* Many thanks to Dan Dennedy <dan@dennedy.org> for providing wealth
* of DV technical info.
*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
- * FFmpeg is distributed in the hope that it will be useful,
+ * Libav is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
- * @file libavcodec/dv.c
+ * @file
* DV codec.
*/
-#define ALT_BITSTREAM_READER
+
+#include "libavutil/pixdesc.h"
#include "avcodec.h"
#include "dsputil.h"
#include "get_bits.h"
+#include "internal.h"
#include "put_bits.h"
#include "simple_idct.h"
#include "dvdata.h"
-
-//#undef NDEBUG
-//#include <assert.h>
-
-typedef struct DVVideoContext {
- const DVprofile *sys;
- AVFrame picture;
- AVCodecContext *avctx;
- uint8_t *buf;
-
- uint8_t dv_zigzag[2][64];
-
- void (*get_pixels)(DCTELEM *block, const uint8_t *pixels, int line_size);
- void (*fdct[2])(DCTELEM *block);
- void (*idct_put[2])(uint8_t *dest, int line_size, DCTELEM *block);
- me_cmp_func ildct_cmp;
-} DVVideoContext;
-
-#define TEX_VLC_BITS 9
-
-#if CONFIG_SMALL
-#define DV_VLC_MAP_RUN_SIZE 15
-#define DV_VLC_MAP_LEV_SIZE 23
-#else
-#define DV_VLC_MAP_RUN_SIZE 64
-#define DV_VLC_MAP_LEV_SIZE 512 //FIXME sign was removed so this should be /2 but needs check
-#endif
+#include "dv_tablegen.h"
/* XXX: also include quantization */
-static RL_VLC_ELEM dv_rl_vlc[1184];
-/* VLC encoding lookup table */
-static struct dv_vlc_pair {
- uint32_t vlc;
- uint8_t size;
-} dv_vlc_map[DV_VLC_MAP_RUN_SIZE][DV_VLC_MAP_LEV_SIZE];
-
-static inline int dv_work_pool_size(const DVprofile *d)
-{
- int size = d->n_difchan*d->difseg_size*27;
- if (DV_PROFILE_IS_1080i50(d))
- size -= 3*27;
- if (DV_PROFILE_IS_720p50(d))
- size -= 4*27;
- return size;
-}
+RL_VLC_ELEM ff_dv_rl_vlc[1184];
static inline void dv_calc_mb_coordinates(const DVprofile *d, int chan, int seq, int slot,
uint16_t *tbl)
}
}
-static int dv_init_dynamic_tables(const DVprofile *d)
+/* quantization quanta by QNO for DV100 */
+static const uint8_t dv100_qstep[16] = {
+ 1, /* QNO = 0 and 1 both have no quantization */
+ 1,
+ 2, 3, 4, 5, 6, 7, 8, 16, 18, 20, 22, 24, 28, 52
+};
+
+static const uint8_t dv_quant_areas[4] = { 6, 21, 43, 64 };
+
+int ff_dv_init_dynamic_tables(const DVprofile *d)
{
int j,i,c,s,p;
uint32_t *factor1, *factor2;
factor1 = &d->idct_factor[0];
factor2 = &d->idct_factor[DV_PROFILE_IS_HD(d)?4096:2816];
if (d->height == 720) {
- iweight1 = &dv_iweight_720_y[0];
- iweight2 = &dv_iweight_720_c[0];
+ iweight1 = &ff_dv_iweight_720_y[0];
+ iweight2 = &ff_dv_iweight_720_c[0];
} else {
- iweight1 = &dv_iweight_1080_y[0];
- iweight2 = &dv_iweight_1080_c[0];
- }
+ iweight1 = &ff_dv_iweight_1080_y[0];
+ iweight2 = &ff_dv_iweight_1080_c[0];
+ }
if (DV_PROFILE_IS_HD(d)) {
for (c = 0; c < 4; c++) {
for (s = 0; s < 16; s++) {
}
}
} else {
- iweight1 = &dv_iweight_88[0];
- for (j = 0; j < 2; j++, iweight1 = &dv_iweight_248[0]) {
+ iweight1 = &ff_dv_iweight_88[0];
+ for (j = 0; j < 2; j++, iweight1 = &ff_dv_iweight_248[0]) {
for (s = 0; s < 22; s++) {
for (i = c = 0; c < 4; c++) {
for (; i < dv_quant_areas[c]; i++) {
- *factor1 = iweight1[i] << (dv_quant_shifts[s][c] + 1);
+ *factor1 = iweight1[i] << (ff_dv_quant_shifts[s][c] + 1);
*factor2++ = (*factor1++) << 1;
- }
- }
+ }
+ }
+ }
}
}
}
-}
return 0;
}
-static av_cold int dvvideo_init(AVCodecContext *avctx)
+av_cold int ff_dvvideo_init(AVCodecContext *avctx)
{
DVVideoContext *s = avctx->priv_data;
DSPContext dsp;
run = new_dv_vlc_run [code] + 1;
level = new_dv_vlc_level[code];
}
- dv_rl_vlc[i].len = len;
- dv_rl_vlc[i].level = level;
- dv_rl_vlc[i].run = run;
- }
- free_vlc(&dv_vlc);
-
- for (i = 0; i < NB_DV_VLC - 1; i++) {
- if (dv_vlc_run[i] >= DV_VLC_MAP_RUN_SIZE)
- continue;
-#if CONFIG_SMALL
- if (dv_vlc_level[i] >= DV_VLC_MAP_LEV_SIZE)
- continue;
-#endif
-
- if (dv_vlc_map[dv_vlc_run[i]][dv_vlc_level[i]].size != 0)
- continue;
-
- dv_vlc_map[dv_vlc_run[i]][dv_vlc_level[i]].vlc =
- dv_vlc_bits[i] << (!!dv_vlc_level[i]);
- dv_vlc_map[dv_vlc_run[i]][dv_vlc_level[i]].size =
- dv_vlc_len[i] + (!!dv_vlc_level[i]);
- }
- for (i = 0; i < DV_VLC_MAP_RUN_SIZE; i++) {
-#if CONFIG_SMALL
- for (j = 1; j < DV_VLC_MAP_LEV_SIZE; j++) {
- if (dv_vlc_map[i][j].size == 0) {
- dv_vlc_map[i][j].vlc = dv_vlc_map[0][j].vlc |
- (dv_vlc_map[i-1][0].vlc << (dv_vlc_map[0][j].size));
- dv_vlc_map[i][j].size = dv_vlc_map[i-1][0].size +
- dv_vlc_map[0][j].size;
- }
- }
-#else
- for (j = 1; j < DV_VLC_MAP_LEV_SIZE/2; j++) {
- if (dv_vlc_map[i][j].size == 0) {
- dv_vlc_map[i][j].vlc = dv_vlc_map[0][j].vlc |
- (dv_vlc_map[i-1][0].vlc << (dv_vlc_map[0][j].size));
- dv_vlc_map[i][j].size = dv_vlc_map[i-1][0].size +
- dv_vlc_map[0][j].size;
- }
- dv_vlc_map[i][((uint16_t)(-j))&0x1ff].vlc =
- dv_vlc_map[i][j].vlc | 1;
- dv_vlc_map[i][((uint16_t)(-j))&0x1ff].size =
- dv_vlc_map[i][j].size;
- }
-#endif
+ ff_dv_rl_vlc[i].len = len;
+ ff_dv_rl_vlc[i].level = level;
+ ff_dv_rl_vlc[i].run = run;
}
+ ff_free_vlc(&dv_vlc);
}
/* Generic DSP setup */
- dsputil_init(&dsp, avctx);
+ ff_dsputil_init(&dsp, avctx);
ff_set_cmp(&dsp, dsp.ildct_cmp, avctx->ildct_cmp);
s->get_pixels = dsp.get_pixels;
s->ildct_cmp = dsp.ildct_cmp[5];
/* 248DCT setup */
s->fdct[1] = dsp.fdct248;
s->idct_put[1] = ff_simple_idct248_put; // FIXME: need to add it to DSP
- if (avctx->lowres){
- for (i = 0; i < 64; i++){
- int j = ff_zigzag248_direct[i];
- s->dv_zigzag[1][i] = dsp.idct_permutation[(j & 7) + (j & 8) * 4 + (j & 48) / 2];
- }
- }else
- memcpy(s->dv_zigzag[1], ff_zigzag248_direct, 64);
+ memcpy(s->dv_zigzag[1], ff_zigzag248_direct, 64);
avctx->coded_frame = &s->picture;
s->avctx = avctx;
return 0;
}
-// #define VLC_DEBUG
-// #define printf(...) av_log(NULL, AV_LOG_ERROR, __VA_ARGS__)
+static av_cold int dvvideo_init_encoder(AVCodecContext *avctx)
+{
+ if (!avpriv_dv_codec_profile(avctx)) {
+ av_log(avctx, AV_LOG_ERROR, "Found no DV profile for %ix%i %s video. "
+ "Valid DV profiles are:\n",
+ avctx->width, avctx->height, av_get_pix_fmt_name(avctx->pix_fmt));
+ ff_dv_print_profiles(avctx, AV_LOG_ERROR);
+ return AVERROR(EINVAL);
+ }
-typedef struct BlockInfo {
- const uint32_t *factor_table;
- const uint8_t *scan_table;
- uint8_t pos; /* position in block */
- void (*idct_put)(uint8_t *dest, int line_size, DCTELEM *block);
- uint8_t partial_bit_count;
- uint16_t partial_bit_buffer;
- int shift_offset;
-} BlockInfo;
+ dv_vlc_map_tableinit();
+
+ return ff_dvvideo_init(avctx);
+}
/* bit budget for AC only in 5 MBs */
static const int vs_total_ac_bits = (100 * 4 + 68*2) * 5;
-/* see dv_88_areas and dv_248_areas for details */
static const int mb_area_start[5] = { 1, 6, 21, 43, 64 };
-static inline int get_bits_left(GetBitContext *s)
-{
- return s->size_in_bits - get_bits_count(s);
-}
-
static inline int put_bits_left(PutBitContext* s)
{
return (s->buf_end - s->buf) * 8 - put_bits_count(s);
}
-/* decode ac coefficients */
-static void dv_decode_ac(GetBitContext *gb, BlockInfo *mb, DCTELEM *block)
-{
- int last_index = gb->size_in_bits;
- const uint8_t *scan_table = mb->scan_table;
- const uint32_t *factor_table = mb->factor_table;
- int pos = mb->pos;
- int partial_bit_count = mb->partial_bit_count;
- int level, run, vlc_len, index;
-
- OPEN_READER(re, gb);
- UPDATE_CACHE(re, gb);
-
- /* if we must parse a partial vlc, we do it here */
- if (partial_bit_count > 0) {
- re_cache = ((unsigned)re_cache >> partial_bit_count) |
- (mb->partial_bit_buffer << (sizeof(re_cache) * 8 - partial_bit_count));
- re_index -= partial_bit_count;
- mb->partial_bit_count = 0;
- }
-
- /* get the AC coefficients until last_index is reached */
- for (;;) {
-#ifdef VLC_DEBUG
- printf("%2d: bits=%04x index=%d\n", pos, SHOW_UBITS(re, gb, 16), re_index);
-#endif
- /* our own optimized GET_RL_VLC */
- index = NEG_USR32(re_cache, TEX_VLC_BITS);
- vlc_len = dv_rl_vlc[index].len;
- if (vlc_len < 0) {
- index = NEG_USR32((unsigned)re_cache << TEX_VLC_BITS, -vlc_len) + dv_rl_vlc[index].level;
- vlc_len = TEX_VLC_BITS - vlc_len;
- }
- level = dv_rl_vlc[index].level;
- run = dv_rl_vlc[index].run;
-
- /* gotta check if we're still within gb boundaries */
- if (re_index + vlc_len > last_index) {
- /* should be < 16 bits otherwise a codeword could have been parsed */
- mb->partial_bit_count = last_index - re_index;
- mb->partial_bit_buffer = NEG_USR32(re_cache, mb->partial_bit_count);
- re_index = last_index;
- break;
- }
- re_index += vlc_len;
-
-#ifdef VLC_DEBUG
- printf("run=%d level=%d\n", run, level);
-#endif
- pos += run;
- if (pos >= 64)
- break;
-
- level = (level * factor_table[pos] + (1 << (dv_iweight_bits - 1))) >> dv_iweight_bits;
- block[scan_table[pos]] = level;
-
- UPDATE_CACHE(re, gb);
- }
- CLOSE_READER(re, gb);
- mb->pos = pos;
-}
-
-static inline void bit_copy(PutBitContext *pb, GetBitContext *gb)
-{
- int bits_left = get_bits_left(gb);
- while (bits_left >= MIN_CACHE_BITS) {
- put_bits(pb, MIN_CACHE_BITS, get_bits(gb, MIN_CACHE_BITS));
- bits_left -= MIN_CACHE_BITS;
- }
- if (bits_left > 0) {
- put_bits(pb, bits_left, get_bits(gb, bits_left));
- }
-}
-
-static inline void dv_calculate_mb_xy(DVVideoContext *s, DVwork_chunk *work_chunk, int m, int *mb_x, int *mb_y)
-{
- *mb_x = work_chunk->mb_coordinates[m] & 0xff;
- *mb_y = work_chunk->mb_coordinates[m] >> 8;
-
- /* We work with 720p frames split in half. The odd half-frame (chan==2,3) is displaced :-( */
- if (s->sys->height == 720 && !(s->buf[1]&0x0C)) {
- *mb_y -= (*mb_y>17)?18:-72; /* shifting the Y coordinate down by 72/2 macro blocks */
- }
-}
-
-/* mb_x and mb_y are in units of 8 pixels */
-static int dv_decode_video_segment(AVCodecContext *avctx, void *arg)
-{
- DVVideoContext *s = avctx->priv_data;
- DVwork_chunk *work_chunk = arg;
- int quant, dc, dct_mode, class1, j;
- int mb_index, mb_x, mb_y, last_index;
- int y_stride, linesize;
- DCTELEM *block, *block1;
- int c_offset;
- uint8_t *y_ptr;
- const uint8_t *buf_ptr;
- PutBitContext pb, vs_pb;
- GetBitContext gb;
- BlockInfo mb_data[5 * DV_MAX_BPM], *mb, *mb1;
- DECLARE_ALIGNED_16(DCTELEM, sblock[5*DV_MAX_BPM][64]);
- DECLARE_ALIGNED_8(uint8_t, mb_bit_buffer[80 + 4]); /* allow some slack */
- DECLARE_ALIGNED_8(uint8_t, vs_bit_buffer[5 * 80 + 4]); /* allow some slack */
- const int log2_blocksize = 3-s->avctx->lowres;
- int is_field_mode[5];
-
- assert((((int)mb_bit_buffer) & 7) == 0);
- assert((((int)vs_bit_buffer) & 7) == 0);
-
- memset(sblock, 0, sizeof(sblock));
-
- /* pass 1 : read DC and AC coefficients in blocks */
- buf_ptr = &s->buf[work_chunk->buf_offset*80];
- block1 = &sblock[0][0];
- mb1 = mb_data;
- init_put_bits(&vs_pb, vs_bit_buffer, 5 * 80);
- for (mb_index = 0; mb_index < 5; mb_index++, mb1 += s->sys->bpm, block1 += s->sys->bpm * 64) {
- /* skip header */
- quant = buf_ptr[3] & 0x0f;
- buf_ptr += 4;
- init_put_bits(&pb, mb_bit_buffer, 80);
- mb = mb1;
- block = block1;
- is_field_mode[mb_index] = 0;
- for (j = 0; j < s->sys->bpm; j++) {
- last_index = s->sys->block_sizes[j];
- init_get_bits(&gb, buf_ptr, last_index);
-
- /* get the dc */
- dc = get_sbits(&gb, 9);
- dct_mode = get_bits1(&gb);
- class1 = get_bits(&gb, 2);
- if (DV_PROFILE_IS_HD(s->sys)) {
- mb->idct_put = s->idct_put[0];
- mb->scan_table = s->dv_zigzag[0];
- mb->factor_table = &s->sys->idct_factor[(j >= 4)*4*16*64 + class1*16*64 + quant*64];
- is_field_mode[mb_index] |= !j && dct_mode;
- } else {
- mb->idct_put = s->idct_put[dct_mode && log2_blocksize == 3];
- mb->scan_table = s->dv_zigzag[dct_mode];
- mb->factor_table = &s->sys->idct_factor[(class1 == 3)*2*22*64 + dct_mode*22*64 +
- (quant + dv_quant_offset[class1])*64];
- }
- dc = dc << 2;
- /* convert to unsigned because 128 is not added in the
- standard IDCT */
- dc += 1024;
- block[0] = dc;
- buf_ptr += last_index >> 3;
- mb->pos = 0;
- mb->partial_bit_count = 0;
-
-#ifdef VLC_DEBUG
- printf("MB block: %d, %d ", mb_index, j);
-#endif
- dv_decode_ac(&gb, mb, block);
-
- /* write the remaining bits in a new buffer only if the
- block is finished */
- if (mb->pos >= 64)
- bit_copy(&pb, &gb);
-
- block += 64;
- mb++;
- }
-
- /* pass 2 : we can do it just after */
-#ifdef VLC_DEBUG
- printf("***pass 2 size=%d MB#=%d\n", put_bits_count(&pb), mb_index);
-#endif
- block = block1;
- mb = mb1;
- init_get_bits(&gb, mb_bit_buffer, put_bits_count(&pb));
- flush_put_bits(&pb);
- for (j = 0; j < s->sys->bpm; j++, block += 64, mb++) {
- if (mb->pos < 64 && get_bits_left(&gb) > 0) {
- dv_decode_ac(&gb, mb, block);
- /* if still not finished, no need to parse other blocks */
- if (mb->pos < 64)
- break;
- }
- }
- /* all blocks are finished, so the extra bytes can be used at
- the video segment level */
- if (j >= s->sys->bpm)
- bit_copy(&vs_pb, &gb);
- }
-
- /* we need a pass other the whole video segment */
-#ifdef VLC_DEBUG
- printf("***pass 3 size=%d\n", put_bits_count(&vs_pb));
-#endif
- block = &sblock[0][0];
- mb = mb_data;
- init_get_bits(&gb, vs_bit_buffer, put_bits_count(&vs_pb));
- flush_put_bits(&vs_pb);
- for (mb_index = 0; mb_index < 5; mb_index++) {
- for (j = 0; j < s->sys->bpm; j++) {
- if (mb->pos < 64) {
-#ifdef VLC_DEBUG
- printf("start %d:%d\n", mb_index, j);
-#endif
- dv_decode_ac(&gb, mb, block);
- }
- if (mb->pos >= 64 && mb->pos < 127)
- av_log(NULL, AV_LOG_ERROR, "AC EOB marker is absent pos=%d\n", mb->pos);
- block += 64;
- mb++;
- }
- }
-
- /* compute idct and place blocks */
- block = &sblock[0][0];
- mb = mb_data;
- for (mb_index = 0; mb_index < 5; mb_index++) {
- dv_calculate_mb_xy(s, work_chunk, mb_index, &mb_x, &mb_y);
-
- /* idct_put'ting luminance */
- if ((s->sys->pix_fmt == PIX_FMT_YUV420P) ||
- (s->sys->pix_fmt == PIX_FMT_YUV411P && mb_x >= (704 / 8)) ||
- (s->sys->height >= 720 && mb_y != 134)) {
- y_stride = (s->picture.linesize[0] << ((!is_field_mode[mb_index]) * log2_blocksize));
- } else {
- y_stride = (2 << log2_blocksize);
- }
- y_ptr = s->picture.data[0] + ((mb_y * s->picture.linesize[0] + mb_x) << log2_blocksize);
- linesize = s->picture.linesize[0] << is_field_mode[mb_index];
- mb[0] .idct_put(y_ptr , linesize, block + 0*64);
- if (s->sys->video_stype == 4) { /* SD 422 */
- mb[2].idct_put(y_ptr + (1 << log2_blocksize) , linesize, block + 2*64);
- } else {
- mb[1].idct_put(y_ptr + (1 << log2_blocksize) , linesize, block + 1*64);
- mb[2].idct_put(y_ptr + y_stride, linesize, block + 2*64);
- mb[3].idct_put(y_ptr + (1 << log2_blocksize) + y_stride, linesize, block + 3*64);
- }
- mb += 4;
- block += 4*64;
-
- /* idct_put'ting chrominance */
- c_offset = (((mb_y >> (s->sys->pix_fmt == PIX_FMT_YUV420P)) * s->picture.linesize[1] +
- (mb_x >> ((s->sys->pix_fmt == PIX_FMT_YUV411P) ? 2 : 1))) << log2_blocksize);
- for (j = 2; j; j--) {
- uint8_t *c_ptr = s->picture.data[j] + c_offset;
- if (s->sys->pix_fmt == PIX_FMT_YUV411P && mb_x >= (704 / 8)) {
- uint64_t aligned_pixels[64/8];
- uint8_t *pixels = (uint8_t*)aligned_pixels;
- uint8_t *c_ptr1, *ptr1;
- int x, y;
- mb->idct_put(pixels, 8, block);
- for (y = 0; y < (1 << log2_blocksize); y++, c_ptr += s->picture.linesize[j], pixels += 8) {
- ptr1 = pixels + (1 << (log2_blocksize - 1));
- c_ptr1 = c_ptr + (s->picture.linesize[j] << log2_blocksize);
- for (x = 0; x < (1 << (log2_blocksize - 1)); x++) {
- c_ptr[x] = pixels[x];
- c_ptr1[x] = ptr1[x];
- }
- }
- block += 64; mb++;
- } else {
- y_stride = (mb_y == 134) ? (1 << log2_blocksize) :
- s->picture.linesize[j] << ((!is_field_mode[mb_index]) * log2_blocksize);
- linesize = s->picture.linesize[j] << is_field_mode[mb_index];
- (mb++)-> idct_put(c_ptr , linesize, block); block += 64;
- if (s->sys->bpm == 8) {
- (mb++)->idct_put(c_ptr + y_stride, linesize, block); block += 64;
- }
- }
- }
- }
- return 0;
-}
-
#if CONFIG_SMALL
-/* Converts run and level (where level != 0) pair into vlc, returning bit size */
+/* Converts run and level (where level != 0) pair into VLC, returning bit size */
static av_always_inline int dv_rl2vlc(int run, int level, int sign, uint32_t* vlc)
{
int size;
if (ps > 0) {
int is = s->ildct_cmp(NULL, data , NULL, linesize<<1, 4) +
s->ildct_cmp(NULL, data + linesize, NULL, linesize<<1, 4);
- return (ps > is);
+ return ps > is;
}
}
return 0;
}
+static const int dv_weight_bits = 18;
+static const int dv_weight_88[64] = {
+ 131072, 257107, 257107, 242189, 252167, 242189, 235923, 237536,
+ 237536, 235923, 229376, 231390, 223754, 231390, 229376, 222935,
+ 224969, 217965, 217965, 224969, 222935, 200636, 218652, 211916,
+ 212325, 211916, 218652, 200636, 188995, 196781, 205965, 206433,
+ 206433, 205965, 196781, 188995, 185364, 185364, 200636, 200704,
+ 200636, 185364, 185364, 174609, 180568, 195068, 195068, 180568,
+ 174609, 170091, 175557, 189591, 175557, 170091, 165371, 170627,
+ 170627, 165371, 160727, 153560, 160727, 144651, 144651, 136258,
+};
+static const int dv_weight_248[64] = {
+ 131072, 242189, 257107, 237536, 229376, 200636, 242189, 223754,
+ 224969, 196781, 262144, 242189, 229376, 200636, 257107, 237536,
+ 211916, 185364, 235923, 217965, 229376, 211916, 206433, 180568,
+ 242189, 223754, 224969, 196781, 211916, 185364, 235923, 217965,
+ 200704, 175557, 222935, 205965, 200636, 185364, 195068, 170627,
+ 229376, 211916, 206433, 180568, 200704, 175557, 222935, 205965,
+ 175557, 153560, 188995, 174609, 165371, 144651, 200636, 185364,
+ 195068, 170627, 175557, 153560, 188995, 174609, 165371, 144651,
+};
+
static av_always_inline int dv_init_enc_block(EncBlockInfo* bi, uint8_t *data, int linesize, DVVideoContext *s, int bias)
{
const int *weight;
const uint8_t* zigzag_scan;
- DECLARE_ALIGNED_16(DCTELEM, blk[64]);
+ LOCAL_ALIGNED_16(DCTELEM, blk, [64]);
int i, area;
/* We offer two different methods for class number assignment: the
method suggested in SMPTE 314M Table 22, and an improved
method. The SMPTE method is very conservative; it assigns class
3 (i.e. severe quantization) to any block where the largest AC
- component is greater than 36. FFmpeg's DV encoder tracks AC bit
+ component is greater than 36. Libav's DV encoder tracks AC bit
consumption precisely, so there is no need to bias most blocks
towards strongly lossy compression. Instead, we assign class 2
to most blocks, and use class 3 only when strictly necessary
#if 0 /* SMPTE spec method */
static const int classes[] = {12, 24, 36, 0xffff};
-#else /* improved FFmpeg method */
+#else /* improved Libav method */
static const int classes[] = {-1, -1, 255, 0xffff};
#endif
int max = classes[0];
} else {
/* We rely on the fact that encoding all zeros leads to an immediate EOB,
which is precisely what the spec calls for in the "dummy" blocks. */
- memset(blk, 0, sizeof(blk));
+ memset(blk, 0, 64*sizeof(*blk));
bi->dct_mode = 0;
}
bi->mb[0] = blk[0];
if (level + 15 > 30U) {
bi->sign[i] = (level >> 31) & 1;
- /* weigh it and and shift down into range, adding for rounding */
+ /* weight it and and shift down into range, adding for rounding */
/* the extra division by a factor of 2^4 reverses the 8x expansion of the DCT
AND the 2x doubling of the weights */
level = (FFABS(level) * weight[i] + (1 << (dv_weight_bits+3))) >> (dv_weight_bits+4);
size[i] = 0;
for (j = 0; j < 6; j++, b++) {
for (a = 0; a < 4; a++) {
- if (b->area_q[a] != dv_quant_shifts[qnos[i] + dv_quant_offset[b->cno]][a]) {
+ if (b->area_q[a] != ff_dv_quant_shifts[qnos[i] + ff_dv_quant_offset[b->cno]][a]) {
b->bit_size[a] = 1; // 4 areas 4 bits for EOB :)
b->area_q[a]++;
prev = b->prev[a];
int mb_x, mb_y, c_offset, linesize, y_stride;
uint8_t* y_ptr;
uint8_t* dif;
- uint8_t scratch[64];
+ LOCAL_ALIGNED_8(uint8_t, scratch, [64]);
EncBlockInfo enc_blks[5*DV_MAX_BPM];
PutBitContext pbs[5*DV_MAX_BPM];
PutBitContext* pb;
if (enc_blks[j].partial_bit_count)
pb = dv_encode_ac(&enc_blks[j], pb, &pbs[s->sys->bpm*5]);
if (enc_blks[j].partial_bit_count)
- av_log(NULL, AV_LOG_ERROR, "ac bitstream overflow\n");
+ av_log(avctx, AV_LOG_ERROR, "ac bitstream overflow\n");
}
- for (j=0; j<5*s->sys->bpm; j++)
+ for (j=0; j<5*s->sys->bpm; j++) {
+ int pos;
+ int size = pbs[j].size_in_bits >> 3;
flush_put_bits(&pbs[j]);
-
- return 0;
-}
-
-#if CONFIG_DVVIDEO_DECODER
-/* NOTE: exactly one frame must be given (120000 bytes for NTSC,
- 144000 bytes for PAL - or twice those for 50Mbps) */
-static int dvvideo_decode_frame(AVCodecContext *avctx,
- void *data, int *data_size,
- AVPacket *avpkt)
-{
- const uint8_t *buf = avpkt->data;
- int buf_size = avpkt->size;
- DVVideoContext *s = avctx->priv_data;
-
- s->sys = dv_frame_profile(s->sys, buf, buf_size);
- if (!s->sys || buf_size < s->sys->frame_size || dv_init_dynamic_tables(s->sys))
- return -1; /* NOTE: we only accept several full frames */
-
- if (s->picture.data[0])
- avctx->release_buffer(avctx, &s->picture);
-
- s->picture.reference = 0;
- s->picture.key_frame = 1;
- s->picture.pict_type = FF_I_TYPE;
- avctx->pix_fmt = s->sys->pix_fmt;
- avctx->time_base = s->sys->time_base;
- avcodec_set_dimensions(avctx, s->sys->width, s->sys->height);
- if (avctx->get_buffer(avctx, &s->picture) < 0) {
- av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
- return -1;
+ pos = put_bits_count(&pbs[j]) >> 3;
+ if (pos > size) {
+ av_log(avctx, AV_LOG_ERROR, "bitstream written beyond buffer size\n");
+ return -1;
+ }
+ memset(pbs[j].buf + pos, 0xff, size - pos);
}
- s->picture.interlaced_frame = 1;
- s->picture.top_field_first = 0;
- s->buf = buf;
- avctx->execute(avctx, dv_decode_video_segment, s->sys->work_chunks, NULL,
- dv_work_pool_size(s->sys), sizeof(DVwork_chunk));
-
- emms_c();
-
- /* return image */
- *data_size = sizeof(AVFrame);
- *(AVFrame*)data = s->picture;
-
- return s->sys->frame_size;
+ return 0;
}
-#endif /* CONFIG_DVVIDEO_DECODER */
-
static inline int dv_write_pack(enum dv_pack_type pack_id, DVVideoContext *c,
uint8_t* buf)
}
#if CONFIG_DVVIDEO_ENCODER
+static inline int dv_write_dif_id(enum dv_section_type t, uint8_t chan_num,
+ uint8_t seq_num, uint8_t dif_num,
+ uint8_t* buf)
+{
+ buf[0] = (uint8_t)t; /* Section type */
+ buf[1] = (seq_num << 4) | /* DIF seq number 0-9 for 525/60; 0-11 for 625/50 */
+ (chan_num << 3) | /* FSC: for 50Mb/s 0 - first channel; 1 - second */
+ 7; /* reserved -- always 1 */
+ buf[2] = dif_num; /* DIF block number Video: 0-134, Audio: 0-8 */
+ return 3;
+}
+
+
+static inline int dv_write_ssyb_id(uint8_t syb_num, uint8_t fr, uint8_t* buf)
+{
+ if (syb_num == 0 || syb_num == 6) {
+ buf[0] = (fr << 7) | /* FR ID 1 - first half of each channel; 0 - second */
+ (0 << 4) | /* AP3 (Subcode application ID) */
+ 0x0f; /* reserved -- always 1 */
+ }
+ else if (syb_num == 11) {
+ buf[0] = (fr << 7) | /* FR ID 1 - first half of each channel; 0 - second */
+ 0x7f; /* reserved -- always 1 */
+ }
+ else {
+ buf[0] = (fr << 7) | /* FR ID 1 - first half of each channel; 0 - second */
+ (0 << 4) | /* APT (Track application ID) */
+ 0x0f; /* reserved -- always 1 */
+ }
+ buf[1] = 0xf0 | /* reserved -- always 1 */
+ (syb_num & 0x0f); /* SSYB number 0 - 11 */
+ buf[2] = 0xff; /* reserved -- always 1 */
+ return 3;
+}
+
static void dv_format_frame(DVVideoContext* c, uint8_t* buf)
{
int chan, i, j, k;
}
-static int dvvideo_encode_frame(AVCodecContext *c, uint8_t *buf, int buf_size,
- void *data)
+static int dvvideo_encode_frame(AVCodecContext *c, AVPacket *pkt,
+ const AVFrame *frame, int *got_packet)
{
DVVideoContext *s = c->priv_data;
+ int ret;
- s->sys = dv_codec_profile(c);
- if (!s->sys || buf_size < s->sys->frame_size || dv_init_dynamic_tables(s->sys))
+ s->sys = avpriv_dv_codec_profile(c);
+ if (!s->sys || ff_dv_init_dynamic_tables(s->sys))
return -1;
+ if ((ret = ff_alloc_packet(pkt, s->sys->frame_size)) < 0) {
+ av_log(c, AV_LOG_ERROR, "Error getting output packet.\n");
+ return ret;
+ }
c->pix_fmt = s->sys->pix_fmt;
- s->picture = *((AVFrame *)data);
+ s->picture = *frame;
s->picture.key_frame = 1;
- s->picture.pict_type = FF_I_TYPE;
+ s->picture.pict_type = AV_PICTURE_TYPE_I;
- s->buf = buf;
+ s->buf = pkt->data;
c->execute(c, dv_encode_video_segment, s->sys->work_chunks, NULL,
dv_work_pool_size(s->sys), sizeof(DVwork_chunk));
emms_c();
- dv_format_frame(s, buf);
+ dv_format_frame(s, pkt->data);
- return s->sys->frame_size;
-}
-#endif
-
-static int dvvideo_close(AVCodecContext *c)
-{
- DVVideoContext *s = c->priv_data;
-
- if (s->picture.data[0])
- c->release_buffer(c, &s->picture);
+ pkt->flags |= AV_PKT_FLAG_KEY;
+ *got_packet = 1;
return 0;
}
-
-#if CONFIG_DVVIDEO_ENCODER
-AVCodec dvvideo_encoder = {
- "dvvideo",
- CODEC_TYPE_VIDEO,
- CODEC_ID_DVVIDEO,
- sizeof(DVVideoContext),
- dvvideo_init,
- dvvideo_encode_frame,
- .pix_fmts = (enum PixelFormat[]) {PIX_FMT_YUV411P, PIX_FMT_YUV422P, PIX_FMT_YUV420P, PIX_FMT_NONE},
- .long_name = NULL_IF_CONFIG_SMALL("DV (Digital Video)"),
+AVCodec ff_dvvideo_encoder = {
+ .name = "dvvideo",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .id = CODEC_ID_DVVIDEO,
+ .priv_data_size = sizeof(DVVideoContext),
+ .init = dvvideo_init_encoder,
+ .encode2 = dvvideo_encode_frame,
+ .capabilities = CODEC_CAP_SLICE_THREADS,
+ .pix_fmts = (const enum PixelFormat[]) {
+ PIX_FMT_YUV411P, PIX_FMT_YUV422P, PIX_FMT_YUV420P, PIX_FMT_NONE
+ },
+ .long_name = NULL_IF_CONFIG_SMALL("DV (Digital Video)"),
};
#endif // CONFIG_DVVIDEO_ENCODER
-
-#if CONFIG_DVVIDEO_DECODER
-AVCodec dvvideo_decoder = {
- "dvvideo",
- CODEC_TYPE_VIDEO,
- CODEC_ID_DVVIDEO,
- sizeof(DVVideoContext),
- dvvideo_init,
- NULL,
- dvvideo_close,
- dvvideo_decode_frame,
- CODEC_CAP_DR1,
- NULL,
- .long_name = NULL_IF_CONFIG_SMALL("DV (Digital Video)"),
-};
-#endif
projects / ffmpeg / blobdiff