33 #define AIC_HDR_SIZE 24
34 #define AIC_BAND_COEFFS (64 + 32 + 192 + 96)
49 8, 16, 19, 22, 22, 26, 26, 27,
50 16, 16, 22, 22, 26, 27, 27, 29,
51 19, 22, 26, 26, 27, 29, 29, 35,
52 22, 24, 27, 27, 29, 32, 34, 38,
53 26, 27, 29, 29, 32, 35, 38, 46,
54 27, 29, 34, 34, 35, 40, 46, 56,
55 29, 34, 34, 37, 40, 48, 56, 69,
56 34, 37, 38, 40, 48, 58, 69, 83,
60 0, 4, 1, 2, 5, 8, 12, 9,
61 6, 3, 7, 10, 13, 14, 11, 15,
62 47, 43, 46, 45, 42, 39, 35, 38,
63 41, 44, 40, 37, 34, 33, 36, 32,
64 16, 20, 17, 18, 21, 24, 28, 25,
65 22, 19, 23, 26, 29, 30, 27, 31,
66 63, 59, 62, 61, 58, 55, 51, 54,
67 57, 60, 56, 53, 50, 49, 52, 48,
71 64, 72, 65, 66, 73, 80, 88, 81,
72 74, 67, 75, 82, 89, 90, 83, 91,
73 0, 4, 1, 2, 5, 8, 12, 9,
74 6, 3, 7, 10, 13, 14, 11, 15,
75 16, 20, 17, 18, 21, 24, 28, 25,
76 22, 19, 23, 26, 29, 30, 27, 31,
77 155, 147, 154, 153, 146, 139, 131, 138,
78 145, 152, 144, 137, 130, 129, 136, 128,
79 47, 43, 46, 45, 42, 39, 35, 38,
80 41, 44, 40, 37, 34, 33, 36, 32,
81 63, 59, 62, 61, 58, 55, 51, 54,
82 57, 60, 56, 53, 50, 49, 52, 48,
83 96, 104, 97, 98, 105, 112, 120, 113,
84 106, 99, 107, 114, 121, 122, 115, 123,
85 68, 76, 69, 70, 77, 84, 92, 85,
86 78, 71, 79, 86, 93, 94, 87, 95,
87 100, 108, 101, 102, 109, 116, 124, 117,
88 110, 103, 111, 118, 125, 126, 119, 127,
89 187, 179, 186, 185, 178, 171, 163, 170,
90 177, 184, 176, 169, 162, 161, 168, 160,
91 159, 151, 158, 157, 150, 143, 135, 142,
92 149, 156, 148, 141, 134, 133, 140, 132,
93 191, 183, 190, 189, 182, 175, 167, 174,
94 181, 188, 180, 173, 166, 165, 172, 164,
98 0, 4, 1, 2, 5, 8, 12, 9,
99 6, 3, 7, 10, 13, 14, 11, 15,
100 31, 27, 30, 29, 26, 23, 19, 22,
101 25, 28, 24, 21, 18, 17, 20, 16,
102 32, 36, 33, 34, 37, 40, 44, 41,
103 38, 35, 39, 42, 45, 46, 43, 47,
104 63, 59, 62, 61, 58, 55, 51, 54,
105 57, 60, 56, 53, 50, 49, 52, 48,
109 16, 24, 17, 18, 25, 32, 40, 33,
110 26, 19, 27, 34, 41, 42, 35, 43,
111 0, 4, 1, 2, 5, 8, 12, 9,
112 6, 3, 7, 10, 13, 14, 11, 15,
113 20, 28, 21, 22, 29, 36, 44, 37,
114 30, 23, 31, 38, 45, 46, 39, 47,
115 95, 87, 94, 93, 86, 79, 71, 78,
116 85, 92, 84, 77, 70, 69, 76, 68,
117 63, 59, 62, 61, 58, 55, 51, 54,
118 57, 60, 56, 53, 50, 49, 52, 48,
119 91, 83, 90, 89, 82, 75, 67, 74,
120 81, 88, 80, 73, 66, 65, 72, 64,
121 112, 120, 113, 114, 121, 128, 136, 129,
122 122, 115, 123, 130, 137, 138, 131, 139,
123 96, 100, 97, 98, 101, 104, 108, 105,
124 102, 99, 103, 106, 109, 110, 107, 111,
125 116, 124, 117, 118, 125, 132, 140, 133,
126 126, 119, 127, 134, 141, 142, 135, 143,
127 191, 183, 190, 189, 182, 175, 167, 174,
128 181, 188, 180, 173, 166, 165, 172, 164,
129 159, 155, 158, 157, 154, 151, 147, 150,
130 153, 156, 152, 149, 146, 145, 148, 144,
131 187, 179, 186, 185, 178, 171, 163, 170,
132 177, 184, 176, 169, 162, 161, 168, 160,
173 if (frame_size > size) {
180 "Picture dimension changed: old: %d x %d, new: %d x %d\n",
184 ctx->
quant = src[15];
190 #define GET_CODE(val, type, add_bits) \
193 val = get_ue_golomb(gb); \
195 val = get_unary(gb, 1, 31); \
197 val = (val << add_bits) + get_bits(gb, add_bits); \
201 int band,
int slice_width,
int force_chroma)
203 int has_skips, coeff_type, coeff_bits, skip_type,
skip_bits;
216 for (mb = 0; mb < slice_width; mb++) {
219 GET_CODE(val, skip_type, skip_bits);
223 if (idx >= num_coeffs)
225 GET_CODE(val, coeff_type, coeff_bits);
227 if (val >= 0x10000 || val < 0)
229 dst[scan[idx]] = val;
230 }
while (idx < num_coeffs - 1);
234 for (mb = 0; mb < slice_width; mb++) {
235 for (idx = 0; idx < num_coeffs; idx++) {
236 GET_CODE(val, coeff_type, coeff_bits);
237 if (val >= 0x10000 || val < 0)
239 dst[scan[idx]] = val;
248 int16_t **base, int16_t **ext)
252 for (i = 0; i < 4; i++) {
253 for (j = 0; j < 4; j++)
254 dst[scan[i * 8 + j]] = (*base)[j];
255 for (j = 0; j < 4; j++)
256 dst[scan[i * 8 + j + 4]] = (*ext)[j];
261 for (j = 0; j < 8; j++)
262 dst[scan[i * 8 + j]] = (*ext)[j];
268 int16_t **base, int16_t **ext,
274 for (i = 0; i < 8; i++) {
275 for (j = 0; j < 4; j++)
276 dst[scan[i * 8 + j]] = (*base)[j];
277 for (j = 0; j < 4; j++)
278 dst[scan[i * 8 + j + 4]] = (*ext)[j];
283 for (i = 0; i < 64; i++)
284 dst[scan[i]] = (*ext)[i];
293 for (i = 0; i < 64; i++) {
294 int val = (uint16_t)block[i];
303 const uint8_t *src,
int src_size)
316 Y = ctx->
frame->
data[0] + mb_x * 16 + mb_y * 16 * ystride;
317 for (i = 0; i < 2; i++)
318 C[i] = ctx->
frame->
data[i + 1] + mb_x * 8
330 for (mb = 0; mb < slice_width; mb++) {
331 for (blk = 0; blk < 4; blk++) {
337 &base_y, &ext_y, blk);
342 dst = Y + (blk >> 1) * 8 * ystride + (blk & 1) * 8;
345 dst = Y + (blk & 1) * 8 + (blk >> 1) * ystride;
352 for (blk = 0; blk < 2; blk++) {
371 int buf_size = avpkt->
size;
383 if (buf_size < off) {
399 slice_size = bytestream2_get_le16(&gb) * 4;
400 if (slice_size + off > buf_size || !slice_size) {
406 buf + off, slice_size)) < 0)
430 for (i = 0; i < 64; i++)
439 for (i = 1; i < 32; i++) {
static const int aic_num_band_coeffs[NUM_BANDS]
int16_t * data_ptr[NUM_BANDS]
void * av_malloc(size_t size)
Allocate a block of size bytes with alignment suitable for all memory accesses (including vectors if ...
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
This structure describes decoded (raw) audio or video data.
static unsigned int get_bits(GetBitContext *s, int n)
Read 1-25 bits.
#define DECLARE_ALIGNED(n, t, v)
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
static av_always_inline void bytestream2_init(GetByteContext *g, const uint8_t *buf, int buf_size)
void av_freep(void *arg)
Free a memory block which has been allocated with av_malloc(z)() or av_realloc() and set the pointer ...
static int decode(MimicContext *ctx, int quality, int num_coeffs, int is_iframe)
static const uint8_t aic_c_scan[64]
#define CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
bitstream reader API header.
static const uint8_t * aic_scan[NUM_BANDS]
static void unquant_block(int16_t *block, int q)
static const uint8_t frame_size[4]
static av_cold int aic_decode_init(AVCodecContext *avctx)
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
static int aic_decode_header(AICContext *ctx, const uint8_t *src, int size)
static const uint8_t aic_y_scan[64]
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
static av_cold int aic_decode_close(AVCodecContext *avctx)
void av_log(void *avcl, int level, const char *fmt,...)
const char * name
Name of the codec implementation.
static int aic_decode_coeffs(GetBitContext *gb, int16_t *dst, int band, int slice_width, int force_chroma)
void(* put_signed_pixels_clamped)(const int16_t *block, uint8_t *pixels, int line_size)
static const uint8_t aic_c_ext_scan[192]
enum AVPictureType pict_type
Picture type of the frame.
int width
picture width / height.
static const uint8_t aic_quant_matrix[64]
uint8_t idct_permutation[64]
IDCT input permutation.
static const int aic_band_off[NUM_BANDS]
static int aic_decode_slice(AICContext *ctx, int mb_x, int mb_y, const uint8_t *src, int src_size)
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 close(AVCodecParserContext *s)
int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
Get a buffer for a frame.
static unsigned int get_bits1(GetBitContext *s)
static void skip_bits(GetBitContext *s, int n)
static int init_get_bits(GetBitContext *s, const uint8_t *buffer, int bit_size)
Initialize GetBitContext.
static void recombine_block(int16_t *dst, const uint8_t *scan, int16_t **base, int16_t **ext)
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 recombine_block_il(int16_t *dst, const uint8_t *scan, int16_t **base, int16_t **ext, int block_no)
static av_cold int init(AVCodecParserContext *s)
#define GET_CODE(val, type, add_bits)
av_cold void ff_init_scantable(uint8_t *permutation, ScanTable *st, const uint8_t *src_scantable)
av_cold void ff_idctdsp_init(IDCTDSPContext *c, AVCodecContext *avctx)
static int aic_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
int key_frame
1 -> keyframe, 0-> not
static const uint8_t aic_y_ext_scan[192]
This structure stores compressed data.
void(* idct)(int16_t *block)