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dnxhd 185 interlaced support

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Originally committed as revision 9901 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Baptiste Coudurier 2007-08-04 13:17:53 +00:00
parent dd661ebd36
commit 6b259e439c
2 changed files with 51 additions and 28 deletions
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34
libavcodec/dnxhddata.h
View File

@ -46,28 +46,26 @@ static const uint8_t dnxhd_1238_chroma_weigth[] = {
82, 77, 80, 86, 84, 82, 82, 82,
};
/* FIXME permute */
static const uint8_t dnxhd_1243_luma_weigth[] = {
0,32,35,35,38,40,44,45,
32,33,35,35,39,42,44,45,
33,35,34,37,41,42,45,45,
35,35,37,40,41,44,45,48,
35,37,38,40,43,45,47,48,
36,36,38,40,45,47,48,47,
35,36,38,41,45,46,47,48,
36,37,39,41,44,45,47,47,
0, 32, 32, 33, 33, 35, 35, 35,
35, 35, 35, 35, 34, 35, 38, 40,
39, 37, 37, 37, 36, 35, 36, 38,
40, 41, 42, 44, 45, 44, 42, 41,
40, 38, 36, 36, 37, 38, 40, 43,
44, 45, 45, 45, 45, 45, 45, 41,
39, 41, 45, 47, 47, 48, 48, 48,
46, 44, 45, 47, 47, 48, 47, 47,
};
/* FIXME permute */
static const uint8_t dnxhd_1243_chroma_weigth[] = {
0,32,37,39,41,42,45,45,
36,36,39,41,43,45,46,45,
37,41,41,43,45,44,45,46,
43,42,43,46,44,45,46,48,
43,44,47,45,44,46,47,49,
44,46,44,45,45,47,48,47,
44,42,46,44,45,46,47,48,
41,43,45,44,45,46,47,47,
0, 32, 36, 37, 36, 37, 39, 39,
41, 43, 43, 42, 41, 41, 41, 42,
43, 43, 43, 44, 44, 44, 46, 47,
46, 45, 45, 45, 45, 46, 44, 44,
45, 44, 42, 41, 43, 46, 45, 44,
45, 45, 45, 46, 46, 46, 45, 44,
45, 44, 45, 47, 47, 48, 49, 48,
46, 45, 46, 47, 47, 48, 47, 47,
};
static const uint8_t dnxhd_1238_dc_codes[12] = {

45
libavcodec/dnxhddec.c
View File

@ -69,12 +69,12 @@ static const CIDEntry cid_table[] = {
dnxhd_1238_ac_codes, dnxhd_1238_ac_bits, dnxhd_1238_ac_level,
dnxhd_1238_ac_run_flag, dnxhd_1238_ac_index_flag,
dnxhd_1238_run_codes, dnxhd_1238_run_bits, dnxhd_1238_run },
/* { 1243, 1920, 1080, 1, 917504, 458752, 4, 8, */
/* dnxhd_1243_luma_weigth, dnxhd_1243_chroma_weigth, */
/* dnxhd_1238_dc_codes, dnxhd_1238_dc_bits, */
/* dnxhd_1238_ac_codes, dnxhd_1238_ac_bits, dnxhd_1238_ac_level, */
/* dnxhd_1238_ac_run_flag, dnxhd_1238_ac_index_flag, */
/* dnxhd_1238_run_codes, dnxhd_1238_run_bits, dnxhd_1238_run }, */
{ 1243, 1920, 1080, 1, 917504, 458752, 4, 8,
dnxhd_1243_luma_weigth, dnxhd_1243_chroma_weigth,
dnxhd_1238_dc_codes, dnxhd_1238_dc_bits,
dnxhd_1238_ac_codes, dnxhd_1238_ac_bits, dnxhd_1238_ac_level,
dnxhd_1238_ac_run_flag, dnxhd_1238_ac_index_flag,
dnxhd_1238_run_codes, dnxhd_1238_run_bits, dnxhd_1238_run },
};
static int dnxhd_get_cid_table(int cid)
@ -125,7 +125,7 @@ static int dnxhd_init_vlc(DNXHDContext *ctx, int cid)
return 0;
}
static int dnxhd_decode_header(DNXHDContext *ctx, uint8_t *buf, int buf_size)
static int dnxhd_decode_header(DNXHDContext *ctx, uint8_t *buf, int buf_size, int first_field)
{
static const uint8_t header_prefix[] = { 0x00, 0x00, 0x02, 0x80, 0x01 };
int i;
@ -137,9 +137,11 @@ static int dnxhd_decode_header(DNXHDContext *ctx, uint8_t *buf, int buf_size)
av_log(ctx->avctx, AV_LOG_ERROR, "error in header\n");
return -1;
}
if (buf[5] & 2) {/* interlaced FIXME top or bottom */
if (buf[5] & 2) { /* interlaced */
ctx->cur_field = buf[5] & 1;
ctx->picture.interlaced_frame = 1;
av_log(ctx->avctx, AV_LOG_DEBUG, "interlaced %d\n", buf[5] & 3);
ctx->picture.top_field_first = first_field && ctx->cur_field == 1;
av_log(ctx->avctx, AV_LOG_DEBUG, "interlaced %d, cur field %d\n", buf[5] & 3, ctx->cur_field);
}
ctx->height = AV_RB16(buf + 0x18);
@ -265,10 +267,22 @@ static int dnxhd_decode_macroblock(DNXHDContext *ctx, int x, int y)
for (i = 0; i < 8; i++) {
dnxhd_decode_dct_block(ctx, ctx->blocks[i], i, qscale);
}
if (ctx->picture.interlaced_frame) {
dct_linesize_luma <<= 1;
dct_linesize_chroma <<= 1;
}
dest_y = ctx->picture.data[0] + ((y * dct_linesize_luma) << 4) + (x << 4);
dest_u = ctx->picture.data[1] + ((y * dct_linesize_chroma) << 4) + (x << 3);
dest_v = ctx->picture.data[2] + ((y * dct_linesize_chroma) << 4) + (x << 3);
if (ctx->cur_field) {
dest_y += ctx->picture.linesize[0];
dest_u += ctx->picture.linesize[1];
dest_v += ctx->picture.linesize[2];
}
dct_offset = dct_linesize_luma << 3;
ctx->dsp.idct_put(dest_y, dct_linesize_luma, ctx->blocks[0]);
ctx->dsp.idct_put(dest_y + 8, dct_linesize_luma, ctx->blocks[1]);
@ -308,10 +322,12 @@ static int dnxhd_decode_frame(AVCodecContext *avctx, void *data, int *data_size,
{
DNXHDContext *ctx = avctx->priv_data;
AVFrame *picture = data;
int first_field = 1;
dprintf(avctx, "frame size %d\n", buf_size);
if (dnxhd_decode_header(ctx, buf, buf_size) < 0)
decode_coding_unit:
if (dnxhd_decode_header(ctx, buf, buf_size, first_field) < 0)
return -1;
avctx->pix_fmt = PIX_FMT_YUV422P;
@ -319,15 +335,24 @@ static int dnxhd_decode_frame(AVCodecContext *avctx, void *data, int *data_size,
return -1;
avcodec_set_dimensions(avctx, ctx->width, ctx->height);
if (first_field) {
if (ctx->picture.data[0])
avctx->release_buffer(avctx, &ctx->picture);
if (avctx->get_buffer(avctx, &ctx->picture) < 0) {
av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
return -1;
}
}
dnxhd_decode_macroblocks(ctx, buf + 0x280, buf_size - 0x280);
if (first_field && ctx->picture.interlaced_frame) {
buf += ctx->cid_table->coding_unit_size;
buf_size -= ctx->cid_table->coding_unit_size;
first_field = 0;
goto decode_coding_unit;
}
*picture = ctx->picture;
*data_size = sizeof(AVPicture);
return buf_size;