xenia-project/FFmpeg
1
0
Fork 0
mirror of https://github.com/xenia-project/FFmpeg.git synced 2024-11-24 12:09:55 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

prores: interlaced ProRes encoding

Browse Source 
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
This commit is contained in:
Maksalov Boris 2012-08-03 19:50:05 +02:00 committed by Luca Barbato
parent 0d230e9312
commit c0f4cf7798
1 changed files with 115 additions and 68 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

183
libavcodec/proresenc.c
View File

@ -188,7 +188,9 @@ typedef struct ProresContext {
int mbs_per_slice;
int num_chroma_blocks, chroma_factor;
int slices_width;
int num_slices;
int slices_per_picture;
int pictures_per_frame; // 1 for progressive, 2 for interlaced
int cur_picture_idx;
int num_planes;
int bits_per_mb;
int force_quant;
@ -196,7 +198,7 @@ typedef struct ProresContext {
char *vendor;
int quant_sel;
int frame_size;
int frame_size_upper_bound;
int profile;
const struct prores_profile *profile_info;
@ -402,10 +404,15 @@ static int encode_slice(AVCodecContext *avctx, const AVFrame *pic,
int total_size = 0;
const uint16_t *src;
int slice_width_factor = av_log2(mbs_per_slice);
int num_cblocks, pwidth;
int num_cblocks, pwidth, linesize, line_add;
int plane_factor, is_chroma;
uint16_t *qmat;
if (ctx->pictures_per_frame == 1)
line_add = 0;
else
line_add = ctx->cur_picture_idx ^ !pic->top_field_first;
if (ctx->force_quant) {
qmat = ctx->quants[0];
} else if (quant < MAX_STORED_Q) {
@ -432,12 +439,16 @@ static int encode_slice(AVCodecContext *avctx, const AVFrame *pic,
num_cblocks = 2;
pwidth = avctx->width >> 1;
}
src = (const uint16_t*)(pic->data[i] + yp * pic->linesize[i]) + xp;
get_slice_data(ctx, src, pic->linesize[i], xp, yp,
pwidth, avctx->height, ctx->blocks[0], ctx->emu_buf,
linesize = pic->linesize[i] * ctx->pictures_per_frame;
src = (const uint16_t*)(pic->data[i] + yp * linesize +
line_add * pic->linesize[i]) + xp;
get_slice_data(ctx, src, linesize, xp, yp,
pwidth, avctx->height / ctx->pictures_per_frame,
ctx->blocks[0], ctx->emu_buf,
mbs_per_slice, num_cblocks, is_chroma);
sizes[i] = encode_slice_plane(ctx, pb, src, pic->linesize[i],
sizes[i] = encode_slice_plane(ctx, pb, src, linesize,
mbs_per_slice, ctx->blocks[0],
num_cblocks, plane_factor,
qmat);
@ -570,7 +581,12 @@ static int find_slice_quant(AVCodecContext *avctx, const AVFrame *pic,
int slice_bits[TRELLIS_WIDTH], slice_score[TRELLIS_WIDTH];
int overquant;
uint16_t *qmat;
int linesize[4], line_add;
if (ctx->pictures_per_frame == 1)
line_add = 0;
else
line_add = ctx->cur_picture_idx ^ !pic->top_field_first;
mbs = x + mbs_per_slice;
for (i = 0; i < ctx->num_planes; i++) {
@ -589,10 +605,14 @@ static int find_slice_quant(AVCodecContext *avctx, const AVFrame *pic,
num_cblocks[i] = 2;
pwidth = avctx->width >> 1;
}
src = (const uint16_t*)(pic->data[i] + yp * pic->linesize[i]) + xp;
get_slice_data(ctx, src, pic->linesize[i], xp, yp,
pwidth, avctx->height, td->blocks[i], td->emu_buf,
linesize[i] = pic->linesize[i] * ctx->pictures_per_frame;
src = (const uint16_t*)(pic->data[i] + yp * linesize[i] +
line_add * pic->linesize[i]) + xp;
get_slice_data(ctx, src, linesize[i], xp, yp,
pwidth, avctx->height / ctx->pictures_per_frame,
td->blocks[i], td->emu_buf,
mbs_per_slice, num_cblocks[i], is_chroma[i]);
}
@ -607,7 +627,7 @@ static int find_slice_quant(AVCodecContext *avctx, const AVFrame *pic,
error = 0;
for (i = 0; i < ctx->num_planes; i++) {
bits += estimate_slice_plane(ctx, &error, i,
src, pic->linesize[i],
src, linesize[i],
mbs_per_slice,
num_cblocks[i], plane_factor[i],
ctx->quants[q], td);
@ -636,7 +656,7 @@ static int find_slice_quant(AVCodecContext *avctx, const AVFrame *pic,
}
for (i = 0; i < ctx->num_planes; i++) {
bits += estimate_slice_plane(ctx, &error, i,
src, pic->linesize[i],
src, linesize[i],
mbs_per_slice,
num_cblocks[i], plane_factor[i],
qmat, td);
@ -725,12 +745,13 @@ static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
int slice_hdr_size = 2 + 2 * (ctx->num_planes - 1);
int frame_size, picture_size, slice_size;
int pkt_size, ret;
uint8_t frame_flags;
*avctx->coded_frame = *pic;
avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I;
avctx->coded_frame->key_frame = 1;
pkt_size = ctx->frame_size + FF_MIN_BUFFER_SIZE;
pkt_size = ctx->frame_size_upper_bound + FF_MIN_BUFFER_SIZE;
if ((ret = ff_alloc_packet(pkt, pkt_size)) < 0) {
av_log(avctx, AV_LOG_ERROR, "Error getting output packet.\n");
@ -751,7 +772,12 @@ static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
bytestream_put_buffer(&buf, ctx->vendor, 4);
bytestream_put_be16 (&buf, avctx->width);
bytestream_put_be16 (&buf, avctx->height);
bytestream_put_byte (&buf, ctx->chroma_factor << 6); // frame flags
frame_flags = ctx->chroma_factor << 6;
if (avctx->flags & CODEC_FLAG_INTERLACED_DCT)
frame_flags |= pic->top_field_first ? 0x04 : 0x08;
bytestream_put_byte (&buf, frame_flags);
bytestream_put_byte (&buf, 0); // reserved
bytestream_put_byte (&buf, avctx->color_primaries);
bytestream_put_byte (&buf, avctx->color_trc);
@ -771,56 +797,64 @@ static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
}
bytestream_put_be16 (&tmp, buf - orig_buf); // write back frame header size
// picture header
picture_size_pos = buf + 1;
bytestream_put_byte (&buf, 0x40); // picture header size (in bits)
buf += 4; // picture data size will be stored here
bytestream_put_be16 (&buf, ctx->num_slices); // total number of slices
bytestream_put_byte (&buf, av_log2(ctx->mbs_per_slice) << 4); // slice width and height in MBs
for (ctx->cur_picture_idx = 0;
ctx->cur_picture_idx < ctx->pictures_per_frame;
ctx->cur_picture_idx++) {
// picture header
picture_size_pos = buf + 1;
bytestream_put_byte (&buf, 0x40); // picture header size (in bits)
buf += 4; // picture data size will be stored here
bytestream_put_be16 (&buf, ctx->slices_per_picture);
bytestream_put_byte (&buf, av_log2(ctx->mbs_per_slice) << 4); // slice width and height in MBs
// seek table - will be filled during slice encoding
slice_sizes = buf;
buf += ctx->num_slices * 2;
// seek table - will be filled during slice encoding
slice_sizes = buf;
buf += ctx->slices_per_picture * 2;
// slices
if (!ctx->force_quant) {
ret = avctx->execute2(avctx, find_quant_thread, NULL, NULL,
ctx->mb_height);
if (ret)
return ret;
}
for (y = 0; y < ctx->mb_height; y++) {
int mbs_per_slice = ctx->mbs_per_slice;
for (x = mb = 0; x < ctx->mb_width; x += mbs_per_slice, mb++) {
q = ctx->force_quant ? ctx->force_quant
: ctx->slice_q[mb + y * ctx->slices_width];
while (ctx->mb_width - x < mbs_per_slice)
mbs_per_slice >>= 1;
bytestream_put_byte(&buf, slice_hdr_size << 3);
slice_hdr = buf;
buf += slice_hdr_size - 1;
init_put_bits(&pb, buf, (pkt_size - (buf - orig_buf)) * 8);
encode_slice(avctx, pic, &pb, sizes, x, y, q, mbs_per_slice);
bytestream_put_byte(&slice_hdr, q);
slice_size = slice_hdr_size + sizes[ctx->num_planes - 1];
for (i = 0; i < ctx->num_planes - 1; i++) {
bytestream_put_be16(&slice_hdr, sizes[i]);
slice_size += sizes[i];
}
bytestream_put_be16(&slice_sizes, slice_size);
buf += slice_size - slice_hdr_size;
// slices
if (!ctx->force_quant) {
ret = avctx->execute2(avctx, find_quant_thread, NULL, NULL,
ctx->mb_height);
if (ret)
return ret;
}
for (y = 0; y < ctx->mb_height; y++) {
int mbs_per_slice = ctx->mbs_per_slice;
for (x = mb = 0; x < ctx->mb_width; x += mbs_per_slice, mb++) {
q = ctx->force_quant ? ctx->force_quant
: ctx->slice_q[mb + y * ctx->slices_width];
while (ctx->mb_width - x < mbs_per_slice)
mbs_per_slice >>= 1;
bytestream_put_byte(&buf, slice_hdr_size << 3);
slice_hdr = buf;
buf += slice_hdr_size - 1;
init_put_bits(&pb, buf, (pkt_size - (buf - orig_buf)) * 8);
encode_slice(avctx, pic, &pb, sizes, x, y, q, mbs_per_slice);
bytestream_put_byte(&slice_hdr, q);
slice_size = slice_hdr_size + sizes[ctx->num_planes - 1];
for (i = 0; i < ctx->num_planes - 1; i++) {
bytestream_put_be16(&slice_hdr, sizes[i]);
slice_size += sizes[i];
}
bytestream_put_be16(&slice_sizes, slice_size);
buf += slice_size - slice_hdr_size;
}
}
if (ctx->pictures_per_frame == 1)
picture_size = buf - picture_size_pos - 6;
else
picture_size = buf - picture_size_pos + 1;
bytestream_put_be32(&picture_size_pos, picture_size);
}
orig_buf -= 8;
frame_size = buf - orig_buf;
picture_size = buf - picture_size_pos - 6;
bytestream_put_be32(&orig_buf, frame_size);
bytestream_put_be32(&picture_size_pos, picture_size);
pkt->size = frame_size;
pkt->flags |= AV_PKT_FLAG_KEY;
@ -855,6 +889,7 @@ static av_cold int encode_init(AVCodecContext *avctx)
int mps;
int i, j;
int min_quant, max_quant;
int interlaced = !!(avctx->flags & CODEC_FLAG_INTERLACED_DCT);
avctx->bits_per_raw_sample = 10;
avctx->coded_frame = avcodec_alloc_frame();
@ -863,7 +898,8 @@ static av_cold int encode_init(AVCodecContext *avctx)
ff_proresdsp_init(&ctx->dsp);
ff_init_scantable(ctx->dsp.dct_permutation, &ctx->scantable,
ff_prores_progressive_scan);
interlaced ? ff_prores_interlaced_scan
: ff_prores_progressive_scan);
mps = ctx->mbs_per_slice;
if (mps & (mps - 1)) {
@ -879,10 +915,16 @@ static av_cold int encode_init(AVCodecContext *avctx)
ctx->num_planes = 3;
ctx->mb_width = FFALIGN(avctx->width, 16) >> 4;
ctx->mb_height = FFALIGN(avctx->height, 16) >> 4;
if (interlaced)
ctx->mb_height = FFALIGN(avctx->height, 32) >> 5;
else
ctx->mb_height = FFALIGN(avctx->height, 16) >> 4;
ctx->slices_width = ctx->mb_width / mps;
ctx->slices_width += av_popcount(ctx->mb_width - ctx->slices_width * mps);
ctx->num_slices = ctx->mb_height * ctx->slices_width;
ctx->slices_per_picture = ctx->mb_height * ctx->slices_width;
ctx->pictures_per_frame = 1 + interlaced;
if (ctx->quant_sel == -1)
ctx->quant_mat = prores_quant_matrices[ctx->profile_info->quant];
@ -898,7 +940,8 @@ static av_cold int encode_init(AVCodecContext *avctx)
if (!ctx->force_quant) {
if (!ctx->bits_per_mb) {
for (i = 0; i < NUM_MB_LIMITS - 1; i++)
if (prores_mb_limits[i] >= ctx->mb_width * ctx->mb_height)
if (prores_mb_limits[i] >= ctx->mb_width * ctx->mb_height *
ctx->pictures_per_frame)
break;
ctx->bits_per_mb = ctx->profile_info->br_tab[i];
} else if (ctx->bits_per_mb < 128) {
@ -913,7 +956,7 @@ static av_cold int encode_init(AVCodecContext *avctx)
ctx->quants[i][j] = ctx->quant_mat[j] * i;
}
ctx->slice_q = av_malloc(ctx->num_slices * sizeof(*ctx->slice_q));
ctx->slice_q = av_malloc(ctx->slices_per_picture * sizeof(*ctx->slice_q));
if (!ctx->slice_q) {
encode_close(avctx);
return AVERROR(ENOMEM);
@ -959,16 +1002,20 @@ static av_cold int encode_init(AVCodecContext *avctx)
ctx->bits_per_mb += ls * 4;
}
ctx->frame_size = ctx->num_slices * (2 + 2 * ctx->num_planes
+ (2 * mps * ctx->bits_per_mb) / 8)
+ 200;
ctx->frame_size_upper_bound = ctx->pictures_per_frame *
ctx->slices_per_picture *
(2 + 2 * ctx->num_planes +
(mps * ctx->bits_per_mb) / 8)
+ 200;
avctx->codec_tag = ctx->profile_info->tag;
av_log(avctx, AV_LOG_DEBUG, "profile %d, %d slices, %d bits per MB\n",
ctx->profile, ctx->num_slices, ctx->bits_per_mb);
av_log(avctx, AV_LOG_DEBUG, "estimated frame size %d\n",
ctx->frame_size);
av_log(avctx, AV_LOG_DEBUG,
"profile %d, %d slices, interlacing: %s, %d bits per MB\n",
ctx->profile, ctx->slices_per_picture * ctx->pictures_per_frame,
interlaced ? "yes" : "no", ctx->bits_per_mb);
av_log(avctx, AV_LOG_DEBUG, "frame size upper bound: %d\n",
ctx->frame_size_upper_bound);
return 0;
}