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doubango/branches/2.0/doubango/tinyDAV/src/codecs/h264/tdav_codec_h264.c

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/*
* Copyright (C) 2010-2011 Mamadou Diop.
*
* Contact: Mamadou Diop <diopmamadou(at)doubango.org>
*
* This file is part of Open Source Doubango Framework.
*
* DOUBANGO is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* DOUBANGO is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with DOUBANGO.
*
*/
/**@file tdav_codec_h264.c
* @brief H.264 codec plugin using FFmpeg for decoding and x264 for encoding
* RTP payloader/depayloader follows RFC 3984
*
* @author Mamadou Diop <diopmamadou(at)doubango.org>
*
*/
#include "tinydav/codecs/h264/tdav_codec_h264.h"
#if HAVE_FFMPEG && (!defined(HAVE_H264) || HAVE_H264)
#include "tinydav/codecs/h264/tdav_codec_h264_rtp.h"
#include "tinydav/video/tdav_converter_video.h"
#include "tinyrtp/rtp/trtp_rtp_packet.h"
#include "tsk_params.h"
#include "tsk_memory.h"
#include "tsk_debug.h"
static int tdav_codec_h264_init(tdav_codec_h264_t* self, tdav_codec_h264_profile_t profile);
static int tdav_codec_h264_deinit(tdav_codec_h264_t* self);
static void tdav_codec_h264_encap(const tdav_codec_h264_t* h264, const uint8_t* pdata, tsk_size_t size);
/* ============ H.264 Base Profile X.X Plugin interface functions ================= */
#define tdav_codec_h264_fmtp_set tsk_null /* FIXME: should be removed from all plugins (useless) */
static int tdav_codec_h264_open(tmedia_codec_t* self)
{
int ret;
int size;
tdav_codec_h264_t* h264 = (tdav_codec_h264_t*)self;
if(!h264){
TSK_DEBUG_ERROR("Invalid parameter");
return -1;
}
/* the caller (base class) alreasy checked that the codec is not opened */
//
// Encoder
//
h264->encoder.context = avcodec_alloc_context();
avcodec_get_context_defaults(h264->encoder.context);
#if TDAV_UNDER_WINDOWS
h264->encoder.context->dsp_mask = (FF_MM_MMX | FF_MM_MMXEXT | FF_MM_SSE);
#endif
h264->encoder.context->pix_fmt = PIX_FMT_YUV420P;
h264->encoder.context->time_base.num = 1;
h264->encoder.context->time_base.den = TMEDIA_CODEC_VIDEO(h264)->out.fps;
h264->encoder.context->width = TMEDIA_CODEC_VIDEO(h264)->out.width;
h264->encoder.context->height = TMEDIA_CODEC_VIDEO(h264)->out.height;
h264->encoder.context->rc_lookahead = 0;
//h264->encoder.context->refs = 1;
h264->encoder.context->scenechange_threshold = 0;
h264->encoder.context->me_subpel_quality = 0;
h264->encoder.context->partitions = X264_PART_I4X4 | X264_PART_I8X8 | X264_PART_P8X8 | X264_PART_B8X8;
h264->encoder.context->me_method = ME_EPZS;
h264->encoder.context->trellis = 0;
h264->encoder.context->me_range = 16;
h264->encoder.context->max_qdiff = 4;
h264->encoder.context->mb_qmin = h264->encoder.context->qmin = 10;
h264->encoder.context->mb_qmax = h264->encoder.context->qmax = 51;
h264->encoder.context->qcompress = 0.6f;
h264->encoder.context->mb_decision = FF_MB_DECISION_SIMPLE;
h264->encoder.context->flags2 |= CODEC_FLAG2_FASTPSKIP;
h264->encoder.context->flags |= CODEC_FLAG_LOOP_FILTER;
h264->encoder.context->flags |= CODEC_FLAG_GLOBAL_HEADER;
h264->encoder.context->max_b_frames = 0;
h264->encoder.context->b_frame_strategy = 1;
h264->encoder.context->chromaoffset = 0;
switch(TDAV_CODEC_H264_COMMON(h264)->profile){
case tdav_codec_h264_bp10:
default:
h264->encoder.context->profile = FF_PROFILE_H264_BASELINE;
h264->encoder.context->level = 10;
break;
case tdav_codec_h264_bp20:
h264->encoder.context->profile = FF_PROFILE_H264_BASELINE;
h264->encoder.context->level = 20;
break;
case tdav_codec_h264_bp30:
h264->encoder.context->profile = FF_PROFILE_H264_BASELINE;
h264->encoder.context->level = 30;
break;
}
h264->encoder.context->crf = 22;
h264->encoder.context->thread_count = 0;
h264->encoder.context->rtp_payload_size = H264_RTP_PAYLOAD_SIZE;
h264->encoder.context->opaque = tsk_null;
h264->encoder.context->gop_size = TMEDIA_CODEC_VIDEO(h264)->out.fps * 2; // Each 2 second(s)
// Picture (YUV 420)
if(!(h264->encoder.picture = avcodec_alloc_frame())){
TSK_DEBUG_ERROR("Failed to create encoder picture");
return -2;
}
avcodec_get_frame_defaults(h264->encoder.picture);
size = avpicture_get_size(PIX_FMT_YUV420P, h264->encoder.context->width, h264->encoder.context->height);
if(!(h264->encoder.buffer = tsk_calloc(size, sizeof(uint8_t)))){
TSK_DEBUG_ERROR("Failed to allocate encoder buffer");
return -2;
}
// Open encoder
if((ret = avcodec_open(h264->encoder.context, h264->encoder.codec)) < 0){
TSK_DEBUG_ERROR("Failed to open [%s] codec", TMEDIA_CODEC(h264)->plugin->desc);
return ret;
}
//
// Decoder
//
h264->decoder.context = avcodec_alloc_context();
avcodec_get_context_defaults(h264->decoder.context);
h264->decoder.context->pix_fmt = PIX_FMT_YUV420P;
h264->decoder.context->flags2 |= CODEC_FLAG2_FAST;
h264->decoder.context->width = TMEDIA_CODEC_VIDEO(h264)->in.width;
h264->decoder.context->height = TMEDIA_CODEC_VIDEO(h264)->in.height;
#if TDAV_UNDER_WINDOWS
h264->decoder.context->dsp_mask = (FF_MM_MMX | FF_MM_MMXEXT | FF_MM_SSE);
#endif
// Picture (YUV 420)
if(!(h264->decoder.picture = avcodec_alloc_frame())){
TSK_DEBUG_ERROR("Failed to create decoder picture");
return -2;
}
avcodec_get_frame_defaults(h264->decoder.picture);
// Open decoder
if((ret = avcodec_open(h264->decoder.context, h264->decoder.codec)) < 0){
TSK_DEBUG_ERROR("Failed to open [%s] codec", TMEDIA_CODEC(h264)->plugin->desc);
return ret;
}
return 0;
}
static int tdav_codec_h264_close(tmedia_codec_t* self)
{
tdav_codec_h264_t* h264 = (tdav_codec_h264_t*)self;
if(!h264){
TSK_DEBUG_ERROR("Invalid parameter");
return -1;
}
/* the caller (base class) alreasy checked that the codec is opened */
//
// Encoder
//
if(h264->encoder.context){
avcodec_close(h264->encoder.context);
av_free(h264->encoder.context);
}
if(h264->encoder.picture){
av_free(h264->encoder.picture);
}
if(h264->encoder.buffer){
TSK_FREE(h264->encoder.buffer);
}
//
// Decoder
//
if(h264->decoder.context){
avcodec_close(h264->decoder.context);
av_free(h264->decoder.context);
}
if(h264->decoder.picture){
av_free(h264->decoder.picture);
}
TSK_FREE(h264->decoder.accumulator);
h264->decoder.accumulator_pos = 0;
return 0;
}
static tsk_size_t tdav_codec_h264_encode(tmedia_codec_t* self, const void* in_data, tsk_size_t in_size, void** out_data, tsk_size_t* out_max_size)
{
int ret = 0;
int size;
tdav_codec_h264_t* h264 = (tdav_codec_h264_t*)self;
if(!self || !in_data || !in_size || !out_data){
TSK_DEBUG_ERROR("Invalid parameter");
return 0;
}
if(!self->opened){
TSK_DEBUG_ERROR("Codec not opened");
return 0;
}
// wrap yuv420 buffer
size = avpicture_fill((AVPicture *)h264->encoder.picture, (uint8_t*)in_data, PIX_FMT_YUV420P, h264->encoder.context->width, h264->encoder.context->height);
if(size != in_size){
/* guard */
TSK_DEBUG_ERROR("Invalid size");
return 0;
}
// send keyframe for:
// - the first frame
// - every second within the first 4seconds
// - every 5 seconds after the first 4seconds
if(h264->encoder.frame_count++ == 0
||
( (h264->encoder.frame_count < (int)TMEDIA_CODEC_VIDEO(h264)->out.fps * 4) && ((h264->encoder.frame_count % TMEDIA_CODEC_VIDEO(h264)->out.fps)==0) )
||
( (h264->encoder.frame_count % (TMEDIA_CODEC_VIDEO(h264)->out.fps * 5))==0 )
)
{
// You must patch FFmpeg to switch from X264_TYPE_AUTO to X264_TYPE_IDR
h264->encoder.picture->pict_type = FF_I_TYPE;
tdav_codec_h264_encap(h264, h264->encoder.context->extradata, (tsk_size_t)h264->encoder.context->extradata_size);
}
else{
// Encode data
h264->encoder.picture->pts = AV_NOPTS_VALUE;
ret = avcodec_encode_video(h264->encoder.context, h264->encoder.buffer, size, h264->encoder.picture);
if(ret >0){
tdav_codec_h264_encap(h264, h264->encoder.buffer, (tsk_size_t)ret);
}
h264->encoder.picture->pict_type = 0;//reset
}
return 0;
}
static tsk_size_t tdav_codec_h264_decode(tmedia_codec_t* self, const void* in_data, tsk_size_t in_size, void** out_data, tsk_size_t* out_max_size, const tsk_object_t* proto_hdr)
{
tdav_codec_h264_t* h264 = (tdav_codec_h264_t*)self;
const trtp_rtp_header_t* rtp_hdr = proto_hdr;
const uint8_t* pay_ptr = tsk_null;
tsk_size_t pay_size = 0;
int ret;
tsk_bool_t append_scp;
tsk_size_t retsize = 0, size_to_copy = 0;
static tsk_size_t xmax_size = (1920 * 1080 * 3) >> 3;
static tsk_size_t start_code_prefix_size = sizeof(H264_START_CODE_PREFIX);
int got_picture_ptr;
if(!h264 || !in_data || !in_size || !out_data || !h264->decoder.context){
TSK_DEBUG_ERROR("Invalid parameter");
return 0;
}
//TSK_DEBUG_INFO("SeqNo=%hu", rtp_hdr->seq_num);
/* Packet lost? */
if(h264->decoder.last_seq != (rtp_hdr->seq_num - 1) && h264->decoder.last_seq){
if(h264->decoder.last_seq == rtp_hdr->seq_num){
// Could happen on some stupid emulators
TSK_DEBUG_INFO("Packet duplicated, seq_num=%d", rtp_hdr->seq_num);
return 0;
}
TSK_DEBUG_INFO("Packet lost, seq_num=%d", rtp_hdr->seq_num);
}
h264->decoder.last_seq = rtp_hdr->seq_num;
/* 5.3. NAL Unit Octet Usage
+---------------+
|0|1|2|3|4|5|6|7|
+-+-+-+-+-+-+-+-+
|F|NRI| Type |
+---------------+
*/
if(*((uint8_t*)in_data) >> 7){
TSK_DEBUG_WARN("F=1");
/* reset accumulator */
h264->decoder.accumulator = 0;
return 0;
}
/* get payload */
if((ret = tdav_codec_h264_get_pay(in_data, in_size, (const void**)&pay_ptr, &pay_size, &append_scp)) || !pay_ptr || !pay_size){
TSK_DEBUG_ERROR("Depayloader failed to get H.264 content");
return 0;
}
//append_scp = tsk_true;
size_to_copy = pay_size + (append_scp ? start_code_prefix_size : 0);
// start-accumulator
if(!h264->decoder.accumulator){
if(size_to_copy > xmax_size){
TSK_DEBUG_ERROR("%u too big to contain valid encoded data. xmax_size=%u", size_to_copy, xmax_size);
return 0;
}
if(!(h264->decoder.accumulator = tsk_calloc(size_to_copy, sizeof(uint8_t)))){
TSK_DEBUG_ERROR("Failed to allocated new buffer");
return 0;
}
h264->decoder.accumulator_size = size_to_copy;
}
if((h264->decoder.accumulator_pos + size_to_copy) >= xmax_size){
TSK_DEBUG_ERROR("BufferOverflow");
h264->decoder.accumulator_pos = 0;
return 0;
}
if((h264->decoder.accumulator_pos + size_to_copy) > h264->decoder.accumulator_size){
if(!(h264->decoder.accumulator = tsk_realloc(h264->decoder.accumulator, (h264->decoder.accumulator_pos + size_to_copy)))){
TSK_DEBUG_ERROR("Failed to reallocated new buffer");
h264->decoder.accumulator_pos = 0;
h264->decoder.accumulator_size = 0;
return 0;
}
h264->decoder.accumulator_size = (h264->decoder.accumulator_pos + size_to_copy);
}
if(append_scp){
memcpy(&((uint8_t*)h264->decoder.accumulator)[h264->decoder.accumulator_pos], H264_START_CODE_PREFIX, start_code_prefix_size);
h264->decoder.accumulator_pos += start_code_prefix_size;
}
memcpy(&((uint8_t*)h264->decoder.accumulator)[h264->decoder.accumulator_pos], pay_ptr, pay_size);
h264->decoder.accumulator_pos += pay_size;
// end-accumulator
if(rtp_hdr->marker){
AVPacket packet;
/* decode the picture */
av_init_packet(&packet);
packet.size = h264->decoder.accumulator_pos;
packet.data = h264->decoder.accumulator;
ret = avcodec_decode_video2(h264->decoder.context, h264->decoder.picture, &got_picture_ptr, &packet);
if(ret <0){
TSK_DEBUG_ERROR("=============Failed to decode the buffer");
}
else if(got_picture_ptr){
tsk_size_t xsize;
/* fill out */
xsize = avpicture_get_size(h264->decoder.context->pix_fmt, h264->decoder.context->width, h264->decoder.context->height);
if(*out_max_size<xsize){
if((*out_data = tsk_realloc(*out_data, (xsize + FF_INPUT_BUFFER_PADDING_SIZE)))){
*out_max_size = xsize;
}
else{
*out_max_size = 0;
return 0;
}
}
retsize = xsize;
TMEDIA_CODEC_VIDEO(h264)->in.width = h264->decoder.context->width;
TMEDIA_CODEC_VIDEO(h264)->in.height = h264->decoder.context->height;
avpicture_layout((AVPicture *)h264->decoder.picture, h264->decoder.context->pix_fmt, h264->decoder.context->width, h264->decoder.context->height,
*out_data, retsize);
}
h264->decoder.accumulator_pos = 0;
}
return retsize;
}
static tsk_bool_t tdav_codec_h264_fmtp_match(const tmedia_codec_t* codec, const char* fmtp)
{
tdav_codec_h264_t* h264 = (tdav_codec_h264_t*)codec;
tsk_params_L_t* params = tsk_null;
int val_int, sx = -1, sy = -1;
const char* val_str;
tsk_bool_t ret = tsk_true;
tdav_codec_h264_profile_t profile;
if(!h264){
TSK_DEBUG_ERROR("Invalid parameter");
return tsk_false;
}
TSK_DEBUG_INFO("Trying to match [%s]", fmtp);
/* Check whether the profile match (If the profile is missing, then we consider that it's ok) */
if(((profile = tdav_codec_h264_common_get_profile(fmtp)) != tdav_codec_h264_bp99) && (profile != TDAV_CODEC_H264_COMMON(h264)->profile)){
TSK_DEBUG_INFO("Profile not matching");
return tsk_false;
}
/* e.g. profile-level-id=42e00a; packetization-mode=1; max-br=452; max-mbps=11880 */
if((params = tsk_params_fromstring(fmtp, ";", tsk_true))){
/* === max-br ===*/
if((val_int = tsk_params_get_param_value_as_int(params, "max-br")) != -1){
// should compare "max-br"?
TMEDIA_CODEC_VIDEO(h264)->out.max_br = val_int*1000;
}
/* === max-mbps ===*/
if((val_int = tsk_params_get_param_value_as_int(params, "max-mbps")) != -1){
// should compare "max-mbps"?
TMEDIA_CODEC_VIDEO(h264)->out.max_mbps = val_int*1000;
}
/* === packetization-mode ===*/
if((val_int = tsk_params_get_param_value_as_int(params, "packetization-mode")) != -1){
if((packetization_mode_t)val_int == Single_NAL_Unit_Mode || (packetization_mode_t)val_int == Non_Interleaved_Mode){
TDAV_CODEC_H264_COMMON(h264)->pack_mode = (packetization_mode_t)val_int;
}
else{
TSK_DEBUG_INFO("packetization-mode not matching");
ret = tsk_false;
goto bail;
}
}
/* === sx and sy used by doubango clients ===*/
sx = tsk_params_get_param_value_as_int(params, "sx");
sy = tsk_params_get_param_value_as_int(params, "sy");
/* === profile-level-id ===*/
if((val_str = tsk_params_get_param_value(params, "profile-level-id"))){
level_idc_t l_idc;
int std_w, std_h;
/* profile-idc and level-idc already tested by tdav_codec_h264_get_profile() */
tdav_codec_h264_parse_profile(val_str, tsk_null, tsk_null, &l_idc);
switch(l_idc){
case level_idc_1_0:
case level_idc_1_b:
case level_idc_1_1:
std_w = 176, std_h = 144;
break;
default:
std_w = 352, std_h = 288;
break;
}
//set it high to avoid overflow on the accumulator (codec::open)
// will be update with codec::context after first successful decode
TMEDIA_CODEC_VIDEO(h264)->in.width = std_w, TMEDIA_CODEC_VIDEO(h264)->in.height = std_h;
if(sx > 0 && sy > 0){
//while((sx > std_w && sy > std_h) || (sx > std_h && sy > std_w)){
// sx >>= 1;
// sy >>= 1;
//}
TMEDIA_CODEC_VIDEO(h264)->out.width = sx&(~1), TMEDIA_CODEC_VIDEO(h264)->out.height = sy&(~1);
}
else{
TMEDIA_CODEC_VIDEO(h264)->out.width = std_w, TMEDIA_CODEC_VIDEO(h264)->out.height = std_h;
}
}
}
bail:
TSK_OBJECT_SAFE_FREE(params);
return ret;
}
static char* tdav_codec_h264_fmtp_get(const tmedia_codec_t* self)
{
tdav_codec_h264_t* h264 = (tdav_codec_h264_t*)self;
char* fmtp = tsk_null;
if(!h264){
TSK_DEBUG_ERROR("Invalid parameter");
return tsk_null;
}
switch(TDAV_CODEC_H264_COMMON(h264)->profile){
case tdav_codec_h264_bp10:
fmtp = tsk_strdup("profile-level-id=42e00a");
break;
case tdav_codec_h264_bp20:
fmtp = tsk_strdup("profile-level-id=42e014");
break;
case tdav_codec_h264_bp30:
fmtp = tsk_strdup("profile-level-id=42e01e");
break;
}
if(fmtp){
tsk_strcat_2(&fmtp, "; packetization-mode=%d; max-br=%d; max-mbps=%d",
TDAV_CODEC_H264_COMMON(h264)->pack_mode, TMEDIA_CODEC_VIDEO(h264)->in.max_br/1000, TMEDIA_CODEC_VIDEO(h264)->in.max_mbps/1000);
}
return fmtp;
}
/* ============ H.264 Base Profile 1.0 Plugin interface ================= */
/* constructor */
static tsk_object_t* tdav_codec_h264_bp10_ctor(tsk_object_t * self, va_list * app)
{
tdav_codec_h264_t *h264 = self;
if(h264){
/* init base: called by tmedia_codec_create() */
/* init self */
tdav_codec_h264_init(h264, tdav_codec_h264_bp10);
}
return self;
}
/* destructor */
static tsk_object_t* tdav_codec_h264_bp10_dtor(tsk_object_t * self)
{
tdav_codec_h264_t *h264 = self;
if(h264){
/* deinit base */
tdav_codec_h264_common_deinit(self);
/* deinit self */
tdav_codec_h264_deinit(h264);
}
return self;
}
/* object definition */
static const tsk_object_def_t tdav_codec_h264_bp10_def_s =
{
sizeof(tdav_codec_h264_t),
tdav_codec_h264_bp10_ctor,
tdav_codec_h264_bp10_dtor,
tmedia_codec_cmp,
};
/* plugin definition*/
static const tmedia_codec_plugin_def_t tdav_codec_h264_bp10_plugin_def_s =
{
&tdav_codec_h264_bp10_def_s,
tmedia_video,
"H264",
"H264 Base Profile 1.0",
TMEDIA_CODEC_FORMAT_H264_BP10,
tsk_true,
90000, // rate
/* audio */
{ 0 },
/* video */
{176, 144, 15},
tdav_codec_h264_open,
tdav_codec_h264_close,
tdav_codec_h264_encode,
tdav_codec_h264_decode,
tdav_codec_h264_fmtp_match,
tdav_codec_h264_fmtp_get,
tdav_codec_h264_fmtp_set
};
const tmedia_codec_plugin_def_t *tdav_codec_h264_bp10_plugin_def_t = &tdav_codec_h264_bp10_plugin_def_s;
/* ============ H.264 Base Profile 2.0 Plugin interface ================= */
/* constructor */
static tsk_object_t* tdav_codec_h264_bp20_ctor(tsk_object_t * self, va_list * app)
{
tdav_codec_h264_t *h264 = self;
if(h264){
/* init base: called by tmedia_codec_create() */
/* init self */
tdav_codec_h264_init(h264, tdav_codec_h264_bp20);
}
return self;
}
/* destructor */
static tsk_object_t* tdav_codec_h264_bp20_dtor(tsk_object_t * self)
{
tdav_codec_h264_t *h264 = self;
if(h264){
/* deinit base */
tdav_codec_h264_common_deinit(self);
/* deinit self */
tdav_codec_h264_deinit(h264);
}
return self;
}
/* object definition */
static const tsk_object_def_t tdav_codec_h264_bp20_def_s =
{
sizeof(tdav_codec_h264_t),
tdav_codec_h264_bp20_ctor,
tdav_codec_h264_bp20_dtor,
tmedia_codec_cmp,
};
/* plugin definition*/
static const tmedia_codec_plugin_def_t tdav_codec_h264_bp20_plugin_def_s =
{
&tdav_codec_h264_bp20_def_s,
tmedia_video,
"H264",
"H264 Base Profile 2.0",
TMEDIA_CODEC_FORMAT_H264_BP20,
tsk_true,
90000, // rate
/* audio */
{ 0 },
/* video */
{352, 288, 15},
tdav_codec_h264_open,
tdav_codec_h264_close,
tdav_codec_h264_encode,
tdav_codec_h264_decode,
tdav_codec_h264_fmtp_match,
tdav_codec_h264_fmtp_get,
tdav_codec_h264_fmtp_set
};
const tmedia_codec_plugin_def_t *tdav_codec_h264_bp20_plugin_def_t = &tdav_codec_h264_bp20_plugin_def_s;
/* ============ H.264 Base Profile 3.0 Plugin interface ================= */
/* constructor */
static tsk_object_t* tdav_codec_h264_bp30_ctor(tsk_object_t * self, va_list * app)
{
tdav_codec_h264_t *h264 = self;
if(h264){
/* init base: called by tmedia_codec_create() */
/* init self */
tdav_codec_h264_init(h264, tdav_codec_h264_bp30);
}
return self;
}
/* destructor */
static tsk_object_t* tdav_codec_h264_bp30_dtor(tsk_object_t * self)
{
tdav_codec_h264_t *h264 = self;
if(h264){
/* deinit base */
tdav_codec_h264_common_deinit(self);
/* deinit self */
tdav_codec_h264_deinit(h264);
}
return self;
}
/* object definition */
static const tsk_object_def_t tdav_codec_h264_bp30_def_s =
{
sizeof(tdav_codec_h264_t),
tdav_codec_h264_bp30_ctor,
tdav_codec_h264_bp30_dtor,
tmedia_codec_cmp,
};
/* plugin definition*/
static const tmedia_codec_plugin_def_t tdav_codec_h264_bp30_plugin_def_s =
{
&tdav_codec_h264_bp30_def_s,
tmedia_video,
"H264",
"H264 Base Profile 3.0",
TMEDIA_CODEC_FORMAT_H264_BP30,
tsk_true,
90000, // rate
/* audio */
{ 0 },
/* video */
{352, 288, 15},
tdav_codec_h264_open,
tdav_codec_h264_close,
tdav_codec_h264_encode,
tdav_codec_h264_decode,
tdav_codec_h264_fmtp_match,
tdav_codec_h264_fmtp_get,
tdav_codec_h264_fmtp_set
};
const tmedia_codec_plugin_def_t *tdav_codec_h264_bp30_plugin_def_t = &tdav_codec_h264_bp30_plugin_def_s;
/* ============ Common To all H264 codecs ================= */
int tdav_codec_h264_init(tdav_codec_h264_t* self, tdav_codec_h264_profile_t profile)
{
int ret = 0;
if(!self){
TSK_DEBUG_ERROR("Invalid parameter");
return -1;
}
if((ret = tdav_codec_h264_common_init(TDAV_CODEC_H264_COMMON(self)))){
TSK_DEBUG_ERROR("tdav_codec_h264_common_init() faile with error code=%d", ret);
return ret;
}
TDAV_CODEC_H264_COMMON(self)->pack_mode = H264_PACKETIZATION_MODE;
TDAV_CODEC_H264_COMMON(self)->profile = profile;
TMEDIA_CODEC_VIDEO(self)->in.max_mbps = TMEDIA_CODEC_VIDEO(self)->out.max_mbps = H264_MAX_MBPS*1000;
TMEDIA_CODEC_VIDEO(self)->in.max_br = TMEDIA_CODEC_VIDEO(self)->out.max_br = H264_MAX_BR*1000;
// At this time self->plugin is Null
TMEDIA_CODEC_VIDEO(self)->in.width = TMEDIA_CODEC_VIDEO(self)->out.width = 176;
TMEDIA_CODEC_VIDEO(self)->in.height = TMEDIA_CODEC_VIDEO(self)->out.height = 144;
TMEDIA_CODEC_VIDEO(self)->in.fps = TMEDIA_CODEC_VIDEO(self)->out.fps = 15;
if(!(self->encoder.codec = avcodec_find_encoder(CODEC_ID_H264))){
TSK_DEBUG_ERROR("Failed to find H.264 encoder");
ret = -2;
}
if(!(self->decoder.codec = avcodec_find_decoder(CODEC_ID_H264))){
TSK_DEBUG_ERROR("Failed to find H.264 decoder");
ret = -3;
}
/* allocations MUST be done by open() */
return ret;
}
int tdav_codec_h264_deinit(tdav_codec_h264_t* self)
{
if(!self){
TSK_DEBUG_ERROR("Invalid parameter");
return -1;
}
self->encoder.codec = tsk_null;
self->decoder.codec = tsk_null;
// FFMpeg resources are destroyed by close()
return 0;
}
static void tdav_codec_h264_encap(const tdav_codec_h264_t* h264, const uint8_t* pdata, tsk_size_t size)
{
register int32_t i;
int32_t last_scp, prev_scp;
static int32_t size_of_scp = sizeof(H264_START_CODE_PREFIX); /* we know it's equal to 4 ..but */
if(!pdata || !size){
return;
}
last_scp = 0, prev_scp = 0;
for(i = size_of_scp; i<(int32_t)(size - size_of_scp); i++){
if(pdata[i] == H264_START_CODE_PREFIX[0] && pdata[i+1] == H264_START_CODE_PREFIX[1] && pdata[i+2] == H264_START_CODE_PREFIX[2] && pdata[i+3] == H264_START_CODE_PREFIX[3]){ /* Found Start Code Prefix */
prev_scp = last_scp;
if((i - last_scp) >= H264_RTP_PAYLOAD_SIZE || 1){
tdav_codec_h264_rtp_callback(TDAV_CODEC_H264_COMMON(h264), pdata + prev_scp,
(i - prev_scp), (prev_scp == size));
}
last_scp = i;
}
}
if(last_scp < (int32_t)size){
tdav_codec_h264_rtp_callback(TDAV_CODEC_H264_COMMON(h264), pdata + last_scp,
(size - last_scp), tsk_true);
}
}
#endif /* HAVE_FFMPEG */
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