55 for (pass = 1; pass <= 2; pass++) {
56 long value, range_start, range_end;
61 for (str = list_string; *
str;) {
62 value = strtol(str, &value_end, 0);
65 str = (
const char *)value_end;
69 range_end = strtol(str, &value_end, 0);
73 for (value = range_start; value < range_end; value++) {
121 for (i = frag->
nb_units - 1; i >= 0; i--) {
122 for (j = 0; j < ctx->
nb_types; j++) {
158 "remove_types is required.\n");
218 #define OFFSET(x) offsetof(FilterUnitsContext, x) 219 #define FLAGS (AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_BSF_PARAM) 221 {
"pass_types",
"List of unit types to pass through the filter.",
224 {
"remove_types",
"List of unit types to remove in the filter.",
239 .
name =
"filter_units",
241 .priv_class = &filter_units_class,
int nb_units
Number of units in this fragment.
AVCodecParameters * par_out
Parameters of the output stream.
static const AVClass filter_units_class
#define LIBAVUTIL_VERSION_INT
int ff_cbs_write_packet(CodedBitstreamContext *ctx, AVPacket *pkt, CodedBitstreamFragment *frag)
Write the bitstream of a fragment to a packet.
static av_cold int init(AVCodecContext *avctx)
int ff_cbs_init(CodedBitstreamContext **ctx_ptr, enum AVCodecID codec_id, void *log_ctx)
Create and initialise a new context for the given codec.
CodedBitstreamUnitType type
Codec-specific type of this unit.
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
The bitstream filter state.
const char * av_default_item_name(void *ptr)
Return the context name.
CodedBitstreamContext * cbc
void * priv_data
Opaque filter-specific private data.
const char * class_name
The name of the class; usually it is the same name as the context structure type to which the AVClass...
uint32_t CodedBitstreamUnitType
The codec-specific type of a bitstream unit.
GLsizei GLboolean const GLfloat * value
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.
CodedBitstreamUnit * units
Pointer to an array of units of length nb_units_allocated.
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 a...
static int filter_units_init(AVBSFContext *bsf)
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
filter_frame For filters that do not use the this method is called when a frame is pushed to the filter s input It can be called at any time except in a reentrant way If the input frame is enough to produce then the filter should push the output frames on the output link immediately As an exception to the previous rule if the input frame is enough to produce several output frames then the filter needs output only at least one per link The additional frames can be left buffered in the filter
static void filter_units_close(AVBSFContext *bsf)
enum FilterUnitsContext::@57 mode
static int filter_units_filter(AVBSFContext *bsf, AVPacket *pkt)
int ff_cbs_write_extradata(CodedBitstreamContext *ctx, AVCodecParameters *par, CodedBitstreamFragment *frag)
Write the bitstream of a fragment to the extradata in codec parameters.
const char * remove_types
int nb_decompose_unit_types
Length of the decompose_unit_types array.
Coded bitstream fragment structure, combining one or more units.
void av_packet_unref(AVPacket *pkt)
Wipe the packet.
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFrame structure Format for each input and each output the list of supported formats For video that means pixel format For audio that means channel sample they are references to shared objects When the negotiation mechanism computes the intersection of the formats supported at each end of a all references to both lists are replaced with a reference to the intersection And when a single format is eventually chosen for a link amongst the remaining list
CodedBitstreamUnitType * type_list
const AVBitStreamFilter ff_filter_units_bsf
Describe the class of an AVClass context structure.
Context structure for coded bitstream operations.
void ff_cbs_delete_unit(CodedBitstreamFragment *frag, int position)
Delete a unit from a fragment and free all memory it uses.
void ff_cbs_close(CodedBitstreamContext **ctx_ptr)
Close a context and free all internal state.
const CodedBitstreamUnitType * decompose_unit_types
Array of unit types which should be decomposed when reading.
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 dec...
CodedBitstreamFragment fragment
common internal and external API header
static enum AVCodecID codec_ids[]
enum AVCodecID ff_cbs_all_codec_ids[]
Table of all supported codec IDs.
static const AVOption filter_units_options[]
static int filter_units_make_type_list(const char *list_string, CodedBitstreamUnitType **type_list, int *nb_types)
uint8_t * extradata
Extra binary data needed for initializing the decoder, codec-dependent.
void ff_cbs_fragment_free(CodedBitstreamFragment *frag)
Free the units array of a fragment in addition to what ff_cbs_fragment_reset does.
#define av_malloc_array(a, b)
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFrame structure Format for each input and each output the list of supported formats For video that means pixel format For audio that means channel sample they are references to shared objects When the negotiation mechanism computes the intersection of the formats supported at each end of a all references to both lists are replaced with a reference to the intersection And when a single format is eventually chosen for a link amongst the remaining all references to the list are updated That means that if a filter requires that its input and output have the same format amongst a supported all it has to do is use a reference to the same list of formats query_formats can leave some formats unset and return AVERROR(EAGAIN) to cause the negotiation mechanism toagain later.That can be used by filters with complex requirements to use the format negotiated on one link to set the formats supported on another.Frame references ownership and permissions
This structure stores compressed data.
AVCodecParameters * par_in
Parameters of the input stream.
int ff_bsf_get_packet_ref(AVBSFContext *ctx, AVPacket *pkt)
Called by bitstream filters to get packet for filtering.