#include "get_bits.h"
#include "dnxhddata.h"
#include "dsputil.h"
+#include "internal.h"
typedef struct DNXHDContext {
AVCodecContext *avctx;
- AVFrame picture;
GetBitContext gb;
int cid; ///< compression id
unsigned int width, height;
VLC ac_vlc, dc_vlc, run_vlc;
int last_dc[3];
DSPContext dsp;
- DECLARE_ALIGNED(16, DCTELEM, blocks)[8][64];
+ DECLARE_ALIGNED(16, int16_t, blocks)[8][64];
ScanTable scantable;
const CIDEntry *cid_table;
int bit_depth; // 8, 10 or 0 if not initialized at all.
- void (*decode_dct_block)(struct DNXHDContext *ctx, DCTELEM *block,
+ void (*decode_dct_block)(struct DNXHDContext *ctx, int16_t *block,
int n, int qscale);
} DNXHDContext;
#define DNXHD_VLC_BITS 9
#define DNXHD_DC_VLC_BITS 7
-static void dnxhd_decode_dct_block_8(DNXHDContext *ctx, DCTELEM *block, int n, int qscale);
-static void dnxhd_decode_dct_block_10(DNXHDContext *ctx, DCTELEM *block, int n, int qscale);
+static void dnxhd_decode_dct_block_8(DNXHDContext *ctx, int16_t *block, int n, int qscale);
+static void dnxhd_decode_dct_block_10(DNXHDContext *ctx, int16_t *block, int n, int qscale);
static av_cold int dnxhd_decode_init(AVCodecContext *avctx)
{
DNXHDContext *ctx = avctx->priv_data;
ctx->avctx = avctx;
- avctx->coded_frame = &ctx->picture;
- ctx->picture.type = AV_PICTURE_TYPE_I;
- ctx->picture.key_frame = 1;
return 0;
}
static int dnxhd_init_vlc(DNXHDContext *ctx, int cid)
{
- if (!ctx->cid_table) {
+ if (cid != ctx->cid) {
int index;
if ((index = ff_dnxhd_get_cid_table(cid)) < 0) {
return -1;
}
ctx->cid_table = &ff_dnxhd_cid_table[index];
+
+ ff_free_vlc(&ctx->ac_vlc);
+ ff_free_vlc(&ctx->dc_vlc);
+ ff_free_vlc(&ctx->run_vlc);
+
init_vlc(&ctx->ac_vlc, DNXHD_VLC_BITS, 257,
ctx->cid_table->ac_bits, 1, 1,
ctx->cid_table->ac_codes, 2, 2, 0);
ctx->cid_table->run_codes, 2, 2, 0);
ff_init_scantable(ctx->dsp.idct_permutation, &ctx->scantable, ff_zigzag_direct);
+ ctx->cid = cid;
}
return 0;
}
-static int dnxhd_decode_header(DNXHDContext *ctx, const uint8_t *buf, int buf_size, int first_field)
+static int dnxhd_decode_header(DNXHDContext *ctx, AVFrame *frame,
+ const uint8_t *buf, int buf_size, int first_field)
{
static const uint8_t header_prefix[] = { 0x00, 0x00, 0x02, 0x80, 0x01 };
- int i;
+ int i, cid;
if (buf_size < 0x280)
return -1;
}
if (buf[5] & 2) { /* interlaced */
ctx->cur_field = buf[5] & 1;
- ctx->picture.interlaced_frame = 1;
- ctx->picture.top_field_first = first_field ^ ctx->cur_field;
+ frame->interlaced_frame = 1;
+ frame->top_field_first = first_field ^ ctx->cur_field;
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);
ctx->width = AV_RB16(buf + 0x1a);
- av_dlog(ctx->avctx, "width %d, heigth %d\n", ctx->width, ctx->height);
+ av_dlog(ctx->avctx, "width %d, height %d\n", ctx->width, ctx->height);
if (buf[0x21] & 0x40) {
- ctx->avctx->pix_fmt = PIX_FMT_YUV422P10;
+ ctx->avctx->pix_fmt = AV_PIX_FMT_YUV422P10;
ctx->avctx->bits_per_raw_sample = 10;
if (ctx->bit_depth != 10) {
- dsputil_init(&ctx->dsp, ctx->avctx);
+ ff_dsputil_init(&ctx->dsp, ctx->avctx);
ctx->bit_depth = 10;
ctx->decode_dct_block = dnxhd_decode_dct_block_10;
}
} else {
- ctx->avctx->pix_fmt = PIX_FMT_YUV422P;
+ ctx->avctx->pix_fmt = AV_PIX_FMT_YUV422P;
ctx->avctx->bits_per_raw_sample = 8;
if (ctx->bit_depth != 8) {
- dsputil_init(&ctx->dsp, ctx->avctx);
+ ff_dsputil_init(&ctx->dsp, ctx->avctx);
ctx->bit_depth = 8;
ctx->decode_dct_block = dnxhd_decode_dct_block_8;
}
}
- ctx->cid = AV_RB32(buf + 0x28);
- av_dlog(ctx->avctx, "compression id %d\n", ctx->cid);
+ cid = AV_RB32(buf + 0x28);
+ av_dlog(ctx->avctx, "compression id %d\n", cid);
- if (dnxhd_init_vlc(ctx, ctx->cid) < 0)
+ if (dnxhd_init_vlc(ctx, cid) < 0)
return -1;
if (buf_size < ctx->cid_table->coding_unit_size) {
av_dlog(ctx->avctx, "mb width %d, mb height %d\n", ctx->mb_width, ctx->mb_height);
- if ((ctx->height+15)>>4 == ctx->mb_height && ctx->picture.interlaced_frame)
+ if ((ctx->height+15)>>4 == ctx->mb_height && frame->interlaced_frame)
ctx->height <<= 1;
if (ctx->mb_height > 68 ||
- (ctx->mb_height<<ctx->picture.interlaced_frame) > (ctx->height+15)>>4) {
+ (ctx->mb_height << frame->interlaced_frame) > (ctx->height+15)>>4) {
av_log(ctx->avctx, AV_LOG_ERROR, "mb height too big: %d\n", ctx->mb_height);
return -1;
}
}
static av_always_inline void dnxhd_decode_dct_block(DNXHDContext *ctx,
- DCTELEM *block, int n,
+ int16_t *block, int n,
int qscale,
int index_bits,
int level_bias,
ctx->last_dc[component] += level;
}
block[0] = ctx->last_dc[component];
- //av_log(ctx->avctx, AV_LOG_DEBUG, "dc %d\n", block[0]);
for (i = 1; ; i++) {
UPDATE_CACHE(bs, &ctx->gb);
GET_VLC(index1, bs, &ctx->gb, ctx->ac_vlc.table,
DNXHD_VLC_BITS, 2);
- //av_log(ctx->avctx, AV_LOG_DEBUG, "index %d\n", index1);
level = ctx->cid_table->ac_level[index1];
- if (!level) { /* EOB */
- //av_log(ctx->avctx, AV_LOG_DEBUG, "EOB\n");
+ if (!level) /* EOB */
break;
- }
sign = SHOW_SBITS(bs, &ctx->gb, 1);
SKIP_BITS(bs, &ctx->gb, 1);
}
j = ctx->scantable.permutated[i];
- //av_log(ctx->avctx, AV_LOG_DEBUG, "j %d\n", j);
- //av_log(ctx->avctx, AV_LOG_DEBUG, "level %d, weight %d\n", level, weight_matrix[i]);
level = (2*level+1) * qscale * weight_matrix[i];
- if (weight_matrix[i] != level_bias)
+ if (level_bias < 32 || weight_matrix[i] != level_bias)
level += level_bias;
level >>= level_shift;
- //av_log(NULL, AV_LOG_DEBUG, "i %d, j %d, end level %d\n", i, j, level);
block[j] = (level^sign) - sign;
}
CLOSE_READER(bs, &ctx->gb);
}
-static void dnxhd_decode_dct_block_8(DNXHDContext *ctx, DCTELEM *block,
+static void dnxhd_decode_dct_block_8(DNXHDContext *ctx, int16_t *block,
int n, int qscale)
{
dnxhd_decode_dct_block(ctx, block, n, qscale, 4, 32, 6);
}
-static void dnxhd_decode_dct_block_10(DNXHDContext *ctx, DCTELEM *block,
+static void dnxhd_decode_dct_block_10(DNXHDContext *ctx, int16_t *block,
int n, int qscale)
{
dnxhd_decode_dct_block(ctx, block, n, qscale, 6, 8, 4);
}
-static int dnxhd_decode_macroblock(DNXHDContext *ctx, int x, int y)
+static int dnxhd_decode_macroblock(DNXHDContext *ctx, AVFrame *frame, int x, int y)
{
int shift1 = ctx->bit_depth == 10;
- int dct_linesize_luma = ctx->picture.linesize[0];
- int dct_linesize_chroma = ctx->picture.linesize[1];
+ int dct_linesize_luma = frame->linesize[0];
+ int dct_linesize_chroma = frame->linesize[1];
uint8_t *dest_y, *dest_u, *dest_v;
int dct_y_offset, dct_x_offset;
int qscale, i;
qscale = get_bits(&ctx->gb, 11);
skip_bits1(&ctx->gb);
- //av_log(ctx->avctx, AV_LOG_DEBUG, "qscale %d\n", qscale);
for (i = 0; i < 8; i++) {
ctx->dsp.clear_block(ctx->blocks[i]);
ctx->decode_dct_block(ctx, ctx->blocks[i], i, qscale);
}
- if (ctx->picture.interlaced_frame) {
+ if (frame->interlaced_frame) {
dct_linesize_luma <<= 1;
dct_linesize_chroma <<= 1;
}
- dest_y = ctx->picture.data[0] + ((y * dct_linesize_luma) << 4) + (x << (4 + shift1));
- dest_u = ctx->picture.data[1] + ((y * dct_linesize_chroma) << 4) + (x << (3 + shift1));
- dest_v = ctx->picture.data[2] + ((y * dct_linesize_chroma) << 4) + (x << (3 + shift1));
+ dest_y = frame->data[0] + ((y * dct_linesize_luma) << 4) + (x << (4 + shift1));
+ dest_u = frame->data[1] + ((y * dct_linesize_chroma) << 4) + (x << (3 + shift1));
+ dest_v = frame->data[2] + ((y * dct_linesize_chroma) << 4) + (x << (3 + shift1));
if (ctx->cur_field) {
- dest_y += ctx->picture.linesize[0];
- dest_u += ctx->picture.linesize[1];
- dest_v += ctx->picture.linesize[2];
+ dest_y += frame->linesize[0];
+ dest_u += frame->linesize[1];
+ dest_v += frame->linesize[2];
}
dct_y_offset = dct_linesize_luma << 3;
return 0;
}
-static int dnxhd_decode_macroblocks(DNXHDContext *ctx, const uint8_t *buf, int buf_size)
+static int dnxhd_decode_macroblocks(DNXHDContext *ctx, AVFrame *frame,
+ const uint8_t *buf, int buf_size)
{
int x, y;
for (y = 0; y < ctx->mb_height; y++) {
init_get_bits(&ctx->gb, buf + ctx->mb_scan_index[y], (buf_size - ctx->mb_scan_index[y]) << 3);
for (x = 0; x < ctx->mb_width; x++) {
//START_TIMER;
- dnxhd_decode_macroblock(ctx, x, y);
+ dnxhd_decode_macroblock(ctx, frame, x, y);
//STOP_TIMER("decode macroblock");
}
}
return 0;
}
-static int dnxhd_decode_frame(AVCodecContext *avctx, void *data, int *data_size,
+static int dnxhd_decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
AVPacket *avpkt)
{
const uint8_t *buf = avpkt->data;
DNXHDContext *ctx = avctx->priv_data;
AVFrame *picture = data;
int first_field = 1;
+ int ret;
av_dlog(avctx, "frame size %d\n", buf_size);
decode_coding_unit:
- if (dnxhd_decode_header(ctx, buf, buf_size, first_field) < 0)
+ if (dnxhd_decode_header(ctx, picture, buf, buf_size, first_field) < 0)
return -1;
if ((avctx->width || avctx->height) &&
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) {
+ if ((ret = ff_get_buffer(avctx, picture, 0)) < 0) {
av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
- return -1;
+ return ret;
}
+ picture->pict_type = AV_PICTURE_TYPE_I;
+ picture->key_frame = 1;
}
- dnxhd_decode_macroblocks(ctx, buf + 0x280, buf_size - 0x280);
+ dnxhd_decode_macroblocks(ctx, picture, buf + 0x280, buf_size - 0x280);
- if (first_field && ctx->picture.interlaced_frame) {
+ if (first_field && 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);
+ *got_frame = 1;
return buf_size;
}
{
DNXHDContext *ctx = avctx->priv_data;
- if (ctx->picture.data[0])
- avctx->release_buffer(avctx, &ctx->picture);
- free_vlc(&ctx->ac_vlc);
- free_vlc(&ctx->dc_vlc);
- free_vlc(&ctx->run_vlc);
+ ff_free_vlc(&ctx->ac_vlc);
+ ff_free_vlc(&ctx->dc_vlc);
+ ff_free_vlc(&ctx->run_vlc);
return 0;
}
AVCodec ff_dnxhd_decoder = {
- "dnxhd",
- AVMEDIA_TYPE_VIDEO,
- CODEC_ID_DNXHD,
- sizeof(DNXHDContext),
- dnxhd_decode_init,
- NULL,
- dnxhd_decode_close,
- dnxhd_decode_frame,
- CODEC_CAP_DR1,
- .long_name = NULL_IF_CONFIG_SMALL("VC3/DNxHD"),
+ .name = "dnxhd",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .id = AV_CODEC_ID_DNXHD,
+ .priv_data_size = sizeof(DNXHDContext),
+ .init = dnxhd_decode_init,
+ .close = dnxhd_decode_close,
+ .decode = dnxhd_decode_frame,
+ .capabilities = CODEC_CAP_DR1,
+ .long_name = NULL_IF_CONFIG_SMALL("VC3/DNxHD"),
};
projects / ffmpeg / blobdiff