-$(CONFIG_ASENDCMD_FILTER)               += f_sendcmd.o
 OBJS-$(CONFIG_ASETNSAMPLES_FILTER)           += af_asetnsamples.o
-OBJS-$(CONFIG_ASETPTS_FILTER)                += f_setpts.o
+OBJS-$(CONFIG_ASETPTS_FILTER)                += setpts.o
 OBJS-$(CONFIG_ASETRATE_FILTER)               += af_asetrate.o
 OBJS-$(CONFIG_ASETTB_FILTER)                 += f_settb.o
 OBJS-$(CONFIG_ASHOWINFO_FILTER)              += af_ashowinfo.o
@@ -163,7 +163,7 @@ OBJS-$(CONFIG_SELECT_FILTER)                 += f_select.o
 OBJS-$(CONFIG_SENDCMD_FILTER)                += f_sendcmd.o
 OBJS-$(CONFIG_SETDAR_FILTER)                 += vf_aspect.o
 OBJS-$(CONFIG_SETFIELD_FILTER)               += vf_setfield.o
-OBJS-$(CONFIG_SETPTS_FILTER)                 += f_setpts.o
+OBJS-$(CONFIG_SETPTS_FILTER)                 += setpts.o
 OBJS-$(CONFIG_SETSAR_FILTER)                 += vf_aspect.o
 OBJS-$(CONFIG_SETTB_FILTER)                  += f_settb.o
 OBJS-$(CONFIG_SHOWINFO_FILTER)               += vf_showinfo.o
diff --git a/libavfilter/f_setpts.c b/libavfilter/setpts.c
index 648eec0802..97f2621bf3 100644
--- a/libavfilter/f_setpts.c
+++ b/libavfilter/setpts.c
@@ -29,15 +29,15 @@
 #include "libavutil/mathematics.h"
 #include "libavutil/opt.h"
 #include "libavutil/time.h"
+#include "audio.h"
 #include "avfilter.h"
 #include "internal.h"
-#include "audio.h"
 #include "video.h"
 
 static const char *const var_names[] = {
     "FRAME_RATE",  ///< defined only for constant frame-rate video
     "INTERLACED",  ///< tell if the current frame is interlaced
-    "N",           ///< frame number (starting at zero)
+    "N",           ///< frame / sample number (starting at zero)
     "NB_CONSUMED_SAMPLES", ///< number of samples consumed by the filter (only audio)
     "NB_SAMPLES",  ///< number of samples in the current frame (only audio)
     "POS",         ///< original position in the file of the frame
@@ -53,6 +53,8 @@ static const char *const var_names[] = {
     "TB",          ///< timebase
     "RTCTIME",     ///< wallclock (RTC) time in micro seconds
     "RTCSTART",    ///< wallclock (RTC) time at the start of the movie in micro seconds
+    "S",           //   Number of samples in the current frame
+    "SR",          //   Audio sample rate
     NULL
 };
 
@@ -75,6 +77,8 @@ enum var_name {
     VAR_TB,
     VAR_RTCTIME,
     VAR_RTCSTART,
+    VAR_S,
+    VAR_SR,
     VAR_VARS_NB
 };
 
@@ -98,6 +102,7 @@ static av_cold int init(AVFilterContext *ctx)
     }
 
     setpts->var_values[VAR_N]           = 0.0;
+    setpts->var_values[VAR_S]           = 0.0;
     setpts->var_values[VAR_PREV_INPTS]  = NAN;
     setpts->var_values[VAR_PREV_INT]    = NAN;
     setpts->var_values[VAR_PREV_OUTPTS] = NAN;
@@ -116,6 +121,7 @@ static int config_input(AVFilterLink *inlink)
     setpts->var_values[VAR_TB] = av_q2d(inlink->time_base);
     setpts->var_values[VAR_RTCSTART] = av_gettime();
 
+    setpts->var_values[VAR_SR] =
     setpts->var_values[VAR_SAMPLE_RATE] =
         setpts->type == AVMEDIA_TYPE_AUDIO ? inlink->sample_rate : NAN;
 
@@ -159,17 +165,15 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *frame)
     setpts->var_values[VAR_POS       ] = av_frame_get_pkt_pos(frame) == -1 ? NAN : av_frame_get_pkt_pos(frame);
     setpts->var_values[VAR_RTCTIME   ] = av_gettime();
 
-    switch (inlink->type) {
-    case AVMEDIA_TYPE_VIDEO:
+    if (inlink->type == AVMEDIA_TYPE_VIDEO) {
         setpts->var_values[VAR_INTERLACED] = frame->interlaced_frame;
-        break;
-
-    case AVMEDIA_TYPE_AUDIO:
+    } else if (inlink->type == AVMEDIA_TYPE_AUDIO) {
+        setpts->var_values[VAR_S] = frame->nb_samples;
         setpts->var_values[VAR_NB_SAMPLES] = frame->nb_samples;
-        break;
     }
 
     d = av_expr_eval(setpts->expr, setpts->var_values, NULL);
+    frame->pts = D2TS(d);
 
     av_log(inlink->dst, AV_LOG_DEBUG,
            "N:%"PRId64" PTS:%s T:%f POS:%s",
@@ -190,13 +194,16 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *frame)
     }
     av_log(inlink->dst, AV_LOG_DEBUG, " -> PTS:%s T:%f\n", d2istr(d), TS2T(d, inlink->time_base));
 
-    frame->pts = D2TS(d);
+    if (inlink->type == AVMEDIA_TYPE_VIDEO) {
+        setpts->var_values[VAR_N] += 1.0;
+    } else {
+        setpts->var_values[VAR_N] += frame->nb_samples;
+    }
 
     setpts->var_values[VAR_PREV_INPTS ] = TS2D(in_pts);
     setpts->var_values[VAR_PREV_INT   ] = TS2T(in_pts, inlink->time_base);
     setpts->var_values[VAR_PREV_OUTPTS] = TS2D(frame->pts);
     setpts->var_values[VAR_PREV_OUTT]   = TS2T(frame->pts, inlink->time_base);
-    setpts->var_values[VAR_N] += 1.0;
     if (setpts->type == AVMEDIA_TYPE_AUDIO) {
         setpts->var_values[VAR_NB_CONSUMED_SAMPLES] += frame->nb_samples;
     }
@@ -210,98 +217,90 @@ static av_cold void uninit(AVFilterContext *ctx)
     setpts->expr = NULL;
 }
 
-#if CONFIG_ASETPTS_FILTER
-
 #define OFFSET(x) offsetof(SetPTSContext, x)
-#define AFLAGS AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_FILTERING_PARAM
-static const AVOption aoptions[] = {
-    { "expr", "Expression determining the frame timestamp", OFFSET(expr_str), AV_OPT_TYPE_STRING, { .str = "PTS" }, .flags = AFLAGS },
+#define FLAGS AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_FILTERING_PARAM
+static const AVOption options[] = {
+    { "expr", "Expression determining the frame timestamp", OFFSET(expr_str), AV_OPT_TYPE_STRING, { .str = "PTS" }, .flags = FLAGS },
     { NULL },
 };
 
-static const AVClass asetpts_class = {
-    .class_name = "asetpts",
+#if CONFIG_SETPTS_FILTER
+static const AVClass setpts_class = {
+    .class_name = "setpts",
     .item_name  = av_default_item_name,
-    .option     = aoptions,
+    .option     = options,
     .version    = LIBAVUTIL_VERSION_INT,
 };
 
-static const AVFilterPad avfilter_af_asetpts_inputs[] = {
+static const AVFilterPad avfilter_vf_setpts_inputs[] = {
     {
         .name             = "default",
-        .type             = AVMEDIA_TYPE_AUDIO,
-        .get_audio_buffer = ff_null_get_audio_buffer,
+        .type             = AVMEDIA_TYPE_VIDEO,
+        .get_video_buffer = ff_null_get_video_buffer,
         .config_props     = config_input,
         .filter_frame     = filter_frame,
     },
     { NULL }
 };
 
-static const AVFilterPad avfilter_af_asetpts_outputs[] = {
+static const AVFilterPad avfilter_vf_setpts_outputs[] = {
     {
         .name = "default",
-        .type = AVMEDIA_TYPE_AUDIO,
+        .type = AVMEDIA_TYPE_VIDEO,
     },
     { NULL }
 };
 
-AVFilter avfilter_af_asetpts = {
-    .name      = "asetpts",
-    .description = NULL_IF_CONFIG_SMALL("Set PTS for the output audio frame."),
+AVFilter avfilter_vf_setpts = {
+    .name      = "setpts",
+    .description = NULL_IF_CONFIG_SMALL("Set PTS for the output video frame."),
     .init      = init,
     .uninit    = uninit,
-    .priv_size = sizeof(SetPTSContext),
-    .priv_class= &asetpts_class,
-    .inputs    = avfilter_af_asetpts_inputs,
-    .outputs   = avfilter_af_asetpts_outputs,
-};
-#endif /* CONFIG_ASETPTS_FILTER */
 
-#if CONFIG_SETPTS_FILTER
+    .priv_size = sizeof(SetPTSContext),
+    .priv_class = &setpts_class,
 
-#define OFFSET(x) offsetof(SetPTSContext, x)
-#define FLAGS AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM
-static const AVOption options[] = {
-    { "expr", "Expression determining the frame timestamp", OFFSET(expr_str), AV_OPT_TYPE_STRING, { .str = "PTS" }, .flags = FLAGS },
-    { NULL },
+    .inputs    = avfilter_vf_setpts_inputs,
+    .outputs   = avfilter_vf_setpts_outputs,
 };
+#endif /* CONFIG_SETPTS_FILTER */
 
-static const AVClass setpts_class = {
-    .class_name = "setpts",
+#if CONFIG_ASETPTS_FILTER
+
+static const AVClass asetpts_class = {
+    .class_name = "asetpts",
     .item_name  = av_default_item_name,
     .option     = options,
     .version    = LIBAVUTIL_VERSION_INT,
 };
 
-static const AVFilterPad avfilter_vf_setpts_inputs[] = {
+static const AVFilterPad asetpts_inputs[] = {
     {
         .name             = "default",
-        .type             = AVMEDIA_TYPE_VIDEO,
-        .get_video_buffer = ff_null_get_video_buffer,
+        .type             = AVMEDIA_TYPE_AUDIO,
+        .get_audio_buffer = ff_null_get_audio_buffer,
         .config_props     = config_input,
         .filter_frame     = filter_frame,
     },
     { NULL }
 };
 
-static const AVFilterPad avfilter_vf_setpts_outputs[] = {
+static const AVFilterPad asetpts_outputs[] = {
     {
         .name = "default",
-        .type = AVMEDIA_TYPE_VIDEO,
+        .type = AVMEDIA_TYPE_AUDIO,
     },
     { NULL }
 };
 
-AVFilter avfilter_vf_setpts = {
-    .name      = "setpts",
-    .description = NULL_IF_CONFIG_SMALL("Set PTS for the output video frame."),
-    .init      = init,
-    .uninit    = uninit,
-
-    .priv_size = sizeof(SetPTSContext),
-    .priv_class = &setpts_class,
-
-    .inputs    = avfilter_vf_setpts_inputs,
-    .outputs   = avfilter_vf_setpts_outputs,
+AVFilter avfilter_af_asetpts = {
+    .name        = "asetpts",
+    .description = NULL_IF_CONFIG_SMALL("Set PTS for the output audio frame."),
+    .init        = init,
+    .uninit      = uninit,
+    .priv_size   = sizeof(SetPTSContext),
+    .priv_class  = &asetpts_class,
+    .inputs      = asetpts_inputs,
+    .outputs     = asetpts_outputs,
 };
-#endif /* CONFIG_SETPTS_FILTER */
+#endif /* CONFIG_ASETPTS_FILTER */
diff --git a/libavfilter/version.h b/libavfilter/version.h
index e665ed0b09..21f8d5f73a 100644
--- a/libavfilter/version.h
+++ b/libavfilter/version.h
@@ -29,8 +29,8 @@
 #include "libavutil/avutil.h"
 
 #define LIBAVFILTER_VERSION_MAJOR  3
-#define LIBAVFILTER_VERSION_MINOR  61
-#define LIBAVFILTER_VERSION_MICRO 101
+#define LIBAVFILTER_VERSION_MINOR  62
+#define LIBAVFILTER_VERSION_MICRO 100
 
 #define LIBAVFILTER_VERSION_INT AV_VERSION_INT(LIBAVFILTER_VERSION_MAJOR, \
                                                LIBAVFILTER_VERSION_MINOR, \