Interface to xvidcore for MPEG-4 compliant encoding.
More...
#include <stdio.h>
#include <string.h>
#include <xvid.h>
#include "libavutil/avassert.h"
#include "libavutil/cpu.h"
#include "libavutil/file.h"
#include "libavutil/internal.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/mathematics.h"
#include "libavutil/mem.h"
#include "libavutil/opt.h"
#include "avcodec.h"
#include "internal.h"
#include "mpegutils.h"
#include "packet_internal.h"
Go to the source code of this file.
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static int | xvid_encode_close (AVCodecContext *avctx) |
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static int | xvid_encode_frame (AVCodecContext *avctx, AVPacket *pkt, const AVFrame *picture, int *got_packet) |
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static int | xvid_ff_2pass_create (xvid_plg_create_t *param, void **handle) |
| Initialize the two-pass plugin and context. More...
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static int | xvid_ff_2pass_destroy (struct xvid_context *ref, xvid_plg_destroy_t *param) |
| Destroy the two-pass plugin context. More...
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static int | xvid_ff_2pass_before (struct xvid_context *ref, xvid_plg_data_t *param) |
| Enable fast encode mode during the first pass. More...
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static int | xvid_ff_2pass_after (struct xvid_context *ref, xvid_plg_data_t *param) |
| Capture statistic data and write it during first pass. More...
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static int | xvid_ff_2pass (void *ref, int cmd, void *p1, void *p2) |
| Dispatch function for our custom plugin. More...
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static int | xvid_strip_vol_header (AVCodecContext *avctx, AVPacket *pkt, unsigned int header_len, unsigned int frame_len) |
| Routine to create a global VO/VOL header for MP4 container. More...
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static void | xvid_correct_framerate (AVCodecContext *avctx) |
| Routine to correct a possibly erroneous framerate being fed to us. More...
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static av_cold int | xvid_encode_init (AVCodecContext *avctx) |
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Interface to xvidcore for MPEG-4 compliant encoding.
- Author
- Adam Thayer (krevn.nosp@m.ik@c.nosp@m.omcas.nosp@m.t.ne.nosp@m.t)
Definition in file libxvid.c.
◆ BUFFER_SIZE
Buffer management macros.
Definition at line 57 of file libxvid.c.
◆ BUFFER_REMAINING
#define BUFFER_REMAINING |
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x | ) |
(BUFFER_SIZE - strlen(x)) |
◆ BUFFER_CAT
#define BUFFER_CAT |
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x | ) |
(&((x)[strlen(x)])) |
◆ OFFSET
◆ VE
◆ xvid_encode_close()
◆ xvid_encode_frame()
◆ xvid_ff_2pass_create()
static int xvid_ff_2pass_create |
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xvid_plg_create_t * |
param, |
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void ** |
handle |
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static |
Initialize the two-pass plugin and context.
- Parameters
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param | Input construction parameter structure |
handle | Private context handle |
- Returns
- Returns XVID_ERR_xxxx on failure, or 0 on success.
Definition at line 120 of file libxvid.c.
Referenced by xvid_ff_2pass().
◆ xvid_ff_2pass_destroy()
static int xvid_ff_2pass_destroy |
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struct xvid_context * |
ref, |
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xvid_plg_destroy_t * |
param |
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) |
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static |
Destroy the two-pass plugin context.
- Parameters
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ref | Context pointer for the plugin |
param | Destroy context |
- Returns
- Returns 0, success guaranteed
Definition at line 151 of file libxvid.c.
Referenced by xvid_ff_2pass().
◆ xvid_ff_2pass_before()
static int xvid_ff_2pass_before |
( |
struct xvid_context * |
ref, |
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xvid_plg_data_t * |
param |
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) |
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static |
Enable fast encode mode during the first pass.
- Parameters
-
- Returns
- Returns 0, success guaranteed
Definition at line 168 of file libxvid.c.
Referenced by xvid_ff_2pass().
◆ xvid_ff_2pass_after()
static int xvid_ff_2pass_after |
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struct xvid_context * |
ref, |
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xvid_plg_data_t * |
param |
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) |
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static |
Capture statistic data and write it during first pass.
- Parameters
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ref | Context pointer for the plugin |
param | Statistic data |
- Returns
- Returns XVID_ERR_xxxx on failure, or 0 on success
Definition at line 212 of file libxvid.c.
Referenced by xvid_ff_2pass().
◆ xvid_ff_2pass()
Dispatch function for our custom plugin.
This handles the dispatch for the Xvid plugin. It passes data on to other functions for actual processing.
- Parameters
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ref | Context pointer for the plugin |
cmd | The task given for us to complete |
p1 | First parameter (varies) |
p2 | Second parameter (varies) |
- Returns
- Returns XVID_ERR_xxxx on failure, or 0 on success
Definition at line 249 of file libxvid.c.
Referenced by xvid_encode_init().
◆ xvid_strip_vol_header()
Routine to create a global VO/VOL header for MP4 container.
What we do here is extract the header from the Xvid bitstream as it is encoded. We also strip the repeated headers from the bitstream when a global header is requested for MPEG-4 ISO compliance.
- Parameters
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avctx | AVCodecContext pointer to context |
frame | Pointer to encoded frame data |
header_len | Length of header to search |
frame_len | Length of encoded frame data |
- Returns
- Returns new length of frame data
Definition at line 281 of file libxvid.c.
Referenced by xvid_encode_frame().
◆ xvid_correct_framerate()
Routine to correct a possibly erroneous framerate being fed to us.
Xvid currently chokes on framerates where the ticks per frame is extremely large. This function works to correct problems in this area by estimating a new framerate and taking the simpler fraction of the two presented.
- Parameters
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avctx | Context that contains the framerate to correct. |
Definition at line 323 of file libxvid.c.
Referenced by xvid_encode_init().
◆ xvid_encode_init()
◆ options
Initial value:= {
{
"mpeg_quant",
"Use MPEG quantizers instead of H.263",
OFFSET(mpeg_quant),
AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1,
VE },
}
Definition at line 908 of file libxvid.c.
◆ xvid_class
Initial value:= {
.class_name = "libxvid",
}
const char * av_default_item_name(void *ptr)
Return the context name.
#define LIBAVUTIL_VERSION_INT
static const AVOption options[]
Definition at line 922 of file libxvid.c.
◆ ff_libxvid_encoder
Initial value:= {
.name = "libxvid",
.wrapper_name = "libxvid",
}
static av_cold int init(AVCodecContext *avctx)
#define FF_CODEC_CAP_INIT_THREADSAFE
The codec does not modify any global variables in the init function, allowing to call the init functi...
#define FF_CODEC_CAP_INIT_CLEANUP
The codec allows calling the close function for deallocation even if the init function returned a fai...
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
static int xvid_encode_close(AVCodecContext *avctx)
static av_cold int xvid_encode_init(AVCodecContext *avctx)
static int xvid_encode_frame(AVCodecContext *avctx, AVPacket *pkt, const AVFrame *picture, int *got_packet)
static const AVClass xvid_class
AVPixelFormat
Pixel format.
@ AV_PIX_FMT_YUV420P
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Structure for the private Xvid context.
Definition at line 929 of file libxvid.c.