54 typedef struct svq1_pmv_s {
70 0x00, 0xD5, 0x7F, 0xAA, 0xFE, 0x2B, 0x81, 0x54,
71 0x29, 0xFC, 0x56, 0x83, 0xD7, 0x02, 0xA8, 0x7D,
72 0x52, 0x87, 0x2D, 0xF8, 0xAC, 0x79, 0xD3, 0x06,
73 0x7B, 0xAE, 0x04, 0xD1, 0x85, 0x50, 0xFA, 0x2F,
74 0xA4, 0x71, 0xDB, 0x0E, 0x5A, 0x8F, 0x25, 0xF0,
75 0x8D, 0x58, 0xF2, 0x27, 0x73, 0xA6, 0x0C, 0xD9,
76 0xF6, 0x23, 0x89, 0x5C, 0x08, 0xDD, 0x77, 0xA2,
77 0xDF, 0x0A, 0xA0, 0x75, 0x21, 0xF4, 0x5E, 0x8B,
78 0x9D, 0x48, 0xE2, 0x37, 0x63, 0xB6, 0x1C, 0xC9,
79 0xB4, 0x61, 0xCB, 0x1E, 0x4A, 0x9F, 0x35, 0xE0,
80 0xCF, 0x1A, 0xB0, 0x65, 0x31, 0xE4, 0x4E, 0x9B,
81 0xE6, 0x33, 0x99, 0x4C, 0x18, 0xCD, 0x67, 0xB2,
82 0x39, 0xEC, 0x46, 0x93, 0xC7, 0x12, 0xB8, 0x6D,
83 0x10, 0xC5, 0x6F, 0xBA, 0xEE, 0x3B, 0x91, 0x44,
84 0x6B, 0xBE, 0x14, 0xC1, 0x95, 0x40, 0xEA, 0x3F,
85 0x42, 0x97, 0x3D, 0xE8, 0xBC, 0x69, 0xC3, 0x16,
86 0xEF, 0x3A, 0x90, 0x45, 0x11, 0xC4, 0x6E, 0xBB,
87 0xC6, 0x13, 0xB9, 0x6C, 0x38, 0xED, 0x47, 0x92,
88 0xBD, 0x68, 0xC2, 0x17, 0x43, 0x96, 0x3C, 0xE9,
89 0x94, 0x41, 0xEB, 0x3E, 0x6A, 0xBF, 0x15, 0xC0,
90 0x4B, 0x9E, 0x34, 0xE1, 0xB5, 0x60, 0xCA, 0x1F,
91 0x62, 0xB7, 0x1D, 0xC8, 0x9C, 0x49, 0xE3, 0x36,
92 0x19, 0xCC, 0x66, 0xB3, 0xE7, 0x32, 0x98, 0x4D,
93 0x30, 0xE5, 0x4F, 0x9A, 0xCE, 0x1B, 0xB1, 0x64,
94 0x72, 0xA7, 0x0D, 0xD8, 0x8C, 0x59, 0xF3, 0x26,
95 0x5B, 0x8E, 0x24, 0xF1, 0xA5, 0x70, 0xDA, 0x0F,
96 0x20, 0xF5, 0x5F, 0x8A, 0xDE, 0x0B, 0xA1, 0x74,
97 0x09, 0xDC, 0x76, 0xA3, 0xF7, 0x22, 0x88, 0x5D,
98 0xD6, 0x03, 0xA9, 0x7C, 0x28, 0xFD, 0x57, 0x82,
99 0xFF, 0x2A, 0x80, 0x55, 0x01, 0xD4, 0x7E, 0xAB,
100 0x84, 0x51, 0xFB, 0x2E, 0x7A, 0xAF, 0x05, 0xD0,
101 0xAD, 0x78, 0xD2, 0x07, 0x53, 0x86, 0x2C, 0xF9
104 #define SVQ1_PROCESS_VECTOR() \
105 for (; level > 0; i++) { \
113 if (!get_bits1(bitbuf)) \
116 list[n++] = list[i]; \
117 list[n++] = list[i] + (((level & 1) ? pitch : 1) << ((level >> 1) + 1));\
120 #define SVQ1_ADD_CODEBOOK() \
122 for (j = 0; j < stages; j++) { \
123 n3 = codebook[entries[j]] ^ 0x80808080; \
124 n1 += (n3 & 0xFF00FF00) >> 8; \
125 n2 += n3 & 0x00FF00FF; \
129 if (n1 & 0xFF00FF00) { \
130 n3 = (n1 >> 15 & 0x00010001 | 0x01000100) - 0x00010001; \
132 n1 |= (~n1 >> 15 & 0x00010001 | 0x01000100) - 0x00010001; \
133 n1 &= n3 & 0x00FF00FF; \
136 if (n2 & 0xFF00FF00) { \
137 n3 = (n2 >> 15 & 0x00010001 | 0x01000100) - 0x00010001; \
139 n2 |= (~n2 >> 15 & 0x00010001 | 0x01000100) - 0x00010001; \
140 n2 &= n3 & 0x00FF00FF; \
143 #define SVQ1_CALC_CODEBOOK_ENTRIES(cbook) \
144 codebook = (const uint32_t *)cbook[level]; \
146 bit_cache = get_bits(bitbuf, 4 * stages); \
148 for (j = 0; j < stages; j++) { \
149 entries[j] = (((bit_cache >> (4 * (stages - j - 1))) & 0xF) + \
150 16 * j) << (level + 1); \
152 mean -= stages * 128; \
153 n4 = (mean << 16) + mean;
161 const uint32_t *codebook;
166 uint32_t n1, n2, n3, n4;
172 for (i = 0, m = 1, n = 1, level = 5; i <
n; i++) {
176 dst = (uint32_t *)list[i];
177 width = 1 << ((4 +
level) / 2);
178 height = 1 << ((3 +
level) / 2);
181 stages =
get_vlc2(bitbuf, svq1_intra_multistage[level].
table, 3, 3) - 1;
184 for (y = 0; y <
height; y++)
185 memset(&dst[y * (pitch / 4)], 0, width);
189 if (stages > 0 && level >= 4) {
191 "Error (svq1_decode_block_intra): invalid vector: stages=%i level=%i\n",
199 for (y = 0; y <
height; y++)
200 memset(&dst[y * (pitch / 4)], mean, width);
204 for (y = 0; y <
height; y++) {
205 for (x = 0; x < width / 4; x++, codebook++) {
210 dst[x] = n1 << 8 | n2;
226 const uint32_t *codebook;
231 uint32_t n1, n2, n3, n4;
237 for (i = 0, m = 1, n = 1, level = 5; i <
n; i++) {
241 dst = (uint32_t *)list[i];
242 width = 1 << ((4 +
level) / 2);
243 height = 1 << ((3 +
level) / 2);
246 stages =
get_vlc2(bitbuf, svq1_inter_multistage[level].
table, 3, 2) - 1;
251 if ((stages > 0) && (level >= 4)) {
253 "Error (svq1_decode_block_non_intra): invalid vector: stages=%i level=%i\n",
262 for (y = 0; y <
height; y++) {
263 for (x = 0; x < width / 4; x++, codebook++) {
266 n1 = n4 + ((n3 & 0xFF00FF00) >> 8);
267 n2 = n4 + (n3 & 0x00FF00FF);
270 dst[x] = n1 << 8 | n2;
284 for (i = 0; i < 2; i++) {
305 int pitch,
int x,
int y)
311 src = &previous[x + y * pitch];
314 for (i = 0; i < 16; i++) {
315 memcpy(dst, src, 16);
323 int pitch,
svq1_pmv *motion,
int x,
int y,
338 pmv[1] = &motion[x / 8 + 2];
339 pmv[2] = &motion[x / 8 + 4];
347 motion[x / 8 + 2].
x =
348 motion[x / 8 + 3].
x = mv.
x;
350 motion[x / 8 + 2].
y =
351 motion[x / 8 + 3].
y = mv.
y;
353 mv.
x = av_clip(mv.
x, -2 * x, 2 * (width - x - 16));
354 mv.
y = av_clip(mv.
y, -2 * y, 2 * (height - y - 16));
356 src = &previous[(x + (mv.
x >> 1)) + (y + (mv.
y >> 1)) * pitch];
366 int pitch,
svq1_pmv *motion,
int x,
int y,
381 pmv[1] = &motion[(x / 8) + 2];
382 pmv[2] = &motion[(x / 8) + 4];
395 pmv[1] = &motion[(x / 8) + 3];
403 pmv[2] = &motion[(x / 8) + 1];
410 pmv[2] = &motion[(x / 8) + 2];
411 pmv[3] = &motion[(x / 8) + 3];
418 for (i = 0; i < 4; i++) {
419 int mvx = pmv[i]->x + (i & 1) * 16;
420 int mvy = pmv[i]->y + (i >> 1) * 16;
423 mvx = av_clip(mvx, -2 * x, 2 * (width - x - 8));
424 mvy = av_clip(mvy, -2 * y, 2 * (height - y - 8));
426 src = &previous[(x + (mvx >> 1)) + (y + (mvy >> 1)) * pitch];
429 hdsp->
put_pixels_tab[1][((mvy & 1) << 1) | (mvx & 1)](dst, src, pitch, 8);
433 current += 8 * (pitch - 1);
444 int pitch,
svq1_pmv *motion,
int x,
int y,
457 motion[x / 8 + 2].
x =
458 motion[x / 8 + 2].
y =
459 motion[x / 8 + 3].
x =
460 motion[x / 8 + 3].
y = 0;
463 switch (block_type) {
470 pitch, motion, x, y, width, height);
473 av_dlog(avctx,
"Error in svq1_motion_inter_block %i\n", result);
481 pitch, motion, x, y, width, height);
484 av_dlog(avctx,
"Error in svq1_motion_inter_4v_block %i\n", result);
506 for (i = 1; i <= out[0]; i++) {
547 av_dlog(avctx,
"%s checksum (%02x) for packet data\n",
548 (csum == 0) ?
"correct" :
"incorrect", csum);
557 "embedded message:\n%s\n", (
char *)msg);
565 frame_size_code =
get_bits(bitbuf, 3);
567 if (frame_size_code == 7) {
572 if (!width || !height)
609 int buf_size = avpkt->
size;
627 uint32_t *
src = (uint32_t *)(buf + 4);
632 for (i = 0; i < 4; i++)
633 src[i] = ((src[i] << 16) | (src[i] >> 16)) ^ src[7 - i];
638 av_dlog(avctx,
"Error in svq1_decode_frame_header %i\n", result);
658 for (i = 0; i < 3; i++) {
670 current = cur->
data[i];
674 for (y = 0; y <
height; y += 16) {
675 for (x = 0; x <
width; x += 16) {
680 "Error in svq1_decode_block %i (keyframe)\n",
685 current += 16 * linesize;
697 memset(pmv, 0, ((width / 8) + 3) *
sizeof(
svq1_pmv));
699 for (y = 0; y <
height; y += 16) {
700 for (x = 0; x <
width; x += 16) {
704 pmv, x, y, width, height);
707 "Error in svq1_decode_delta_block %i\n",
716 current += 16 * linesize;
760 for (i = 0; i < 6; i++) {
761 static const uint8_t sizes[2][6] = { { 14, 10, 14, 18, 16, 18 },
762 { 10, 10, 14, 14, 14, 16 } };
766 offset += sizes[0][i];
767 init_vlc(&svq1_intra_multistage[i], 3, 8,
773 offset += sizes[1][i];
774 init_vlc(&svq1_inter_multistage[i], 3, 8,
discard all frames except keyframes
static VLC svq1_inter_multistage[6]
This structure describes decoded (raw) audio or video data.
static int svq1_motion_inter_4v_block(HpelDSPContext *hdsp, GetBitContext *bitbuf, uint8_t *current, uint8_t *previous, int pitch, svq1_pmv *motion, int x, int y, int width, int height)
static VLC svq1_motion_component
static unsigned int get_bits(GetBitContext *s, int n)
Read 1-25 bits.
uint16_t ff_svq1_packet_checksum(const uint8_t *data, const int length, int value)
static av_cold int init(AVCodecContext *avctx)
static struct endianess table[]
AVFrame * avcodec_alloc_frame(void)
Allocate an AVFrame and set its fields to default values.
void avcodec_set_dimensions(AVCodecContext *s, int width, int height)
void av_log(void *avcl, int level, const char *fmt,...) av_printf_format(3
Send the specified message to the log if the level is less than or equal to the current av_log_level...
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
av_dlog(ac->avr,"%d samples - audio_convert: %s to %s (%s)\n", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt), use_generic?ac->func_descr_generic:ac->func_descr)
enum AVDiscard skip_frame
Skip decoding for selected frames.
const uint16_t ff_svq1_frame_size_table[7][2]
static av_cold int svq1_decode_end(AVCodecContext *avctx)
static VLC svq1_intra_mean
const int8_t *const ff_svq1_inter_codebooks[6]
#define INIT_VLC_STATIC(vlc, bits, a, b, c, d, e, f, g, static_size)
static VLC svq1_intra_multistage[6]
const uint8_t ff_mvtab[33][2]
static const uint8_t offset[511][2]
const char * name
Name of the codec implementation.
int av_frame_ref(AVFrame *dst, AVFrame *src)
Setup a new reference to the data described by a given frame.
#define CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
bitstream reader API header.
#define SVQ1_ADD_CODEBOOK()
static int svq1_decode_frame_header(AVCodecContext *avctx, AVFrame *frame)
int width
width and height of the video frame
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
void av_free(void *ptr)
Free a memory block which has been allocated with av_malloc(z)() or av_realloc(). ...
static const int sizes[][2]
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
#define SVQ1_CALC_CODEBOOK_ENTRIES(cbook)
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
static void svq1_skip_block(uint8_t *current, uint8_t *previous, int pitch, int x, int y)
Libavcodec external API header.
AVPixelFormat
Pixel format.
Sorenson Vector Quantizer #1 (SVQ1) video codec.
av_cold void ff_hpeldsp_init(HpelDSPContext *c, int flags)
enum AVPictureType pict_type
Picture type of the frame.
void av_frame_unref(AVFrame *frame)
Unreference all the buffers referenced by frame and reset the frame fields.
static int svq1_decode_block_intra(GetBitContext *bitbuf, uint8_t *pixels, int pitch)
static void svq1_parse_string(GetBitContext *bitbuf, uint8_t *out)
const uint8_t ff_svq1_block_type_vlc[4][2]
int width
picture width / height.
void * av_malloc(size_t size) av_malloc_attrib 1(1)
Allocate a block of size bytes with alignment suitable for all memory accesses (including vectors if ...
static av_always_inline int get_vlc2(GetBitContext *s, VLC_TYPE(*table)[2], int bits, int max_depth)
Parse a vlc code.
static void svq1_flush(AVCodecContext *avctx)
#define INIT_VLC_USE_NEW_STATIC
const uint8_t ff_svq1_inter_multistage_vlc[6][8][2]
static void flush(AVCodecContext *avctx)
static int svq1_decode_delta_block(AVCodecContext *avctx, HpelDSPContext *hdsp, GetBitContext *bitbuf, uint8_t *current, uint8_t *previous, int pitch, svq1_pmv *motion, int x, int y, int width, int height)
static const int8_t mv[256][2]
#define AV_LOG_INFO
Standard information.
static int init_get_bits8(GetBitContext *s, const uint8_t *buffer, int byte_size)
Initialize GetBitContext.
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.
#define init_vlc(vlc, nb_bits, nb_codes,bits, bits_wrap, bits_size,codes, codes_wrap, codes_size,flags)
op_pixels_func put_pixels_tab[4][4]
Halfpel motion compensation with rounding (a+b+1)>>1.
static VLC svq1_inter_mean
static unsigned int get_bits1(GetBitContext *s)
BYTE int const BYTE int int int height
static void skip_bits1(GetBitContext *s)
static int svq1_motion_inter_block(HpelDSPContext *hdsp, GetBitContext *bitbuf, uint8_t *current, uint8_t *previous, int pitch, svq1_pmv *motion, int x, int y, int width, int height)
static void skip_bits(GetBitContext *s, int n)
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
static int svq1_decode_block_non_intra(GetBitContext *bitbuf, uint8_t *pixels, int pitch)
static av_const int sign_extend(int val, unsigned bits)
#define SVQ1_BLOCK_INTER_4V
discard all non reference
static int svq1_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
const int8_t *const ff_svq1_intra_codebooks[6]
common internal api header.
#define CODEC_FLAG_GRAY
Only decode/encode grayscale.
const uint8_t ff_svq1_intra_multistage_vlc[6][8][2]
static const uint8_t string_table[256]
static int svq1_decode_motion_vector(GetBitContext *bitbuf, svq1_pmv *mv, svq1_pmv **pmv)
const uint16_t ff_svq1_inter_mean_vlc[512][2]
#define SVQ1_PROCESS_VECTOR()
#define AVERROR_INVALIDDATA
uint8_t pi<< 24) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8, uint8_t,(*(constuint8_t *) pi-0x80)*(1.0f/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8, uint8_t,(*(constuint8_t *) pi-0x80)*(1.0/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16, int16_t,(*(constint16_t *) pi >>8)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16, int16_t,*(constint16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16, int16_t,*(constint16_t *) pi *(1.0/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32, int32_t,(*(constint32_t *) pi >>24)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32, int32_t,*(constint32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32, int32_t,*(constint32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, float, av_clip_uint8(lrintf(*(constfloat *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, float, av_clip_int16(lrintf(*(constfloat *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, float, av_clipl_int32(llrintf(*(constfloat *) pi *(1U<< 31)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, double, av_clip_uint8(lrint(*(constdouble *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, double, av_clip_int16(lrint(*(constdouble *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, double, av_clipl_int32(llrint(*(constdouble *) pi *(1U<< 31))))#defineSET_CONV_FUNC_GROUP(ofmt, ifmt) staticvoidset_generic_function(AudioConvert *ac){}voidff_audio_convert_free(AudioConvert **ac){return;ff_dither_free(&(*ac) ->dc);av_freep(ac);}AudioConvert *ff_audio_convert_alloc(AVAudioResampleContext *avr, enumAVSampleFormatout_fmt, enumAVSampleFormatin_fmt, intchannels, intsample_rate, intapply_map){AudioConvert *ac;intin_planar, out_planar;ac=av_mallocz(sizeof(*ac));returnNULL;ac->avr=avr;ac->out_fmt=out_fmt;ac->in_fmt=in_fmt;ac->channels=channels;ac->apply_map=apply_map;if(avr->dither_method!=AV_RESAMPLE_DITHER_NONE &&av_get_packed_sample_fmt(out_fmt)==AV_SAMPLE_FMT_S16 &&av_get_bytes_per_sample(in_fmt)>2){ac->dc=ff_dither_alloc(avr, out_fmt, in_fmt, channels, sample_rate, apply_map);if(!ac->dc){av_free(ac);returnNULL;}returnac;}in_planar=av_sample_fmt_is_planar(in_fmt);out_planar=av_sample_fmt_is_planar(out_fmt);if(in_planar==out_planar){ac->func_type=CONV_FUNC_TYPE_FLAT;ac->planes=in_planar?ac->channels:1;}elseif(in_planar) ac->func_type=CONV_FUNC_TYPE_INTERLEAVE;elseac->func_type=CONV_FUNC_TYPE_DEINTERLEAVE;set_generic_function(ac);ff_audio_convert_init_arm(ac);ff_audio_convert_init_x86(ac);returnac;}intff_audio_convert(AudioConvert *ac, AudioData *out, AudioData *in){intuse_generic=1;intlen=in->nb_samples;intp;if(ac->dc){av_dlog(ac->avr,"%dsamples-audio_convert:%sto%s(dithered)\n", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt));returnff_convert_dither(ac-> out
VLC_TYPE(* table)[2]
code, bits
static av_cold int svq1_decode_init(AVCodecContext *avctx)
static int decode(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
static VLC svq1_block_type
This structure stores compressed data.
const uint16_t ff_svq1_intra_mean_vlc[256][2]
#define AV_GET_BUFFER_FLAG_REF
The decoder will keep a reference to the frame and may reuse it later.
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)