64 #if CONFIG_SSA_DECODER 75 #if CONFIG_ASS_DECODER ptrdiff_t const GLvoid * data
Memory handling functions.
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
static av_cold int ass_decode_init(AVCodecContext *avctx)
uint8_t * extradata
some codecs need / can use extradata like Huffman tables.
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
const char * name
Name of the codec implementation.
common internal API header
static int ass_decode_frame(AVCodecContext *avctx, void *data, int *got_sub_ptr, AVPacket *avpkt)
char * av_strdup(const char *s)
Duplicate a string.
Libavcodec external API header.
main external API structure.
Formatted text, the ass field must be set by the decoder and is authoritative.
char * ass
0 terminated ASS/SSA compatible event line.
static float sub(float src0, float src1)
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.
uint8_t * subtitle_header
Header containing style information for text subtitles.