77 #define QUALITY_THRESHOLD 100 78 #define THRESHOLD_MULTIPLIER 0.6 86 score += (pix1[
i] - pix2[
i]) * (pix1[
i] - pix2[
i]);
92 int threshold,
int lambda,
int intra)
94 int count, y, x,
i, j,
split, best_mean, best_score, best_count;
96 int block_sum[7] = { 0, 0, 0, 0, 0, 0 };
97 int w = 2 << (level + 2 >> 1);
98 int h = 2 << (level + 1 >> 1);
101 const int8_t *codebook_sum, *codebook;
102 const uint16_t(*mean_vlc)[2];
103 const uint8_t(*multistage_vlc)[2];
114 for (y = 0; y <
h; y++) {
115 for (x = 0; x <
w; x++) {
116 int v = src[x + y *
stride];
117 block[0][x + w * y] = v;
128 for (y = 0; y <
h; y++) {
129 for (x = 0; x <
w; x++) {
131 block[0][x + w * y] = v;
139 best_score -= (
int)((
unsigned)block_sum[0] * block_sum[0] >> (level + 3));
140 best_mean = block_sum[0] + (size >> 1) >> (level + 3);
143 for (count = 1; count < 7; count++) {
144 int best_vector_score = INT_MAX;
145 int best_vector_sum = -999, best_vector_mean = -999;
146 const int stage = count - 1;
147 const int8_t *vector;
149 for (i = 0; i < 16; i++) {
150 int sum = codebook_sum[stage * 16 +
i];
151 int sqr,
diff, score;
153 vector = codebook + stage * size * 16 + i *
size;
155 diff = block_sum[stage] - sum;
156 score = sqr - (diff * (
int64_t)diff >> (level + 3));
157 if (score < best_vector_score) {
158 int mean = diff + (size >> 1) >> (level + 3);
160 mean = av_clip(mean, intra ? 0 : -256, 255);
161 best_vector_score = score;
162 best_vector[stage] =
i;
163 best_vector_sum = sum;
164 best_vector_mean = mean;
168 vector = codebook + stage * size * 16 + best_vector[stage] *
size;
169 for (j = 0; j <
size; j++)
170 block[stage + 1][j] =
block[stage][j] - vector[j];
171 block_sum[stage + 1] = block_sum[stage] - best_vector_sum;
172 best_vector_score += lambda *
174 multistage_vlc[1 + count][1]
175 + mean_vlc[best_vector_mean][1]);
177 if (best_vector_score < best_score) {
178 best_score = best_vector_score;
180 best_mean = best_vector_mean;
186 if (best_score > threshold && level) {
188 int offset = level & 1 ? stride * h / 2 : w / 2;
191 for (i = level - 1; i >= 0; i--)
193 score +=
encode_block(s, src, ref, decoded, stride, level - 1,
194 threshold >> 1, lambda, intra);
195 score +=
encode_block(s, src + offset, ref + offset, decoded + offset,
196 stride, level - 1, threshold >> 1, lambda, intra);
199 if (score < best_score) {
203 for (i = level - 1; i >= 0; i--)
211 av_assert1(best_mean >= 0 && best_mean < 256 || !intra);
212 av_assert1(best_mean >= -256 && best_mean < 256);
213 av_assert1(best_count >= 0 && best_count < 7);
218 multistage_vlc[1 + best_count][1],
219 multistage_vlc[1 + best_count][0]);
221 mean_vlc[best_mean][0]);
223 for (i = 0; i < best_count; i++) {
224 av_assert2(best_vector[i] >= 0 && best_vector[i] < 16);
228 for (y = 0; y <
h; y++)
229 for (x = 0; x <
w; x++)
230 decoded[x + y * stride] = src[x + y * stride] -
231 block[best_count][x + w * y] +
248 unsigned char *src_plane,
249 unsigned char *ref_plane,
250 unsigned char *decoded_plane,
255 int block_width, block_height;
264 for (level = 4; level >= 0; level--)
267 block_width = (width + 15) / 16;
268 block_height = (height + 15) / 16;
301 block_height * 2 + 2) *
302 2 *
sizeof(int16_t));
304 (block_height + 2) + 1) *
305 2 *
sizeof(int16_t));
326 for (y = 0; y < block_height; y++) {
330 for (i = 0; i < 16 && i + 16 * y <
height; i++) {
331 memcpy(&src[i * stride], &src_plane[(i + 16 * y) * src_stride],
333 for (x = width; x < 16 * block_width; x++)
334 src[i * stride + x] = src[i * stride + x - 1];
336 for (; i < 16 && i + 16 * y < 16 * block_height; i++)
337 memcpy(&src[i * stride], &src[(i - 1) * stride],
340 for (x = 0; x < block_width; x++) {
355 for (y = 0; y < block_height; y++) {
356 for (i = 0; i < 16 && i + 16 * y <
height; i++) {
357 memcpy(&src[i * stride], &src_plane[(i + 16 * y) * src_stride],
359 for (x = width; x < 16 * block_width; x++)
360 src[i * stride + x] = src[i * stride + x - 1];
362 for (; i < 16 && i + 16 * y < 16 * block_height; i++)
363 memcpy(&src[i * stride], &src[(i - 1) * stride], 16 * block_width);
366 for (x = 0; x < block_width; x++) {
367 uint8_t reorder_buffer[2][6][7 * 32];
369 int offset = y * 16 * stride + x * 16;
372 int score[4] = { 0, 0, 0, 0 }, best;
387 for (i = 0; i < 6; i++)
393 score[0] = vlc[1] * lambda;
397 for (i = 0; i < 6; i++) {
408 int mx, my, pred_x, pred_y, dxy;
414 for (i = 0; i < 6; i++)
432 dxy = (mx & 1) + 2 * (my & 1);
439 score[1] +=
encode_block(s, src + 16 * x, temp + 16*stride,
440 decoded, stride, 5, 64, lambda, 0);
441 best = score[1] <= score[0];
446 score[2] += vlc[1] * lambda;
447 if (score[2] < score[best] && mx == 0 && my == 0) {
455 for (i = 0; i < 6; i++) {
474 for (i = 5; i >= 0; i--)
505 for (i = 0; i < 3; i++) {
521 if (avctx->
width >= 4096 || avctx->
height >= 4096) {
583 const AVFrame *pict,
int *got_packet)
623 #if FF_API_CODED_FRAME 633 for (i = 0; i < 3; i++) {
645 for (j = 0; j <
i; j++) {
668 #define OFFSET(x) offsetof(struct SVQ1EncContext, x) 669 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM 692 .priv_class = &svq1enc_class,
uint8_t * scratchpad
data area for the ME algo, so that the ME does not need to malloc/free.
av_cold void ff_me_cmp_init(MECmpContext *c, AVCodecContext *avctx)
static const AVClass svq1enc_class
This structure describes decoded (raw) audio or video data.
int16_t(* p_mv_table)[2]
MV table (1MV per MB) P-frame encoding.
int ff_side_data_set_encoder_stats(AVPacket *pkt, int quality, int64_t *error, int error_count, int pict_type)
void ff_estimate_p_frame_motion(MpegEncContext *s, int mb_x, int mb_y)
uint8_t * mb_mean
Table for MB luminance.
#define THRESHOLD_MULTIPLIER
static void put_bits(Jpeg2000EncoderContext *s, int val, int n)
put n times val bit
#define LIBAVUTIL_VERSION_INT
void ff_h263_encode_init(MpegEncContext *s)
static av_cold int init(AVCodecContext *avctx)
uint16_t * mb_var
Table for MB variances.
AVFrame * current_picture
const char * av_default_item_name(void *ptr)
Return the context name.
void avpriv_copy_bits(PutBitContext *pb, const uint8_t *src, int length)
Copy the content of src to the bitstream.
static int svq1_encode_plane(SVQ1EncContext *s, int plane, unsigned char *src_plane, unsigned char *ref_plane, unsigned char *decoded_plane, int width, int height, int src_stride, int stride)
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
uint32_t * score_map
map to store the scores
int16_t * ff_h263_pred_motion(MpegEncContext *s, int block, int dir, int *px, int *py)
void ff_h263_encode_motion(PutBitContext *pb, int val, int f_code)
static const int8_t svq1_intra_codebook_sum[4][16 *6]
static void init_block_index(MpegEncContext *s)
const uint16_t ff_svq1_frame_size_table[7][2]
const char * class_name
The name of the class; usually it is the same name as the context structure type to which the AVClass...
#define CANDIDATE_MB_TYPE_INTER
#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.
static av_cold int svq1_encode_init(AVCodecContext *avctx)
av_cold void ff_mpegvideoencdsp_init(MpegvideoEncDSPContext *c, AVCodecContext *avctx)
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.
const int8_t *const ff_svq1_inter_codebooks[6]
int16_t encoded_block_levels[6][7][256]
enum AVPictureType pict_type
Picture current_picture
copy of the current picture structure.
int mb_height
number of MBs horizontally & vertically
#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 int ssd_int8_vs_int16_c(const int8_t *pix1, const int16_t *pix2, intptr_t size)
#define i(width, name, range_min, range_max)
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
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 AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
int flags
AV_CODEC_FLAG_*.
simple assert() macros that are a bit more flexible than ISO C assert().
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
MpegvideoEncDSPContext mpvencdsp
const char * name
Name of the codec implementation.
int16_t(*[3] motion_val16)[2]
uint16_t * mb_type
Table for candidate MB types for encoding (defines in mpegutils.h)
static const uint8_t offset[127][2]
void ff_mpv_common_end(MpegEncContext *s)
static int encode_block(SVQ1EncContext *s, uint8_t *src, uint8_t *ref, uint8_t *decoded, int stride, int level, int threshold, int lambda, int intra)
int flags
A combination of AV_PKT_FLAG values.
Sorenson Vector Quantizer #1 (SVQ1) video codec.
static int put_bits_count(PutBitContext *s)
static char * split(char *message, char delim)
av_cold void ff_hpeldsp_init(HpelDSPContext *c, int flags)
PutBitContext reorder_pb[6]
enum AVPictureType pict_type
Picture type of the frame.
#define av_assert1(cond)
assert() equivalent, that does not lie in speed critical code.
int(* ssd_int8_vs_int16)(const int8_t *pix1, const int16_t *pix2, intptr_t size)
Picture new_picture
copy of the source picture structure for encoding.
const uint8_t ff_svq1_block_type_vlc[4][2]
int width
picture width / height.
int16_t(*[2] motion_val)[2]
Picture * current_picture_ptr
pointer to the current picture
int quality
quality (between 1 (good) and FF_LAMBDA_MAX (bad))
#define FF_ARRAY_ELEMS(a)
const uint8_t ff_svq1_inter_multistage_vlc[6][8][2]
int block_index[6]
index to current MB in block based arrays with edges
static av_cold int svq1_encode_end(AVCodecContext *avctx)
int first_slice_line
used in MPEG-4 too to handle resync markers
uint16_t * mc_mb_var
Table for motion compensated MB variances.
int16_t(*[3] motion_val8)[2]
unsigned int lambda2
(lambda*lambda) >> FF_LAMBDA_SHIFT
Libavcodec external API header.
ptrdiff_t linesize
line size, in bytes, may be different from width
static void svq1_write_header(SVQ1EncContext *s, int frame_type)
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
av_cold void ff_svq1enc_init_ppc(SVQ1EncContext *c)
main external API structure.
int height
picture size. must be a multiple of 16
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.
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
Describe the class of an AVClass context structure.
int f_code
forward MV resolution
int pict_type
AV_PICTURE_TYPE_I, AV_PICTURE_TYPE_P, AV_PICTURE_TYPE_B, ...
static enum AVPixelFormat pix_fmts[]
int motion_est
ME algorithm.
void ff_svq1enc_init_x86(SVQ1EncContext *c)
int ff_init_me(MpegEncContext *s)
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
int b8_stride
2*mb_width+1 used for some 8x8 block arrays to allow simple addressing
struct AVCodecContext * avctx
int gop_size
the number of pictures in a group of pictures, or 0 for intra_only
PutBitContext pb
bit output
#define FF_DISABLE_DEPRECATION_WARNINGS
const int8_t *const ff_svq1_intra_codebooks[6]
common internal api header.
int mb_stride
mb_width+1 used for some arrays to allow simple addressing of left & top MBs without sig11 ...
static void flush_put_bits(PutBitContext *s)
Pad the end of the output stream with zeros.
static int ref[MAX_W *MAX_W]
const uint8_t ff_svq1_intra_multistage_vlc[6][8][2]
Picture last_picture
copy of the previous picture structure.
Picture * last_picture_ptr
pointer to the previous picture.
static const int8_t svq1_inter_codebook_sum[4][16 *6]
attribute_deprecated AVFrame * coded_frame
the picture in the bitstream
const uint16_t ff_svq1_inter_mean_vlc[512][2]
static void init_put_bits(PutBitContext *s, uint8_t *buffer, int buffer_size)
Initialize the PutBitContext s.
uint32_t * map
map to avoid duplicate evaluations
static const AVOption options[]
#define CANDIDATE_MB_TYPE_INTRA
av_cold int ff_mpv_common_init(MpegEncContext *s)
init common structure for both encoder and decoder.
static av_always_inline int diff(const uint32_t a, const uint32_t b)
int dia_size
ME diamond size & shape.
#define FF_ENABLE_DEPRECATION_WARNINGS
int key_frame
1 -> keyframe, 0-> not
void ff_fix_long_mvs(MpegEncContext *s, uint8_t *field_select_table, int field_select, int16_t(*mv_table)[2], int f_code, int type, int truncate)
static int svq1_encode_frame(AVCodecContext *avctx, AVPacket *pkt, const AVFrame *pict, int *got_packet)
int frame_number
Frame counter, set by libavcodec.
void ff_fix_long_p_mvs(MpegEncContext *s, int type)
uint32_t * mb_type
types and macros are defined in mpegutils.h
#define av_malloc_array(a, b)
#define FFSWAP(type, a, b)
#define QUALITY_THRESHOLD
AVPixelFormat
Pixel format.
This structure stores compressed data.
const uint16_t ff_svq1_intra_mean_vlc[256][2]
int ff_match_2uint16(const uint16_t(*tab)[2], int size, int a, int b)
Return the index into tab at which {a,b} match elements {[0],[1]} of tab.
unsigned int lambda
Lagrange multiplier used in rate distortion.