306 #define TH_DECCTL_GET_PPLEVEL_MAX (1)
313 #define TH_DECCTL_SET_PPLEVEL (3)
327 #define TH_ENCCTL_SET_KEYFRAME_FREQUENCY_FORCE (4)
336 #define TH_DECCTL_SET_GRANPOS (5)
353 #define TH_ENCCTL_SET_QUANT_PARAMS (2)
382 #define TH_ENCCTL_SET_VP3_COMPATIBLE (10)
397 #define TH_ENCCTL_GET_SPLEVEL_MAX (12)
412 #define TH_ENCCTL_SET_SPLEVEL (14)
417 #define OC_EINVAL -10
418 #define OC_DISABLED -11
419 #define OC_BADHEADER -20
420 #define OC_NOTFORMAT -21
421 #define OC_VERSION -22
423 #define OC_BADPACKET -24
424 #define OC_NEWPACKET -25
425 #define OC_DUPFRAME 1
431 extern const char *theora_version_string(void);
733 char *tag,
char *value);
int theora_packet_iskeyframe(ogg_packet *op)
Report whether a theora packet is a keyframe or not.
int theora_control(theora_state *th, int req, void *buf, size_t buf_sz)
Encoder control function.
ogg_uint32_t fps_numerator
frame rate numerator
Definition: theora.h:213
int quality
Nominal quality setting, 0-63.
Definition: theora.h:219
void theora_comment_add_tag(theora_comment *tc, char *tag, char *value)
Add a comment to an initialized theora_comment structure.
double theora_granule_time(theora_state *th, ogg_int64_t granulepos)
Convert a granulepos to absolute time in seconds.
The colorspace is unknown or unspecified.
Definition: theora.h:165
int theora_encode_YUVin(theora_state *t, yuv_buffer *yuv)
Submit a YUV buffer to the theora encoder.
void theora_clear(theora_state *t)
Free all internal data associated with a theora_state handle.
int theora_encode_header(theora_state *t, ogg_packet *op)
Request a packet containing the initial header.
char * theora_comment_query(theora_comment *tc, char *tag, int count)
Look up a comment value by tag.
void theora_comment_clear(theora_comment *tc)
Clear an allocated theora_comment struct so that it can be freed.
theora_colorspace colorspace
colorspace
Definition: theora.h:217
theora_info * i
Definition: theora.h:248
void * internal_decode
Definition: theora.h:252
Codec internal state and context.
Definition: theora.h:247
unsigned char * y
Pointer to start of luminance data.
Definition: theora.h:155
int uv_width
Width of the Cb and Cr chroma planes.
Definition: theora.h:152
int quick_p
Quick encode/decode.
Definition: theora.h:220
ogg_int64_t theora_granule_frame(theora_state *th, ogg_int64_t granulepos)
Convert a granulepos to an absolute frame index, starting at 0.
void * internal_encode
Definition: theora.h:251
ogg_uint32_t fps_denominator
frame rate denominator
Definition: theora.h:214
This is the best option for 'NTSC' content.
Definition: theora.h:166
int theora_decode_YUVout(theora_state *th, yuv_buffer *yuv)
Output the next available frame of decoded YUV data.
unsigned char * u
Pointer to start of Cb data.
Definition: theora.h:156
ogg_int32_t noise_sensitivity
Definition: theora.h:238
ogg_uint32_t width
encoded frame width
Definition: theora.h:207
Chroma subsampling by 2 in each direction (4:2:0)
Definition: theora.h:179
int theora_decode_header(theora_info *ci, theora_comment *cc, ogg_packet *op)
Decode an Ogg packet, with the expectation that the packet contains an initial header, comment data or codebook tables.
ogg_uint32_t frame_height
display frame height
Definition: theora.h:210
int theora_packet_isheader(ogg_packet *op)
Report whether a theora packet is a header or not This function does no verification beyond checking ...
ogg_uint32_t aspect_denominator
pixel aspect ratio denominator
Definition: theora.h:216
ogg_uint32_t aspect_numerator
pixel aspect ratio numerator
Definition: theora.h:215
void theora_comment_add(theora_comment *tc, char *comment)
Add a comment to an initialized theora_comment structure.
int theora_encode_packetout(theora_state *t, int last_p, ogg_packet *op)
Request the next packet of encoded video.
Theora bitstream info.
Definition: theora.h:206
theora_colorspace
A Colorspace.
Definition: theora.h:164
ogg_uint32_t frame_width
display frame width
Definition: theora.h:209
int uv_height
Height of the chroma planes.
Definition: theora.h:153
int keyframe_auto_p
Definition: theora.h:231
int theora_encode_init(theora_state *th, theora_info *ti)
Initialize the theora encoder.
int theora_decode_init(theora_state *th, theora_info *c)
Initialize a theora_state handle for decoding.
ogg_uint32_t offset_y
vertical offset of the displayed frame
Definition: theora.h:212
theora_pixelformat
A Chroma subsampling.
Definition: theora.h:178
ogg_int32_t keyframe_auto_threshold
Definition: theora.h:236
No chroma subsampling at all (4:4:4)
Definition: theora.h:182
int theora_decode_packetin(theora_state *th, ogg_packet *op)
Input a packet containing encoded data into the theora decoder.
Reserved value.
Definition: theora.h:180
unsigned char * v
Pointer to start of Cr data.
Definition: theora.h:157
int y_height
Height of the luminance plane.
Definition: theora.h:149
int target_bitrate
nominal bitrate in bits per second
Definition: theora.h:218
int dropframes_p
Definition: theora.h:230
int theora_comment_query_count(theora_comment *tc, char *tag)
Look up the number of instances of a tag.
ogg_int64_t granulepos
Definition: theora.h:249
ogg_int32_t sharpness
Definition: theora.h:239
int y_width
Width of the Y' luminance plane.
Definition: theora.h:148
void theora_info_clear(theora_info *c)
Clear a theora_info structure.
void theora_info_init(theora_info *c)
Initialize a theora_info structure.
unsigned char version_subminor
Definition: theora.h:225
int uv_stride
Offset between successive chroma rows.
Definition: theora.h:154
unsigned char version_major
Definition: theora.h:223
struct theora_comment theora_comment
Comment header metadata.
void * codec_setup
Definition: theora.h:227
int theora_granule_shift(theora_info *ti)
Report the granulepos shift radix.
ogg_uint32_t theora_version_number(void)
Retrieve a 32-bit version number.
void theora_comment_init(theora_comment *tc)
Initialize an allocated theora_comment structure.
ogg_uint32_t keyframe_data_target_bitrate
Definition: theora.h:235
ogg_uint32_t offset_x
horizontal offset of the displayed frame
Definition: theora.h:211
ogg_uint32_t keyframe_mindistance
Definition: theora.h:237
int theora_encode_comment(theora_comment *tc, ogg_packet *op)
Request a comment header packet from provided metadata.
This marks the end of the defined colorspaces.
Definition: theora.h:168
ogg_uint32_t keyframe_frequency_force
Definition: theora.h:233
int theora_encode_tables(theora_state *t, ogg_packet *op)
Request a packet containing the codebook tables for the stream.
ogg_uint32_t height
encoded frame height
Definition: theora.h:208
theora_pixelformat pixelformat
chroma subsampling mode to expect
Definition: theora.h:241
unsigned char version_minor
Definition: theora.h:224
This is the best option for 'PAL' content.
Definition: theora.h:167
Horizonatal chroma subsampling by 2 (4:2:2)
Definition: theora.h:181
int y_stride
Offset in bytes between successive rows.
Definition: theora.h:150
ogg_uint32_t keyframe_frequency
Definition: theora.h:232
A YUV buffer for passing uncompressed frames to and from the codec.
Definition: theora.h:147