avcodec/cbs_sei_syntax_template: add sei message film_grain_characteristics

Wu Jianhua committed 1 year ago

Commit bf3a7291 parent e618f7d3 files · +80 −0Browse files

Unified · Split

3 files

libavcodec/cbs_h2645.c +6 −0
libavcodec/cbs_sei.h +21 −0
libavcodec/cbs_sei_syntax_template.c +53 −0

 };
 static const SEIMessageTypeDescriptor cbs_sei_h274_types[] = {
+    {
+        SEI_TYPE_FILM_GRAIN_CHARACTERISTICS,
+        1, 0,
+        sizeof(SEIRawFilmGrainCharacteristics),
+        SEI_MESSAGE_RW(sei, film_grain_characteristics),
+    },
     SEI_MESSAGE_TYPE_END,
 };

libavcodec/cbs_sei.h+21−0

@@ -97,6 +97,27 @@ typedef struct SEIRawAmbientViewingEnvironment { · 96 unmodified lines
97	uint16_t ambient_light_y;	97	uint16_t ambient_light_y;
98	} SEIRawAmbientViewingEnvironment;	98	} SEIRawAmbientViewingEnvironment;
99		99
		100	typedef struct SEIRawFilmGrainCharacteristics {
		101	uint8_t fg_characteristics_cancel_flag;
		102	uint8_t fg_model_id;
		103	uint8_t fg_separate_colour_description_present_flag;
		104	uint8_t fg_bit_depth_luma_minus8;
		105	uint8_t fg_bit_depth_chroma_minus8;
		106	uint8_t fg_full_range_flag;
		107	uint8_t fg_colour_primaries;
		108	uint8_t fg_transfer_characteristics;
		109	uint8_t fg_matrix_coeffs;
		110	uint8_t fg_blending_mode_id;
		111	uint8_t fg_log2_scale_factor;
		112	uint8_t fg_comp_model_present_flag[3];
		113	uint8_t fg_num_intensity_intervals_minus1[3];
		114	uint8_t fg_num_model_values_minus1[3];
		115	uint8_t fg_intensity_interval_lower_bound[3][256];
		116	uint8_t fg_intensity_interval_upper_bound[3][256];
		117	int16_t fg_comp_model_value[3][256][6];
		118	uint8_t fg_characteristics_persistence_flag;
		119	} SEIRawFilmGrainCharacteristics;
		120
100	typedef struct SEIRawMessage {	121	typedef struct SEIRawMessage {
101	uint32_t payload_type;	122	uint32_t payload_type;
102	uint32_t payload_size;	123	uint32_t payload_size;

libavcodec/cbs_sei_syntax_template.c+53−0

@@ -224,6 +224,59 @@ SEI_FUNC(ambient_viewing_environment, · 223 unmodified lines
224	return 0;	224	return 0;
225	}	225	}
226		226
		227	SEI_FUNC(film_grain_characteristics,
		228	(CodedBitstreamContext ctx, RWContext rw,
		229	SEIRawFilmGrainCharacteristics *current,
		230	SEIMessageState *state))
		231	{
		232	int err, c, i, j;
		233
		234	HEADER("Film Grain Characteristics");
		235
		236	flag(fg_characteristics_cancel_flag);
		237	if (!current->fg_characteristics_cancel_flag) {
		238	int filmGrainBitDepth[3];
		239
		240	u(2, fg_model_id, 0, 1);
		241	flag(fg_separate_colour_description_present_flag);
		242	if (current->fg_separate_colour_description_present_flag) {
		243	ub(3, fg_bit_depth_luma_minus8);
		244	ub(3, fg_bit_depth_chroma_minus8);
		245	flag(fg_full_range_flag);
		246	ub(8, fg_colour_primaries);
		247	ub(8, fg_transfer_characteristics);
		248	ub(8, fg_matrix_coeffs);
		249	}
		250
		251	filmGrainBitDepth[0] = current->fg_bit_depth_luma_minus8 + 8;
		252	filmGrainBitDepth[1] =
		253	filmGrainBitDepth[2] = current->fg_bit_depth_chroma_minus8 + 8;
		254
		255	u(2, fg_blending_mode_id, 0, 1);
		256	ub(4, fg_log2_scale_factor);
		257	for (c = 0; c < 3; c++)
		258	flags(fg_comp_model_present_flag[c], 1, c);
		259
		260	for (c = 0; c < 3; c++) {
		261	if (current->fg_comp_model_present_flag[c]) {
		262	ubs(8, fg_num_intensity_intervals_minus1[c], 1, c);
		263	us(3, fg_num_model_values_minus1[c], 0, 5, 1, c);
		264	for (i = 0; i <= current->fg_num_intensity_intervals_minus1[c]; i++) {
		265	ubs(8, fg_intensity_interval_lower_bound[c][i], 2, c, i);
		266	ubs(8, fg_intensity_interval_upper_bound[c][i], 2, c, i);
		267	for (j = 0; j <= current->fg_num_model_values_minus1[c]; j++)
		268	ses(fg_comp_model_value[c][i][j], 0 - current->fg_model_id * (1 << (filmGrainBitDepth[c] - 1)),
		269	((1 << filmGrainBitDepth[c]) - 1) - current->fg_model_id * (1 << (filmGrainBitDepth[c] - 1)),
		270	3, c, i, j);
		271	}
		272	}
		273	}
		274	flag(fg_characteristics_persistence_flag);
		275	}
		276
		277	return 0;
		278	}
		279
227	static int FUNC(message)(CodedBitstreamContext ctx, RWContext rw,	280	static int FUNC(message)(CodedBitstreamContext ctx, RWContext rw,
228	SEIRawMessage *current)	281	SEIRawMessage *current)
229	{	282	{

avcodec/cbs_sei_syntax_template: add sei message film_grain_characteristics

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