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ffv1dec: add code to support frame threading with gop=1 ffv1

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CODEC_CAP_FRAME_THREADS is not added yet because that would
unconditionally enable it, breaking gop>1 files.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2013-04-27 16:15:33 +02:00
parent 1a392fc550
commit ff0b4c08ca
1 changed files with 26 additions and 1 deletions
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27
libavcodec/ffv1dec.c
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@ -38,6 +38,7 @@
#include "golomb.h"
#include "mathops.h"
#include "ffv1.h"
#include "thread.h"
static inline av_flatten int get_symbol_inline(RangeCoder *c, uint8_t *state,
int is_signed)
@ -733,12 +734,14 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPac
int buf_size = avpkt->size;
FFV1Context *f = avctx->priv_data;
RangeCoder *const c = &f->slice_context[0]->c;
ThreadFrame frame = { .f = data };
int i, ret;
uint8_t keystate = 128;
const uint8_t *buf_p;
AVFrame *const p = data;
f->cur = p;
f->avctx = avctx;
ff_init_range_decoder(c, buf, buf_size);
ff_build_rac_states(c, 0.05 * (1LL << 32), 256 - 8);
@ -759,8 +762,10 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPac
p->key_frame = 0;
}
if ((ret = ff_get_buffer(avctx, p, AV_GET_BUFFER_FLAG_REF)) < 0)
if ((ret = ff_thread_get_buffer(avctx, &frame, AV_GET_BUFFER_FLAG_REF)) < 0) {
av_log(avctx, AV_LOG_ERROR, "ff_thread_get_buffer() failed.\n");
return ret;
}
if (avctx->debug & FF_DEBUG_PICT_INFO)
av_log(avctx, AV_LOG_DEBUG, "ver:%d keyframe:%d coder:%d ec:%d slices:%d bps:%d\n",
@ -801,6 +806,7 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPac
} else
fs->c.bytestream_end = (uint8_t *)(buf_p + v);
fs->avctx = avctx;
fs->cur = p;
}
@ -845,6 +851,24 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPac
return buf_size;
}
static int init_thread_copy(AVCodecContext *avctx)
{
FFV1Context *f = avctx->priv_data;
int ret, i;
for (i = 0; i < f->quant_table_count; i++) {
void *p = f->initial_states[i];
f->initial_states[i] = av_malloc(f->context_count[i] * sizeof(*f->initial_states[i]));
if (!f->initial_states[i])
return AVERROR(ENOMEM);
memcpy(f->initial_states[i], p, f->context_count[i] * sizeof(*f->initial_states[i]));
}
if ((ret = ffv1_init_slice_contexts(f)) < 0)
return ret;
return 0;
}
AVCodec ff_ffv1_decoder = {
.name = "ffv1",
.type = AVMEDIA_TYPE_VIDEO,
@ -853,6 +877,7 @@ AVCodec ff_ffv1_decoder = {
.init = decode_init,
.close = ffv1_close,
.decode = decode_frame,
.init_thread_copy = init_thread_copy,
.capabilities = CODEC_CAP_DR1 /*| CODEC_CAP_DRAW_HORIZ_BAND*/ |
CODEC_CAP_SLICE_THREADS,
.long_name = NULL_IF_CONFIG_SMALL("FFmpeg video codec #1"),