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authortrav90 <travawine@palemoon.org>2018-10-19 23:05:00 -0500
committertrav90 <travawine@palemoon.org>2018-10-19 23:05:03 -0500
commitd2499ead93dc4298c0882fe98902acb1b5209f99 (patch)
treecb0b942aed59e5108f9a3e9d64e7b77854383421 /third_party/aom/av1/decoder/obu.c
parent41fbdea457bf50c0a43e1c27c5cbf7f0a3a9eb33 (diff)
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Update libaom to commit ID 1e227d41f0616de9548a673a83a21ef990b62591
Diffstat (limited to 'third_party/aom/av1/decoder/obu.c')
-rw-r--r--third_party/aom/av1/decoder/obu.c176
1 files changed, 17 insertions, 159 deletions
diff --git a/third_party/aom/av1/decoder/obu.c b/third_party/aom/av1/decoder/obu.c
index 715bc6837..44ecf818e 100644
--- a/third_party/aom/av1/decoder/obu.c
+++ b/third_party/aom/av1/decoder/obu.c
@@ -18,6 +18,7 @@
#include "aom_ports/mem_ops.h"
#include "av1/common/common.h"
+#include "av1/common/obu_util.h"
#include "av1/common/timing.h"
#include "av1/decoder/decoder.h"
#include "av1/decoder/decodeframe.h"
@@ -42,85 +43,6 @@ typedef enum {
SCALABILITY_SS = 14
} SCALABILITY_STRUCTURES;
-// Returns 1 when OBU type is valid, and 0 otherwise.
-static int valid_obu_type(int obu_type) {
- int valid_type = 0;
- switch (obu_type) {
- case OBU_SEQUENCE_HEADER:
- case OBU_TEMPORAL_DELIMITER:
- case OBU_FRAME_HEADER:
- case OBU_TILE_GROUP:
- case OBU_METADATA:
- case OBU_FRAME:
- case OBU_REDUNDANT_FRAME_HEADER:
- case OBU_TILE_LIST:
- case OBU_PADDING: valid_type = 1; break;
- default: break;
- }
- return valid_type;
-}
-
-// Parses OBU header and stores values in 'header'.
-static aom_codec_err_t read_obu_header(struct aom_read_bit_buffer *rb,
- int is_annexb, ObuHeader *header) {
- if (!rb || !header) return AOM_CODEC_INVALID_PARAM;
-
- const ptrdiff_t bit_buffer_byte_length = rb->bit_buffer_end - rb->bit_buffer;
- if (bit_buffer_byte_length < 1) return AOM_CODEC_CORRUPT_FRAME;
-
- header->size = 1;
-
- if (aom_rb_read_bit(rb) != 0) {
- // Forbidden bit. Must not be set.
- return AOM_CODEC_CORRUPT_FRAME;
- }
-
- header->type = (OBU_TYPE)aom_rb_read_literal(rb, 4);
-
- if (!valid_obu_type(header->type)) return AOM_CODEC_CORRUPT_FRAME;
-
- header->has_extension = aom_rb_read_bit(rb);
- header->has_size_field = aom_rb_read_bit(rb);
-
- if (!header->has_size_field && !is_annexb) {
- // section 5 obu streams must have obu_size field set.
- return AOM_CODEC_UNSUP_BITSTREAM;
- }
-
- if (aom_rb_read_bit(rb) != 0) {
- // obu_reserved_1bit must be set to 0.
- return AOM_CODEC_CORRUPT_FRAME;
- }
-
- if (header->has_extension) {
- if (bit_buffer_byte_length == 1) return AOM_CODEC_CORRUPT_FRAME;
-
- header->size += 1;
- header->temporal_layer_id = aom_rb_read_literal(rb, 3);
- header->spatial_layer_id = aom_rb_read_literal(rb, 2);
- if (aom_rb_read_literal(rb, 3) != 0) {
- // extension_header_reserved_3bits must be set to 0.
- return AOM_CODEC_CORRUPT_FRAME;
- }
- }
-
- return AOM_CODEC_OK;
-}
-
-aom_codec_err_t aom_read_obu_header(uint8_t *buffer, size_t buffer_length,
- size_t *consumed, ObuHeader *header,
- int is_annexb) {
- if (buffer_length < 1 || !consumed || !header) return AOM_CODEC_INVALID_PARAM;
-
- // TODO(tomfinegan): Set the error handler here and throughout this file, and
- // confirm parsing work done via aom_read_bit_buffer is successful.
- struct aom_read_bit_buffer rb = { buffer, buffer + buffer_length, 0, NULL,
- NULL };
- aom_codec_err_t parse_result = read_obu_header(&rb, is_annexb, header);
- if (parse_result == AOM_CODEC_OK) *consumed = header->size;
- return parse_result;
-}
-
aom_codec_err_t aom_get_num_layers_from_operating_point_idc(
int operating_point_idc, unsigned int *number_spatial_layers,
unsigned int *number_temporal_layers) {
@@ -208,7 +130,7 @@ static uint32_t read_sequence_header_obu(AV1Decoder *pbi,
SequenceHeader *const seq_params = &sh;
seq_params->profile = av1_read_profile(rb);
- if (seq_params->profile > PROFILE_2) {
+ if (seq_params->profile > CONFIG_MAX_DECODE_PROFILE) {
cm->error.error_code = AOM_CODEC_UNSUP_BITSTREAM;
return 0;
}
@@ -349,10 +271,8 @@ static uint32_t read_sequence_header_obu(AV1Decoder *pbi,
// If a sequence header has been decoded before, we check if the new
// one is consistent with the old one.
if (pbi->sequence_header_ready) {
- if (!are_seq_headers_consistent(&cm->seq_params, seq_params)) {
- aom_internal_error(&cm->error, AOM_CODEC_UNSUP_BITSTREAM,
- "Inconsistent sequence headers received.");
- }
+ if (!are_seq_headers_consistent(&cm->seq_params, seq_params))
+ pbi->sequence_header_changed = 1;
}
cm->seq_params = *seq_params;
@@ -620,9 +540,9 @@ static void read_metadata_hdr_mdcv(const uint8_t *data, size_t sz) {
static void scalability_structure(struct aom_read_bit_buffer *rb) {
int spatial_layers_cnt = aom_rb_read_literal(rb, 2);
- int spatial_layer_dimensions_present_flag = aom_rb_read_literal(rb, 1);
- int spatial_layer_description_present_flag = aom_rb_read_literal(rb, 1);
- int temporal_group_description_present_flag = aom_rb_read_literal(rb, 1);
+ int spatial_layer_dimensions_present_flag = aom_rb_read_bit(rb);
+ int spatial_layer_description_present_flag = aom_rb_read_bit(rb);
+ int temporal_group_description_present_flag = aom_rb_read_bit(rb);
aom_rb_read_literal(rb, 3); // reserved
if (spatial_layer_dimensions_present_flag) {
@@ -643,8 +563,8 @@ static void scalability_structure(struct aom_read_bit_buffer *rb) {
temporal_group_size = aom_rb_read_literal(rb, 8);
for (i = 0; i < temporal_group_size; i++) {
aom_rb_read_literal(rb, 3);
- aom_rb_read_literal(rb, 1);
- aom_rb_read_literal(rb, 1);
+ aom_rb_read_bit(rb);
+ aom_rb_read_bit(rb);
int temporal_group_ref_cnt = aom_rb_read_literal(rb, 3);
for (j = 0; j < temporal_group_ref_cnt; j++) {
aom_rb_read_literal(rb, 8);
@@ -716,61 +636,6 @@ static size_t read_metadata(const uint8_t *data, size_t sz) {
return sz;
}
-static aom_codec_err_t read_obu_size(const uint8_t *data,
- size_t bytes_available,
- size_t *const obu_size,
- size_t *const length_field_size) {
- uint64_t u_obu_size = 0;
- if (aom_uleb_decode(data, bytes_available, &u_obu_size, length_field_size) !=
- 0) {
- return AOM_CODEC_CORRUPT_FRAME;
- }
-
- if (u_obu_size > UINT32_MAX) return AOM_CODEC_CORRUPT_FRAME;
- *obu_size = (size_t)u_obu_size;
- return AOM_CODEC_OK;
-}
-
-aom_codec_err_t aom_read_obu_header_and_size(const uint8_t *data,
- size_t bytes_available,
- int is_annexb,
- ObuHeader *obu_header,
- size_t *const payload_size,
- size_t *const bytes_read) {
- size_t length_field_size = 0, obu_size = 0;
- aom_codec_err_t status;
-
- if (is_annexb) {
- // Size field comes before the OBU header, and includes the OBU header
- status =
- read_obu_size(data, bytes_available, &obu_size, &length_field_size);
-
- if (status != AOM_CODEC_OK) return status;
- }
-
- struct aom_read_bit_buffer rb = { data + length_field_size,
- data + bytes_available, 0, NULL, NULL };
-
- status = read_obu_header(&rb, is_annexb, obu_header);
- if (status != AOM_CODEC_OK) return status;
-
- if (is_annexb) {
- // Derive the payload size from the data we've already read
- if (obu_size < obu_header->size) return AOM_CODEC_CORRUPT_FRAME;
-
- *payload_size = obu_size - obu_header->size;
- } else {
- // Size field comes after the OBU header, and is just the payload size
- status = read_obu_size(data + obu_header->size,
- bytes_available - obu_header->size, payload_size,
- &length_field_size);
- if (status != AOM_CODEC_OK) return status;
- }
-
- *bytes_read = length_field_size + obu_header->size;
- return AOM_CODEC_OK;
-}
-
// On success, returns a boolean that indicates whether the decoding of the
// current frame is finished. On failure, sets cm->error.error_code and
// returns -1.
@@ -781,8 +646,6 @@ int aom_decode_frame_from_obus(struct AV1Decoder *pbi, const uint8_t *data,
int frame_decoding_finished = 0;
int is_first_tg_obu_received = 1;
uint32_t frame_header_size = 0;
- int seq_header_received = 0;
- size_t seq_header_size = 0;
ObuHeader obu_header;
memset(&obu_header, 0, sizeof(obu_header));
pbi->seen_frame_header = 0;
@@ -853,19 +716,8 @@ int aom_decode_frame_from_obus(struct AV1Decoder *pbi, const uint8_t *data,
pbi->seen_frame_header = 0;
break;
case OBU_SEQUENCE_HEADER:
- if (!seq_header_received) {
- decoded_payload_size = read_sequence_header_obu(pbi, &rb);
- if (cm->error.error_code != AOM_CODEC_OK) return -1;
-
- seq_header_size = decoded_payload_size;
- seq_header_received = 1;
- } else {
- // Seeing another sequence header, skip as all sequence headers are
- // required to be identical except for the contents of
- // operating_parameters_info and the amount of trailing bits.
- // TODO(yaowu): verifying redundant sequence headers are identical.
- decoded_payload_size = seq_header_size;
- }
+ decoded_payload_size = read_sequence_header_obu(pbi, &rb);
+ if (cm->error.error_code != AOM_CODEC_OK) return -1;
break;
case OBU_FRAME_HEADER:
case OBU_REDUNDANT_FRAME_HEADER:
@@ -889,6 +741,7 @@ int aom_decode_frame_from_obus(struct AV1Decoder *pbi, const uint8_t *data,
assert(rb.bit_offset == 0);
rb.bit_offset = 8 * frame_header_size;
}
+
decoded_payload_size = frame_header_size;
pbi->frame_header_size = frame_header_size;
@@ -938,6 +791,11 @@ int aom_decode_frame_from_obus(struct AV1Decoder *pbi, const uint8_t *data,
decoded_payload_size = read_metadata(data, payload_size);
break;
case OBU_TILE_LIST:
+ if (CONFIG_NORMAL_TILE_MODE) {
+ cm->error.error_code = AOM_CODEC_UNSUP_BITSTREAM;
+ return -1;
+ }
+
// This OBU type is purely for the large scale tile coding mode.
// The common camera frame header has to be already decoded.
if (!pbi->camera_frame_header_ready) {