mirror of
https://github.com/FFmpeg/FFmpeg.git
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exr: slice threading
Signed-off-by: Paul B Mahol <onemda@gmail.com>
This commit is contained in:
Paul B Mahol
parent
845bf99312
commit
1a08758e7c
357
libavcodec/exr.c
357
libavcodec/exr.c
@ -48,17 +48,33 @@ enum ExrCompr {
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EXR_B44A = 7,
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};
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typedef struct EXRContext {
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AVFrame picture;
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int compr;
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int bits_per_color_id;
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int channel_offsets[4]; // 0 = red, 1 = green, 2 = blue and 3 = alpha
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typedef struct EXRThreadData {
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uint8_t *uncompressed_data;
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int uncompressed_size;
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uint8_t *tmp;
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int tmp_size;
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} EXRThreadData;
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typedef struct EXRContext {
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AVFrame picture;
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int compr;
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int bits_per_color_id;
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int channel_offsets[4]; // 0 = red, 1 = green, 2 = blue and 3 = alpha
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const AVPixFmtDescriptor *desc;
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uint32_t xmax, xmin;
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uint32_t ymax, ymin;
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uint32_t xdelta, ydelta;
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uint64_t scan_line_size;
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int scan_lines_per_block;
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const uint8_t *buf, *table;
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int buf_size;
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EXRThreadData *thread_data;
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int thread_data_size;
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} EXRContext;
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/**
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@ -219,6 +235,131 @@ static int rle_uncompress(const uint8_t *src, int ssize, uint8_t *dst, int dsize
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return dend != d;
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}
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static int decode_block(AVCodecContext *avctx, void *tdata,
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int jobnr, int threadnr)
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{
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EXRContext *s = avctx->priv_data;
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AVFrame *const p = &s->picture;
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EXRThreadData *td = &s->thread_data[threadnr];
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const uint8_t *channel_buffer[4] = { 0 };
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const uint8_t *buf = s->buf;
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uint64_t line_offset, uncompressed_size;
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uint32_t xdelta = s->xdelta;
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uint16_t *ptr_x;
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uint8_t *ptr;
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int32_t data_size, line;
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const uint8_t *src;
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int axmax = (avctx->width - (s->xmax + 1)) * 2 * s->desc->nb_components;
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int bxmin = s->xmin * 2 * s->desc->nb_components;
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int i, x, buf_size = s->buf_size;
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line_offset = AV_RL64(s->table + jobnr * 8);
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// Check if the buffer has the required bytes needed from the offset
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if (line_offset > buf_size - 8)
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return AVERROR_INVALIDDATA;
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src = buf + line_offset + 8;
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line = AV_RL32(src - 8);
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if (line < s->ymin || line > s->ymax)
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return AVERROR_INVALIDDATA;
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data_size = AV_RL32(src - 4);
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if (data_size <= 0 || data_size > buf_size)
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return AVERROR_INVALIDDATA;
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uncompressed_size = s->scan_line_size * FFMIN(s->scan_lines_per_block, s->ymax - line + 1);
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if ((s->compr == EXR_RAW && (data_size != uncompressed_size ||
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line_offset > buf_size - uncompressed_size)) ||
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(s->compr != EXR_RAW && line_offset > buf_size - data_size)) {
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return AVERROR_INVALIDDATA;
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}
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if (data_size < uncompressed_size) {
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av_fast_padded_malloc(&td->uncompressed_data, &td->uncompressed_size, uncompressed_size);
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av_fast_padded_malloc(&td->tmp, &td->tmp_size, uncompressed_size);
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if (!td->uncompressed_data || !td->tmp)
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return AVERROR(ENOMEM);
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}
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if ((s->compr == EXR_ZIP1 || s->compr == EXR_ZIP16) && data_size < uncompressed_size) {
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unsigned long dest_len = uncompressed_size;
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if (uncompress(td->tmp, &dest_len, src, data_size) != Z_OK ||
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dest_len != uncompressed_size) {
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av_log(avctx, AV_LOG_ERROR, "error during zlib decompression\n");
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return AVERROR(EINVAL);
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}
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} else if (s->compr == EXR_RLE && data_size < uncompressed_size) {
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if (rle_uncompress(src, data_size, td->tmp, uncompressed_size)) {
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av_log(avctx, AV_LOG_ERROR, "error during rle decompression\n");
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return AVERROR(EINVAL);
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}
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}
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if (s->compr != EXR_RAW && data_size < uncompressed_size) {
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predictor(td->tmp, uncompressed_size);
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reorder_pixels(td->tmp, td->uncompressed_data, uncompressed_size);
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channel_buffer[0] = td->uncompressed_data + xdelta * s->channel_offsets[0];
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channel_buffer[1] = td->uncompressed_data + xdelta * s->channel_offsets[1];
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channel_buffer[2] = td->uncompressed_data + xdelta * s->channel_offsets[2];
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if (s->channel_offsets[3] >= 0)
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channel_buffer[3] = td->uncompressed_data + xdelta * s->channel_offsets[3];
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} else {
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channel_buffer[0] = src + xdelta * s->channel_offsets[0];
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channel_buffer[1] = src + xdelta * s->channel_offsets[1];
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channel_buffer[2] = src + xdelta * s->channel_offsets[2];
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if (s->channel_offsets[3] >= 0)
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channel_buffer[3] = src + xdelta * s->channel_offsets[3];
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}
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ptr = p->data[0] + line * p->linesize[0];
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for (i = 0; i < s->scan_lines_per_block && line + i <= s->ymax; i++, ptr += p->linesize[0]) {
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const uint8_t *r, *g, *b, *a;
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r = channel_buffer[0];
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g = channel_buffer[1];
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b = channel_buffer[2];
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if (channel_buffer[3])
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a = channel_buffer[3];
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ptr_x = (uint16_t *)ptr;
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// Zero out the start if xmin is not 0
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memset(ptr_x, 0, bxmin);
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ptr_x += s->xmin * s->desc->nb_components;
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if (s->bits_per_color_id == 2) {
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// 32-bit
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for (x = 0; x < xdelta; x++) {
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*ptr_x++ = exr_flt2uint(bytestream_get_le32(&r));
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*ptr_x++ = exr_flt2uint(bytestream_get_le32(&g));
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*ptr_x++ = exr_flt2uint(bytestream_get_le32(&b));
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if (channel_buffer[3])
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*ptr_x++ = exr_flt2uint(bytestream_get_le32(&a));
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}
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} else {
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// 16-bit
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for (x = 0; x < xdelta; x++) {
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*ptr_x++ = exr_halflt2uint(bytestream_get_le16(&r));
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*ptr_x++ = exr_halflt2uint(bytestream_get_le16(&g));
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*ptr_x++ = exr_halflt2uint(bytestream_get_le16(&b));
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if (channel_buffer[3])
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*ptr_x++ = exr_halflt2uint(bytestream_get_le16(&a));
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}
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}
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// Zero out the end if xmax+1 is not w
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memset(ptr_x, 0, axmax);
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channel_buffer[0] += s->scan_line_size;
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channel_buffer[1] += s->scan_line_size;
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channel_buffer[2] += s->scan_line_size;
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if (channel_buffer[3])
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channel_buffer[3] += s->scan_line_size;
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}
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return 0;
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}
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static int decode_frame(AVCodecContext *avctx,
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void *data,
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int *got_frame,
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@ -227,38 +368,35 @@ static int decode_frame(AVCodecContext *avctx,
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const uint8_t *buf = avpkt->data;
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unsigned int buf_size = avpkt->size;
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const uint8_t *buf_end = buf + buf_size;
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const uint8_t *src;
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const AVPixFmtDescriptor *desc;
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EXRContext *const s = avctx->priv_data;
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AVFrame *picture = data;
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AVFrame *const p = &s->picture;
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uint8_t *ptr;
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int i, x, y, stride, magic_number, version, flags, ret;
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int i, y, magic_number, version, flags, ret;
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int w = 0;
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int h = 0;
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unsigned int xmin = ~0;
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unsigned int xmax = ~0;
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unsigned int ymin = ~0;
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unsigned int ymax = ~0;
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unsigned int xdelta = ~0;
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unsigned int ydelta = ~0;
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int out_line_size;
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int bxmin, axmax;
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int scan_lines_per_block;
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unsigned long scan_line_size;
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unsigned long uncompressed_size;
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int scan_line_blocks;
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unsigned int current_channel_offset = 0;
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s->xmin = ~0;
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s->xmax = ~0;
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s->ymin = ~0;
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s->ymax = ~0;
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s->xdelta = ~0;
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s->ydelta = ~0;
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s->channel_offsets[0] = -1;
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s->channel_offsets[1] = -1;
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s->channel_offsets[2] = -1;
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s->channel_offsets[3] = -1;
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s->bits_per_color_id = -1;
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s->compr = -1;
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s->buf = buf;
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s->buf_size = buf_size;
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if (buf_size < 10) {
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av_log(avctx, AV_LOG_ERROR, "Too short header to parse\n");
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@ -356,12 +494,12 @@ static int decode_frame(AVCodecContext *avctx,
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if (!variable_buffer_data_size)
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return AVERROR_INVALIDDATA;
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xmin = AV_RL32(buf);
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ymin = AV_RL32(buf + 4);
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xmax = AV_RL32(buf + 8);
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ymax = AV_RL32(buf + 12);
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xdelta = (xmax-xmin) + 1;
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ydelta = (ymax-ymin) + 1;
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s->xmin = AV_RL32(buf);
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s->ymin = AV_RL32(buf + 4);
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s->xmax = AV_RL32(buf + 8);
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s->ymax = AV_RL32(buf + 12);
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s->xdelta = (s->xmax - s->xmin) + 1;
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s->ydelta = (s->ymax - s->ymin) + 1;
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buf += variable_buffer_data_size;
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continue;
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@ -464,10 +602,10 @@ static int decode_frame(AVCodecContext *avctx,
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case EXR_RAW:
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case EXR_RLE:
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case EXR_ZIP1:
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scan_lines_per_block = 1;
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s->scan_lines_per_block = 1;
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break;
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case EXR_ZIP16:
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scan_lines_per_block = 16;
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s->scan_lines_per_block = 16;
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break;
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default:
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av_log(avctx, AV_LOG_ERROR, "Compression type %d is not supported\n", s->compr);
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@ -480,7 +618,10 @@ static int decode_frame(AVCodecContext *avctx,
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return AVERROR_INVALIDDATA;
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// Verify the xmin, xmax, ymin, ymax and xdelta before setting the actual image size
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if (xmin > xmax || ymin > ymax || xdelta != xmax - xmin + 1 || xmax >= w || ymax >= h) {
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if (s->xmin > s->xmax ||
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s->ymin > s->ymax ||
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s->xdelta != s->xmax - s->xmin + 1 ||
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s->xmax >= w || s->ymax >= h) {
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av_log(avctx, AV_LOG_ERROR, "Wrong sizing or missing size information\n");
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return AVERROR_INVALIDDATA;
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}
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@ -489,18 +630,24 @@ static int decode_frame(AVCodecContext *avctx,
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avcodec_set_dimensions(avctx, w, h);
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}
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desc = av_pix_fmt_desc_get(avctx->pix_fmt);
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bxmin = xmin * 2 * desc->nb_components;
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axmax = (avctx->width - (xmax + 1)) * 2 * desc->nb_components;
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out_line_size = avctx->width * 2 * desc->nb_components;
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scan_line_size = xdelta * current_channel_offset;
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uncompressed_size = scan_line_size * scan_lines_per_block;
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s->desc = av_pix_fmt_desc_get(avctx->pix_fmt);
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out_line_size = avctx->width * 2 * s->desc->nb_components;
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s->scan_line_size = s->xdelta * current_channel_offset;
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scan_line_blocks = (s->ydelta + s->scan_lines_per_block - 1) / s->scan_lines_per_block;
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if (s->compr != EXR_RAW) {
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av_fast_padded_malloc(&s->uncompressed_data, &s->uncompressed_size, uncompressed_size);
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av_fast_padded_malloc(&s->tmp, &s->tmp_size, uncompressed_size);
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if (!s->uncompressed_data || !s->tmp)
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int thread_data_size, prev_size;
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EXRThreadData *m;
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prev_size = s->thread_data_size;
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if (av_size_mult(avctx->thread_count, sizeof(EXRThreadData), &thread_data_size))
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return AVERROR(EINVAL);
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m = av_fast_realloc(s->thread_data, &s->thread_data_size, thread_data_size);
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if (!m)
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return AVERROR(ENOMEM);
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s->thread_data = m;
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memset(s->thread_data + prev_size, 0, s->thread_data_size - prev_size);
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}
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if ((ret = ff_thread_get_buffer(avctx, p)) < 0) {
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@ -508,128 +655,23 @@ static int decode_frame(AVCodecContext *avctx,
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return ret;
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}
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ptr = p->data[0];
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stride = p->linesize[0];
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if (buf_end - buf < scan_line_blocks * 8)
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return AVERROR_INVALIDDATA;
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s->table = buf;
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ptr = p->data[0];
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// Zero out the start if ymin is not 0
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for (y = 0; y < ymin; y++) {
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for (y = 0; y < s->ymin; y++) {
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memset(ptr, 0, out_line_size);
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ptr += stride;
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ptr += p->linesize[0];
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}
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if (buf_end - buf < (ydelta + scan_lines_per_block - 1) / scan_lines_per_block * 8)
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return AVERROR_INVALIDDATA;
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// Process the actual scan line blocks
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for (y = ymin; y <= ymax; y += scan_lines_per_block) {
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uint16_t *ptr_x;
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const uint8_t *channel_buffer[4] = { 0 };
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const uint64_t line_offset = bytestream_get_le64(&buf);
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int32_t data_size, line;
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// Check if the buffer has the required bytes needed from the offset
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if (line_offset > (uint64_t)buf_size - 8)
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return AVERROR_INVALIDDATA;
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src = avpkt->data + line_offset + 8;
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line = AV_RL32(src - 8);
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if (line < ymin || line > ymax)
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return AVERROR_INVALIDDATA;
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data_size = AV_RL32(src - 4);
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if (data_size <= 0 || data_size > buf_size)
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return AVERROR_INVALIDDATA;
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if ((s->compr == EXR_RAW && (data_size != uncompressed_size ||
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line_offset > buf_size - uncompressed_size)) ||
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(s->compr != EXR_RAW && line_offset > buf_size - data_size)) {
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return AVERROR_INVALIDDATA;
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}
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if (scan_lines_per_block > 1)
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uncompressed_size = scan_line_size * FFMIN(scan_lines_per_block, ymax - y + 1);
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if ((s->compr == EXR_ZIP1 || s->compr == EXR_ZIP16) && data_size < uncompressed_size) {
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unsigned long dest_len = uncompressed_size;
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if (uncompress(s->tmp, &dest_len, src, data_size) != Z_OK ||
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dest_len != uncompressed_size) {
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av_log(avctx, AV_LOG_ERROR, "error during zlib decompression\n");
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return AVERROR(EINVAL);
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}
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} else if (s->compr == EXR_RLE && data_size < uncompressed_size) {
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if (rle_uncompress(src, data_size, s->tmp, uncompressed_size)) {
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av_log(avctx, AV_LOG_ERROR, "error during rle decompression\n");
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return AVERROR(EINVAL);
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}
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}
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if (s->compr != EXR_RAW && data_size < uncompressed_size) {
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predictor(s->tmp, uncompressed_size);
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reorder_pixels(s->tmp, s->uncompressed_data, uncompressed_size);
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channel_buffer[0] = s->uncompressed_data + xdelta * s->channel_offsets[0];
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channel_buffer[1] = s->uncompressed_data + xdelta * s->channel_offsets[1];
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channel_buffer[2] = s->uncompressed_data + xdelta * s->channel_offsets[2];
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if (s->channel_offsets[3] >= 0)
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channel_buffer[3] = s->uncompressed_data + xdelta * s->channel_offsets[3];
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} else {
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channel_buffer[0] = src + xdelta * s->channel_offsets[0];
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channel_buffer[1] = src + xdelta * s->channel_offsets[1];
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channel_buffer[2] = src + xdelta * s->channel_offsets[2];
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if (s->channel_offsets[3] >= 0)
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channel_buffer[3] = src + xdelta * s->channel_offsets[3];
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}
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ptr = p->data[0] + line * stride;
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for (i = 0; i < scan_lines_per_block && y + i <= ymax; i++, ptr += stride) {
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const uint8_t *r, *g, *b, *a;
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r = channel_buffer[0];
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g = channel_buffer[1];
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b = channel_buffer[2];
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if (channel_buffer[3])
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a = channel_buffer[3];
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ptr_x = (uint16_t *)ptr;
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// Zero out the start if xmin is not 0
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memset(ptr_x, 0, bxmin);
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ptr_x += xmin * desc->nb_components;
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if (s->bits_per_color_id == 2) {
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// 32-bit
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for (x = 0; x < xdelta; x++) {
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*ptr_x++ = exr_flt2uint(bytestream_get_le32(&r));
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*ptr_x++ = exr_flt2uint(bytestream_get_le32(&g));
|
||||
*ptr_x++ = exr_flt2uint(bytestream_get_le32(&b));
|
||||
if (channel_buffer[3])
|
||||
*ptr_x++ = exr_flt2uint(bytestream_get_le32(&a));
|
||||
}
|
||||
} else {
|
||||
// 16-bit
|
||||
for (x = 0; x < xdelta; x++) {
|
||||
*ptr_x++ = exr_halflt2uint(bytestream_get_le16(&r));
|
||||
*ptr_x++ = exr_halflt2uint(bytestream_get_le16(&g));
|
||||
*ptr_x++ = exr_halflt2uint(bytestream_get_le16(&b));
|
||||
if (channel_buffer[3])
|
||||
*ptr_x++ = exr_halflt2uint(bytestream_get_le16(&a));
|
||||
}
|
||||
}
|
||||
|
||||
// Zero out the end if xmax+1 is not w
|
||||
memset(ptr_x, 0, axmax);
|
||||
|
||||
channel_buffer[0] += scan_line_size;
|
||||
channel_buffer[1] += scan_line_size;
|
||||
channel_buffer[2] += scan_line_size;
|
||||
if (channel_buffer[3])
|
||||
channel_buffer[3] += scan_line_size;
|
||||
}
|
||||
}
|
||||
avctx->execute2(avctx, decode_block, s->thread_data, NULL, scan_line_blocks);
|
||||
|
||||
// Zero out the end if ymax+1 is not h
|
||||
for (y = ymax + 1; y < avctx->height; y++) {
|
||||
for (y = s->ymax + 1; y < avctx->height; y++) {
|
||||
memset(ptr, 0, out_line_size);
|
||||
ptr += stride;
|
||||
ptr += p->linesize[0];
|
||||
}
|
||||
|
||||
*picture = s->picture;
|
||||
@ -651,12 +693,19 @@ static av_cold int decode_init(AVCodecContext *avctx)
|
||||
static av_cold int decode_end(AVCodecContext *avctx)
|
||||
{
|
||||
EXRContext *s = avctx->priv_data;
|
||||
int i;
|
||||
|
||||
if (s->picture.data[0])
|
||||
avctx->release_buffer(avctx, &s->picture);
|
||||
|
||||
av_freep(&s->uncompressed_data);
|
||||
av_freep(&s->tmp);
|
||||
for (i = 0; i < s->thread_data_size / sizeof(EXRThreadData); i++) {
|
||||
EXRThreadData *td = &s->thread_data[i];
|
||||
av_free(td->uncompressed_data);
|
||||
av_free(td->tmp);
|
||||
}
|
||||
|
||||
av_freep(&s->thread_data);
|
||||
s->thread_data_size = 0;
|
||||
|
||||
return 0;
|
||||
}
|
||||
@ -669,6 +718,6 @@ AVCodec ff_exr_decoder = {
|
||||
.init = decode_init,
|
||||
.close = decode_end,
|
||||
.decode = decode_frame,
|
||||
.capabilities = CODEC_CAP_DR1 | CODEC_CAP_FRAME_THREADS,
|
||||
.capabilities = CODEC_CAP_DR1 | CODEC_CAP_FRAME_THREADS | CODEC_CAP_SLICE_THREADS,
|
||||
.long_name = NULL_IF_CONFIG_SMALL("OpenEXR image"),
|
||||
};
|
||||
|
||||
Loading…
Reference in New Issue
Block a user