---
libavcodec/avcodec.h | 1 +
libavcodec/h264dec.c | 37 ++++++++++++
libavcodec/options_table.h | 1 +
libavutil/Makefile | 2 +
libavutil/frame.h | 6 ++
libavutil/quantization_params.c | 40 +++++++++++++
libavutil/quantization_params.h | 102 ++++++++++++++++++++++++++++++++
7 files changed, 189 insertions(+)
create mode 100644 libavutil/quantization_params.c
create mode 100644 libavutil/quantization_params.h
diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h
index d234271c5b..9e3185720a 100644
--- a/libavcodec/avcodec.h
+++ b/libavcodec/avcodec.h
@@ -2671,6 +2671,7 @@ typedef struct AVCodecContext {
#endif
#define FF_DEBUG_BUFFERS 0x00008000
#define FF_DEBUG_THREADS 0x00010000
+#define FF_DEBUG_EXTRACTQP 0x00020000
#define FF_DEBUG_GREEN_MD 0x00800000
#define FF_DEBUG_NOMC 0x01000000
diff --git a/libavcodec/h264dec.c b/libavcodec/h264dec.c
index 8d1bd16a8e..07b85f4e0a 100644
--- a/libavcodec/h264dec.c
+++ b/libavcodec/h264dec.c
@@ -33,6 +33,7 @@
#include "libavutil/opt.h"
#include "libavutil/stereo3d.h"
#include "libavutil/timer.h"
+#include "libavutil/quantization_params.h"
#include "internal.h"
#include "bytestream.h"
#include "cabac.h"
@@ -922,6 +923,42 @@ static int finalize_frame(H264Context *h, AVFrame *dst,
H264Picture *out, int *g
}
}
+ if (h->avctx->debug & FF_DEBUG_EXTRACTQP) {
+ int mb_height = h->height / 16;
+ int mb_width = h->width / 16;
+ int mb_xy = mb_width * mb_height;
+
+ AVFrameSideData *sd;
+ sd = av_frame_new_side_data(dst, AV_FRAME_DATA_QUANTIZATION_PARAMS,
+ sizeof(AVQuantizationParamsArray));
+
+ AVQuantizationParamsArray *params;
+ params = (AVQuantizationParamsArray *)sd->data;
+ params->nb_blocks = mb_xy;
+ params->qp_arr = av_malloc_array(mb_xy, sizeof(AVQuantizationParams));
+
+ params->codec_id = h->avctx->codec_id;
+
+ // loop allocate QP
+ int qp_index = 0;
+ for (int mb_y = 0; mb_y < mb_height; mb_y++) {
+ for (int mb_x = 0; mb_x < mb_width; mb_x++) {
+ int qs_index = mb_x + mb_y * h->mb_stride;
+ AVQuantizationParams *qp_block = &(params->qp_arr[qp_index]);
+
+ qp_block->x = mb_x * 16;
+ qp_block->y = mb_y * 16;
+ qp_block->w = qp_block->h = 16;
+
+ // ALLOCATE MEMORY TO THE QP ARRAY
+ qp_block->type = av_malloc(QP_TYPE_ARR_SIZE_H264 *
sizeof(int));
+ qp_block->type[QP_H264] = out->qscale_table[qs_index];
+
+ qp_index++;
+ }
+ }
+ }
+
return 0;
}
diff --git a/libavcodec/options_table.h b/libavcodec/options_table.h
index 4a266eca16..e0e78a69c5 100644
--- a/libavcodec/options_table.h
+++ b/libavcodec/options_table.h
@@ -219,6 +219,7 @@ static const AVOption avcodec_options[] = {
{"buffers", "picture buffer allocations", 0, AV_OPT_TYPE_CONST, {.i64 =
FF_DEBUG_BUFFERS }, INT_MIN, INT_MAX, V|D, "debug"},
{"thread_ops", "threading operations", 0, AV_OPT_TYPE_CONST, {.i64 =
FF_DEBUG_THREADS }, INT_MIN, INT_MAX, V|A|D, "debug"},
{"nomc", "skip motion compensation", 0, AV_OPT_TYPE_CONST, {.i64 =
FF_DEBUG_NOMC }, INT_MIN, INT_MAX, V|A|D, "debug"},
+{"extractqp", "enable QP extraction per frame", 0, AV_OPT_TYPE_CONST, {.i64 =
FF_DEBUG_EXTRACTQP }, INT_MIN, INT_MAX, V|D, "debug"},
{"dia_size", "diamond type & size for motion estimation", OFFSET(dia_size),
AV_OPT_TYPE_INT, {.i64 = DEFAULT }, INT_MIN, INT_MAX, V|E},
{"last_pred", "amount of motion predictors from the previous frame",
OFFSET(last_predictor_count), AV_OPT_TYPE_INT, {.i64 = DEFAULT }, INT_MIN,
INT_MAX, V|E},
#if FF_API_PRIVATE_OPT
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/frame.h b/libavutil/frame.h
index 5d3231e7bb..d48ccf342f 100644
--- a/libavutil/frame.h
+++ b/libavutil/frame.h
@@ -179,6 +179,12 @@ enum AVFrameSideDataType {
* array element is implied by AVFrameSideData.size /
AVRegionOfInterest.self_size.
*/
AV_FRAME_DATA_REGIONS_OF_INTEREST,
+ /**
+ * To extract quantization parameters from supported decoders.
+ * The data stored is AVQuantizationParamsArray type, described in
+ * libavuitls/quantization_params.h
+ */
+ AV_FRAME_DATA_QUANTIZATION_PARAMS,
};
enum AVActiveFormatDescription {
diff --git a/libavutil/quantization_params.c b/libavutil/quantization_params.c
new file mode 100644
index 0000000000..230a9869bb
--- /dev/null
+++ b/libavutil/quantization_params.c
@@ -0,0 +1,40 @@
+/*
+ * 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"};
+
+char* getQPTypeStr(enum AVCodecID codec_id, int index) {
+ switch (codec_id) {
+ case AV_CODEC_ID_H264:
+ return QP_NAMES_H264[index];
+ case AV_CODEC_ID_VP9:
+ return QP_NAMES_VP9[index];
+ case AV_CODEC_ID_AV1:
+ return QP_NAMES_AV1[index];
+ default:
+ return NULL;
+ }
+}
diff --git a/libavutil/quantization_params.h b/libavutil/quantization_params.h
new file mode 100644
index 0000000000..a48c472143
--- /dev/null
+++ b/libavutil/quantization_params.h
@@ -0,0 +1,102 @@
+/*
+ * 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
+
+#include "libavcodec/avcodec.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;
+ int codec_id;
+} AVQuantizationParamsArray;
+
+/**
+ * Enums for different codecs to store qp in the type array
+ * Each enum must have an array of strings describing each field
+ */
+char* getQPTypeStr(enum AVCodecID codec_id, int index);
+
+extern const char* const QP_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 */
--
2.22.0.709.g102302147b-goog
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