* DV decoder
*/
+#include "libavutil/imgutils.h"
#include "libavutil/internal.h"
#include "libavutil/pixdesc.h"
+
#include "avcodec.h"
-#include "internal.h"
+#include "dv.h"
+#include "dvdata.h"
#include "get_bits.h"
+#include "idctdsp.h"
+#include "internal.h"
#include "put_bits.h"
#include "simple_idct.h"
-#include "dvdata.h"
-#include "dv.h"
typedef struct BlockInfo {
const uint32_t *factor_table;
static const int dv_iweight_bits = 14;
+static av_cold int dvvideo_decode_init(AVCodecContext *avctx)
+{
+ DVVideoContext *s = avctx->priv_data;
+ IDCTDSPContext idsp;
+ int i;
+
+ ff_idctdsp_init(&idsp, avctx);
+
+ for (i = 0; i < 64; i++)
+ s->dv_zigzag[0][i] = idsp.idct_permutation[ff_zigzag_direct[i]];
+
+ memcpy(s->dv_zigzag[1], ff_dv_zigzag248_direct, sizeof(s->dv_zigzag[1]));
+
+ s->idct_put[0] = idsp.idct_put;
+ s->idct_put[1] = ff_simple_idct248_put;
+
+ return ff_dvvideo_init(avctx);
+}
+
/* decode AC coefficients */
static void dv_decode_ac(GetBitContext *gb, BlockInfo *mb, int16_t *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 pos = mb->pos;
+ int partial_bit_count = mb->partial_bit_count;
int level, run, vlc_len, index;
- OPEN_READER(re, gb);
+ OPEN_READER_NOSIZE(re, gb);
UPDATE_CACHE(re, gb);
/* if we must parse a partial VLC, we do it here */
if (partial_bit_count > 0) {
- re_cache = re_cache >> partial_bit_count | mb->partial_bit_buffer;
- re_index -= partial_bit_count;
+ re_cache = re_cache >> partial_bit_count |
+ mb->partial_bit_buffer;
+ re_index -= partial_bit_count;
mb->partial_bit_count = 0;
}
/* get the AC coefficients until last_index is reached */
for (;;) {
- av_dlog(NULL, "%2d: bits=%04x index=%d\n", pos, SHOW_UBITS(re, gb, 16),
+ ff_dlog(NULL, "%2d: bits=%04x index=%d\n", pos, SHOW_UBITS(re, gb, 16),
re_index);
/* our own optimized GET_RL_VLC */
index = NEG_USR32(re_cache, TEX_VLC_BITS);
vlc_len = ff_dv_rl_vlc[index].len;
if (vlc_len < 0) {
- index = NEG_USR32((unsigned)re_cache << TEX_VLC_BITS, -vlc_len) +
+ index = NEG_USR32((unsigned) re_cache << TEX_VLC_BITS, -vlc_len) +
ff_dv_rl_vlc[index].level;
vlc_len = TEX_VLC_BITS - vlc_len;
}
/* 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_count = last_index - re_index;
mb->partial_bit_buffer = re_cache & ~(-1u >> mb->partial_bit_count);
- re_index = last_index;
+ re_index = last_index;
break;
}
re_index += vlc_len;
- av_dlog(NULL, "run=%d level=%d\n", run, level);
+ ff_dlog(NULL, "run=%d level=%d\n", run, level);
pos += run;
if (pos >= 64)
break;
- level = (level * factor_table[pos] + (1 << (dv_iweight_bits - 1))) >> dv_iweight_bits;
+ level = (level * factor_table[pos] + (1 << (dv_iweight_bits - 1))) >>
+ dv_iweight_bits;
block[scan_table[pos]] = level;
UPDATE_CACHE(re, gb);
put_bits(pb, MIN_CACHE_BITS, get_bits(gb, MIN_CACHE_BITS));
bits_left -= MIN_CACHE_BITS;
}
- if (bits_left > 0) {
+ if (bits_left > 0)
put_bits(pb, bits_left, get_bits(gb, bits_left));
- }
}
/* mb_x and mb_y are in units of 8 pixels */
PutBitContext pb, vs_pb;
GetBitContext gb;
BlockInfo mb_data[5 * DV_MAX_BPM], *mb, *mb1;
- LOCAL_ALIGNED_16(int16_t, sblock, [5*DV_MAX_BPM], [64]);
- LOCAL_ALIGNED_16(uint8_t, mb_bit_buffer, [ 80 + FF_INPUT_BUFFER_PADDING_SIZE]); /* allow some slack */
- LOCAL_ALIGNED_16(uint8_t, vs_bit_buffer, [5*80 + FF_INPUT_BUFFER_PADDING_SIZE]); /* allow some slack */
+ LOCAL_ALIGNED_16(int16_t, sblock, [5 * DV_MAX_BPM], [64]);
+ LOCAL_ALIGNED_16(uint8_t, mb_bit_buffer, [80 + AV_INPUT_BUFFER_PADDING_SIZE]); /* allow some slack */
+ LOCAL_ALIGNED_16(uint8_t, vs_bit_buffer, [80 * 5 + AV_INPUT_BUFFER_PADDING_SIZE]); /* allow some slack */
const int log2_blocksize = 3;
int is_field_mode[5];
- assert((((int)mb_bit_buffer) & 7) == 0);
- assert((((int)vs_bit_buffer) & 7) == 0);
+ assert((((int) mb_bit_buffer) & 7) == 0);
+ assert((((int) vs_bit_buffer) & 7) == 0);
- memset(sblock, 0, 5*DV_MAX_BPM*sizeof(*sblock));
+ memset(sblock, 0, 5 * DV_MAX_BPM * sizeof(*sblock));
/* pass 1: read DC and AC coefficients in blocks */
- buf_ptr = &s->buf[work_chunk->buf_offset*80];
+ 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;
+ quant = buf_ptr[3] & 0x0f;
buf_ptr += 4;
init_put_bits(&pb, mb_bit_buffer, 80);
mb = mb1;
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->idct_factor[(j >= 4)*4*16*64 + class1*16*64 + quant*64];
+ mb->factor_table = &s->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->idct_factor[(class1 == 3)*2*22*64 + dct_mode*22*64 +
- (quant + ff_dv_quant_offset[class1])*64];
+ mb->factor_table =
+ &s->idct_factor[(class1 == 3) * 2 * 22 * 64 +
+ dct_mode * 22 * 64 +
+ (quant + ff_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;
+ * standard IDCT */
+ dc += 1024;
+ block[0] = dc;
+ buf_ptr += last_index >> 3;
mb->pos = 0;
mb->partial_bit_count = 0;
- av_dlog(avctx, "MB block: %d, %d ", mb_index, j);
+ ff_dlog(avctx, "MB block: %d, %d ", mb_index, j);
dv_decode_ac(&gb, mb, block);
/* write the remaining bits in a new buffer only if the
- block is finished */
+ * block is finished */
if (mb->pos >= 64)
bit_copy(&pb, &gb);
}
/* pass 2: we can do it just after */
- av_dlog(avctx, "***pass 2 size=%d MB#=%d\n", put_bits_count(&pb), mb_index);
+ ff_dlog(avctx, "***pass 2 size=%d MB#=%d\n", put_bits_count(&pb), mb_index);
block = block1;
mb = mb1;
init_get_bits(&gb, mb_bit_buffer, put_bits_count(&pb));
}
}
/* all blocks are finished, so the extra bytes can be used at
- the video segment level */
+ * the video segment level */
if (j >= s->sys->bpm)
bit_copy(&vs_pb, &gb);
}
/* we need a pass over the whole video segment */
- av_dlog(avctx, "***pass 3 size=%d\n", put_bits_count(&vs_pb));
+ ff_dlog(avctx, "***pass 3 size=%d\n", put_bits_count(&vs_pb));
block = &sblock[0][0];
mb = mb_data;
init_get_bits(&gb, vs_bit_buffer, put_bits_count(&vs_pb));
for (mb_index = 0; mb_index < 5; mb_index++) {
for (j = 0; j < s->sys->bpm; j++) {
if (mb->pos < 64) {
- av_dlog(avctx, "start %d:%d\n", mb_index, j);
+ ff_dlog(avctx, "start %d:%d\n", mb_index, j);
dv_decode_ac(&gb, mb, block);
}
if (mb->pos >= 64 && mb->pos < 127)
- av_log(avctx, AV_LOG_ERROR, "AC EOB marker is absent pos=%d\n", mb->pos);
+ av_log(avctx, AV_LOG_ERROR,
+ "AC EOB marker is absent pos=%d\n", mb->pos);
block += 64;
mb++;
}
dv_calculate_mb_xy(s, work_chunk, mb_index, &mb_x, &mb_y);
/* idct_put'ting luminance */
- if ((s->sys->pix_fmt == AV_PIX_FMT_YUV420P) ||
+ if ((s->sys->pix_fmt == AV_PIX_FMT_YUV420P) ||
(s->sys->pix_fmt == AV_PIX_FMT_YUV411P && mb_x >= (704 / 8)) ||
(s->sys->height >= 720 && mb_y != 134)) {
- y_stride = (s->frame->linesize[0] << ((!is_field_mode[mb_index]) * log2_blocksize));
+ y_stride = (s->frame->linesize[0] <<
+ ((!is_field_mode[mb_index]) * log2_blocksize));
} else {
y_stride = (2 << log2_blocksize);
}
- y_ptr = s->frame->data[0] + ((mb_y * s->frame->linesize[0] + mb_x) << log2_blocksize);
+ y_ptr = s->frame->data[0] +
+ ((mb_y * s->frame->linesize[0] + mb_x) << log2_blocksize);
linesize = s->frame->linesize[0] << is_field_mode[mb_index];
- mb[0] .idct_put(y_ptr , linesize, block + 0*64);
+ 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);
+ 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[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;
+ mb += 4;
+ block += 4 * 64;
/* idct_put'ting chrominance */
c_offset = (((mb_y >> (s->sys->pix_fmt == AV_PIX_FMT_YUV420P)) * s->frame->linesize[1] +
for (j = 2; j; j--) {
uint8_t *c_ptr = s->frame->data[j] + c_offset;
if (s->sys->pix_fmt == AV_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->frame->linesize[j], pixels += 8) {
- ptr1 = pixels + (1 << (log2_blocksize - 1));
- c_ptr1 = c_ptr + (s->frame->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++;
+ 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->frame->linesize[j], pixels += 8) {
+ ptr1 = pixels + (1 << (log2_blocksize - 1));
+ c_ptr1 = c_ptr + (s->frame->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->frame->linesize[j] << ((!is_field_mode[mb_index]) * log2_blocksize);
- linesize = s->frame->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;
- }
+ y_stride = (mb_y == 134) ? (1 << log2_blocksize) :
+ s->frame->linesize[j] << ((!is_field_mode[mb_index]) * log2_blocksize);
+ linesize = s->frame->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;
+ }
}
}
}
}
/* 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 *got_frame,
- AVPacket *avpkt)
+ * 144000 bytes for PAL - or twice those for 50Mbps) */
+static int dvvideo_decode_frame(AVCodecContext *avctx, void *data,
+ int *got_frame, AVPacket *avpkt)
{
uint8_t *buf = avpkt->data;
int buf_size = avpkt->size;
DVVideoContext *s = avctx->priv_data;
- const uint8_t* vsc_pack;
+ AVFrame *frame = data;
+ const uint8_t *vsc_pack;
int apt, is16_9, ret;
- const DVprofile *sys;
+ const AVDVProfile *sys;
- sys = avpriv_dv_frame_profile(s->sys, buf, buf_size);
+ sys = av_dv_frame_profile(s->sys, buf, buf_size);
if (!sys || buf_size < sys->frame_size) {
av_log(avctx, AV_LOG_ERROR, "could not find dv frame profile\n");
return -1; /* NOTE: we only accept several full frames */
s->sys = sys;
}
- s->frame = data;
- s->frame->key_frame = 1;
- s->frame->pict_type = AV_PICTURE_TYPE_I;
- avctx->pix_fmt = s->sys->pix_fmt;
- avctx->time_base = s->sys->time_base;
+ s->frame = frame;
+ frame->key_frame = 1;
+ frame->pict_type = AV_PICTURE_TYPE_I;
+ avctx->pix_fmt = s->sys->pix_fmt;
+ avctx->framerate = av_inv_q(s->sys->time_base);
ret = ff_set_dimensions(avctx, s->sys->width, s->sys->height);
if (ret < 0)
return ret;
- if (ff_get_buffer(avctx, s->frame, 0) < 0) {
+ /* Determine the codec's sample_aspect ratio from the packet */
+ vsc_pack = buf + 80 * 5 + 48 + 5;
+ if (*vsc_pack == dv_video_control) {
+ apt = buf[4] & 0x07;
+ is16_9 = (vsc_pack[2] & 0x07) == 0x02 ||
+ (!apt && (vsc_pack[2] & 0x07) == 0x07);
+ ff_set_sar(avctx, s->sys->sar[is16_9]);
+ }
+
+ if (ff_get_buffer(avctx, frame, 0) < 0) {
av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
return -1;
}
- s->frame->interlaced_frame = 1;
- s->frame->top_field_first = 0;
+ frame->interlaced_frame = 1;
+ frame->top_field_first = 0;
s->buf = buf;
avctx->execute(avctx, dv_decode_video_segment, s->work_chunks, NULL,
/* return image */
*got_frame = 1;
- /* Determine the codec's sample_aspect ratio from the packet */
- vsc_pack = buf + 80*5 + 48 + 5;
- if ( *vsc_pack == dv_video_control ) {
- apt = buf[4] & 0x07;
- is16_9 = (vsc_pack && ((vsc_pack[2] & 0x07) == 0x02 || (!apt && (vsc_pack[2] & 0x07) == 0x07)));
- avctx->sample_aspect_ratio = s->sys->sar[is16_9];
- }
-
return s->sys->frame_size;
}
.type = AVMEDIA_TYPE_VIDEO,
.id = AV_CODEC_ID_DVVIDEO,
.priv_data_size = sizeof(DVVideoContext),
- .init = ff_dvvideo_init,
+ .init = dvvideo_decode_init,
.decode = dvvideo_decode_frame,
- .capabilities = CODEC_CAP_DR1 | CODEC_CAP_SLICE_THREADS,
+ .capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_SLICE_THREADS,
};
projects / ffmpeg / blobdiff