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Move dnxhdenc to execute2 multithreading API.

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This allows for some simplifications like removing some outer loops
and gives much better performance for thread_count > number of idle CPUs.

Originally committed as revision 20211 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Reimar Döffinger 2009-10-12 14:43:57 +00:00
parent 8d23a86f33
commit 2a1294b978
2 changed files with 29 additions and 35 deletions
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63
libavcodec/dnxhdenc.c
View File

@ -204,6 +204,7 @@ static int dnxhd_encode_init(AVCodecContext *avctx)
return -1;
FF_ALLOCZ_OR_GOTO(ctx->m.avctx, ctx->slice_size, ctx->m.mb_height*sizeof(uint32_t), fail);
FF_ALLOCZ_OR_GOTO(ctx->m.avctx, ctx->slice_offs, ctx->m.mb_height*sizeof(uint32_t), fail);
FF_ALLOCZ_OR_GOTO(ctx->m.avctx, ctx->mb_bits, ctx->m.mb_num *sizeof(uint16_t), fail);
FF_ALLOCZ_OR_GOTO(ctx->m.avctx, ctx->mb_qscale, ctx->m.mb_num *sizeof(uint8_t) , fail);
@ -211,7 +212,7 @@ static int dnxhd_encode_init(AVCodecContext *avctx)
ctx->frame.pict_type = FF_I_TYPE;
ctx->m.avctx->coded_frame = &ctx->frame;
if (avctx->thread_count > MAX_THREADS || (avctx->thread_count > ctx->m.mb_height)) {
if (avctx->thread_count > MAX_THREADS) {
av_log(avctx, AV_LOG_ERROR, "too many threads\n");
return -1;
}
@ -222,11 +223,6 @@ static int dnxhd_encode_init(AVCodecContext *avctx)
memcpy(ctx->thread[i], ctx, sizeof(DNXHDEncContext));
}
for (i = 0; i < avctx->thread_count; i++) {
ctx->thread[i]->m.start_mb_y = (ctx->m.mb_height*(i ) + avctx->thread_count/2) / avctx->thread_count;
ctx->thread[i]->m.end_mb_y = (ctx->m.mb_height*(i+1) + avctx->thread_count/2) / avctx->thread_count;
}
return 0;
fail: //for FF_ALLOCZ_OR_GOTO
return -1;
@ -397,13 +393,13 @@ static av_always_inline int dnxhd_switch_matrix(DNXHDEncContext *ctx, int i)
}
}
static int dnxhd_calc_bits_thread(AVCodecContext *avctx, void *arg)
static int dnxhd_calc_bits_thread(AVCodecContext *avctx, void *arg, int jobnr, int threadnr)
{
DNXHDEncContext *ctx = *(void**)arg;
int mb_y, mb_x;
int qscale = ctx->thread[0]->qscale;
DNXHDEncContext *ctx = avctx->priv_data;
int mb_y = jobnr, mb_x;
int qscale = ctx->qscale;
ctx = ctx->thread[threadnr];
for (mb_y = ctx->m.start_mb_y; mb_y < ctx->m.end_mb_y; mb_y++) {
ctx->m.last_dc[0] =
ctx->m.last_dc[1] =
ctx->m.last_dc[2] = 1024;
@ -443,16 +439,16 @@ static int dnxhd_calc_bits_thread(AVCodecContext *avctx, void *arg)
ctx->mb_rc[qscale][mb].ssd = ssd;
ctx->mb_rc[qscale][mb].bits = ac_bits+dc_bits+12+8*ctx->vlc_bits[0];
}
}
return 0;
}
static int dnxhd_encode_thread(AVCodecContext *avctx, void *arg)
static int dnxhd_encode_thread(AVCodecContext *avctx, void *arg, int jobnr, int threadnr)
{
DNXHDEncContext *ctx = *(void**)arg;
int mb_y, mb_x;
DNXHDEncContext *ctx = avctx->priv_data;
int mb_y = jobnr, mb_x;
ctx = ctx->thread[threadnr];
init_put_bits(&ctx->m.pb, (uint8_t *)arg + 640 + ctx->slice_offs[jobnr], ctx->slice_size[jobnr]);
for (mb_y = ctx->m.start_mb_y; mb_y < ctx->m.end_mb_y; mb_y++) {
ctx->m.last_dc[0] =
ctx->m.last_dc[1] =
ctx->m.last_dc[2] = 1024;
@ -477,18 +473,17 @@ static int dnxhd_encode_thread(AVCodecContext *avctx, void *arg)
}
if (put_bits_count(&ctx->m.pb)&31)
put_bits(&ctx->m.pb, 32-(put_bits_count(&ctx->m.pb)&31), 0);
}
flush_put_bits(&ctx->m.pb);
return 0;
}
static void dnxhd_setup_threads_slices(DNXHDEncContext *ctx, uint8_t *buf)
static void dnxhd_setup_threads_slices(DNXHDEncContext *ctx)
{
int mb_y, mb_x;
int i, offset = 0;
for (i = 0; i < ctx->m.avctx->thread_count; i++) {
int thread_size = 0;
for (mb_y = ctx->thread[i]->m.start_mb_y; mb_y < ctx->thread[i]->m.end_mb_y; mb_y++) {
int offset = 0;
for (mb_y = 0; mb_y < ctx->m.mb_height; mb_y++) {
int thread_size;
ctx->slice_offs[mb_y] = offset;
ctx->slice_size[mb_y] = 0;
for (mb_x = 0; mb_x < ctx->m.mb_width; mb_x++) {
unsigned mb = mb_y * ctx->m.mb_width + mb_x;
@ -496,18 +491,16 @@ static void dnxhd_setup_threads_slices(DNXHDEncContext *ctx, uint8_t *buf)
}
ctx->slice_size[mb_y] = (ctx->slice_size[mb_y]+31)&~31;
ctx->slice_size[mb_y] >>= 3;
thread_size += ctx->slice_size[mb_y];
}
init_put_bits(&ctx->thread[i]->m.pb, buf + 640 + offset, thread_size);
thread_size = ctx->slice_size[mb_y];
offset += thread_size;
}
}
static int dnxhd_mb_var_thread(AVCodecContext *avctx, void *arg)
static int dnxhd_mb_var_thread(AVCodecContext *avctx, void *arg, int jobnr, int threadnr)
{
DNXHDEncContext *ctx = *(void**)arg;
int mb_y, mb_x;
for (mb_y = ctx->m.start_mb_y; mb_y < ctx->m.end_mb_y; mb_y++) {
DNXHDEncContext *ctx = avctx->priv_data;
int mb_y = jobnr, mb_x;
ctx = ctx->thread[threadnr];
for (mb_x = 0; mb_x < ctx->m.mb_width; mb_x++) {
unsigned mb = mb_y * ctx->m.mb_width + mb_x;
uint8_t *pix = ctx->thread[0]->src[0] + ((mb_y<<4) * ctx->m.linesize) + (mb_x<<4);
@ -516,7 +509,6 @@ static int dnxhd_mb_var_thread(AVCodecContext *avctx, void *arg)
ctx->mb_cmp[mb].value = varc;
ctx->mb_cmp[mb].mb = mb;
}
}
return 0;
}
@ -528,7 +520,7 @@ static int dnxhd_encode_rdo(AVCodecContext *avctx, DNXHDEncContext *ctx)
for (q = 1; q < avctx->qmax; q++) {
ctx->qscale = q;
avctx->execute(avctx, dnxhd_calc_bits_thread, &ctx->thread[0], NULL, avctx->thread_count, sizeof(void*));
avctx->execute2(avctx, dnxhd_calc_bits_thread, NULL, NULL, ctx->m.mb_height);
}
up_step = down_step = 2<<LAMBDA_FRAC_BITS;
lambda = ctx->lambda;
@ -608,7 +600,7 @@ static int dnxhd_find_qscale(DNXHDEncContext *ctx)
bits = 0;
ctx->qscale = qscale;
// XXX avoid recalculating bits
ctx->m.avctx->execute(ctx->m.avctx, dnxhd_calc_bits_thread, &ctx->thread[0], NULL, ctx->m.avctx->thread_count, sizeof(void*));
ctx->m.avctx->execute2(ctx->m.avctx, dnxhd_calc_bits_thread, NULL, NULL, ctx->m.mb_height);
for (y = 0; y < ctx->m.mb_height; y++) {
for (x = 0; x < ctx->m.mb_width; x++)
bits += ctx->mb_rc[qscale][y*ctx->m.mb_width+x].bits;
@ -732,7 +724,7 @@ static int dnxhd_encode_fast(AVCodecContext *avctx, DNXHDEncContext *ctx)
}
if (!ret) {
if (RC_VARIANCE)
avctx->execute(avctx, dnxhd_mb_var_thread, &ctx->thread[0], NULL, avctx->thread_count, sizeof(void*));
avctx->execute2(avctx, dnxhd_mb_var_thread, NULL, NULL, ctx->m.mb_height);
radix_sort(ctx->mb_cmp, ctx->m.mb_num);
for (x = 0; x < ctx->m.mb_num && max_bits > ctx->frame_bits; x++) {
int mb = ctx->mb_cmp[x].mb;
@ -795,7 +787,7 @@ static int dnxhd_encode_picture(AVCodecContext *avctx, unsigned char *buf, int b
return -1;
}
dnxhd_setup_threads_slices(ctx, buf);
dnxhd_setup_threads_slices(ctx);
offset = 0;
for (i = 0; i < ctx->m.mb_height; i++) {
@ -804,7 +796,7 @@ static int dnxhd_encode_picture(AVCodecContext *avctx, unsigned char *buf, int b
assert(!(ctx->slice_size[i] & 3));
}
avctx->execute(avctx, dnxhd_encode_thread, &ctx->thread[0], NULL, avctx->thread_count, sizeof(void*));
avctx->execute2(avctx, dnxhd_encode_thread, buf, NULL, ctx->m.mb_height);
assert(640 + offset + 4 <= ctx->cid_table->coding_unit_size);
memset(buf + 640 + offset, 0, ctx->cid_table->coding_unit_size - 4 - offset - 640);
@ -840,6 +832,7 @@ static int dnxhd_encode_end(AVCodecContext *avctx)
av_freep(&ctx->mb_rc);
av_freep(&ctx->mb_cmp);
av_freep(&ctx->slice_size);
av_freep(&ctx->slice_offs);
av_freep(&ctx->qmatrix_c);
av_freep(&ctx->qmatrix_l);

1
libavcodec/dnxhdenc.h
View File

@ -46,6 +46,7 @@ typedef struct DNXHDEncContext {
const CIDEntry *cid_table;
uint8_t *msip; ///< Macroblock Scan Indexes Payload
uint32_t *slice_size;
uint32_t *slice_offs;
struct DNXHDEncContext *thread[MAX_THREADS];