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Code Issues Releases Activity

mimic: drop AVPicture usage

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Work on the AVFrame references directly.

Instead of setting up a flipped/swapped "view" on the pictures,
flip/swap them when returning decoded frames to the API user.
This commit is contained in:
wm4
2015-10-13 14:48:55 +02:00
committed by Vittorio Giovara
parent 6fdd4c678a
commit 6a23a34274
1 changed files with 14 additions and 17 deletions
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31
libavcodec/mimic.c
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@@ -48,7 +48,6 @@ typedef struct MimicContext {
int prev_index;
ThreadFrame frames [16];
AVPicture flipped_ptrs[16];
DECLARE_ALIGNED(16, int16_t, dct_block)[64];
@@ -177,8 +176,6 @@ static int mimic_decode_update_thread_context(AVCodecContext *avctx, const AVCod
dst->cur_index = src->next_cur_index;
dst->prev_index = src->next_prev_index;
memcpy(dst->flipped_ptrs, src->flipped_ptrs, sizeof(src->flipped_ptrs));
for (i = 0; i < FF_ARRAY_ELEMS(dst->frames); i++) {
ff_thread_release_buffer(avctx, &dst->frames[i]);
if (src->frames[i].f->data[0]) {
@@ -281,9 +278,9 @@ static int decode(MimicContext *ctx, int quality, int num_coeffs,
const int is_chroma = !!plane;
const int qscale = av_clip(10000 - quality, is_chroma ? 1000 : 2000,
10000) << 2;
const int stride = ctx->flipped_ptrs[ctx->cur_index ].linesize[plane];
const uint8_t *src = ctx->flipped_ptrs[ctx->prev_index].data[plane];
uint8_t *dst = ctx->flipped_ptrs[ctx->cur_index ].data[plane];
const int stride = ctx->frames[ctx->cur_index ].f->linesize[plane];
const uint8_t *src = ctx->frames[ctx->prev_index].f->data[plane];
uint8_t *dst = ctx->frames[ctx->cur_index ].f->data[plane];
for (y = 0; y < ctx->num_vblocks[plane]; y++) {
for (x = 0; x < ctx->num_hblocks[plane]; x++) {
@@ -306,13 +303,13 @@ static int decode(MimicContext *ctx, int quality, int num_coeffs,
} else {
unsigned int backref = get_bits(&ctx->gb, 4);
int index = (ctx->cur_index + backref) & 15;
uint8_t *p = ctx->flipped_ptrs[index].data[0];
uint8_t *p = ctx->frames[index].f->data[0];
if (index != ctx->cur_index && p) {
ff_thread_await_progress(&ctx->frames[index],
cur_row, 0);
p += src -
ctx->flipped_ptrs[ctx->prev_index].data[plane];
ctx->frames[ctx->prev_index].f->data[plane];
ctx->hdsp.put_pixels_tab[1][0](dst, p, stride, 8);
} else {
av_log(ctx->avctx, AV_LOG_ERROR,
@@ -339,17 +336,18 @@ static int decode(MimicContext *ctx, int quality, int num_coeffs,
}
/**
* Flip the buffer upside-down and put it in the YVU order to match the
* Flip the buffer upside-down and put it in the YVU order to revert the
* way Mimic encodes frames.
*/
static void prepare_avpic(MimicContext *ctx, AVPicture *dst, AVFrame *src)
static void flip_swap_frame(AVFrame *f)
{
int i;
dst->data[0] = src->data[0] + ( ctx->avctx->height - 1) * src->linesize[0];
dst->data[1] = src->data[2] + ((ctx->avctx->height >> 1) - 1) * src->linesize[2];
dst->data[2] = src->data[1] + ((ctx->avctx->height >> 1) - 1) * src->linesize[1];
uint8_t *data_1 = f->data[1];
f->data[0] = f->data[0] + ( f->height - 1) * f->linesize[0];
f->data[1] = f->data[2] + ((f->height >> 1) - 1) * f->linesize[2];
f->data[2] = data_1 + ((f->height >> 1) - 1) * f->linesize[1];
for (i = 0; i < 3; i++)
dst->linesize[i] = -src->linesize[i];
f->linesize[i] *= -1;
}
static int mimic_decode_frame(AVCodecContext *avctx, void *data,
@@ -419,9 +417,6 @@ static int mimic_decode_frame(AVCodecContext *avctx, void *data,
ctx->next_prev_index = ctx->cur_index;
ctx->next_cur_index = (ctx->cur_index - 1) & 15;
prepare_avpic(ctx, &ctx->flipped_ptrs[ctx->cur_index],
ctx->frames[ctx->cur_index].f);
ff_thread_finish_setup(avctx);
av_fast_padded_malloc(&ctx->swap_buf, &ctx->swap_buf_size, swap_buf_size);
@@ -446,6 +441,8 @@ static int mimic_decode_frame(AVCodecContext *avctx, void *data,
return res;
*got_frame = 1;
flip_swap_frame(data);
ctx->prev_index = ctx->next_prev_index;
ctx->cur_index = ctx->next_cur_index;