39 unsigned int index = level + 3;
51 unsigned int index = level + 31;
57 if (level < -128 || level > 127) {
59 level = av_clip_int8(level);
73 for (i = 0; i < 10; i++) {
77 if ((block[index + 0] = (block[index + 0] *
80 if ((block[index + 8] = (block[index + 8] *
83 if ((block[index + 1] = (block[index + 1] *
86 if ((block[index + 9] = (block[index + 9] *
91 for (; nc_count; nc_count--)
116 for (count = 63; count > 3; count--) {
128 for (i = 0; i <=
count; i++) {
132 if ((block[index + 0] = (block[index + 0] *
135 if ((block[index + 8] = (block[index + 8] *
138 if ((block[index + 1] = (block[index + 1] *
141 if ((block[index + 9] = (block[index + 9] *
164 #define MAX_MB_SIZE (30 * 16 * 16 * 3 / 2 / 8) 173 for (i = 0; i < 6; i++)
176 for (i = 0; i < 6; i++) {
190 uint8_t *ptr_y = frame->
data[0] + (mb_y * 16 * linesize) + mb_x * 16;
198 for (i = 0; i < 4; i++)
204 for (i = 4; i < 6; i++)
210 const AVFrame *pict,
int *got_packet)
237 for (i = 0; i<3; i++) {
264 for (mb_y = 0; mb_y < a->
mb_height2; mb_y++) {
265 for (mb_x = 0; mb_x < a->
mb_width2; mb_x++) {
273 for (mb_y = 0; mb_y < a->
mb_height2; mb_y++) {
281 for (mb_x = 0; mb_x < a->
mb_width; mb_x++) {
297 (uint32_t *) pkt->
data, size);
300 pkt->
size = size * 4;
330 for (i = 0; i < 64; i++) {
343 #if CONFIG_ASV1_ENCODER 358 #if CONFIG_ASV2_ENCODER static int encode_frame(AVCodecContext *avctx, AVPacket *pkt, const AVFrame *pict, int *got_packet)
This structure describes decoded (raw) audio or video data.
const uint8_t ff_asv_ac_ccp_tab[16][2]
void ff_fdct_ifast(int16_t *data)
static void put_sbits(PutBitContext *pb, int n, int32_t value)
static void put_bits(Jpeg2000EncoderContext *s, int val, int n)
put n times val bit
#define AV_LOG_WARNING
Something somehow does not look correct.
Memory handling functions.
static av_cold int init(AVCodecContext *avctx)
The reader does not expect b to be semantically here and if the code is changed by maybe adding a a division or other the signedness will almost certainly be mistaken To avoid this confusion a new type was SUINT is the C unsigned type but it holds a signed int to use the same example SUINT a
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
av_cold void ff_fdctdsp_init(FDCTDSPContext *c, AVCodecContext *avctx)
Macro definitions for various function/variable attributes.
#define av_assert0(cond)
assert() equivalent, that is always enabled.
int ff_alloc_packet2(AVCodecContext *avctx, AVPacket *avpkt, int64_t size, int64_t min_size)
Check AVPacket size and/or allocate data.
#define FF_CODEC_CAP_INIT_THREADSAFE
The codec does not modify any global variables in the init function, allowing to call the init functi...
The exact code depends on how similar the blocks are and how related they are to the block
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
#define av_assert2(cond)
assert() equivalent, that does lie in speed critical code.
void(* bswap_buf)(uint32_t *dst, const uint32_t *src, int w)
uint8_t * extradata
some codecs need / can use extradata like Huffman tables.
const uint8_t ff_asv_ccp_tab[17][2]
const uint16_t ff_aanscales[64]
const uint8_t ff_asv_dc_ccp_tab[8][2]
#define AV_CODEC_FLAG_GRAY
Only decode/encode grayscale.
#define AV_INPUT_BUFFER_MIN_SIZE
minimum encoding buffer size Used to avoid some checks during header writing.
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
static uint8_t * put_bits_ptr(PutBitContext *s)
Return the pointer to the byte where the bitstream writer will put the next bit.
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
av_cold void ff_asv_common_init(AVCodecContext *avctx)
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
int flags
AV_CODEC_FLAG_*.
static int encode_mb(ASV1Context *a, int16_t block[6][64])
const char * name
Name of the codec implementation.
av_cold void ff_pixblockdsp_init(PixblockDSPContext *c, AVCodecContext *avctx)
ASUS V1/V2 encoder/decoder common data.
int av_frame_copy(AVFrame *dst, const AVFrame *src)
Copy the frame data from src to dst.
int flags
A combination of AV_PKT_FLAG values.
static int put_bits_count(PutBitContext *s)
static void flush_put_bits_le(PutBitContext *s)
static void put_bits_le(PutBitContext *s, int n, BitBuf value)
these buffered frames must be flushed immediately if a new input produces new the filter must not call request_frame to get more It must just process the frame or queue it The task of requesting more frames is left to the filter s request_frame method or the application If a filter has several the filter must be ready for frames arriving randomly on any input any filter with several inputs will most likely require some kind of queuing mechanism It is perfectly acceptable to have a limited queue and to drop frames when the inputs are too unbalanced request_frame For filters that do not use the this method is called when a frame is wanted on an output For a it should directly call filter_frame on the corresponding output For a if there are queued frames already one of these frames should be pushed If the filter should request a frame on one of its repeatedly until at least one frame has been pushed Return or at least make progress towards producing a frame
static av_cold int encode_init(AVCodecContext *avctx)
void(* fdct)(int16_t *block)
static void asv1_encode_block(ASV1Context *a, int16_t block[64])
int format
format of the frame, -1 if unknown or unset Values correspond to enum AVPixelFormat for video frames...
Libavcodec external API header.
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
main external API structure.
static void asv1_put_level(PutBitContext *pb, int level)
static void dct_get(ASV1Context *a, const AVFrame *frame, int mb_x, int mb_y)
const uint16_t ff_mpeg1_default_intra_matrix[256]
const uint16_t ff_asv2_level_tab[63][2]
static enum AVPixelFormat pix_fmts[]
int av_frame_get_buffer(AVFrame *frame, int align)
Allocate new buffer(s) for audio or video data.
int global_quality
Global quality for codecs which cannot change it per frame.
void(* get_pixels)(int16_t *av_restrict block, const uint8_t *pixels, ptrdiff_t stride)
AAN (Arai, Agui and Nakajima) (I)DCT tables.
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
common internal api header.
static void flush_put_bits(PutBitContext *s)
Pad the end of the output stream with zeros.
static void asv2_encode_block(ASV1Context *a, int16_t block[64])
static void init_put_bits(PutBitContext *s, uint8_t *buffer, int buffer_size)
Initialize the PutBitContext s.
static void asv2_put_level(ASV1Context *a, PutBitContext *pb, int level)
const uint8_t ff_asv_scantab[64]
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
const uint8_t ff_asv_level_tab[7][2]
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_RL32
AVPixelFormat
Pixel format.
This structure stores compressed data.
#define AV_CEIL_RSHIFT(a, b)