/*
* Copyright (c) 2012 Intel Corporation. All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
* IN NO EVENT SHALL PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
/*
* Simple MPEG-2 encoder based on libVA.
*
*/
#include "sysdeps.h"
#include <getopt.h>
#include <unistd.h>
#include <sys/time.h>
#include <sys/types.h>
#include <fcntl.h>
#include <time.h>
#include <pthread.h>
#include <va/va.h>
#include <va/va_enc_mpeg2.h>
#include "va_display.h"
#define START_CODE_PICUTRE 0x00000100
#define START_CODE_SLICE 0x00000101
#define START_CODE_USER 0x000001B2
#define START_CODE_SEQ 0x000001B3
#define START_CODE_EXT 0x000001B5
#define START_CODE_GOP 0x000001B8
#define CHROMA_FORMAT_RESERVED 0
#define CHROMA_FORMAT_420 1
#define CHROMA_FORMAT_422 2
#define CHROMA_FORMAT_444 3
#define MAX_SLICES 128
enum {
MPEG2_MODE_I = 0,
MPEG2_MODE_IP,
MPEG2_MODE_IPB,
};
enum {
MPEG2_LEVEL_LOW = 0,
MPEG2_LEVEL_MAIN,
MPEG2_LEVEL_HIGH,
};
#define CHECK_VASTATUS(va_status, func) \
if (va_status != VA_STATUS_SUCCESS) { \
fprintf(stderr, "%s:%s (%d) failed, exit\n", __func__, func, __LINE__); \
exit(1); \
}
static VAProfile mpeg2_va_profiles[] = {
VAProfileMPEG2Simple,
VAProfileMPEG2Main
};
static struct _mpeg2_sampling_density
{
int samplers_per_line;
int line_per_frame;
int frame_per_sec;
} mpeg2_upper_samplings[2][3] = {
{ { 0, 0, 0 },
{ 720, 576, 30 },
{ 0, 0, 0 },
},
{ { 352, 288, 30 },
{ 720, 576, 30 },
{ 1920, 1152, 60 },
}
};
struct mpeg2enc_context {
/* args */
int rate_control_mode;
int fps;
int mode; /* 0:I, 1:I/P, 2:I/P/B */
VAProfile profile;
int level;
int width;
int height;
int frame_size;
int num_pictures;
int qp;
FILE *ifp;
FILE *ofp;
unsigned char *frame_data_buffer;
int intra_period;
int ip_period;
int bit_rate; /* in kbps */
VAEncPictureType next_type;
int next_display_order;
int next_bframes;
int new_sequence;
int new_gop_header;
int gop_header_in_display_order;
/* VA resource */
VADisplay va_dpy;
VAEncSequenceParameterBufferMPEG2 seq_param;
VAEncPictureParameterBufferMPEG2 pic_param;
VAEncSliceParameterBufferMPEG2 slice_param[MAX_SLICES];
VAContextID context_id;
VAConfigID config_id;
VABufferID seq_param_buf_id; /* Sequence level parameter */
VABufferID pic_param_buf_id; /* Picture level parameter */
VABufferID slice_param_buf_id[MAX_SLICES]; /* Slice level parameter, multil slices */
VABufferID codedbuf_buf_id; /* Output buffer, compressed data */
VABufferID packed_seq_header_param_buf_id;
VABufferID packed_seq_buf_id;
VABufferID packed_pic_header_param_buf_id;
VABufferID packed_pic_buf_id;
int num_slice_groups;
int codedbuf_i_size;
int codedbuf_pb_size;
/* thread */
pthread_t upload_thread_id;
int upload_thread_value;
int current_input_surface;
int current_upload_surface;
};
/*
* mpeg2enc helpers
*/
#define BITSTREAM_ALLOCATE_STEPPING 4096
struct __bitstream {
unsigned int *buffer;
int bit_offset;
int max_size_in_dword;
};
typedef struct __bitstream bitstream;
static unsigned int
swap32(unsigned int val)
{
unsigned char *pval = (unsigned char *)&val;
return ((pval[0] << 24) |
(pval[1] << 16) |
(pval[2] << 8) |
(pval[3] << 0));
}
static void
bitstream_start(bitstream *bs)
{
bs->max_size_in_dword = BITSTREAM_ALLOCATE_STEPPING;
bs->buffer = calloc(bs->max_size_in_dword * sizeof(int), 1);
bs->bit_offset = 0;
}
static void
bitstream_end(bitstream *bs)
{
int pos = (bs->bit_offset >> 5);
int bit_offset = (bs->bit_offset & 0x1f);
int bit_left = 32 - bit_offset;
if (bit_offset) {
bs->buffer[pos] = swap32((bs->buffer[pos] << bit_left));
}
}
static void
bitstream_put_ui(bitstream *bs, unsigned int val, int size_in_bits)
{
int pos = (bs->bit_offset >> 5);
int bit_offset = (bs->bit_offset & 0x1f);
int bit_left = 32 - bit_offset;
if (!size_in_bits)
return;
if (size_in_bits < 32)
val &= ((1 << size_in_bits) - 1);
bs->bit_offset += size_in_bits;
if (bit_left > size_in_bits) {
bs->buffer[pos] = (bs->buffer[pos] << size_in_bits | val);
} else {
size_in_bits -= bit_left;
bs->buffer[pos] = (bs->buffer[pos] << bit_left) | (val >> size_in_bits);
bs->buffer[pos] = swap32(bs->buffer[pos]);
if (pos + 1 == bs->max_size_in_dword) {
bs->max_size_in_dword += BITSTREAM_ALLOCATE_STEPPING;
bs->buffer = realloc(bs->buffer, bs->max_size_in_dword * sizeof(unsigned int));
}
bs->buffer[pos + 1] = val;
}
}
static void
bitstream_byte_aligning(bitstream *bs, int bit)
{
int bit_offset = (bs->bit_offset & 0x7);
int bit_left = 8 - bit_offset;
int new_val;
if (!bit_offset)
return;
assert(bit == 0 || bit == 1);
if (bit)
new_val = (1 << bit_left) - 1;
else
new_val = 0;
bitstream_put_ui(bs, new_val, bit_left);
}
static struct mpeg2_frame_rate {
int code;
float value;
} frame_rate_tab[] = {
{1, 23.976},
{2, 24.0},
{3, 25.0},
{4, 29.97},
{5, 30},
{6, 50},
{7, 59.94},
{8, 60}
};
static int
find_frame_rate_code(const VAEncSequenceParameterBufferMPEG2 *seq_param)
{
unsigned int delta = -1;
int code = 1, i;
float frame_rate_value = seq_param->frame_rate *
(seq_param->sequence_extension.bits.frame_rate_extension_d + 1) /
(seq_param->sequence_extension.bits.frame_rate_extension_n + 1);
for (i = 0; i < sizeof(frame_rate_tab) / sizeof(frame_rate_tab[0]); i++) {
if (abs(1000 * frame_rate_tab[i].value - 1000 * frame_rate_value) < delta) {
code = frame_rate_tab[i].code;
delta = abs(1000 * frame_rate_tab[i].value - 1000 * frame_rate_value);
}
}
return code;
}
static void
sps_rbsp(struct mpeg2enc_context *ctx,
const VAEncSequenceParameterBufferMPEG2 *seq_param,
bitstream *bs)
{
int frame_rate_code = find_frame_rate_code(seq_param);
if (ctx->new_sequence) {
bitstream_put_ui(bs, START_CODE_SEQ, 32);
bitstream_put_ui(bs, seq_param->picture_width, 12);
bitstream_put_ui(bs, seq_param->picture_height, 12);
bitstream_put_ui(bs, seq_param->aspect_ratio_information, 4);
bitstream_put_ui(bs, frame_rate_code, 4); /* frame_rate_code */
bitstream_put_ui(bs, (seq_param->bits_per_second + 399) / 400, 18); /* the low 18 bits of bit_rate */
bitstream_put_ui(bs, 1, 1); /* marker_bit */
bitstream_put_ui(bs, seq_param->vbv_buffer_size, 10);
bitstream_put_ui(bs, 0, 1); /* constraint_parameter_flag, always 0 for MPEG-2 */
bitstream_put_ui(bs, 0, 1); /* load_intra_quantiser_matrix */
bitstream_put_ui(bs, 0, 1); /* load_non_intra_quantiser_matrix */
bitstream_byte_aligning(bs, 0);
bitstream_put_ui(bs, START_CODE_EXT, 32);
bitstream_put_ui(bs, 1, 4); /* sequence_extension id */
bitstream_put_ui(bs, seq_param->sequence_extension.bits.profile_and_level_indication, 8);
bitstream_put_ui(bs, seq_param->sequence_extension.bits.progressive_sequence, 1);
bitstream_put_ui(bs, seq_param->sequence_extension.bits.chroma_format, 2);
bitstream_put_ui(bs, seq_param->picture_width >> 12, 2);
bitstream_put_ui(bs, seq_param->picture_height >> 12, 2);
bitstream_put_ui(bs, ((seq_param->bits_per_second + 399) / 400) >> 18, 12); /* bit_rate_extension */
bitstream_put_ui(bs, 1, 1); /* marker_bit */
bitstream_put_ui(bs, seq_param->vbv_buffer_size >> 10, 8);
bitstream_put_ui(bs, seq_param->sequence_extension.bits.low_delay, 1);
bitstream_put_ui(bs, seq_param->sequence_extension.bits.frame_rate_extension_n, 2);
bitstream_put_ui(bs, seq_param->sequence_extension.bits.frame_rate_extension_d, 5);
bitstream_byte_aligning(bs, 0);
}
if (ctx->new_gop_header) {
bitstream_put_ui(bs, START_CODE_GOP, 32);
bitstream_put_ui(bs, seq_param->gop_header.bits.time_code, 25);
bitstream_put_ui(bs, seq_param->gop_header.bits.closed_gop, 1);
bitstream_put_ui(bs, seq_param->gop_header.bits.broken_link, 1);
bitstream_byte_aligning(bs, 0);
}
}
static void
pps_rbsp(const VAEncSequenceParameterBufferMPEG2 *seq_param,
const VAEncPictureParameterBufferMPEG2 *pic_param,
bitstream *bs)
{
int chroma_420_type;
if (seq_param->sequence_extension.bits.chroma_format == CHROMA_FORMAT_420)
chroma_420_type = pic_param->picture_coding_extension.bits.progressive_frame;
else
chroma_420_type = 0;
bitstream_put_ui(bs, START_CODE_PICUTRE, 32);
bitstream_put_ui(bs, pic_param->temporal_reference, 10);
bitstream_put_ui(bs,
pic_param->picture_type == VAEncPictureTypeIntra ? 1 :
pic_param->picture_type == VAEncPictureTypePredictive ? 2 : 3,
3);
bitstream_put_ui(bs, 0xFFFF, 16); /* vbv_delay, always 0xFFFF */
if (pic_param->picture_type == VAEncPictureTypePredictive ||
pic_param->picture_type == VAEncPictureTypeBidirectional) {
bitstream_put_ui(bs, 0, 1); /* full_pel_forward_vector, always 0 for MPEG-2 */
bitstream_put_ui(bs, 7, 3); /* forward_f_code, always 7 for MPEG-2 */
}
if (pic_param->picture_type == VAEncPictureTypeBidirectional) {
bitstream_put_ui(bs, 0, 1); /* full_pel_backward_vector, always 0 for MPEG-2 */
bitstream_put_ui(bs, 7, 3); /* backward_f_code, always 7 for MPEG-2 */
}
bitstream_put_ui(bs, 0, 1); /* extra_bit_picture, 0 */
bitstream_byte_aligning(bs, 0);
bitstream_put_ui(bs, START_CODE_EXT, 32);
bitstream_put_ui(bs, 8, 4); /* Picture Coding Extension ID: 8 */
bitstream_put_ui(bs, pic_param->f_code[0][0], 4);
bitstream_put_ui(bs, pic_param->f_code[0][1], 4);
bitstream_put_ui(bs, pic_param->f_code[1][0], 4);
bitstream_put_ui(bs, pic_param->f_code[1][1], 4);
bitstream_put_ui(bs, pic_param->picture_coding_extension.bits.intra_dc_precision, 2);
bitstream_put_ui(bs, pic_param->picture_coding_extension.bits.picture_structure, 2);
bitstream_put_ui(bs, pic_param->picture_coding_extension.bits.top_field_first, 1);
bitstream_put_ui(bs, pic_param->picture_coding_extension.bits.frame_pred_frame_dct, 1);
bitstream_put_ui(bs, pic_param->picture_coding_extension.bits.concealment_motion_vectors, 1);
bitstream_put_ui(bs, pic_param->picture_coding_extension.bits.q_scale_type, 1);
bitstream_put_ui(bs, pic_param->picture_coding_extension.bits.intra_vlc_format, 1);
bitstream_put_ui(bs, pic_param->picture_coding_extension.bits.alternate_scan, 1);
bitstream_put_ui(bs, pic_param->picture_coding_extension.bits.repeat_first_field, 1);
bitstream_put_ui(bs, chroma_420_type, 1);
bitstream_put_ui(bs, pic_param->picture_coding_extension.bits.progressive_frame, 1);
bitstream_put_ui(bs, pic_param->picture_coding_extension.bits.composite_display_flag, 1);
bitstream_byte_aligning(bs, 0);
}
static int
build_packed_pic_buffer(const VAEncSequenceParameterBufferMPEG2 *seq_param,
const VAEncPictureParameterBufferMPEG2 *pic_param,
unsigned char **header_buffer)
{
bitstream bs;
bitstream_start(&bs);
pps_rbsp(seq_param, pic_param, &bs);
bitstream_end(&bs);
*header_buffer = (unsigned char *)bs.buffer;
return bs.bit_offset;
}
static int
build_packed_seq_buffer(struct mpeg2enc_context *ctx,
const VAEncSequenceParameterBufferMPEG2 *seq_param,
unsigned char **header_buffer)
{
bitstream bs;
bitstream_start(&bs);
sps_rbsp(ctx, seq_param, &bs);
bitstream_end(&bs);
*header_buffer = (unsigned char *)bs.buffer;
return bs.bit_offset;
}
/*
* mpeg2enc
*/
#define SID_INPUT_PICTURE_0 0
#define SID_INPUT_PICTURE_1 1
#define SID_REFERENCE_PICTURE_L0 2
#define SID_REFERENCE_PICTURE_L1 3
#define SID_RECON_PICTURE 4
#define SID_NUMBER SID_RECON_PICTURE + 1
static VASurfaceID surface_ids[SID_NUMBER];
/*
* upload thread function
*/
static void *
upload_yuv_to_surface(void *data)
{
struct mpeg2enc_context *ctx = data;
VAImage surface_image;
VAStatus va_status;
void *surface_p = NULL;
unsigned char *y_src, *u_src, *v_src;
unsigned char *y_dst, *u_dst, *v_dst;
int y_size = ctx->width * ctx->height;
int u_size = (ctx->width >> 1) * (ctx->height >> 1);
int row, col;
size_t n_items;
do {
n_items = fread(ctx->frame_data_buffer, ctx->frame_size, 1, ctx->ifp);
} while (n_items != 1);
va_status = vaDeriveImage(ctx->va_dpy, surface_ids[ctx->current_upload_surface], &surface_image);
CHECK_VASTATUS(va_status,"vaDeriveImage");
vaMapBuffer(ctx->va_dpy, surface_image.buf, &surface_p);
assert(VA_STATUS_SUCCESS == va_status);
y_src = ctx->frame_data_buffer;
u_src = ctx->frame_data_buffer + y_size; /* UV offset for NV12 */
v_src = ctx->frame_data_buffer + y_size + u_size;
y_dst = surface_p + surface_image.offsets[0];
u_dst = surface_p + surface_image.offsets[1]; /* UV offset for NV12 */
v_dst = surface_p + surface_image.offsets[2];
/* Y plane */
for (row = 0; row < surface_image.height; row++) {
memcpy(y_dst, y_src, surface_image.width);
y_dst += surface_image.pitches[0];
y_src += ctx->width;
}
if (surface_image.format.fourcc == VA_FOURCC_NV12) { /* UV plane */
for (row = 0; row < surface_image.height / 2; row++) {
for (col = 0; col < surface_image.width / 2; col++) {
u_dst[col * 2] = u_src[col];
u_dst[col * 2 + 1] = v_src[col];
}
u_dst += surface_image.pitches[1];
u_src += (ctx->width / 2);
v_src += (ctx->width / 2);
}
} else {
for (row = 0; row < surface_image.height / 2; row++) {
for (col = 0; col < surface_image.width / 2; col++) {
u_dst[col] = u_src[col];
v_dst[col] = v_src[col];
}
u_dst += surface_image.pitches[1];
v_dst += surface_image.pitches[2];
u_src += (ctx->width / 2);
v_src += (ctx->width / 2);
}
}
vaUnmapBuffer(ctx->va_dpy, surface_image.buf);
vaDestroyImage(ctx->va_dpy, surface_image.image_id);
return NULL;
}
static void
mpeg2enc_exit(struct mpeg2enc_context *ctx, int exit_code)
{
if (ctx->frame_data_buffer) {
free(ctx->frame_data_buffer);
ctx->frame_data_buffer = NULL;
}
if (ctx->ifp) {
fclose(ctx->ifp);
ctx->ifp = NULL;
}
if (ctx->ofp) {
fclose(ctx->ofp);
ctx->ofp = NULL;
}
exit(exit_code);
}
static void
usage(char *program)
{
fprintf(stderr, "Usage: %s --help\n", program);
fprintf(stderr, "\t--help print this message\n");
fprintf(stderr, "Usage: %s <width> <height> <ifile> <ofile> [options]\n", program);
fprintf(stderr, "\t<width> specifies the frame width\n");
fprintf(stderr, "\t<height> specifies the frame height\n");
fprintf(stderr, "\t<ifile> specifies the I420/IYUV YUV file\n");
fprintf(stderr, "\t<ofile> specifies the encoded MPEG-2 file\n");
fprintf(stderr, "where options include:\n");
fprintf(stderr, "\t--cqp <QP> const qp mode with specified <QP>\n");
fprintf(stderr, "\t--fps <FPS> specify the frame rate\n");
fprintf(stderr, "\t--mode <MODE> specify the mode 0 (I), 1 (I/P) and 2 (I/P/B)\n");
fprintf(stderr, "\t--profile <PROFILE> specify the profile 0(Simple), or 1(Main, default)\n");
fprintf(stderr, "\t--level <LEVEL> specify the level 0(Low), 1(Main, default) or 2(High)\n");
}
void
mpeg2_profile_level(struct mpeg2enc_context *ctx,
int profile,
int level)
{
int l = 2, p;
for (p = profile; p < 2; p++) {
for (l = level; l < 3; l++) {
if (ctx->width <= mpeg2_upper_samplings[p][l].samplers_per_line &&
ctx->height <= mpeg2_upper_samplings[p][l].line_per_frame &&
ctx->fps <= mpeg2_upper_samplings[p][l].frame_per_sec) {
goto __find;
break;
}
}
}
if (p == 2) {
fprintf(stderr, "Warning: can't find a proper profile and level for the specified width/height/fps\n");
p = 1;
l = 2;
}
__find:
ctx->profile = mpeg2_va_profiles[p];
ctx->level = l;
}
static void
parse_args(struct mpeg2enc_context *ctx, int argc, char **argv)
{
int c, tmp;
int option_index = 0;
long file_size;
int profile = 1, level = 1;
static struct option long_options[] = {
{"help", no_argument, 0, 'h'},
{"cqp", required_argument, 0, 'c'},
{"fps", required_argument, 0, 'f'},
{"mode", required_argument, 0, 'm'},
{"profile", required_argument, 0, 'p'},
{"level", required_argument, 0, 'l'},
{ NULL, 0, NULL, 0 }
};
if ((argc == 2 && strcmp(argv[1], "--help") == 0) ||
(argc < 5))
goto print_usage;
ctx->width = atoi(argv[1]);
ctx->height = atoi(argv[2]);
if (ctx->width <= 0 || ctx->height <= 0) {
fprintf(stderr, "<width> and <height> must be greater than 0\n");
goto err_exit;
}
ctx->ifp = fopen(argv[3], "rb");
if (ctx->ifp == NULL) {
fprintf(stderr, "Can't open the input file\n");
goto err_exit;
}
fseek(ctx->ifp, 0l, SEEK_END);
file_size = ftell(ctx->ifp);
ctx->frame_size = ctx->width * ctx->height * 3 / 2;
if ((file_size < ctx->frame_size) ||
(file_size % ctx->frame_size)) {
fprintf(stderr, "The input file size %ld isn't a multiple of the frame size %d\n", file_size, ctx->frame_size);
goto err_exit;
}
ctx->num_pictures = file_size / ctx->frame_size;
fseek(ctx->ifp, 0l, SEEK_SET);
ctx->ofp = fopen(argv[4], "wb");
if (ctx->ofp == NULL) {
fprintf(stderr, "Can't create the output file\n");
goto err_exit;
}
opterr = 0;
ctx->fps = 30;
ctx->qp = 8;
ctx->rate_control_mode = VA_RC_CQP;
ctx->mode = MPEG2_MODE_IP;
ctx->profile = VAProfileMPEG2Main;
ctx->level = MPEG2_LEVEL_MAIN;
optind = 5;
while((c = getopt_long(argc, argv,
"",
long_options,
&option_index)) != -1) {
switch(c) {
case 'c':
tmp = atoi(optarg);
/* only support q_scale_type = 0 */
if (tmp > 62 || tmp < 2) {
fprintf(stderr, "Warning: QP must be in [2, 62]\n");
if (tmp > 62)
tmp = 62;
if (tmp < 2)
tmp = 2;
}
ctx->qp = tmp & 0xFE;
ctx->rate_control_mode = VA_RC_CQP;
break;
case 'f':
tmp = atoi(optarg);
if (tmp <= 0)
fprintf(stderr, "Warning: FPS must be greater than 0\n");
else
ctx->fps = tmp;
ctx->rate_control_mode = VA_RC_CBR;
break;
case 'm':
tmp = atoi(optarg);
if (tmp < MPEG2_MODE_I || tmp > MPEG2_MODE_IPB)
fprintf(stderr, "Waning: MODE must be 0, 1, or 2\n");
else
ctx->mode = tmp;
break;
case 'p':
tmp = atoi(optarg);
if (tmp < 0 || tmp > 1)
fprintf(stderr, "Waning: PROFILE must be 0 or 1\n");
else
profile = tmp;
break;
case 'l':
tmp = atoi(optarg);
if (tmp < MPEG2_LEVEL_LOW || tmp > MPEG2_LEVEL_HIGH)
fprintf(stderr, "Waning: LEVEL must be 0, 1, or 2\n");
else
level = tmp;
break;
case '?':
fprintf(stderr, "Error: unkown command options\n");
case 'h':
goto print_usage;
}
}
mpeg2_profile_level(ctx, profile, level);
return;
print_usage:
usage(argv[0]);
err_exit:
mpeg2enc_exit(ctx, 1);
}
/*
* init
*/
void
mpeg2enc_init_sequence_parameter(struct mpeg2enc_context *ctx,
VAEncSequenceParameterBufferMPEG2 *seq_param)
{
int profile = 4, level = 8;
switch (ctx->profile) {
case VAProfileMPEG2Simple:
profile = 5;
break;
case VAProfileMPEG2Main:
profile = 4;
break;
default:
assert(0);
break;
}
switch (ctx->level) {
case MPEG2_LEVEL_LOW:
level = 10;
break;
case MPEG2_LEVEL_MAIN:
level = 8;
break;
case MPEG2_LEVEL_HIGH:
level = 4;
break;
default:
assert(0);
break;
}
seq_param->intra_period = ctx->intra_period;
seq_param->ip_period = ctx->ip_period; /* FIXME: ??? */
seq_param->picture_width = ctx->width;
seq_param->picture_height = ctx->height;
if (ctx->bit_rate > 0)
seq_param->bits_per_second = 1024 * ctx->bit_rate; /* use kbps as input */
else
seq_param->bits_per_second = 0x3FFFF * 400;
seq_param->frame_rate = ctx->fps;
seq_param->aspect_ratio_information = 1;
seq_param->vbv_buffer_size = 3; /* B = 16 * 1024 * vbv_buffer_size */
seq_param->sequence_extension.bits.profile_and_level_indication = profile << 4 | level;
seq_param->sequence_extension.bits.progressive_sequence = 1; /* progressive frame-pictures */
seq_param->sequence_extension.bits.chroma_format = CHROMA_FORMAT_420; /* 4:2:0 */
seq_param->sequence_extension.bits.low_delay = 0; /* FIXME */
seq_param->sequence_extension.bits.frame_rate_extension_n = 0;
seq_param->sequence_extension.bits.frame_rate_extension_d = 0;
seq_param->gop_header.bits.time_code = (1 << 12); /* bit12: marker_bit */
seq_param->gop_header.bits.closed_gop = 0;
seq_param->gop_header.bits.broken_link = 0;
}
static void
mpeg2enc_init_picture_parameter(struct mpeg2enc_context *ctx,
VAEncPictureParameterBufferMPEG2 *pic_param)
{
pic_param->forward_reference_picture = VA_INVALID_ID;
pic_param->backward_reference_picture = VA_INVALID_ID;
pic_param->reconstructed_picture = VA_INVALID_ID;
pic_param->coded_buf = VA_INVALID_ID;
pic_param->picture_type = VAEncPictureTypeIntra;
pic_param->temporal_reference = 0;
pic_param->f_code[0][0] = 0xf;
pic_param->f_code[0][1] = 0xf;
pic_param->f_code[1][0] = 0xf;
pic_param->f_code[1][1] = 0xf;
pic_param->picture_coding_extension.bits.intra_dc_precision = 0; /* 8bits */
pic_param->picture_coding_extension.bits.picture_structure = 3; /* frame picture */
pic_param->picture_coding_extension.bits.top_field_first = 0;
pic_param->picture_coding_extension.bits.frame_pred_frame_dct = 1; /* FIXME */
pic_param->picture_coding_extension.bits.concealment_motion_vectors = 0;
pic_param->picture_coding_extension.bits.q_scale_type = 0;
pic_param->picture_coding_extension.bits.intra_vlc_format = 0;
pic_param->picture_coding_extension.bits.alternate_scan = 0;
pic_param->picture_coding_extension.bits.repeat_first_field = 0;
pic_param->picture_coding_extension.bits.progressive_frame = 1;
pic_param->picture_coding_extension.bits.composite_display_flag = 0;
}
static void
mpeg2enc_alloc_va_resources(struct mpeg2enc_context *ctx)
{
VAEntrypoint *entrypoint_list;
VAConfigAttrib attrib_list[2];
VAStatus va_status;
int max_entrypoints, num_entrypoints, entrypoint;
int major_ver, minor_ver;
ctx->va_dpy = va_open_display();
va_status = vaInitialize(ctx->va_dpy,
&major_ver,
&minor_ver);
CHECK_VASTATUS(va_status, "vaInitialize");
max_entrypoints = vaMaxNumEntrypoints(ctx->va_dpy);
entrypoint_list = malloc(max_entrypoints * sizeof(VAEntrypoint));
vaQueryConfigEntrypoints(ctx->va_dpy,
ctx->profile,
entrypoint_list,
&num_entrypoints);
for (entrypoint = 0; entrypoint < num_entrypoints; entrypoint++) {
if (entrypoint_list[entrypoint] == VAEntrypointEncSlice)
break;
}
free(entrypoint_list);
if (entrypoint == num_entrypoints) {
/* not find Slice entry point */
assert(0);
}
/* find out the format for the render target, and rate control mode */
attrib_list[0].type = VAConfigAttribRTFormat;
attrib_list[1].type = VAConfigAttribRateControl;
vaGetConfigAttributes(ctx->va_dpy,
ctx->profile,
VAEntrypointEncSlice,
&attrib_list[0],
2);
if ((attrib_list[0].value & VA_RT_FORMAT_YUV420) == 0) {
/* not find desired YUV420 RT format */
assert(0);
}
if ((attrib_list[1].value & ctx->rate_control_mode) == 0) {
/* Can't find matched RC mode */
fprintf(stderr, "RC mode %d isn't found, exit\n", ctx->rate_control_mode);
assert(0);
}
attrib_list[0].value = VA_RT_FORMAT_YUV420; /* set to desired RT format */
attrib_list[1].value = ctx->rate_control_mode; /* set to desired RC mode */
va_status = vaCreateConfig(ctx->va_dpy,
ctx->profile,
VAEntrypointEncSlice,
attrib_list,
2,
&ctx->config_id);
CHECK_VASTATUS(va_status, "vaCreateConfig");
/* Create a context for this decode pipe */
va_status = vaCreateContext(ctx->va_dpy,
ctx->config_id,
ctx->width,
ctx->height,
VA_PROGRESSIVE,
0,
0,
&ctx->context_id);
CHECK_VASTATUS(va_status, "vaCreateContext");
va_status = vaCreateSurfaces(ctx->va_dpy,
VA_RT_FORMAT_YUV420,
ctx->width,
ctx->height,
surface_ids,
SID_NUMBER,
NULL,
0);
CHECK_VASTATUS(va_status, "vaCreateSurfaces");
}
static void
mpeg2enc_init(struct mpeg2enc_context *ctx)
{
int i;
ctx->frame_data_buffer = (unsigned char *)malloc(ctx->frame_size);
ctx->seq_param_buf_id = VA_INVALID_ID;
ctx->pic_param_buf_id = VA_INVALID_ID;
ctx->packed_seq_header_param_buf_id = VA_INVALID_ID;
ctx->packed_seq_buf_id = VA_INVALID_ID;
ctx->packed_pic_header_param_buf_id = VA_INVALID_ID;
ctx->packed_pic_buf_id = VA_INVALID_ID;
ctx->codedbuf_buf_id = VA_INVALID_ID;
ctx->codedbuf_i_size = ctx->frame_size;
ctx->codedbuf_pb_size = 0;
ctx->next_display_order = 0;
ctx->next_type = VAEncPictureTypeIntra;
if (ctx->mode == MPEG2_MODE_I) {
ctx->intra_period = 1;
ctx->ip_period = 0;
} else if (ctx->mode == MPEG2_MODE_IP) {
ctx->intra_period = 16;
ctx->ip_period = 0;
} else {
ctx->intra_period = 16;
ctx->ip_period = 2;
}
ctx->next_bframes = ctx->ip_period;
ctx->new_sequence = 1;
ctx->new_gop_header = 1;
ctx->gop_header_in_display_order = 0;
ctx->bit_rate = -1;
for (i = 0; i < MAX_SLICES; i++) {
ctx->slice_param_buf_id[i] = VA_INVALID_ID;
}
mpeg2enc_init_sequence_parameter(ctx, &ctx->seq_param);
mpeg2enc_init_picture_parameter(ctx, &ctx->pic_param);
mpeg2enc_alloc_va_resources(ctx);
/* thread */
ctx->current_input_surface = SID_INPUT_PICTURE_0;
ctx->current_upload_surface = SID_INPUT_PICTURE_1;
ctx->upload_thread_value = pthread_create(&ctx->upload_thread_id,
NULL,
upload_yuv_to_surface,
ctx);
}
static int
mpeg2enc_time_code(VAEncSequenceParameterBufferMPEG2 *seq_param,
int num_frames)
{
int fps = (int)(seq_param->frame_rate + 0.5);
int time_code = 0;
int time_code_pictures, time_code_seconds, time_code_minutes, time_code_hours;
int drop_frame_flag = 0;
assert(fps <= 60);
time_code_seconds = num_frames / fps;
time_code_pictures = num_frames % fps;
time_code |= time_code_pictures;
time_code_minutes = time_code_seconds / 60;
time_code_seconds = time_code_seconds % 60;
time_code |= (time_code_seconds << 6);
time_code_hours = time_code_minutes / 60;
time_code_minutes = time_code_minutes % 60;
time_code |= (1 << 12); /* marker_bit */
time_code |= (time_code_minutes << 13);
time_code_hours = time_code_hours % 24;
time_code |= (time_code_hours << 19);
time_code |= (drop_frame_flag << 24);
return time_code;
}
/*
* run
*/
static void
mpeg2enc_update_sequence_parameter(struct mpeg2enc_context *ctx,
VAEncPictureType picture_type,
int coded_order,
int display_order)
{
VAEncSequenceParameterBufferMPEG2 *seq_param = &ctx->seq_param;
/* update the time_code info for the new GOP */
if (ctx->new_gop_header) {
seq_param->gop_header.bits.time_code = mpeg2enc_time_code(seq_param, display_order);
}
}
static void
mpeg2enc_update_picture_parameter(struct mpeg2enc_context *ctx,
VAEncPictureType picture_type,
int coded_order,
int display_order)
{
VAEncPictureParameterBufferMPEG2 *pic_param = &ctx->pic_param;
pic_param->picture_type = picture_type;
pic_param->temporal_reference = (display_order - ctx->gop_header_in_display_order) & 0x3FF;
pic_param->reconstructed_picture = surface_ids[SID_RECON_PICTURE];
pic_param->forward_reference_picture = surface_ids[SID_REFERENCE_PICTURE_L0];
pic_param->backward_reference_picture = surface_ids[SID_REFERENCE_PICTURE_L1];
if (pic_param->picture_type == VAEncPictureTypeIntra) {
pic_param->f_code[0][0] = 0xf;
pic_param->f_code[0][1] = 0xf;
pic_param->f_code[1][0] = 0xf;
pic_param->f_code[1][1] = 0xf;
pic_param->forward_reference_picture = VA_INVALID_SURFACE;
pic_param->backward_reference_picture = VA_INVALID_SURFACE;
} else if (pic_param->picture_type == VAEncPictureTypePredictive) {
pic_param->f_code[0][0] = 0x1;
pic_param->f_code[0][1] = 0x1;
pic_param->f_code[1][0] = 0xf;
pic_param->f_code[1][1] = 0xf;
pic_param->forward_reference_picture = surface_ids[SID_REFERENCE_PICTURE_L0];
pic_param->backward_reference_picture = VA_INVALID_SURFACE;
} else if (pic_param->picture_type == VAEncPictureTypeBidirectional) {
pic_param->f_code[0][0] = 0x1;
pic_param->f_code[0][1] = 0x1;
pic_param->f_code[1][0] = 0x1;
pic_param->f_code[1][1] = 0x1;
pic_param->forward_reference_picture = surface_ids[SID_REFERENCE_PICTURE_L0];
pic_param->backward_reference_picture = surface_ids[SID_REFERENCE_PICTURE_L1];
} else {
assert(0);
}
}
static void
mpeg2enc_update_picture_parameter_buffer(struct mpeg2enc_context *ctx,
VAEncPictureType picture_type,
int coded_order,
int display_order)
{
VAEncPictureParameterBufferMPEG2 *pic_param = &ctx->pic_param;
VAStatus va_status;
/* update the coded buffer id */
pic_param->coded_buf = ctx->codedbuf_buf_id;
va_status = vaCreateBuffer(ctx->va_dpy,
ctx->context_id,
VAEncPictureParameterBufferType,
sizeof(*pic_param),
1,
pic_param,
&ctx->pic_param_buf_id);
CHECK_VASTATUS(va_status, "vaCreateBuffer");
}
static void
mpeg2enc_update_slice_parameter(struct mpeg2enc_context *ctx, VAEncPictureType picture_type)
{
VAEncSequenceParameterBufferMPEG2 *seq_param;
VAEncPictureParameterBufferMPEG2 *pic_param;
VAEncSliceParameterBufferMPEG2 *slice_param;
VAStatus va_status;
int i, width_in_mbs, height_in_mbs;
pic_param = &ctx->pic_param;
assert(pic_param->picture_coding_extension.bits.q_scale_type == 0);
seq_param = &ctx->seq_param;
width_in_mbs = (seq_param->picture_width + 15) / 16;
height_in_mbs = (seq_param->picture_height + 15) / 16;
ctx->num_slice_groups = 1;
for (i = 0; i < height_in_mbs; i++) {
slice_param = &ctx->slice_param[i];
slice_param->macroblock_address = i * width_in_mbs;
slice_param->num_macroblocks = width_in_mbs;
slice_param->is_intra_slice = (picture_type == VAEncPictureTypeIntra);
slice_param->quantiser_scale_code = ctx->qp / 2;
}
va_status = vaCreateBuffer(ctx->va_dpy,
ctx->context_id,
VAEncSliceParameterBufferType,
sizeof(*slice_param),
height_in_mbs,
ctx->slice_param,
ctx->slice_param_buf_id);
CHECK_VASTATUS(va_status, "vaCreateBuffer");;
}
static int
begin_picture(struct mpeg2enc_context *ctx,
int coded_order,
int display_order,
VAEncPictureType picture_type)
{
VAStatus va_status;
int tmp;
VAEncPackedHeaderParameterBuffer packed_header_param_buffer;
unsigned int length_in_bits;
unsigned char *packed_seq_buffer = NULL, *packed_pic_buffer = NULL;
if (ctx->upload_thread_value != 0) {
fprintf(stderr, "FATAL error!!!\n");
exit(1);
}
pthread_join(ctx->upload_thread_id, NULL);
ctx->upload_thread_value = -1;
tmp = ctx->current_input_surface;
ctx->current_input_surface = ctx->current_upload_surface;
ctx->current_upload_surface = tmp;
mpeg2enc_update_sequence_parameter(ctx, picture_type, coded_order, display_order);
mpeg2enc_update_picture_parameter(ctx, picture_type, coded_order, display_order);
if (ctx->new_sequence || ctx->new_gop_header) {
assert(picture_type == VAEncPictureTypeIntra);
length_in_bits = build_packed_seq_buffer(ctx, &ctx->seq_param, &packed_seq_buffer);
packed_header_param_buffer.type = VAEncPackedHeaderMPEG2_SPS;
packed_header_param_buffer.has_emulation_bytes = 0;
packed_header_param_buffer.bit_length = length_in_bits;
va_status = vaCreateBuffer(ctx->va_dpy,
ctx->context_id,
VAEncPackedHeaderParameterBufferType,
sizeof(packed_header_param_buffer), 1, &packed_header_param_buffer,
&ctx->packed_seq_header_param_buf_id);
CHECK_VASTATUS(va_status,"vaCreateBuffer");
va_status = vaCreateBuffer(ctx->va_dpy,
ctx->context_id,
VAEncPackedHeaderDataBufferType,
(length_in_bits + 7) / 8, 1, packed_seq_buffer,
&ctx->packed_seq_buf_id);
CHECK_VASTATUS(va_status,"vaCreateBuffer");
free(packed_seq_buffer);
}
length_in_bits = build_packed_pic_buffer(&ctx->seq_param, &ctx->pic_param, &packed_pic_buffer);
packed_header_param_buffer.type = VAEncPackedHeaderMPEG2_PPS;
packed_header_param_buffer.has_emulation_bytes = 0;
packed_header_param_buffer.bit_length = length_in_bits;
va_status = vaCreateBuffer(ctx->va_dpy,
ctx->context_id,
VAEncPackedHeaderParameterBufferType,
sizeof(packed_header_param_buffer), 1, &packed_header_param_buffer,
&ctx->packed_pic_header_param_buf_id);
CHECK_VASTATUS(va_status,"vaCreateBuffer");
va_status = vaCreateBuffer(ctx->va_dpy,
ctx->context_id,
VAEncPackedHeaderDataBufferType,
(length_in_bits + 7) / 8, 1, packed_pic_buffer,
&ctx->packed_pic_buf_id);
CHECK_VASTATUS(va_status,"vaCreateBuffer");
free(packed_pic_buffer);
/* sequence parameter set */
VAEncSequenceParameterBufferMPEG2 *seq_param = &ctx->seq_param;
va_status = vaCreateBuffer(ctx->va_dpy,
ctx->context_id,
VAEncSequenceParameterBufferType,
sizeof(*seq_param),
1,
seq_param,
&ctx->seq_param_buf_id);
CHECK_VASTATUS(va_status,"vaCreateBuffer");;
/* slice parameter */
mpeg2enc_update_slice_parameter(ctx, picture_type);
return 0;
}
static int
mpeg2enc_render_picture(struct mpeg2enc_context *ctx)
{
VAStatus va_status;
VABufferID va_buffers[16];
unsigned int num_va_buffers = 0;
va_buffers[num_va_buffers++] = ctx->seq_param_buf_id;
va_buffers[num_va_buffers++] = ctx->pic_param_buf_id;
if (ctx->packed_seq_header_param_buf_id != VA_INVALID_ID)
va_buffers[num_va_buffers++] = ctx->packed_seq_header_param_buf_id;
if (ctx->packed_seq_buf_id != VA_INVALID_ID)
va_buffers[num_va_buffers++] = ctx->packed_seq_buf_id;
if (ctx->packed_pic_header_param_buf_id != VA_INVALID_ID)
va_buffers[num_va_buffers++] = ctx->packed_pic_header_param_buf_id;
if (ctx->packed_pic_buf_id != VA_INVALID_ID)
va_buffers[num_va_buffers++] = ctx->packed_pic_buf_id;
va_status = vaBeginPicture(ctx->va_dpy,
ctx->context_id,
surface_ids[ctx->current_input_surface]);
CHECK_VASTATUS(va_status,"vaBeginPicture");
va_status = vaRenderPicture(ctx->va_dpy,
ctx->context_id,
va_buffers,
num_va_buffers);
CHECK_VASTATUS(va_status,"vaRenderPicture");
va_status = vaRenderPicture(ctx->va_dpy,
ctx->context_id,
&ctx->slice_param_buf_id[0],
ctx->num_slice_groups);
CHECK_VASTATUS(va_status,"vaRenderPicture");
va_status = vaEndPicture(ctx->va_dpy, ctx->context_id);
CHECK_VASTATUS(va_status,"vaEndPicture");
return 0;
}
static int
mpeg2enc_destroy_buffers(struct mpeg2enc_context *ctx, VABufferID *va_buffers, unsigned int num_va_buffers)
{
VAStatus va_status;
unsigned int i;
for (i = 0; i < num_va_buffers; i++) {
if (va_buffers[i] != VA_INVALID_ID) {
va_status = vaDestroyBuffer(ctx->va_dpy, va_buffers[i]);
CHECK_VASTATUS(va_status,"vaDestroyBuffer");
va_buffers[i] = VA_INVALID_ID;
}
}
return 0;
}
static void
end_picture(struct mpeg2enc_context *ctx, VAEncPictureType picture_type, int next_is_bpic)
{
VABufferID tempID;
/* Prepare for next picture */
tempID = surface_ids[SID_RECON_PICTURE];
if (picture_type != VAEncPictureTypeBidirectional) {
if (next_is_bpic) {
surface_ids[SID_RECON_PICTURE] = surface_ids[SID_REFERENCE_PICTURE_L1];
surface_ids[SID_REFERENCE_PICTURE_L1] = tempID;
} else {
surface_ids[SID_RECON_PICTURE] = surface_ids[SID_REFERENCE_PICTURE_L0];
surface_ids[SID_REFERENCE_PICTURE_L0] = tempID;
}
} else {
if (!next_is_bpic) {
surface_ids[SID_RECON_PICTURE] = surface_ids[SID_REFERENCE_PICTURE_L0];
surface_ids[SID_REFERENCE_PICTURE_L0] = surface_ids[SID_REFERENCE_PICTURE_L1];
surface_ids[SID_REFERENCE_PICTURE_L1] = tempID;
}
}
mpeg2enc_destroy_buffers(ctx, &ctx->seq_param_buf_id, 1);
mpeg2enc_destroy_buffers(ctx, &ctx->pic_param_buf_id, 1);
mpeg2enc_destroy_buffers(ctx, &ctx->packed_seq_header_param_buf_id, 1);
mpeg2enc_destroy_buffers(ctx, &ctx->packed_seq_buf_id, 1);
mpeg2enc_destroy_buffers(ctx, &ctx->packed_pic_header_param_buf_id, 1);
mpeg2enc_destroy_buffers(ctx, &ctx->packed_pic_buf_id, 1);
mpeg2enc_destroy_buffers(ctx, &ctx->slice_param_buf_id[0], ctx->num_slice_groups);
mpeg2enc_destroy_buffers(ctx, &ctx->codedbuf_buf_id, 1);
memset(ctx->slice_param, 0, sizeof(ctx->slice_param));
ctx->num_slice_groups = 0;
}
static int
store_coded_buffer(struct mpeg2enc_context *ctx, VAEncPictureType picture_type)
{
VACodedBufferSegment *coded_buffer_segment;
unsigned char *coded_mem;
int slice_data_length;
VAStatus va_status;
VASurfaceStatus surface_status;
size_t w_items;
va_status = vaSyncSurface(ctx->va_dpy, surface_ids[ctx->current_input_surface]);
CHECK_VASTATUS(va_status,"vaSyncSurface");
surface_status = 0;
va_status = vaQuerySurfaceStatus(ctx->va_dpy, surface_ids[ctx->current_input_surface], &surface_status);
CHECK_VASTATUS(va_status,"vaQuerySurfaceStatus");
va_status = vaMapBuffer(ctx->va_dpy, ctx->codedbuf_buf_id, (void **)(&coded_buffer_segment));
CHECK_VASTATUS(va_status,"vaMapBuffer");
coded_mem = coded_buffer_segment->buf;
if (coded_buffer_segment->status & VA_CODED_BUF_STATUS_SLICE_OVERFLOW_MASK) {
if (picture_type == VAEncPictureTypeIntra)
ctx->codedbuf_i_size *= 2;
else
ctx->codedbuf_pb_size *= 2;
vaUnmapBuffer(ctx->va_dpy, ctx->codedbuf_buf_id);
return -1;
}
slice_data_length = coded_buffer_segment->size;
do {
w_items = fwrite(coded_mem, slice_data_length, 1, ctx->ofp);
} while (w_items != 1);
if (picture_type == VAEncPictureTypeIntra) {
if (ctx->codedbuf_i_size > slice_data_length * 3 / 2) {
ctx->codedbuf_i_size = slice_data_length * 3 / 2;
}
if (ctx->codedbuf_pb_size < slice_data_length) {
ctx->codedbuf_pb_size = slice_data_length;
}
} else {
if (ctx->codedbuf_pb_size > slice_data_length * 3 / 2) {
ctx->codedbuf_pb_size = slice_data_length * 3 / 2;
}
}
vaUnmapBuffer(ctx->va_dpy, ctx->codedbuf_buf_id);
return 0;
}
static void
encode_picture(struct mpeg2enc_context *ctx,
int coded_order,
int display_order,
VAEncPictureType picture_type,
int next_is_bpic,
int next_display_order)
{
VAStatus va_status;
int ret = 0, codedbuf_size;
begin_picture(ctx, coded_order, display_order, picture_type);
if (1) {
/* upload YUV data to VA surface for next frame */
if (next_display_order >= ctx->num_pictures)
next_display_order = ctx->num_pictures - 1;
fseek(ctx->ifp, ctx->frame_size * next_display_order, SEEK_SET);
ctx->upload_thread_value = pthread_create(&ctx->upload_thread_id,
NULL,
upload_yuv_to_surface,
ctx);
}
do {
mpeg2enc_destroy_buffers(ctx, &ctx->codedbuf_buf_id, 1);
mpeg2enc_destroy_buffers(ctx, &ctx->pic_param_buf_id, 1);
if (VAEncPictureTypeIntra == picture_type) {
codedbuf_size = ctx->codedbuf_i_size;
} else {
codedbuf_size = ctx->codedbuf_pb_size;
}
/* coded buffer */
va_status = vaCreateBuffer(ctx->va_dpy,
ctx->context_id,
VAEncCodedBufferType,
codedbuf_size, 1, NULL,
&ctx->codedbuf_buf_id);
CHECK_VASTATUS(va_status,"vaCreateBuffer");
/* picture parameter set */
mpeg2enc_update_picture_parameter_buffer(ctx, picture_type, coded_order, display_order);
mpeg2enc_render_picture(ctx);
ret = store_coded_buffer(ctx, picture_type);
} while (ret);
end_picture(ctx, picture_type, next_is_bpic);
}
static void
update_next_frame_info(struct mpeg2enc_context *ctx,
VAEncPictureType curr_type,
int curr_coded_order,
int curr_display_order)
{
if (((curr_coded_order + 1) % ctx->intra_period) == 0) {
ctx->next_type = VAEncPictureTypeIntra;
ctx->next_display_order = curr_coded_order + 1;
return;
}
if (curr_type == VAEncPictureTypeIntra) {
assert(curr_display_order == curr_coded_order);
ctx->next_type = VAEncPictureTypePredictive;
ctx->next_bframes = ctx->ip_period;
ctx->next_display_order = curr_display_order + ctx->next_bframes + 1;
} else if (curr_type == VAEncPictureTypePredictive) {
if (ctx->ip_period == 0) {
assert(curr_display_order == curr_coded_order);
ctx->next_type = VAEncPictureTypePredictive;
ctx->next_display_order = curr_display_order + 1;
} else {
ctx->next_type = VAEncPictureTypeBidirectional;
ctx->next_display_order = curr_display_order - ctx->next_bframes;
ctx->next_bframes--;
}
} else if (curr_type == VAEncPictureTypeBidirectional) {
if (ctx->next_bframes == 0) {
ctx->next_type = VAEncPictureTypePredictive;
ctx->next_bframes = ctx->ip_period;
ctx->next_display_order = curr_display_order + ctx->next_bframes + 2;
} else {
ctx->next_type = VAEncPictureTypeBidirectional;
ctx->next_display_order = curr_display_order + 1;
ctx->next_bframes--;
}
}
if (ctx->next_display_order >= ctx->num_pictures) {
int rtmp = ctx->next_display_order - (ctx->num_pictures - 1);
ctx->next_display_order = ctx->num_pictures - 1;
ctx->next_bframes -= rtmp;
}
}
static void
mpeg2enc_run(struct mpeg2enc_context *ctx)
{
int display_order = 0, coded_order = 0;
VAEncPictureType type;
ctx->new_sequence = 1;
ctx->new_gop_header = 1;
ctx->gop_header_in_display_order = display_order;
while (coded_order < ctx->num_pictures) {
type = ctx->next_type;
display_order = ctx->next_display_order;
/* follow the IPBxxBPBxxB mode */
update_next_frame_info(ctx, type, coded_order, display_order);
encode_picture(ctx,
coded_order,
display_order,
type,
ctx->next_type == VAEncPictureTypeBidirectional,
ctx->next_display_order);
/* update gop_header */
ctx->new_sequence = 0;
ctx->new_gop_header = ctx->next_type == VAEncPictureTypeIntra;
if (ctx->new_gop_header)
ctx->gop_header_in_display_order += ctx->intra_period;
coded_order++;
fprintf(stderr, "\r %d/%d ...", coded_order, ctx->num_pictures);
fflush(stdout);
}
}
/*
* end
*/
static void
mpeg2enc_release_va_resources(struct mpeg2enc_context *ctx)
{
vaDestroySurfaces(ctx->va_dpy, surface_ids, SID_NUMBER);
vaDestroyContext(ctx->va_dpy, ctx->context_id);
vaDestroyConfig(ctx->va_dpy, ctx->config_id);
vaTerminate(ctx->va_dpy);
va_close_display(ctx->va_dpy);
}
static void
mpeg2enc_end(struct mpeg2enc_context *ctx)
{
pthread_join(ctx->upload_thread_id, NULL);
mpeg2enc_release_va_resources(ctx);
}
int
main(int argc, char *argv[])
{
struct mpeg2enc_context ctx;
struct timeval tpstart, tpend;
float timeuse;
gettimeofday(&tpstart, NULL);
memset(&ctx, 0, sizeof(ctx));
parse_args(&ctx, argc, argv);
mpeg2enc_init(&ctx);
mpeg2enc_run(&ctx);
mpeg2enc_end(&ctx);
gettimeofday(&tpend, NULL);
timeuse = 1000000 * (tpend.tv_sec - tpstart.tv_sec) + tpend.tv_usec - tpstart.tv_usec;
timeuse /= 1000000;
fprintf(stderr, "\ndone!\n");
fprintf(stderr, "encode %d frames in %f secondes, FPS is %.1f\n", ctx.num_pictures, timeuse, ctx.num_pictures / timeuse);
mpeg2enc_exit(&ctx, 0);
return 0;
}