mirror of https://git.videolan.org/git/ffmpeg.git
avcodec/clearvideo: Improve handling of VLC escape values
Both the motion vector as well as the bias VLCs have an escape code; for the motion vectors, this value depended on the specific VLC table, whereas all the bias VLCs used the same value; the escape value has not been inlined in the latter case. But for both kinds of VLCs there are lots of values that are unused for all the VLCs of each kind and each of these can be used as common escape value, thus allowing to inline the escape value. This commit implements this. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
This commit is contained in:
Andreas Rheinhardt
parent
1d3ec27bd5
commit
ef9652bab2
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@ -33,8 +33,6 @@
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#include "clearvideodata.h"
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typedef struct LevelCodes {
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uint16_t mv_esc;
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uint16_t bias_esc;
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VLC flags_cb;
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VLC mv_cb;
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VLC bias_cb;
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@ -371,7 +369,7 @@ static TileInfo* decode_tile_info(GetBitContext *gb, LevelCodes *lc, int level)
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if (lc[level].mv_cb.table) {
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uint16_t mv_code = get_vlc2(gb, lc[level].mv_cb.table, lc[level].mv_cb.bits, 3);
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if (mv_code != lc[level].mv_esc) {
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if (mv_code != MV_ESC) {
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mv.x = (int8_t)(mv_code & 0xff);
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mv.y = (int8_t)(mv_code >> 8);
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} else {
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@ -383,7 +381,7 @@ static TileInfo* decode_tile_info(GetBitContext *gb, LevelCodes *lc, int level)
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if (lc[level].bias_cb.table) {
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uint16_t bias_val = get_vlc2(gb, lc[level].bias_cb.table, lc[level].bias_cb.bits, 2);
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if (bias_val != lc[level].bias_esc) {
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if (bias_val != BIAS_ESC) {
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bias = (int16_t)(bias_val);
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} else {
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bias = get_sbits(gb, 16);
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@ -728,7 +726,6 @@ static av_cold int clv_decode_init(AVCodecContext *avctx)
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for (int i = 0, j = 0, k = 0;; i++) {
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if (0x36F & (1 << i)) {
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c->lev[i].mv_esc = clv_mv_escape[i];
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ret = build_vlc(&c->lev[i].mv_cb, clv_mv_len_counts[k], &mv_syms);
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if (ret < 0)
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return ret;
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@ -743,7 +740,6 @@ static av_cold int clv_decode_init(AVCodecContext *avctx)
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if (ret < 0)
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return ret;
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c->lev[i + 1].bias_esc = 0x100;
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ret = build_vlc(&c->lev[i + 1].bias_cb,
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clv_bias_len_counts[j], &bias_syms);
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if (ret < 0)
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@ -111,10 +111,6 @@ static const uint8_t clv_flags_syms[][16] = {
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{ 0, 8, 3, 4, 2, 1, 12, 5, 10, 7, 9, 6, 14, 11, 13, 15 } // V_1
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};
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static const uint16_t clv_mv_escape[] = {
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0x0909, 0x0A0A, 0x1010, 0x1313, 0, 0x0808, 0x0B0B, 0, 0x0808, 0x0B0B
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};
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static const uint8_t clv_mv_len_counts[][16] = {
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{ 1, 0, 0, 2, 2, 6, 13, 6, 14, 28, 38, 38, 58, 56, 20, 8 },
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{ 1, 0, 0, 2, 3, 4, 8, 10, 20, 30, 37, 63, 84, 68, 32, 0 },
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@ -126,9 +122,10 @@ static const uint8_t clv_mv_len_counts[][16] = {
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{ 1, 0, 0, 0, 4, 5, 14, 18, 20, 39, 6, 80, 75, 112, 36, 32 },
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};
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#define MV_ESC 0x13
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static const uint16_t clv_mv_syms[] = {
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/* Y_0 motion vectors - 290 entries */
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0x0000, 0x00FF, 0x0001, 0xFF00, 0x0100, 0x0002, 0x00FE, 0x0909, 0x00FD,
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0x0000, 0x00FF, 0x0001, 0xFF00, 0x0100, 0x0002, 0x00FE, MV_ESC, 0x00FD,
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0x0004, 0x00FC, 0x0003, 0x01FF, 0xFF01, 0x0101, 0xFFFF, 0xFE00, 0x0200,
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0x0005, 0x00FB, 0x00FA, 0x0006, 0x0007, 0x00F9, 0xFF02, 0x0102, 0xFFFE,
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0x01FE, 0xFD00, 0x0300, 0xFC00, 0x0400, 0x02FF, 0xFE01, 0x0201, 0xFEFF,
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@ -162,7 +159,7 @@ static const uint16_t clv_mv_syms[] = {
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0x08FA, 0xF806, 0xF8FA, 0x0804, 0x08FC, 0xF804, 0xF8FC, 0x0808, 0xF8F8,
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0x08F8, 0xF808,
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/* Y_1 motion vectors - 362 entries */
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0x0000, 0x00FF, 0x0001, 0xFF00, 0x0100, 0x0A0A, 0xFFFF, 0x01FF, 0xFF01,
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0x0000, 0x00FF, 0x0001, 0xFF00, 0x0100, MV_ESC, 0xFFFF, 0x01FF, 0xFF01,
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0x0101, 0x00FE, 0x0002, 0x0003, 0x00FD, 0x0004, 0x00FC, 0xFE00, 0x0200,
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0x0005, 0x00FB, 0x00FA, 0x0006, 0x0007, 0x00F9, 0xFFFE, 0x01FE, 0xFF02,
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0x0102, 0xFF03, 0x0103, 0xFFFD, 0x01FD, 0xFEFF, 0x02FF, 0xFE01, 0x0201,
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@ -205,7 +202,7 @@ static const uint16_t clv_mv_syms[] = {
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0x0907, 0xF707,
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/* Y_2 motion vectors - 962 entries */
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0x0000, 0x0001, 0x00FF, 0xFF00, 0x0100, 0x0002, 0x00FE, 0x0101, 0xFFFF,
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0x01FF, 0xFF01, 0x0003, 0x00FD, 0x0004, 0x00FC, 0x1010, 0x0005, 0x00FB,
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0x01FF, 0xFF01, 0x0003, 0x00FD, 0x0004, 0x00FC, MV_ESC, 0x0005, 0x00FB,
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0xFE00, 0x0200, 0xFF02, 0x0102, 0xFFFE, 0x01FE, 0x00FA, 0x0006, 0x00F9,
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0x0007, 0x0201, 0xFEFF, 0x02FF, 0xFE01, 0xFD00, 0x0300, 0xFF03, 0x0103,
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0xFFFD, 0x01FD, 0xFC00, 0x0400, 0x0008, 0x00F8, 0xFB00, 0x0500, 0x0009,
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@ -314,7 +311,7 @@ static const uint16_t clv_mv_syms[] = {
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/* Y_3 motion vectors - 1370 elements */
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0x0000, 0x00FF, 0x0001, 0xFF00, 0x0100, 0x00FE, 0x0002, 0xFFFF, 0x01FF,
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0xFF01, 0x0101, 0x00FD, 0x0003, 0x00FC, 0x0004, 0xFE00, 0x0200, 0x0005,
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0x00FB, 0x1313, 0xFFFE, 0x01FE, 0xFF02, 0x0102, 0x0006, 0x00FA, 0xFEFF,
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0x00FB, MV_ESC, 0xFFFE, 0x01FE, 0xFF02, 0x0102, 0x0006, 0x00FA, 0xFEFF,
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0x02FF, 0xFE01, 0x0201, 0xFD00, 0x0300, 0xFC00, 0x0400, 0x00F9, 0x0007,
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0xFFFD, 0x01FD, 0xFF03, 0x0103, 0x00F8, 0x0008, 0x00F7, 0x0009, 0x000A,
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0x00F6, 0xFEFE, 0x02FE, 0xFE02, 0x0202, 0xFFFC, 0x01FC, 0xFF04, 0x0104,
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@ -468,7 +465,7 @@ static const uint16_t clv_mv_syms[] = {
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/* U_1 motion vectors - 226 entries */
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0x0001, 0x00FF, 0x0000, 0x0002, 0x00FE, 0x00FD, 0x0003, 0xFF00, 0x0100,
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0xFE00, 0x0200, 0x0101, 0xFFFF, 0x01FF, 0xFF01, 0x00FB, 0x0005, 0xFD00,
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0x0300, 0xFC00, 0x0400, 0x0004, 0x00FC, 0x0808, 0x00FA, 0x0006, 0x0201,
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0x0300, 0xFC00, 0x0400, 0x0004, 0x00FC, MV_ESC, 0x00FA, 0x0006, 0x0201,
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0xFEFF, 0x02FF, 0xFE01, 0xFFFD, 0x01FD, 0xFF03, 0x0103, 0xFEFD, 0x02FD,
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0xFE03, 0x0203, 0xFF02, 0x0102, 0xFFFE, 0x01FE, 0xFB00, 0x0500, 0xFDFD,
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0x03FD, 0xFD03, 0x0303, 0xFF04, 0x0104, 0xFFFC, 0x01FC, 0xFE02, 0x0202,
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@ -494,7 +491,7 @@ static const uint16_t clv_mv_syms[] = {
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0x0707,
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/* U_2 motion vectors - 442 entries */
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0x0000, 0xFF00, 0x0100, 0x00FF, 0x0001, 0xFFFF, 0x01FF, 0xFF01, 0x0101,
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0x0B0B, 0x0002, 0x00FE, 0xFE00, 0x0200, 0x0003, 0x00FD, 0xFEFF, 0x02FF,
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MV_ESC, 0x0002, 0x00FE, 0xFE00, 0x0200, 0x0003, 0x00FD, 0xFEFF, 0x02FF,
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0xFE01, 0x0201, 0xFF02, 0x0102, 0xFFFE, 0x01FE, 0xFD00, 0x0300, 0x00FC,
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0x0005, 0xFDFF, 0x03FF, 0xFD01, 0x0301, 0xFF03, 0x0103, 0xFFFD, 0x01FD,
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0xFE02, 0x0202, 0xFEFE, 0x02FE, 0xFCFF, 0x04FF, 0xFC01, 0x0401, 0xFBFF,
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@ -546,7 +543,7 @@ static const uint16_t clv_mv_syms[] = {
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/* V_1 motion vectors - 226 entries */
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0x0001, 0x00FF, 0x0000, 0xFF00, 0x0100, 0x0002, 0x00FE, 0x00FD, 0x0003,
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0x0004, 0x00FC, 0x00FB, 0x0005, 0x0101, 0xFFFF, 0x01FF, 0xFF01, 0xFE00,
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0x0200, 0xFD00, 0x0300, 0x0808, 0xFF02, 0x0102, 0xFFFE, 0x01FE, 0xFC00,
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0x0200, 0xFD00, 0x0300, MV_ESC, 0xFF02, 0x0102, 0xFFFE, 0x01FE, 0xFC00,
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0x0400, 0x0201, 0xFEFF, 0x02FF, 0xFE01, 0xFFFD, 0x01FD, 0xFF03, 0x0103,
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0x00FA, 0x0006, 0xFE02, 0x0202, 0xFEFE, 0x02FE, 0xFD02, 0x0302, 0xFDFE,
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0x03FE, 0xFEFD, 0xFC02, 0x02FD, 0x0402, 0xFE03, 0xFCFE, 0x0203, 0x04FE,
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@ -572,7 +569,7 @@ static const uint16_t clv_mv_syms[] = {
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0x0707,
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/* V_2 motion vectors - 442 elements */
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0x0000, 0x00FF, 0x0001, 0xFF00, 0x0100, 0xFFFF, 0x01FF, 0xFF01, 0x0101,
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0x0B0B, 0xFE00, 0x0200, 0xFEFF, 0x02FF, 0xFE01, 0x0201, 0x0002, 0x00FE,
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MV_ESC, 0xFE00, 0x0200, 0xFEFF, 0x02FF, 0xFE01, 0x0201, 0x0002, 0x00FE,
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0x00FC, 0x0003, 0x0004, 0x00FD, 0x0005, 0x00FB, 0xFDFF, 0x03FF, 0xFD01,
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0x0301, 0xFFFC, 0x01FC, 0xFF03, 0x0103, 0xFF04, 0x0104, 0xFFFD, 0x01FD,
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0xFD00, 0x0300, 0xFF02, 0x0102, 0xFFFE, 0x01FE, 0xFC00, 0x0400, 0xFEFC,
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@ -633,12 +630,13 @@ static const uint8_t clv_bias_len_counts[][16] = {
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{ 1, 0, 2, 2, 2, 1, 3, 2, 4, 5, 1, 4, 10, 2, 3, 2 },
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};
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#define BIAS_ESC 1
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static const uint16_t clv_bias_syms[] = {
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/* Y_1 bias values - 78 entries */
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0x0000, 0xFFFC, 0x0004, 0xFFF8, 0x0008, 0xFFF4, 0x000C, 0xFFF0, 0x0010,
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0xFFEC, 0x0014, 0xFFE8, 0x0018, 0xFFE4, 0x001C, 0x0020, 0xFFE0, 0x0024,
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0xFFDC, 0x0028, 0xFFD8, 0x002C, 0xFFD4, 0x0030, 0xFFD0, 0xFFCC, 0x0034,
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0xFFC8, 0x0038, 0x0100, 0xFFC4, 0x003C, 0xFFC0, 0x0040, 0xFFBC, 0x0044,
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0xFFC8, 0x0038, BIAS_ESC, 0xFFC4, 0x003C, 0xFFC0, 0x0040, 0xFFBC, 0x0044,
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0xFFB8, 0x0048, 0xFFB4, 0x004C, 0xFFB0, 0x0050, 0xFFAC, 0x0054, 0xFFA8,
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0x0058, 0xFFA4, 0x005C, 0x0060, 0xFFA0, 0x0064, 0xFF9C, 0x0068, 0xFF98,
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0x006C, 0xFF94, 0x0070, 0xFF90, 0x0074, 0xFF8C, 0xFF88, 0x0078, 0x007C,
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@ -652,7 +650,7 @@ static const uint16_t clv_bias_syms[] = {
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0xFFB8, 0x004C, 0xFFB4, 0x0050, 0xFFB0, 0x0054, 0xFFAC, 0xFFA8, 0x0058,
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0x005C, 0xFFA4, 0x0060, 0xFFA0, 0x0064, 0xFF9C, 0xFF98, 0x0068, 0x006C,
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0xFF94, 0x0070, 0xFF90, 0x0074, 0xFF8C, 0xFF88, 0x0078, 0xFF84, 0x007C,
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0xFF80, 0x0080, 0xFF7C, 0x0084, 0x0100, 0xFF78, 0x0088, 0x008C, 0xFF74,
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0xFF80, 0x0080, 0xFF7C, 0x0084, BIAS_ESC, 0xFF78, 0x0088, 0x008C, 0xFF74,
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0x0090, 0xFF70, 0x0094, 0xFF6C, 0xFF64, 0x009C, 0xFF68, 0x0098, 0xFF60,
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0x00A0, 0xFF5C, 0x00A4, 0x00A8, 0xFF58, 0x00AC, 0xFF54, 0xFF50, 0x00B0,
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0x00B4, 0xFF4C, 0xFF48, 0x00B8, 0xFF44, 0x00BC, 0xFF40, 0x00C0,
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@ -666,33 +664,33 @@ static const uint16_t clv_bias_syms[] = {
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0xFF94, 0xFF90, 0x0070, 0xFF8C, 0x0074, 0x0078, 0xFF88, 0xFF84, 0x007C,
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0xFF80, 0x0080, 0x0084, 0xFF7C, 0x0088, 0xFF78, 0x008C, 0xFF74, 0xFF70,
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0x0090, 0x0094, 0xFF6C, 0x0098, 0xFF68, 0xFF64, 0x009C, 0xFF60, 0x00A0,
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0xFF5C, 0x00A4, 0x0100, 0xFF58, 0x00A8, 0x00AC, 0xFF54, 0xFF50, 0x00B0,
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0xFF5C, 0x00A4, BIAS_ESC, 0xFF58, 0x00A8, 0x00AC, 0xFF54, 0xFF50, 0x00B0,
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0xFF4C, 0x00B4, 0x00B8, 0xFF48,
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/* U_1 bias values - 42 entries */
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0x0000, 0xFFFC, 0x0004, 0xFFF8, 0x0008, 0xFFF4, 0x000C, 0xFFF0, 0x0010,
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0xFFEC, 0x0014, 0x0018, 0xFFE8, 0xFFE4, 0x001C, 0xFFE0, 0x0020, 0xFFDC,
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0x0024, 0xFFD8, 0x0028, 0x002C, 0xFFD4, 0x0030, 0xFFCC, 0xFFD0, 0x0034,
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0xFFC8, 0x0038, 0x003C, 0xFFC4, 0xFFC0, 0x0040, 0xFFBC, 0x0044, 0xFFB8,
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0x0048, 0xFFB4, 0x004C, 0x0050, 0xFFB0, 0x0100,
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0x0048, 0xFFB4, 0x004C, 0x0050, 0xFFB0, BIAS_ESC,
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/* U_2 bias values - 54 entries */
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0x0000, 0xFFFC, 0x0004, 0xFFF8, 0x0008, 0xFFF4, 0x000C, 0xFFF0, 0x0010,
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0x0014, 0xFFEC, 0x0018, 0xFFE8, 0x001C, 0xFFE4, 0x0020, 0xFFE0, 0xFFDC,
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0x0024, 0xFFD8, 0x0028, 0xFFD4, 0x002C, 0x0030, 0xFFD0, 0x0034, 0xFFCC,
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0x0038, 0xFFC8, 0x003C, 0xFFC4, 0x0040, 0xFFC0, 0xFFBC, 0x0044, 0xFFB4,
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0xFFB8, 0x0048, 0x004C, 0x0100, 0x0058, 0xFFB0, 0xFFA8, 0x0054, 0xFFAC,
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0xFFB8, 0x0048, 0x004C, BIAS_ESC, 0x0058, 0xFFB0, 0xFFA8, 0x0054, 0xFFAC,
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0x0050, 0xFF9C, 0x005C, 0xFFA0, 0x0068, 0xFF98, 0xFFA4, 0x0064, 0x0060,
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/* V_1 bias values - 42 entries */
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0x0000, 0xFFFC, 0x0004, 0xFFF8, 0x0008, 0xFFF4, 0x000C, 0xFFF0, 0x0010,
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0xFFEC, 0x0014, 0x0018, 0xFFE8, 0xFFE4, 0x001C, 0xFFE0, 0x0020, 0xFFDC,
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0x0024, 0xFFD8, 0x0028, 0x002C, 0xFFD4, 0x0030, 0xFFD0, 0xFFCC, 0x0034,
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0xFFC8, 0x0038, 0x003C, 0xFFC4, 0x0100, 0xFFC0, 0x0040, 0xFFBC, 0x0044,
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0xFFC8, 0x0038, 0x003C, 0xFFC4, BIAS_ESC, 0xFFC0, 0x0040, 0xFFBC, 0x0044,
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0xFFB8, 0x0048, 0xFFB4, 0x004C, 0x0050, 0xFFB0,
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/* V_2 bias values - 44 entries */
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0x0000, 0xFFFC, 0x0004, 0xFFF8, 0x0008, 0xFFF4, 0x000C, 0xFFF0, 0x0010,
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0xFFEC, 0x0014, 0xFFE8, 0x0018, 0x001C, 0xFFE4, 0xFFE0, 0x0020, 0xFFDC,
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0x0024, 0x0028, 0xFFD8, 0x002C, 0xFFD4, 0x0030, 0xFFD0, 0xFFCC, 0x0034,
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0xFFC8, 0x0038, 0x0040, 0xFFC4, 0xFFC0, 0x003C, 0x0044, 0xFFBC, 0xFFB8,
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0x0048, 0xFFB4, 0x004C, 0x0100, 0xFFB0, 0x0054, 0xFFAC, 0x0050
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0x0048, 0xFFB4, 0x004C, BIAS_ESC, 0xFFB0, 0x0054, 0xFFAC, 0x0050
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};
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#endif /* AVCODEC_CLEARVIDEODATA_H */
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