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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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invtelecine: Add verify-field-flags property
When enabled, check that the video matches the field flags on the incoming buffers.
This commit is contained in:
David Schleef
parent
88f4a6a0ed
commit
6ceb310dc6
1 changed files with 185 additions and 21 deletions
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@ -25,6 +25,7 @@
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#include <gst/video/video.h>
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#include <stdlib.h>
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#include <string.h>
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#include <math.h>
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GST_DEBUG_CATEGORY (gst_invtelecine_debug);
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#define GST_CAT_DEFAULT gst_invtelecine_debug
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@ -51,7 +52,10 @@ struct _Field
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GstBuffer *buffer;
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int field_index;
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double prev;
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double prev1;
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double prev2;
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double prev3;
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};
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struct _GstInvtelecine
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@ -61,6 +65,10 @@ struct _GstInvtelecine
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GstPad *srcpad;
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GstPad *sinkpad;
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/* properties */
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gboolean verify_field_flags;
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/* state */
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int next_field;
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int num_fields;
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int field;
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@ -75,6 +83,8 @@ struct _GstInvtelecine
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int height;
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GstVideoFormat format;
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gboolean interlaced;
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double bad_flag_metric;
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};
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struct _GstInvtelecineClass
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@ -85,7 +95,8 @@ struct _GstInvtelecineClass
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enum
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{
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ARG_0
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ARG_0,
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PROP_VERIFY_FIELD_FLAGS
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};
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static GstStaticPadTemplate gst_invtelecine_src_template =
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@ -178,6 +189,13 @@ gst_invtelecine_class_init (GstInvtelecineClass * klass)
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object_class->get_property = gst_invtelecine_get_property;
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element_class->change_state = gst_invtelecine_change_state;
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g_object_class_install_property (object_class, PROP_VERIFY_FIELD_FLAGS,
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g_param_spec_boolean ("verify-field-flags", "verify field flags",
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"Verify that field dominance (top/bottom field first) buffer "
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"flags are correct", FALSE,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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}
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static void
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@ -194,6 +212,8 @@ gst_invtelecine_init (GstInvtelecine * invtelecine)
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gst_pad_new_from_static_template (&gst_invtelecine_src_template, "src");
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gst_element_add_pad (GST_ELEMENT (invtelecine), invtelecine->srcpad);
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invtelecine->bad_flag_metric = 1.0;
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invtelecine->verify_field_flags = FALSE;
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}
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static gboolean
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@ -326,14 +346,15 @@ gst_invtelecine_compare_fields (GstInvtelecine * invtelecine, int field1,
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}
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static double
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gst_invtelecine_compare_same_fields (GstInvtelecine * invtelecine, int field1,
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gst_invtelecine_compare_fields_mse (GstInvtelecine * invtelecine, int field1,
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int field2)
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{
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int i;
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int j;
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guint8 *data1;
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guint8 *data2;
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int field_index;
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int field_index1;
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int field_index2;
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int diff;
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double sum;
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double linesum;
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@ -350,22 +371,135 @@ gst_invtelecine_compare_same_fields (GstInvtelecine * invtelecine, int field1,
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}
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sum = 0;
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field_index = invtelecine->fifo[field1].field_index;
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for (j = field_index; j < 480; j += 2) {
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data1 = GST_BUFFER_DATA (invtelecine->fifo[field1].buffer) + 720 * j;
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data2 = GST_BUFFER_DATA (invtelecine->fifo[field2].buffer) + 720 * j;
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field_index1 = invtelecine->fifo[field1].field_index;
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field_index2 = invtelecine->fifo[field2].field_index;
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if (invtelecine->format == GST_VIDEO_FORMAT_I420 ||
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invtelecine->format == GST_VIDEO_FORMAT_YV12) {
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for (j = 0; j < invtelecine->height; j += 2) {
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data1 = GST_BUFFER_DATA (invtelecine->fifo[field1].buffer) +
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invtelecine->width * (j + field_index1);
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data2 = GST_BUFFER_DATA (invtelecine->fifo[field2].buffer) +
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invtelecine->width * (j + field_index2);
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linesum = 0;
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for (i = 0; i < 720; i++) {
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for (i = 0; i < invtelecine->width; i++) {
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diff = (data1[i] - data2[i]);
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linesum += diff * diff;
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}
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sum += linesum;
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}
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} else {
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for (j = 0; j < invtelecine->height; j += 2) {
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data1 = GST_BUFFER_DATA (invtelecine->fifo[field1].buffer) +
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invtelecine->width * 2 * (j + field_index1);
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data2 = GST_BUFFER_DATA (invtelecine->fifo[field2].buffer) +
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invtelecine->width * 2 * (j + field_index2);
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sum /= 720 * 240;
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if (invtelecine->format == GST_VIDEO_FORMAT_UYVY) {
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data1++;
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data2++;
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}
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return MIN (sum, MAX_FIELD_SCORE);
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linesum = 0;
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for (i = 0; i < invtelecine->width; i++) {
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diff = (data1[i * 2] - data2[i * 2]);
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linesum += diff * diff;
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}
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sum += linesum;
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}
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}
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sum /= invtelecine->width * invtelecine->height / 2;
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//return MIN (sum, MAX_FIELD_SCORE);
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return sum;
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}
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static double
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gst_invtelecine_compare_fields_mse_ave (GstInvtelecine * invtelecine,
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int field1, int field2)
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{
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int i;
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int j;
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guint8 *data1;
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guint8 *data2_1;
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guint8 *data2_2;
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int field_index1;
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int field_index2;
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double diff;
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double sum;
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double linesum;
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#define MAX_FIELD_SCORE_2 1e9
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if (field1 < 0 || field2 < 0)
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return MAX_FIELD_SCORE_2;
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if (invtelecine->fifo[field1].buffer == NULL ||
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invtelecine->fifo[field2].buffer == NULL)
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return MAX_FIELD_SCORE_2;
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if (invtelecine->fifo[field1].buffer == invtelecine->fifo[field2].buffer &&
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invtelecine->fifo[field1].field_index ==
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invtelecine->fifo[field2].field_index) {
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return 0;
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}
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sum = 0;
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field_index1 = invtelecine->fifo[field1].field_index;
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field_index2 = invtelecine->fifo[field2].field_index;
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if (invtelecine->format == GST_VIDEO_FORMAT_I420 ||
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invtelecine->format == GST_VIDEO_FORMAT_YV12) {
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for (j = 0; j < invtelecine->height; j += 2) {
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if (j + field_index1 == 0 || j + field_index1 == invtelecine->height - 1)
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continue;
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data1 = GST_BUFFER_DATA (invtelecine->fifo[field1].buffer) +
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invtelecine->width * (j + field_index1);
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data2_1 = GST_BUFFER_DATA (invtelecine->fifo[field2].buffer) +
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invtelecine->width * (j + field_index1 - 1);
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data2_2 = GST_BUFFER_DATA (invtelecine->fifo[field2].buffer) +
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invtelecine->width * (j + field_index1 + 1);
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linesum = 0;
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for (i = 0; i < invtelecine->width; i++) {
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diff = (data1[i] - (data2_1[i] + data2_2[i]) / 2);
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diff *= diff;
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linesum += diff * diff;
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}
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sum += linesum;
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}
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} else {
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for (j = 0; j < invtelecine->height; j += 2) {
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if (j + field_index1 == 0 || j + field_index1 == invtelecine->height - 1)
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continue;
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data1 = GST_BUFFER_DATA (invtelecine->fifo[field1].buffer) +
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invtelecine->width * 2 * (j + field_index1);
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data2_1 = GST_BUFFER_DATA (invtelecine->fifo[field2].buffer) +
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invtelecine->width * 2 * (j + field_index1 - 1);
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data2_2 = GST_BUFFER_DATA (invtelecine->fifo[field2].buffer) +
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invtelecine->width * 2 * (j + field_index1 + 1);
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if (invtelecine->format == GST_VIDEO_FORMAT_UYVY) {
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data1++;
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data2_1++;
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data2_2++;
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}
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linesum = 0;
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for (i = 0; i < invtelecine->width; i++) {
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diff = (data1[i] - (data2_1[i] + data2_2[i]) / 2);
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diff *= diff;
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linesum += diff * diff;
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}
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sum += linesum;
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}
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}
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sum /= invtelecine->width * (invtelecine->height / 2 - 1);
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g_assert (sum > 0);
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//return MIN (sum, MAX_FIELD_SCORE);
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return sqrt (sum);
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}
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static void
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@ -384,12 +518,31 @@ gst_invtelecine_push_field (GstInvtelecine * invtelecine, GstBuffer * buffer,
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invtelecine->fifo[i].prev =
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gst_invtelecine_compare_fields (invtelecine, i, i - 1);
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invtelecine->fifo[i].prev2 =
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gst_invtelecine_compare_same_fields (invtelecine, i, i - 2);
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gst_invtelecine_compare_fields_mse (invtelecine, i, i - 2);
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if (invtelecine->verify_field_flags) {
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invtelecine->fifo[i].prev3 =
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gst_invtelecine_compare_fields_mse_ave (invtelecine, i, i - 3);
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invtelecine->fifo[i].prev1 =
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gst_invtelecine_compare_fields_mse_ave (invtelecine, i, i - 1);
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#define ALPHA 0.2
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if (invtelecine->fifo[i].prev3 != 0) {
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invtelecine->bad_flag_metric *= (1 - ALPHA);
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invtelecine->bad_flag_metric +=
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ALPHA * (invtelecine->fifo[i].prev1 / invtelecine->fifo[i].prev3);
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}
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#if 0
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g_print ("compare %g %g\n", invtelecine->fifo[i].prev,
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invtelecine->fifo[i].prev2);
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g_print ("42 %g %g %g\n", invtelecine->bad_flag_metric,
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invtelecine->fifo[i].prev1, invtelecine->fifo[i].prev3);
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#endif
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if (invtelecine->bad_flag_metric > 1.2) {
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GST_WARNING ("bad field flags? metric %g > 1.2",
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invtelecine->bad_flag_metric);
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}
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}
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}
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int pulldown_2_3[] = { 2, 3 };
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@ -696,6 +849,10 @@ gst_invtelecine_chain (GstPad * pad, GstBuffer * buffer)
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(guint) (GST_BUFFER_TIMESTAMP (buffer) % GST_SECOND));
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field_index = (GST_BUFFER_FLAGS (buffer) & GST_VIDEO_BUFFER_TFF) ? 0 : 1;
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//#define BAD
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#ifdef BAD
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field_index ^= 1;
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#endif
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GST_DEBUG ("duration %" GST_TIME_FORMAT " flags %04x %s %s %s",
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GST_TIME_ARGS (GST_BUFFER_DURATION (buffer)),
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@ -706,13 +863,14 @@ gst_invtelecine_chain (GstPad * pad, GstBuffer * buffer)
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"");
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if (GST_BUFFER_FLAGS (buffer) & GST_BUFFER_FLAG_DISCONT) {
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GST_DEBUG ("discont");
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GST_ERROR ("discont");
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invtelecine->next_field = field_index;
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invtelecine->bad_flag_metric = 1.0;
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}
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if (invtelecine->next_field != field_index) {
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GST_DEBUG ("wrong field first, expecting %d got %d",
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GST_WARNING ("wrong field first, expecting %d got %d",
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invtelecine->next_field, field_index);
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invtelecine->next_field = field_index;
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}
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@ -743,9 +901,12 @@ static void
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gst_invtelecine_set_property (GObject * object,
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guint prop_id, const GValue * value, GParamSpec * pspec)
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{
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//GstInvtelecine *invtelecine = GST_INVTELECINE (object);
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GstInvtelecine *invtelecine = GST_INVTELECINE (object);
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switch (prop_id) {
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case PROP_VERIFY_FIELD_FLAGS:
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invtelecine->verify_field_flags = g_value_get_boolean (value);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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@ -756,9 +917,12 @@ static void
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gst_invtelecine_get_property (GObject * object,
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guint prop_id, GValue * value, GParamSpec * pspec)
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{
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//GstInvtelecine *invtelecine = GST_INVTELECINE (object);
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GstInvtelecine *invtelecine = GST_INVTELECINE (object);
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switch (prop_id) {
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case PROP_VERIFY_FIELD_FLAGS:
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g_value_set_boolean (value, invtelecine->verify_field_flags);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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