51 typedef struct svq1_pmv_s {
71 0x00, 0xD5, 0x7F, 0xAA, 0xFE, 0x2B, 0x81, 0x54,
72 0x29, 0xFC, 0x56, 0x83, 0xD7, 0x02, 0xA8, 0x7D,
73 0x52, 0x87, 0x2D, 0xF8, 0xAC, 0x79, 0xD3, 0x06,
74 0x7B, 0xAE, 0x04, 0xD1, 0x85, 0x50, 0xFA, 0x2F,
75 0xA4, 0x71, 0xDB, 0x0E, 0x5A, 0x8F, 0x25, 0xF0,
76 0x8D, 0x58, 0xF2, 0x27, 0x73, 0xA6, 0x0C, 0xD9,
77 0xF6, 0x23, 0x89, 0x5C, 0x08, 0xDD, 0x77, 0xA2,
78 0xDF, 0x0A, 0xA0, 0x75, 0x21, 0xF4, 0x5E, 0x8B,
79 0x9D, 0x48, 0xE2, 0x37, 0x63, 0xB6, 0x1C, 0xC9,
80 0xB4, 0x61, 0xCB, 0x1E, 0x4A, 0x9F, 0x35, 0xE0,
81 0xCF, 0x1A, 0xB0, 0x65, 0x31, 0xE4, 0x4E, 0x9B,
82 0xE6, 0x33, 0x99, 0x4C, 0x18, 0xCD, 0x67, 0xB2,
83 0x39, 0xEC, 0x46, 0x93, 0xC7, 0x12, 0xB8, 0x6D,
84 0x10, 0xC5, 0x6F, 0xBA, 0xEE, 0x3B, 0x91, 0x44,
85 0x6B, 0xBE, 0x14, 0xC1, 0x95, 0x40, 0xEA, 0x3F,
86 0x42, 0x97, 0x3D, 0xE8, 0xBC, 0x69, 0xC3, 0x16,
87 0xEF, 0x3A, 0x90, 0x45, 0x11, 0xC4, 0x6E, 0xBB,
88 0xC6, 0x13, 0xB9, 0x6C, 0x38, 0xED, 0x47, 0x92,
89 0xBD, 0x68, 0xC2, 0x17, 0x43, 0x96, 0x3C, 0xE9,
90 0x94, 0x41, 0xEB, 0x3E, 0x6A, 0xBF, 0x15, 0xC0,
91 0x4B, 0x9E, 0x34, 0xE1, 0xB5, 0x60, 0xCA, 0x1F,
92 0x62, 0xB7, 0x1D, 0xC8, 0x9C, 0x49, 0xE3, 0x36,
93 0x19, 0xCC, 0x66, 0xB3, 0xE7, 0x32, 0x98, 0x4D,
94 0x30, 0xE5, 0x4F, 0x9A, 0xCE, 0x1B, 0xB1, 0x64,
95 0x72, 0xA7, 0x0D, 0xD8, 0x8C, 0x59, 0xF3, 0x26,
96 0x5B, 0x8E, 0x24, 0xF1, 0xA5, 0x70, 0xDA, 0x0F,
97 0x20, 0xF5, 0x5F, 0x8A, 0xDE, 0x0B, 0xA1, 0x74,
98 0x09, 0xDC, 0x76, 0xA3, 0xF7, 0x22, 0x88, 0x5D,
99 0xD6, 0x03, 0xA9, 0x7C, 0x28, 0xFD, 0x57, 0x82,
100 0xFF, 0x2A, 0x80, 0x55, 0x01, 0xD4, 0x7E, 0xAB,
101 0x84, 0x51, 0xFB, 0x2E, 0x7A, 0xAF, 0x05, 0xD0,
102 0xAD, 0x78, 0xD2, 0x07, 0x53, 0x86, 0x2C, 0xF9
105 #define SVQ1_PROCESS_VECTOR() \
106 for (; level > 0; i++) { \
114 if (!get_bits1(bitbuf)) \
117 list[n++] = list[i]; \
118 list[n++] = list[i] + (((level & 1) ? pitch : 1) << ((level >> 1) + 1));\
121 #define SVQ1_ADD_CODEBOOK() \
123 for (j = 0; j < stages; j++) { \
124 n3 = codebook[entries[j]] ^ 0x80808080; \
125 n1 += (n3 & 0xFF00FF00) >> 8; \
126 n2 += n3 & 0x00FF00FF; \
130 if (n1 & 0xFF00FF00) { \
131 n3 = (n1 >> 15 & 0x00010001 | 0x01000100) - 0x00010001; \
133 n1 |= (~n1 >> 15 & 0x00010001 | 0x01000100) - 0x00010001; \
134 n1 &= n3 & 0x00FF00FF; \
137 if (n2 & 0xFF00FF00) { \
138 n3 = (n2 >> 15 & 0x00010001 | 0x01000100) - 0x00010001; \
140 n2 |= (~n2 >> 15 & 0x00010001 | 0x01000100) - 0x00010001; \
141 n2 &= n3 & 0x00FF00FF; \
144 #define SVQ1_CALC_CODEBOOK_ENTRIES(cbook) \
145 codebook = (const uint32_t *)cbook[level]; \
147 bit_cache = get_bits(bitbuf, 4 * stages); \
149 for (j = 0; j < stages; j++) { \
150 entries[j] = (((bit_cache >> (4 * (stages - j - 1))) & 0xF) + \
151 16 * j) << (level + 1); \
153 mean -= stages * 128; \
154 n4 = (mean << 16) + mean;
162 const uint32_t *codebook;
168 uint32_t n1, n2, n3, n4;
174 for (i = 0, m = 1, n = 1, level = 5; i <
n; i++) {
178 dst = (uint32_t *)list[i];
179 width = 1 << ((4 +
level) / 2);
180 height = 1 << ((3 +
level) / 2);
183 stages =
get_vlc2(bitbuf, svq1_intra_multistage[level].
table, 3, 3) - 1;
186 for (y = 0; y <
height; y++)
187 memset(&dst[y * (pitch / 4)], 0, width);
191 if ((stages > 0 && level >= 4)) {
193 "Error (svq1_decode_block_intra): invalid vector: stages=%i level=%i\n",
202 for (y = 0; y <
height; y++)
203 memset(&dst[y * (pitch / 4)], mean, width);
207 for (y = 0; y <
height; y++) {
208 for (x = 0; x < width / 4; x++, codebook++) {
213 dst[x] = n1 << 8 | n2;
229 const uint32_t *codebook;
235 uint32_t n1, n2, n3, n4;
241 for (i = 0, m = 1, n = 1, level = 5; i <
n; i++) {
245 dst = (uint32_t *)list[i];
246 width = 1 << ((4 +
level) / 2);
247 height = 1 << ((3 +
level) / 2);
250 stages =
get_vlc2(bitbuf, svq1_inter_multistage[level].
table, 3, 2) - 1;
255 if ((stages > 0 && level >= 4)) {
257 "Error (svq1_decode_block_non_intra): invalid vector: stages=%i level=%i\n",
267 for (y = 0; y <
height; y++) {
268 for (x = 0; x < width / 4; x++, codebook++) {
271 n1 = n4 + ((n3 & 0xFF00FF00) >> 8);
272 n2 = n4 + (n3 & 0x00FF00FF);
275 dst[x] = n1 << 8 | n2;
289 for (i = 0; i < 2; i++) {
310 int pitch,
int x,
int y)
316 src = &previous[x + y * pitch];
319 for (i = 0; i < 16; i++) {
320 memcpy(dst, src, 16);
328 int pitch,
svq1_pmv *motion,
int x,
int y,
343 pmv[1] = &motion[x / 8 + 2];
344 pmv[2] = &motion[x / 8 + 4];
352 motion[x / 8 + 2].
x =
353 motion[x / 8 + 3].
x = mv.
x;
355 motion[x / 8 + 2].
y =
356 motion[x / 8 + 3].
y = mv.
y;
358 mv.
x = av_clip(mv.
x, -2 * x, 2 * (width - x - 16));
359 mv.
y = av_clip(mv.
y, -2 * y, 2 * (height - y - 16));
361 src = &previous[(x + (mv.
x >> 1)) + (y + (mv.
y >> 1)) * pitch];
371 int pitch,
svq1_pmv *motion,
int x,
int y,
386 pmv[1] = &motion[(x / 8) + 2];
387 pmv[2] = &motion[(x / 8) + 4];
400 pmv[1] = &motion[(x / 8) + 3];
408 pmv[2] = &motion[(x / 8) + 1];
415 pmv[2] = &motion[(x / 8) + 2];
416 pmv[3] = &motion[(x / 8) + 3];
423 for (i = 0; i < 4; i++) {
424 int mvx = pmv[i]->x + (i & 1) * 16;
425 int mvy = pmv[i]->y + (i >> 1) * 16;
428 mvx = av_clip(mvx, -2 * x, 2 * (width - x - 8));
429 mvy = av_clip(mvy, -2 * y, 2 * (height - y - 8));
431 src = &previous[(x + (mvx >> 1)) + (y + (mvy >> 1)) * pitch];
434 hdsp->
put_pixels_tab[1][((mvy & 1) << 1) | (mvx & 1)](dst, src, pitch, 8);
438 current += 8 * (pitch - 1);
449 int pitch,
svq1_pmv *motion,
int x,
int y,
462 motion[x / 8 + 2].
x =
463 motion[x / 8 + 2].
y =
464 motion[x / 8 + 3].
x =
465 motion[x / 8 + 3].
y = 0;
468 switch (block_type) {
475 pitch, motion, x, y, width, height);
478 ff_dlog(avctx,
"Error in svq1_motion_inter_block %i\n", result);
486 pitch, motion, x, y, width, height);
489 ff_dlog(avctx,
"Error in svq1_motion_inter_4v_block %i\n", result);
511 for (i = 1; i <= out[0]; i++) {
553 ff_dlog(avctx,
"%s checksum (%02x) for packet data\n",
554 (csum == 0) ?
"correct" :
"incorrect", csum);
563 "embedded message:\n%s\n", ((
char *)msg) + 1);
571 frame_size_code =
get_bits(bitbuf, 3);
573 if (frame_size_code == 7) {
578 if (!width || !height)
615 int buf_size = avpkt->
size;
635 if (buf_size < 9 * 4) {
653 for (i = 0; i < 4; i++)
654 src[i] = ((src[i] << 16) | (src[i] >> 16)) ^ src[7 - i];
659 ff_dlog(avctx,
"Error in svq1_decode_frame_header %i\n", result);
682 for (i = 0; i < 3; i++) {
694 current = cur->
data[i];
698 for (y = 0; y <
height; y += 16) {
699 for (x = 0; x <
width; x += 16) {
704 "Error in svq1_decode_block %i (keyframe)\n",
709 current += 16 * linesize;
721 memset(pmv, 0, ((width / 8) + 3) *
sizeof(
svq1_pmv));
723 for (y = 0; y <
height; y += 16) {
724 for (x = 0; x <
width; x += 16) {
728 pmv, x, y, width, height);
731 "Error in svq1_decode_delta_block %i\n",
740 current += 16 * linesize;
784 for (i = 0; i < 6; i++) {
785 static const uint8_t sizes[2][6] = { { 14, 10, 14, 18, 16, 18 },
786 { 10, 10, 14, 14, 14, 16 } };
790 offset += sizes[0][i];
791 init_vlc(&svq1_intra_multistage[i], 3, 8,
797 offset += sizes[1][i];
798 init_vlc(&svq1_inter_multistage[i], 3, 8,
discard all frames except keyframes
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
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
ptrdiff_t const GLvoid * data
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)
int ff_set_dimensions(AVCodecContext *s, int width, int height)
Check that the provided frame dimensions are valid and set them on the codec context.
static av_cold int init(AVCodecContext *avctx)
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
void av_fast_padded_malloc(void *ptr, unsigned int *size, size_t min_size)
Same behaviour av_fast_malloc but the buffer has additional FF_INPUT_BUFFER_PADDING_SIZE at the end w...
enum AVDiscard skip_frame
Skip decoding for selected frames.
const uint16_t ff_svq1_frame_size_table[7][2]
#define av_assert0(cond)
assert() equivalent, that is always enabled.
static av_cold int svq1_decode_end(AVCodecContext *avctx)
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
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]
int av_frame_ref(AVFrame *dst, const AVFrame *src)
Set up a new reference to the data described by the source 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.
static const int sizes[][2]
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
static const struct endianess table[]
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
#define SVQ1_CALC_CODEBOOK_ENTRIES(cbook)
const char * name
Name of the codec implementation.
static const uint8_t offset[127][2]
static void svq1_skip_block(uint8_t *current, uint8_t *previous, int pitch, int x, int y)
Libavcodec external API header.
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.
static int svq1_decode_block_intra(GetBitContext *bitbuf, uint8_t *pixels, int pitch)
const uint8_t ff_svq1_block_type_vlc[4][2]
int width
picture width / height.
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)
int pkt_swapped_allocated
static void svq1_parse_string(GetBitContext *bitbuf, uint8_t out[257])
#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.
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
static int init_get_bits8(GetBitContext *s, const uint8_t *buffer, int byte_size)
Initialize GetBitContext.
main external API structure.
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)
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
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)
static int init_get_bits(GetBitContext *s, const uint8_t *buffer, int bit_size)
Initialize GetBitContext.
static int svq1_decode_block_non_intra(GetBitContext *bitbuf, uint8_t *pixels, int pitch)
static av_const int sign_extend(int val, unsigned bits)
void av_frame_unref(AVFrame *frame)
Unreference all the buffers referenced by frame and reset the frame fields.
#define SVQ1_BLOCK_INTER_4V
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
static int decode(AVCodecContext *avctx, void *data, int *got_sub, AVPacket *avpkt)
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]
static av_always_inline int diff(const uint32_t a, const uint32_t b)
#define SVQ1_PROCESS_VECTOR()
VLC_TYPE(* table)[2]
code, bits
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){if(!*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));if(!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=ff_sample_fmt_is_planar(in_fmt, channels);out_planar=ff_sample_fmt_is_planar(out_fmt, channels);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);if(ARCH_AARCH64) ff_audio_convert_init_aarch64(ac);if(ARCH_ARM) ff_audio_convert_init_arm(ac);if(ARCH_X86) 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_log(ac->avr, AV_LOG_TRACE,"%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
static av_cold int svq1_decode_init(AVCodecContext *avctx)
static int skip_1stop_8data_bits(GetBitContext *gb)
static VLC svq1_block_type
AVPixelFormat
Pixel format.
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.