|
FFmpeg
|
#include <string.h>#include "config.h"#include "libavutil/avassert.h"#include "libavutil/buffer.h"#include "libavutil/common.h"#include "libavutil/opt.h"#include "cbs.h"#include "cbs_internal.h"Go to the source code of this file.
Functions | |
| int | ff_cbs_init (CodedBitstreamContext **ctx_ptr, enum AVCodecID codec_id, void *log_ctx) |
| Create and initialise a new context for the given codec. More... | |
| void | ff_cbs_flush (CodedBitstreamContext *ctx) |
| Reset all internal state in a context. More... | |
| void | ff_cbs_close (CodedBitstreamContext **ctx_ptr) |
| Close a context and free all internal state. More... | |
| static void | cbs_unit_uninit (CodedBitstreamUnit *unit) |
| void | ff_cbs_fragment_reset (CodedBitstreamFragment *frag) |
| Free the units contained in a fragment as well as the fragment's own data buffer, but not the units array itself. More... | |
| void | ff_cbs_fragment_free (CodedBitstreamFragment *frag) |
| Free the units array of a fragment in addition to what ff_cbs_fragment_reset does. More... | |
| static int | cbs_read_fragment_content (CodedBitstreamContext *ctx, CodedBitstreamFragment *frag) |
| static int | cbs_fill_fragment_data (CodedBitstreamFragment *frag, const uint8_t *data, size_t size) |
| static int | cbs_read_data (CodedBitstreamContext *ctx, CodedBitstreamFragment *frag, AVBufferRef *buf, const uint8_t *data, size_t size, int header) |
| int | ff_cbs_read_extradata (CodedBitstreamContext *ctx, CodedBitstreamFragment *frag, const AVCodecParameters *par) |
| Read the extradata bitstream found in codec parameters into a fragment, then split into units and decompose. More... | |
| int | ff_cbs_read_extradata_from_codec (CodedBitstreamContext *ctx, CodedBitstreamFragment *frag, const AVCodecContext *avctx) |
| Read the extradata bitstream found in a codec context into a fragment, then split into units and decompose. More... | |
| int | ff_cbs_read_packet (CodedBitstreamContext *ctx, CodedBitstreamFragment *frag, const AVPacket *pkt) |
| Read the data bitstream from a packet into a fragment, then split into units and decompose. More... | |
| int | ff_cbs_read (CodedBitstreamContext *ctx, CodedBitstreamFragment *frag, const uint8_t *data, size_t size) |
| Read a bitstream from a memory region into a fragment, then split into units and decompose. More... | |
| static int | cbs_write_unit_data (CodedBitstreamContext *ctx, CodedBitstreamUnit *unit) |
| int | ff_cbs_write_fragment_data (CodedBitstreamContext *ctx, CodedBitstreamFragment *frag) |
| Write the content of the fragment to its own internal buffer. More... | |
| int | ff_cbs_write_extradata (CodedBitstreamContext *ctx, AVCodecParameters *par, CodedBitstreamFragment *frag) |
| Write the bitstream of a fragment to the extradata in codec parameters. More... | |
| int | ff_cbs_write_packet (CodedBitstreamContext *ctx, AVPacket *pkt, CodedBitstreamFragment *frag) |
| Write the bitstream of a fragment to a packet. More... | |
| void | ff_cbs_trace_header (CodedBitstreamContext *ctx, const char *name) |
| void | ff_cbs_trace_syntax_element (CodedBitstreamContext *ctx, int position, const char *str, const int *subscripts, const char *bits, int64_t value) |
| int | ff_cbs_read_unsigned (CodedBitstreamContext *ctx, GetBitContext *gbc, int width, const char *name, const int *subscripts, uint32_t *write_to, uint32_t range_min, uint32_t range_max) |
| int | ff_cbs_write_unsigned (CodedBitstreamContext *ctx, PutBitContext *pbc, int width, const char *name, const int *subscripts, uint32_t value, uint32_t range_min, uint32_t range_max) |
| int | ff_cbs_read_signed (CodedBitstreamContext *ctx, GetBitContext *gbc, int width, const char *name, const int *subscripts, int32_t *write_to, int32_t range_min, int32_t range_max) |
| int | ff_cbs_write_signed (CodedBitstreamContext *ctx, PutBitContext *pbc, int width, const char *name, const int *subscripts, int32_t value, int32_t range_min, int32_t range_max) |
| int | ff_cbs_alloc_unit_content (CodedBitstreamUnit *unit, size_t size, void(*free)(void *opaque, uint8_t *data)) |
| int | ff_cbs_alloc_unit_data (CodedBitstreamUnit *unit, size_t size) |
| Allocate a new internal data buffer of the given size in the unit. More... | |
| static int | cbs_insert_unit (CodedBitstreamFragment *frag, int position) |
| int | ff_cbs_insert_unit_content (CodedBitstreamFragment *frag, int position, CodedBitstreamUnitType type, void *content, AVBufferRef *content_buf) |
| Insert a new unit into a fragment with the given content. More... | |
| int | ff_cbs_insert_unit_data (CodedBitstreamFragment *frag, int position, CodedBitstreamUnitType type, uint8_t *data, size_t data_size, AVBufferRef *data_buf) |
| Insert a new unit into a fragment with the given data bitstream. More... | |
| void | ff_cbs_delete_unit (CodedBitstreamFragment *frag, int position) |
| Delete a unit from a fragment and free all memory it uses. More... | |
| static void | cbs_default_free_unit_content (void *opaque, uint8_t *data) |
| static const CodedBitstreamUnitTypeDescriptor * | cbs_find_unit_type_desc (CodedBitstreamContext *ctx, CodedBitstreamUnit *unit) |
| int | ff_cbs_alloc_unit_content2 (CodedBitstreamContext *ctx, CodedBitstreamUnit *unit) |
| Allocate a new internal content buffer matching the type of the unit. More... | |
| static int | cbs_clone_unit_content (AVBufferRef **clone_ref, CodedBitstreamUnit *unit, const CodedBitstreamUnitTypeDescriptor *desc) |
| int | ff_cbs_make_unit_refcounted (CodedBitstreamContext *ctx, CodedBitstreamUnit *unit) |
| Make the content of a unit refcounted. More... | |
| int | ff_cbs_make_unit_writable (CodedBitstreamContext *ctx, CodedBitstreamUnit *unit) |
| Make the content of a unit writable so that internal fields can be modified. More... | |
Variables | |
| static const CodedBitstreamType *const | cbs_type_table [] |
| enum AVCodecID | ff_cbs_all_codec_ids [] |
| Table of all supported codec IDs. More... | |
| int ff_cbs_init | ( | CodedBitstreamContext ** | ctx_ptr, |
| enum AVCodecID | codec_id, | ||
| void * | log_ctx | ||
| ) |
Create and initialise a new context for the given codec.
Definition at line 75 of file cbs.c.
Referenced by av1_decode_init(), av1_frame_merge_init(), av1_frame_split_init(), av1_parser_init(), ff_cbs_bsf_generic_init(), filter_units_init(), trace_headers_init(), vaapi_encode_h264_configure(), vaapi_encode_h265_configure(), vaapi_encode_mjpeg_configure(), and vaapi_encode_mpeg2_configure().
| void ff_cbs_flush | ( | CodedBitstreamContext * | ctx | ) |
Reset all internal state in a context.
Definition at line 120 of file cbs.c.
Referenced by av1_decode_flush().
| void ff_cbs_close | ( | CodedBitstreamContext ** | ctx_ptr | ) |
Close a context and free all internal state.
Definition at line 126 of file cbs.c.
Referenced by av1_decode_free(), av1_frame_merge_close(), av1_frame_split_close(), av1_parser_close(), ff_cbs_bsf_generic_close(), filter_units_close(), trace_headers_close(), vaapi_encode_h264_close(), vaapi_encode_h265_close(), vaapi_encode_mjpeg_close(), and vaapi_encode_mpeg2_close().
|
static |
Definition at line 145 of file cbs.c.
Referenced by ff_cbs_delete_unit(), and ff_cbs_fragment_reset().
| void ff_cbs_fragment_reset | ( | CodedBitstreamFragment * | frag | ) |
Free the units contained in a fragment as well as the fragment's own data buffer, but not the units array itself.
Definition at line 156 of file cbs.c.
Referenced by av1_decode_frame(), av1_decode_init(), av1_frame_merge_filter(), av1_frame_merge_flush(), av1_frame_split_filter(), av1_frame_split_flush(), av1_frame_split_init(), av1_parser_parse(), cbs_bsf_update_side_data(), ff_cbs_bsf_generic_filter(), ff_cbs_bsf_generic_init(), ff_cbs_fragment_free(), filter_units_filter(), filter_units_init(), trace_headers(), trace_headers_init(), vaapi_encode_h264_write_extra_header(), vaapi_encode_h264_write_sequence_header(), vaapi_encode_h264_write_slice_header(), vaapi_encode_h265_write_extra_header(), vaapi_encode_h265_write_sequence_header(), vaapi_encode_h265_write_slice_header(), vaapi_encode_mjpeg_write_image_header(), vaapi_encode_mpeg2_write_picture_header(), and vaapi_encode_mpeg2_write_sequence_header().
| void ff_cbs_fragment_free | ( | CodedBitstreamFragment * | frag | ) |
Free the units array of a fragment in addition to what ff_cbs_fragment_reset does.
Definition at line 170 of file cbs.c.
Referenced by av1_decode_free(), av1_frame_merge_close(), av1_frame_split_close(), av1_parser_close(), ff_cbs_bsf_generic_close(), filter_units_close(), trace_headers_close(), vaapi_encode_h264_close(), vaapi_encode_h265_close(), vaapi_encode_mjpeg_close(), and vaapi_encode_mpeg2_close().
|
static |
Definition at line 178 of file cbs.c.
Referenced by cbs_read_data().
|
static |
Definition at line 221 of file cbs.c.
Referenced by cbs_read_data().
|
static |
Definition at line 241 of file cbs.c.
Referenced by ff_cbs_read(), ff_cbs_read_extradata(), ff_cbs_read_extradata_from_codec(), and ff_cbs_read_packet().
| int ff_cbs_read_extradata | ( | CodedBitstreamContext * | ctx, |
| CodedBitstreamFragment * | frag, | ||
| const AVCodecParameters * | par | ||
| ) |
Read the extradata bitstream found in codec parameters into a fragment, then split into units and decompose.
This also updates the internal state, so will need to be called for codecs with extradata to read parameter sets necessary for further parsing even if the fragment itself is not desired.
The fragment must have been zeroed or reset via ff_cbs_fragment_reset before use.
Definition at line 270 of file cbs.c.
Referenced by av1_frame_split_init(), ff_cbs_bsf_generic_init(), filter_units_init(), and trace_headers_init().
| int ff_cbs_read_extradata_from_codec | ( | CodedBitstreamContext * | ctx, |
| CodedBitstreamFragment * | frag, | ||
| const AVCodecContext * | avctx | ||
| ) |
Read the extradata bitstream found in a codec context into a fragment, then split into units and decompose.
This acts identical to ff_cbs_read_extradata() for the case where you already have a codec context.
Definition at line 279 of file cbs.c.
Referenced by av1_decode_init(), and av1_parser_parse().
| int ff_cbs_read_packet | ( | CodedBitstreamContext * | ctx, |
| CodedBitstreamFragment * | frag, | ||
| const AVPacket * | pkt | ||
| ) |
Read the data bitstream from a packet into a fragment, then split into units and decompose.
This also updates the internal state of the coded bitstream context with any persistent data from the fragment which may be required to read following fragments (e.g. parameter sets).
The fragment must have been zeroed or reset via ff_cbs_fragment_reset before use.
Definition at line 288 of file cbs.c.
Referenced by av1_decode_frame(), av1_frame_merge_filter(), av1_frame_split_filter(), ff_cbs_bsf_generic_filter(), filter_units_filter(), and trace_headers().
| int ff_cbs_read | ( | CodedBitstreamContext * | ctx, |
| CodedBitstreamFragment * | frag, | ||
| const uint8_t * | data, | ||
| size_t | size | ||
| ) |
Read a bitstream from a memory region into a fragment, then split into units and decompose.
This also updates the internal state of the coded bitstream context with any persistent data from the fragment which may be required to read following fragments (e.g. parameter sets).
The fragment must have been zeroed or reset via ff_cbs_fragment_reset before use.
Definition at line 296 of file cbs.c.
Referenced by av1_parser_parse(), and cbs_bsf_update_side_data().
|
static |
Definition at line 304 of file cbs.c.
Referenced by ff_cbs_write_fragment_data().
| int ff_cbs_write_fragment_data | ( | CodedBitstreamContext * | ctx, |
| CodedBitstreamFragment * | frag | ||
| ) |
Write the content of the fragment to its own internal buffer.
Writes the content of all units and then assembles them into a new data buffer. When modifying the content of decomposed units, this can be used to regenerate the bitstream form of units or the whole fragment so that it can be extracted for other use.
This also updates the internal state of the coded bitstream context with any persistent data from the fragment which may be required to write following fragments (e.g. parameter sets).
Definition at line 358 of file cbs.c.
Referenced by cbs_bsf_update_side_data(), ff_cbs_write_extradata(), ff_cbs_write_packet(), vaapi_encode_h264_write_access_unit(), vaapi_encode_h265_write_access_unit(), vaapi_encode_mjpeg_write_image_header(), and vaapi_encode_mpeg2_write_fragment().
| int ff_cbs_write_extradata | ( | CodedBitstreamContext * | ctx, |
| AVCodecParameters * | par, | ||
| CodedBitstreamFragment * | frag | ||
| ) |
Write the bitstream of a fragment to the extradata in codec parameters.
Modifies context and fragment as ff_cbs_write_fragment_data does and replaces any existing extradata in the structure.
Definition at line 394 of file cbs.c.
Referenced by ff_cbs_bsf_generic_init(), and filter_units_init().
| int ff_cbs_write_packet | ( | CodedBitstreamContext * | ctx, |
| AVPacket * | pkt, | ||
| CodedBitstreamFragment * | frag | ||
| ) |
Write the bitstream of a fragment to a packet.
Modifies context and fragment as ff_cbs_write_fragment_data does.
On success, the packet's buf is unreferenced and its buf, data and size fields are set to the corresponding values from the newly updated fragment; other fields are not touched. On failure, the packet is not touched at all.
Definition at line 419 of file cbs.c.
Referenced by av1_frame_merge_filter(), ff_cbs_bsf_generic_filter(), and filter_units_filter().
| void ff_cbs_trace_header | ( | CodedBitstreamContext * | ctx, |
| const char * | name | ||
| ) |
| void ff_cbs_trace_syntax_element | ( | CodedBitstreamContext * | ctx, |
| int | position, | ||
| const char * | str, | ||
| const int * | subscripts, | ||
| const char * | bits, | ||
| int64_t | value | ||
| ) |
Definition at line 453 of file cbs.c.
Referenced by cbs_av1_read_increment(), cbs_av1_read_leb128(), cbs_av1_read_ns(), cbs_av1_read_subexp(), cbs_av1_read_uvlc(), cbs_av1_write_increment(), cbs_av1_write_leb128(), cbs_av1_write_ns(), cbs_av1_write_subexp(), cbs_av1_write_uvlc(), cbs_read_se_golomb(), cbs_read_ue_golomb(), cbs_vp9_read_increment(), cbs_vp9_read_le(), cbs_vp9_read_s(), cbs_vp9_write_increment(), cbs_vp9_write_le(), cbs_vp9_write_s(), cbs_write_se_golomb(), cbs_write_ue_golomb(), ff_cbs_read_signed(), ff_cbs_read_unsigned(), ff_cbs_write_signed(), and ff_cbs_write_unsigned().
| int ff_cbs_read_unsigned | ( | CodedBitstreamContext * | ctx, |
| GetBitContext * | gbc, | ||
| int | width, | ||
| const char * | name, | ||
| const int * | subscripts, | ||
| uint32_t * | write_to, | ||
| uint32_t | range_min, | ||
| uint32_t | range_max | ||
| ) |
Definition at line 503 of file cbs.c.
Referenced by cbs_av1_read_leb128(), and cbs_av1_read_subexp().
| int ff_cbs_write_unsigned | ( | CodedBitstreamContext * | ctx, |
| PutBitContext * | pbc, | ||
| int | width, | ||
| const char * | name, | ||
| const int * | subscripts, | ||
| uint32_t | value, | ||
| uint32_t | range_min, | ||
| uint32_t | range_max | ||
| ) |
Definition at line 546 of file cbs.c.
Referenced by cbs_av1_write_leb128(), and cbs_av1_write_subexp().
| int ff_cbs_read_signed | ( | CodedBitstreamContext * | ctx, |
| GetBitContext * | gbc, | ||
| int | width, | ||
| const char * | name, | ||
| const int * | subscripts, | ||
| int32_t * | write_to, | ||
| int32_t | range_min, | ||
| int32_t | range_max | ||
| ) |
| int ff_cbs_write_signed | ( | CodedBitstreamContext * | ctx, |
| PutBitContext * | pbc, | ||
| int | width, | ||
| const char * | name, | ||
| const int * | subscripts, | ||
| int32_t | value, | ||
| int32_t | range_min, | ||
| int32_t | range_max | ||
| ) |
| int ff_cbs_alloc_unit_content | ( | CodedBitstreamUnit * | unit, |
| size_t | size, | ||
| void(*)(void *opaque, uint8_t *data) | free | ||
| ) |
Definition at line 662 of file cbs.c.
Referenced by cbs_jpeg_read_unit().
| int ff_cbs_alloc_unit_data | ( | CodedBitstreamUnit * | unit, |
| size_t | size | ||
| ) |
Allocate a new internal data buffer of the given size in the unit.
The data buffer will have input padding.
Definition at line 682 of file cbs.c.
Referenced by cbs_write_unit_data().
|
static |
Definition at line 699 of file cbs.c.
Referenced by ff_cbs_insert_unit_content(), and ff_cbs_insert_unit_data().
| int ff_cbs_insert_unit_content | ( | CodedBitstreamFragment * | frag, |
| int | position, | ||
| CodedBitstreamUnitType | type, | ||
| void * | content, | ||
| AVBufferRef * | content_buf | ||
| ) |
Insert a new unit into a fragment with the given content.
The content structure continues to be owned by the caller if content_buf is not supplied.
Definition at line 737 of file cbs.c.
Referenced by av1_frame_merge_filter(), av1_metadata_update_fragment(), cbs_sei_get_unit(), h264_metadata_insert_aud(), h265_metadata_update_fragment(), mpeg2_metadata_update_fragment(), vaapi_encode_h264_add_nal(), vaapi_encode_h265_add_nal(), vaapi_encode_mjpeg_write_image_header(), and vaapi_encode_mpeg2_add_header().
| int ff_cbs_insert_unit_data | ( | CodedBitstreamFragment * | frag, |
| int | position, | ||
| CodedBitstreamUnitType | type, | ||
| uint8_t * | data, | ||
| size_t | data_size, | ||
| AVBufferRef * | data_buf | ||
| ) |
Insert a new unit into a fragment with the given data bitstream.
If data_buf is not supplied then data must have been allocated with av_malloc() and will on success become owned by the unit after this call or freed on error.
Definition at line 773 of file cbs.c.
Referenced by cbs_av1_split_fragment(), cbs_h2645_fragment_add_nals(), cbs_jpeg_split_fragment(), cbs_mpeg2_split_fragment(), and cbs_vp9_split_fragment().
| void ff_cbs_delete_unit | ( | CodedBitstreamFragment * | frag, |
| int | position | ||
| ) |
Delete a unit from a fragment and free all memory it uses.
Requires position to be >= 0 and < frag->nb_units.
Definition at line 812 of file cbs.c.
Referenced by av1_metadata_update_fragment(), filter_units_filter(), h264_metadata_update_fragment(), h264_redundant_pps_update_fragment(), and h265_metadata_update_fragment().
|
static |
Definition at line 828 of file cbs.c.
Referenced by cbs_clone_unit_content(), and ff_cbs_alloc_unit_content2().
|
static |
Definition at line 842 of file cbs.c.
Referenced by ff_cbs_alloc_unit_content2(), ff_cbs_make_unit_refcounted(), and ff_cbs_make_unit_writable().
| int ff_cbs_alloc_unit_content2 | ( | CodedBitstreamContext * | ctx, |
| CodedBitstreamUnit * | unit | ||
| ) |
Allocate a new internal content buffer matching the type of the unit.
The content will be zeroed.
Definition at line 869 of file cbs.c.
Referenced by cbs_av1_read_unit(), cbs_h2645_replace_ps(), cbs_h265_read_nal_unit(), cbs_mpeg2_read_unit(), cbs_sei_get_unit(), and cbs_vp9_read_unit().
|
static |
Definition at line 897 of file cbs.c.
Referenced by ff_cbs_make_unit_refcounted(), and ff_cbs_make_unit_writable().
| int ff_cbs_make_unit_refcounted | ( | CodedBitstreamContext * | ctx, |
| CodedBitstreamUnit * | unit | ||
| ) |
Make the content of a unit refcounted.
If the unit is not refcounted, this will do a deep copy of the unit content to new refcounted buffers.
It is not valid to call this function on a unit which does not have decomposed content.
Definition at line 963 of file cbs.c.
Referenced by cbs_av1_write_obu(), and ff_cbs_make_unit_writable().
| int ff_cbs_make_unit_writable | ( | CodedBitstreamContext * | ctx, |
| CodedBitstreamUnit * | unit | ||
| ) |
Make the content of a unit writable so that internal fields can be modified.
If it is known that there are no other references to the content of the unit, does nothing and returns success. Otherwise (including the case where the unit content is not refcounted), it does a full clone of the content (including any internal buffers) to make a new copy, and replaces the existing references inside the unit with that.
It is not valid to call this function on a unit which does not have decomposed content.
Definition at line 1011 of file cbs.c.
Referenced by h264_redundant_pps_fixup_pps().
|
static |
1.8.17