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56 long value, range_start, range_end;
61 for (
str = list_string; *
str;) {
65 str = (
const char *)value_end;
69 range_end = strtol(
str, &value_end, 0);
112 if (
ctx->mode == NOOP)
122 for (j = 0; j <
ctx->nb_types; j++) {
126 if (
ctx->mode == REMOVE ? j < ctx->nb_types
127 : j >=
ctx->nb_types)
156 if (
ctx->pass_types &&
ctx->remove_types) {
158 "remove_types is required.\n");
162 if (
ctx->pass_types) {
165 &
ctx->type_list, &
ctx->nb_types);
170 }
else if (
ctx->remove_types) {
173 &
ctx->type_list, &
ctx->nb_types);
187 ctx->cbc->decompose_unit_types =
ctx->type_list;
188 ctx->cbc->nb_decompose_unit_types = 0;
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 .
p.
name =
"filter_units",
static int filter_units_filter(AVBSFContext *bsf, AVPacket *pkt)
static void filter_units_close(AVBSFContext *bsf)
void av_packet_unref(AVPacket *pkt)
Wipe the packet.
AVCodecParameters * par_in
Parameters of the input stream.
uint8_t * extradata
Extra binary data needed for initializing the decoder, codec-dependent.
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
av_cold void ff_cbs_fragment_free(CodedBitstreamFragment *frag)
Free the units array of a fragment in addition to what ff_cbs_fragment_reset does.
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...
CodedBitstreamContext * cbc
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...
Context structure for coded bitstream operations.
CodedBitstreamUnitType type
Codec-specific type of this unit.
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
const char * remove_types
The bitstream filter state.
av_cold void ff_cbs_close(CodedBitstreamContext **ctx_ptr)
Close a context and free all internal state.
int ff_cbs_write_extradata(CodedBitstreamContext *ctx, AVCodecParameters *par, CodedBitstreamFragment *frag)
Write the bitstream of a fragment to the extradata in codec parameters.
AVCodecParameters * par_out
Parameters of the output stream.
CodedBitstreamUnit * units
Pointer to an array of units of length nb_units_allocated.
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Coded bitstream fragment structure, combining one or more units.
int ff_cbs_write_packet(CodedBitstreamContext *ctx, AVPacket *pkt, CodedBitstreamFragment *frag)
Write the bitstream of a fragment to a packet.
const FFBitStreamFilter ff_filter_units_bsf
enum FilterUnitsContext::@58 mode
static const AVOption filter_units_options[]
#define LIBAVUTIL_VERSION_INT
static int filter_units_make_type_list(const char *list_string, CodedBitstreamUnitType **type_list, int *nb_types)
Describe the class of an AVClass context structure.
CodedBitstreamUnitType * type_list
enum AVCodecID ff_cbs_all_codec_ids[]
Table of all supported codec IDs.
const char * av_default_item_name(void *ptr)
Return the context name.
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
AVBitStreamFilter p
The public AVBitStreamFilter.
static const AVClass filter_units_class
#define i(width, name, range_min, range_max)
#define av_malloc_array(a, b)
it s the only field you need to keep assuming you have a context There is some magic you don t need to care about around this just let it vf default value
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.
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.
av_cold int ff_cbs_init(CodedBitstreamContext **ctx_ptr, enum AVCodecID codec_id, void *log_ctx)
Create and initialise a new context for the given codec.
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
This structure stores compressed data.
static int filter_units_init(AVBSFContext *bsf)
int ff_bsf_get_packet_ref(AVBSFContext *ctx, AVPacket *pkt)
Called by bitstream filters to get packet for filtering.
CodedBitstreamFragment fragment
int nb_units
Number of units in this fragment.
void ff_cbs_delete_unit(CodedBitstreamFragment *frag, int position)
Delete a unit from a fragment and free all memory it uses.