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) == 0) \ 117 list[n++] = list[i]; \ 118 list[n++] = list[i] + \ 119 (((level & 1) ? pitch : 1) << (level / 2 + 1)); \ 122 #define SVQ1_ADD_CODEBOOK() \ 124 for (j = 0; j < stages; j++) { \ 125 n3 = codebook[entries[j]] ^ 0x80808080; \ 126 n1 += (n3 & 0xFF00FF00) >> 8; \ 127 n2 += n3 & 0x00FF00FF; \ 131 if (n1 & 0xFF00FF00) { \ 132 n3 = (n1 >> 15 & 0x00010001 | 0x01000100) - 0x00010001; \ 134 n1 |= (~n1 >> 15 & 0x00010001 | 0x01000100) - 0x00010001; \ 135 n1 &= n3 & 0x00FF00FF; \ 138 if (n2 & 0xFF00FF00) { \ 139 n3 = (n2 >> 15 & 0x00010001 | 0x01000100) - 0x00010001; \ 141 n2 |= (~n2 >> 15 & 0x00010001 | 0x01000100) - 0x00010001; \ 142 n2 &= n3 & 0x00FF00FF; \ 145 #define SVQ1_CALC_CODEBOOK_ENTRIES(cbook) \ 146 codebook = (const uint32_t *)cbook[level]; \ 148 bit_cache = get_bits(bitbuf, 4 * stages); \ 150 for (j = 0; j < stages; j++) { \ 151 entries[j] = (((bit_cache >> (4 * (stages - j - 1))) & 0xF) + \ 152 16 * j) << (level + 1); \ 154 mean -= stages * 128; \ 155 n4 = mean + (mean >> 31) << 16 | (mean & 0xFFFF); 163 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) || stages < 0) {
193 "Error (svq1_decode_block_intra): invalid vector: stages=%i level=%i\n",
201 for (y = 0; y <
height; y++)
202 memset(&dst[y * (pitch / 4)], mean, width);
206 for (y = 0; y <
height; y++) {
207 for (x = 0; x < width / 4; x++, codebook++) {
212 dst[x] = n1 << 8 | n2;
228 const uint32_t *codebook;
233 uint32_t n1, n2, n3, n4;
239 for (i = 0, m = 1, n = 1, level = 5; i < n; i++) {
243 dst = (uint32_t *)list[i];
244 width = 1 << ((4 +
level) / 2);
245 height = 1 << ((3 +
level) / 2);
248 stages =
get_vlc2(bitbuf, svq1_inter_multistage[level].table, 3, 2) - 1;
253 if ((stages > 0 && level >= 4) || stages < 0) {
255 "Error (svq1_decode_block_non_intra): invalid vector: stages=%i level=%i\n",
264 for (y = 0; y <
height; y++) {
265 for (x = 0; x < width / 4; x++, codebook++) {
268 n1 = n4 + ((n3 & 0xFF00FF00) >> 8);
269 n2 = n4 + (n3 & 0x00FF00FF);
272 dst[x] = n1 << 8 | n2;
286 for (i = 0; i < 2; i++) {
307 int pitch,
int x,
int y)
313 src = &previous[x + y * pitch];
316 for (i = 0; i < 16; i++) {
317 memcpy(dst, src, 16);
325 int pitch,
svq1_pmv *motion,
int x,
int y,
340 pmv[1] = &motion[x / 8 + 2];
341 pmv[2] = &motion[x / 8 + 4];
350 motion[x / 8 + 2].
x =
351 motion[x / 8 + 3].
x = mv.
x;
353 motion[x / 8 + 2].
y =
354 motion[x / 8 + 3].
y = mv.
y;
356 mv.
x = av_clip(mv.
x, -2 * x, 2 * (width - x - 16));
357 mv.
y = av_clip(mv.
y, -2 * y, 2 * (height - y - 16));
359 src = &previous[(x + (mv.
x >> 1)) + (y + (mv.
y >> 1)) * pitch];
369 int pitch,
svq1_pmv *motion,
int x,
int y,
384 pmv[1] = &motion[(x / 8) + 2];
385 pmv[2] = &motion[(x / 8) + 4];
399 pmv[1] = &motion[(x / 8) + 3];
408 pmv[2] = &motion[(x / 8) + 1];
416 pmv[2] = &motion[(x / 8) + 2];
417 pmv[3] = &motion[(x / 8) + 3];
425 for (i = 0; i < 4; i++) {
426 int mvx = pmv[i]->x + (i & 1) * 16;
427 int mvy = pmv[i]->y + (i >> 1) * 16;
430 mvx = av_clip(mvx, -2 * x, 2 * (width - x - 8));
431 mvy = av_clip(mvy, -2 * y, 2 * (height - y - 8));
433 src = &previous[(x + (mvx >> 1)) + (y + (mvy >> 1)) * pitch];
436 hdsp->
put_pixels_tab[1][((mvy & 1) << 1) | (mvx & 1)](dst, src, pitch, 8);
440 current += 8 * (pitch - 1);
451 int pitch,
svq1_pmv *motion,
int x,
int y,
464 motion[x / 8 + 2].
x =
465 motion[x / 8 + 2].
y =
466 motion[x / 8 + 3].
x =
467 motion[x / 8 + 3].
y = 0;
470 switch (block_type) {
477 pitch, motion, x, y, width, height);
480 ff_dlog(avctx,
"Error in svq1_motion_inter_block %i\n", result);
488 pitch, motion, x, y, width, height);
491 ff_dlog(avctx,
"Error in svq1_motion_inter_4v_block %i\n", result);
513 for (i = 1; i <= out[0]; i++) {
552 ff_dlog(avctx,
"%s checksum (%02x) for packet data\n",
553 (csum == 0) ?
"correct" :
"incorrect", csum);
562 "embedded message: \"%s\"\n", (
char *)msg);
570 frame_size_code =
get_bits(bitbuf, 3);
572 if (frame_size_code == 7) {
612 int buf_size = avpkt->
size;
632 if (buf_size < 9 * 4) {
650 for (i = 0; i < 4; i++)
651 src[i] = ((src[i] << 16) | (src[i] >> 16)) ^ src[7 - i];
657 ff_dlog(avctx,
"Error in svq1_decode_frame_header %i\n", result);
680 for (i = 0; i < 3; i++) {
692 current = cur->
data[i];
696 for (y = 0; y <
height; y += 16) {
697 for (x = 0; x <
width; x += 16) {
702 "Error in svq1_decode_block %i (keyframe)\n",
707 current += 16 * linesize;
719 memset(pmv, 0, ((width / 8) + 3) *
sizeof(
svq1_pmv));
721 for (y = 0; y <
height; y += 16) {
722 for (x = 0; x <
width; x += 16) {
726 pmv, x, y, width, height);
729 "Error in svq1_decode_delta_block %i\n",
738 current += 16 * linesize;
782 for (i = 0; i < 6; i++) {
783 static const uint8_t sizes[2][6] = { { 14, 10, 14, 18, 16, 18 },
784 { 10, 10, 14, 14, 14, 16 } };
786 svq1_intra_multistage[i].
table = &table[offset];
788 offset += sizes[0][i];
789 init_vlc(&svq1_intra_multistage[i], 3, 8,
793 svq1_inter_multistage[i].
table = &table[offset];
795 offset += sizes[1][i];
796 init_vlc(&svq1_inter_multistage[i], 3, 8,
void * av_malloc(size_t size)
Allocate a block of size bytes with alignment suitable for all memory accesses (including vectors if ...
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
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.
#define INIT_VLC_STATIC(vlc, bits, a, b, c, d, e, f, g, static_size)
av_log(ac->avr, AV_LOG_TRACE, "%d samples - audio_convert: %s to %s (%s)\, 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 AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
void av_fast_padded_malloc(void *ptr, unsigned int *size, size_t min_size)
Allocate a buffer with padding, reusing the given one if large enough.
#define init_vlc(vlc, nb_bits, nb_codes, bits, bits_wrap, bits_size, codes, codes_wrap, codes_size, flags)
void av_freep(void *arg)
Free a memory block which has been allocated with av_malloc(z)() or av_realloc() and set the pointer ...
enum AVDiscard skip_frame
const uint16_t ff_svq1_frame_size_table[7][2]
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]
static VLC svq1_intra_multistage[6]
int av_frame_ref(AVFrame *dst, const AVFrame *src)
Set up a new reference to the data described by the source frame.
bitstream reader API header.
#define AV_CODEC_FLAG_GRAY
Only decode/encode grayscale.
#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]
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
#define SVQ1_CALC_CODEBOOK_ENTRIES(cbook)
int flags
AV_CODEC_FLAG_*.
const char * name
Name of the codec implementation.
static void svq1_skip_block(uint8_t *current, uint8_t *previous, int pitch, int x, int y)
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)
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.
static int decode(AVCodecContext *avctx, AVFrame *frame, int *got_frame, AVPacket *pkt)
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
const uint8_t ff_svq1_inter_multistage_vlc[6][8][2]
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.
Libavcodec external API header.
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
main external API structure.
int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
Get a buffer for a frame.
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)
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 enum AVPixelFormat pix_fmts[]
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.
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.
const uint8_t ff_svq1_intra_multistage_vlc[6][8][2]
static av_cold void flush(AVCodecContext *avctx)
Flush (reset) the frame ID after seeking.
#define INIT_VLC_USE_NEW_STATIC
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_cold int init(AVCodecParserContext *s)
#define SVQ1_PROCESS_VECTOR()
VLC_TYPE(* table)[2]
code, bits
static av_cold int svq1_decode_init(AVCodecContext *avctx)
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.
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
const uint8_t ff_mvtab[33][2]