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;
}
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, cid;
}
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);
}
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,
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;
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");
}
}
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 (ff_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;
*got_frame = 1;
return buf_size;
}
{
DNXHDContext *ctx = avctx->priv_data;
- if (ctx->picture.data[0])
- avctx->release_buffer(avctx, &ctx->picture);
ff_free_vlc(&ctx->ac_vlc);
ff_free_vlc(&ctx->dc_vlc);
ff_free_vlc(&ctx->run_vlc);
projects / ffmpeg / blobdiff