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ffmpeg.wasm-core
Commit 4db4b53d authored by Kostya Shishkov's avatar Kostya Shishkov
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proresenc: give user a possibility to alter some encoding parameters 

This allows user to select quantisation matrix from different profile,
stamp frames with custom vendor string and change target bitrate.
parent 1ba08c94
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Showing with 122 additions and 56 deletions
libavcodec/proresenc.c
View file @ 4db4b53d
......@@ -42,6 +42,67 @@ enum {
PRORES_PROFILE_HQ,
};
enum {
QUANT_MAT_PROXY = 0,
QUANT_MAT_LT,
QUANT_MAT_STANDARD,
QUANT_MAT_HQ,
QUANT_MAT_DEFAULT,
};
static const uint8_t prores_quant_matrices[][64] = {
{ // proxy
4, 7, 9, 11, 13, 14, 15, 63,
7, 7, 11, 12, 14, 15, 63, 63,
9, 11, 13, 14, 15, 63, 63, 63,
11, 11, 13, 14, 63, 63, 63, 63,
11, 13, 14, 63, 63, 63, 63, 63,
13, 14, 63, 63, 63, 63, 63, 63,
13, 63, 63, 63, 63, 63, 63, 63,
63, 63, 63, 63, 63, 63, 63, 63,
},
{ // LT
4, 5, 6, 7, 9, 11, 13, 15,
5, 5, 7, 8, 11, 13, 15, 17,
6, 7, 9, 11, 13, 15, 15, 17,
7, 7, 9, 11, 13, 15, 17, 19,
7, 9, 11, 13, 14, 16, 19, 23,
9, 11, 13, 14, 16, 19, 23, 29,
9, 11, 13, 15, 17, 21, 28, 35,
11, 13, 16, 17, 21, 28, 35, 41,
},
{ // standard
4, 4, 5, 5, 6, 7, 7, 9,
4, 4, 5, 6, 7, 7, 9, 9,
5, 5, 6, 7, 7, 9, 9, 10,
5, 5, 6, 7, 7, 9, 9, 10,
5, 6, 7, 7, 8, 9, 10, 12,
6, 7, 7, 8, 9, 10, 12, 15,
6, 7, 7, 9, 10, 11, 14, 17,
7, 7, 9, 10, 11, 14, 17, 21,
},
{ // high quality
4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 4, 4, 4, 4, 4, 5,
4, 4, 4, 4, 4, 4, 5, 5,
4, 4, 4, 4, 4, 5, 5, 6,
4, 4, 4, 4, 5, 5, 6, 7,
4, 4, 4, 4, 5, 6, 7, 7,
},
{ // codec default
4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 4, 4, 4, 4, 4, 4,
},
};
#define NUM_MB_LIMITS 4
static const int prores_mb_limits[NUM_MB_LIMITS] = {
1620, // up to 720x576
......@@ -56,7 +117,7 @@ static const struct prores_profile {
int min_quant;
int max_quant;
int br_tab[NUM_MB_LIMITS];
uint8_t quant[64];
int quant;
} prores_profile_info[4] = {
{
.full_name = "proxy",
......@@ -64,16 +125,7 @@ static const struct prores_profile {
.min_quant = 4,
.max_quant = 8,
.br_tab = { 300, 242, 220, 194 },
.quant = {
4, 7, 9, 11, 13, 14, 15, 63,
7, 7, 11, 12, 14, 15, 63, 63,
9, 11, 13, 14, 15, 63, 63, 63,
11, 11, 13, 14, 63, 63, 63, 63,
11, 13, 14, 63, 63, 63, 63, 63,
13, 14, 63, 63, 63, 63, 63, 63,
13, 63, 63, 63, 63, 63, 63, 63,
63, 63, 63, 63, 63, 63, 63, 63,
},
.quant = QUANT_MAT_PROXY,
},
{
.full_name = "LT",
......@@ -81,16 +133,7 @@ static const struct prores_profile {
.min_quant = 1,
.max_quant = 9,
.br_tab = { 720, 560, 490, 440 },
.quant = {
4, 5, 6, 7, 9, 11, 13, 15,
5, 5, 7, 8, 11, 13, 15, 17,
6, 7, 9, 11, 13, 15, 15, 17,
7, 7, 9, 11, 13, 15, 17, 19,
7, 9, 11, 13, 14, 16, 19, 23,
9, 11, 13, 14, 16, 19, 23, 29,
9, 11, 13, 15, 17, 21, 28, 35,
11, 13, 16, 17, 21, 28, 35, 41,
},
.quant = QUANT_MAT_LT,
},
{
.full_name = "standard",
......@@ -98,16 +141,7 @@ static const struct prores_profile {
.min_quant = 1,
.max_quant = 6,
.br_tab = { 1050, 808, 710, 632 },
.quant = {
4, 4, 5, 5, 6, 7, 7, 9,
4, 4, 5, 6, 7, 7, 9, 9,
5, 5, 6, 7, 7, 9, 9, 10,
5, 5, 6, 7, 7, 9, 9, 10,
5, 6, 7, 7, 8, 9, 10, 12,
6, 7, 7, 8, 9, 10, 12, 15,
6, 7, 7, 9, 10, 11, 14, 17,
7, 7, 9, 10, 11, 14, 17, 21,
},
.quant = QUANT_MAT_STANDARD,
},
{
.full_name = "high quality",
......@@ -115,16 +149,7 @@ static const struct prores_profile {
.min_quant = 1,
.max_quant = 6,
.br_tab = { 1566, 1216, 1070, 950 },
.quant = {
4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 4, 4, 4, 4, 4, 5,
4, 4, 4, 4, 4, 4, 5, 5,
4, 4, 4, 4, 4, 5, 5, 6,
4, 4, 4, 4, 5, 5, 6, 7,
4, 4, 4, 4, 5, 6, 7, 7,
},
.quant = QUANT_MAT_HQ,
}
// for 4444 profile bitrate numbers are { 2350, 1828, 1600, 1425 }
};
......@@ -147,6 +172,7 @@ typedef struct ProresContext {
DECLARE_ALIGNED(16, uint16_t, emu_buf)[16*16];
int16_t quants[MAX_STORED_Q][64];
int16_t custom_q[64];
const uint8_t *quant_mat;
ProresDSPContext dsp;
ScanTable scantable;
......@@ -159,6 +185,9 @@ typedef struct ProresContext {
int num_planes;
int bits_per_mb;
char *vendor;
int quant_sel;
int frame_size;
int profile;
......@@ -373,7 +402,7 @@ static int encode_slice(AVCodecContext *avctx, const AVFrame *pic,
} else {
qmat = ctx->custom_q;
for (i = 0; i < 64; i++)
qmat[i] = ctx->profile_info->quant[i] * quant;
qmat[i] = ctx->quant_mat[i] * quant;
}
for (i = 0; i < ctx->num_planes; i++) {
......@@ -591,7 +620,7 @@ static int find_slice_quant(AVCodecContext *avctx, const AVFrame *pic,
} else {
qmat = ctx->custom_q;
for (i = 0; i < 64; i++)
qmat[i] = ctx->profile_info->quant[i] * q;
qmat[i] = ctx->quant_mat[i] * q;
}
for (i = 0; i < ctx->num_planes; i++) {
bits += estimate_slice_plane(ctx, &error, i,
......@@ -684,7 +713,7 @@ static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
tmp = buf;
buf += 2; // frame header size will be stored here
bytestream_put_be16 (&buf, 0); // version 1
bytestream_put_buffer(&buf, "Lavc", 4); // creator
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
......@@ -694,13 +723,17 @@ static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
bytestream_put_byte (&buf, avctx->colorspace);
bytestream_put_byte (&buf, 0x40); // source format and alpha information
bytestream_put_byte (&buf, 0); // reserved
bytestream_put_byte (&buf, 0x03); // matrix flags - both matrices are present
// luma quantisation matrix
for (i = 0; i < 64; i++)
bytestream_put_byte(&buf, ctx->profile_info->quant[i]);
// chroma quantisation matrix
for (i = 0; i < 64; i++)
bytestream_put_byte(&buf, ctx->profile_info->quant[i]);
if (ctx->quant_sel != QUANT_MAT_DEFAULT) {
bytestream_put_byte (&buf, 0x03); // matrix flags - both matrices are present
// luma quantisation matrix
for (i = 0; i < 64; i++)
bytestream_put_byte(&buf, ctx->quant_mat[i]);
// chroma quantisation matrix
for (i = 0; i < 64; i++)
bytestream_put_byte(&buf, ctx->quant_mat[i]);
} else {
bytestream_put_byte (&buf, 0x00); // matrix flags - default matrices are used
}
bytestream_put_be16 (&tmp, buf - orig_buf); // write back frame header size
// picture header
......@@ -816,10 +849,25 @@ static av_cold int encode_init(AVCodecContext *avctx)
ctx->slices_width += av_popcount(ctx->mb_width - ctx->slices_width * mps);
ctx->num_slices = ctx->mb_height * ctx->slices_width;
for (i = 0; i < NUM_MB_LIMITS - 1; i++)
if (prores_mb_limits[i] >= ctx->mb_width * ctx->mb_height)
break;
ctx->bits_per_mb = ctx->profile_info->br_tab[i];
if (ctx->quant_sel == -1)
ctx->quant_mat = prores_quant_matrices[ctx->profile_info->quant];
else
ctx->quant_mat = prores_quant_matrices[ctx->quant_sel];
if (strlen(ctx->vendor) != 4) {
av_log(avctx, AV_LOG_ERROR, "vendor ID should be 4 bytes\n");
return AVERROR_INVALIDDATA;
}
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)
break;
ctx->bits_per_mb = ctx->profile_info->br_tab[i];
} else if (ctx->bits_per_mb < 128) {
av_log(avctx, AV_LOG_ERROR, "too few bits per MB, please set at least 128\n");
return AVERROR_INVALIDDATA;
}
ctx->frame_size = ctx->num_slices * (2 + 2 * ctx->num_planes
+ (2 * mps * ctx->bits_per_mb) / 8)
......@@ -829,7 +877,7 @@ static av_cold int encode_init(AVCodecContext *avctx)
max_quant = ctx->profile_info->max_quant;
for (i = min_quant; i < MAX_STORED_Q; i++) {
for (j = 0; j < 64; j++)
ctx->quants[i][j] = ctx->profile_info->quant[j] * i;
ctx->quants[i][j] = ctx->quant_mat[j] * i;
}
avctx->codec_tag = ctx->profile_info->tag;
......@@ -877,6 +925,24 @@ static const AVOption options[] = {
0, 0, VE, "profile" },
{ "hq", NULL, 0, AV_OPT_TYPE_CONST, { PRORES_PROFILE_HQ },
0, 0, VE, "profile" },
{ "vendor", "vendor ID", OFFSET(vendor),
AV_OPT_TYPE_STRING, { .str = "Lavc" }, CHAR_MIN, CHAR_MAX, VE },
{ "bits_per_mb", "desired bits per macroblock", OFFSET(bits_per_mb),
AV_OPT_TYPE_INT, { 0 }, 0, 8192, VE },
{ "quant_mat", "quantiser matrix", OFFSET(quant_sel), AV_OPT_TYPE_INT,
{ -1 }, -1, QUANT_MAT_DEFAULT, VE, "quant_mat" },
{ "auto", NULL, 0, AV_OPT_TYPE_CONST, { -1 },
0, 0, VE, "quant_mat" },
{ "proxy", NULL, 0, AV_OPT_TYPE_CONST, { QUANT_MAT_PROXY },
0, 0, VE, "quant_mat" },
{ "lt", NULL, 0, AV_OPT_TYPE_CONST, { QUANT_MAT_LT },
0, 0, VE, "quant_mat" },
{ "standard", NULL, 0, AV_OPT_TYPE_CONST, { QUANT_MAT_STANDARD },
0, 0, VE, "quant_mat" },
{ "hq", NULL, 0, AV_OPT_TYPE_CONST, { QUANT_MAT_HQ },
0, 0, VE, "quant_mat" },
{ "default", NULL, 0, AV_OPT_TYPE_CONST, { QUANT_MAT_DEFAULT },
0, 0, VE, "quant_mat" },
{ NULL }
};
......
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