---
libavfilter/vf_extractqp.c | 116 ++++++++++++++++++++++++++++++++
libavutil/Makefile | 2 +
libavutil/quantization_params.c | 28 ++++++++
libavutil/quantization_params.h | 98 +++++++++++++++++++++++++++
4 files changed, 244 insertions(+)
create mode 100644 libavfilter/vf_extractqp.c
create mode 100644 libavutil/quantization_params.c
create mode 100644 libavutil/quantization_params.h
diff --git a/libavfilter/vf_extractqp.c b/libavfilter/vf_extractqp.c
new file mode 100644
index 0000000000..4332012cc4
--- /dev/null
+++ b/libavfilter/vf_extractqp.c
@@ -0,0 +1,116 @@
+/*
+ * 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 "libavutil/frame.h"
+#include "libavutil/opt.h"
+#include "libavutil/quantization_params.h"
+#include "libavfilter/avfilter.h"
+#include "libavfilter/internal.h"
+
+typedef struct QPExtractContext {
+ const AVClass *class;
+ FILE *stats_file;
+ char *stats_file_str;
+} QPExtractContext;
+
+#define OFFSET(x) offsetof(QPExtractContext, x)
+#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
+
+static const AVOption qpextract_options[] = {
+ {"stats_file", "Set file to store QP information", OFFSET(stats_file_str),
AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
+ {"f", "Set file to store QP information", OFFSET(stats_file_str),
AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
+ { NULL }
+};
+
+AVFILTER_DEFINE_CLASS(qpextract);
+
+static av_cold int init(AVFilterContext *ctx)
+{
+ QPExtractContext *s = ctx->priv;
+
+ if (s->stats_file_str) {
+ if (!strcmp(s->stats_file_str, "-")) {
+ s->stats_file = stdout;
+ } else {
+ s->stats_file = fopen(s->stats_file_str, "w");
+ if (!s->stats_file) {
+ int err = AVERROR(errno);
+ char buf[128];
+ av_strerror(err, buf, sizeof(buf));
+ av_log(ctx, AV_LOG_ERROR, "Could not open log file %s: %s\n",
+ s->stats_file_str, buf);
+ return err;
+ }
+ }
+ }
+ return 0;
+}
+
+static av_cold int uninit(AVFilterContext *ctx) {
+ return 0;
+}
+
+static int filter_frame(AVFilterLink *inlink, AVFrame *in) {
+ AVFilterContext *ctx = inlink->dst;
+ AVFilterLink *outlink = ctx->outputs[0];
+ QPExtractContext *s = ctx->priv;
+ AVFrame *out = NULL;
+
+ if (ctx->is_disabled) {
+ return ff_filter_frame(outlink, in);
+ }
+
+ AVFrameSideData *sd = av_frame_get_side_data(in,
AV_FRAME_DATA_QUANTIZATION_PARAMS);
+
+ if (!sd) {
+ fprintf(s->stats_file, "no side data");
+ }
+ else {
+ fprintf(s->stats_file, "yes side data");
+ }
+
+ return ff_filter_frame(outlink, in);
+}
+
+static const AVFilterPad qpextract_inputs[] = {
+ {
+ .name = "default",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .filter_frame = filter_frame,
+ },
+ { NULL }
+};
+
+static const AVFilterPad qpextract_outputs[] = {
+ {
+ .name = "default",
+ .type = AVMEDIA_TYPE_VIDEO,
+ },
+ { NULL }
+};
+
+AVFilter ff_vf_qpextract = {
+ .name = "extractqp",
+ .description = NULL_IF_CONFIG_SMALL("Extract quantization parameters."),
+ .init = init,
+ .uninit = uninit,
+ .priv_size = sizeof(QPExtractContext),
+ .priv_class = &qpextract_class,
+ .inputs = qpextract_inputs,
+ .outputs = qpextract_outputs,
+};
diff --git a/libavutil/Makefile b/libavutil/Makefile
index 8a7a44e4b5..be1a9c3a9c 100644
--- a/libavutil/Makefile
+++ b/libavutil/Makefile
@@ -60,6 +60,7 @@ HEADERS = adler32.h
\
pixdesc.h \
pixelutils.h \
pixfmt.h \
+ quantization_params.h \
random_seed.h \
rc4.h \
rational.h \
@@ -140,6 +141,7 @@ OBJS = adler32.o
\
parseutils.o \
pixdesc.o \
pixelutils.o \
+ quantization_params.o \
random_seed.o \
rational.o \
reverse.o \
diff --git a/libavutil/quantization_params.c b/libavutil/quantization_params.c
new file mode 100644
index 0000000000..96ffd78dbb
--- /dev/null
+++ b/libavutil/quantization_params.c
@@ -0,0 +1,28 @@
+/*
+ * 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 "libavutil/quantization_params.h"
+
+/**
+ * Strings for names of enums, used by Filter
+ */
+const char* const QP_NAMES_H264[] = {"qp"};
+const char* const QP_NAMES_VP9[] = {"qydc", "qyac", "quvdc", "quvac", "qiydc",
"qiyac",
+ "qiuvdc", "qiuvac"};
+const char* const QP_NAMES_AV1[] = {"qydc", "qyac", "qudc", "quac", "qvdc",
"qvac",
+ "qiydc", "qiyac", "qiudc", "qiuac", "qivdc",
"qivac"};
\ No newline at end of file
diff --git a/libavutil/quantization_params.h b/libavutil/quantization_params.h
new file mode 100644
index 0000000000..e986abe842
--- /dev/null
+++ b/libavutil/quantization_params.h
@@ -0,0 +1,98 @@
+/*
+ * 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
+ */
+
+#ifndef AVUTIL_QUANTIZATION_PARAMS_H
+#define AVUTIL_QUANTIZATION_PARAMS_H
+
+/**
+ * Data structure for extracting Quantization Parameters codec independent
+ */
+typedef struct AVQuantizationParams {
+ /**
+ * x and y coordinates of the block in pixels
+ */
+ int x, y;
+ /**
+ * width and height of the block in pixels
+ */
+ int w, h;
+ /**
+ * qp array, indexed by type according to
+ * the enum corresponding to the codec
+ * size depends on codec
+ */
+ int *type;
+} AVQuantizationParams;
+
+/**
+ * For storing an array of AVQuantization parameters and its size
+ * To be used as AVFrameSideData
+ */
+typedef struct AVQuantizationParamsArray {
+ /**
+ * AVQuantizationParams block array
+ */
+ AVQuantizationParams *qp_arr;
+ /**
+ * size of the array
+ */
+ int nb_blocks;
+} AVQuantizationParamsArray;
+
+/**
+ * Enums for different codecs to store qp in the type array
+ * Each enum must have an array of strings describing each field
+ * used for output
+ */
+extern const char* const QP_ENUM_NAMES_H264[];
+enum QP_ARR_INDEXES_FOR_H264 {
+ QP_H264 = 0, // qp value
+ QP_TYPE_ARR_SIZE_H264 // used for allocating memory
+};
+
+extern const char* const QP_NAMES_VP9[];
+enum QP_ARR_INDEXES_FOR_VP9 {
+ QP_YDC_VP9 = 0,
+ QP_YAC_VP9,
+ QP_UVDC_VP9,
+ QP_UVAC_VP9,
+ QP_INDEX_YDC_VP9,
+ QP_INDEX_YAC_VP9,
+ QP_INDEX_UVDC_VP9,
+ QP_INDEX_UVAC_VP9,
+ QP_ARR_SIZE_VP9
+};
+
+extern const char* const QP_NAMES_AV1[];
+enum QP_ARR_INDEXES_FOR_AV1 {
+ QP_YDC_AV1 = 0,
+ QP_YAC_AV1,
+ QP_UDC_AV1,
+ QP_UAC_AV1,
+ QP_VDC_AV1,
+ QP_VAC_AV1,
+ QP_INDEX_YDC_AV1,
+ QP_INDEX_YAC_AV1,
+ QP_INDEX_UDC_AV1,
+ QP_INDEX_UAC_AV1,
+ QP_INDEX_VDC_AV1,
+ QP_INDEX_VAC_AV1,
+ QP_ARR_SIZE_AV1
+};
+
+#endif /* AVUTIL_QUANTIZATION_PARAMS_H */
--
2.22.0.510.g264f2c817a-goog
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